CN207303024U - A kind of slide type Arc Distinguishing Device for Circuit Breakers - Google Patents
A kind of slide type Arc Distinguishing Device for Circuit Breakers Download PDFInfo
- Publication number
- CN207303024U CN207303024U CN201721062799.2U CN201721062799U CN207303024U CN 207303024 U CN207303024 U CN 207303024U CN 201721062799 U CN201721062799 U CN 201721062799U CN 207303024 U CN207303024 U CN 207303024U
- Authority
- CN
- China
- Prior art keywords
- breaker
- static contact
- armature
- shielding plate
- insulation shielding
- 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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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of slide type Arc Distinguishing Device for Circuit Breakers, for improving the ability of breaker disjunction short circuit current flow, its technical solution is that composition includes insulation shielding plate, armature, yoke, horizontal sliding bar and compression spring, and the yoke is fixed on the side of circuit breaker static contact；The insulation shielding plate and armature are located at the opposite side of static contact, and the gap that insulation shielding plate is fixed on armature and between the moving contact and static contact of breaker is corresponding；One end of the horizontal sliding bar is fixedly connected with yoke, and the other end screws in screwed retaining ring after sequentially passing through compression spring and armature.In the gap that the insulation shielding plate of the utility model can be rapidly inserted between the moving contact of breaker and static contact in breaker disjunction short circuit current flow, make the arc extinction between dynamic and static contact, thus shorten the amplification time of arc energy, the short arcing of breaker is realized or without arcing, so as to substantially increase the ability of breaker disjunction short circuit current flow.
Description
Technical field
The utility model is related to one kind can effectively prevent from producing during breaker disjunction short circuit current flow, between its dynamic and static contact
The device of larger electric arc, belongs to switching technique field.
Background technology
Moulded case circuit breaker (MCCB), omnipotent breaker (ACB) be it is industrial with civilian low-voltage distribution apparatus in
Important electric elements, the branch switch or master switch for being used as low-voltage distribution system more.At present, domestic and international MCCB, ACB are used and gone out
Caused high temperature and pressure electric arc is cooled down and extinguished when arc chamber technology is to disjunction short circuit current flow, the arc quenching principle of this technology
It is：During disjunction short circuit current flow, after producing electric arc between dynamic and static contact and elongating to after certain length, energy accordingly amplification, use
Magnetic field electro-dynamic force or other means driving high energy arc enters arc-chutes, under the cooling effect for making its metal grid in arc-chutes
Extinguish.The arc quenching effect of this method be subject to arc-chutes material, contact cut-off speed, clearance between open contacts, contact material etc. because
The influence of element, especially for the MCCB of single-break structure, the ability of its disjunction short circuit current flow is poor, is usually no more than exchange
400V, 30~50kA, if improving this performance parameter again, manufacture cost will greatly improve.And direct-current short circuit electric current due to
There is no zero passage process to be less susceptible to disjunction.
With the raising that the construction and development and people of power grid require electric network reliability, a kind of new go out objectively is needed
Arc scheme, to greatly improve the ability of breaker disjunction short circuit current flow, and realizes the generalization of AC and DC arc-control device.
Utility model content
The purpose of this utility model is that the drawback for the prior art, there is provided a kind of slide type Arc Distinguishing Device for Circuit Breakers,
To improve the ability of breaker disjunction short circuit current flow.
Problem described in the utility model is solved with following technical proposals：
A kind of slide type Arc Distinguishing Device for Circuit Breakers, composition include insulation shielding plate, armature, yoke, horizontal sliding bar and pressure
Spring, the yoke are fixed on the side of circuit breaker static contact and less than static contacts and the contact surface of moving contact；The insulation shielding
Plate and armature are located at the opposite side of static contact, insulation shielding plate be fixed on armature and with the moving contact of breaker and static contact it
Between gap it is corresponding；One end of the horizontal sliding bar is fixedly connected with yoke, and the other end revolves after sequentially passing through compression spring and armature
Enter screwed retaining ring.
Above-mentioned slide type Arc Distinguishing Device for Circuit Breakers, the slide bar and compression spring are respectively provided with two, they are symmetricly set on open circuit
The both sides of device static contact.
Above-mentioned slide type Arc Distinguishing Device for Circuit Breakers, the insulation shielding plate are the dust pan shape put upside down, its front end and open circuit
Gap between the moving contact and static contact of device is corresponding, and postnotum is through on slide bar and is fixedly connected with armature.
The insulation shielding plate of the utility model can be rapidly inserted into the moving contact of breaker in breaker disjunction short circuit current flow
In gap between static contact, make the arc extinction between dynamic and static contact, when thus shortening the amplification of arc energy
Between, the short arcing of breaker is realized or without arcing, so as to substantially increase the ability of breaker disjunction short circuit current flow.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is short-circuit instantaneous release and actuating mechanism action initial position；
Fig. 3 is short-circuit instantaneous release and actuating mechanism operating position；
Fig. 4 is the structure diagram of armature (structure of yoke is identical with this)；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is static contact structure schematic diagram；；
Fig. 7 is the left top view of Fig. 6；
Fig. 8 is the structure diagram of insulation shielding plate；
Fig. 9 is the left view of Fig. 8.
