Turbine rotor blade and axial rotor blade section for a gas turbine

COMPLETE SPECIFICATION (See Section 10)

MICRO CURRENT INTERRUPTER AND INSULATING PLATE THEREOF”

SIEMENS AKTIENGESELLSCHAFT A German company of WITTELSBACHERPLATZ 2, D-80333 MUNICH, GERMANY

The following specification particularly describes the invention and the manner in which it is to be performed.

Description:

Micro current interrupter and insulation plate thereof

Technical Field:

The present invention relates to the field of electrical low-voltage devices, in particular a micro current interrupter and the insulation plate thereof.

Prior Art:

At the present time, some micro current interrupters exhibit the problems listed below:

a. Flexible line and front part of the bimetallic component have a flashover during interruption experiments.

b. Heat-governed warping of the bimetallic plate gives rise to sticking to the bimetallic mount with a short circuit, which leads to a loss of effect of the micro current interrupter.

c. In the event of heat adjustment and heat measurement there is the risk of contact between the bimetallic plate and the bimetallic mount and a short circuit. For the purpose of solving the problems listed above, according to the presently available prior art, three insulation plates are provided at the three problem locations listed above. However, these three insulation plates all have to be mounted manually, which costs time and labor.

Content of the Invention:

The problem addressed by the present invention consists in providing an insulation plate in the case of which problems such as the occurrence of a flashover can be avoided. The present invention additionally provides a micro current interrupter with use of the relevant insulation plate.

In accordance with one practical exemplary embodiment of the present invention, an insulation plate is provided which comprises a first insulation part, a second insulation part, a third insulation part, an extension part, a first connection part and a second connection part, wherein the above-designated first connection part is situated between the above-designated first insulation part and the abovedesignated second insulation part and connects these two, wherein a through opening is provided at the above-designated second insulation part, wherein the above-designated third insulation part is connected to the above-designated second insulation part by a bend and is provided in proximity to the through opening situated at the above-designated second insulation part, wherein the abovedesignated extension part is connected to the above-designated first insulation part by the above-designated second connection part and wherein a first cutout opening is provided in a surrounding manner between the above-designated extension part, the above-designated second connection part and the above-designated first insulation part, wherein a second cutout opening is provided at the abovedesignated extension part, wherein the opening directions of the above-designated first cutout opening and the above-designated second cutout opening are opposite to one another.

Furthermore, it is provided that the above-designated insulation plate is a construction made from one piece.

Furthermore, it is provided that in each case at least one bend is provided at the above-designated first insulation part, the abovedesignated second insulation part, the above-designated third insulation part and the above-designated extension part, wherein the above-designated bend runs vertically with respect to the longitudinal direction of the above-designated insulation plate.

Furthermore, it is provided that the above-designated third insulation part has a first protection part and a second protection part, wherein the above-designated first protection part and the above-designated second protection part are connected by a bend.

Furthermore, it is provided that the above-designated extension part has a first extension plate and a second extension plate, wherein the first end of the above-designated first extension plate is connected to the above-designated first insulation part by the above-designated second connection part, wherein a bend is formed at the first extension plate in proximity to the nearer end of the abovedesignated second connection part, wherein the second end of the above-designated first extension plate is connected to the second extension plate by a bend, wherein the above-designated second cutout opening is formed at the above-designated first extension plate in proximity to the above-designated second extension plate (145).

In accordance with another practical exemplary embodiment of the present invention, a micro current interrupter is provided which has a bimetallic plate, a bimetallic mount and a flexible line, wherein the above-designated bimetallic plate has a front part and a rear part, wherein the above-designated bimetallic mount and the abovedesignated bimetallic plate are provided adjacent to one another, and wherein the above-designated bimetallic mount has a first contact part and a second contact part, wherein the abovedesignated second contact part is provided in proximity to the abovedesignated front part of the above-designated bimetallic plate, wherein the above-designated first contact part is provided in proximity to the above-designated rear part of the above-designated bimetallic plate, wherein the above-designated flexible line is provided in proximity to the above-designated front part of the above-designated bimetallic plate, wherein the above-designated micro current interrupter additionally has an above-designated insulation plate, wherein the above-designated first insulation part of the above-designated insulation plate is situated between the abovedesignated bimetallic plate and the above-designated first contact part, wherein the above-designated second insulation part of the above-designated insulation plate is situated between the abovedesignated bimetallic plate and the above-designated second contact part, wherein the above-designated front part of the abovedesignated bimetallic plate after leading through the abovedesignated through opening at the above-designated second insulation part is protected by the above-designated third insulation part of the above-designated insulation plate, wherein the abovedesignated first cutout opening and the above-designated second cutout opening of the above-designated insulation plate are provided from two mutually opposite directions across the bimetallic plate.

Furthermore, it is provided that the above-designated first connection part of the above-designated insulation plate extends along the above-designated bimetallic plate between the abovedesignated first insulation part and the above-designated second contact part.

Furthermore, it is provided that the above-designated first insulation part, the above-designated second insulation part and the abovedesignated first connection part of the above-designated insulation plate are situated at the first side of the above-designated bimetallic plate, while the above-designated extension part is situated at the second side of the above-designated bimetallic plate.

In the case of the insulation plate and in the case of the micro current interrupter with use of the relevant insulation plate according to the practical exemplary embodiments of the present invention, the above-designated first insulation part, the above-designated second insulation part and the above-designated third insulation part are provided and, consequently, the locations having the problem of a flashover that are present according to the presently available prior art are separated from one another. Moreover, the first cutout opening and the second cutout opening are routed from two mutually opposite directions across the bimetallic plate and a through opening led through the second insulation part is provided at the front part of the bimetallic plate, such that the insulation plate can be fitted to the bimetallic plate rapidly and simply and, moreover, problems such as flashover that exist in the presently available prior art can be avoided. Moreover, in the case of the present invention, in contrast to the presently available prior art with adhesive mounting three times, the insulation plate is mounted only once, which saves time and labor. Moreover, the production process is stable, in conjunction with high conformity of the products and efficient cost reduction.

The explanations given above are merely a general description of the present invention in order to allow a clearer understanding of the technical conception of the present invention and the implementation thereof on the basis of the content of the description. In order to permit a simple understanding of the abovementioned and further objectives, special features and advantages of the present invention, preferred practical exemplary embodiments together with figures are explained in the manner presented below.

Explanation of the Figures:

Figure 1 illustrates the insulation plate from one practical exemplary embodiment of the present invention.

Figure 2 illustrates the micro current interrupter from one practical exemplary embodiment of the present invention.

Figure 3 shows the enlarged illustration of some of the elements from figure 1.

Figure 4 shows the illustration from figure 3 from a different angle.

In this case, the reference signs in the figures have the following meanings:

100

110 First 120 Second

Insulation plate insulation part insulation part

122

130 Third

132 First

<td> Through opening</td><td> insulation part</td><td> protection part</td>

<td> 135 Second</td><td> 140 Extension part</td><td> 142 First</td>

<td> protection part</td><td> 145 Second</td><td> extension plate</td>

<td> 143 Second</td><td> extension plate</td><td> 150 First</td>

<td> cutout opening</td><td> 160 First</td><td> connection part</td>

<td> 152 Second</td><td> cutout opening</td><td> 170 Bend</td>

<td> connection part</td><td> 210 Bimetallic plate</td><td> 212 Front part</td>

<td> 200 Micro</td><td> 230 Flexible</td><td> 240 First</td>

<td> current interrupter</td><td> line</td><td> contact part</td>

220

Bimetallic mount

250 Second contact part

Practical Exemplary Embodiments:

In order to afford a better understanding of the technical problem to be solved by the present invention, of the technical planning design and of the advantages of the present invention, a further detailed explanation of the present invention is given in the manner presented below with reference to the accompanying figures and with reference to practical exemplary embodiments. It should be understood that the concrete practical exemplary embodiments described here serve merely for clarifying the present invention, without restricting the present invention in any way.

Figure 1 illustrates the insulation plate 100 from one practical exemplary embodiment of the present invention. As shown in figure 1, the insulation plate 100 can comprise a first insulation part 110, a second insulation part 120, a third insulation part 130, an extension part 140, a first connection part 150 and a second connection part 152. In one practical exemplary embodiment it is provided that the insulation plate 100 can be produced as an insulation plate made from one piece.

In concrete terms it is provided that the first insulation part 110 on the whole has a square form, wherein a bend 170 is formed thereon. The bend 170 can run on the whole vertically with respect to the longitudinal direction of the insulation plate 100.

The second insulation part 120 has on the whole a square form, wherein a bend 170 is provided thereon. In addition, a through opening 122 is provided at the second insulation part 120.

The first connection part 150 has on the whole a strip form, wherein the first connection part 150 is situated between the first insulation part 110 and the second insulation part 120 and connects these two.

The third insulation part 130 is connected to the second insulation part 120 by a bend 170 and is provided in proximity to the through opening 122 situated at the second insulation part 120. The third insulation part 130 and the first connection part 150 are situated at two mutually opposite ends of the second insulation part 120. The third insulation part 130 has a first protection part 132 and a second protection part 135, wherein the first protection part 132 and the second protection part 135 are connected by a bend 170.

The end of the first side of the extension part 140 is connected to the end of the first side of the first insulation part 110 by the second connection part 152, wherein a first cutout opening 160 is provided in a surrounding manner between the extension part 140, the second connection part 152 and the first insulation part 110. The extension part 140 and the first connection part 150 are situated at two mutually opposite ends of the first insulation part 110. The extension part 140 has a first extension plate 142 and a second extension plate 145, wherein the first end of the first extension plate 142 is connected to the first insulation part 110 by the second connection part 152, wherein a bend 170 is formed at the first extension plate 142 in proximity to the nearer end of the second connection part 152, wherein the second end of the first extension plate 142 is connected to the second extension plate 145 by a bend 170. Moreover, a second cutout opening 143 is formed at the first extension plate 142 in proximity to the nearer end of the second extension plate 145. The opening directions of the first cutout opening 160 and of the second cutout opening 143 are opposite to one another.

