TWM453949U - Gas breaker with a moveable quiet arc contact - Google Patents

Description

Gas circuit breaker with movable static arc contact

The present invention relates to a gas circuit breaker having a movable static arc contact, and more particularly to a gas circuit breaker having a movable static arc contact using a movable static arc contact to change a breaking position.

Please refer to the first figure. The first figure shows the structural cross-section of a conventional gas circuit breaker. As shown, the conventional gas circuit breaker PA100 includes a moving side PA1 and a fixed side PA2. The moving side PA1 includes a moving arc contact PA11, a nozzle PA12, a cylinder PA13 and a piston PA14. The fixed side PA2 includes a static arc contact PA21; wherein the static arc contact PA21 of the fixed side PA2 is a fixed structure. When the circuit is closed and closed, the arc is blown off by the air pressure between the nozzle PA12 of the moving side PA1 and the piston PA13 of the piston PA14. The arc is blown by the gas. Producing a high-pressure gas; however, the instantaneous gas pressure at the initial separation of the moving side PA1 from the fixed side PA2 does not immediately reach the arc caused by the high voltage between the static arc contact PA21 and the arcing contact PA11. The larger diameter cylinder PA13 is confined to the smaller diameter nozzle PA12 to accelerate the desired gas pressure.

In addition, the mainstream of gas circuit breakers in the modern market is assisting in the compression of air by thermal expansion. Please refer to the second figure, which shows a schematic cross-sectional view of another conventional gas circuit breaker. As shown in the figure, a gas circuit breaker PA200 is similar to the gas circuit breaker PA100 described above, and the difference mainly lies in that the gas circuit breaker PA200 is mainly provided with a separate gas chamber PA131' in front of a cylinder PA13' and utilizes an arc breaking. Restricted heating The gas is introduced to raise the pressure of the gas ejected from the nozzle PA12, and then the piston PA14' is pressed to continue the arcing, so that the diameter of the cylinder PA13' can be reduced and the arc can be effectively extinguished. However, there are two contradictions in the way that the arc is heated to provide gas pressure by the independent air chamber: 1. The arc blows off the arc heat mainly by the airflow, but the higher the temperature of the initial gas, the heat is taken away. The worse the effect is; 2. The thermal expansion effect is not great when the small current is disconnected, so the gas pressure that the independent air chamber can provide is limited.

Therefore, the creator of this case believes that it is necessary to develop a new gas circuit breaker, which can effectively increase the pressure of the primary gas, thereby cutting off the arc.

In view of the above, in the prior art, the conventional gas circuit breaker has a small initial pressure when the moving side is separated from the fixed side, and has a limited blow-off effect on the arc; and the arc is heated to provide an independent air chamber to provide When high-pressure gas is used, it is often impossible to effectively heat the independent gas chamber because the current is too small, thereby affecting the blow-out effect of the arc.

Therefore, the main purpose of the present invention is to provide a gas circuit breaker that uses a slidable static arc contact to change the position of the open circuit between the static arc contact and the arcuate contact, so that the piston first faces the air chamber. The gas is pressurized and then ejected from the nozzle.

The necessary technical hand used to solve the problems of the prior art The segment provides a gas circuit breaker having a movable static arc contact, comprising a fixed end and a movable end. The fixed end includes a fixed end body, a sliding sleeve and a static arc contact. The sliding sleeve is disposed on the fixed end body; the static arc contact is slidably disposed on the sliding sleeve, and has a static contact portion, a stop portion and a collector contact, the stop portion and the collector contact The sub-system is used to move the static arc contact in a limited position within the sliding sleeve. The movable end comprises a movable end body, a nozzle, a moving arc contact and a piston. The movable end system is detachably engaged with the fixed end body; the nozzle is disposed at one end of the movable end body, and the nozzle is cooperatively sleeved on the static arc contact; the movable arc contact is disposed in the movable end body, and The utility model has a partitioning portion and a movable contact portion. The partitioning portion forms a gas chamber with the movable end body. The movable contact portion integrally extends from the partition portion into the nozzle, and the movable contact portion is further clamped to the static contact portion passing through the nozzle. The piston system is movably disposed in the air chamber and is used to compress the gas in the air chamber.

