CN207199553U - A kind of shielding arc-control device of electromagnetic force driving - Google Patents
A kind of shielding arc-control device of electromagnetic force driving Download PDFInfo
- Publication number
- CN207199553U CN207199553U CN201721058452.0U CN201721058452U CN207199553U CN 207199553 U CN207199553 U CN 207199553U CN 201721058452 U CN201721058452 U CN 201721058452U CN 207199553 U CN207199553 U CN 207199553U
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- CN
- China
- Prior art keywords
- static contact
- insulation shielding
- breaker
- arc
- contact
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Abstract
A kind of shielding arc-control device of electromagnetic force driving, composition include pedestal, two blocks of insulation shielding plates, two panels armature and torsion spring, and the pedestal is fixed on the static contact of breaker and below the contact surface of static contact and moving contact；Two blocks of insulation shielding plates are located at the static contact both sides of breaker respectively, and the lower end of the two is hinged by jointed shaft and pedestal, and the inside lateral bending in upper end is rolled over and gap between the moving contact and static contact of breaker is corresponding；Two panels armature is separately fixed on the medial surface of two blocks of insulation shielding plates；On the jointed shaft of insulation shielding plate lower end, the both ends of torsion spring are press respectively against on the medial surface of two blocks of insulation shielding plates the torsion spring set.Insulation shielding plate of the present utility model can be clamped rapidly in breaker disjunction short circuit current in the gap between dynamic and static contact, make arc extinction, 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
When the utility model is related to one kind can effectively prevent breaker disjunction short circuit current, produced between its dynamic and static contact
The device of larger electric arc, belong to emergency protective device technical field.
Background technology
Moulded case circuit breaker (MCCB) is the industrial important electric elements with civilian low-voltage distribution apparatus, apply more
In the end of low-voltage distribution system.At present, it is caused when domestic and international MCCB uses arc-chutes technology to disjunction short circuit current
HTHP electric arc is cooled down and extinguished, and the arc quenching principle of this technology is：During disjunction short circuit current, treat dynamic and static contact it
Between produce electric arc and elongate to certain length, energy accordingly amplification after, using magnetic field electro-dynamic force or other means drive high energy electricity
Arc enters arc-chutes, makes to extinguish under the cooling effect of its metal grid in arc-chutes.The arc quenching effect of this method is by all
Such as arc-chutes material, contact cut-off the influence of speed, clearance between open contacts, contact material factor, especially for single-break structure
Breaker, the ability of its disjunction short circuit current is poor, be usually no more than exchange 400V, 30~50kA, if improving this again
Performance parameter, manufacturing cost will greatly improve, 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 MCB disjunction short circuit currents, and realize the generalization of AC and DC arc-control device.
Utility model content
The purpose of this utility model is the drawback for prior art, there is provided a kind of shielding interrupter cartridge of electromagnetic force driving
Put, to improve the ability of breaker disjunction short circuit current.
Problem described in the utility model is realized with following technical proposals：
A kind of shielding arc-control device of electromagnetic force driving, composition include pedestal, two blocks of insulation shielding plates, two panels armature and
Torsion spring, the pedestal are fixed on the static contact of breaker and below the contact surfaces of static contact and moving contact；Two pieces of insulation
Barricade is located at the static contact both sides of breaker respectively, and the lower end of the two is hinged by jointed shaft and pedestal, the inside lateral bending in upper end
Roll over and gap between the moving contact and static contact of breaker is corresponding；Two panels armature is separately fixed at two blocks of insulation shielding plates
Medial surface on；For the torsion spring set on the jointed shaft of insulation shielding plate lower end, the both ends of torsion spring are press respectively against two pieces of insulation
On the medial surface of barricade.
The shielding arc-control device of above-mentioned electromagnetic force driving, the upper end surface structure of two blocks of insulation shielding plates is different, one of
There is the groove opened up along the end face length direction in the middle part of the upper surface of insulation shielding plate, on the upper surface of another block of insulation shielding plate
Provided with the boss with the groove match.
