CN114360960B - Quick circuit breaker double acting subassembly that presses - Google Patents
Quick circuit breaker double acting subassembly that presses Download PDFInfo
- Publication number
- CN114360960B CN114360960B CN202210031419.8A CN202210031419A CN114360960B CN 114360960 B CN114360960 B CN 114360960B CN 202210031419 A CN202210031419 A CN 202210031419A CN 114360960 B CN114360960 B CN 114360960B
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- crank
- cylinder
- air
- piston
- hinged
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
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- Circuit Breakers (AREA)
Abstract
The invention provides a pneumatic double-acting assembly of a quick breaker, which belongs to the field of quick breakers and comprises a pneumatic cylinder, wherein a supporting seat is arranged on one side of the pneumatic cylinder, which is provided with a piston, the supporting seat is fixedly arranged on a shell of the quick breaker, and a crank is arranged on one side of the supporting seat, which is close to the pneumatic cylinder; the middle part of the crank is hinged with the supporting seat, one end part of the crank is hinged with a connecting rod, and one end of the connecting rod far away from the crank is hinged with a piston of the air pressing cylinder; the other end part of the crank is hinged with a pull rod, and one end, far away from the crank, of the pull rod is fixedly connected with the cylinder body of the air pressing cylinder; the invention has the beneficial effects that the cylinder body and the piston of the air cylinder can move oppositely under the action of the crank, the connecting rod and the pull rod, so that the stroke of the air cylinder is increased, the pre-pressure of gas in the air cylinder on the quick breaker before the air cylinder is opened is improved, and the opening and closing capability of an arc extinguishing chamber on the quick breaker is improved.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a quick circuit breaker air compressing double-acting assembly.
Background
Because the quick circuit breaker is required to complete full-break of the circuit breaker current in extremely short time (less than or equal to 25 ms), the inherent arcing time of the circuit breaker needs to be compressed, the purpose of reducing the arcing time and the breaking time is generally achieved by adopting a mode of reducing the length of a static arcing contact in the prior art, but after the length of the static arcing contact is reduced, the movement stroke of the air cylinder just before the breaking is reduced, so that the air pressure in the air cylinder is reduced compared with the air pressure in the original structure, and the air blowing capacity of the air cylinder and the breaking capacity of an arc extinguishing chamber on the quick circuit breaker are reduced.
Disclosure of Invention
The invention aims to solve the problems of reduced volume of air in an air cylinder, shorter stroke of the air cylinder and the like of the conventional quick circuit breaker, and provides and designs an air compression double-acting assembly of the quick circuit breaker so as to improve the stroke of the air cylinder on the quick circuit breaker and improve the pressure of the air in the air cylinder.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows: the air compressing double-acting assembly of the quick breaker comprises an air compressing cylinder, wherein a supporting seat is arranged on one side of the air compressing cylinder, which is provided with a piston, the supporting seat is fixedly arranged on a shell of the quick breaker, and a crank is arranged on one side of the supporting seat, which is close to the air compressing cylinder; the middle part of the crank is hinged with the supporting seat, one end part of the crank is hinged with a connecting rod, and one end of the connecting rod far away from the crank is hinged with a piston of the air pressing cylinder; the other end of the crank is hinged with a pull rod, and one end, far away from the crank, of the pull rod is fixedly connected with the cylinder body of the air pressing cylinder. When the cylinder body of the air cylinder compresses air in the air cylinder, the cylinder body moves towards the direction approaching to the piston; simultaneously, the pull rod is driven to move along the same direction, and along with the movement of the pull rod, the pull rod drives the crank to rotate around a hinge point between the crank and the supporting seat, so that one end of the crank hinged with the pull rod rotates in a direction away from the air compressing cylinder, and one end of the crank hinged with the connecting rod rotates in a direction close to the air compressing cylinder, so that the connecting rod hinged with the crank is driven to move in a direction close to the air compressing cylinder; meanwhile, under the drive of the connecting rod, the hinged piston on the connecting rod moves towards the direction close to the cylinder body, so that the stroke of the air pressing cylinder is increased, the pre-pressure of gas in the air pressing cylinder on the quick breaker before the air pressing cylinder is opened is improved, and the opening and closing capacity of the arc extinguishing chamber on the quick breaker is improved.
