CN202948872U - Vacuum circuit breaker - Google Patents
Vacuum circuit breaker Download PDFInfo
- Publication number
- CN202948872U CN202948872U CN2012205015688U CN201220501568U CN202948872U CN 202948872 U CN202948872 U CN 202948872U CN 2012205015688 U CN2012205015688 U CN 2012205015688U CN 201220501568 U CN201220501568 U CN 201220501568U CN 202948872 U CN202948872 U CN 202948872U
- Authority
- CN
- China
- Prior art keywords
- armature
- push rod
- vacuum
- vacuum circuit
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- H01H33/02—Details
- H01H33/022—Details particular to three-phase circuit breakers
- H01H2033/024—Details particular to three-phase circuit breakers with a triangular setup of circuit breakers
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A vacuum circuit breaker comprises a three-phase vacuum explosion chamber arranged on a support. An insulating push rod connected to a moving contact is arranged on the explosion chamber. The vacuum circuit breaker further comprises an armature. The tail end of the insulating push rod is connected on the side surface of the armature. The armature is connected to the support through a reaction spring. The armature back on the side connected with the insulating push rod is provided with an electric magnet matching the armature. When the electric magnet is turned on to attract the armature, the armature then overcomes the pulling force of an extension spring and drives the push rod to break a circuit. By using the attraction of the electric magnet to supply opening and closing power of the vacuum explosion chamber, the vacuum circuit breaker can prevent the contact from being damaged due to the fact that the driving force is not smooth and linear during the vacuum explosion chamber opening and closing processes. After the vacuum circuit breaker is used, the vacuum explosion chamber generates no vibration when being closed. The service lifetime of the vacuum circuit breaker is thus prolonged.
Description
Technical field
The utility model relates to a kind of circuit breaker, is specifically related to a kind of vacuum circuit-breaker.
Background technology
Be provided with vacuum interrupter in traditional vacuum circuit-breaker, the indoor moving contact of vacuum extinction drives motion by the insulation push rod, and push rod is connected on transmission mechanism substantially.Whether the power that produces when the operation transmission mechanism folding because of operating personnel is not the linear closing speed that inevitably has influence on contact even.The electric mill erosion of closing speed major effect contact.As too low in closing speed, pre arcing time is long, and the time that electric arc exists is long, and the contact surface electrical wear is large, even makes contact melting welding and clings the electric life of reduction arc control device.But speed is too high, easily produces closing rebound, and the operating mechanism output work also will increase, and is large to arc control device and complete machine mechanical shock, affects dependability and the mechanical endurance of product.
And, adopt mechanical structure transmission meeting to produce vibrations, vibrations not only can affect the air-tightness of vacuum interrupter, and can affect the contact between quiet, moving contact, easily form the half-open state that narrows between contact, can cause electric fault when serious.
Therefore, a kind of energy of exploitation vacuum circuit-breaker stable and quickly opening and closing becomes problem in the urgent need to address.
The utility model content
The technical problems to be solved in the utility model is: propose that a kind of energy is stable, the vacuum circuit-breaker of quickly opening and closing.
The utility model is that the technical scheme that solves the problems of the technologies described above proposition is: a kind of vacuum circuit-breaker, comprise rack-mount three-phase vacuum interrupter, described arc control device are provided with the insulation push rod that is connected to moving contact, comprise armature, the end of described insulation push rod is connected on the side of described armature, described armature is connected to support by reaction spring, the side back side that described armature is connected with the insulation push rod is provided with the electromagnet that matches with this armature, attract described armature, described armature to overcome tension spring tension when electromagnet is connected and drive described push rod open circuit.
The beneficial effects of the utility model are:
The utility model utilizes the suction of electromagnet that the opening and closing lock power of vacuum interrupter is provided, and can avoid vacuum interrupter not to be because of actuating force the contact generation damage that smooth linear causes when the opening and closing lock; After using the utility model, vacuum interrupter does not produce vibration when closing a floodgate, thereby has extended the useful life of vacuum circuit-breaker.
Having improved of technique scheme:
In order to reduce box volume of the present utility model, the axle center of described three-phase vacuum interrupter consists of three summits of equilateral triangle.
For the folding that makes the three-phase vacuum interrupter keeps high level of synchronization, described insulation push rod is connected to same armature, and the iron core of described electromagnet is aimed at described axle center and form leg-of-mutton center on armature.
Be connected with spring in order to make moving contact have certain contact process, to have between described insulation push rod end and armature.
