CN112185754A

CN112185754A - Double-circuit alternating current switch circuit breaker of high-efficient arc extinguishing

Info

Publication number: CN112185754A
Application number: CN202011032630.9A
Authority: CN
Inventors: 汪媛格
Original assignee: Guangzhou Kaixie Technology Co ltd
Current assignee: Guangzhou Kaixie Technology Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-01-05

Abstract

The invention relates to the technical field of switch circuits and discloses a double-circuit alternating-current switch circuit breaker with efficient arc extinguishing, which comprises a shell, wherein a circuit breaking moving contact is arranged on the inner wall of the shell, a baffle is arranged on the left side inside the circuit breaking moving contact, an inner support is fixedly connected to the middle of the baffle, a fan is arranged on the right side of the inner support, a locking buckle is arranged inside the inner support, the center of the inner support is coupled with a contact moving contact, a relay button is arranged at the left end of the contact moving contact, a spring is arranged above the relay button, a connecting rod is movably connected to the right side of the relay button, a self-locking key is arranged at the right end. This double-circuit AC switch circuit breaker of high-efficient arc extinguishing, through setting up the high-efficient explosion chamber that can blow arc, the arc extinguishing effect is better, and built-in independent contact moving contact, but makes the switch during operation optional disconnection contact sound contact, makes the operation safer, compares traditional double-circuit breaker more intelligent.

Description

Double-circuit alternating current switch circuit breaker of high-efficient arc extinguishing

Technical Field

The invention relates to the technical field of switch circuits, in particular to a double-circuit alternating current switch breaker with efficient arc extinguishing.

Background

Electric arc is a gas discharge phenomenon, great harm has to electrical equipment, especially in AC distribution equipment, contain a large amount of contact switches, can produce electric arc influence switch life-span and electrical apparatus safety in contact and the open circuit process, common arc extinguishing mode has the arc blowing, vacuum arc extinguishing and the oil arc extinguishing that arc extinguishing bars and high voltage distribution used, in common low pressure AC distribution equipment, the circuit breaker also can install the arc extinguishing cover because of its common emergence electric arc additional, but current low pressure AC arc extinguishing device occupies the switch position, make the switch board space crowded, it is more complicated to make each way wiring that just is difficult to clean originally, this intangible has increased the short circuit risk, there is the potential safety hazard.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a double-circuit alternating current switch breaker with efficient arc extinction, which has the advantages of compact structure and effective protection of contact and broken circuit safety, and solves the problem of safety risk of the existing breaker.

(II) technical scheme

In order to achieve the purposes of compact structure and effective protection of contact and disconnection safety, the invention provides the following technical scheme: a double-circuit alternating current switch breaker capable of efficiently extinguishing arc comprises a shell, wherein a breaking moving contact is arranged on the inner wall of the shell, a baffle is arranged on the left side inside the breaking moving contact, an inner support is fixedly connected to the middle of the baffle, a fan is arranged on the right side of the inner support, a locking buckle is arranged inside the inner support, the center of the inner support is coupled with a contact moving contact, a relay button is arranged at the left end of the contact moving contact, a spring is arranged above the relay button, a connecting rod is movably connected to the right side of the relay button, a self-locking key is arranged at the right end of the connecting rod, an arc extinguishing chamber is arranged on the right side inside the breaking moving contact, a fixed arc extinguishing grid is arranged on the inner wall of the arc extinguishing chamber, a breaking fixed contact is connected to the right end of the breaking moving, the connection of safety cover and shell is provided with disposable chain, the center of static contact support is coupled insulating cover, the inside of insulating cover is provided with the contact static contact, the outside of contact static contact left end is provided with movable arc extinguishing bars.

Preferably, the right end of the disconnecting moving contact is provided with a cylindrical structure of the interface.

Preferably, the relay button is externally connected with a relay switch and corresponding insulation protection, and the relay button is bounced by a spring to keep the self-locking key higher than the contact moving contact in a reset state.

Preferably, the outer wall of the arc extinguish chamber is provided with air holes at certain intervals.

Preferably, the fixed arc-extinguishing grid is a disc structure with a round hole in the middle, and the round hole is matched with the contact moving contact in size.

Preferably, the right ends of the breaking static contact and the contact static contact are respectively provided with an insulating connecting end which is contacted with the winding posts, and an insulating cover is arranged between the winding posts.

