CN218782966U

CN218782966U - Double-pressure arc extinguish chamber of SF6 circuit breaker

Info

Publication number: CN218782966U
Application number: CN202223106060.0U
Authority: CN
Inventors: 车传强; 赵磊; 刘天宇; 冯汝明; 赵俊; 种佳丽
Original assignee: Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Current assignee: Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-03-31
Anticipated expiration: 2032-11-23

Abstract

The utility model discloses a two pressure explosion chambers of SF6 circuit breaker, the device comprises a device body, be provided with left casing and right casing in the device body respectively, left side casing and right casing junction cover are equipped with sealed sleeve, left side casing right side is provided with the grafting ring, right side casing left side has been seted up inserting groove and inserting ring and has been corresponded the grafting, be provided with the quiet arc contact in the casing of a left side, it corresponds with quiet arc contact to be provided with moving arc contact and moving arc contact in the casing of the right side, moving arc contact right side is connected with inflator and inflator front end and has seted up the arc extinguishing spout, moving arc contact outside cover is equipped with the piston of calming the anger, from this, can realize dismantling the operation to the fast assembly of device body, has avoided the explosion chamber of integration welding to dismantle the maintenance, and the equipment is wasted time and energy the scheduling problem, can realize the double sealing between piston of calming the anger and the right shells inner wall, avoids the piston to lead to the gas leakage problem that the wearing and tearing in the outside of calming the anger.

Description

Double-pressure arc extinguish chamber of SF6 circuit breaker

Technical Field

The utility model relates to a two pressure explosion chambers of SF6 especially relates to a two pressure explosion chambers of SF6 circuit breaker, belongs to SF6 circuit breaker technical field.

Background

The SF6 circuit breaker is a circuit breaker taking SF6 gas as an insulating medium, the high-voltage SF6 circuit breaker is an important element in a power grid, and the SF6 gas has excellent insulation and arc extinguishing performance, so that the SF6 circuit breaker has the following advantages: the breaker has strong breaking capacity, high fracture voltage, more continuous breaking times, low noise, no fire hazard, small electromechanical abrasion and the like, is suitable for frequent operation, and is a maintenance-free breaker with excellent performance.

The publication numbers in the prior art are: CN 206480554U utility model provides a sulfur hexafluoride arc extinguish chamber structure, it passes through the aspiration pump, the air feed pump is moving, form the air current between the static contact, realize moving, the initiative arc extinguishing when the static contact breaks off, because a plurality of gas pockets of both sides are stagger one by one, consequently moving, the air current that forms between the static contact is crooked, not only can cut the electric arc in the perpendicular to electric arc direction, can also reduce the electric arc area in the direction that is on a parallel with the electric arc, consequently, good initiative arc extinguishing effect has, but it does not possess the dismantlement ability to the arc extinguish chamber, integrated into one piece's arc extinguish chamber is not convenient for overhaul the operation, it will be very troublesome if the trouble or damage appears, simultaneously it does not possess the sealed protection between compressed air piston and the shells inner wall, it receives the friction damage and will lead to the leakproofness to reduce to use for a long time, influence its life, therefore, we need upgrade and reform transform on prior art's basis.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a two pressure explosion chambers of SF6 circuit breaker, this two pressure explosion chambers of SF6 circuit breaker can realize the fast assembly and the dismantlement operation to the device body, and the explosion chamber of having avoided the integration welded can't be dismantled and overhaul, and the equipment scheduling problem that wastes time and energy can realize the double seal to between piston and the right shells inner wall of calming the anger, avoids the gas leakage problem that the piston of calming the anger leads to because of outside wearing and tearing.

In order to solve the problems, the following technical scheme is provided:

the design is a double-pressure arc extinguish chamber of the SF circuit breaker, which comprises a device body, be provided with left casing and right casing in the device body respectively, left side casing and right casing junction cover are equipped with sealed sleeve, left side casing right side is provided with the grafting ring, inserting groove and grafting ring correspondence grafting have been seted up in the right side casing left side, be provided with quiet arc contact in the left side casing, it corresponds with quiet arc contact to be provided with moving arc contact and moving arc contact in the right side casing, moving arc contact right side is connected with the pressure inflator and the pressure inflator front end has seted up the arc extinguishing spout, moving arc contact outside cover is equipped with the piston of calming the anger.

Furthermore, the butt joint of the left shell and the right shell is provided with external threads, and the sealing sleeve is in threaded connection with the external threads.

