CN213093130U

CN213093130U - Vacuum circuit breaker

Info

Publication number: CN213093130U
Application number: CN202022541505.2U
Authority: CN
Inventors: 赵浩; 陈拉克
Original assignee: Mingyang Power Transmission And Transformation Equipment Co ltd
Current assignee: Mingyang Power Transmission And Transformation Equipment Co ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-04-30
Anticipated expiration: 2030-11-06

Abstract

The utility model discloses a vacuum circuit breaker relates to the circuit breaker field, including the vacuum storehouse, slidable mounting has sealing piston in the vacuum storehouse, one side fixed mounting of sealing piston has last contact, a plurality of connection contacts of fixedly connected with are a plurality of on the bottom side inner wall in vacuum storehouse the one end fixed mounting who connects the contact has same lower contact, the first wiring end of one end fixedly connected with in vacuum storehouse, sealing piston's opposite side fixed mounting has the second wiring end, the atress dish has been cup jointed to the second wiring end is last fixed. The utility model discloses rational in infrastructure, the circuit breaker structure is small and exquisite, and the in-process of divide-shut brake has improved the contact effect through the contact of last contact and lower contact, prevents that contact failure from taking place the phenomenon of opening circuit, simultaneously through the formal design of piston, under the effect of vacuum when the contact, provides suction through vacuum and atmospheric pressure difference and can effectual assurance combined floodgate state, and the mechanism is ingenious, and the practicality is strong.

Description

Vacuum circuit breaker

Technical Field

The utility model relates to a circuit breaker field, in particular to 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 high vacuum, has the advantages of small volume, light weight, suitability for frequent operation and no need of maintenance for arc extinguishing, is relatively popularized in power distribution networks, can be used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants and transformer substations, is particularly suitable for use places requiring no oil, less maintenance and frequent operation, and can be arranged in a middle cabinet, a double-layer cabinet and a fixed cabinet to be used for controlling and protecting high-voltage electrical equipment.

The structural performance of separating brake mechanism directly influences vacuum circuit breaker's quality and life, and among the prior art, separating brake mechanism has the problem: the opening command can not be stably kept, and because the duration of the opening command is short and the operating force of the operating mechanism is only provided in a short time in the opening process, a part for keeping the opening is necessary in the operating mechanism to ensure that the breaker is still kept at the opening position after the opening command and the operating force disappear, and the safety of the breaker is ensured.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vacuum circuit breaker to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a vacuum circuit breaker, includes the vacuum storehouse, slidable mounting has sealed piston in the vacuum storehouse, one side fixed mounting of sealed piston has last contact, a plurality of connection contacts of fixedly connected with are a plurality of on the bottom side inner wall in vacuum storehouse the one end fixed mounting of connection contact has same lower contact, the first wiring end of one end fixedly connected with in vacuum storehouse, the opposite side fixed mounting of sealed piston has the second wiring end, the stress dish has been cup jointed to the second wiring end is last fixed, one side fixed mounting of stress dish has four ejector pins, and the same ejector pin of one side fixedly connected with that per two ejector pins are close to each other, square through hole, two have all been seted up to the both sides in vacuum storehouse equal slidable mounting has the stopper in the square through hole, two the cell type through-hole has all been seted up to one side of stopper.

Preferably, the two ejector rods respectively penetrate through the two groove-shaped through holes.

Preferably, four ejector rods are movably sleeved with the same first lantern ring, and one side of the first lantern ring is fixedly connected with a plurality of connecting rods.

Preferably, one end of each of the connecting rods is fixedly connected with the same second sleeve ring, and the second sleeve rings are sleeved on the outer sides of the two limiting blocks.

Preferably, two lifting rings are fixedly mounted on one side of the first lantern ring.

Preferably, the vacuum chamber has a vacuum environment inside.

Preferably, the two limit blocks are symmetrical about the center of the vacuum bin.