Preferably, the movable arc-extinguishing grid is a disc structure fixed on the outer ring of the contact static contact, and the maximum circumferential diameter of the movable arc-extinguishing grid extending into the arc-extinguishing chamber part is smaller than the inner diameter of the arc-extinguishing chamber.

(III) advantageous effects

Compared with the prior art, the invention provides a double-circuit alternating current switch breaker with efficient arc extinction, which has the following beneficial effects:

1. this double-circuit AC switch circuit breaker of high-efficient arc extinguishing, through the fixed arc extinguishing bars of cladding around the contact position in the explosion chamber, the fan that the cooperation inner support right side set up is bloied and is advanced from the explosion chamber left side, blows to the supplementary arc extinguishing of sound contact position, compares in the single arc-blowing of transmission or arc extinguishing bars, and the arc extinguishing effect is better.

2. This double-circuit AC switch circuit breaker of high-efficient arc extinguishing through setting up built-in contact moving contact independently, makes the switch can select only break off contact sound contact at the during operation, makes the operation safer, compares traditional double-circuit breaker more intelligent.

3. This double-circuit AC switch circuit breaker of high-efficient arc extinguishing through the high-efficient explosion chamber that sets up to blow to and the movable arc extinguishing bars of the contact that opens circuit, makes this circuit breaker not only confine to be used for the circuit breaker, also can regard as the contactor to use.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1 according to the present invention;

fig. 3 is a schematic diagram of a separation structure of a static contact part according to the invention;

fig. 4 is a schematic view of the contact connection of the contactor of the present invention.

In the figure: 1. a housing; 2. a breaking moving contact; 3. a baffle plate; 4. an inner support; 5. a fan; 6. locking buckles; 7. a contact moving contact; 8. a relay button; 9. a spring; 10. a connecting rod; 11. a self-locking key; 12. an arc extinguishing chamber; 13. fixing an arc extinguishing grid; 14. disconnecting a fixed contact; 15. a static contact bracket; 16. a protective cover; 17. linkage is carried out once; 18. an insulating sleeve; 19. contacting a static contact; 20. and a movable arc extinguishing grid.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a two-way ac switch circuit breaker with high-efficient arc extinguishing function comprises a housing 1, a breaking moving contact 2 is arranged on the inner wall of the housing 1, a cylindrical structure of an interface is arranged at the right end of the breaking moving contact 2, a baffle 3 is arranged at the left side inside the breaking moving contact 2, an inner support 4 is fixedly connected in the middle of the baffle 3, a fan 5 is arranged at the right side of the inner support 4, a locking buckle 6 is arranged inside the inner support 4, the center of the inner support 4 is coupled with a contact moving contact 7, a relay button 8 is arranged at the left end of the contact moving contact 7, a spring 9 is arranged above the relay button 8, a connecting rod 10 is movably connected at the right side of the relay button 8, a self-locking key 11 is arranged at the right end of the connecting rod 10, the relay button 8 is externally connected with a relay switch and corresponding insulation, an arc extinguish chamber 12 is arranged on the right side inside the breaking movable contact 2, wind holes with certain intervals are arranged on the outer wall of the arc extinguish chamber 12, a fixed arc extinguishing grid 13 is arranged on the inner wall of the arc extinguish chamber 12, the fixed arc extinguishing grid 13 is of a disc structure, the middle of the fixed arc extinguishing grid is provided with a round hole matched with the size of the contact movable contact 7, the right end of the breaking movable contact 2 is connected with a breaking static contact 14 in a buckling mode, a static contact support 15 is arranged outside the breaking static contact 14, a protective cover 16 is arranged on the outer ring of the static contact support 15, a one-time linkage 17 is arranged at the joint of the protective cover 16 and the shell 1, the center of the static contact support 15 is coupled with an insulating sleeve 18, a contact static contact 19 is arranged inside the insulating sleeve 18, an insulating connecting end is arranged at the right ends, the movable arc-extinguishing grid 20 is a disc structure fixed on the outer ring of the contact static contact 19, and the maximum circumferential diameter of the part of the movable arc-extinguishing grid extending into the arc-extinguishing chamber 12 is smaller than the inner diameter of the arc-extinguishing chamber 12.

