Mixed Fluid Uniformization Device and Mixed Fluid Feeding Apparatus

"JOINT DEVICE FOR A FLUID uniform" Technical Field [01] The present invention relates to a device for uniforming mixed fluid and fluid delivery system mixed. More specifically, the invention relates uniforming device mixed fluid and fluid delivery system comprising plural fluid mixed to further enhance the degree of mixing of the mixed fluid and a fluid supply system mixed with this mixed fluid uniforming device.

History technique [02] In the field of iron production, e.g., production of pig iron by the blast furnace process allows the blast furnace gas (hereinafter referred to as "VPB") having a relatively low calorie to be developed as a (low calorie) gas by-product of blast furnace. The BFG is used for many purposes in the works with iron. These low-calorie by-product gases include not only the blast furnace gas, but other gases, such as converter gas (LDG) and coal mine gas (CMG) and the mixture of these gases. Moreover, new iron production processes (for example, direct iron reduction processes, including FINEX and COREX) than the blast furnace process are being developed. For this reason, a combustion method which is applicable even for the effective use of the gas byproducts produced by such processes is expected to be developed.

[03] With any iron production process by-product gas so produced has properties (including gas composition and calorie) which depends on the system used and the operation content. Even with the same system, buoyant properties of gas byproduct from moment to moment in accordance with the properties of raw materials and the reaction process and therefore are not constant. When using the gas byproduct as a fuel for a combustion system such as a gas turbine, for example a calorie reducing gas to be mixed into the by-product gas in order to prevent the floating calorific value of the gas byproduct exceeds the upper limit the variation in the calorific value permitted that is characteristic of the gas turbine, thereby avoiding an excessive increase in combustion temperature in the combustor of the gas turbine. Furthermore a gas increased calorie have to be mixed in the gas byproduct to prevent the value calorific floating gas by-product to fall from the lower limit variation in Calorific Value permitted, thereby preventing the occurrence of flame out of the combustor of the turbine gas. Moreover, the mixed gas resulting from the mixture of a gas primer (BFG, for example) with reduced calorie or lifting gas (referred to herein as "gas side" as appropriate) must be sufficiently uniform over a cross-sectional tubing fuel supply. That is, it is necessary that the primary and secondary gas are sufficiently mixed.

[04] If the mixed gas is not uniform over the cross section of the pipe, it is possible that the uneven portion of the mixed gas, as shown, achieves plural combustors presented in the combustion chamber of the gas turbine, thus causing the combustors plurals gas to burn in a non-uniform combustion condition.

[05] Even in the plural kinds of mixture of combustible gases that are different in properties (for example, the mixture of BFG to LDG or CMG) for using the resulting mixed gas as a fuel, not for reduction purposes or average increase of calorie, sufficient mixing of these gases is required.

[06] Conventionally, for example, a mixer having a stationary blade for stirring the gas in a gas flow path was used to evenly mixing the gases that are different in properties, including calories from each other (see document 1 of the patent, for example). The purpose of this mixer is to achieve a predetermined mixing condition for all variations of flow rates and the total calorie of the respective primary gas and a different kind of gas to be mixed as secondary gas in the primary gas. The mixer is designed to adapt to the mixture of conditions including: 1 flow rate, specific gravity and composition of primary gas; 2 specific gravity, and composition of the secondary gas to be mixed in the primary gas; and (3) varying the mixing ratio between the primary gas and secondary gas.

[07] The mixing ratio between the rimário gas and secondary gas previously determined on the basis of a target value and an increase in calorific calorific values ​​of the respective primary and secondary gases. For this reason, when the secondary gas that was initially planned to be used is replaced with another type of calorie gas lift, or when the mixing ratio between the primary gas and secondary gas must be changed largely due to a change in the value heat the primary gas, it is very difficult for the conventional mixer to ensure uniformity in the mixture is within a predetermined range of mixture deviation on a cross section of the fuel supply pipe located below the mixer.

[08] When the calorie by-product gas having a caloric value of 800 kcal / Nm3 must be increased to 1,000 cal / Nm3 through the use of any coke oven gas (COG), having a calorific value of 4,000 kcal / Nm3 the converter tank of gas (LDG) having a calorific value of 2,000 kcal / Nm3 and natural gas (NG) having a heat steam 9,000 kcal / Nm3, which can be selected as gas increased calories, the mixing ratio the increase of calories to the primary gas gas (ie, gas by-product mentioned above) differ depending on which increased calorie gas is used. For example, the proportions of mixing the respective COG, NG LDG and the primary gas is 0:05: 1, 0.1: 1 and 0.022: 1 respectively. When LDG or NG is used as a surrogate pair COG due to a reduction in the supply of COG as a calorie increase of gas, conventional mixer designed specifically for COG can not sufficiently achieve a uniform mixing effect, that the ratio this mixture was replacement gas is very different from the mixing ratio of the COG. Note that the KDG, having a relatively low calorie as noted above, can be used when the primary gas is a gas having a lower calorie as BFG.

[09] Even when the mixing ratio of the secondary gas to the primary gas is constant, the gas flow pattern in the mixer changes due to the change in the primary gas flow rate. For this reason, even when the secondary gas to be blended is one kind of gas, it is difficult for the conventional mixer to ensure a predetermined uniformity over a wide range of change in the primary gas flow rate.

Document 1 Patent; Open Patent Publication No. HEI Japanese 10-337458 Disclosure of the Invention Problem to be solved by the Invention [010] The present invention was made to solve the following problems. Therefore it is the object of the present invention to provide a fluid uniformization device blended to improve uniformity of mixing the suitability of various mixing conditions, including different rates of flows and compositions of a mixed fluid, thereby improving the uniformity of the fluid mixed disregarding the conventional mixer is displayed or not (i.e., whether the mixer), as well as a fluid supply system having mixed with the mixed fluid uniformization device.