Wherein, when the movable end body moves in a first direction and is separated from the fixed end body, the static arc contact is driven by the moving arc contact to move in the first direction, and the piston relatively compresses the gas in the air chamber. Therefore, when the stopper portion abuts against the sliding sleeve to stop the static arc contact from moving in the first direction and is separated from the arcing contact, the compressed gas is ejected from the nozzle to blow out the static arc contact and the arc contact. The arc generated by the separation.

An auxiliary technical means derived from the above-mentioned necessary technical means is that a return spring is further arranged between the stopping portion and the sliding sleeve, so that the static arc contact is quickly restored when the static arc contact is separated from the moving arc contact. .

An auxiliary technical means derived from the above-mentioned necessary technical means is that the fixed end further comprises an elastic sleeve, and the elastic sleeve comprises an elastic sleeve body and a buffer spring. The elastic bushing system is disposed in the fixed end body and has an abutting portion, wherein the stopping portion is moved in a limit position between the abutting portion and the sliding bushing; the buffer spring is disposed on the stopping portion and the abutting portion It between. Preferably, the static arc contact further has an extension shaft and an extension stop portion, the extension shaft is disposed through the abutment portion, and the extension stop portion is disposed on the extension shaft and is disposed at one end of the abutment portion, and is elastic The sleeve further includes a return spring, and the return spring is disposed between the extended stop and the abutment.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the static contact portion is provided with a groove, and the movable contact portion is engaged with the groove.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the static contact portion is provided with a hook structure, and the movable contact portion is hooked to the hook structure.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the movable contact portion includes a plurality of clip members, and the clip member clips against the static contact portion.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the partition has at least one opening, and the air chamber communicates with the nozzle via the opening.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the fixed end body has a set of joints, and the sleeve part is sleeved on the movable end body.

As can be seen from the above, compared with the gas circuit breaker described in the prior art, in the gas circuit breaker provided by the present invention, the slidable static arc contact is moved in the first direction by the moving arc contact. The separation between the arcing contact and the static arc contact can be delayed, so that the piston can effectively increase the gas pressure within the delayed distance, and increase when the arcing contact is separated from the static arcing contact. The pressed gas is ejected through the nozzle and blows off an arc generated by the high voltage between the static arc contact and the arcuate contact.

The specific embodiments used in the present application will be further illustrated by the following examples and drawings.

Please refer to the third to fifth figures. The third to fifth figures are used to show a schematic cross-sectional view of the gas circuit breaker provided by the first embodiment of the present invention from being joined to being separated. As shown, a gas circuit breaker 100 having a movable static arc contact includes a fixed end 1 and a movable end 2. The fixed end 1 includes a fixed end body 11, a sliding sleeve 12 and a static arc contact 13.

The fixed end body 11 has a set of joints 111. The sliding sleeve 12 is disposed on the fixed end body 11. The static arc contact 13 is slidably disposed on the sliding sleeve 12, and the static arc contact 13 has a static contact portion 131, a stop portion 132 and a collector contact 133, and the stop portion 132 and the collector The contact 133 is used to move the static arc contact 13 in a position within the sliding sleeve 12.

The movable end 2 includes a movable end body 21, a nozzle 22, a two-moving arc contact 23, and a piston 24. The movable end body 21 is detachably fitted to the fitting portion 111 of the fixed end body 11.

