CN219642733U

CN219642733U - Vacuum circuit breaker

Info

Publication number: CN219642733U
Application number: CN202320652437.8U
Authority: CN
Inventors: 宋红育; 王永和; 王亚; 杜传伟; 刘镇
Original assignee: Zhejiang Palladium Platinum Lithium Electric Co ltd
Current assignee: Zhejiang Palladium Platinum Lithium Electric Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-09-05
Anticipated expiration: 2033-03-29

Abstract

The utility model discloses a vacuum circuit breaker, which comprises a shell, a solid-sealed polar pole arranged at the top of the shell and a vacuum arc-extinguishing chamber arranged in the solid-sealed polar pole, wherein a heat-conducting tube is fixedly arranged on the inner wall of the solid-sealed polar pole, a heat-radiating fin is arranged on the outer side of the heat-conducting tube, one side of the heat-radiating fin extends to the outer side of the solid-sealed polar pole, a static conductive rod is arranged at the top of the vacuum arc-extinguishing chamber, an upper wire outlet seat connected with the static conductive rod is arranged at the top of the solid-sealed polar pole, a conical groove and a slot are sequentially arranged at the top of the static conductive rod from top to bottom, the slot is communicated with the conical groove, a conical block matched with the conical groove is arranged at the bottom of the upper wire outlet seat, and a plug rod matched with the slot is integrally formed at the bottom of the conical block.

Description

Vacuum circuit breaker

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a vacuum circuit breaker.

Background

The vacuum circuit breaker is a power distribution device for switching on and off load current, overload current and short-circuit current of a power distribution network, and mainly comprises three parts: in order to avoid adverse effects of the vacuum arc-extinguishing chamber caused by external dust, moisture and the like, the vacuum arc-extinguishing chamber and related conductive parts of the vacuum circuit breaker are generally encapsulated by solid insulating materials such as epoxy resin and the like to form a solid-sealed pole.

The solid sealed polar pole of the existing vacuum circuit breaker is poor in heat conducting performance, the vacuum arc-extinguishing chamber is sealed inside, heat generated by the vacuum arc-extinguishing chamber is difficult to be emitted through the solid sealed polar pole, and the temperature is increased, so that the service lives of the solid sealed polar pole and other parts inside the solid sealed polar pole are influenced.

Disclosure of Invention

The present utility model is directed to a vacuum circuit breaker to solve the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a vacuum circuit breaker, includes the casing, adorns in the solid utmost point post of casing top and adorns in the inside vacuum interrupter of solid utmost point post that seals, the inner wall fixed mounting of solid utmost point post has a heat conduction section of thick bamboo, the outside of heat conduction section of thick bamboo is equipped with heat radiation fins, heat radiation fins's one side extends to the outside of solid utmost point post, quiet conducting rod is installed at the top of vacuum interrupter, the top of solid utmost point post that seals is equipped with the last seat of being connected with quiet conducting rod, the top from the top down of quiet conducting rod is equipped with taper groove and slot in proper order, just slot and taper groove intercommunication, go up the bottom of the seat of being qualified for next round of competitions be equipped with taper groove matched with toper piece, the bottom integrated into one piece of toper piece has the inserted bar with slot matched with.

As a preferable scheme of the utility model, insulating silicone grease is arranged between the heat conduction cylinder and the vacuum arc-extinguishing chamber.

As a preferable scheme of the utility model, vent holes distributed in a ring shape are arranged on the outer side of the solid-sealed polar pole, and the vent holes are obliquely arranged.

As a preferable scheme of the utility model, a movable conducting rod is arranged at the bottom of the vacuum arc extinguishing chamber, a lower wire outlet seat is arranged at the outer side of the solid-sealed polar pole, and a conducting reed is arranged between the lower wire outlet seat and the movable conducting rod.

As a preferable scheme of the utility model, an insulating pull rod is arranged in the solid-sealed polar pole, and the top of the insulating pull rod is connected with the bottom of the movable conducting rod.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, heat of the vacuum arc-extinguishing chamber can be radiated through the insulating silicone grease, the heat-conducting tube and the radiating fins, so that the problem that the heat in the solid-sealed polar pole is difficult to radiate, the temperature is increased, the service life of the internal parts of the solid-sealed polar pole is influenced, and meanwhile, the contact area between the upper wire outlet seat and the static conductive rod can be increased through the conical block, the conical groove, the inserted rod and the slot, the resistance is reduced, and the heating value is reduced.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a partial left side cross-sectional view of the present utility model;

FIG. 3 is an enlarged view of the utility model at A in FIG. 2;

fig. 4 is an enlarged view of the present utility model at B in fig. 2.