The utility model discloses a technological effect and advantage:

1. the utility model discloses rational in infrastructure, the circuit breaker structure is small and exquisite, and in the process of divide-shut brake, through the contact improvement contact effect of upper contact and lower contact, the phenomenon of preventing that contact failure from taking place to break off, simultaneously through the formal design of piston, when contacting under the effect of vacuum, provide suction through vacuum and atmospheric pressure difference and can effectually guarantee the combined floodgate state, the mechanism is ingenious, and the practicality is strong;

2. utilize the design of ejector pin, when the separating brake, the ejector pin rebound, and the upper and lower degree of freedom of stopper is restricted, therefore the stopper is close to being close to the circuit breaker center to the horizontal bar is in the vacuum chamber, and the restriction sealing piston removes, carries out machinery simultaneously through the second ring cover spacing to sum up, keep closing a floodgate through the atmospheric pressure difference, keep separating brake through mechanical structure, the structure is ingenious, is fit for most occasions and carries out the circuit breaker of installing.

Drawings

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

fig. 2 is a schematic perspective view of another perspective of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

fig. 4 is a schematic side view of the present invention.

In the figure: 1. a vacuum bin; 2. a sealing piston; 3. an upper contact; 4. a connection contact; 5. a lower contact piece; 6. a first terminal; 7. a second terminal; 8. a force-bearing plate; 9. a top rod; 10. a top bar; 11. a limiting block; 12. a slotted via; 13. a connecting rod; 14. a first collar; 15. a second collar; 16. and (6) lifting the ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only 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 work belong to the protection scope of the present invention.

The utility model provides a vacuum circuit breaker as shown in figures 1-4, which comprises a vacuum chamber 1, a sealing piston 2 is arranged in the vacuum chamber 1 in a sliding way, an upper contact 3 is fixedly arranged on one side of the sealing piston 2, a plurality of connecting contacts 4 are fixedly connected on the inner wall of the bottom side of the vacuum chamber 1, one end of the connecting contacts 4 is fixedly provided with a same lower contact piece 5, one end of the vacuum chamber 1 is fixedly connected with a first wiring end 6, the other side of the sealing piston 2 is fixedly provided with a second wiring end 7, a stress disc 8 is fixedly sleeved on the second wiring end 7, four ejector rods 9 are fixedly arranged on one side of the stress disc 8, one side of every two ejector rods 9 which are close to each other is fixedly connected with a same ejector rod 10, square through holes are respectively arranged on both sides of the vacuum chamber 1, and a limiting block 11 is respectively arranged in the two square through holes in a sliding way, two cell type through-hole 12 has all been seted up to stopper 11 one side, has improved the contact effect through the contact of last contact 3 with lower contact 5, prevent that contact failure from taking place the phenomenon of opening circuit, simultaneously through the formal design of piston, under the effect of vacuum when the contact, the atmospheric pressure difference through vacuum and atmospheric pressure provides suction can effectual assurance combined floodgate state, when the separating brake, ejector pin 10 upwards moves, and stopper 11 upper and lower degree of freedom is restricted, consequently stopper 11 is close to being close to the circuit breaker center, thereby the horizontal bar is in the vacuum chamber, restriction sealing piston 2 removes.

Further, in the above scheme, the two ejecting rods 10 respectively penetrate through the two groove-shaped through holes 12, and the function of driving the limiting block 11 to move is realized through the design of the groove-shaped through holes 12.

Further, in the above scheme, four ejector pins 9 are movably sleeved with the same first lantern ring 14, one side of the first lantern ring 14 is fixedly connected with a plurality of connecting rods 13, the transmission of mechanical energy is realized through the design of the ejector pins 9, and the function of convenient operation is realized through the design of the first lantern ring 14.

Further, in the above scheme, a plurality of one end of the connecting rod 13 is fixedly connected with the same second collar 15, the second collar 15 is sleeved on the outer sides of the two limiting blocks 11, and the function of limiting blocking is realized through the design of the limiting blocks 11.