The nozzle 22 is disposed at one end of the movable end body 21, and the nozzle 22 is sleevedly fitted to the static arc contact 13 . The movable arc contact 23 is disposed in the movable end body 21 and has a partitioning portion 231 and a movable contact portion 232. The partitioning portion 231 forms a gas chamber AC with the movable end body 21, and the partitioning portion 231 has two openings 2311 and 2312, the air chamber AC communicates with the nozzle 22 via the openings 2311 and 2312. The movable contact portion 232 extends integrally from the partition portion 231 into the nozzle 22, and the movable contact portion 232 is further clamped against the static contact portion 131 passing through the nozzle 22; wherein the movable contact portion 232 includes two clamping members 2321. 2322, the clip members 2321 and 2322 are clamped against the static contact portion 131. The piston 24 is movably disposed in the plenum AC and is used to compress the gas in the plenum AC.

Wherein, when the movable end body 21 moves along a first direction L1 When the fixed end body 11 is separated, the static contact portion 131 of the static arc contact 13 is driven by the moving arc contact 232 to move the static arc contact 13 in the first direction L1, and the piston 24 will be opposite to the compressed air chamber AC. The gas inside causes the static arc contact 13 to stop moving in the first direction L1 when the stopper portion 132 abuts against the sliding sleeve 12 and thus is separated from the arcing contact 23, and is compressed by the piston 24. The gas is ejected from the nozzle 22 to blow off the arc generated by the separation between the static arc contact 13 and the arcing contact 23.

Please refer to the sixth drawing, which is a schematic cross-sectional view showing the gas circuit breaker provided in the second embodiment of the present invention. As shown, a gas circuit breaker 100a having a movable static arc contact is similar to the gas circuit breaker 100 provided in the first embodiment described above, except that one of the fixed ends 1a of the gas circuit breaker 100a further includes a reset. a spring 14a, and the return spring 14a is disposed between the stopping portion 132 and the sliding sleeve 12, and when the arcing contact 23 pulls and releases the static arc contact 13a in the first direction L1, by the return spring 14a The returning elastic force can quickly return the static arc contact 13a to the original position in the second direction L2, so that the arc between the static arc contact 13a and the arcing contact 23 can be cut off more quickly. Further, in the present embodiment, a static contact portion 131a is formed in a round shape, and the force of the movable arc contact 23 to sandwich the static arc contact 13a can be effectively increased.

Please refer to the seventh figure, which is a schematic cross-sectional view showing the gas circuit breaker provided in the third embodiment of the present invention. As shown, a gas circuit breaker 100b having a movable static arc contact is similar to the gas circuit breaker 100 provided in the first embodiment described above, except that one of the fixed ends 1b of the gas circuit breaker 100b further includes an elastic The sleeve 15b, and the elastic sleeve 15b includes an elastic sleeve body 151b, a buffer spring 152b and a return spring 153b. The elastic sleeve body 151b is disposed in the fixed end body 11 and has an abutting portion 1511b. The stopper portion 132 is moved in a positional restriction between the abutting portion 1511b and the sliding sleeve 12. Slow The flushing spring 152b is disposed between the stopper portion 132 and the abutting portion 1511b.

In addition, the static arc contact 13b further has an extension shaft 134b and an extension stop portion 135b. The extension shaft 134b is disposed through the abutting portion 1511b, and the extension stopper portion 135b is disposed at one end of the abutting portion 1511b, and the return spring 153b is disposed at the extending stop portion 135b and the abutting portion 1511b. between.

As described above, when the movable end 2b is engaged with the fixed end 1b, the shock generated by the pushing of the movable arc contact 23b by the static arc contact 13b can be effectively slowed down by the buffer spring 152b, and the static arc contact can be slowed down. The static arc contact 13b is loosened between the 13b and the arcing contact 23b by the return spring 153b and the high pressure gas to move in the second direction L2.

Please refer to the eighth figure. The eighth figure is used to show a cross-sectional view of the third embodiment of the present invention, in which the hook and the hook structure are mutually hooked between the static arc contact and the movable arc contact. As shown in the figure, the static contact portion 131b further has a hook structure 1311b, and one of the movable contact portions 232b is hooked to the hook structure 1311b, and is sandwiched between the clip member 2322b and the hook structure 1311b. By hooking each other, the arcing contact 23 can be effectively driven to drive the static arc contact 13.