Means for Solving the Problem [011] The present invention provides a device for uniformity of fluid mixed comprising plates pierced plural superposed on one another so displaceable to one another in a flow passage of fluid, wherein: each plate perforated is formed with plural perforations; and relative displacement of plural perforated plates in their respective planes as superposed face to face with each other, a degree of area almost overlaps between the perforations of a perforated plate and the perforations of another perforated plate change to vary a ratio open area of ​​all perforations together.

[012] With this arrangement, a fluid secondary is mixed in a fluid primer to adjust the fluid properties primary at a location upward of the plates pierced causing the flow resistance of the fluid, then the fluid resulting mixed is further mixed after passing the fluid through the perforations. As a result, the mixture is accelerated and thus the uniformity of the mixture is accelerated. Further, it is possible to adjust the proportion of the open area of ​​the perforations mixing conditions to thereby select an optimum ratio of open area for current mixing conditions.

[013] The device of uniformity of the fluid mixed can further comprise a device mobile plate pierced located outside the flow passage to move the plates perforated where: [014] Plates perforated plural include a plate perforated stationary within the flow passage and a movable perforated plate not fixed; and [015] the mobile device of the perforated plate is configured to match the movable perforated plate.

[016] With this arrangement, it is sufficient that only the movable perforated plate is moved. The stationary apertured plate assists in the direction of the movable perforated plate.

[017] Preferably, when the proportion of the open area of ​​the perforations all together is maximum, all together the perforations have an open area that is iqual or greater than the cross-sectional area of ​​the flow passaqem. This feature can reduce the flow resistance at the maximum flow passaqem.

[018] The perforated plates may be inclined relative to a direction perpendicular to a central axis of the flow passaqem. In this case, the perforated plates have a larger effective area, whereas all together the perforations have a larger open area. Thus, the resistance of the flow passage of the flow can be reduced to the maximum.

[019] It is possible that the stationary perforated plate having a guide member movement in opposition to the side engaged portions of the movable perforated plate which are situated in a perpendicular direction to the direction of movement of the movable perforated plate.

[020] It is possible that: a movable perforated plate is interposed between two stationary perforated plates between which is interposed a spacer for maintaining a gap between them to allow the movable perforated plate sliding between two stationary perforated plates; and both stationary apertured plates and the spacer are able to perform a movement function of direction of the movable perforated plate.

[021] This feature allows the plate perforated movable is guided by the plates perforated stationary positioned in front of and behind the plate perforated movable, for example, thus enabling to reduce the thickness and weight of the plate perforated movable, to thereby operate the plate perforated mobile faster.

[022] Each of the holes may have an elongated shape extending in a direction perpendicular to a moving direction of the movable perforated plate. With this feature, the perforations of each perforated plate may have an open area ratio relatively high and thus the open area of ​​the perforations in a fully open condition can be increased.

[023] Preferably, the mixed fluid uniformization device further comprises a cleaning device located within the flow passage to clean the perforations, the cleaning device having plural nozzles for spraying a cleaning liquid. This feature makes it possible to clean the perforated plates without requiring an operator to insert the passage of flow or with a significantly reduced frequency of operator input.

[024] The perforated plates can be configured so that they can close all the holes through the mobile perforated plate movement.

[025] Another uniformization device of the fluid mixed in accordance with the present invention comprises a perforated plate manufactured with many perforations and located dento a passage for fluid flow, the perforated plate being able to rotate in any angular position on a line imagined in a plane of the perforated plate through a center of the perforated plate.

[026] This arrangement can also accelerate the mixing of a mixed fluid. Still, in the event of fluid flow in the passage of the flow is interrupted so urgent in a location down the device to make the fluctuations of pressure excessive to propagate toward the side upward, the spread of these fluctuations in pressure toward the side up can porgue be suppressed perforated rotating plate can increase the flow passage resistance to fluid flow by rotation in this direction to close the flow passage.

[027] The perforated plate can be configured to allow rotation from a fully open position in which the perforated plate plane extends along a central axis of the flow passage, and a fully closed position in which the perforated plate closes the flow passage. The "fully closed position in which the perforated plate closes the flow passage" means a position in which the perforated plate is not formed with any drilling, to block fluid flow in the passage. The "fully closed position" does not mean a position in which the perforated plate actually blocks the fluid flow entirely.

[028] A mixed fluid delivery system according to the present invention comprises: a passage allowing flow of a fluid passing through it; and a mixed fluid uniformization device located in the flow passage, wherein: the mixed fluid uniformization device is either uniform mixed fluid devices described above; and a portion of said flow passage which accommodates the device for uniformity of fluid mixed therein has a cross sectional area other than the flow passage portions are in ascending and descending locations, respectively, of the previous portion.

[029] In this mixed fluid supply system, the perforated plates have a larger effective area, whereas all together the perforations have a larger open area. Thus, the flow passage resistance can be reduced to the maximum.

[030] Another system providing mixed fluid, according to the present invention, comprising: a flow passage permitting a fluid to pass through it; and a mixed fluid uniformization device located in the flow passage, wherein: the mixed fluid uniformization device is either uniform mixed fluid devices described above; and a portion of the flow passage which accommodates the uniformization device therein has a cross sectional area in the descending side and cross-sectional area on the reverse side of the mixed fluid uniformization device; the cross-sectional area of ​​the descending side being larger than the cross-sectional area on the reverse side.

[031] This arrangement is expected to have a more enhanced mixing effect as the mixed fluid expands and diffuses immediately after passage through the uniformization device.

[032] Another system providing mixed fluid, according to the present invention, comprising: a flow passage permitting a fluid to pass through it; and a mixed fluid uniformization device located in the flow passage, wherein: the mixed fluid uniformization device is either uniform mixed fluid devices described above; and a flow passage also has a gas sensing device in a downward location of the fluid uniformization device blended for detecting a property of a gas detection device of the property of a gas being configured to detect a gas component distribution over a cross section of the fluid passage.

[033] With this system of supplying fluid mixed is possible to select a ratio of adequate open area to the perforations of the perforated plates to improve blend uniformity by adjusting the proportion of the open area of ​​the perforations, according to a mixed condition of a mixed gas detected by a detection device of the property of a gas. The detection device of the property of a calorie gas can comprise a detection device, for example.

Advantage of the Invention [034] The present invention provides improved uniformity of the mixture under a wide variety of mixing conditions to improve uniform mixing of a fluid mixture even when a primary fluid and a secondary fluid are mixed are changeable in their respective flow rates and compositions.

Brief Description of the Drawings [035] This will be described based on the following figures, in which: [036] Figure 1 is a diagram pipe illustrating mode schematic a system for supplying fluid mixed, including a device for uniformity of fluid mixed according to an embodiment of the present invention.

[037] Figure 2 is a vertical sectional view schematically showing a configuration of the mixed fluid uniformization device included in the mixed fluid supply system shown in Figure 1.

[038] Figure 3a is a front elevational view showing schematically, another configuration of the mixed fluid uniformization device included in the fluid delivery system shown in Figure 1 mixed.

[039] Figure 3b is a partial sectional side view high in the mixed fluid uniformization device shown in Figure 3A.

[040] Figure 4 is a perspective view showing still another configuration of the mixed fluid uniformization device included in the mixed fluid supply system shown in Figure 1.

[041] Figure 5 is a sectional view taken on the line VV of Figure 4.

[042] Figure 6 is a vertical sectional view showing still another configuration of the mixed fluid uniformization device included in the mixed fluid supply system shown in Figure 1.

[043] Figures 7a, 7b and 7c are each a fragmentary sectional view showing perforated plates of the mixed fluid uniformization device shown in Figure 6.

[044] Figure 8 is a perspective view showing perforated plates of uniform mixed fluid device shown in Figure 6.

[045] Figure 9 is a sectional view taken on line IX-IX of Figure 8.

[046] Figure 10 a vertical sectional view schematically showing still another configuration of the mixed fluid uniformization device included in the fluid delivery system shown in Figure 1 mixed.

[047] Figure 11 is a partially cutaway perspective view of the device of uniformity of the mixed fluid 10 shown in Fig.

[048] Figure 12 is a sectional view taken on the line XII-XII of Figure 10.

[049] Figure 13 is a vertical sectional view schematically showing still another configuration of the mixed fluid uniformization device included in the mixed fluid supply system shown in Figure 1.

[050] Figure 14 is a vertical sectional view schematically showing still another configuration of the mixed fluid uniformization device included in the mixed fluid supply system shown in Figure 1.

[051] Figure 15 is a vertical sectional view schematically showing still another configuration of the mixed fluid uniformization device included in the mixed fluid supply system shown in Figure 1.

[052] Figure 16 is a perspective view showing a configuration of a perforated plate of uniform mixed fluid of the device shown in Figure 15.

[053] Figure 17 is a perspective view showing a configuration of a perforated plate of uniform mixed fluid of the device shown in Figure 15.

Description of Reference Characters 1 .. .sistema fluid supply 2 ... Mixed primary gas pipe 3 ... Pipe secondary gas 4 ... gas pipe mixed 5 .. mixing .ponto 6 ... standardization device (mixed fluid) .. 7. device uniformity degree detector 8 .. Stationary perforated .placa 9 .. mobile perforated .placa .perfuração 10 .. 11 .. 12 .. direction .cilindro connection .vareta 13 .. 14 .. sealing .mecanismo. member guide 15 .. 16 .. .espaçador. standardization device (fluid fixed) 17 ... cleaning device 18 ... pipe supplying cleaning liquid .vaporizador 19 .. 20 .. 21 .. .perfuração. Gas pipe mixed 22 .. rotating perforated .placa 23 .. 24 .. .tubulação rotating perforated .placa 25 .. 26 ... rotary .axis standardization device (mixed fluid) 27 .. 28 .. flange .junta interrupt .plugue 29 .. .válvula of on-off control device 30 ... 31 ... Controller 32 ... Oil position detection device 33 ... groove 34 ... collecting liquid draining hole C .. 5 ... combustion system of gas supply source Best Mode of Carrying out the Invention [ 054] Hereinafter, a device uniformity of the mixed fluid and a fluid supply system mixed with the same according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[055] Figure 1 illustrates a system for supplying fluid mixed 1 as an embodiment of the present invention. The supply system 1 is configured to provide a gas turbine with a fuel comprising a gas by-product having a calorie floating gue is produced by a source gas supply S as a blast furnace or a system direct reduction of iron. Examples of delivery systems include: a fuel gas supply system of the type configured to mix types of by-products gases that are different in property from each other and provide the resulting mixed gas; and a fuel gas supply system of this type configured to mix fuel gas with a calorie reducing gas comprising an inert gas or increased calorie gas comprising COG or the like and provide the resulting mixed gas. The aforesaid gas supply incorporates a mechanism for performing a treatment process, such as a dust filtering process necessary for a gas produced to be supplied as a fuel. The fluids that can be supplied by the fluid supply mixed system of the present invention include liquids, powders, paste and similar gases cement without limitation. In the following configuration, gas is used as a fluid for illustration.

