CN217933642U

CN217933642U - Circuit breaker with deionization device

Info

Publication number: CN217933642U
Application number: CN202221796679.6U
Authority: CN
Inventors: 徐翘楚; 谢心意; 瞿帅强
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-11-29
Anticipated expiration: 2032-07-11

Abstract

The utility model relates to a circuit breaker with a deionization device, which comprises a circuit breaker shell (1) and a deionization device (2), wherein the deionization device (2) is arranged outside the circuit breaker shell (1) and one end of the deionization device is communicated with an exhaust port (14); the method is characterized in that: the end part of the deionization device (2) communicated with the exhaust port (14) extends into the exhaust port (14), or the exhaust port (14) extends into the end part of the deionization device (2) communicated with the exhaust port (14); and a circle of gap (3) is arranged between the end part of the deionization device (2) communicated with the exhaust port (14) and the exhaust port (14), and a sealing ring (4) is arranged in the gap (3).

Description

Circuit breaker with deionization device

Technical Field

The utility model relates to a circuit breaker especially relates to a circuit breaker of free device disappears in area.

Background

As known in the art, in the breaking process of the circuit breaker, a large amount of high-temperature gas with metal particles is generated due to huge energy of an electric arc during breaking, and the high-temperature metal particles are exhausted to the outside of the circuit breaker through an exhaust port of an arc extinguish chamber; in order to avoid the situation, the existing scheme is provided with a dissociation eliminating device at the exhaust port to adsorb and cool the sprayed high-temperature gas, and the high-temperature metal particles in the high-temperature gas reach the outside after being removed, so that the insulation safety of the periphery of the busbar is ensured.

When the existing design works, under the condition of extremely large air pressure during breaking, the position connection part of the air outlet of the shell is easy to leak, high-temperature gas can be directly leaked to the outside, the effect of a deionization device is reduced to a great extent, and therefore the harm caused by the tiny gaps is eliminated by the aid of a structure which needs to be designed and optimized.

Disclosure of Invention

The utility model aims at providing a free circuit breaker of device disappears in area promotes the leakproofness of casing gas vent position junction so that gaseous full entering disappears free device, promotes the effect that disappears free device.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a circuit breaker with a deionization device comprises a circuit breaker shell and a deionization device, wherein a static contact, a moving contact and an arc extinguish chamber for extinguishing electric arc generated when the static contact is separated from the moving contact are arranged in the circuit breaker shell, one side of the arc extinguish chamber is provided with an exhaust port on the circuit breaker shell, and the deionization device is arranged on the outer side of the circuit breaker shell and one end of the deionization device is communicated with the exhaust port; the end part of the deionization device communicated with the exhaust port extends into the exhaust port, or the end part of the exhaust port extends into the deionization device communicated with the exhaust port; and a circle of gap is arranged between the end part of the deionization device communicated with the exhaust port and the exhaust port, and a sealing ring is arranged in the gap.

In the above scheme, a first groove around the circumference is arranged on the outer circumferential surface of the end part of the deionization device communicated with the exhaust port, and the inner edge of the sealing ring is clamped in the first groove.

Furthermore, be provided with the second recess on the gas vent inner wall, the outer fringe joint of sealing washer is in this second recess.

In the scheme, the end part of the dissociation eliminating device which is extended into the exhaust port and communicated with the exhaust port is in a horn-shaped opening.

In the above scheme, the sealing ring is a rubber sealing ring.

In the above scheme, the sealing ring is a silica gel sealing ring.

Compared with the prior art, the utility model have following advantage:

the utility model discloses a tip that will disappear free device probes into in the exhaust port or the exhaust port probes into in the tip that disappears free device to establish the sealing washer between the two, at the disconnected in-process of circuit breaker, divide disconnected produced gas to act on the sealing washer, the sealing washer is filled full gap by extrusion deformation, thereby plays better sealed effect, makes the explosion chamber casing and the sealed butt joint of free device that disappears, divides the disconnected in-process of circuit breaker can not spill high-temperature gas.

Drawings

FIG. 1 is a schematic structural sectional view of an embodiment of the present invention;

FIG. 2 is a schematic longitudinal sectional view of a joint between an exhaust port and a deionization apparatus according to an embodiment of the present invention;

fig. 3 is a schematic view of a connection between an exhaust port and a deionization apparatus according to a first embodiment of the present invention;

fig. 4 is a schematic view of a joint between the exhaust port and the deionization apparatus according to the second embodiment of the present invention.

