CN207303020U - A kind of high breaking moulded case circuit breaker arc-control device - Google Patents
A kind of high breaking moulded case circuit breaker arc-control device Download PDFInfo
- Publication number
- CN207303020U CN207303020U CN201721057660.9U CN201721057660U CN207303020U CN 207303020 U CN207303020 U CN 207303020U CN 201721057660 U CN201721057660 U CN 201721057660U CN 207303020 U CN207303020 U CN 207303020U
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- CN
- China
- Prior art keywords
- static contact
- shielding plate
- support base
- yoke
- armature
- 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.)
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of high breaking moulded case circuit breaker arc-control device, composition include yoke, armature, insulation shielding plate, swing rod and support base, and the yoke is fixed on the static contact of breaker and positioned at the lower section of static contact and moving contact contact surface；The support base is fixed on static contact and positioned at the lower section of yoke；The insulation shielding plate is located at the side of static contact and gap between static contact and moving contact is corresponding；The top and bottom of the swing rod and armature are rotatablely connected with insulation shielding plate and support base respectively, and swing rod, armature, insulation shielding plate and support base form four-bar linkage structure, and torsional spring is equipped between armature and support base.In the gap that the insulation shielding plate of the utility model can be rapidly inserted between moving contact 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
When the utility model is related to one kind can effectively prevent breaker disjunction short circuit current flow, produced between its dynamic and static contact
The device of larger electric arc, belongs to emergency protective device technical 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, to the overload and short trouble of distribution line more
Protected.Wherein short trouble protection is its most important function, and the short circuit current flow of circuit is very big during due to short trouble,
Breaker can produce the very big plasma arc of energy in disjunction short circuit current flow between its dynamic and static contact (electric arc is conductive
), arc extinction, breaker quickly only could be completed into the task of disjunction short circuit current flow by some technical measures.
At present, caused high temperature and high pressure electrical when domestic and international MCCB, ACB use arc-chutes technology to disjunction short circuit current flow
Arc is cooled down and extinguished, and the arc quenching principle of this technology is：During disjunction short circuit current flow, treat to produce electric arc between dynamic and static contact
And elongate to after certain length, energy accordingly amplification, arc extinguishing is entered using magnetic field electro-dynamic force or other means driving high energy arc
Room, makes to extinguish under the cooling effect of its metal grid in arc-chutes.The arc quenching effect of this method is subject to such as arc-chutes material
Material, contact cut-off the influence of the factors such as speed, clearance between open contacts, contact material, especially for the MCCB of single-break structure, its point
The ability of disconnected short circuit current flow is poor, is usually no more than exchange 400V, 30~50kA, if improving this performance parameter again, system
Cause to 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 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
A kind of the purpose of this utility model is that drawback for the prior art, there is provided high breaking moulded case circuit breaker
Arc-control device, to improve the ability of breaker disjunction short circuit current flow.
Problem described in the utility model is realized with following technical proposals：
A kind of high breaking moulded case circuit breaker arc-control device, composition include yoke, armature, insulation shielding plate, pendulum
Bar and support base, the yoke are fixed on the static contact of breaker and positioned at the lower section of static contact and moving contact contact surface；Institute
Support base is stated to be fixed on static contact and positioned at the lower section of yoke；The insulation shielding plate is located at the side of static contact and and stationary contact
Head is corresponding with the gap between moving contact；The top and bottom of the swing rod and armature respectively with insulation shielding plate and support base
Rotation connection, swing rod, armature, insulation shielding plate and support base form four-bar linkage structure, are equipped with and turn round between armature and support base
Spring.
Above-mentioned high breaking moulded case circuit breaker arc-control device, is equipped with exhausted between the yoke and the static contact of breaker
Edge gasket.
Above-mentioned high breaking moulded case circuit breaker arc-control device, the both sides of the insulation shielding plate are bent downward, bending
One end of partial remote yoke is rotatablely connected with armature, is rotatablely connected close to one end of yoke and swing rod.
Above-mentioned high breaking moulded case circuit breaker arc-control device, the swing rod set two, the two is symmetrically mounted on absolutely
The both sides of edge barricade and support base.
The insulation shielding plate of the utility model can be rapidly inserted into moving contact and static contact in breaker disjunction short circuit current flow
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 flow.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is that contact reprimand spreads its tail and covers view；
Fig. 3 is the structure diagram of static contact；
Fig. 4 is the structure diagram of insulation shielding plate；
Fig. 5 is the left view of Fig. 4；
Fig. 6 is the structure diagram of swing rod；
Fig. 7 is the left view of Fig. 6；
Fig. 8 is the structure diagram of armature；
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, torsional spring；
7th, swing rod；8th, support base；9th, insulation spacer；10th, short-circuit instantaneous release and actuating mechanism；A, axis pin.
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 static contact, occurs in circuit
During short circuit current flow, (switch of no repulsion structure is in short circuit to the dynamic and static contact of its breaker while being opened by electrodynamic repulsion force reprimand
While instantaneous release action is opened), the insulation arc-control device of four-bar linkage structure acts under electromagnetic drive effect, it insulate
Barricade is rapidly inserted between dynamic and static contact, plays the role of rapid arc extinguishing.