[056] The fluid delivery system includes mixed 1: Primary gas pipe 2 for supplying a primary gas produced by the gas supply source S; Pipe secondary gas 3 connected to the gas pipe 2 primary to mix a reducing or augmenting calorie gas; Mixed gas pipe 4 extending to downward joint 5 between the pipe 2 and the pipe 3 (hereinafter be referred to as "mixing point" as appropriate) to provide a mixed gas comprising the primary gas and the secondary gas; and a device for uniformity of fluid mixed (hereinafter referred to as "device uniformity" just as applicable) 6 located in the gas pipe admixed 4. The gas pipe secondary 3 the gas supply side in order to stabilize the properties fluctuating primary gas (including floating calorie, for example).

[057] In cases where the mixed gas by uniformly uniformization device 6 is a fuel gas C as a combustor of a gas turbine. Each pipe 2, pipe 3 and pipe 4 may comprise a pipe having an elliptical shape and a polygonal cross-section not limited to a circular cross-sectional shape. The tubing secondary gas 3 previously mentioned can be this pipe to feed two or more types of secondary gases at the same mixing point 5 and mix this gas with the primary gas at the same time or this pipe to realize many secondary gas pipe lines that are connected to the primary gas pipe 2 at different points.

[058] The piping mixed gas 4 may be provided with a property detection device of a gas 7 in a downward location of the uniformity device 6 for detecting the degree of uniformity of gas mixed mixture flowing in the gas pipe admixed 4.

[059] Figure 2 shows the uniformity device 6. The device 6 includes two standardization of perforated plates 8 and 9. Each of the perforated plates 8 and 9 is formed with multiple perforations 10. Although there is no limitation with respect to the diameter each drilling point 10 or with the Gual perforations 10 are arranged, the perforations 10 preferably have the same diameter and are arranged with equal height, porgue the proportion of the open area of ​​these perforations 10 can be easily adjusted. A perforated 8 plate has a shape that extends tightly fit into the flow passage of the mixed gas piping 4 (otherwise stated manner, a way to close the flow passage of mixed gas pipe 4 that the card has no drilling) and has a periphery fixed to an inner surface of the pipe forming the mixed gas pipe 4. Thus, the apertured plate 8 will be referred to as "stationary apertured plate 8". The shape of the plate perforated stationary 8 is adapted a way sectioned passage flow pipe gas mixed 4. The other plate pierced 9 is positioned in contact with the face side up plate perforated stationary 8 so that it can rotate in the plane thereof. Thus, the perforated plate 9 will be referred to as "movable perforated plate 9 '.

[060] The movable perforated plate 9 has an end portion connected to a mobile perforated plate comprising a steering cylinder 11 as a hydraulic cylinder located outside the mixed gas pipe 4. The movable perforated plate 9 is matched by cylinder direction 11. a connecting rod 12, the rod 11a interconnecting one steering cylinder 11 and the movable perforated plate 9 extends through the wall of the mixed gas pipe 4. the pipe portion of the wall 4, through which the rod connection 12 extends, is provided with a seal mechanism 13. the movable perforated plate 9 can be positioned on a downward side of the stationary apertured plate 8 without limiting the upward side of the stationary apertured plate 8. 0 mobile perforated plate may comprises an electric motor or the like without limitation to the hydraulic cylinder.

[061] 0 hydraulic cylinder 11 can be located above the gas pipe mixed 4 to lift and lower the plate perforated mobile 9 in a condition suspended without limitation to the location below the gas pipe 4 as shown mixed. Alternatively, the steering cylinder 11 can flanking the mixed gas pipe 4 so as to correspond to the horizontally movable perforated plate 9. The drum 11 may be positioned anywhere between locations above and below the mixed gas pipe 4.

[062] The portion of the gas pipe mixed 4 that accommodates the aforementioned device standardization 6 can be configured to be removable from the gas pipe mixed 4. For example, it is possible that the pipe forming the gas pipe mixed 4 is cut on the front and rear of the device 6 and uniformity of the resulting cut-out portion is connected to the front and rear portions of the mixed gas pipe 4 through the pipe joints and flanges. When the union of rivets to the flange is removed, the pipe section accommodating the standardization of device 6 can be moved externally with the steering cylinder 11 and the like. By doing so, maintaining the uniformity device 6 can be easily conducted during the periodical inspection of the system.

[063] In each of the plates perforated 8 and 9, the perforations 10 are formed so as to have a distance center equal to or greater gue the diameter of each perforation 10. With the holes 10 thus formed, the plates perforated 8:09 may take a desired position (i.e., a ratio of the desired open area) between a full open position in all perforations 10 of the perforated plate coincide with the corresponding perforations of the other perforated plates to provide a ratio of 100% open area and a position fully closed when any one of the perforations 10 of a plate pierced does not overlap at all to drilling corresponding the other plate perforated to provide a ratio of 0% open area, when the plate pierced mobile 9 stops at a desired position as the result of their reciprocal predetermined distance. This feature will be apparent in Figures 7 (a) and 7 (c) showing a uniformity of device 16 provided with three perforated plates to be described later. To the movable perforated plate 9 is movable by a predetermined distance, the movable perforated plate 9 has a smaller outer size than the stationary apertured plate 8.

[064] A maximum open area ratio is not particularly limited to a ratio of 100% open area in the total area of ​​the perforations 10 is open. For example, a maximum opening condition may be a condition in which 100% of the total area of ​​the perforations is not achieved. A minimum open area is not particularly limited to a ratio of 0% open area in the total area of ​​the perforations 10 is closed. For example, a minimum open condition may be a condition that a ratio of open area slightly exceeds 0% of the total area of ​​the perforations (i.e., a condition slightly open). With these settings, the distance from the center of the perforations 10 need not be larger than the diameter of each perforation 10.

[065] 0 purpose of the arrangement described above capable of modifying the ratio of open area of ​​the plates perforated 8 and 9 to allow optimal mixing being performed under conditions for mixing the gas primary and gas side by modifying the ratio open area to suit ace mixing conditions. The perforated plates 8:09 block a portion of the first mixed feed gas to the perforated plates 8:09 through the mixed gas piping 4 to produce flux components perpendicular to the central axis of the pipe. The mixed gas is further mixed through this action. The mixed gas through the perforated plates 8:09 expirais produces diffusion through the jets of the perforations 10 toward the downward side, thus realizing more uniform mixture; through this mechanism, the gas mixture mixed continues also to make a uniform mixture.

[066] 0 detection device degree of uniformity 7 mentioned above, in a downward location of the uniformity device 6 may comprise a calorie detection device configured to detect a distribution calorie gas over a cross-section of passage of the gas flow mixed gas pipe 4. for the EUL uniformity degree detecting means 7 serves to the purpose, the multiple detection sections 7a calorie detection device need simply be arranged substantially on a cross section of the passage. The multiple detection sections 7a can be arranged in many sipes as shown without limitation to a single cross section.

[067] Examples of calorie 7 used herein detection device include the so-called calorimeter to directly measure the calorie gas, a device for measuring the content (density) of a flammable component and other types of devices. In cases where the detection speed is important, it is preferred to use a density detection device inflammable gas (gas component detecting device). In accordance with a main combustible component contained, and a low calorie gas, or the type of flammable components generating a higher density fluctuation (for example, carbon monoxide from the by-products gases produced by the direct reduction process of iron) one density detecting means for detecting the density of this component may be used. The degree of uniformity of the detection device is not limited to these calorie detection devices. Various suitable devices for detection of gas properties can be employed including, for example, a density detection device for detecting a gas distribution over a cross-section of passage of the gas stream.

[068] A proportion of adequate open area to improve uniform mixing can be selected by adjusting the proportion of the open area of ​​the perforations 10 of the perforated plates 8:09 mentioned above according to the mixed gas condition mixed detected by the detection device 7 . the uniformization device 6 is provided with a control device 30 to make this ratio suitable open area, an oil controller 31 to adjust the time of the 11th cylinder rod by controlling the amount of hydraulic oil to be supplied to the cylinder 11:01 direction position detecting device 32 for detecting the expanded position / 11a of the cylinder rod retracted.

[069] The control device 30 has stored a table relating a ratio of mixture of each of the secondary gas (volume ratio of secondary gas to the primary gas) at an optimal ratio corresponding open area of ​​the perforated plates to the types of secondary gas used as parameters. Further, control device 30 has stored positions that can be taken by a detected portion 11a of the cylinder rod as the movable perforated plate 9 moves from the fully open position as a reference position to a fully closed position, as well as the necessary quantities hydraulic oil mobile perforated plate 9 to move between the fully open position and fully closed position.

[070] 0 control device 30 selects the calorie reducing gas to prevent the measured calorific value of the primary gas exceeds the maximum threshold value established for the combustion system, and at the same time, calculates a required mixing amount of calorie reduction gas, based on which the control device 30 gives an instruction of the quantity of mixture to a secondary gas supply system (not shown). Alternatively, control device 30 selects the calorie increasing gas to prevent the measured calorific value of the primary gas falls below the minimum permitted limit value set for the combustion system, and at the same time calculates an amount of mixture needed gas increased calorie, on the basis of which the control device 30 gives an instruction of the quantity of mixture to a system for supplying secondary gas. In cases where many kinds of calorie increase gases and many types of calorie reduction gas is supplied, the control device 30 selects a suitable gas according to a predetermined criteria and calculate a required amount of gas mixture selected.

[071] Subsequently, the control device 30 reads the proportion of open area of ​​the perforated corresponding plates at a mixing ratio of the secondary gas to the primary table gas, calculates a motion of the movable perforated plate 9 on the basis of the read value and controls providing hydraulic oil to the cylinder in order to perform the proportion of open target area of ​​the perforated plates. When the proportion of the secondary gas mixture is relatively low, for example, as an action to lower the proportion of open area, or a similar action is taken. 0 cycle measuring the separation between the calorific value and the target calorific value of the mixed gas is preferably longer gue the calorific value detection time.

[072] In cases where the degree of uniformity of the mixed gas in a downward location of the uniformity device 6 by using the detection device degree of uniformity 7, it is possible to carry out a feedback control by feedback of the detected value. In this case, the system may become unstable due to frequent adjustment the movable perforated plate, a 7 degree of uniformity of the detection device can be used primarily as a means of monitoring the degree of uniformity.

[073] The portion of the gas pipe admixed 4 that accommodates the device for detecting the degree of uniformity 7 can be configured to be removable from the pipe gas mixed 4. This configuration removable can be accomplished through the use of a joint pipe as flanges, such as the removable configuration of the aforementioned uniformity removable device 6. This configuration allows the maintenance and calibration of the uniformity degree detecting device 7 to be easily achieved.

[074] Each of the perforations 10 may be created in the form of an ellipse, a polygon, including square or rectangle, or any form not limited to a circle. The elongated bores 20 as shown in Figure 3 may also be employed. These elongated perforations 20 so as to extend perpendicular to the direction of movement of the movable perforated plate 9 and are separated from one another in the direction of movement. Preferably, the perforations 20 are equally spaced from one another. Although Figure 3a showing the perforations 20 of the movable perforated plate 9 only, it is needless to say gue the movable perforated plate 8 is formed with many perforations that are each equal in size and shape to a corresponding perforations 20. In the condition the area of ​​each perforated plate is invariable, the provision of these elongated perforations 20 is more preferable than the provision of multiple bores 10 circular or square, because the perforated plates have a larger open area when in the fully open position.

[075] If the tubing mixed gas 4 has a constant inner diameter of the tubing along its longitudinal axis, the open area of the perforated plates 8 and 9 smaller than the cross-sectional area of the flow passage defined by tubing 4 mixed gas even when the ratio of the open area of the perforated plates 8 and 9 to 100%. However, the perforated plates 8 and 9 when in the fully open position, preferably has the largest open area to reduce the pressure loss. For this purpose, the portion of the mixed gas pipe 4 which accommodates the uniformization device 6 defines a flow passage having an area larger cross-section than portions extending upward and downward that portion, as shown in Figure 2. That is, the mixed gas pipe 4, according to the present embodiment, has a circular cross section, and therefore the portion of the mixed gas pipe 4 accommodates gue uniformity device 6 has a larger diameter pipe. As a result, the perforated plates 8 and 9, pigeon peas in the fully open position. Conseguentemente the perforated plates 8 and 9, when positioned fully open, have an increased open area may be equal to or greater than the cross-sectional area of the flow passage of each rising side portion and downstream side portion of the gas pipe 4 mixed.

[076] While the enlarged diameter portion of the mixed gas pipe 4 has a diameter at portions located before and behind the uniformization device 6 according to the present embodiment, there is no limitation to this structure. Optionally, the portion of the gas supply pipe admixed 4 which is located immediately behind (descending) of 6 uniformization device may have a diameter larger pipe than the portion of the mixed gas pipe 4 which is located immediately before ( upwards) the uniformization device 6. This structure causes the mixed gas to expand and spread immediately after passage through the uniformization device 6, so that the mixing effect can be improved.

[077] The open area of ​​the plates perforated 8:09 can be further increased by forming the plates perforated 8 and 9 so that the plates perforated 8 and 9 may be positioned as inclined relative to a plane perpendicular to the axis of the central pipe 4 mixed gas, as shown in figure 2. When the perforated plates 8:09 receive the shapes (elliptical) so that the perforated plates 8 and 9 an extended slanted position fit closely in the flow passage of mixed gas pipe 4 , the actual area of ​​each perforated plate can be increased to have a larger number of perforations 10. Assuming that the holes 10 having the same size and shape sounds formed at equal height in each perforated plate and perforated plates 8 and 9 are inclined at an Θ angle relative to the plane perpendicular to the central axis of the mixed gas pipe 4, the actual area of ​​the perforated plates is enlarged 1 / cos Θ times and thus the number of perforations 10 is increased by about 1 / cos Θ times. This goes for all the open area of ​​the perforated plates.

[078] In this case, each of the perforations 10 of the plates perforated 8 and 9 preferably extend through the plate drilled along the axis of central gas pipe admixed 4 (in the direction of fluid flow) as shown in Figure 2, because the flow resistance of the perforated plates 8 and 9 are formed so as to extend the perforated plate in an inclined direction relative to the direction perpendicular to the perforated plate plane, and thus the machining cost increase in the case where a reduction in machining cost is important, the perforations 10 of each perforated plates 8 and 9 may be formed so as to extend the perforated plate in the direction perpendicular to the plane of the perforated plate.

[079] As shown in Figures 4 and 5, the plate perforated Mobile 8 is provided with a guide member 14 for directing the movement of the plate pierced mobile 9. The guide member 14 comprises a pair of members having a section in an L shape that are mounted on the side of the movable perforated plate 8 facing the movable perforated plate 9 at opposite side portions (i.e., at opposite end portions located in directions perpendicular to the direction of movement of the movable perforated plate 9). 0 guide member 14 and the movable perforated plate 8 engage between the opposite side portions of the movable perforated plate 9 in order to guide the sliding of the movable perforated plate 9. In Figure 4, the movable perforated plate 8 and the movable perforated plate 9 are shown with their respective planes positioned vertically, ie, perpendicularly to the central axis of the mixed gas piping 4.

[080] The standardization of the device in figure 4, the steering cylinder 11 is connected to an upper portion of the movable perforated plate 9 in order to move the movable perforated plate 9 in a suspended condition of the steering cylinder 11. The connecting portion between the rod 11a of the steering cylinder 11 and the movable perforated plate 9 is shown in detail in figure 4. the connecting rod 12 fixed to the movable perforated plate 9 and connected to the cylinder rod 11a by a pin connection. The connection mechanism shown is illustrative only and should not be construed so as to exclude any other connection mechanism. The seal mechanism 13 is not shown in Figure 4.

[081] Figures 6 to 9 show a uniformity of device 16 comprising three perforated plates. Specifically, the device uniformization 16 comprises two plates perforated stationary 8 positioned in parallel with one another, separated from one another by spacers 15 between them and a single plate punched mobile 9 between the two plates perforated stationary 8. 0 spacing between the plates perforated stationary 8 is substantially equal to the thickness of the plate pierced mobile 9. As the device standardization 6 above, between the plates triple 8, 9, apertures 10 of a plate perforated have the same size, shape and arrangement of perforations 10 of a another perforated plate. It is possible that the stationary apertured plates 8 are positioned such that the perforations 10 of a stationary apertured plate 8 are facing to their corresponding perforations 10 of another as shown. With this feature, when the uniformization device 16 assumes its full open position as a result of the movement of the movable perforated plate 9, the perforations 10 of the movable perforated plate 9 become completely coincide with the holes 10 of the stationary apertured plate 8 as shown in figure 7a, so that the proportion of the open area of ​​the perforations 10 reaches 100%. By moving the movable perforated plate 9 of the full opening position by a distance equal to the diameter d of each perforation 10, all perforations 10 are fully closed (Figure 7c), so that the open area ratio of 0% range. Figure 7b shows a state where a proportion of the middle open area.

[082] As shown in Figures 8 and 9, the spacers 15 are located between the two plates perforated stationary 8 on the side opposite and separated from each other by a distance substantially equal to the width of the plate pierced mobile 9. With this structure, the spacers 15 and the two stationary perforated plates 8 act as a guide member to direct the movement of the movable perforated plate 9.