Description of drawings
Below in conjunction with accompanying drawing, vacuum circuit-breaker of the present utility model is described further.
Fig. 1 is the structural representation of the utility model vacuum circuit-breaker.
Fig. 2 is the distribution schematic diagram of three-phase vacuum interrupter on armature of the utility model vacuum circuit-breaker.
Embodiment
According to shown in Figure 1, the utility model comprises and is provided with moving contact 3, insulation push rod 4, armature 5, reaction spring 6, electromagnet 7 in support 1, vacuum interrupter 2, vacuum interrupter 2.
Wherein, the vacuum interrupter 2 of three-phase is arranged on support 1, the axle center of three-phase vacuum interrupter 2 consists of three summits of equilateral triangle, the moving contact 3 of vacuum extinction indoor 2 is connected with insulation push rod 4, the end of insulation push rod 4 is arranged on the side of armature 5, is provided with away from the opposite side of vacuum interrupter 2 electromagnet 7 that matches with this armature 5 at armature 5.
When vacuum interrupter 2 is disconnected, connect the circuit of electromagnet 7, electromagnet 7 attracts armature 5, and pulling force effect and drive insulation push rod 4 that armature 5 overcomes counter-force extension spring 6 disconnect whole high-tension circuit.
In the time will making vacuum interrupter 2 closed, disconnect the circuit of electromagnet 7, the attraction vanishing of 7 pairs of armature 5 of electromagnet, armature 5 drives the closed whole high-tension circuit of insulation push rod 4 under the pulling force effect of reaction spring 6.
The above-described embodiment that is not limited to of the present utility model, all employings are equal to replaces the technical scheme that forms, and all drops in the protection range of the utility model requirement.
Claims (4)
1. vacuum circuit-breaker, comprise rack-mount three-phase vacuum interrupter, described arc control device are provided with the insulation push rod that is connected to moving contact, it is characterized in that: comprise armature, the end of described insulation push rod is connected on the side of described armature, described armature is connected to support by reaction spring, the side back side that described armature is connected with the insulation push rod is provided with the electromagnet that matches with this armature, attract described armature, described armature to overcome tension spring tension when electromagnet is connected and drive described push rod open circuit.
2. vacuum circuit-breaker according to claim 1, it is characterized in that: the axle center of described three-phase vacuum interrupter consists of three summits of equilateral triangle.
3. vacuum circuit-breaker according to claim 2, it is characterized in that: described insulation push rod is connected to same armature, and the iron core of described electromagnet is aimed at described axle center and form leg-of-mutton center on armature.
4. vacuum circuit-breaker according to claim 1, is characterized in that: be connected with spring between described insulation push rod end and armature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205015688U CN202948872U (en) | 2012-09-28 | 2012-09-28 | Vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205015688U CN202948872U (en) | 2012-09-28 | 2012-09-28 | Vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202948872U true CN202948872U (en) | 2013-05-22 |
Family
ID=48424563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205015688U Expired - Fee Related CN202948872U (en) | 2012-09-28 | 2012-09-28 | Vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202948872U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342197A (en) * | 2017-08-23 | 2017-11-10 | 河北宝凯电气股份有限公司 | A kind of slide type Arc Distinguishing Device for Circuit Breakers |
| CN110600343A (en) * | 2019-10-18 | 2019-12-20 | 曲阜师范大学 | Electrical engineering distribution circuit breaker |
| CN111489915A (en) * | 2020-04-28 | 2020-08-04 | 羊贷丽 | Vacuum switch |
-
2012
- 2012-09-28 CN CN2012205015688U patent/CN202948872U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342197A (en) * | 2017-08-23 | 2017-11-10 | 河北宝凯电气股份有限公司 | A kind of slide type Arc Distinguishing Device for Circuit Breakers |
| CN107342197B (en) * | 2017-08-23 | 2020-06-09 | 河北宝凯电气股份有限公司 | Arc extinguishing device of sliding plate type circuit breaker |
| CN110600343A (en) * | 2019-10-18 | 2019-12-20 | 曲阜师范大学 | Electrical engineering distribution circuit breaker |
| CN111489915A (en) * | 2020-04-28 | 2020-08-04 | 羊贷丽 | Vacuum switch |
| CN111489915B (en) * | 2020-04-28 | 2022-11-08 | 国网安徽省电力有限公司池州市贵池区供电公司 | Vacuum switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20200928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |