CN2879398Y - Vacuum breaker with double buffer shock-proof device - Google Patents
Vacuum breaker with double buffer shock-proof device Download PDFInfo
- Publication number
- CN2879398Y CN2879398Y CN 200620055251 CN200620055251U CN2879398Y CN 2879398 Y CN2879398 Y CN 2879398Y CN 200620055251 CN200620055251 CN 200620055251 CN 200620055251 U CN200620055251 U CN 200620055251U CN 2879398 Y CN2879398 Y CN 2879398Y
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- China
- Prior art keywords
- buffer
- buffering
- breaker
- opening
- circuit breaker
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- Expired - Fee Related
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
A vacuum circuit breaker with two buffer damper devices comprises a frame and a buffer provided at a bottom of the frame, the frame is provided with a circuit breaker operation mechanism, an opening device and a main axes, an inflective arm driving the buffer is provided on the main axes, and an other inflective arm is also mounted on the main axes, a secondary buffer drived by a buffer inflective arm is arranged at the bottom of the frame. The two buffers are cooperated to be used so that the circuit breaker has a secondary buffer damping effect. During opening of the circuit breaker, an instantaneous opening speed and an average opening speed of the movable contact are ensured and damping action of the movable contact is increased, so as to accelerate energy absorbing and decrease the speed of the movable contact at an end of the opening, limiting of the movable contact is controlled accurately, thereby largely decreasing libration phenomena of the opening, effectively preventing generation of an electric arc re-burnt phenomenon, so that a whole machinability of the utility model is more stable.
Description
Technical field
The utility model relates to a kind of switchgear of high-tension circuit, is a kind of vacuum circuit-breaker with the double buffering damping device specifically.
Background technology
Along with the development of domestic and international electric utility, particularly in the application of high pressure technique, the application of vacuum circuit-breaker on circuit switch equipment more and more widely.In the course of work of circuit breaker, because the energy of electric arc is very big, for preventing the phenomenon of restriking of electric arc, cut-offfing faulty circuit reliably is the most difficult task of vacuum circuit-breaker, therefore, stability requirement to the mechanical performance of vacuum circuit-breaker is also just stricter, and especially the control to moving contact switch off oscillation phenomenon seems important day by day.In the prior art, for overcoming the switch off oscillation phenomenon of moving contact, most vacuum circuit-breaker all is to adopt the first-level buffer damping device, this device plays damping action in the high speed separating brake process of circuit breaker, the portion of energy that can absorb moving contact motion and be prevents that some parts in the circuit breaker are impaired and suppresses the springing phenomenon of moving contact.But, adopt the vacuum circuit-breaker of first-level buffer damping device, when cut-offfing faulty circuit, its just-off speed and opening velocity often are difficult to obtain best correlated state, debugging difficulty is bigger, under set opening velocity situation, can not control the springing amplitude of moving contact well, spacing not accurate enough, at the separating brake stroke terminal, the springing phenomenon of moving contact is still very obvious, reduced cut-offfing failed shorted and preventing the ability of arc reignition of circuit breaker, made circuit breaker be difficult to adapt to the variation of environment for use and the requirement of technical stability own.
Summary of the invention
It is high that the purpose of this utility model provides a kind of stability, and debugging is easily with the vacuum circuit-breaker of double buffering damping device.
Goal of the invention of the present utility model is achieved in that a kind of vacuum circuit-breaker with the double buffering damping device, comprise framework and the buffer of being located at base of frame, be provided with breaker operation mechanism, switching-off device and main shaft in the framework, main shaft is provided with the connecting lever that can drive buffer, it is characterized in that: described main shaft is provided with the buffering connecting lever, and being provided with in the framework can be by the level 2 buffering device of buffering connecting lever driving.
Described level 2 buffering device is located at base of frame.
Described level 2 buffering device is an oil bumper.
Described level 2 buffering device is an air buffer.
Described level 2 buffering device is the rubber stopper buffer.
The utility model improves existing vacuum circuit-breaker, set up the level 2 buffering device in the bottom of framework, and on main shaft, be provided with the buffering connecting lever that is used to drive the level 2 buffering device, both be convenient to install and debugging, and made vacuum circuit-breaker have the level 2 buffering damping effect.At circuit breaker during separating brake, the double buffering damping device is used, the just-off speed and the average mark lock speed of moving contact can have been guaranteed well, can strengthen the damping action of moving contact again, quicken the absorption of its energy, reduce the speed of moving contact at the separating brake end, to the spacing precise control of moving contact, slowed down the springing phenomenon of separating brake greatly, prevented the generation of arc reignition phenomenon effectively, made the overall mechanical properties of circuit breaker more stable.
Description of drawings
Accompanying drawing 1 is the structural representation of the vacuum circuit-breaker of the utility model band double buffering damping device.