[083] Because the two sides of the movable perforated plate 9 is kept stationary between the two perforated plates 8, the thickness of the movable perforated plate 9 can be reduced without risk of warping. As a result, it is possible to reduce the weight of the perforated plate, simplifying the steering mechanism and improve accuracy by setting the proportion of open area.

[084] The arrangement of the perforations is not limited to a grid pattern as described above (see Figures 4 and 8) or an elongated vertical arrangement of many holes (see Figure 3). For example, it is possible to employ an arrangement of perforations located in many concentric imaginary circles and equally spaced. In this case, the stationary apertured plate 8 is simply configured to rotate around the center of imaginary circles. Consequently, the perforations in each imaginary circle are equally spaced from one another, but the spacing between adjacent perforations decreases in an imaginary circle located closer to the axis of rotation.

[085] Figures 10 and 12 show the standardized device 26 provided with a cleaning device 17, in a downward location of the perforated plates 8 and 9 for cleaning the opposed surfaces 10 and perforations of the perforated plates 8 and 9. The cleaning device 17 according to the present embodiment has a pipe cleaning liquid supply comprising many supply pipes that are substantially opposite to the downward side surface of the movable perforated plate 9 and extend substantially horizontally with vertical spacing therebetween. Each of the pipes forming the pipe supplying cleaning liquid 18 is provided with many nozzles 19 sprays spaced from one another. As shown in Figure 11, the many pipe supply pipe supplying cleaning liquid 18 are branched from a single pipe. Each of the branch pipes 18 is connected pipe mixed gas 4 by a flange gasket 27 and has a downward side end with a break plug 28. The pipe supplying cleaning liquid 18 is equipped with a valve on / off 29 in an upward side of this. The valve on / off switch 29 can be configured to be automatically rotated to be opened or closed intermittently during a period during which the supply of the mixed gas is stopped. 0 guide member 14 and the steering cylinder 11 are not shown in Figure 11.

[086] From the point of view of cleaning effect, it is preferable that the sprays nozzles 19 are equal in number to the perforations 10 and positioned in a one by one with perforations 10. However, there is no limitation to this feature. For example, the nozzles 19 simply have to be arranged so that the cleaning liquid can be vaporized so on extensively from each nozzle 19, while the largest possible number of perforations 10 including the perforations uppermost 10 sprayed with the cleaning liquid. The cleaning effect can also be achieved by the cleaner down the perforated plates 8 and 9. Also, the many pipes supply pipe cleaner 18 can be easily made qiratórias around their respective central axes to adjust the direction of each nozzle 19 up and down mode. Pipe mixed QAS 4 may be provided with a visual inspection window allowing the operator to check the cleaning device 17 and the perforated plates 8 and 9, visually. The provision of visual inspection window enables you to adjust the direction of each nozzle 19 by pipe rotation associated pipe supply cleaner 18 in order to optimize the vaporization angle cleaner for cleaning condition so checked when required.

[087] There is no limitation to the number of spray nozzles 19 presented. You can use a single nozzle to the cleaner very extensively. In this case, the supply pipe cleaner 18 comprises a supply pipe. It is possible that a liquid 33 collecting groove is provided in a lower portion of the mixed gas pipe 4 which is located adjacent to the cleaning device 17 for collecting used cleaning liquid while a drainage hole shown at the bottom of the groove collecting a liquid 33 for draining a drainage fluid collected (figure 10).

[088] The location of the cleaning device 17 is not limited to the downward location of the perforated plates 8 and 9, but the cleaning device 17 can be in ascending location of the perforated plates 8:09 or in the upward facing side and descendants of the perforated plates 8:09. in cases where the plates perforated 8:09 are inclined as shown in figure 2 or 6, different from the arrangement shown in which the plates perforated 8:09 are positioned vertically, the cleaning device 17 is preferably located in the upwardly oriented side of the perforated plates 8 and 9 (on the right side of the perforated plates shown in figure 2 or 6). This is because the cleaning effect can be intensified by the sprayed cleaning fluid running down the surface of the perforated plate as compared with the case where the cleaning device 17 is located on the side directed downwardly of the perforated plates 8:09.

[089] The provision of the cleaning device 17 makes it possible to prevent the resistance of the flow passage of flow increases due to dust and the like deposited on perforated plates or the peripheral boundary of each perforation and prevent the formation of so-called sticky effect of the perforated plates . Thus, it is possible to eliminate the need to clean the uniformization device 6 by inserting the pipe by the operator during shutdown of the fluid supply system 1 mixed or reduce the frequency of the cleaning considerably.

[090] As in the previous case, the portion of the mixed gas pipe 4 which accommodates the cleaning device 17 can be configured to be removable from the rest of the mixed gas pipe 4 via pipe connection use as a flange seal . This removable configuration allows the maintenance of 17 cleaning device to be easily achieved.

[091] Figure 13 shows another configuration of the mixed gas piping 21. The mixed gas piping 21 comprises two pipes 21a and 21b extending parallel to each other and a short pipe 21c extending perpendicularly to the interconnected end portions of pipes 21a and 21b thereof. The purpose of this configuration is enough to extend the area of ​​the flow passage defined by the portion 21c of the pipe mixed gas 21 that accommodates the device standardization 6 by a simple structure. Although the two pipes 21a and 21b can be so positioned horizontally parallel with each other, the arrangement shown vertically parallel fashion is preferable because the perforated plates 8:09 are positioned substantially horizontal manner in the pipe 21c extending vertically. With the perforated plates 8 and 9 so positioned, the movable perforated plate 9 is placed on an upper side of the stationary apertured plate 8 and can then move stably. There is no limitation to the illustrated configuration of the gas pipe blended 21 for allowing fluid mixed drain ascending way down the uniformization device 6, but this configuration may be employed so that the pipe 21a extending upward to the uniformization device 6 above pipe 6 uniformity 21b extending downward device to allow the mixed fluid to drain downwardly upon the uniformity device 6.