Further, the piston of the air cylinder, the connecting rod and the crank form a first crank slide block mechanism, the crank is a driving piece of the first crank slide block mechanism, and the piston of the air cylinder is a slide block of the first crank slide block mechanism, so that the rotary motion of the crank can be converted into the linear reciprocating motion of the piston on the air cylinder through the first crank slide block mechanism.
Further, the cylinder body of the air cylinder, the pull rod and the crank form a second crank slide block mechanism, the cylinder body of the air cylinder is a driving piece of the second crank slide block mechanism, and the cylinder body of the air cylinder is a slide block of the second crank slide block mechanism, so that the linear reciprocating motion of the cylinder body of the air cylinder can be converted into the rotary motion of the crank through the second crank slide block mechanism.
Further, the first crank block mechanism and the second crank block mechanism are offset crank block mechanisms, so that interference among all parts is avoided.
Further, a sliding port is formed in the middle of the piston of the air pressing cylinder, one end, far away from the crank, of the pull rod penetrates through the sliding port and is fixedly connected with the inner side of the cylinder bottom of the cylinder body of the air pressing cylinder, and therefore the size of the whole structure can be reduced on the basis that the connecting relation between the pull rod and the cylinder body and between the pull rod and the crank is met.
Further, the pull rod is in sliding connection with the piston of the air cylinder, so that the pull rod is prevented from driving the piston to move in the same direction with the cylinder body when moving.
Further, a sealing piece is arranged between the pull rod and the piston of the air cylinder, so that gas in the air cylinder is prevented from leaking, and the normal operation of the air cylinder is influenced.
Further, at least two cranks are uniformly arranged on the supporting seat, each crank is hinged with the end part of the pull rod, each crank is hinged with a connecting rod, and each connecting rod is hinged with the piston of the air compressing cylinder, so that the stability of movement of the cylinder body and the piston is improved.
From the above technical scheme, the invention has the following advantages: after the quick breaker air compressing double-acting assembly is installed, when air in the air compressing cylinder of the quick breaker is compressed, the cylinder body and the piston of the air compressing cylinder can move in opposite directions under the action of the two groups of crank sliding block mechanisms, so that the stroke of the air compressing cylinder is increased, the pre-pressure of the air in the air compressing cylinder on the quick breaker before the air compressing cylinder is opened is improved, the opening and closing capacity of an arc extinguishing chamber on the quick breaker is improved, and the problems of stroke reduction and pressure reduction of the air compressing cylinder after the length of a static arc contact is reduced in the prior art are effectively solved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1. the cylinder comprises a cylinder pressing body, 2, a piston, 3, a connecting rod, 4, a pin shaft, 5, a crank, 6, a pull rod, 7, a supporting seat, 8, a sliding port, 9 and a cylinder body.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the invention provides a pneumatic double-acting assembly of a quick breaker, which comprises a pneumatic cylinder 1, wherein a supporting seat 7 is arranged on one side of the pneumatic cylinder 1, on which a piston 2 is arranged, the supporting seat 7 is fixedly arranged on a shell of the quick breaker, and a crank 5 is arranged on one side, close to the pneumatic cylinder 1, of the supporting seat 7. The middle part of crank 5 with supporting seat 7 articulates, one of them tip of crank 5 articulates has connecting rod 3, just keep away from on the connecting rod 3 the one end of crank 5 with piston 2 of air cylinder 1 articulates to make piston 2 and connecting rod 3, the crank 5 of air cylinder 1 constitute first slider crank mechanism, wherein piston 2 of air cylinder 1 is the slider of this first slider crank mechanism, crank 5 is the driving piece of this first slider crank mechanism, just crank 5 can directly adopt the shift fork. In addition, the other end of the crank 5 is hinged with a pull rod 6, and one end, far away from the crank 5, of the pull rod 6 is fixedly connected with the cylinder body 9 of the air cylinder 1, so that the cylinder body 9 of the air cylinder 1, the pull rod 6 and the crank 5 form a second crank slide block mechanism, and the cylinder body 9 of the air cylinder 1 is a driving piece and a slide block of the second crank slide block mechanism.
