CN112614765A - Static contact arc extinguishing module of circuit breaker - Google Patents
Static contact arc extinguishing module of circuit breaker Download PDFInfo
- Publication number
- CN112614765A CN112614765A CN202011488549.1A CN202011488549A CN112614765A CN 112614765 A CN112614765 A CN 112614765A CN 202011488549 A CN202011488549 A CN 202011488549A CN 112614765 A CN112614765 A CN 112614765A
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- CN
- China
- Prior art keywords
- arc
- static contact
- arc extinguishing
- circuit breaker
- contact
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- 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.)
- Pending
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 48
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 238000002955 isolation Methods 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 238000010891 electric arc Methods 0.000 description 12
- 230000004888 barrier function Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000035699 permeability Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Images
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
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- 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
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Landscapes
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
本发明涉及一种断路器的静触头灭弧模块，包括静触头、灭弧室、接线板，所述的静触头的一端具有与动触头相配合的接触部，该接触部上设置有静触点，所述的静触头的另一端向接线板方向折弯延伸且形成有两个呈方框状的导电部，两个导电部之间形成有容置腔，所述的灭弧室设置在容置腔内，所述的接线板的一端折弯延伸且形成有接线部，该接线部上设置有接线孔，所述的接线板的另一端分别向两个导电部的外侧折弯延伸且形成有两个呈方框状的连接部，且两个连接部分别与两个导电部电连接。本发明具有结构简单、性能稳定可靠、装配便捷、灭弧效果好、能有效延长断路器使用寿命、提高断路器分断能力的优点。
The invention relates to a static contact arc extinguishing module of a circuit breaker, comprising a static contact, an arc extinguishing chamber and a wiring board. One end of the static contact has a contact part matched with the movable contact, and the contact part is A static contact is provided, and the other end of the static contact is bent and extended toward the wiring board, and two conductive parts in the shape of a square are formed, and a accommodating cavity is formed between the two conductive parts. The arc-extinguishing chamber is arranged in the accommodating cavity, one end of the wiring board is bent and extended and a wiring part is formed, the wiring part is provided with wiring holes, and the other end of the wiring board is respectively connected to the two conductive parts. The outer side is bent and extended to form two frame-shaped connection parts, and the two connection parts are electrically connected to the two conductive parts respectively. The invention has the advantages of simple structure, stable and reliable performance, convenient assembly, good arc extinguishing effect, can effectively prolong the service life of the circuit breaker, and improve the breaking capacity of the circuit breaker.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a static contact arc extinguishing module of a circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time. The circuit breaker has overload, short circuit and under-voltage protection functions, can protect lines and power supply equipment from being damaged, and can protect fire hazards possibly caused by long-term grounding faults which cannot be detected by overcurrent protection. The moulded case circuit breaker includes plastic casing, operating device, contact system, arc extinguishing system, and current moulded case circuit breaker's arc extinguishing system structural design is unreasonable, and the atress area of electric arc is less, and magnetic field is more weak, only can receive the effect of lorentz power at the electric arc that is close to static contact and moving contact department, and the arc extinguishing effect is relatively poor, and the contact is burnt easily to lead to the breaking capacity of circuit breaker less than.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the static contact arc extinguishing module of the circuit breaker, which has the advantages of simple structure, stable and reliable performance, convenience in assembly, good arc extinguishing effect, capability of effectively prolonging the service life of the circuit breaker and improving the breaking capacity of the circuit breaker.
In order to achieve the purpose, the invention adopts a fixed contact arc extinguishing module of a circuit breaker, which comprises a fixed contact, an arc extinguishing chamber arranged in the fixed contact and a wiring board connected with the fixed contact, wherein one end of the fixed contact is provided with a contact part matched with a movable contact, the fixed contact is arranged on the contact part, the other end of the fixed contact is bent and extended towards the wiring board and is formed with two square frame-shaped conductive parts, an accommodating cavity is formed between the two conductive parts, the arc extinguishing chamber is arranged in the accommodating cavity, one end of the wiring board is bent and extended and is formed with a wiring part, the wiring part is provided with a wiring hole, the other end of the wiring board is bent and extended towards the outer sides of the two conductive parts respectively and is formed with two square frame-shaped connecting parts, and the two connecting parts are electrically connected with.
