CN219534382U - Environment-friendly vacuum circuit breaker - Google Patents

Abstract

The utility model relates to an environment-friendly vacuum circuit breaker which comprises a machine frame, an isolation contact assembly and a circuit breaker assembly, wherein the isolation contact assembly comprises an isolation rotating shaft, three isolation movable contact blades, three upper isolation fixed contacts, three lower isolation fixed contacts and three grounding contacts, the circuit breaker assembly comprises three arc-extinguishing chambers, an insulating frame covered on the three arc-extinguishing chambers, a main shaft and three cams, the insulating frame comprises two insulating plates, four insulating partition plates and fixing plates, the two insulating plates are respectively arranged between the two insulating plates, the insulating plates correspond to the two arc-extinguishing chambers, an insulating cavity is formed between the four insulating partition plates and the two insulating plates, the insulating cavity is sleeved outside the three arc-extinguishing chambers, and insulating spacers are respectively arranged on the two sides of the main shaft, corresponding to the four insulating partition plates. The utility model has the advantages of simple structure, compact structure, stable and reliable performance and convenient assembly.

Description

Environment-friendly vacuum circuit breaker

Technical Field

The utility model relates to a vacuum circuit breaker, in particular to an environment-friendly vacuum circuit breaker.

Background

The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; the arc extinguishing device has the advantages of small volume, light weight, suitability for frequent operation and no maintenance in arc extinguishing, and is more popular in power distribution networks. The vacuum circuit breaker is an indoor distribution device in a 3-10 kV 50Hz three-phase alternating current system, can be used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants and substations, is particularly suitable for use places requiring oilless maintenance and frequent operation, and can be arranged in a centrally installed switchgear, a double-layer cabinet and a fixed cabinet to be used for controlling and protecting high-voltage electrical equipment. The structural design of the existing vacuum circuit breaker is unreasonable, the vacuum circuit breaker cannot be assembled in an integrated and modularized mode, the assembly is complicated, the creepage distance of the vacuum circuit breaker is small, the insulating performance is poor, and the use requirement of an environment-friendly gas cabinet cannot be met. And the environment-friendly vacuum circuit breaker has the defects of complex structure, unreliable performance and inconvenient assembly.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides an environment-friendly vacuum circuit breaker which has the advantages of simple structure, compact structure, stable and reliable performance and convenience in assembly.

In order to achieve the above purpose, the utility model adopts an environment-friendly vacuum circuit breaker, which comprises a machine framework, an isolating contact assembly arranged in the machine framework, and a circuit breaker assembly arranged on the machine framework, wherein the isolating contact assembly comprises an isolating rotating shaft which is rotatably arranged on the machine framework, three isolating movable contact blades which are respectively arranged on the isolating rotating shaft, three upper isolating fixed contacts, three lower isolating fixed contacts and three grounding contacts, the circuit breaker assembly comprises three arc extinguishing chambers which are respectively arranged on the three upper isolating fixed contacts, an insulating frame which covers the three arc extinguishing chambers, a main shaft which is rotatably arranged on the insulating frame, and three cams which are respectively arranged on the main shaft in a linkage manner and are used for driving the three arc extinguishing chambers to execute switching on/off, the insulating frame comprises two insulating plates which are respectively arranged on the machine framework corresponding to two sides of the three arc extinguishing chambers, four insulating partition plates which are respectively arranged between the two insulating plates, a fixing plate which is arranged between the two insulating plates, an insulating cavity which is sleeved outside the three chambers is formed between the four insulating partition plates, and the two insulating partition plates which are respectively arranged on two sides of the main shaft.

The beneficial effects of the structure are as follows: the integrated modularization of circuit breaker subassembly sets up on the mechanism frame, can realize the modularization assembly of circuit breaker subassembly and mechanism frame, and the assembly is more convenient. The insulating frame of shroud on three explosion chambers is provided with on this framework, and insulating frame can play insulating effect, is favorable to improving the insulating properties of three explosion chambers, and insulating barrier can increase the creepage distance between the three explosion chambers, and interphase insulating properties is better. Therefore, the environment-friendly vacuum circuit breaker has the advantages of simple structure, compact structure, stable and reliable performance and convenient assembly.

Particularly, wiring copper bars electrically connected with the three arc-extinguishing chambers are respectively arranged on the insulating plates, and insulating covers covering the wiring copper bars are arranged on the insulating plates. The insulating cover can avoid exposing the contact copper bars outside the insulating plate, and is beneficial to improving the insulating performance.

Particularly, three insulating locating plates are arranged between the two insulating plates corresponding to the three arc-extinguishing chambers, locating holes are formed in the insulating locating plates, the locating holes are sleeved on the arc-extinguishing chambers, and the insulating locating plates are matched with the arc-extinguishing chambers in a clamping way. An insulating positioning plate clamped with the three arc-extinguishing chambers is arranged between the two insulating plates, so that the three arc-extinguishing chambers and the insulating frame can be more compactly connected.

Specifically, the two ends of three insulating locating plates are respectively provided with a clamping block, two insulating plates are respectively provided with clamping holes matched with the clamping blocks, the clamping blocks are clamped in the clamping holes, and the three insulating locating plates are matched with the clamping holes of the two insulating plates in a clamping mode. The three insulating locating plates are connected with the two insulating plates in a clamping fit mode, so that the three insulating locating plates and the two insulating plates are convenient to assemble, the assembly is more convenient, and the assembly efficiency of the environment-friendly vacuum circuit breaker is improved.

Particularly, the both sides of four insulating barrier on be provided with the constant head tank respectively, the inner wall of two insulation boards on be provided with constant head tank matched with location sand grip respectively, location sand grip block in the constant head tank, and constitute four insulating barrier and the joint cooperation of two insulation boards. The four insulating clapboards are connected with the two insulating boards in a clamping fit mode, so that the four insulating clapboards and the two insulating boards are convenient to assemble, and the assembly is more convenient.

Drawings

Fig. 1 is a perspective view of an embodiment of the present utility model.

Fig. 2 is an exploded view of an embodiment of the present utility model.

Fig. 3 is a perspective view of an insulating frame according to an embodiment of the present utility model.

Fig. 4 is a perspective view of an insulating plate according to an embodiment of the present utility model.

Fig. 5 is a perspective view of an insulating spacer according to an embodiment of the present utility model.

Fig. 6 is a perspective view of an insulation positioning plate according to an embodiment of the present utility model.

Detailed Description

As shown in fig. 1 to 6, the embodiment of the utility model is an environment-friendly vacuum circuit breaker, which comprises a machine frame 10, an isolating contact assembly 20 arranged in the machine frame 10, and a circuit breaker assembly 30 arranged on the machine frame 10, wherein the isolating contact assembly 20 comprises an isolating rotating shaft 21 rotatably arranged on the machine frame 10, three isolating movable contact blades 22 respectively arranged on the isolating rotating shaft 21, three upper isolating fixed contacts 23, three lower isolating fixed contacts 24 and three grounding contacts, the circuit breaker assembly 30 comprises three arc extinguishing chambers 31 respectively arranged on the three upper isolating fixed contacts 23, an insulating frame 32 covering the three arc extinguishing chambers 31, a main shaft 33 rotatably arranged on the insulating frame 32, and three cams 34 respectively arranged on the main shaft 33 in a linkage manner and used for driving the three arc extinguishing chambers 31 to perform switching on/off, the insulating frame 32 comprises two insulating plates 321 respectively arranged on the machine frame 10 corresponding to the two sides of the three arc extinguishing chambers 31, four insulating partition plates 322 respectively arranged between the two insulating plates 321, and two insulating plates 322 respectively arranged between the two insulating plates 322 and the two insulating plates 33 are sleeved on the two insulating plates 33 corresponding to the two insulating plates 322.

As shown in fig. 2 and 3, the insulating plate 321 is provided with wiring copper bars 35 electrically connected with the three arc extinguishing chambers 31, and the insulating plate 321 is provided with an insulating cover 36 covering the wiring copper bars 35. The insulating cover can avoid exposing the contact copper bars outside the insulating plate, and is beneficial to improving the insulating performance. Three insulating locating plates 37 are arranged between the two insulating plates 321 corresponding to the three arc-extinguishing chambers 31, locating holes 371 are formed in the insulating locating plates 37, the locating holes 371 are sleeved on the arc-extinguishing chambers 31, and the insulating locating plates 37 are matched with the arc-extinguishing chambers 31 in a clamping mode. An insulating positioning plate clamped with the three arc-extinguishing chambers is arranged between the two insulating plates, so that the three arc-extinguishing chambers and the insulating frame can be more compactly connected. The two ends of the three insulating positioning plates 37 are respectively provided with clamping blocks 372, the two insulating plates 321 are respectively provided with clamping holes 3211 matched with the clamping blocks 372, the clamping blocks 372 are clamped in the clamping holes 3211, and the three insulating positioning plates 37 are matched with the two insulating plates 321 in a clamping way. The three insulating locating plates are connected with the two insulating plates in a clamping fit mode, so that the three insulating locating plates and the two insulating plates are convenient to assemble, the assembly is more convenient, and the assembly efficiency of the environment-friendly vacuum circuit breaker is improved. Positioning grooves 3221 are respectively arranged on two sides of the four insulating partition plates 322, positioning convex strips 3212 matched with the positioning grooves 3221 are respectively arranged on the inner walls of the two insulating plates 321, and the positioning convex strips 3212 are clamped in the positioning grooves 3221 and form clamping fit of the four insulating partition plates 322 and the two insulating plates 321. The four insulating clapboards are connected with the two insulating boards in a clamping fit mode, so that the four insulating clapboards and the two insulating boards are convenient to assemble, and the assembly is more convenient.

The integrated modularization of circuit breaker subassembly sets up on the mechanism frame, can realize the modularization assembly of circuit breaker subassembly and mechanism frame, and the assembly is more convenient. The insulating frame of shroud on three explosion chambers is provided with on this framework, and insulating frame can play insulating effect, is favorable to improving the insulating properties of three explosion chambers, and insulating barrier can increase the creepage distance between the three explosion chambers, and interphase insulating properties is better. Therefore, the environment-friendly vacuum circuit breaker has the advantages of simple structure, compact structure, stable and reliable performance and convenient assembly.

Claims (5)

1. The utility model provides an environment-friendly vacuum circuit breaker, includes the mechanism frame, sets up the isolation contact subassembly in the mechanism frame, sets up the circuit breaker subassembly on the mechanism frame, the isolation contact subassembly including rotating the isolation pivot that sets up on the mechanism frame, set up respectively in isolating epaxial three isolation movable contact sword, three upper isolation stationary contact, three lower isolation stationary contact, three ground contact, its characterized in that: the circuit breaker subassembly include three explosion chamber, the shroud insulating frame on three explosion chamber on keeping apart the static contact on three respectively, rotate the main shaft that sets up on insulating frame, link respectively and set up on the main shaft and be used for driving three explosion chamber and carry out the three cam of divide-shut brake, insulating frame including correspond three explosion chamber both sides and set up respectively at two insulation boards on the framework, set up respectively four insulating barrier between two insulation boards, set up the fixed plate between two insulation boards, four insulating barrier and two insulation boards between be formed with the suit at the outdoor insulating chamber of three explosion chamber, the main shaft on correspond four insulating barrier's both sides department and be provided with the insulating spacer respectively.

2. The environmentally friendly vacuum interrupter of claim 1 wherein: the insulating board on be provided with the wiring copper bar that is connected with three explosion chamber electricity respectively, the insulating board on be provided with the insulating boot of shroud on the wiring copper bar.

3. The environment-friendly vacuum circuit breaker according to claim 1 or 2, wherein: three insulating locating plates are arranged between the two insulating plates corresponding to the three arc-extinguishing chambers, locating holes are formed in the insulating locating plates, the locating holes are sleeved on the arc-extinguishing chambers, and the insulating locating plates are matched with the arc-extinguishing chambers in a clamping mode.

4. An environmentally friendly vacuum interrupter according to claim 3, wherein: the two ends of the three insulating positioning plates are respectively provided with a clamping block, the two insulating plates are respectively provided with clamping holes matched with the clamping blocks, the clamping blocks are clamped in the clamping holes, and the three insulating positioning plates are matched with the two insulating plates in a clamping way.

5. The environment-friendly vacuum circuit breaker according to claim 1 or 2, wherein: the two sides of the four insulating partition boards are respectively provided with positioning grooves, the inner walls of the two insulating board are respectively provided with positioning convex strips matched with the positioning grooves, the positioning convex strips are clamped in the positioning grooves, and the four insulating partition boards are matched with the two insulating boards in a clamping way.