Accompanying drawing 2 is the syndeton schematic diagram of switching-off device of the present utility model
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
According to illustrated in figures 1 and 2, the vacuum circuit-breaker of the utility model band double buffering damping device comprises framework 1 and is located at the buffer 2 of framework 1 bottom, this buffer 2 is arranged on wherein between the two-phase of circuit breaker, be respectively equipped with breaker operation mechanism in the framework 1, switching-off device 3 and main shaft 4, the connecting lever 5 that can drive buffer is housed on the main shaft 4, can realize the branch of contact by breaker operation mechanism, close action, switching-off device 3 is the inhibition and the release of may command main shaft 4 then, simultaneously, in order to control the switch off oscillation phenomenon of moving contact better, on main shaft 4, also be provided with a buffering connecting lever 6, being provided with in the framework can be by the level 2 buffering device 7 of buffering connecting lever 6 drivings, an other phase position of level 2 buffering device 7 and circuit breaker is corresponding, makes the novel vacuum circuit-breaker of this use have the level 2 buffering damping effect.Buffer 2 and level 2 buffering device 7 can be oil bumper, also can be air buffer or rubber stopper buffer, and be better for making buffering and damping effect, and two buffers of the present utility model are all oil bumper.For two buffers cooperating better, connecting lever 5 is shorter with the contacting travel of buffer 2, the level 2 buffering device 7 that is provided with in addition is then longer with the contacting travel of buffering connecting lever 6, two buffers are successively moved, both guarantee the just-off speed and the average mark lock speed of separating brake, slowed down the bounce-back action of moving contact again greatly, simultaneously, two buffers all are located at well-to-do bottom in the framework 1, are convenient to install and debugging.When circuit breaker when cut-offfing faulty circuit, make the moving contact separating brake by breaker operation mechanism, driving switching-off device 3 allows main shaft 4 break away from inhibition, driving connecting lever 5 rotates, connecting lever 5 contact buffers 2, buffer 2 has absorbed most of kinetic energy of device, under the situation that guarantees just-off speed, opening velocity is reduced gradually; After buffer 2 falls a segment distance, buffering connecting lever 6 begins to contact level 2 buffering device 7, because the auxiliary use of level 2 buffering device 6 has strengthened the damping action to moving contact, has quickened the absorption of energy, make moving contact in the speed of separating brake terminal approaching zero, improved the spacing accuracy of moving contact greatly, slowed down the springing phenomenon of moving contact, prevented the phenomenon of restriking of electric arc effectively at stroke terminal, make to the utlity model has good mechanical property the advantage that stability is high.
Claims (5)
1. vacuum circuit-breaker with the double buffering damping device, comprise framework (1) and be located at the buffer (2) of framework (1) bottom, be provided with breaker operation mechanism, switching-off device (3) and main shaft (4) in the framework (1), main shaft (4) is provided with the connecting lever (5) that can drive buffer (2), it is characterized in that: described main shaft (4) is provided with buffering connecting lever (6), and being provided with in the framework (1) can be by the level 2 buffering device (7) of buffering connecting lever (6) driving.
2. the vacuum circuit-breaker of band double buffering damping device according to claim 1 is characterized in that: described level 2 buffering device (7) is located at framework (1) bottom.
3. the vacuum circuit-breaker of band double buffering damping device according to claim 1 is characterized in that: described level 2 buffering device (7) is an oil bumper.
4. the vacuum circuit-breaker of band double buffering damping device according to claim 1 is characterized in that: described level 2 buffering device (7) is an air buffer.
5. the vacuum circuit-breaker of band double buffering damping device according to claim 1 is characterized in that: described level 2 buffering device (7) is the rubber stopper buffer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620055251 CN2879398Y (en) | 2006-02-24 | 2006-02-24 | Vacuum breaker with double buffer shock-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620055251 CN2879398Y (en) | 2006-02-24 | 2006-02-24 | Vacuum breaker with double buffer shock-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2879398Y true CN2879398Y (en) | 2007-03-14 |
Family
ID=37861818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620055251 Expired - Fee Related CN2879398Y (en) | 2006-02-24 | 2006-02-24 | Vacuum breaker with double buffer shock-proof device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2879398Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840809A (en) * | 2010-03-15 | 2010-09-22 | 常州太平洋电力设备(集团)有限公司 | Vacuum circuit breaker with air cushioning |
| CN108346529A (en) * | 2017-01-22 | 2018-07-31 | 上海电器股份有限公司人民电器厂 | A kind of mechanism with flexible splitting lock cushioning anti-rebounding device on low-voltage circuit breaker |
| CN111681927A (en) * | 2020-06-02 | 2020-09-18 | 上海电气集团股份有限公司 | Buffer device of low-voltage circuit breaker |
-
2006
- 2006-02-24 CN CN 200620055251 patent/CN2879398Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840809A (en) * | 2010-03-15 | 2010-09-22 | 常州太平洋电力设备(集团)有限公司 | Vacuum circuit breaker with air cushioning |
| CN108346529A (en) * | 2017-01-22 | 2018-07-31 | 上海电器股份有限公司人民电器厂 | A kind of mechanism with flexible splitting lock cushioning anti-rebounding device on low-voltage circuit breaker |
| CN108346529B (en) * | 2017-01-22 | 2020-06-19 | 上海电器股份有限公司人民电器厂 | Mechanism with flexible brake-separating buffering anti-rebound device on low-voltage circuit breaker |
| CN111681927A (en) * | 2020-06-02 | 2020-09-18 | 上海电气集团股份有限公司 | Buffer device of low-voltage circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070314 Termination date: 20120224 |