In the above drawings: 1. a circuit breaker housing; 11. a moving contact; 12. carrying out static contact; 13. an arc extinguishing chamber; 14. an exhaust port; 141. a second groove; 2. a deionization device; 21. a horn-shaped opening; 22. a first groove; 3. a gap; 4. a seal ring; 5. a bus bar.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

the utility model provides a circuit breaker of free device that disappears, as shown in figure 1, including circuit breaker casing 1 and free device 2 that disappears, circuit breaker casing 1 inside be provided with moving contact 11, static contact 12, explosion chamber 13, moving contact 11 and static contact 12 produce electric arc when separating, realize extinguishing through explosion chamber 13, the circuit breaker is still including external connection female arranging 5, external connection female arranging 5's one end and static contact 12 link to each other, the other end links to each other with external circuit. One side of the arc extinguishing chamber 13 is connected to the outside through an exhaust port 14 provided on the circuit breaker case 1. In order to cool and adsorb the high-temperature metal particles coming out through the arc extinguish chamber 13, prevent that the metal particles from reducing the dielectric strength of the external connection busbar 5 to the outside of the circuit breaker shell 1 and causing the breakdown, the outside of the circuit breaker shell 1 is provided with the deionization device 2, one end of the deionization device 2 is communicated with the exhaust port 14, namely, the gas coming out of the arc extinguish chamber and having the high-temperature particles enters the deionization device 2 through the exhaust port 14 and then is discharged to the outside.

The end of the deionization unit 2 communicating with the exhaust port 14 may protrude into the exhaust port 14, or the end of the exhaust port 14 communicating with the deionization unit 2 may protrude into the exhaust port 14. The following embodiments take the case that the end of the deionization apparatus 2 communicating with the exhaust port 14 protrudes into the exhaust port 14.

The first embodiment is as follows: referring to the attached figures 1-3:

specifically, the deionization device 2 has an end portion communicated with the exhaust port 14 and extending into the exhaust port 14, and a gap 3 is formed between the end portion and the inner wall of the exhaust port 14, as shown in fig. 1, and a seal ring 4 is disposed in the gap 3. In the breaking process of the circuit breaker, the sealing ring 4 is deformed and filled in the gap 3 under the action of gas generated in breaking so as to increase the sealing property.

As shown in fig. 2, the exhaust port 14 is connected to the deionization apparatus 2, the sealing ring 4 is disposed at this position, and referring to fig. 2, the sealing ring 4 fills the space of the gap 3 by being pressed and deformed under the action of air pressure, so as to achieve a better sealing effect, and the high-temperature gas cannot leak out from the channel formed by the gap 3 between the arc extinguish chamber housing 1 and the deionization apparatus 2 during the breaking process of the circuit breaker.

As shown in fig. 3, in order to achieve a better filling effect, the deionization unit 2 is flared 21 towards the end of the gas outlet 14 (i.e., the end communicating with the gas outlet 14). In the breaking process, gas is sprayed out from the arc extinguish chamber shell 1 to the deionization chamber 2, the horn-shaped opening 21 expands outwards under the action of the rapidly sprayed gas, the sealing ring 4 is pressed tightly at the moment, the sealing ring is tightly contacted between the inner wall of the exhaust port 14 and the end part of the deionization device 2 facing the exhaust port 14 after elastic deformation, a gap 3 in the space is completely filled, a better sealing effect is achieved, and therefore high-temperature gas enters the deionization chamber 2 along the exhaust port 14 and the horn-shaped opening 21 to be adsorbed and cooled.

Example two: referring to fig. 1-2 and fig. 4:

the utility model provides a circuit breaker of free device that disappears, as shown in figure 1, including circuit breaker casing 1 and free device 2 that disappears, circuit breaker casing 1 inside be provided with moving contact 11, static contact 12, explosion chamber 13, moving contact 11 and static contact 12 produce electric arc when separating, realize extinguishing through explosion chamber 13, the circuit breaker is still including external connection female arranging 5, external connection female arranging 5's one end and static contact 12 link to each other, the other end links to each other with external circuit. The difference from the first embodiment is that:

the periphery of the end of the deionization device 2 facing the exhaust port 14 (i.e. the end communicating with the exhaust port 14) is provided with a circle of first groove 22, and the inner ring of the sealing ring 4 is clamped in the first groove 22. In the breaking process, gas is sprayed out from the breaker shell 1 to the deionization device 2 through the gas outlet 14, under the action of the rapidly sprayed gas, the sealing ring 4 is extruded in the first groove 22, the compressed sealing ring 4 is further elastically deformed to be in close contact with the end part of the deionization device 2 and the gas outlet 14, the gap 3 in the space is completely filled, the sealing effect can be achieved, and therefore high-temperature gas can completely enter the deionization chamber 2 along the gas outlet 14 to be adsorbed and cooled.