Preferably, a sliding opening 8 is arranged in the middle of the piston 2 of the air cylinder 1, one end, far away from the crank 5, of the pull rod 6 passes through the sliding opening 8 and is fixedly connected with the inner side of the cylinder bottom of the cylinder body 9, and the pull rod 6 is in sliding connection with the sliding opening 8, so that the connecting relation between the pull rod 6 and the cylinder body 9 and the crank 5 can be met, and the size of the whole structure can be reduced. Furthermore, as a further preference, in order to allow a smoother movement of the cylinder 9 and the piston 2 of the cylinder 1, the invention provides that at least two cranks 5 are uniformly arranged on the support seat 7, each crank 5 being hinged to the end of the tie rod 6, and each crank 5 being hinged to a connecting rod 3, each connecting rod 3 being hinged to the piston 2 of the cylinder 1.
Therefore, after the quick breaker air compressing double-acting assembly provided by the invention is arranged on the quick breaker, especially on a 252kV quick breaker, when the air in the air compressing cylinder 1 is compressed, the cylinder body 9 of the air compressing cylinder 1 moves relative to the piston 2, and meanwhile, the cylinder body 9 of the air compressing cylinder 1 drives the pull rod 6 to move along the same direction; along with the movement of the pull rod 6, as the middle part of the crank 5 is hinged on the fixed supporting seat 7, the pull rod 6 can drive the crank 5 to rotate around a hinge point between the crank 5 and the supporting seat 7, so that one end of the crank 5 hinged with the pull rod 6 rotates in a direction away from the air cylinder 1, and one end of the crank 5 hinged with the connecting rod 3 rotates in a direction close to the air cylinder 1, so that the connecting rod 3 hinged on the crank 5 is driven to move in a direction close to the air cylinder 1; and the piston 2 hinged on the connecting rod 3 moves towards the direction of the cylinder body 9 of the air cylinder 1 under the drive of the connecting rod 3. Therefore, under the action of the invention, the cylinder body 9 and the piston 2 of the inner pressure cylinder 1 of the quick breaker can move oppositely at the same time, thereby increasing the stroke of the pressure cylinder 1, improving the pre-pressure of the gas in the pressure cylinder 1 on the quick breaker before the breaking and improving the breaking capacity of the arc extinguishing chamber on the quick breaker.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The quick breaker air compressing double-acting assembly is characterized by comprising an air compressing cylinder (1), wherein a supporting seat (7) is arranged on one side of the air compressing cylinder (1) where a piston (2) is arranged, the supporting seat (7) is fixedly arranged on a shell of the quick breaker, and a crank (5) is arranged on one side, close to the air compressing cylinder (1), of the supporting seat (7); the middle part of the crank (5) is hinged with the supporting seat (7), one end part of the crank (5) is hinged with a connecting rod (3), and one end, far away from the crank (5), of the connecting rod (3) is hinged with a piston (2) of the air pressing cylinder (1); the other end part of the crank (5) is hinged with a pull rod (6), and one end, far away from the crank (5), of the pull rod (6) is fixedly connected with a cylinder body (9) of the air pressing cylinder (1);
the piston (2) of the air cylinder (1), the connecting rod (3) and the crank (5) form a first crank slide block mechanism, the crank (5) is a driving piece of the first crank slide block mechanism, and the piston (2) of the air cylinder (1) is a slide block of the first crank slide block mechanism;
the cylinder body (9) of the air cylinder (1), the pull rod (6) and the crank (5) form a second crank slide block mechanism, the cylinder body (9) of the air cylinder (1) is a driving piece of the second crank slide block mechanism, and the cylinder body (9) of the air cylinder (1) is a slide block of the second crank slide block mechanism.
2. The quick breaker compression double acting assembly of claim 1 wherein the first and second slider-crank mechanisms are offset slider-crank mechanisms.
3. The quick breaker air compressing double-acting assembly according to claim 1 or 2, wherein a sliding port (8) is arranged in the middle of a piston (2) of the air compressing cylinder (1), and one end, far away from a crank (5), of the pull rod (6) penetrates through the sliding port (8) and is fixedly connected with the inner side of a cylinder bottom of a cylinder body (9) of the air compressing cylinder (1).
4. A quick breaker displacer double action assembly according to claim 3 wherein the pull rod (6) is slidingly connected with the piston (2) of the cylinder (1).
5. A quick breaker displacer double acting assembly according to claim 4 wherein a seal is provided between the drawbar (6) and the piston (2) of the cylinder (1).