Insulation shielding plate of the present utility model can be clamped rapidly into moving contact and static contact in breaker disjunction short circuit current
Between gap in, make the arc extinction between dynamic and static contact, thus shorten the amplification time of arc energy, realize
The short arcing of breaker 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 utility model in dynamic and static contact closure view；
Fig. 2 is the A direction views in Fig. 1；
Fig. 3 is that the utility model denounces open state schematic diagram in dynamic and static contact；
Fig. 4 is the B direction views in Fig. 3；
Fig. 5 is the utility model in dynamic and static contact off-state schematic diagram；
Fig. 6 is the C direction views in Fig. 5；
Fig. 7 is the structural representation of static contact；
Fig. 8 is Fig. 7 top view；
Fig. 9 is the structural representation of pedestal；
Figure 10 is Fig. 4 partial enlarged drawing；
Figure 11 is the structural representation of insulated left side barricade；
Figure 12 is Figure 11 left view；
Figure 13 is the structural representation of side insulation right barricade；
Figure 14 is Figure 13 left view.
Each list of reference numerals is in figure：1st, static contact；2nd, moving contact；3rd, pedestal；4th, insulation shielding plate；5th, torsion spring；6th, it is hinged
Axle；7th, armature；8th, bearing 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 mounted in an insulation arc-control device driven by electromagnetic force on circuit breaker static contact, works as line
When short-circuit current occurs in road, (without the open circuit of repulsion structure while the dynamic and static contact of breaker is opened by electrodynamic repulsion force reprimand
While device can also be that short-circuit instantaneous release action is opened), the shielding arc-control device of clamp type structure is under electromagnetic force driving
Between clamping (insertion) dynamic and static contact rapidly, static contact surface portion is all shielded, plays a part of rapid arc extinguishing.
Referring to Fig. 1-Figure 14, the utility model mainly includes pedestal 3, insulation shielding plate 4, armature 7, torsion spring 5 and jointed shaft
6。
The utility model uses clamp type structure, and two blocks of insulation shielding plates 4 are separately mounted to the both sides of static contact 2, two panels rank
Iron 7 is separately mounted to the inner side of two insulation shielding plates 4, and the insulation shielding plate 4 with armature 7 is be hinged by jointed shaft 6 and torsion spring 5
In on pedestal 3, pedestal 3 is arranged on static contact 1 and below the contact surface of static contact and moving contact.Limited location on pedestal 3,
The shielding arc-control device of the angle, usually clamp type structure opened for limiting insulation shielding plate 4 and armature 7 under the effect of torsion spring 5
For open mode.When short-circuit current occurs in circuit, due to (the arrow in figure opposite with the sense of current of moving contact 2 of static contact 1
For the sense of current), therefore produce electrodynamic repulsion force and open static contact 1 and the reprimand of moving contact 2, simultaneously because the forceful electric power around static contact 1
Under magnetic fields, both sides armature 7 mutually produces very big suction, and two blocks of insulation shielding plates 4 overcome torsion spring under the drive of armature 7
5 elastic force is drawn close to the center of static contact 1 simultaneously, and (without repulsion structure while dynamic and static contact is opened by electrodynamic repulsion force reprimand
While breaker can also be that short-circuit instantaneous release action is opened), clamped rapidly into (insertion) dynamic and static contact simultaneously from both sides
Between, static contact surface portion is all shielded, is producing the initial stage of electric arc so as to reach, i.e. the electric arc lag phase just puts out rapidly
Go out the purpose of electric arc.The short-circuit instantaneous release of breaker and actuating mechanism 9 act afterwards, so that MCCB completes disjunction
Journey.Because short circuit current is cut off, strong-electromagnetic field disappears, and shields arc-control device homing.