In the figure: 1. a housing; 2. sealing the polar post; 3. an upper wire outlet seat; 4. a lower outlet seat; 5. a heat radiation fin; 6. a vacuum arc extinguishing chamber; 7. a movable conductive rod; 8. a slot; 9. an insulating pull rod; 10. a conductive reed; 11. insulating silicone grease; 12. a heat conduction tube; 13. a vent hole; 14. a static conductive rod; 15. a conical block; 16. a conical groove; 17. and a plunger.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, the present utility model provides a technical solution: the utility model provides a vacuum circuit breaker, including casing 1, install in the solid utmost point post 2 of casing 1 top, and install in the inside vacuum interrupter 6 of solid utmost point post 2, the inner wall fixed mounting of solid utmost point post 2 has heat conduction tube 12, the heat of the partial heat that vacuum interrupter 6 produced can be conducted for heat conduction tube 12, heat conduction tube 12 is conducted heat for radiator fin 5, in radiator fin 5 heat gives off the external environment fast, and then realize the heat dissipation to vacuum interrupter 6, prevent the accumulation of heat in solid utmost point post 2, lead to the temperature to rise, influence the life of solid utmost point post 2 internals, the outside of heat conduction tube 12 is equipped with radiator fin 5, one side of radiator fin 5 extends to the outside of solid utmost point post 2, the quiet conducting rod 14 is installed at the top of vacuum interrupter 6, the top of solid utmost point post 2 is equipped with the last wire seat 3 that is connected with quiet conducting rod 14, the top of quiet conducting rod 14 is equipped with taper groove 16 and slot 8 down in proper order, and slot 8 and taper groove 16 intercommunication, the bottom of going up wire seat 3 is equipped with the taper piece 15 that cooperatees with taper piece 16, the taper piece 15 is equipped with the taper piece 15 that the taper piece is equipped with and the taper piece 15 is installed with the taper piece 15, the taper piece 17 is installed and the taper piece is contacted with the slot 17, the diameter of the bottom 17 is reduced, the area is reduced with the plug 17 and the plug 17 is formed with the slot 17, the diameter is reduced, and the contact area is arranged between the plug 17 and the slot is formed with the plug.

Wherein, be equipped with insulating silicone grease 11 between heat conduction tube 12 and the vacuum interrupter 6, insulating silicone grease 11 has high thermal conductivity, can fill the gap between heat conduction tube 12 and the vacuum interrupter 6 to improve heat transfer rate, the heat conduction of the vacuum interrupter 6 of being convenient for gives heat conduction tube 12, and its insulating properties is high moreover.

The outside of the solid sealed polar pole 2 is provided with vent holes 13 distributed in a ring shape, the vent holes 13 can facilitate circulation of air around the heat radiation fins 5, and take away heat on the heat radiation fins 5, so that the heat radiation capacity of the heat radiation fins 5 is improved, and the vent holes 13 are obliquely arranged.

The bottom of the vacuum arc-extinguishing chamber 6 is provided with a movable conducting rod 7, the outer side of the solid-sealed pole 2 is provided with a lower wire outlet seat 4, a conducting reed 10 is arranged between the lower wire outlet seat 4 and the movable conducting rod 7, and the conducting reed 10 is used for conducting electricity between the movable conducting rod 7 and the lower wire outlet seat 4.

Wherein, the inside of the solid sealed pole 2 is provided with an insulating pull rod 9, the insulating pull rod 9 is used for driving the movable conducting rod 7 to act, and the top of the insulating pull rod 9 is connected with the bottom of the movable conducting rod 7.

Specifically, when in use, heat generated by the operation of the vacuum arc-extinguishing chamber 6 is conducted to the heat-conducting tube 12 through the insulating silicone grease 11, the heat-conducting tube 12 conducts the heat to the heat-radiating fins 5, the heat-radiating fins 5 radiate the heat to the external environment, the internal heat radiation of the solid-sealed polar pole 2 is realized, the internal temperature of the solid-sealed polar pole 2 is prevented from being too high, meanwhile, the ventilation holes 13 can facilitate the circulation of air around the heat-radiating fins 5, and the heat radiation capacity of the heat-radiating fins 5 is improved.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vacuum circuit breaker, includes casing (1), adorns in solid utmost point post (2) of casing (1) top to and adorn in solid vacuum interrupter (6) of sealing utmost point post (2) inside, its characterized in that: the inner wall fixed mounting of solid sealed utmost point post (2) has heat conduction section of thick bamboo (12), the outside of heat conduction section of thick bamboo (12) is equipped with heat radiation fins (5), one side of heat radiation fins (5) extends to the outside of solid sealed utmost point post (2), quiet conducting rod (14) are installed at the top of vacuum interrupter (6), the top of solid sealed utmost point post (2) is equipped with last outlet seat (3) that are connected with quiet conducting rod (14), the top from the top down of quiet conducting rod (14) is equipped with taper groove (16) and slot (8) in proper order, just slot (8) communicate with taper groove (16), the bottom of going up outlet seat (3) is equipped with and taper groove (16) matched with toper piece (15), the bottom integrated into one piece of toper piece (15) have with slot (8) matched with inserted bar (17).

2. The vacuum interrupter of claim 1, wherein: an insulating silicone grease (11) is arranged between the heat conduction tube (12) and the vacuum arc-extinguishing chamber (6).

3. The vacuum interrupter of claim 1, wherein: the outside of solid sealed utmost point post (2) is equipped with and is annular distribution ventilation hole (13), ventilation hole (13) are the slope setting.

4. The vacuum interrupter of claim 1, wherein: the bottom of the vacuum arc-extinguishing chamber (6) is provided with a movable conducting rod (7), the outer side of the solid-sealed polar pole (2) is provided with a lower wire outlet seat (4), and a conductive reed (10) is arranged between the lower wire outlet seat (4) and the movable conducting rod (7).

5. The vacuum interrupter of claim 4, wherein: the inside of the solid-sealed polar pole (2) is provided with an insulating pull rod (9), and the top of the insulating pull rod (9) is connected with the bottom of the movable conductive rod (7).