CN107342197A - 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
- CN107342197A CN107342197A CN201710727648.2A CN201710727648A CN107342197A CN 107342197 A CN107342197 A CN 107342197A CN 201710727648 A CN201710727648 A CN 201710727648A CN 107342197 A CN107342197 A CN 107342197A
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/32—Insulating body insertable between contacts
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of slide type Arc Distinguishing Device for Circuit Breakers; belong to emergency protective device technical field, for improving the ability of breaker disjunction short circuit current, its technical scheme is; composition includes insulation shielding plate, armature, yoke, slide bar and stage clip, 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 slide bar is fixedly connected with yoke, and the other end screws in screwed retaining ring after sequentially passing through stage clip and armature.In the gap that the insulation shielding plate of the present invention can be rapidly inserted between the moving contact of breaker and static contact in breaker disjunction short circuit current, 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.
Description
Technical field
It can effectively prevent from producing during breaker disjunction short circuit current, between its dynamic and static contact the present invention relates to one kind larger
The device of electric arc, belong 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 HTHP electric arc is cooled down and extinguished when arc chamber technology is to disjunction short circuit current, the arc quenching principle of this technology
It is：During disjunction short circuit current, 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 by 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 is poor, is usually no more than exchange
400V, ACB：50~80kA, MCCB：30~50kA, if improving this performance parameter again, manufacturing cost will greatly improve.And
And direct-current short circuit electric current is less susceptible to disjunction due to no zero passage process.
With the raising that the construction and development and people of power network are required 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, and realize the generalization of AC and DC arc-control device.
The content of the invention
It is an object of the invention to the drawback for prior art, there is provided a kind of slide type Arc Distinguishing Device for Circuit Breakers, to carry
The ability of high breaker disjunction short circuit current.
Problem of the present invention is that solved with following technical proposals：
A kind of slide type Arc Distinguishing Device for Circuit Breakers, composition include insulation shielding plate, armature, yoke, slide bar and stage clip, institute
State yoke and be fixed on the side of circuit breaker static contact and less than static contact and the contact surface of moving contact；The insulation shielding plate and rank
Iron is located at the opposite side of static contact, insulation shielding plate be fixed on armature and between the moving contact and static contact of breaker between
Gap is corresponding；One end of the slide bar is fixedly connected with yoke, and the other end screws in screwed retaining ring after sequentially passing through stage clip and armature.
Above-mentioned slide type Arc Distinguishing Device for Circuit Breakers, the slide bar and stage clip are respectively provided with two, and 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 present invention can be rapidly inserted into breaker disjunction short circuit current the moving contact of breaker with it is quiet
In gap between contact, make the arc extinction between dynamic and static contact, thus shorten the amplification time of arc energy, it is real
The short arcing of breaker is showed or without arcing, so as to substantially increase the ability of breaker disjunction short circuit current.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
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 structural representation of armature (structure of yoke is identical with this)；
Fig. 5 is Fig. 4 top view；
Fig. 6 is static contact structure schematic diagram；；
Fig. 7 is Fig. 6 left top view；
Fig. 8 is the structural representation of insulation shielding plate；
Fig. 9 is Fig. 8 left view.
Each list of reference numerals is in figure：1st, static contact；2nd, moving contact；3rd, yoke；4th, insulation shielding plate；5th, armature；6th, stage clip；
7th, slide bar；8th, bearing pin；9th, short-circuit instantaneous release and actuating mechanism.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
In view of the deficiencies of the prior art, the present invention provides a kind of special insulation shielding arc extinguishing construction, it can be short in failure
The moment that road electric current occurs, while short-circuit instantaneous release and actuating mechanism snap action, its dynamic and static contact is not yet complete
In the electric arc lag phase of opening, an insulation shielding plate for being arranged on stationary contact cephalic region is forced to be rapidly inserted into using electromagnetic actuation force
It is dynamic and static lift one's head between, play a part of rapid arc extinguishing.The present invention is applied in MCCB, ACB, can greatly improve disjunction short circuit electricity
The ability of stream and the generalization for realizing AC and DC arc-control device.
The present invention can be used for the breaker of diversified forms, such as omnipotent breaker product.If repulsion structure is disconnected
Road device, the bonding jumper of static contact comprise at least one section of flat segments parallel with moving contact, electric current and moving contact in flat segments
In the sense of current on the contrary, produced when the length of flat segments is more than or equal to short circuit current flow in moving contact and static contact make,
Length required for the repulsion that static contact repels each other out.
Insulation shielding plate 4 is using high intensity, resistant to elevated temperatures engineering plastic materials.It can ensure effectively to divide as defined in product standard
The number (most 3 times) of disconnected short circuit current.
