CN206947283U - A kind of movable contact system of frame circuit breaker - Google Patents
A kind of movable contact system of frame circuit breaker Download PDFInfo
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- CN206947283U CN206947283U CN201720571220.9U CN201720571220U CN206947283U CN 206947283 U CN206947283 U CN 206947283U CN 201720571220 U CN201720571220 U CN 201720571220U CN 206947283 U CN206947283 U CN 206947283U
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- striking piece
- arc striking
- moving contact
- upper plate
- dynamic
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Abstract
A kind of movable contact system of frame circuit breaker is the utility model is related to, the system includes upper plate, lower shoe, static contact, moving contact, operating mechanism, and upper plate and lower shoe are fixed on breaker body, for support and spacing moving contact and static contact；Moving contact includes moving conductive row, counterpart, rotating shaft, moving contact body, dynamic arc striking piece, connector, the tactile son of division, plastics cage；Dynamic arc striking piece is fixed on upper plate, and one end of connector is fixed on moving conductive row, the right-hand member of the dynamic arc striking piece of other end connection.Compared with prior art, the utility model is directly connected to arc striking piece and moving contact, substantially increase electric arc and divide the speed touched son and be transferred to dynamic arc striking piece from moving contact, so as to reduce electric arc the burning time on son is touched in division, accelerate the process that electric arc enters arc-chutes, the break performance of breaker can be improved.
Description
Technical field
Breaker technical field is the utility model is related to, more particularly, to a kind of movable contact system of frame circuit breaker.
Background technology
With the high speed development of national economy, net capacity can also rise always, therefore improve the Breaking capacity of breaker
It is an eternal target.Existing breaker is when cut-offfing short circuit current, often due to the pitting of contact of moving contact is serious and electric
Arc sufficiently can not enter arc-chutes grid in time and limit the Breaking capacity of breaker.It is well known that cut-offfing short-circuit electricity
During stream, after the dynamic/static contact separation of breaker, electric arc can be produced between movable contact and stationary contact, electric arc is in movable contact and stationary contact
Residence time is longer on point, and pitting of contact is more serious.Therefore, electric arc is allowed to leave sound contact as early as possible, into arc extinguishing grid pieces
It is the target that industry is pursued.In low-voltage circuit breaker, promoting the power of arc motion has two kinds, and one kind is electromagnetic force, and another kind is
Airflow thrust, wherein electromagnetic force are Lorentz forces caused by electric current flowing, and the power can be such that electric arc is moved to arc extinguishing grid pieces；Air-flow
Thrust is due to the gas rapid expansion of proximate contacts after producing electric arc, while under high temperature action, the aerogenesis material of proximate contacts
Expect a large amount of gases of abrupt release, air-flow sprays rapidly to the gas outlet of arc-chutes, so as to promote electric arc to be moved to arc extinguishing grid pieces.
The utility model is greatly improved the promotion effect of electromagnetic force and aerodynamic force to electric arc, electric arc is entered dynamic arc striking piece early and is filled
That divides enters arc extinguishing grid pieces.
As is known in the industry, quiet arc striking piece is connected with existing breaker, on static contact, in electromagnetic force and airflow thrust
Under effect, electric arc quickly can enter arc striking piece in meditation from static contact, so as to reduce the ablation to static contact；Because moving contact is
Moving component, never good scheme the dynamic arc striking piece for being connected with moving contact or being in contact is set, in known contact knot
In structure, dynamic arc striking piece is arranged in arc-chutes, and dynamic arc striking piece and moving contact division has certain interval, an about 5mm left sides between touching son
The right side, electric arc, which is transferred to from moving contact on dynamic arc striking piece, to be needed to be only possible to complete to shift by the breakdown of this air gap, and this mistake
Often the time is longer for journey, it is also possible to occurs repeatedly, so that electric arc divides the overlong time for touching ablation on son in moving contact, moves and touch
Point scaling loss is serious, leverages the connecting-disconnecting function and open and close times of breaker.
The content of the invention
The purpose of this utility model is exactly to provide a kind of dynamic arc striking piece the defects of overcoming above-mentioned prior art to exist
The frame circuit breaker movable contact system being directly connected to moving contact, substantially increase electric arc from moving contact divide touch son be transferred to it is dynamic
The speed of arc striking piece.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of movable contact system of frame circuit breaker, the system include upper plate, lower shoe, static contact, moving contact, operation
Mechanism, described upper plate and lower shoe are fixed on breaker body, for support and spacing moving contact and static contact；It is described
Moving contact include moving conductive row, sub, plastic housing is touched in counterpart, rotating shaft, moving contact body, dynamic arc striking piece, connector, division
Frame；The dynamic arc striking piece is fixed on upper plate, and one end of the connector is fixed on moving conductive row, and other end connection is dynamic to draw
The right-hand member of arcs.