6. The quick breaker double acting assembly according to claim 5, characterized in that at least two cranks (5) are uniformly arranged on the support base (7), each crank (5) is hinged to the end of the pull rod (6), each crank (5) is hinged to a connecting rod (3), and each connecting rod (3) is hinged to the piston (2) of the air cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210031419.8A CN114360960B (en) | 2022-01-12 | 2022-01-12 | Quick circuit breaker double acting subassembly that presses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210031419.8A CN114360960B (en) | 2022-01-12 | 2022-01-12 | Quick circuit breaker double acting subassembly that presses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114360960A CN114360960A (en) | 2022-04-15 |
| CN114360960B true CN114360960B (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210031419.8A Active CN114360960B (en) | 2022-01-12 | 2022-01-12 | Quick circuit breaker double acting subassembly that presses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114360960B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1790578A (en) * | 2004-12-06 | 2006-06-21 | 日本Ae帕瓦株式会社 | Method of current interruption using buffer type gas circuit breaker and buffer type gas circuit breaker thereof |
| KR100932232B1 (en) * | 2009-02-12 | 2009-12-16 | (주)서전기전 | Compressed air puffer-type load breake switch(lbs) with a housing |
| CN103000467A (en) * | 2012-11-30 | 2013-03-27 | 西安交通大学 | Low-frequency circuit breaker used for three-frequency-division power transmission system |
| CN103531410A (en) * | 2012-07-04 | 2014-01-22 | 乐星湖开电气（湖北）有限公司 | Self-driven arc extinguishing chamber for double acting type high voltage SF6 breaker |
| CN106504940A (en) * | 2016-12-23 | 2017-03-15 | 中国西电电气股份有限公司 | A kind of double acting contact transmission device of breaker |
| CN108172462A (en) * | 2017-11-28 | 2018-06-15 | 河南大盛高压电气有限公司 | A kind of piston compression type arc-control device |
| CN109148215A (en) * | 2018-10-11 | 2019-01-04 | 西安西电开关电气有限公司 | Breaker |
| CN110071012A (en) * | 2019-05-08 | 2019-07-30 | 沈阳工业大学 | A kind of double acting arc-chutes of self extinguishing type |
| CN112635231A (en) * | 2020-10-21 | 2021-04-09 | 平高集团有限公司 | Double-acting arc extinguish chamber of circuit breaker and circuit breaker using same |
| CN213093122U (en) * | 2020-08-24 | 2021-04-30 | 平高集团有限公司 | Circuit breaker and gas insulated switchgear using same |
-
2022
- 2022-01-12 CN CN202210031419.8A patent/CN114360960B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1790578A (en) * | 2004-12-06 | 2006-06-21 | 日本Ae帕瓦株式会社 | Method of current interruption using buffer type gas circuit breaker and buffer type gas circuit breaker thereof |
| KR100932232B1 (en) * | 2009-02-12 | 2009-12-16 | (주)서전기전 | Compressed air puffer-type load breake switch(lbs) with a housing |
| CN103531410A (en) * | 2012-07-04 | 2014-01-22 | 乐星湖开电气（湖北）有限公司 | Self-driven arc extinguishing chamber for double acting type high voltage SF6 breaker |
| CN103000467A (en) * | 2012-11-30 | 2013-03-27 | 西安交通大学 | Low-frequency circuit breaker used for three-frequency-division power transmission system |
| CN106504940A (en) * | 2016-12-23 | 2017-03-15 | 中国西电电气股份有限公司 | A kind of double acting contact transmission device of breaker |
| CN108172462A (en) * | 2017-11-28 | 2018-06-15 | 河南大盛高压电气有限公司 | A kind of piston compression type arc-control device |
| CN109148215A (en) * | 2018-10-11 | 2019-01-04 | 西安西电开关电气有限公司 | Breaker |
| CN110071012A (en) * | 2019-05-08 | 2019-07-30 | 沈阳工业大学 | A kind of double acting arc-chutes of self extinguishing type |
| CN213093122U (en) * | 2020-08-24 | 2021-04-30 | 平高集团有限公司 | Circuit breaker and gas insulated switchgear using same |
| CN112635231A (en) * | 2020-10-21 | 2021-04-09 | 平高集团有限公司 | Double-acting arc extinguish chamber of circuit breaker and circuit breaker using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114360960A (en) | 2022-04-15 |
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