CN107017137A - A kind of movable contact system of frame circuit breaker - Google Patents
A kind of movable contact system of frame circuit breaker Download PDFInfo
- Publication number
- CN107017137A CN107017137A CN201710363544.8A CN201710363544A CN107017137A CN 107017137 A CN107017137 A CN 107017137A CN 201710363544 A CN201710363544 A CN 201710363544A CN 107017137 A CN107017137 A CN 107017137A
- Authority
- CN
- China
- Prior art keywords
- striking piece
- arc striking
- moving contact
- upper plate
- dynamic
- 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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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
- H01H73/04—Contacts
-
- 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
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The present invention relates to a kind of movable contact system of frame circuit breaker, 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 present invention is directly connected to arc striking piece and moving contact, substantially increase electric arc and divide the speed that tactile son is 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
The present invention relates to breaker technical field, 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 flow, often due to the pitting of contact of moving contact is serious and electric
Arc sufficiently can not limit the Breaking capacity of breaker into arc-chutes grid in time.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, another to be
The Lorentz force that airflow thrust, wherein electromagnetic force are produced when being electric current flowing, the power can be such that electric arc is moved to arc extinguishing grid pieces；Air-flow
Thrust is due to produce after electric arc, the gas rapid expansion of proximate contacts, 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 present invention 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 sufficient
Into 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 between touching son, and about 5mm is left
The right side, electric arc is transferred on dynamic arc striking piece to need to puncture this air gap from moving contact and is only possible to complete to shift, and this mistake
Often the time is longer for journey, it is also possible to occur repeatedly, so that electric arc divides the overlong time for touching ablation on son in moving contact, moves and touches
Point scaling loss is serious, leverages the connecting-disconnecting function and open and close times of breaker.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of dynamic arc striking piece and dynamic
The frame circuit breaker movable contact system that contact is directly connected to, substantially increases electric arc and is transferred to dynamic striking from the tactile son of moving contact division
The speed of piece.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of movable contact system of frame circuit breaker, the system includes upper plate, lower shoe, static contact, moving contact, operation
Mechanism, described upper plate and lower shoe is fixed on breaker body, for support and spacing moving contact and static contact；It is described
Moving contact include moving conductive row, counterpart, rotating shaft, moving contact body, dynamic arc striking piece, connector, division and touch sub, plastic housing
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 arc piece.
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 bolt with the second protrusion of 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 to consolidate 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 present invention has advantages below：Dynamic arc striking piece arranges direct phase by connector with moving conductive
Even, 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 be turned on
Electric current, electric arc can be quickly transferred on dynamic arc striking piece, so as to reduce, electric arc is needed to puncture dynamic arc striking piece and son is touched in division
Between the air gap after can just be transferred to the process on dynamic arc striking piece, shorten electric arc division touch son on burning time,
The process that electric arc enters arc-chutes is accelerated, the break performance of breaker is improved.
Brief description of the drawings
Structure chart when Fig. 1 is movable contact system gate-dividing state of the present invention；
Fig. 2 is movable contact system upward view of the present invention；
Fig. 3 is that movable contact system of the present invention moves arc striking piece and connector connection diagram；
Fig. 4 is that movable contact system of the present invention moves arc striking piece schematic diagram；
Fig. 5 is movable contact system connector schematic diagram of the present invention；
Fig. 6 is movable contact system upper plate groove schematic diagram of the present invention.
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 moving conductive row, 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 present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
A kind of movable contact system of frame circuit breaker, the system includes 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, and son 10 is touched in division 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 be rotated 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 protrusion 1101 to insert so as to which dynamic arc striking piece 11 be fixed in the first groove 101, 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 connector 12 is put into the second groove 102 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, lower shoe 2 is covered, 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 is rotated 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 is touched 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.
2. a kind of 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 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 is also wrapped
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 |
|---|---|---|---|
| CN201710363544.8A CN107017137B (en) | 2017-05-22 | 2017-05-22 | Moving contact system of frame circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710363544.8A CN107017137B (en) | 2017-05-22 | 2017-05-22 | Moving contact system of frame circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107017137A true CN107017137A (en) | 2017-08-04 |
| CN107017137B CN107017137B (en) | 2020-04-28 |
Family
ID=59450622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710363544.8A Active CN107017137B (en) | 2017-05-22 | 2017-05-22 | Moving contact system of frame circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107017137B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117457453A (en) * | 2023-12-25 | 2024-01-26 | 浙江正泰电器股份有限公司 | Arc extinguishing structure of circuit breaker and circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0492336A2 (en) * | 1990-12-27 | 1992-07-01 | ABBPATENT GmbH | Arc chamber for an electrical switch device |
| CN102064055A (en) * | 2011-01-21 | 2011-05-18 | 西安交通大学 | Contact system of circuit breaker |
| DE102011089234A1 (en) * | 2010-12-21 | 2012-06-21 | Siemens Aktiengesellschaft | Electric arc extinguishing device for use in e.g. circuit breaker, has double guide rail with projection, which is arranged such that arc is extended to projection of rail and divided in two partial arcs conducted into arc arcing chambers |
| CN206947283U (en) * | 2017-05-22 | 2018-01-30 | 国网上海市电力公司 | A kind of movable contact system of frame circuit breaker |
-
2017
- 2017-05-22 CN CN201710363544.8A patent/CN107017137B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0492336A2 (en) * | 1990-12-27 | 1992-07-01 | ABBPATENT GmbH | Arc chamber for an electrical switch device |
| DE102011089234A1 (en) * | 2010-12-21 | 2012-06-21 | Siemens Aktiengesellschaft | Electric arc extinguishing device for use in e.g. circuit breaker, has double guide rail with projection, which is arranged such that arc is extended to projection of rail and divided in two partial arcs conducted into arc arcing chambers |
| CN102064055A (en) * | 2011-01-21 | 2011-05-18 | 西安交通大学 | Contact system of circuit breaker |
| CN206947283U (en) * | 2017-05-22 | 2018-01-30 | 国网上海市电力公司 | A kind of movable contact system of frame circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117457453A (en) * | 2023-12-25 | 2024-01-26 | 浙江正泰电器股份有限公司 | Arc extinguishing structure of circuit breaker and circuit breaker |
| CN117457453B (en) * | 2023-12-25 | 2024-04-30 | 浙江正泰电器股份有限公司 | Arc extinguishing structure of circuit breaker and circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107017137B (en) | 2020-04-28 |
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