Valve
Abstract
A valve comprising a valve body (1) and provided with a flow passage (3) into which a closure member (2) without a flow passage is rotatably fitted on a pivot shaft (8) and when necessary, sealing members (6) are positioned between the closure member (2) and the valve body (1). On one side or on both sides of the closure member (2) is fitted one or more punched attenuator plates (9) having a plurality of apertures (12), the plates (9) being spaced apart and parallel to each other and to the sealing surface of the closure member (2).

Term
No projected expiry on record.
- Priority
- Filed
- Granted
- Today
3 claims: 2 independent, 1 dependent
- 1PŘEDMĚT 1. Ventil, v jehož tělese je vytvořen průtokový kanál, v němž je otočně nebo rotačně uložen závěrný díl prostý průtokového kanálu, například kotouč nebo kulový vrchlík, přičemž mezi závěrným dílem a tělesem ventilu je případně uloženo těsnění, vyznačený tím, že na jedné nebo obou stranách závěrného dílu (2, 2‘j je uložena jedna nebo několik škrticích destiček (9, 9‘j, které jsou uloženy vedle sebe s mezerami a s mezerou od závěrného dílu (2) a z nichž 115 destičky 9 rovnoběžné se závěrným dílem 2, leží od něj v určité vzdálenosti a mají mezi sebou mezery. Škrticími destičkami 9 a závěrným dílem 2 procházejí upínací šrouby 10 nebo jakékoli jiné ústrojí, které zajišťuje vzájemnou polohu škrticích destiček 9 a závěrného dílu 2. Mezery mezi škrticími destičkami 9 a mezi škrticími destičkami 9 a závěrným dílem 2 jsou zajištěny pouzdry 11 nebo jakýmikoli jinými prostředky. Je pochopitelné, že škrticí destičky nemusejí být rovnoběžné ani vzájemně ani se závěrným dílem 2, nýbrž že mohou být upevněny v jakékoli šikmé poloze a mohou svírat mezi sebou a se závěrným dílem 2 jakýkoli daný úhel. Mimo to nemusejí být škrticí destičky 9 rovinné. Každá škrticí destička 9 může například sestávat z děrované desky, tvořené tyčkami nebo dráty a tvořícími síť. V každé škrticí destičce 9 jsou díry 12, které procházejí celou její tloušťkou a jsou rozloženy po celé ploše škrticí destičky 9. Je-li ve ventilu umístěno 4 v průtokovém kanále 3 několik rovnoběžných škrticích destiček 9, je účelné, aby díry 12 dvou sousedních škrticích destiček 9 neležely proti sobě. Velice výhodné je uspořádání, kde poloměr děr 12 se postupně zvětšuje od jedné škrticí destičky 9 ke druhé, počínaje od závěrného dílu 2. Když se ventil podle obr. 1 a 2 otvírá, je na začátku škrticí účinek škrticích destiček 9 největší;čím víc se ventil otvírá, tím se však škrticí účinek škrticích destiček zmenšuje, protože se zvětšuje poměr průtočného množství média, které protéká kolem škrticích destiček 9, k celkovému průtočnému množství. Když je ventil úplně otevřen, nepůsobí škrticí destičky 9 škrticím účinkem, nýbrž jsou rovnoběžné se směrem proudění a ventil pracuje s prakticky úplným průtočným množstvím. Obr. 3 a 4 ukazují alternativní provedení ventilu podle vynálezu, kde závěrný díl 2‘ je tvořen kulovým vrchlíkem a škrticí destičky 9‘ jsou umístěny pouze na jeho jedné straně. Na obr. 3 a 4 je pro stejné součásti použito stejných vztahových značek jako na obr. 1 a 2, avšak s čárkou. každá je opatřena množinou děr [12, 12‘J.
- 2Ventil podle bodu 1, vyznačený tím, že všechny škrticí destičky (9, 9‘j jsou uloženy vzhledem ke hřídeli (8, 8‘] závěrného dílu (2, 2‘j na vnitřní ploše myšlené rotační plochy opsané závěrnému dílu [2, 2‘j.
- 3Ventil podle bodů 1 * a 2, vyznačený tím, že škrticí destička nebo škrticí destičky [9, 9‘) jsou rovnoběžné s těsnicí plochou závěrného dílu [2, 2‘j.
Independent claims3
11 paragraphs, as filed
(54) Valve
The invention relates to a valve having a body having a flow passage in which a closing part without a flow passage, for example a disc or a spherical cap, is rotatably or pivotably mounted, and optionally a seal is provided between the closing part and the valve body.
Valves with swivel or rotary shut-off valve are used to control the flow by adjusting the flow cross-section of the pipeline by adjusting the shut-off valve. However, they are not suitable for fine control of the flow rate, since the flow cross section and flow velocity change discontinuously when the lock part is rotated, and oscillation stresses and shocks occur in the piping downstream of the valve. To overcome this drawback, a valve has been proposed whose pivoting shutter member is provided with channels or bores that are parallel to each other and to the shutter surface of the shutter member. In the open position of the shutter, fluid flows through these channels or bores so that the open valve has a relatively high internal resistance. Since the flow rate depends on the internal resistance of the valve, the valve must be considerably larger than a conventional throttle valve for the same flow rate. The team. the weight of the valve and its costly price increase, especially when the medium is corrosive and the valve has to be made of expensive, durable material.
The valve according to the invention removes these disadvantages. SUMMARY OF THE INVENTION One or more throttle plates are provided on one or both sides of the closure member, which are arranged side by side with gaps and with a gap from the closure member, each having a plurality of holes.