Please refer to the ninth figure. The ninth figure is used to show a cross-sectional view of the fourth embodiment of the present invention, in which the static arc contact and the arcuate contact are mutually engaged by grooves. As shown in the figure, a static contact portion 131c is provided with a groove 1311c, and the movable contact portion 232 is engaged with the groove 1311c by the clamping members 2321, 2322, thereby effectively increasing the static arc contact 13 and The service life of the arcing contact 23.

It is believed that those who have ordinary knowledge in the technical field should be able to understand more easily after reading the above-disclosed techniques. The arcing contact drives the slidable static arc contact to move in the first direction, so that the separation between the arcing contact and the static arcing contact can be delayed, so that the piston can effectively increase the gas pressure within the delayed distance. And when the arc contact is separated from the static arc contact, the pressurized gas is sprayed through the nozzle, and the arc generated by the high voltage between the static arc contact and the arc contact is blown out.

In addition, the clamping force of the movable arc contact to clamp the static arc contact can be increased by the hook structure or the hook groove provided on the static arc contact; and the static arc contact can be effectively accelerated by the return spring The separation between the head and the arcing contact.

It can be seen from the above-mentioned embodiments of the present invention that the creation has an industrial use value. However, the above embodiments are merely illustrative of the preferred embodiments of the present invention, and those skilled in the art can make various other modifications and changes as described in the above embodiments of the present invention. However, all of the improvements and variations made in accordance with the present embodiment are still within the scope of the creative spirit and definition of the present invention.

PA100, PA200‧‧‧ gas circuit breaker

PA1‧‧‧ sports side

PA2‧‧‧ fixed side

PA11‧‧‧ arc contact

PA12‧‧‧ nozzle

PA13, PA13'‧‧‧ cylinder

PA131’‧‧‧ air chamber

PA14, PA14’‧‧‧ piston

PA21‧‧‧Static arc contact

100, 100a, 100b, 100c‧‧‧ gas circuit breakers with movable static arc contacts

1, 1a, 1b‧‧‧ fixed end

11‧‧‧Fixed end body

111‧‧‧ Included

12‧‧‧Sliding bushings

13, 13a, 13b‧‧‧ static arc contact

131, 131a, 131b, 131c‧‧‧ Static contact

1311b, 1311c‧‧‧ hook structure

132‧‧‧stop

133‧‧‧ Collector

134b‧‧‧Extension axis

135b‧‧‧Extension stop

14a‧‧‧Return spring

15b‧‧‧Flexible bushing

151b‧‧‧Flexible bushing body

1511b‧‧‧Apartment

152b‧‧‧buffer spring

153b‧‧‧Return spring

2, 2b‧‧‧ active end

21‧‧‧Active body

22‧‧‧Nozzles

23, 23b‧‧‧ arc contact

231‧‧‧Departure

2311, 2312‧‧‧ openings

232, 232b‧‧‧moving contact

2321, 2322, 2322b‧‧‧

24‧‧‧Piston

AC‧‧‧ air chamber

L1‧‧‧ first direction

L2‧‧‧ second direction

The first figure shows a schematic cross-sectional view of a conventional gas circuit breaker; the second figure shows a schematic cross-sectional view of another conventional gas circuit breaker; the third to fifth figures are used to show the first embodiment of the present creation. FIG. 6 is a cross-sectional view showing the gas circuit breaker provided in the second embodiment of the present invention; the seventh drawing is used to display the third embodiment of the present invention. The cross-sectional view of the gas circuit breaker; the eighth figure is used to show the cross-section between the static arc contact and the arc-moving contact with the hook and the hook structure in the third embodiment of the present creation The schematic diagram; and the ninth diagram are used to show a schematic cross-sectional view of the fourth embodiment of the present invention in which the static arc contact and the arcuate contact are engaged with each other by grooves.

100‧‧‧Gas circuit breakers with movable static arc contacts

1‧‧‧ fixed end

11‧‧‧Fixed end body

111‧‧‧ Included

12‧‧‧Sliding bushings

13‧‧‧Static arc contact

131‧‧‧Static contact

132‧‧‧stop

133‧‧‧ Collector

2‧‧‧ active end

21‧‧‧Active body

22‧‧‧Nozzles

23‧‧‧ arcing contacts

231‧‧‧Departure

2311, 2312‧‧‧ openings

232‧‧‧Moving contact

2321, 2322‧‧‧

24‧‧‧Piston

AC‧‧‧ air chamber

L1‧‧‧ first direction

L2‧‧‧ second direction

Claims (9)

A gas circuit breaker having a movable static arc contact comprises: a fixed end comprising: a fixed end body; a sliding sleeve disposed on the fixed end body; and a static arc contact slidably Provided in the sliding sleeve, and having a static contact portion, a stop portion and a collector contact, the stop portion and the collector contact are used to make the static arc contact in the sliding sleeve a movable end; a movable end comprising: a movable end body detachably engaged with the fixed end body; a nozzle disposed at one end of the movable end body, and the nozzle is cooperatively sleeved on The static arc contact; the movable arc contact is disposed in the movable end body, and has a partition portion and a movable contact portion, the partition portion forms a gas chamber with the movable end body, and the movable contact portion is integrally formed Extending from the partition into the nozzle, and the movable contact portion is further clamped to the static contact portion passing through the nozzle; a piston is movably disposed in the air chamber and is used to compress the air chamber a gas; wherein, when the movable end body is moved in a first direction When the fixed end body is separated, the static arc contact is driven by the moving arc contact to move in the first direction, and the piston relatively compresses the gas in the air chamber, thereby the stop portion Abutting the sliding sleeve to stop the static arc contact from moving in the first direction and separating from the moving arc contact, causing compressed gas to be ejected from the nozzle to blow out the static arc contact and the moving arc An arc generated by the separation between the contacts. A gas circuit breaker having a movable static arc contact according to claim 1, wherein a reset spring is further disposed between the stop portion and the sliding sleeve, whereby the static arc contact is When the arc contact is separated, the static arc contact is quickly reset. The gas circuit breaker having a movable static arc contact according to the first aspect of the invention, wherein the fixed end further comprises an elastic sleeve, the elastic sleeve comprises: an elastic sleeve body disposed on the The fixed end body has an abutting portion, wherein the stopping portion is moved in a position between the abutting portion and the sliding sleeve; and a buffer spring is disposed on the stopping portion and the abutting portion Between the ministries. The gas circuit breaker having a movable static arc contact according to claim 3, wherein the static arc contact further has an extension shaft and an extension stop, wherein the extension shaft is disposed at the end a connecting portion, the extending stop portion is disposed at one end of the abutting portion, and the elastic sleeve further includes a return spring, the return spring is disposed at the extending stop portion and the abutting portion Between the ministries. A gas circuit breaker having a movable static arc contact according to claim 1, wherein the static contact portion is provided with a groove, and the movable contact portion is engaged with the groove. The gas circuit breaker having a movable static arc contact according to the first aspect of the invention, wherein the static contact portion is provided with a hook structure, and the movable contact portion is hooked to the hook structure. The gas with movable static arc contact as described in item 1 of the patent application scope The body breaker, wherein the movable contact portion includes a plurality of clamping members, and the clamping members are clamped against the static contact portion. A gas circuit breaker having a movable static arc contact according to claim 1, wherein the partition has at least one opening through which the air chamber communicates with the nozzle. The gas circuit breaker with movable static arc contact according to claim 1, wherein the fixed end body has a set of joints, and the sleeve is fitted to the movable end body.