The concrete construction of the insulation plate 100 from one practical exemplary embodiment of the present invention was described in the manner presented above. The use of the insulation plate 100 is briefly explained in the manner resented below on the basis of the example of its use as shown in figure 2.

Figure 2 illustrates the micro current interrupter 200 from one practical exemplary embodiment of the present invention. As shown in figure 2, the micro current interrupter 200 has a bimetallic plate 210, a bimetallic mount 220, a flexible line 230 and the abovedesignated insulation plate 100. The bimetallic mount 220 and the bimetallic plate 210 are provided adjacent to one another and the bimetallic mount 220 has a first contact part 240 and a second contact part 250. It should be explained at this juncture that the first contact part 240 here is that part of the micro current interrupter 200 at the bimetallic mount 220 with which the bimetallic plate 210 possibly has contact in the event of heat regulation and heat measurement. The second contact part 250 here is that part of the micro current interrupter 200 at the bimetallic mount 220 which possibly sticks to the bimetallic mount 220 upon the bending of the bimetallic plate 210 under the action of heat. As shown in figure 3 and figure 4, the second contact part 250 is provided in proximity to the front part 212 of the bimetallic plate 210, wherein the first contact part 240 is provided in proximity to the rear part of the bimetallic plate 210.

The flexible line 230 is provided in proximity to the front part of the bimetallic plate 210, wherein the flexible line 230 and the second contact part 250 can be provided at the two mutually opposite sides of the front part of the bimetallic plate 210.

As shown in figure 4, the first insulation part 110 of the insulation plate 100 is situated between the bimetallic plate 210 and the first contact part 240, wherein the second insulation part 120 of the insulation plate 100 is situated between the bimetallic plate 210 and the second contact part 250, wherein the first connection part 150 of the insulation plate 100 extends along the bimetallic plate 210 between the first insulation part 110 and the second contact part 250 and connects these two. The first insulation part 110, the second insulation part 120 and the first connection part 150 of the insulation plate 100 are situated at the same side of the bimetallic plate 210, for example at the first side. The front part 212 of the bimetallic plate 210 after leading through the through opening 122 at the second insulation part 120 is protected by the third insulation part 130 of the insulation plate 100. In concrete terms it is provided that the first protection part 132 of the third insulation part 130 is situated at the second side of the bimetallic plate 210 and separates the front end 212 of the bimetallic plate 210 from the flexible line 230. At the same time, the second protection part 135 of the third insulation part 130 covers the upper end of the front part 212 of the bimetallic plate 210 in order to ensure a further separation between the front part 212 of the bimetallic plate 210 and the flexible line 230.

The extension part 140 is provided at the second side of the bimetallic plate 210 and is situated in proximity to the rear end of the bimetallic plate 210, wherein the first cutout opening 160 and the second cutout opening 143 are provided from two mutually opposite directions across the bimetallic plate 210. In this way, by virtue of the fact that the first cutout opening 160 and the second cutout opening 143 are provided from two mutually opposite directions across the bimetallic plate 210 and by virtue of the fact that the front part 212 of the bimetallic plate 210 is led through the through opening 122 at the second insulation part 120, this enables the insulation plate 100 to be fitted to the bimetallic plate 210 simply and rapidly. Problems such as a flashover, etc. that exist in the presently available prior art are avoided in this case. Moreover, in the case of the present invention, in contrast to the presently available prior art with adhesive mounting three times, the insulation plate 100 is mounted only once, which saves time and labor. Moreover, the production process is stable, in conjunction with high conformity of the products and efficient cost reduction.

Moreover, by providing the bend 170 it can be ensured that the insulation plate 100 is adhesively bonded flush with the bimetallic plate 210.

To summarize, it can be stated that the present invention discloses an insulation plate which comprises a first insulation part, a second insulation part, a third insulation part, an extension part, a first connection part and a second connection part, wherein the abovedesignated first connection part is situated between the abovedesignated first insulation part and the above-designated second insulation part and connects these two, wherein a through opening is provided at the above-designated second insulation part, wherein the above-designated third insulation part is connected to the abovedesignated second insulation part by a bend and is provided in proximity to the through opening situated at the above-designated second insulation part, wherein the above-designated extension part is connected to the above-designated first insulation part by the above-designated second connection part and wherein a first cutout opening is provided in a surrounding manner between the abovedesignated extension part, the above-designated second connection part and the above-designated first insulation part, wherein a second cutout opening is provided at the above-designated extension part, wherein the opening directions of the above-designated first cutout opening and the above-designated second cutout opening are opposite to one another. The present invention additionally discloses a micro current interrupter using the relevant insulation plate.

The explanations given above merely involve preferred practical exemplary embodiments of the present invention, without restricting the present invention in any way. All modifications, equivalents, improvements that come under the teaching and principle of the present invention are all included in the scope of protection of the present invention.