The beneficial effect of above-mentioned structure is: the static contact and the wiring board of the static contact arc extinguishing module are respectively provided with the conductive parts and the connecting parts which are distributed on two sides of the arc extinguishing chamber, the conductive parts and the connecting parts are in a square frame shape, the whole electric arc can be wrapped in a magnetic field generated by the static contact through the conductive parts and the connecting parts in the square frame shape, when the breaker is disconnected, the electric arc can be fully acted by the Lorentz force, the stress area of the electric arc is effectively increased, the magnetic field is strong, the arc extinguishing effect is favorably enhanced, and the disconnection capability of the breaker is greatly improved. Therefore, the static contact arc extinguishing module of the circuit breaker has the advantages of simple structure, stable and reliable performance, convenience and quickness in assembly, good arc extinguishing effect, capability of effectively prolonging the service life of the circuit breaker and improving the breaking capacity of the circuit breaker.
Particularly, the arc extinguishing cover comprises two arc barriers and a plurality of arc extinguishing grid pieces arranged between the two arc barriers at one side corresponding to the fixed contact, the arc extinguishing grid pieces are arranged between the two arc barriers at intervals in an arc shape, arc striking grooves are formed in the arc extinguishing grid pieces, and arc striking channels are formed among the arc striking grooves of the arc extinguishing grid pieces. The arc extinguishing bars are arranged on one side of the static contact, so that the length of the arc extinguishing bars is not more than the position of the moving contact and the static contact, a magnetic field can directly pass through an arc area, and the arc extinguishing bars cannot shield the magnetic field passing through the arc area, thereby being beneficial to improving the arc extinguishing performance of the static contact arc extinguishing module.
Particularly, one end of one of the arc extinguishing grids of the arc extinguishing cover bends and extends towards the direction of the stationary contact and forms an arc striking angle. The arc striking angle can lead the electric arc into the arc extinguishing chamber quickly, which is beneficial to the quick extinguishing of the electric arc.
Particularly, two arc isolating plates of the arc extinguishing chamber are respectively provided with an iron core corresponding to the conductive part and the connecting part. The iron core can increase magnetic permeability, and is beneficial to improving the arc extinguishing performance of the static contact arc extinguishing module.
Particularly, two flash barriers on be provided with respectively with the appearance assorted draw-in groove of iron core, the iron core block in the draw-in groove, and constitute the joint cooperation of iron core and flash barriers. The iron core and the arc isolation plate are connected in a clamping matching mode, so that the arc isolation plate and the iron core are convenient to assemble, and the assembly efficiency of the static contact arc extinguishing module is improved.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is an exploded view of an embodiment of the present invention.
FIG. 3 is a top view of an embodiment of the present invention.
Fig. 4 is an assembly view of a fixed contact and a wiring board according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 5, an embodiment of the invention is a static contact arc extinguishing module of a circuit breaker, including a static contact 10, an arc extinguishing chamber 20 disposed in the static contact 10, and a wiring board 30 connected to the static contact 10, wherein one end of the static contact 10 has a contact portion 11 matched with a movable contact 40, the contact part 11 is provided with a static contact 12, the other end of the static contact 10 is bent and extended towards the wiring board 30 and is formed with two conductive parts 13 in a square frame shape, a containing cavity 100 is formed between the two conductive parts 13, the arc extinguishing chamber 20 is arranged in the accommodating cavity 100, one end of the wiring board 30 is bent and extended and is provided with a wiring part 31, the wiring portion 31 is provided with a wiring hole 32, the other end of the wiring board 30 is bent and extended to the outer sides of the two conductive portions 13, and two connection portions 33 in a square frame shape are formed, and the two connection portions 33 are electrically connected to the two conductive portions 13, respectively. The tail portions of the two connection portions 33 are soldered to the tail portions of the two conductive portions 13, respectively.
As shown in fig. 2, the arc-extinguishing cover 20 includes two arc-isolating plates 21, and a plurality of arc-extinguishing bars 22 disposed between the two arc-isolating plates 21 and corresponding to one side of the stationary contact 10, the plurality of arc-extinguishing bars 22 are arranged between the two arc-isolating plates 21 at intervals in an arc shape, arc-striking grooves 221 are disposed on the plurality of arc-extinguishing bars 22, and arc-striking channels 222 are formed between the arc-striking grooves 221 of the plurality of arc-extinguishing bars 22. The arc extinguishing bars are arranged on one side of the static contact, so that the length of the arc extinguishing bars is not more than the position of the moving contact and the static contact, a magnetic field can directly pass through an arc area, and the arc extinguishing bars cannot shield the magnetic field passing through the arc area, thereby being beneficial to improving the arc extinguishing performance of the static contact arc extinguishing module. One end of one arc extinguishing grid piece 22 of the arc extinguishing cover 20 bends and extends towards the direction of the fixed contact 12, and an arc striking angle 223 is formed. The arc striking angle can lead the electric arc into the arc extinguishing chamber quickly, which is beneficial to the quick extinguishing of the electric arc. The two arc isolating plates 21 of the arc-extinguishing chamber 20 are respectively provided with an iron core 34 corresponding to the conductive part 13 and the connecting part 33. The iron core can increase magnetic permeability, and is beneficial to improving the arc extinguishing performance of the static contact arc extinguishing module. Two flash barriers 21 on be provided with respectively with iron core 34's appearance assorted draw-in groove 211, iron core 34 block in draw-in groove 211, and constitute iron core 34 and flash barriers 21's joint cooperation. The iron core and the arc isolation plate are connected in a clamping matching mode, so that the arc isolation plate and the iron core are convenient to assemble, and the assembly efficiency of the static contact arc extinguishing module is improved.
The static contact and the wiring board of the static contact arc extinguishing module are respectively provided with the conductive parts and the connecting parts which are distributed on two sides of the arc extinguishing chamber, the conductive parts and the connecting parts are in a square frame shape, the whole electric arc can be wrapped in a magnetic field generated by the static contact through the conductive parts and the connecting parts in the square frame shape, when the breaker is disconnected, the electric arc can be fully acted by the Lorentz force, the stress area of the electric arc is effectively increased, the magnetic field is strong, the arc extinguishing effect is favorably enhanced, and the disconnection capability of the breaker is greatly improved. Therefore, the static contact arc extinguishing module of the circuit breaker has the advantages of simple structure, stable and reliable performance, convenience and quickness in assembly, good arc extinguishing effect, capability of effectively prolonging the service life of the circuit breaker and improving the breaking capacity of the circuit breaker. As shown in fig. 4 and 5, the current (I) flows from the wiring portion of the wiring board to the connection portion of the wiring board, the conductive portion of the fixed contact, and reaches the fixed contact, at this time, the arc (E) generated by the fixed contact 12 and the movable contact 40 (E is covered by the magnetic field, and according to the lorentz force left-hand rule, the arc (E) at the time of breaking is subjected to the electric power (F facing the arc extinguishing chamber, as shown in the figure), thereby facilitating the rapid extinguishing of the arc and improving the breaking capacity of the circuit breaker.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011488549.1A CN112614765A (en) | 2020-12-16 | 2020-12-16 | Static contact arc extinguishing module of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011488549.1A CN112614765A (en) | 2020-12-16 | 2020-12-16 | Static contact arc extinguishing module of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112614765A true CN112614765A (en) | 2021-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011488549.1A Pending CN112614765A (en) | 2020-12-16 | 2020-12-16 | Static contact arc extinguishing module of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112614765A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118098898A (en) * | 2024-04-24 | 2024-05-28 | 温州晋开电气有限公司 | Plastic case circuit breaker with good arc extinguishing effect |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100079914A (en) * | 2008-12-31 | 2010-07-08 | 엘에스산전 주식회사 | Arc extinguishing apparatus for mold cased circuit breaker |
| CN108597941A (en) * | 2018-07-18 | 2018-09-28 | 环宇集团浙江高科股份有限公司 | A kind of breaker of plastic casing static contact arc eliminating module |
| CN108766849A (en) * | 2018-07-18 | 2018-11-06 | 环宇集团浙江高科股份有限公司 | Breaker double arc extinguishing chambers static contact arc eliminating module |
| CN209912771U (en) * | 2019-08-06 | 2020-01-07 | 寺崎科技有限公司 | Magnetic blowout system of molded case direct current circuit breaker |
| CN213816041U (en) * | 2020-12-16 | 2021-07-27 | 环宇高科有限公司 | Static contact arc extinguishing module of circuit breaker |
-
2020
- 2020-12-16 CN CN202011488549.1A patent/CN112614765A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100079914A (en) * | 2008-12-31 | 2010-07-08 | 엘에스산전 주식회사 | Arc extinguishing apparatus for mold cased circuit breaker |
| CN108597941A (en) * | 2018-07-18 | 2018-09-28 | 环宇集团浙江高科股份有限公司 | A kind of breaker of plastic casing static contact arc eliminating module |
| CN108766849A (en) * | 2018-07-18 | 2018-11-06 | 环宇集团浙江高科股份有限公司 | Breaker double arc extinguishing chambers static contact arc eliminating module |
| CN209912771U (en) * | 2019-08-06 | 2020-01-07 | 寺崎科技有限公司 | Magnetic blowout system of molded case direct current circuit breaker |
| CN213816041U (en) * | 2020-12-16 | 2021-07-27 | 环宇高科有限公司 | Static contact arc extinguishing module of circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118098898A (en) * | 2024-04-24 | 2024-05-28 | 温州晋开电气有限公司 | Plastic case circuit breaker with good arc extinguishing effect |
| CN118098898B (en) * | 2024-04-24 | 2024-06-21 | 温州晋开电气有限公司 | Plastic case circuit breaker with good arc extinguishing effect |
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