Each list of reference numerals is in figure：1st, static contact；2nd, moving contact；3rd, yoke；4th, insulation shielding plate；5th, armature；6th, compression spring；
7th, slide bar；8th, axis pin；9th, short-circuit instantaneous release and actuating mechanism.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
The utility model is in view of the deficiencies of the prior art, there is provided a kind of special insulation shielding arc extinguishing construction, it can be in event
Hinder the moment that short circuit current flow occurs, while short-circuit instantaneous release and actuating mechanism snap action, its dynamic and static contact is not yet
In the full opening of electric arc lag phase, force an insulation shielding plate for being installed on stationary contact cephalic region rapid using electromagnetic driving force
It is inserted between dynamic and static lift one's head, plays the role of rapid arc extinguishing.The utility model is applied in MCCB, ACB, can greatly improve point
The ability of disconnected short circuit current flow and the generalization for realizing AC and DC arc-control device.
The utility model can be used for the breaker of diversified forms, such as omnipotent breaker product.If repulsion structure
Breaker, the metal strip of static contact includes at least one section of flat segments parallel with moving contact, the electric current in flat segments with it is dynamic
Current direction in contact is on the contrary, being produced when the length of flat segments is more than or equal to short circuit current flow in moving contact and static contact makes
The required length of repulsion that dynamic and static contact repels each other out.
Insulation shielding plate 4 is using high intensity, heat safe engineering plastic materials.It can ensure effectively to divide as defined in product standard
The number (most 3 times) of disconnected short circuit current flow.
Referring to Fig. 1-Fig. 9, the utility model uses slide bar type structure, the main yoke for including being arranged in Shell of circuit breaker
3rd, insulation shielding plate 4, armature 5, compression spring 6 and slide bar 7.
Yoke 3 is fixed on the static contact 1 of breaker, and two slide bars 7 are fixed by screws in yoke 3, two compression springs 6
It is attached separately on two slide bars 7, armature 5 and insulation shielding plate 4 are installed on two slide bars 7 after being integrally fixed by screw,
The end of two slide bars 7 is equipped with screwed retaining ring, spacing for being carried out to the assembly of armature 5 and insulation shielding plate 4, prevents the two
Come off from slide bar 7, the assembly of armature 5 and insulation shielding plate 4 can overcome the elastic force of compression spring 6 to stationary contact under external force
First 1,3 one Slideslip of yoke.In circuit failure short circuit current flow, since 1 surrounding of static contact produces very strong electromagnetic field, magnetic
Yoke 3 attracts armature 5 after being magnetized, the assembly of armature 5 and insulation shielding plate 4 overcomes the elastic force of compression spring 6 to static contact 1, yoke 3
Side quick sliding, in the moment that short-circuit instantaneous release and actuating mechanism 9 act, moving contact 2 is turned clockwise with axis pin 8
While dynamic opening, insulation shielding plate 4 is rapidly inserted between moving contact 2 and static contact 1, plays rapid insulation shielding arc extinguishing
Effect, moving contact 2 is the rotation of axis both clockwise direction with axis pin 8 afterwards, and dynamic/static contact is opened completely.After short circuit current flow disappears,
The attraction that armature 5 is subject to disappears therewith, and armature 5 and the assembly of insulation shielding plate 4 restore next time in the elastic force effect of compression spring 6
Position, breaker complete the process of whole disjunction short circuit current flow.
The arc extinguishing when dynamic and static contact is not yet opened completely as auxiliary extinction of arc mechanism of insulation shielding plate 4, and arc-chutes are then
There are good extinguishing remnants arcings after dynamic and static contact is opened completely.
Since the arc-control device of MCCB or ACB uses above technical scheme, following technological progress can be obtained：
1 can greatly improve the ability of product disjunction short circuit current flow；
2. it can achieve the purpose that AC and DC is general；
3. in disjunction failed shorted electric current, the further expansion of arc energy can be limited, so that the short of product can be realized
Arcing or without arcing.
Claims (3)
1. a kind of slide type Arc Distinguishing Device for Circuit Breakers, it is characterized in that, composition includes insulation shielding plate (4), armature (5), yoke
(3), horizontal sliding bar (7) and compression spring (6), the yoke (3) are fixed on the side of circuit breaker static contact (1) and are less than static contact
(1) with the contact surface of moving contact (2)；The insulation shielding plate (4) and armature (5) are located at the opposite side of static contact (1), insulation screen
The gap that shield plate (4) is fixed on armature (5) and between the moving contact (2) and static contact (1) of breaker is corresponding；The water
One end of smooth bar (7) is fixedly connected with yoke (3), and the other end sequentially passes through compression spring (6) and armature (5) and screws in anticreep spiral shell afterwards
It is female.
2. slide type Arc Distinguishing Device for Circuit Breakers according to claim 1, it is characterized in that, the slide bar (7) and compression spring (6) are equal
Two are set, they are symmetricly set on the both sides of circuit breaker static contact (1).
3. slide type Arc Distinguishing Device for Circuit Breakers according to claim 1 or 2, it is characterized in that, the insulation shielding plate (4) is
The dust pan shape put upside down, the gap between its front end and the moving contact (2) and static contact (1) of breaker is corresponding, and postnotum is worn
It is fixedly connected on slide bar (7) and with armature (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721062799.2U CN207303024U (en) | 2017-08-23 | 2017-08-23 | A kind of slide type Arc Distinguishing Device for Circuit Breakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721062799.2U CN207303024U (en) | 2017-08-23 | 2017-08-23 | A kind of slide type Arc Distinguishing Device for Circuit Breakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207303024U true CN207303024U (en) | 2018-05-01 |
Family
ID=62437497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721062799.2U Expired - Fee Related CN207303024U (en) | 2017-08-23 | 2017-08-23 | A kind of slide type Arc Distinguishing Device for Circuit Breakers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207303024U (en) |
Cited By (1)
| 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 |
-
2017
- 2017-08-23 CN CN201721062799.2U patent/CN207303024U/en not_active Expired - Fee Related
Cited By (2)
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 Termination date: 20200823 |