CN216749719U - Arc extinguish chamber for vacuum circuit breaker - Google Patents
Arc extinguish chamber for vacuum circuit breaker Download PDFInfo
- Publication number
- CN216749719U CN216749719U CN202220307146.0U CN202220307146U CN216749719U CN 216749719 U CN216749719 U CN 216749719U CN 202220307146 U CN202220307146 U CN 202220307146U CN 216749719 U CN216749719 U CN 216749719U
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- contact
- baffle
- circuit breaker
- arc extinguish
- extinguish chamber
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Abstract
The utility model discloses an arc extinguish chamber for a vacuum circuit breaker. Arc-extinguishing chamber for vacuum circuit breaker, comprising: the arc extinguishing chamber is provided with a fixed contact and a moving contact, the fixed contact is provided with a middle contact, the moving contact is provided with a first baffle, the inner wall of one side of the arc extinguishing chamber is provided with two first springs, and the two first springs are both connected with the first baffle; install the second baffle on the middle contact, two second springs, two are installed to one side of second baffle the second spring all with the inner wall connection of explosion chamber. The arc extinguish chamber for the vacuum circuit breaker can break a path between the moving contact and the fixed contact under the condition that the moving contact is adhered to the middle contact, so that electricity is safer.
Description
Technical Field
The utility model relates to the technical field of vacuum circuit breakers, in particular to an arc extinguish chamber for a vacuum circuit breaker.
Background
In the field of high-voltage electrical appliances, a high-voltage vacuum circuit breaker is a core component in a high-voltage switch assembly, and is electrical equipment for controlling and protecting an electric power system. The vacuum circuit breaker mainly comprises a vacuum arc extinguish chamber, an operating mechanism and a bracket, wherein the vacuum arc extinguish chamber and the operating mechanism are arranged on a rack, a circuit needing to be switched on and off is connected into the vacuum arc extinguish chamber, the vacuum arc extinguish chamber mainly comprises a porcelain shell, a fixed contact and a moving contact which play an insulating role, the operating mechanism is connected with the moving contact of the vacuum arc extinguish chamber in a linkage manner, and the switching-on and the switching-off of the upper moving contact in the vacuum arc extinguish chamber are controlled, so that the switching-on and the switching-off of the circuit breaker are realized.
However, in actual use, because operating device's reason can cause the phenomenon of moving contact and static contact virtual connection, this kind of condition though can the circular telegram, can produce higher temperature between moving contact and the static contact, long-time high temperature can cause the position metal that moving contact and static contact contacted to melt to cause moving contact and static contact adhesion, unable normal outage, and cause serious electric shock accident.
Therefore, it is necessary to provide an arc-extinguishing chamber for a vacuum circuit breaker to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides the arc extinguish chamber for the vacuum circuit breaker, which can break a path between the moving contact and the fixed contact under the condition that the moving contact is adhered to the middle contact, so that the power consumption is safer.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
arc-extinguishing chamber for vacuum circuit breaker, comprising: the arc extinguish chamber is provided with a fixed contact and a moving contact, the fixed contact is provided with an intermediate contact, the moving contact is provided with a first baffle, the inner wall of one side of the arc extinguish chamber is provided with two first springs, and the two first springs are both connected with the first baffle; install the second baffle on the middle contact, two second springs, two are installed to one side of second baffle the second spring all with the inner wall connection of explosion chamber.
Preferably, a first sliding groove is formed in one side of the middle contact, the first sliding groove is matched with the fixed contact, a second sliding groove is formed in one end of the fixed contact, an inserting rod is arranged in the first sliding groove, and the inserting rod is matched with the second sliding groove.
Preferably, a limiting component is arranged on the inner wall of one side of the arc extinguish chamber and used for limiting the second baffle to move back.
Preferably, the limiting assembly comprises a square groove, the square groove is formed in the inner wall of one side of the arc extinguish chamber, a square rod is installed in the square groove, a third spring is arranged in the square groove, and two ends of the third spring are respectively connected with one side of the square groove and the square rod.
Preferably, the second baffle is provided with a chute, one end of the square rod is provided with an inclined plane, and the chute is matched with the inclined plane of the square rod.