Furthermore, a sealing ring is arranged on the inner side of the insertion groove, and the front end of the insertion ring is tightly pressed and attached to the sealing ring.

Furthermore, a gas pressing plate is fixedly arranged on the right side of the gas pressing piston, and a plurality of groups of vent holes are formed in the gas pressing plate.

Furthermore, the right side of the air compression plate is provided with a flexible gasket, and the right side of the flexible gasket is provided with a support ring.

Furthermore, the support ring right side elastic connection has the spring and spring one side and the inner wall connection of right casing.

Furthermore, the spring is provided with spacing post and right casing fixed connection with right casing junction.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model discloses a be provided with inserting groove, external screw thread and sealing sleeve in the device, embed into the sealing washer in the inserting groove during use, correspond grafting through inserting ring and inserting groove with right casing and left casing, through the external screw thread with the sealing sleeve spiro union in the left casing and the right casing outside, can realize the fast assembly and the dismantlement operation to the device body, avoided the unable dismantlement maintenance that goes on of integration welded explosion chamber, the equipment scheduling problem that wastes time and energy.

2. The utility model discloses a be provided with flexible packing ring, support ring and spring in the device, promote flexible packing ring through the piston of calming the anger during use and remove and deformation, flexible packing ring and the inner wall of right side casing are close to be laminated and are promoted support ring synchronous motion, and support ring extrusion spring contracts, and the spring drives its and resets after using, can realize the double seal to between piston of calming the anger and the right side shells inner wall, avoids the gas leakage problem that the piston of calming the anger leads to because of outside wearing and tearing.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of a dual-voltage arc-extinguishing chamber of an SF6 circuit breaker according to the present invention;

fig. 2 is an exploded view of the overall structure of a dual-voltage arc-extinguishing chamber of an SF6 circuit breaker according to the present invention;

fig. 3 is a cross-sectional view of the internal structure of a dual-voltage arc-extinguishing chamber of an SF6 circuit breaker according to the present invention;

fig. 4 is a partial structure exploded view of a double-voltage arc-extinguishing chamber of an SF6 circuit breaker according to the present invention.

In the figure: 1. a device body; 2. a left housing; 3. a right housing; 4. an external thread; 5. a sealing sleeve; 6. inserting grooves; 7. a plug-in ring; 8. a seal ring; 9. a stationary arc contact; 10. a moving arc contact; 11. an arc extinguishing nozzle; 12. an air pressing cylinder; 13. a displacer; 14. a gas pressing plate; 15. A support ring; 16. a flexible gasket; 17. a spring; 18. a limiting column.

Detailed Description

In order to make the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to understand and understand, the utility model is further explained by combining the specific implementation mode.

As shown in fig. 1-4, the double-pressure arc-extinguishing chamber of the SF6 circuit breaker provided by the embodiment comprises a device body 1, a left shell 2 and a right shell 3 are respectively arranged in the device body 1, a sealing sleeve 5 is sleeved at the joint of the left shell 2 and the right shell 3, an insertion ring 7 is arranged on the right side of the left shell 2, an insertion groove 6 is formed in the left side of the right shell 3, the insertion groove 6 and the insertion groove 6 are correspondingly inserted into the insertion ring 7, a static arc contact 9 is arranged in the left shell 2, a dynamic arc contact 10 is arranged in the right shell 3, the dynamic arc contact 10 corresponds to the static arc contact 9, the right side of the dynamic arc contact 10 is connected with an air pressing cylinder 12, an arc-extinguishing nozzle 11 is formed at the front end of the air pressing cylinder 12, and an air pressing piston 13 is sleeved outside the dynamic arc contact 10.

Preferably, left casing 2 all is provided with external screw thread 4 with 3 butt joints of right casing, and sealing sleeve 5 spiro union is convenient for install and dismantle sealing sleeve 5 on external screw thread 4.

Preferably, the sealing ring 8 is arranged on the inner side of the insertion groove 6, and the front end of the insertion ring 7 is tightly pressed and attached to the sealing ring 8, so that the left shell 2 and the right shell 3 can be conveniently butted and sealed.

Preferably, the right side of the air compression piston 13 is fixedly provided with an air compression plate 14, and the air compression plate 14 is provided with a plurality of groups of vent holes, so that the air compression efficiency is improved.