Referring to Fig. 1-Fig. 9, the utility model mainly includes yoke 3, insulation shielding plate 4, armature 5, torsional spring 6, swing rod 7, branch
Seat 8 and insulation spacer 9 are supportted, wherein, insulation shielding plate 4, armature 5, swing rod 7 and support base 8 form a quadric chain, support
Seat 8 is fixedly connected with static contact 1, and swing rod 7 is articulated between support base 8 and insulation shielding plate 4 by axis pin, and armature 5 is equally
Be articulated with by axis pin between support base 8 and insulation shielding plate 4, insulation shielding plate 4 can be inserted into breaker dynamic and static contact it
Between.Yoke 3 is rectangular shape, in static contact, position that the upper and lower and side of yoke 3 is contacted with static contact
Completely cut off with insulation spacer 9, yoke 3 can attract armature 5 when there is short circuit current flow, usually also function to the effect of support static contact.
Under normal circumstances, since the effect armature 5 of torsional spring 6 is in the position away from yoke 3, insulation arc-control device is in open mode.
But when there is short-circuit current in circuit, due to static contact 1 flat segments with 2 current direction of moving contact on the contrary, therefore producing
Electrodynamic repulsion force makes static contact 1 be opened with the reprimand of moving contact 2, simultaneously because yoke 3 is short-circuited after the magnetic field magnetization of electric current generation to armature 5
Very big suction is produced, armature 5 overcomes the elastic force of torsional spring 6 to produce rotation, so as to drive the insulation arc-control device of four-bar linkage structure
Action, makes its insulation shielding plate 4 (or be short-circuited what instantaneous release and actuating mechanism were opened while dynamic and static contact reprimand is opened
It is rapidly inserted at the same time) between moving contact 2 and static contact 1, plays the role of rapid insulation shielding arc extinguishing.The short-circuit wink of Simultaneous Switching
When buckle releaser and actuating mechanism 10 (maturation design) action, MCCB is completed breaking course.In torsional spring 6 after short circuit current flow elimination
Lower 4 homing of insulation shielding plate of effect.
If the design of repulsion structure, the metal strip of static contact include at least one section it is parallel with moving contact straight
Section, the current direction in electric current and moving contact in flat segments is on the contrary, the length of flat segments is more than or equal to moving contact and static contact
The repulsion required length for making dynamic and static contact repel each other out is produced during middle short circuit current flow.When short trouble occurs, direction
Opposite short circuit current flow flows through static contact flat segments and moving contact, at this time, repulsion is produced between static contact and moving contact so that
Moving contact 2 is denounceed out rotationally clockwise around axis pin A.Static contact can also not have the flat segments parallel with moving contact
Repulsion structure.
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.
Claims (4)
1. a kind of high breaking moulded case circuit breaker arc-control device, it is characterized in that, composition include yoke (3), armature (5),
Insulation shielding plate (4), swing rod (7) and support base (8), the yoke (3) are fixed on the static contact (1) of breaker and positioned at quiet
The lower section of contact (1) and moving contact (2) contact surface；The support base (8) is fixed on static contact (1) and positioned at yoke (3)
Lower section；The insulation shielding plate (4) is located at the side of static contact (1) and the gap phase between static contact (1) and moving contact (2)
It is corresponding；The top and bottom of the swing rod (7) and yoke (3) are rotatablely connected with insulation shielding plate (4) and support base (8) respectively,
Swing rod (7), armature (5), insulation shielding plate (4) and support base (8) form four-bar linkage structure, armature (5) and support base (8) it
Between be equipped with torsional spring (6).
2. high breaking moulded case circuit breaker arc-control device according to claim 1, it is characterized in that, the yoke (3)
Insulation spacer (9) is equipped between the static contact (1) of breaker.
3. high breaking moulded case circuit breaker arc-control device according to claim 1 or 2, it is characterized in that, the insulation
The both sides of barricade (4) are bent downward, and one end and the armature (5) of the remote yoke (3) of bending part are rotatablely connected, close to yoke
(3) one end is rotatablely connected with swing rod (7).
4. high breaking moulded case circuit breaker arc-control device according to claim 3, it is characterized in that, the swing rod (7)
Two are set, the two is symmetrically mounted on the both sides of insulation shielding plate (4) and support base (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721057660.9U CN207303020U (en) | 2017-08-23 | 2017-08-23 | A kind of high breaking moulded case circuit breaker arc-control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721057660.9U CN207303020U (en) | 2017-08-23 | 2017-08-23 | A kind of high breaking moulded case circuit breaker arc-control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207303020U true CN207303020U (en) | 2018-05-01 |
Family
ID=62445268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721057660.9U Expired - Fee Related CN207303020U (en) | 2017-08-23 | 2017-08-23 | A kind of high breaking moulded case circuit breaker arc-control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207303020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342196A (en) * | 2017-08-23 | 2017-11-10 | 河北宝凯电气股份有限公司 | A kind of high breaking moulded case circuit breaker arc-control device |
-
2017
- 2017-08-23 CN CN201721057660.9U patent/CN207303020U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342196A (en) * | 2017-08-23 | 2017-11-10 | 河北宝凯电气股份有限公司 | A kind of high breaking moulded case circuit breaker arc-control device |
| CN107342196B (en) * | 2017-08-23 | 2020-06-09 | 河北宝凯电气股份有限公司 | Arc extinguishing device of high-breaking plastic casing 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 |