Compared with the prior art, the utility model has the following beneficial effects:
(1) according to the utility model, after the moving contact is adhered to the middle contact, once the power is off, the moving contact moves back under the action of the two first springs, and meanwhile, the moving contact can drive the middle contact adhered to the moving contact to move until the middle contact is separated from the static contact, and at the moment, the power supply can be cut off;
(2) the limiting assembly is used for limiting the second baffle to move back, so that the middle contact is limited to move back, and the middle contact and the static contact are kept in a separated state;
(3) according to the utility model, after the middle contact and the moving contact are adhered, the moving contact moves back to drive the middle contact to move, the middle contact drives the second baffle to move, the chute on the second baffle can press the square rod to move towards the square groove, and after the second baffle moves to the position below the square rod, the third spring releases elasticity to push the square rod to return to the initial position, so that the square rod has a limiting effect on the second baffle, the middle contact can not be contacted with the fixed contact any more, thus the fixed contact and the moving contact are ensured to be in an open circuit state, the operation with diseases of equipment is avoided, and the electricity safety is further improved.
Drawings
Fig. 1 is a schematic structural diagram of an arc-extinguishing chamber for a vacuum circuit breaker according to the present invention;
fig. 2 is a schematic cross-sectional structural view of an arc-extinguishing chamber for a vacuum circuit breaker according to the present invention;
fig. 3 is a schematic diagram of a state in which an intermediate contact of an arc extinguishing chamber for a vacuum circuit breaker is separated from a fixed contact according to the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
fig. 5 is a schematic structural diagram of a second baffle in an arc extinguish chamber for a vacuum circuit breaker provided by the utility model.
Wherein, the names corresponding to the reference numbers are: 1-arc extinguish chamber, 2-static contact, 3-moving contact, 4-middle contact, 5-first baffle, 6-first spring, 7-second baffle, 8-second spring, 9-first chute, 10-second chute, 11-inserted bar, 12-square groove, 13-square bar, 14-third spring and 15-chute.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
As shown in fig. 1 to 5, an arc-extinguishing chamber for a vacuum circuit breaker provided by the present invention comprises: an arc extinguish chamber 1, a fixed contact 2 and a movable contact 3 are fixedly installed on the arc extinguish chamber 1 in a sliding and sealing mode, a middle contact 4 is installed on the fixed contact 2 in a sliding mode, when the arc extinguish chamber is normally used, the movable contact 3 is in contact with the middle contact 4, when the movable contact 3 moves back, the movable contact 3 is separated from the middle contact 4, a first baffle 5 is fixedly installed on the movable contact 3, two first springs 6 are fixedly installed on the inner wall of one side of the arc extinguish chamber 1, the two first springs 6 are both fixedly connected with the first baffle 5, when the movable contact 3 moves back, the first springs 6 contract to pull the first baffle 5 to move back, so that the movable contact 3 moves back, after the movable contact 3 is adhered to the middle contact 4, once power is off, the movable contact 3 moves back under the action of the two first springs 6, and meanwhile, the movable contact 3 can drive the middle contact 4 adhered to the movable contact to move, until the middle contact 4 is separated from the static contact 2, the power supply can be disconnected at the moment, compared with the traditional arc extinguish chamber, the moving contact 3 can disconnect the passage between the moving contact 3 and the static contact 2 under the condition that the moving contact is adhered to the middle contact 4, so that the electricity utilization is safer; the middle contact 4 is fixedly provided with a second baffle 7, one side of the second baffle 7 is fixedly provided with two second springs 8, the two second springs 8 are fixedly connected with the inner wall of the arc extinguish chamber 1, and the second springs 8 are matched with the second baffle 7, so that the middle contact 4 can be stably contacted with the static contact 2.
A first sliding groove 9 is formed in one side of the middle contact 4, the first sliding groove 9 is matched with the static contact 2, a second sliding groove 10 is formed in one end of the static contact 2, an inserting rod 11 is arranged in the first sliding groove 9, the inserting rod 11 is matched with the second sliding groove 10, and a larger contact area is kept between the middle contact 4 and the static contact 2 through the arrangement of the first sliding groove 9, the second sliding groove 10 and the inserting rod 11, so that current can pass through the middle contact.
And a limiting component is arranged on the inner wall of one side of the arc extinguish chamber 1 and is used for limiting the second baffle 7 to move back, so that the middle contact 4 is limited to move back, and the middle contact 4 and the static contact 2 are kept in a separated state.
Further, spacing subassembly includes square groove 12, square groove 12 has been seted up on one side inner wall of explosion chamber 1, slidable mounting has square pole 13 in square groove 12, be equipped with third spring 14 in square groove 12, the both ends of third spring 14 respectively with one side of square groove 12 with square pole 13 fixed connection.
Furthermore, a chute 15 is formed in the second baffle 7, an inclined surface is formed in one end of the square rod 13, after the middle contact 4 is adhered to the moving contact 3, the moving contact 3 moves back to drive the middle contact 4 to move, the middle contact 4 drives the second baffle 7 to move, the chute 15 in the second baffle 7 can press the square rod 13 to move into the square groove 12, until the second baffle 7 moves to the position below the square rod 13, the third spring 14 releases elasticity to push the square rod 13 to return to the initial position, and therefore the square rod 13 plays a limiting role in the second baffle 7, so that the middle contact 4 can not be in contact with the static contact 2 any more, the state of the static contact 2 and the moving contact 3 is in an open circuit state, operation with diseases of equipment is avoided, and electricity safety is further improved.
When the circuit breaker is used, the moving contact 3 acts under the influence of the operating mechanism and is in contact with the middle contact 4 to form a channel, when the circuit breaker is broken, the moving contact 3 is separated from the middle contact 4, and if the moving contact 3 is adhered to the middle contact 4, the moving contact moves back to drive the middle contact 4 to move, so that the middle contact 4 is separated from the static contact 2, the circuit breaker is formed, and the safe use of the circuit is ensured;
moving contact 3 and 4 adhesion backs of middle contact, the device just can not use normal use, and change in time should continue to use this device for avoiding personnel under the condition of knowing, and spacing subassembly here will play a role, and square pole 13 among the stop gear blocks second baffle 7, makes second baffle 7 can not move back to make this device can not form the route, further improved the security of this device.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or changes made within the spirit and scope of the main design of the present invention, which still solve the technical problems consistent with the present invention, should be included in the scope of the present invention.
Claims (5)
1. An arc-extinguishing chamber for a vacuum circuit breaker, comprising:
the arc extinguish chamber is provided with a fixed contact and a moving contact, the fixed contact is provided with an intermediate contact, the moving contact is provided with a first baffle, the inner wall of one side of the arc extinguish chamber is provided with two first springs, and the two first springs are both connected with the first baffle;
install the second baffle on the middle contact, two second springs, two are installed to one side of second baffle the second spring all with the inner wall connection of explosion chamber.
2. The arc extinguish chamber for the vacuum circuit breaker according to claim 1, wherein a first chute is formed at one side of the middle contact, the first chute is adapted to the fixed contact, a second chute is formed at one end of the fixed contact, an insertion rod is arranged in the first chute, and the insertion rod is adapted to the second chute.
3. The arc extinguish chamber for the vacuum circuit breaker according to claim 1, wherein a limit component is arranged on one side inner wall of the arc extinguish chamber and used for limiting the second baffle to move back.
4. The arc extinguish chamber for the vacuum circuit breaker according to claim 3, wherein the limiting component comprises a square groove, the square groove is formed in one side of the inner wall of the arc extinguish chamber, a square rod is installed in the square groove, a third spring is arranged in the square groove, and two ends of the third spring are respectively connected with one side of the square groove and the square rod.
5. The arc extinguish chamber for the vacuum circuit breaker as claimed in claim 4, wherein the second baffle is provided with an inclined groove, one end of the square rod is provided with an inclined surface, and the inclined groove is matched with the inclined surface of the square rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220307146.0U CN216749719U (en) | 2022-02-16 | 2022-02-16 | Arc extinguish chamber for vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220307146.0U CN216749719U (en) | 2022-02-16 | 2022-02-16 | Arc extinguish chamber for vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216749719U true CN216749719U (en) | 2022-06-14 |
Family
ID=81918788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220307146.0U Active CN216749719U (en) | 2022-02-16 | 2022-02-16 | Arc extinguish chamber for vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216749719U (en) |
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2022
- 2022-02-16 CN CN202220307146.0U patent/CN216749719U/en active Active
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