Furthermore, a second groove 141 is formed in the inner wall of the exhaust port 14, and the outer ring of the seal ring 4 is engaged with the second groove 141. In the breaking process, gas is sprayed out from the breaker shell 1 to the deionization device 2 through the exhaust port 14, under the action of the rapidly sprayed gas, the sealing ring 4 is extruded in the second groove 141, the compressed sealing ring 4 is further elastically deformed to be in close contact between the exhaust port 14 and the end of the deionization device 2, a gap 3 in the space is completely filled, the sealing effect can be achieved, and therefore high-temperature gas can completely enter the deionization chamber 2 along the exhaust port 14 to be adsorbed and cooled.

More preferably, a first groove 22 and a second groove 141 are provided, as shown in fig. 4, the first groove 22 is provided on the outer periphery of the end portion of the deionization apparatus 2, the second groove 141 is provided on the inner wall of the exhaust port 14, and the first groove 21 and the second groove 141 are positioned correspondingly to each other.

In this embodiment, the adopted sealing ring 4 is a rubber sealing ring, and a silica gel sealing ring or other structures capable of fully filling gaps can also be adopted.

In yet other embodiments, for example, the vent opening extends into an end of the vent opening communicating with the deionization unit and has a gap between an inner wall of the end and the vent opening, in which gap a sealing ring is disposed. Preferably, a circle of first grooves are formed in the outer peripheral surface of the exhaust port, correspondingly, a circle of second grooves are formed in the inner wall of the end part of the deionization device, which is communicated with the exhaust port, wherein the positions of the first grooves and the positions of the second grooves correspond to each other. In the breaking process, gas is sprayed out from the shell of the circuit breaker to the deionization device through the gas outlet, the sealing ring is extruded in the first groove and/or the second groove under the action of the rapidly sprayed gas, the compressed sealing ring is further elastically deformed to be in close contact with the end part of the deionization device and the gas outlet, and the gap in the space is completely filled, so that the sealing effect can be achieved, and high-temperature gas can enter the deionization chamber along the gas outlet to be adsorbed and cooled. In another embodiment, or the inner diameter of the end part of the exhaust port, which is inserted into the deionization device and communicated with the exhaust port, is gradually reduced, in the breaking process, gas is sprayed out from the arc extinguish chamber shell to the deionization chamber, the exhaust port expands outwards under the action of the rapidly sprayed gas, the sealing ring is pressed at the moment, the sealing ring is tightly contacted between the exhaust port and the inner wall of the end part of the deionization device, which faces the exhaust port, after elastic deformation occurs, and the gap in the space is completely filled, so that a better sealing effect is achieved.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A circuit breaker with a deionization device comprises a circuit breaker shell (1) and a deionization device (2), wherein a static contact (11), a movable contact (12) and an arc extinguish chamber (13) for extinguishing electric arcs generated when the static contact (11) is separated from the movable contact (12) are arranged inside the circuit breaker shell (1), an exhaust port (14) is formed in one side of the arc extinguish chamber (13) on the circuit breaker shell (1), and the deionization device (2) is arranged on the outer side of the circuit breaker shell (1) and one end of the deionization device is communicated with the exhaust port (14); the method is characterized in that: the end part of the deionization device (2) communicated with the exhaust port (14) extends into the exhaust port (14), or the exhaust port (14) extends into the end part of the deionization device (2) communicated with the exhaust port (14); and a circle of gap (3) is arranged between the end part of the deionization device (2) communicated with the exhaust port (14) and the exhaust port (14), and a sealing ring (4) is arranged in the gap (3).

2. The circuit breaker with deionization apparatus as claimed in claim 1, wherein: the periphery of the end part of the deionization device (2) communicated with the exhaust port (14) is provided with a first groove (22) around the circumference, and the inner edge of the sealing ring (4) is clamped in the first groove (22).

3. The circuit breaker with deionization apparatus as claimed in claim 2, wherein: and a second groove (141) is formed in the inner wall of the exhaust port (14), and the outer edge of the sealing ring (4) is clamped in the second groove (141).

4. The circuit breaker with deionization apparatus as claimed in claim 1, wherein: the deionization device (2) extending into the exhaust port (14) is communicated with a trumpet-shaped opening (21) at the end part of the exhaust port (14).

5. The circuit breaker with deionization apparatus as claimed in claim 1, wherein: the sealing ring (4) is a rubber sealing ring.

6. The circuit breaker with deionization apparatus as claimed in claim 1, wherein: the sealing ring (4) is a silica gel sealing ring.