[092] Unlike the configuration shown where the two pipes 21a and 21b are interconnected by an inclined short pipe 21d extending at an obtuse angle relative to the central axes of the respective pipes 21a and 21b as shown in Figure 14. This configuration allows the loss pressure in the pipeline to be reduced. Further, as the perforated plates 8:09 are positioned oblíguas relative to the central axis of the short inclined pipe 21d, the perforated plates 8:09 have an effective area enlarged relative to the cross-sectional area of ​​the pipe reducing the flow resistance of the perforated plates 8:09.

[093] Each of the standardization device 6:16 has an advantageous function than the uniformity of mixing function of the fuel gas. This function is performed when the device is performing uniformization in a pipe configured to supply a fuel gas to a combustion system such as a gas turbine, for example. To urgently stop this combustion system, a shut-off valve provided in the fuel gas supply pipe is closed to stop the fuel gas supply in an instant. As a result, excessive pressure fluctuations caused by excessive changes at the time fuel gas flow propagated toward the upstream side pipe supplying fuel gas. This propagation of pressure or shifted by a rapid reduction or interruption of the open area ratio of uniformity Devices 6 and 16 and timely manner. As a result, it becomes possible to eliminate a ripple increase tank or air discharge tower or at least reduce the capacity of this tank or tower.

[094] Figures 15 to 17 show, each, a different configuration using a perforated plate to suppress or prevent the propagation of excessive pressure fluctuations downward side to an upstream side of the tubing. This configuration includes a single rotating perforated plate 22 gue is rotatable around an imaginary line extending through the center thereof. As the pipe 23 shown in Figure 15 comprises a pipe having a circular cross section, the rotating perforated plate is circular outside as shown in Figure 16. Needless to say, the shape of the rotating perforated plate is not limited to the circular shape, but odes be selected from various forms to fit the shape of a pipe cross-sectional used. For example, a rotating perforated plate 24 having a square shape as shown in Figure 17 can be used for a pipe having a cross-sectional form. The rotating perforated plate need not necessarily have the same shape as a cross section perpendicular to the central axis of the pipe. It is possible to employ the same cross-sectional shape of a line in a tilted forward or backward from a plane perpendicular to the central axis of the pipe. As in the case of standardization of Devices 6 and 16 each of the perforations 10 can be of elliptical, polygonal, which means include a square shape and a rectangular shape or a similar shape not limited to a circular shape.

[095] The rotating perforated plate 22 or 24 thus formed has a rotating shaft 25 extending through the center of the rotating perforated plate 22 or 24 and laterally projected through the pipe. The rotary shaft 25 is connected to a rotating driver not shown located outside the pipe 23. Examples of rotation conductors include an electric motor, a hydraulic cylinder and the like. As the rotational driver rotates the rotation shaft 25, the rotating perforated plate 22 or 24 between a position in Gual the rotating perforated plate 22 or 24 guase fits into the pipe flow passage (i.e., a fully closed position in which plate perforated turntable 22 or 24 is formed with no perforation shut completely the flow passage of the pipe as described by line solid in figure 15) and a position in which the plane of plate perforated turntable 22 or 24 extends over the central pipe axis (namely, a fully opened position depicted by the double-dashed line in figure 15). The rotating perforated plate 22 or 24 may be configured so that it can stop at a fully open position, fully closed position and any angular position between these two positions.

[096] While the configurations shown in Figures 15 to 17 each have a rotating perforated plate 22 or 24 configured to rotate around a horizontal axis, there is no limitation to this configuration. For example, the rotating perforated plate can be configured to rotate around a vertical axis or any desired axis of rotation between the horizontal axis and the vertical axis. A position detecting device for detecting a rotated stop position in which the rotating perforated plate 22 or stop 24 may be made to verify that the rotating perforated plate 22 or 24 rests in a suitable position.

[097] During normal operation of the combustion system mentioned above, the rotating perforated plate 22 or 24 assumes the fully open position so that high resistance to fuel gas flow does not function. However, when excessive pressure fluctuations are propagated into the ascending side in response to closure of the emergency shut-off valve located downward to the pipe 23 as described above, the rotating perforated plate 22 or 24 rotates rapidly to assume the fully closed position . Thus, the passage of fluid flow is ultimately restricted only to the perforations 10 and rotating perforated plate 22 or 24, with the result that the flow resistance in the pipe 23 increases rapidly to dampen the pressure fluctuations, thus suppressing the spread of the fluctuations pressure.

[098] In addition to the rotary motion of the perforated plates 22:24 described above, each of the rotating perforated plates 22:24 can be used as a uniform mixed fluid device.

[099] While each of the configurations uses a gas turbine as an example of the combustion system, the present invention is not particularly limited to the use of a gas turbine. For example, the combustion system may be a boiler or heat an internal combustion engine such as a diesel engine or a gas engine. In summary, the uniformization device according to the present invention can be applied to any fuel system that is capable of maintaining combustion while the calorie is carried within a fixed range calorie fluctuation. Industrial Applicability [0100] 0 device uniform mixed fluid according to the present invention is capable of improving a uniformity of a fluid mixture being provided mixed mode without regard to the fact that conventional mixing is shown. While an AK is used as an example of a fluid to be subjected to uniformization device, there is no limitation to gases. The uniformization device is also applicable to a liquid supply system. Alternatively, the uniformization device can be applied to a supply system for the supply of powder, paste or similar cement.

CLAIMS