The right part both sides of the dynamic arc striking piece are respectively equipped with the second protrusion perpendicular to its own face, and the connector is disconnected
Symmetrical two are provided with each cavity of road device, the two connectors are respectively attached to upper plate on two sides in cavity,
Connector is connected by the second protrusion of the second bolt and dynamic arc striking piece.
The upper plate side is provided with the first groove and the second groove, and the first recessed poor shape is left with dynamic arc striking piece
The side in portion is consistent, and the side of dynamic arc striking piece left part has the first protrusion to insert in the first groove so as to consolidate to dynamic arc striking piece
It is fixed, while the left part of dynamic arc striking piece is bolted on upper plate also by first, the second recessed poor shape and connector
Left end side be consistent, the connector left end is bolted in the second groove by second.
The counterpart is fixed on upper plate, and the moving conductive row is fixed on counterpart, and son and modeling are touched in the division
Shell cage is fixed on moving contact body, and the moving contact body is connected by rotating shaft with counterpart, and moving contact body can be around
Axis of rotation.
The static contact includes quiet busbar and quiet arc striking piece, and the quiet busbar and quiet arc striking piece are fixed on lower shoe
On.
It is connected with the right side of the connector with moving conductive mining.
The oriented upper left bending part of low order end of the dynamic arc striking piece.
Compared with prior art, the utility model has advantages below：Dynamic arc striking piece is arranged straight by connector and moving conductive
Connect connected, make the potential of arc striking piece identical with the potential of moving contact, when contact is opened and produces electric arc, because connector can
Conducting electric current, electric arc can be quickly transferred on dynamic arc striking piece, touched so as to reduce the dynamic arc striking piece of electric arc needs breakdown and division
The process that can be just transferred to after the air gap between son on dynamic arc striking piece, electric arc is shortened when the burning on son is touched in division
Between, the process that electric arc enters arc-chutes is accelerated, improves the break performance of breaker.
Brief description of the drawings
Structure chart when Fig. 1 is the utility model movable contact system gate-dividing state；
Fig. 2 is the utility model movable contact system upward view；
Fig. 3 is that the utility model movable contact system moves arc striking piece and connector connection diagram；
Fig. 4 is that the utility model movable contact system moves arc striking piece schematic diagram；
Fig. 5 is the utility model movable contact system connector schematic diagram；
Fig. 6 is the utility model movable contact system upper plate groove schematic diagram.
Label in figure：1 is upper plate, and 2 be lower shoe, and 3 be quiet arc striking piece, and 4 be quiet busbar, and 5 be that moving conductive is arranged, and 6 are
Counterpart, 7 be rotating shaft, and 8 be moving contact body, and 9 be plastics cage, and 10 touch son for division, and 11 be dynamic arc striking piece, and 12 be connection
Part, 13 be the first bolt, and 14 be the second bolt, and 15 be the 3rd bolt, and 101 be the first groove, and 102 be the second groove, and 1101 are
First protrusion, 1102 be the second protrusion, and 1103 be bending part, and 1201 be connector left end.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the utility model
Implemented premised on technical scheme, give detailed embodiment and specific operating process, but guarantor of the present utility model
Shield scope is not limited to following embodiments.
A kind of movable contact system of frame circuit breaker, the system include upper plate 1, lower shoe 2, static contact, moving contact, behaviour
Make mechanism, upper plate 1 and lower shoe 2 are fixed on breaker body, for support and spacing moving contact and static contact.Static contact
Including quiet busbar 4 and quiet arc striking piece 3, quiet busbar 4 and quiet arc striking piece 3 are fixed on lower shoe 2.Moving contact includes moving conductive
Son 10, plastics cage 9 are touched in row 5, counterpart 6, rotating shaft 7, moving contact body 8, dynamic arc striking piece 11, connector 12, division, move striking
Piece 11 is fixed on upper plate 1, and the right-hand member of connector 12 is fixed on moving conductive row 5 using the 3rd bolt 15, and left end connection is dynamic
The right-hand member of arc striking piece 11.The oriented upper left bending part 1103 of low order end of dynamic arc striking piece 11.Counterpart 6 is fixed on upper plate
On 1, moving conductive row 5 is fixed on counterpart 6, divides tactile son 10 and plastic housing cage 9 is fixed on moving contact body 8, moving contact
Body 8 is connected by rotating shaft 7 with counterpart 12, and moving contact body 8 can rotate around rotating shaft 7.
Wherein, the right part both sides of arc striking piece 11 are moved provided with protruding 1102 perpendicular to the second of its own face, connector 12 exists
Symmetrical two are provided with each cavity of breaker, the two connectors 12 are respectively attached to both sides side of the upper plate in cavity
On, connector 12 is connected by the second bolt 14 with the second protrusion 1102 of dynamic arc striking piece 11.
The first groove 101 and the second groove 102 are provided with the side of upper plate 1, wherein, the first recessed poor 101 shape with
The side of the dynamic left part of arc striking piece 11 is consistent, and the second recessed poor 101 shape is consistent with the left end side of connector 12.Dynamic striking
The side of the left part of piece 11 has in the first groove 101 of insertion of protrusion 1101 so as to which dynamic arc striking piece 11 be fixed, while dynamic striking
The left part of piece 11 is fixed on upper plate 1 also by the first bolt 13.The left end of connector 12 is fixed on by the second bolt 14
In two grooves 102.
Erection sequence is：First static contact is fixed on lower shoe 2；Then dynamic arc striking piece 11 is inserted into upper plate 1
The first groove 101 in, and fixed by the first bolt 13；Then counterpart 6 and moving conductive row 5 are fixed on upper plate
On 1；Then the second groove 102 connector 12 being put on the side of upper plate 1, dynamic arc striking piece is fixedly connected with the second bolt 14
11 and connector 12, the right side of connector 12 is fixed on moving conductive row 5 with the 3rd bolt 15；Then by 8 sets of moving contact body
In rotating shaft 7, it is rotated with around the shaft 7, moving contact is placed in open position, covers lower shoe 2, then by upper plate 1 with
Lower shoe 2 is fixed on together, and finally moving contact body 8 is connected with the driving member of operating mechanism.
After installation, moving contact body 87 rotates around the shaft under the drive of operating mechanism, realizes switch closing and switch opening.Even
The left side of fitting 12 is connected with dynamic arc striking piece 11, and the right side of connector 12 is connected with moving conductive row 5, and the potential for moving arc striking piece 11 touches with dynamic
The potential of head is identical.
Claims (6)
1. a kind of movable contact system of frame circuit breaker, including：
Upper plate, lower shoe, on breaker body；
Moving contact, between upper plate and lower shoe；
The moving contact includes：
Moving conductive row, moving contact body, dynamic arc striking piece；
Characterized in that, the dynamic arc striking piece is located on upper plate；Moving contact also includes connector, and the connector connection is dynamic to be led
Electricity row and dynamic arc striking piece.
A kind of 2. frame circuit breaker movable contact system according to claim 1, it is characterised in that the side of the upper plate
Provided with the first groove and the second groove, the first recessed poor shape is consistent with the side of dynamic arc striking piece left part, moves arc striking piece
The side of left part has the first protrusion to insert so as to which dynamic arc striking piece be fixed in the first groove, while the left part of dynamic arc striking piece
It is bolted to by first on upper plate top, the second recessed poor shape is consistent with the left end side of connector, described
Connector left end is bolted in the second groove by second.
3. the movable contact system of a kind of frame circuit breaker according to claim 1, it is characterised in that the dynamic arc striking piece
Right part both sides be respectively equipped with perpendicular to its own face second protrusion, the connector in each cavity of breaker be provided with pair
Two claimed, the two connectors are respectively attached to upper plate on two sides in cavity, and connector is by the second bolt with moving
Second protrusion connection of arc striking piece.
4. the movable contact system of a kind of frame circuit breaker according to claim 1, it is characterised in that the dynamic arc striking piece
The oriented upper left bending part of low order end.
5. the movable contact system of a kind of frame circuit breaker according to claim 1, it is characterised in that the moving contact also wraps
Counterpart, rotating shaft, moving contact body, the tactile son of division, plastics cage are included, the counterpart is located on upper plate, the moving conductive
Row is connected with counterpart, and son is touched in the division and plastic housing is erected on moving contact body, and the moving contact body passes through rotating shaft
It is connected with counterpart, moving contact body can be around axis of rotation.
6. the movable contact system of a kind of frame circuit breaker according to claim 1, it is characterised in that the system also includes
Static contact, operating mechanism, the static contact include quiet busbar and quiet arc striking piece, and the quiet busbar and quiet arc striking piece are fixed on
On lower shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720571220.9U CN206947283U (en) | 2017-05-22 | 2017-05-22 | A kind of movable contact system of frame circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720571220.9U CN206947283U (en) | 2017-05-22 | 2017-05-22 | A kind of movable contact system of frame circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206947283U true CN206947283U (en) | 2018-01-30 |
Family
ID=61361038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720571220.9U Active CN206947283U (en) | 2017-05-22 | 2017-05-22 | A kind of movable contact system of frame circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206947283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017137A (en) * | 2017-05-22 | 2017-08-04 | 国网上海市电力公司 | A kind of movable contact system of frame circuit breaker |
-
2017
- 2017-05-22 CN CN201720571220.9U patent/CN206947283U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017137A (en) * | 2017-05-22 | 2017-08-04 | 国网上海市电力公司 | A kind of movable contact system of frame circuit breaker |
| CN107017137B (en) * | 2017-05-22 | 2020-04-28 | 国网上海市电力公司 | Moving contact system of frame circuit breaker |
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