The valve according to the invention has very good control properties, since the pressure drop necessary for flow rate control is achieved not only by changing the size of the flow cross section, but also. direction of flow. This creates a vortex causing a pressure drop behind the valve at the shut-off member, so that to create the necessary pressure difference, it is not necessary to increase the flow rate and then slow down again and the valve does not cause noise. On full opening, on the other hand, the medium flows in one direction parallel to the stopper and the throttle plates without creating a turbulent flow.
BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in conjunction with the exemplary embodiments shown in the drawing, wherein FIG.
9 Fig. 2 shows the valve of Fig. 1 in the shut-off position of the shut-off element which closes the flow passage; Fig. 3 shows a second embodiment of the valve with a shut-off-shaped shut-off element in sectional view; 4 shows the valve of FIG. 3, wherein the closure member is pivoted to the closed position.
The throttle valve of FIG. 1 and 2 has a body
1 in which a flow channel 3 of circular cross-section is formed. In the housing 1, a disc-shaped closing member 2 is pivotably mounted on a shaft 8. The shaft 8 is rotatably mounted in the middle of the flow channel 3 and fixed in the housing 1 on both sides in bearings (not shown). The disc-shaped closing member 2 is attached to the sides of the shaft 8 as shown in Figures 1 and 2. The inner wall of the flow duct 3, considering the inlet side of the valve body 1, is provided with a circular widened portion 4 that extends near the plane of the shaft 8. In the bottom of the widened portion 4 a seal 6 is disposed. The second edge of the groove 7 is formed by a support ring 5, which is partially inserted into the enlarged part 4 of the flow channel 3, as can be seen from FIGS. 1 and 2. giant. 1 and 2 may, for example, be analogous to the construction of the valve described in Finnish Patent No. 45,536.
In the embodiment according to FIGS. 1 and 2, a throttle plate 9 is fastened on the inlet side of the closure member 2, i.e., the side facing the flowing medium, and three perforated plates 9 are fastened on the outlet side. and that they can be placed in the necessary relative position either on either side of the shutter 2 or, conversely, all the throttle plates can be on one side of the shutter 2.
All throttle plates 9 are positioned relative to the shaft 6 of the closure piece 2 so that their edges lie on the inner surface of the imaginary spherical surface described by the closure piece 2. In the embodiment of Figures 1 and 2, the throttle plates are
2 sheets
Sheet 1 Sheet 2
51 members in 16 offices
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 802109 | Finland | A | |
| 80802109 | – | – | – |
| FI19800002109 | – | – | – |
Members51
| Document | Office | Kind | |
|---|---|---|---|
| FI790084A | Finland | A | |
| FI790084A7 | Finland | A7 | |
| NO794258L | Norway | L | |
| JPS5594065A | Japan | A | |
| EP0013601A1 | European Patent Office (EPO) | A1 | |
| BR7908389A | Brazil | A | |
| ES487531A0 | Spain | A0 | |
| ES8105079A1 | Spain | A1 | |
| DD148530A5 | German Democratic Republic (until 1990) | A5 | |
| FI802109A | Finland | A | |
| FI802109A7 | Finland | A7 | |
| NO812236L | Norway | L | |
| EP0043193A1 | European Patent Office (EPO) | A1 | |
| AU7101981A | Australia | A | |
| BR8103396A | Brazil | A | |
| JPS5743062A | Japan | A | |
| ES503184A0 | Spain | A0 | |
| ES8204116A1 | Spain | A1 | |
| CA1128489A | Canada | A | |
| EP0013601B1 | European Patent Office (EPO) | B1 | |
| AT2353T | Austria | T | |
| ATE2353T1 | Austria | T1 | |
| DE3061697D1 | Germany | D1 | |
| DD160073A5 | German Democratic Republic (until 1990) | A5 | |
| CS221959B2 | Czechoslovakia (until 1993) | B2 | |
| KR830006605A | Republic of Korea | A | |
| CA1155821A | Canada | A | |
| SU1066467A3 | Soviet Union (until 1991) | A3 | |
| FI65656B | Finland | B | |
| SU1077581A3 | Soviet Union (until 1991) | A3 | |
| MX150318A | Mexico | A | |
| FI65656C | Finland | C | |
| CS229915B2This record | Czechoslovakia (until 1993) | B2 | |
| KR840001897Y1 | Republic of Korea | Y1 | |
| US4479510A | United States of America | A | |
| JPS608379B2 | Japan | B2 | |
| AU543053B2 | Australia | B2 | |
| EP0043193B1 | European Patent Office (EPO) | B1 | |
| AT12678T | Austria | T | |
| ATE12678T1 | Austria | T1 | |
| DE3169804D1 | Germany | D1 | |
| NO152624B | Norway | B | |
| US4530375A | United States of America | A | |
| MX152686A | Mexico | A | |
| NO152624C | Norway | C | |
| FI70744B | Finland | B | |
| US4610273A | United States of America | A | |
| FI70744C | Finland | C | |
| NO155308B | Norway | B | |
| NO155308C | Norway | C | |
| JPS6244147B2 | Japan | B2 |
Numbers
- Publication, DOCDB
- 229915
- Publication, EPODOC
- CS229915
- Application
- 814552
- Application, DOCDB
- 455281
- Application, EPODOC
- CS19810004552
Titles
- English
- VALVE
Classification
- CPC, 1
- F16K47/045
- IPC, 3
- F16K1 22
- F16K47 02
- F16K47 04