CN214797242U

CN214797242U - Safe sealing vacuum circuit breaker

Info

Publication number: CN214797242U
Application number: CN202120749635.7U
Authority: CN
Inventors: 张强; 张天喜; 张建平
Original assignee: Jiangsu Bruno Technology Co ltd
Current assignee: Jiangsu Bruno Technology Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-11-19
Anticipated expiration: 2031-04-13

Abstract

The utility model relates to a vacuum circuit breaker technical field discloses a safe leakproofness vacuum circuit breaker, including the vacuum circuit breaker body, a plurality of vacuum interrupter of vacuum circuit breaker body top fixedly connected with, vacuum interrupter still includes insulating casing, the quiet end cover board of insulating casing top fixedly connected with, the equal swing joint of sealed fixture block left and right sides outer wall has rotatory piece, the inside equal swing joint of sealed fixture block left and right sides has bracing piece and fixture block, fixedly connected with coupling spring between fixture block and the sealed fixture block inner wall. The utility model discloses in, when needs carry out the operation of opening a circuit, rotatory piece makes rotatory piece drive the bracing piece rotatory, makes bracing piece and water flat line be the vertical state, and the fixture block is owing to lose the resistance of bracing piece, accomplishes the operation of opening a circuit, owing to lose the card of fixture block, makes the bellows disappear at the in-process outer wall friction that opens and shuts, has improved the life of both bellows, has improved the sealed effect of vacuum circuit breaker body again.

Description

Safe sealing vacuum circuit breaker

Technical Field

The utility model belongs to the technical field of vacuum circuit breaker, specifically be a safety seal nature vacuum circuit breaker.

Background

The vacuum circuit breaker is named because arc extinguishing media and insulating media of contact gaps after arc extinguishing are high vacuum; the vacuum circuit breaker is an indoor power distribution device in a 3-10kV and 50Hz three-phase alternating current system, can be used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants and transformer substations, and is particularly suitable for use places requiring no oil, less maintenance and frequent operation;

in the use process of the vacuum circuit breaker in the prior art, the wave-shaped thin wall of the corrugated pipe and the inner wall of the insulating shell generate friction when the switch is closed and opened every time, the corrugated pipe is easily damaged due to fatigue along with the increase of the friction times, and finally the arc extinguish chamber is scrapped due to air leakage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems that in the use process of a vacuum circuit breaker in the prior art, a corrugated thin wall of a corrugated pipe and the inner wall of an insulating shell generate friction when a switch is closed and opened every time, the corrugated pipe is easily damaged due to fatigue along with the increase of the friction times, and finally an arc extinguish chamber is leaked and scrapped, the safe and sealed vacuum circuit breaker cloth is provided.

The utility model adopts the technical scheme as follows: a vacuum circuit breaker with safe sealing performance comprises a vacuum circuit breaker body, wherein a plurality of vacuum arc extinguish chambers are fixedly connected to the top of the vacuum circuit breaker body, the vacuum arc extinguish chambers further comprise an insulating shell, a static end cover plate is fixedly connected to the top of the insulating shell, a movable end cover plate is fixedly connected to the bottom of the insulating shell, a shielding barrel is fixedly connected to the inner wall of the middle part of the insulating shell, a static conductive rod is fixedly connected to the middle part of the static end cover plate, a static contact seat is fixedly connected to the bottom of the static conductive rod, a static contact is fixedly connected to the bottom of the static contact seat, a movable conductive rod is movably connected to the middle part of the movable end cover plate, a corrugated pipe is fixedly connected to the outer wall of the movable conductive rod, a movable contact seat is fixedly connected to the top of the corrugated pipe, a movable contact is fixedly connected to the top of the movable contact seat, a sealing fixture block is fixedly connected to the inner wall of the lower end of the insulating shell, the rotary clamping fixture is characterized in that the outer walls of the left side and the right side of the sealing clamping block are movably connected with rotary blocks, the inner parts of the left side and the right side of the sealing clamping block are movably connected with supporting rods and clamping blocks, and connecting springs are fixedly connected between the clamping blocks and the inner walls of the sealing clamping blocks.

In a preferred embodiment, the bellows is movably connected to the top of the middle end of the sealing fixture block.

In a preferred embodiment, a power mechanism is disposed inside the vacuum circuit breaker body, and the power mechanism is fixedly connected to the movable conducting rod.

In a preferred embodiment, the bottom of the rotating block is fixedly connected with the support rod.

In a preferred embodiment, the outer wall of the clamping block is provided with a plurality of clamping teeth, and the outer wall of the sealing clamping block is provided with a plurality of notches matched with the clamping teeth.

In a preferred embodiment, the insulating housing is an oxidation oven ceramic envelope.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model discloses in, when needs carry out the operation of opening circuit, rotatory piece, it is rotatory to make rotatory piece drive the bracing piece, it is the vertical state to make bracing piece and water flat line, the fixture block is owing to lose the resistance of bracing piece, through connecting spring release elastic potential energy, make the fixture block outwards remove, make the fixture block shift out from bellows outer wall ripple groove, press the button that vacuum circuit breaker body front side set up, make power mechanism drive the movable conducting rod and move down, it is flexible that the movable conducting rod drives the bellows, make movable contact and static contact separation, accomplish the operation of opening circuit, owing to lose the card of fixture block, make the bellows disappear at the outer wall friction of the in-process of opening and shutting, the life of both bellows has been improved, the sealed effect of vacuum circuit breaker body has been improved again.

Drawings

Fig. 1 is a schematic diagram of a structure of a safety sealing vacuum circuit breaker according to the present invention;

fig. 2 is a cross-sectional view of a vacuum interrupter in a safety and sealing vacuum circuit breaker according to the present invention;

fig. 3 is the utility model relates to a seal fixture block's among safe leakproofness vacuum circuit breaker structural schematic.

The labels in the figure are: the vacuum circuit breaker comprises a vacuum circuit breaker body, a vacuum arc extinguish chamber 2, an insulating shell 3, a static end cover plate 4, a dynamic end cover plate 5, a static conductive rod 6, a static contact seat 7, a static contact 8, a dynamic conductive rod 9, a sealing fixture block 10, a rotating block 11, a corrugated pipe 12, a dynamic contact seat 13, a dynamic contact 14, a shielding cylinder 15, a supporting rod 16, a fixture block 17 and a connecting spring 18.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, a safe and hermetic vacuum circuit breaker comprises a vacuum circuit breaker body 1, wherein the top of the vacuum circuit breaker body 1 is fixedly connected with a plurality of vacuum arc-extinguishing chambers 2, the vacuum arc-extinguishing chambers 2 further comprise an insulating shell 3, the insulating shell 3 is an oxidation furnace ceramic tube shell, and has a series of advantages of excellent electrical insulating property, high mechanical strength, difficult decomposition and evaporation at high temperature, and the like, namely, the vacuum arc-extinguishing chambers are guaranteed to be airtight and difficult to damage in the production and operation processes, the top of the insulating shell 3 is fixedly connected with a static end cover plate 4, the bottom of the insulating shell 3 is fixedly connected with a movable end cover plate 5, the inner wall of the middle part of the insulating shell 3 is fixedly connected with a shielding cylinder 15, the middle part of the static end cover plate 4 is fixedly connected with a static conductive rod 6, the bottom of the static conductive rod 6 is fixedly connected with a static contact base 7, and the bottom of the static contact base 7 is fixedly connected with a static contact 8, the middle part of the movable end cover plate 5 is movably connected with a movable conducting rod 9, a power mechanism is arranged in the vacuum circuit breaker body 1 and fixedly connected with the movable conducting rod 9, the outer wall of the movable conducting rod 9 is fixedly connected with a corrugated pipe 12, the top part of the corrugated pipe 12 is fixedly connected with a movable contact seat 13, the top part of the movable contact seat 13 is fixedly connected with a movable contact 14, the inner wall of the lower end of the insulating shell 3 is fixedly connected with a sealing fixture block 10, the corrugated pipe 12 is movably connected with the top part of the middle end of the sealing fixture block 10, the outer walls of the left side and the right side of the sealing fixture block 10 are movably connected with a rotating block 11, the inner parts of the left side and the right side of the sealing fixture block 10 are movably connected with a support rod 16 and a fixture block 17, the outer wall of the fixture block 17 is provided with a plurality of clamping teeth, the outer wall of the sealing fixture block 10 is provided with a plurality of notches matched with the clamping teeth, the bottom part of the rotating block 11 is fixedly connected with the support rod 16, and a connecting spring 18 is fixedly connected between the fixture block 17 and the inner wall of the sealing fixture block 10, when the circuit breaking operation is required, the rotating block 11 is rotated, the rotating block 11 drives the supporting rod 16 to rotate, the supporting rod 16 is perpendicular to the horizontal line, the fixture block 17 releases elastic potential energy through the connecting spring 18 due to loss of resistance of the supporting rod 16, the fixture block 17 moves outwards, the fixture block 17 moves out of a corrugated groove in the outer wall of the corrugated pipe 12, a button arranged on the front side of the vacuum circuit breaker body 1 is pressed, the power mechanism drives the movable conductive rod 9 to move downwards, the movable conductive rod 9 drives the corrugated pipe 12 to stretch and retract, the movable contact 14 is separated from the static contact 8, the circuit breaking operation is completed, due to loss of clamping of the fixture block 17, outer wall friction of the corrugated pipe 12 in the opening and closing process disappears, the service life of the corrugated pipe 12 is prolonged, and the sealing effect of the vacuum circuit breaker body 1 is improved.

The working principle is as follows: when the circuit breaking operation is required, the rotating block 11 is rotated, the rotating block 11 drives the supporting rod 16 to rotate, the supporting rod 16 is perpendicular to the horizontal line, the fixture block 17 releases elastic potential energy through the connecting spring 18 due to loss of resistance of the supporting rod 16, the fixture block 17 moves outwards, the fixture block 17 moves out of a corrugated groove in the outer wall of the corrugated pipe 12, a button arranged on the front side of the vacuum circuit breaker body 1 is pressed, the power mechanism drives the movable conductive rod 9 to move downwards, the movable conductive rod 9 drives the corrugated pipe 12 to stretch and retract, the movable contact 14 is separated from the static contact 8, the circuit breaking operation is completed, due to loss of clamping of the fixture block 17, outer wall friction of the corrugated pipe 12 in the opening and closing process disappears, the service life of the corrugated pipe 12 is prolonged, and the sealing effect of the vacuum circuit breaker body 1 is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A safety sealed vacuum circuit breaker, comprising a vacuum circuit breaker body (1), characterized in that: the vacuum circuit breaker comprises a vacuum circuit breaker body (1), wherein the top of the vacuum circuit breaker body (1) is fixedly connected with a plurality of vacuum arc-extinguishing chambers (2), each vacuum arc-extinguishing chamber (2) further comprises an insulating shell (3), the top of each insulating shell (3) is fixedly connected with a static end cover plate (4), the bottom of each insulating shell (3) is fixedly connected with a dynamic end cover plate (5), the middle inner wall of each insulating shell (3) is fixedly connected with a shielding cylinder (15), the middle of each static end cover plate (4) is fixedly connected with a static conductive rod (6), the bottom of each static conductive rod (6) is fixedly connected with a static contact seat (7), the bottom of each static contact seat (7) is fixedly connected with a static contact (8), the middle of each dynamic end cover plate (5) is movably connected with a dynamic conductive rod (9), the outer wall of each dynamic conductive rod (9) is fixedly connected with a corrugated pipe (12), and the top of each corrugated pipe (12) is fixedly connected with a dynamic contact seat (13), the movable contact is fixedly connected to the top of the movable contact seat (13), a sealing clamping block (10) is fixedly connected to the inner wall of the lower end of the insulating shell (3), rotating blocks (11) are movably connected to the outer walls of the left side and the right side of the sealing clamping block (10), a supporting rod (16) and a clamping block (17) are movably connected to the inner portions of the left side and the right side of the sealing clamping block (10), and a connecting spring (18) is fixedly connected between the clamping block (17) and the inner wall of the sealing clamping block (10).

2. A safety sealed vacuum interrupter as claimed in claim 1, wherein: the corrugated pipe (12) is movably connected to the top of the middle end of the sealing clamping block (10).

3. A safety sealed vacuum interrupter as claimed in claim 1, wherein: a power mechanism is arranged inside the vacuum circuit breaker body (1), and the power mechanism is fixedly connected with the movable conducting rod (9).

4. A safety sealed vacuum interrupter as claimed in claim 1, wherein: the bottom of the rotating block (11) is fixedly connected with the supporting rod (16).

5. A safety sealed vacuum interrupter as claimed in claim 1, wherein: the outer wall of the clamping block (17) is provided with a plurality of clamping teeth, and the outer wall of the sealing clamping block (10) is provided with a plurality of notches matched with the clamping teeth.

6. A safety sealed vacuum interrupter as claimed in claim 1, wherein: the insulating shell (3) is a ceramic tube shell of the oxidation furnace.