The working principle of the high-efficiency arc-extinguishing two-way alternating current switch breaker is that a locking buckle 6 is arranged in an inner support 4, the center of the inner support is coupled with a contact moving contact 7, a relay button 8 is arranged at the left end of the contact moving contact 7, the relay button 8 is externally connected with a relay switch, the inner support is bounced by a spring 9 in a reset state to keep a self-locking key 11 higher than the contact moving contact 7, so that the contact moving contact 7 is buckled and self-locked when moving rightwards to cross the locking buckle 6, the contact moving contact 7 is kept connected with a contact static contact 19, the fixed arc-extinguishing grid 13 is a disc structure, the middle part of the fixed arc-extinguishing grid is provided with a round hole matched with the size of the contact moving contact 7, when the contact moving contact 7 and the contact static contact 19 are contacted and broken, the fixed arc-extinguishing grid 13 is coated on the periphery of a contact position, and, to improve arc extinguishing efficiency.

The contact moving contact 7 and the contact static contact 19 can be when whole moving contact contains shell (1) fixed, realize independently opening a circuit and contact with the help of operation relay button 8, and when emergency break, disposable chain 17 flicks, whole shell 1 leaves the static contact with the moving contact 2 that opens a circuit and contact moving contact 7 together, at this moment, fixed movable arc-extinguishing bars 20 that set up in the contact static contact 19 outer lane just are in the static contact position that opens a circuit, play the arc extinguishing effect.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two-way AC switch circuit breaker of high-efficient arc extinguishing, includes shell (1), its characterized in that: the inner wall of the shell (1) is provided with a breaking moving contact (2), the left side inside the breaking moving contact (2) is provided with a baffle (3), the middle of the baffle (3) is fixedly connected with an inner support (4), the right side of the inner support (4) is provided with a fan (5), the inside of the inner support (4) is provided with a locking buckle (6), the center of the inner support (4) is coupled with a contact moving contact (7), the left end of the contact moving contact (7) is provided with a relay button (8), a spring (9) is arranged above the relay button (8), the right side of the relay button (8) is movably connected with a connecting rod (10), the right end of the connecting rod (10) is provided with a self-locking key (11), the right side inside the breaking moving contact (2) is provided with an arc extinguishing chamber (12), the inner wall of the arc extinguishing chamber (12) is, the circuit breaking static contact (14) is connected to the right end buckle of the circuit breaking moving contact (2), a static contact support (15) is arranged outside the circuit breaking static contact (14), the outer ring of the static contact support (15) is provided with a protective cover (16), a disposable chain (17) is arranged at the connection position of the protective cover (16) and the shell (1), the center of the static contact support (15) is coupled with an insulating sleeve (18), a contact static contact (19) is arranged inside the insulating sleeve (18), and a movable arc extinguishing grid (20) is arranged outside the left end of the contact static contact (19).

2. A two-way ac switch circuit breaker with high efficiency arc quenching as claimed in claim 1, wherein: the right end of the breaking moving contact (2) is provided with a cylindrical structure of an interface.

3. A two-way ac switch circuit breaker with high efficiency arc quenching as claimed in claim 1, wherein: the relay button (8) is externally connected with a relay switch and corresponding insulation protection, and is bounced by a spring (9) to keep a self-locking key (11) higher than the contact moving contact (7) in a reset state.

4. A two-way ac switch circuit breaker with high efficiency arc quenching as claimed in claim 1, wherein: the outer wall of the arc extinguish chamber (12) is provided with air holes at certain intervals.

5. A two-way ac switch circuit breaker with high efficiency arc quenching as claimed in claim 1, wherein: the fixed arc-extinguishing grid (13) is of a disc structure, and the middle of the fixed arc-extinguishing grid is provided with a round hole matched with the size of the contact moving contact (7).

6. A two-way ac switch circuit breaker with high efficiency arc quenching as claimed in claim 1, wherein: and the right ends of the disconnecting static contact (14) and the contact static contact (19) are respectively provided with an insulating connecting end which is contacted with the winding posts, and an insulating cover is arranged between the winding posts.

7. A two-way ac switch circuit breaker with high efficiency arc quenching as claimed in claim 1, wherein: the movable arc-extinguishing grid (20) is a disc structure fixed on the outer ring of the contact static contact (19), and the maximum circumferential diameter of the part of the movable arc-extinguishing grid extending into the arc-extinguishing chamber (12) is smaller than the inner diameter of the arc-extinguishing chamber (12).