Preferably, the right side of the compression plate 14 is provided with a flexible gasket 16 and the right side of the flexible gasket 16 is provided with a support ring 15, so that the sealing performance between the compression piston 13 and the inner wall of the right housing 3 is improved, and gas is prevented from passing between the compression piston 13 and the housing and leaking.

Preferably, a spring 17 is elastically connected to the right side of the support ring 15, and one side of the spring 17 is connected to the inner wall of the right housing 3, so as to facilitate the elastic movement of the support ring 15 and the flexible washer 16.

Preferably, the joint of the spring 17 and the right housing 3 is provided with a limit post 18, and the limit post 18 is fixedly connected with the right housing 3, so that the spring 17 is limited to a certain extent.

The utility model discloses an application principle and use flow: when the device is used, firstly, the internal structure of the device body 1 is assembled, the left shell 2 and the right shell 3 are connected, the sealing ring 8 is placed in the insertion groove 6, the insertion ring 7 is inserted in the insertion groove 6, at the moment, the two groups of external threads 4 correspond, the sealing sleeve 5 is screwed at the joint of the left shell 2 and the right shell 3, vice versa during disassembly, disassembly and maintenance operations of the device body 1 can be realized, the problems that the integrally welded arc extinguish chamber cannot be disassembled and maintained, time and labor are wasted during assembly and the like are avoided, during the movement process of the air compression piston 13, the static arc contact 9 is separated from the dynamic arc contact 10, SF6 gas is sprayed out through the air compression cylinder 12 and the arc extinguish spout 11 and enters the arc position through the outer sides of the air compression plate 14 and the dynamic arc contact 10 to perform arc extinguish operations, the flexible gasket 16 and the support ring 15 are pushed to synchronously move when the air compression piston 13 moves backwards, the support ring 15 pushes the spring 17 to contract, the flexible gasket 16 is deformed under force and is attached to the inner wall of the right shell 3, double sealing between the air compression piston 13 and the outer side abrasion of the air compression piston 13 is avoided to cause gas leakage.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention has been described in connection with the specific embodiments, but it should be clear to those skilled in the art that these descriptions are only illustrative and not intended to limit the scope of the present invention. Various modifications and alterations of this invention will become apparent to those skilled in the art based upon the spirit and principles of this invention, and such modifications and alterations are also within the scope of this invention.

Claims

1. The utility model provides a two pressure explosion chambers of SF6 circuit breaker, a serial communication port, includes device body (1), be provided with left casing (2) and right casing (3) in device body (1) respectively, left side casing (2) and right casing (3) junction cover are equipped with sealing sleeve (5), left side casing (2) right side is provided with grafting ring (7), right side casing (3) left side has been seted up inserting groove (6) and has been corresponded grafting with grafting ring (7), be provided with quiet arc contact (9) in left side casing (2), be provided with in right side casing (3) moving arc contact (10) and correspond with quiet arc contact (9), moving arc contact (10) right side is connected with pressure inflator (12) and presses inflator (12) front end to have seted up spout (11), the cover is equipped with piston (13) of calming the anger outside moving arc contact (10).

2. The double-voltage arc-extinguishing chamber of an SF6 circuit breaker as claimed in claim 1 wherein said left housing (2) and right housing (3) are each provided with external threads (4) at their butt joint, said sealing sleeve (5) being screwed onto said external threads (4).

3. The double-pressure arc extinguish chamber of an SF6 circuit breaker as claimed in claim 1, wherein a sealing ring (8) is arranged inside the inserting groove (6), and the front end of the inserting ring (7) is pressed and attached to the sealing ring (8).

4. The double-pressure arc extinguish chamber of an SF6 circuit breaker as claimed in claim 1, wherein a gas compression plate (14) is fixedly arranged at the right side of the gas compression piston (13), and a plurality of groups of vent holes are formed in the gas compression plate (14).

5. Double voltage arc chute of an SF6 circuit breaker, according to claim 4, characterized in that said gas platen (14) is provided with a flexible gasket (16) on the right and a support ring (15) on the right of the flexible gasket (16).

6. Double pressure arc chute of an SF6 circuit breaker according to claim 5, wherein a spring (17) is elastically connected to the right side of the support ring (15) and one side of the spring (17) is connected to the inner wall of the right housing (3).

7. The double-voltage arc extinguish chamber of an SF6 circuit breaker as claimed in claim 6, wherein a limiting column (18) is arranged at the joint of the spring (17) and the right shell (3), and the limiting column (18) is fixedly connected with the right shell (3).