Referring to Fig. 1-Fig. 9, the present invention use slide bar type structure, the main yoke 3 for including being arranged in Shell of circuit breaker, exhausted
Edge barricade 4, armature 5, stage clip 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 stage clips 6
It is attached separately on two slide bars 7, armature 5 and insulation shielding plate 4 are arranged on two slide bars 7 after being integrally fixed by screw,
The end of two slide bars 7 is provided 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 stage clip 6 to stationary contact under external force
First 1, the Slideslip of yoke 3 one.In circuit failure short circuit current, because the surrounding of static contact 1 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 stage clip 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 bearing 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 bearing pin 8 afterwards, and dynamic/static contact is opened completely.After short circuit current disappears,
The attraction that armature 5 is subject to disappears therewith, and the assembly of armature 5 and insulation shielding plate 4 restores next time in the elastic force effect of stage clip 6
Position, breaker complete the process of whole disjunction short circuit current.
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.
Because MCCB or ACB arc-control device uses above technical scheme, following technological progress can be obtained：
1 can greatly improve the ability of product disjunction short circuit current；
2. the general purpose of AC and DC can be reached；
3. in disjunction failed shorted electric current, the further expansion of arc energy can be limited, so as to which 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), slide bar (7) and stage clip (6), the yoke (3) be fixed on the side of circuit breaker static contact (1) and 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 shielding plate
(4) gap being fixed on armature (5) and between the moving contact (2) and static contact (1) of breaker is corresponding；The slide bar
(7) one end is fixedly connected with yoke (3), and the other end sequentially passes through stage clip (6) and armature (5) screws in screwed retaining ring afterwards.
2. slide type Arc Distinguishing Device for Circuit Breakers according to claim 1, it is characterized in that, the slide bar (7) and stage clip (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 |
|---|---|---|---|
| CN201710727648.2A CN107342197B (en) | 2017-08-23 | 2017-08-23 | Arc extinguishing device of sliding plate type circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710727648.2A CN107342197B (en) | 2017-08-23 | 2017-08-23 | Arc extinguishing device of sliding plate type circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107342197A true CN107342197A (en) | 2017-11-10 |
| CN107342197B CN107342197B (en) | 2020-06-09 |
Family
ID=60215257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710727648.2A Active CN107342197B (en) | 2017-08-23 | 2017-08-23 | Arc extinguishing device of sliding plate type circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107342197B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108074757A (en) * | 2018-01-17 | 2018-05-25 | 安徽中骄智能科技有限公司 | A kind of electrical contact passage adjusted based on rotation and arc extinguishing structure device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000834A (en) * | 2006-12-22 | 2007-07-18 | 西安交通大学 | Current-limiting arc-control device of medium-voltage large current DC circuit breaker |
| CN201084657Y (en) * | 2007-08-04 | 2008-07-09 | 漳州马可电器科技有限公司 | A breaker with the arc-breaking/-quenching device |
| CN102486982A (en) * | 2010-12-03 | 2012-06-06 | 北京人民电器厂有限公司 | Breaker with forced flash barrier device |
| CN202948872U (en) * | 2012-09-28 | 2013-05-22 | 江苏丹通电气有限公司 | Vacuum circuit breaker |
| CN204344988U (en) * | 2014-12-30 | 2015-05-20 | 武汉浩宏科技有限公司 | A kind of electromagnetic clamp pipe valve applied in ultrasonic clear stone equipment |
| CN206116240U (en) * | 2016-09-30 | 2017-04-19 | 宁夏凯晨电气集团有限公司 | Isolating cabinet and circuit breaker cabinet interlock |
| CN207303024U (en) * | 2017-08-23 | 2018-05-01 | 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 CN201710727648.2A patent/CN107342197B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000834A (en) * | 2006-12-22 | 2007-07-18 | 西安交通大学 | Current-limiting arc-control device of medium-voltage large current DC circuit breaker |
| CN201084657Y (en) * | 2007-08-04 | 2008-07-09 | 漳州马可电器科技有限公司 | A breaker with the arc-breaking/-quenching device |
| CN102486982A (en) * | 2010-12-03 | 2012-06-06 | 北京人民电器厂有限公司 | Breaker with forced flash barrier device |
| CN202948872U (en) * | 2012-09-28 | 2013-05-22 | 江苏丹通电气有限公司 | Vacuum circuit breaker |
| CN204344988U (en) * | 2014-12-30 | 2015-05-20 | 武汉浩宏科技有限公司 | A kind of electromagnetic clamp pipe valve applied in ultrasonic clear stone equipment |
| CN206116240U (en) * | 2016-09-30 | 2017-04-19 | 宁夏凯晨电气集团有限公司 | Isolating cabinet and circuit breaker cabinet interlock |
| CN207303024U (en) * | 2017-08-23 | 2018-05-01 | 河北宝凯电气股份有限公司 | A kind of slide type Arc Distinguishing Device for Circuit Breakers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108074757A (en) * | 2018-01-17 | 2018-05-25 | 安徽中骄智能科技有限公司 | A kind of electrical contact passage adjusted based on rotation and arc extinguishing structure device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107342197B (en) | 2020-06-09 |
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