Further, in the above scheme, two lifting rings 16 are fixedly installed on one side of the first sleeve ring 14, when the switch needs to be switched on, and the second sleeve ring 15 is not needed to be limited, at this time, the lifting ring 16 is pulled upwards, the first sleeve ring 14 is driven to move through the lifting ring 16, the connecting rod 13 is driven to move through the first sleeve ring 14, the second sleeve ring 15 is driven to move upwards through the connecting rod 13, and the limiting block 11 is further driven to move outwards.

Further, in the above scheme, the vacuum chamber 1 is internally provided with a vacuum environment, and the vacuum chamber 1 is designed to support the vacuum environment.

Further, in the above scheme, the two limiting blocks 11 are centrosymmetric with respect to the vacuum chamber 1, and by the design of the limiting blocks 11, a limiting function after opening is achieved, and closing under the action of power is prevented.

This practical theory of operation: this circuit breaker structure is small and exquisite, the in-process of divide-shut brake, the contact effect has been improved through the contact of last contact 3 and lower contact 5, the phenomenon of the open circuit takes place for preventing contact failure, simultaneously through the formal design of piston, under the effect of vacuum when the contact, the atmospheric pressure difference through vacuum and atmospheric pressure provides suction can effectual assurance combined floodgate state, when the separating brake, ejector pin 10 moves upwards, and stopper 11 upper and lower degree of freedom is restricted, consequently stopper 11 is close to being close to the circuit breaker center, thereby the horizontal bar is in the vacuum chamber, restriction sealing piston 2 removes, it is spacing to carry out machinery through second ring cover 15 simultaneously, to sum up, keep closing through the atmospheric pressure difference, keep separating brake through mechanical structure, the mechanism is ingenious, and the practicality is strong.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A vacuum interrupter, comprising a vacuum chamber (1), characterized in that: the vacuum chamber is characterized in that a sealing piston (2) is arranged in the vacuum chamber (1) in a sliding manner, an upper contact (3) is fixedly arranged on one side of the sealing piston (2), a plurality of connecting contacts (4) are fixedly connected to the inner wall of the bottom side of the vacuum chamber (1), one end of each connecting contact (4) is fixedly provided with a same lower contact piece (5), one end of the vacuum chamber (1) is fixedly connected with a first wiring end (6), the other side of the sealing piston (2) is fixedly provided with a second wiring end (7), the second wiring end (7) is fixedly sleeved with a stress disc (8), one side of the stress disc (8) is fixedly provided with four ejector rods (9), one side of each two ejector rods (9) close to each other is fixedly connected with a same ejector rod (10), square through holes are formed in both sides of the vacuum chamber (1), and a limiting block (11) is arranged in each square through hole in a, and one side of each limiting block (11) is provided with a groove-shaped through hole (12).

2. A vacuum interrupter as claimed in claim 1, characterized in that: the two ejector rods (10) penetrate through the two groove-shaped through holes (12) respectively.

3. A vacuum interrupter as claimed in claim 1, characterized in that: four ejector pins (9) are movably sleeved with the same first lantern ring (14), and one side of the first lantern ring (14) is fixedly connected with a plurality of connecting rods (13).

4. A vacuum interrupter as claimed in claim 3, characterized in that: a plurality of one end fixedly connected with of connecting rod (13) is the same second lantern ring (15), second lantern ring (15) cup joints two the outside of stopper (11).

5. A vacuum interrupter as claimed in claim 3, characterized in that: two lifting rings (16) are fixedly arranged on one side of the first lantern ring (14).

6. A vacuum interrupter as claimed in claim 1, characterized in that: the vacuum chamber (1) is internally provided with a vacuum environment.

7. A vacuum interrupter as claimed in claim 1, characterized in that: the two limiting blocks (11) are centrosymmetric about the vacuum bin (1).