The utility model can be used for the breaker of diversified forms, such as miniature circuit breaker product.Static contact 1 and moving contact 2
Between use rotating hinge chain type repulsion structure, the bonding jumper of static contact comprises at least one section of flat segments parallel with moving contact,
The sense of current in electric current and moving contact in flat segments is on the contrary, the length of flat segments is more than or equal in moving contact and static contact flows
The length required for the repulsion for making dynamic and static contact repel each other out is produced when crossing short circuit current.When short trouble occurs, in the opposite direction
Short circuit current when flowing through static contact flat segments and moving contact, repulsion is produced between static contact and moving contact so that moving contact 2
It is that axle is denounceed out rotationally clockwise with bearing pin 8.Static contact can also be the reprimand without the flat segments parallel with moving contact
Power structure.
Due to that in the case of normal current, will not produce strong-electromagnetic field around conductor, this shielding arc-control device will not also move
Make.Only when short trouble occurs in distribution line, strong-electromagnetic field caused by its sufficiently large short circuit current could drive this
Arc-control device quick acting is shielded, so during normal use (separating brake, combined floodgate), the present apparatus is failure to actuate.
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.
Because MCCB or MCB 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 (2)
1. a kind of shielding arc-control device of electromagnetic force driving, it is characterized in that, composition includes pedestal (3), two blocks of insulation shielding plates
(4), two panels armature (7) and torsion spring (5), the pedestal (3) are fixed on the static contact (1) of breaker and are located at static contact (1)
Below the contact surface of moving contact (2)；Two pieces of insulation shielding plates (4) are located at static contact (1) both sides of breaker respectively, the two
Lower end is be hinged by jointed shaft (6) and pedestal (3), the inside lateral bending folding in upper end and with the moving contact (2) and static contact (1) of breaker
Between gap it is corresponding；Two panels armature (7) is separately fixed on the medial surface of two pieces of insulation shielding plates (4)；The torsion spring (5)
It is sleeved on the jointed shaft (6) of insulation shielding plate (4) lower end, the both ends of torsion spring (5) are press respectively against two pieces of insulation shielding plates (4)
On medial surface.
2. the shielding arc-control device of electromagnetic force driving according to claim 1, it is characterized in that, two pieces of insulation shielding plates (4)
Upper end surface structure it is different, have in the middle part of the upper surface of one of insulation shielding plate (4) opened up along the end face length direction it is recessed
Groove, the upper surface of another piece of insulation shielding plate (4) are provided with the boss with the groove match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721058452.0U CN207199553U (en) | 2017-08-23 | 2017-08-23 | A kind of shielding arc-control device of electromagnetic force driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721058452.0U CN207199553U (en) | 2017-08-23 | 2017-08-23 | A kind of shielding arc-control device of electromagnetic force driving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207199553U true CN207199553U (en) | 2018-04-06 |
Family
ID=61794557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721058452.0U Expired - Fee Related CN207199553U (en) | 2017-08-23 | 2017-08-23 | A kind of shielding arc-control device of electromagnetic force driving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207199553U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108807044A (en) * | 2018-06-08 | 2018-11-13 | 宁波金宸科技有限公司 | A kind of grid arc-control device and its relay |
| CN113851358A (en) * | 2021-08-04 | 2021-12-28 | 谢昕 | Arc isolation device with forced arc isolation function applied to circuit breaker |
-
2017
- 2017-08-23 CN CN201721058452.0U patent/CN207199553U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108807044A (en) * | 2018-06-08 | 2018-11-13 | 宁波金宸科技有限公司 | A kind of grid arc-control device and its relay |
| CN113851358A (en) * | 2021-08-04 | 2021-12-28 | 谢昕 | Arc isolation device with forced arc isolation function applied to circuit breaker |
| CN113851358B (en) * | 2021-08-04 | 2023-09-15 | 浙江创奇电气有限公司 | Arc isolation device with forced arc isolation function applied to 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 |
Granted publication date: 20180406 Termination date: 20190823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |