WO2022135039A1 - Structure de câblage à n pôles pour disjoncteur - Google Patents

Structure de câblage à n pôles pour disjoncteur Download PDF

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Publication number
WO2022135039A1
WO2022135039A1 PCT/CN2021/133618 CN2021133618W WO2022135039A1 WO 2022135039 A1 WO2022135039 A1 WO 2022135039A1 CN 2021133618 W CN2021133618 W CN 2021133618W WO 2022135039 A1 WO2022135039 A1 WO 2022135039A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole
arc
baffle
circuit breaker
plate
Prior art date
Application number
PCT/CN2021/133618
Other languages
English (en)
Chinese (zh)
Inventor
周维峰
林凯
胡广召
Original Assignee
浙江奥来电器有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 浙江奥来电器有限公司 filed Critical 浙江奥来电器有限公司
Publication of WO2022135039A1 publication Critical patent/WO2022135039A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • 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

Definitions

  • the invention relates to a circuit breaker, in particular to a connection method of N-pole wires inside the circuit breaker.
  • the distribution box of some countries requires the incoming side of the N pole and the outgoing side of the L pole and N pole to be set on the same side.
  • the side and the N pole and L pole outlet side are set on the same side, but the current direction of the current loop is set incorrectly, so that the moving contacts cannot be quickly separated, and at the same time, the arc can not be better separated from the moving and static contacts, causing the contacts to burn. It is easy to find that the electrical clearance and creepage distance are insufficient, resulting in the failure of product verification after testing.
  • the present invention overcomes the problems existing in the prior art, and provides a method that no matter how the current direction changes when the current is interrupted, the moving contact will generate a larger repulsive force, so that the moving contact can be moved in the direction of repulsion.
  • an arc is generated between the static contact and the moving contact, and the changing force direction of the arc is to move towards the arc striking part and the arc striking angle or move between the arc striking plate and the arc striking, so that the arc is under the action of the repulsive force.
  • Move fast increase the arc transfer speed, reduce the ablation of the arc, and improve the breaking capacity.
  • an N-pole wiring structure of a circuit breaker comprising an N-pole static contact, an N-pole moving contact, an arc-striking plate, a middle seat and a base
  • the static contact includes a wiring part, a contact part and an arc striking part, the end of the wiring part is connected with a first wire, and the N-pole moving contact and the arc striking plate are connected with a second wire, so
  • the arc striking board is also connected to the N-pole power supply incoming line, and it is characterized in that: the wiring part of the N-pole static contact is in the shape of a straight bar;
  • the arc striking plate includes a straight side, a vertical side and a hypotenuse, wherein the hypotenuse is inclined to one side of the straight side, and an arc striking is formed between the hypotenuse and the arc striking part of the N pole static contact.
  • the N-pole power input wire is connected to the
  • a further arrangement of the present invention is that: the straight side and the vertical side of the arc striking plate are vertically arranged.
  • a U-shaped current channel is formed between the N-pole power supply line and the arc-striking plate, and the arc moves in the elongated direction, which is conducive to the extinguishing of the arc and improves the breaking capacity.
  • a further arrangement of the present invention is that: the corresponding parts of the middle seat and the base and located in the arc striking area are provided with raised ribs, and the setting direction of the raised ribs is the same as the setting direction of the hypotenuse of the arc striking plate.
  • Ribs are arranged on the base and the middle base, mainly for the purpose of increasing the creepage distance and electrical clearance.
  • a further arrangement of the present invention is: the arc striking portion of the N-pole static contact is arranged in an arched manner, an L-shaped first baffle plate is arranged on the middle seat and is located below and on one side of the arc extinguishing area, and the base is provided with an L-shaped first baffle plate. There is a second baffle that is inserted into the first baffle, the first baffle and the second baffle are inserted to form an arc-blocking edge, and the bottom edge of the first baffle is also provided with an exhaust through hole.
  • FIG. 1 is a perspective view of an embodiment of the present invention
  • FIG. 2 is a structural diagram reflecting the closure of the N-pole moving contact and the N-pole stationary contact according to an embodiment of the present invention
  • FIG. 3 is a structural diagram of a base according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a middle seat according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of the current direction and the repulsive force generated by the N-pole moving contact and the N-pole static contact according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of the current direction and the repulsive force generated between the arc striking plate and the N-pole static contact according to an embodiment of the present invention.
  • an N-pole wiring structure of a circuit breaker includes N-pole static contact 1, N-pole moving contact 2, arc striking plate 3, middle seat 4 and base 5.
  • the said The N pole static contact 1 includes a wiring part 11 , a contact part 12 and an arc striking part 13 , the end of the wiring part 11 is connected with a first wire 6 , the N pole moving contact 2 and the arc striking plate A second wire 7 is connected between 3, and the N-pole power supply inlet wire 8 is also connected to the arc-striking plate 3.
  • the wiring portion 11 of the N-pole static contact 1 is a straight bar.
  • the middle seat 4 or the base 5 is provided with a card slot, the wiring part 11 is placed in the card slot, and the arc striking plate 3 includes a straight edge 31, a vertical edge 32 and a hypotenuse 33, wherein the hypotenuse 33 is directed to the One side of the straight side 31 is inclined and arranged, and an arc striking area is formed between the oblique side 33 and the arc striking part 13 of the N pole static contact 1, and the N pole power supply wire 8 is connected to the end of the straight side 31, so
  • the second wire 7 is connected to the end of the vertical side 32 close to the moving contact 2 or at the junction of the vertical side 32 and the hypotenuse 33, and the current flows from the second wire 7 to the N pole moving contact 2 and then flows through the N pole static.
  • N pole moving contact 2 and N pole static contact 1 are arranged in a U shape, N pole moving contact 2 and N pole
  • the pole static contact 1 is stressed in the separation direction, which is conducive to the rapid opening of the N pole moving contact 2, reducing the contact burnout, improving the electrical life and eliminating the possibility of contact welding, as shown in Figure 5.
  • the straight side 31 and the vertical side 32 of the arc striking plate 3 are vertically arranged.
  • a U-shaped current channel is better formed between the N-pole power supply line 8 and the arc striking plate 3, and the arc moves in the elongated direction, which is beneficial to extinguishing the arc and improving the breaking capacity.
  • the corresponding parts of the middle seat 4 and the base 5 and located in the arc striking area are provided with raised ribs 41 and 51.
  • the setting direction of the raised ribs 41 and 51 is the same as the setting direction of the hypotenuse 33 of the arc striking plate 3.
  • the It is roughly the same when it is the same, and does not need to be the same. It is mainly for the purpose of increasing the creepage distance and electrical clearance, and can generate gas when the arc passes, cool the arc, increase the pressure, increase the gas discharge speed, and improve the breaking capacity.
  • the arc striking portion 13 of the N-pole stationary contact 1 is arranged in an arched manner, and an L-shaped first baffle plate 42 is arranged on the middle seat 4 and located below and on one side of the arc extinguishing area.
  • the base 5 is provided with a second baffle 52 that is inserted into the first baffle 42, and the first baffle 42 and the second baffle 52 are inserted to form an arc-cutting edge.
  • the first baffle The bottom edge of 42 is also provided with an exhaust through hole 421 .
  • the arc striking portion 13 of the N-pole static contact 1 is arranged in an arched shape, so that the arc can be guided to go to the arc striking area, and the arc isolation edge plays the role of isolating the arc, and the exhaust through hole 421 can be very Good exhaust gas and arc, reduce the air pressure in the circuit breaker.

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  • Breakers (AREA)

Abstract

L'invention concerne un disjoncteur, et en particulier un mode de raccordement d'un câble à N pôles à l'intérieur du disjoncteur. La solution technique suivante est utilisée : une structure de câblage à N pôles pour un disjoncteur, une portion de câblage (11) d'un contact fixe à N pôles (1) étant en forme de bande droite ; un siège central (4) et/ou une base (5) sont pourvus d'une rainure, et la portion de câblage est disposée dans la rainure ; et une plaque de guidage d'arc (3) comprend un bord droit (31), un bord vertical (32) et un bord biseauté (33), le bord biseauté étant disposé obliquement vers le bord droit, une zone de guidage d'arc étant formée entre le bord biseauté et une portion de guidage d'arc (13) du contact fixe à N pôles, un câble d'entrée de source d'alimentation à N pôles (8) étant relié à une portion d'extrémité du bord droit, et un deuxième câble (7) étant relié à l'extrémité du bord vertical qui est proche d'un contact mobile (2) ou d'un joint entre le bord vertical et le bord biseauté. L'utilisation de la solution permet de réaliser un disjoncteur, de sorte qu'une vitesse de transfert d'arc électrique est accrue, l'ablation par un arc électrique est réduite et la capacité de rupture est améliorée.
PCT/CN2021/133618 2020-12-25 2021-11-26 Structure de câblage à n pôles pour disjoncteur WO2022135039A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011562359.XA CN112635258A (zh) 2020-12-25 2020-12-25 一种断路器的n极接线结构
CN202011562359.X 2020-12-25

Publications (1)

Publication Number Publication Date
WO2022135039A1 true WO2022135039A1 (fr) 2022-06-30

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PCT/CN2021/133618 WO2022135039A1 (fr) 2020-12-25 2021-11-26 Structure de câblage à n pôles pour disjoncteur

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CN (1) CN112635258A (fr)
WO (1) WO2022135039A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112635258A (zh) * 2020-12-25 2021-04-09 浙江奥来电器有限公司 一种断路器的n极接线结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569651A1 (fr) * 1992-05-13 1993-11-18 Hager Electro S.A. Procédé d'assemblage de disjoncteurs de phase et de neutre et disjoncteur de ce type
CN208352246U (zh) * 2018-05-16 2019-01-08 德力西电气有限公司 一种小型断路器的灭弧系统
CN212136386U (zh) * 2020-05-09 2020-12-11 温州凯信电气有限公司 一种断路器灭弧系统
CN112530765A (zh) * 2020-12-25 2021-03-19 浙江奥来电器有限公司 一种断路器的n极灭弧装置
CN112635258A (zh) * 2020-12-25 2021-04-09 浙江奥来电器有限公司 一种断路器的n极接线结构

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569651A1 (fr) * 1992-05-13 1993-11-18 Hager Electro S.A. Procédé d'assemblage de disjoncteurs de phase et de neutre et disjoncteur de ce type
CN208352246U (zh) * 2018-05-16 2019-01-08 德力西电气有限公司 一种小型断路器的灭弧系统
CN212136386U (zh) * 2020-05-09 2020-12-11 温州凯信电气有限公司 一种断路器灭弧系统
CN112530765A (zh) * 2020-12-25 2021-03-19 浙江奥来电器有限公司 一种断路器的n极灭弧装置
CN112635258A (zh) * 2020-12-25 2021-04-09 浙江奥来电器有限公司 一种断路器的n极接线结构

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