阅读说明：本技术 一种用于断路器的弧夹角灭弧结构 (Arc included angle arc extinguishing structure for circuit breaker ) 是由 陈考全 何正荣 于 2021-07-14 设计创作，主要内容包括：本发明公开了一种用于断路器的弧夹角灭弧结构,包括：断路器主体、第一引弧角、第二引弧角和灭弧室；第一引弧角和第二引弧角均设置于断路器主体上,灭弧室设置于断路器主体上,灭弧室与断路器之间形成有一容置空间,第一引弧角和第二引弧角均设置于容置空间内；第一引弧角和第二引弧角共同用于引导断路器主体断路时产生的电弧,且第一引弧角和第二引弧角之间形成有一夹角,夹角呈60度至120度之间。通过对本发明的应用,提供了结构更为合理的断路器结构,具体地通过相应的灭弧室的内部设计以及对第一引弧角和第二引弧角的设置使得电弧更容易进入灭弧室而不会堆积,进一步提高了断路器的安全性以及可靠性。(The invention discloses an arc included angle arc extinguishing structure for a circuit breaker, which comprises: the circuit breaker comprises a circuit breaker main body, a first arc striking angle, a second arc striking angle and an arc extinguishing chamber; the first arc striking angle and the second arc striking angle are both arranged on the breaker main body, the arc extinguishing chamber is arranged on the breaker main body, an accommodating space is formed between the arc extinguishing chamber and the breaker, and the first arc striking angle and the second arc striking angle are both arranged in the accommodating space; the first arc ignition angle and the second arc ignition angle are jointly used for guiding electric arcs generated when the breaker main body is broken, an included angle is formed between the first arc ignition angle and the second arc ignition angle, and the included angle is 60 degrees to 120 degrees. By applying the invention, a breaker structure with a more reasonable structure is provided, and particularly, the arc can more easily enter the arc extinguish chamber without accumulation through the internal design of the corresponding arc extinguish chamber and the arrangement of the first arc ignition angle and the second arc ignition angle, so that the safety and the reliability of the breaker are further improved.)

1. An arc included angle arc extinguishing structure for a circuit breaker, comprising: the circuit breaker comprises a circuit breaker main body, a first arc striking angle, a second arc striking angle and an arc extinguishing chamber; the first arc striking angle and the second arc striking angle are both arranged on the breaker main body, the arc extinguish chamber is arranged on the breaker main body, an accommodating space is formed between the arc extinguish chamber and the breaker, and the first arc striking angle and the second arc striking angle are both arranged in the accommodating space; the first arc ignition angle and the second arc ignition angle are jointly used for guiding electric arcs generated when the breaker main body is broken, an included angle is formed between the first arc ignition angle and the second arc ignition angle, and the included angle is 60-120 degrees.

2. The included arc angle arc extinguishing structure for a circuit breaker according to claim 1, wherein a gap is formed between an inner wall of the accommodating space and each of the first arc striking angle and the second arc striking angle, and the accommodating space comprises a first accommodating portion, a second accommodating portion and a third accommodating portion which are sequentially communicated from top to bottom; the inner contour of the second accommodating part is gradually increased from top to bottom, and the inner contour of the third accommodating part is gradually decreased from top to bottom.

3. The included arc angle arc extinguishing structure for a circuit breaker according to claim 2, wherein upper portions of the first and second arc striking corners are both disposed toward an inner side of the second accommodating portion, and lower portions of the first and second arc striking corners are both disposed in the third accommodating portion.

4. The included arc angle arc quenching structure for a circuit breaker of claim 1 wherein said arc chute comprises: the circuit breaker comprises a circuit breaker main body, a plurality of first plate groups and a plurality of second plate groups, wherein the first plate groups are sequentially stacked and arranged on the circuit breaker main body from bottom to top, the second plate groups are sequentially stacked and arranged on the first plate groups from bottom to top, the second accommodating space and the third accommodating space are formed in the first plate groups, and the first accommodating space is formed in the second plate groups.

5. The included arc extinguishing structure for circuit breaker according to claim 4, wherein each of the first plate groups comprises: the two first grid plates are positioned on the same horizontal plane and are oppositely arranged, one end of each first grid plate is inwards concave to form a U-shaped notch, the two U-shaped notches of each first plate group are oppositely arranged, and the second accommodating part and the third accommodating part are formed among the plurality of U-shaped notches; the inner contours of the U-shaped notches arranged in the same direction in the first plate groups are increased from bottom to top and then reduced.

6. The included arc extinguishing structure for circuit breaker according to claim 4, wherein each of the second plate groups comprises: the first grid plates are arranged on the same horizontal plane and are opposite to each other, one end of each second grid plate is inwards concave to form a V-shaped notch, the two V-shaped notches of each second plate group are oppositely arranged, and the first accommodating portion is formed among the V-shaped notches.

7. The included arc angle arc quenching structure for a circuit breaker of claim 4, wherein said arc chute further comprises: the top plate is fixedly arranged on the upper surface of the uppermost one of the first plate groups, a plurality of connecting plates are arranged between every two adjacent first plate groups along the outer edge, a plurality of connecting plates are arranged between every two adjacent second plate groups along the outer edge, and a plurality of connecting plates are arranged between the first plate group and the second plate group which are close to each other along the outer edge.

8. The arc included angle arc extinguishing structure for the circuit breaker according to claim 1, wherein the first arc ignition angle and the second arc ignition angle are symmetrically arranged in the accommodating space, the first arc ignition angle and the second arc ignition angle are both obliquely and extend from bottom to top, the upper end of the first arc ignition angle and the upper end of the second arc ignition angle are relatively far away from each other, the lower end of the first arc ignition angle and the lower end of the second arc ignition angle are relatively close to each other, and the horizontal outer contour of the first arc ignition angle and the horizontal outer contour of the second arc ignition angle are both gradually reduced from bottom to top.

9. The arc included angle arc extinguishing structure for circuit breaker according to claim 1, wherein the circuit breaker main body comprises at least a fixed contact and a movable contact, the fixed contact and the movable contact are operatively close to each other to be connected or far away to be disconnected; and when the circuit is broken, the static contact is arranged close to the lower end of the first arc ignition angle, and the moving contact is arranged close to the lower end of the second arc ignition angle.

10. The included arc angle quenching structure for a circuit breaker of claim 9 wherein said circuit breaker body further comprises: the arc extinguishing chamber is arranged on the upper portion of the bearing frame, an arc ignition port is formed in the upper portion of the bearing frame, the first arc ignition angle and the second arc ignition angle are respectively arranged on two sides of the arc ignition port, the electromagnetic driving device is installed in the bearing frame, the output end of the electromagnetic driving device is connected with the connecting rod mechanism, the connecting rod mechanism is connected with the movable contact, and the movable contact is driven by the electromagnetic driving device to be operatively close to or far away from the fixed contact.

Technical Field

The invention relates to the technical field of circuit breakers, in particular to an arc included angle arc extinguishing structure for a circuit breaker.

Background

Generally, a direct current circuit breaker has the functions of switching on and switching off current when working, the functions of switching on and switching off current are mainly realized by combining contact and separation of a moving contact and a fixed contact of the circuit breaker, and when the moving contact moves to be in contact with the fixed contact through the action of electricity obtained by an electromagnetic coil, the circuit breaker switches on the current; when the electromagnetic coil loses power, the moving contact is separated from the fixed contact, the circuit breaker breaks current, high voltage is generated between the moving contact and the fixed contact at the moment to form electric arcs, the electric arcs enter the arc extinguish chamber, and arc extinction is carried out by the arc extinguish chamber, so that the function of breaking the current of the circuit breaker is achieved. However, when the existing circuit breaker breaks the current, the current is limited by the structural limitations of the arc extinguish chamber and the circuit breaker, the generated arc is easy to accumulate between the moving contact and the fixed contact or at the entrance of the arc extinguish chamber, and the arc cannot fully enter the arc extinguish chamber, so that the arc extinguish chamber cannot effectively extinguish the arc, and the moving contact and the fixed contact of the direct current circuit breaker are burnt.

Disclosure of Invention

In view of the above, in order to solve the above problems, an object of the present invention is to provide an arc extinguishing structure for a circuit breaker, including: the circuit breaker comprises a circuit breaker main body, a first arc striking angle, a second arc striking angle and an arc extinguishing chamber; the first arc striking angle and the second arc striking angle are both arranged on the breaker main body, the arc extinguish chamber is arranged on the breaker main body, an accommodating space is formed between the arc extinguish chamber and the breaker, and the first arc striking angle and the second arc striking angle are both arranged in the accommodating space; the first arc ignition angle and the second arc ignition angle are jointly used for guiding electric arcs generated when the breaker main body is broken, an included angle is formed between the first arc ignition angle and the second arc ignition angle, and the included angle is 60-120 degrees.

In another preferred embodiment, a certain gap is formed between the inner wall of the accommodating space and each of the first arc-striking angle and the second arc-striking angle, and the accommodating space comprises a first accommodating part, a second accommodating part and a third accommodating part which are sequentially communicated from top to bottom; the inner contour of the second accommodating part is gradually increased from top to bottom, and the inner contour of the third accommodating part is gradually decreased from top to bottom.

In another preferred embodiment, the upper portions of the first arc ignition angle and the second arc ignition angle are both disposed toward the inner side of the second accommodating portion, and the lower portions of the first arc ignition angle and the second arc ignition angle are both disposed in the third accommodating portion.

In another preferred embodiment, the arc extinguishing chamber comprises: the circuit breaker comprises a circuit breaker main body, a plurality of first plate groups and a plurality of second plate groups, wherein the first plate groups are sequentially stacked and arranged on the circuit breaker main body from bottom to top, the second plate groups are sequentially stacked and arranged on the first plate groups from bottom to top, the second accommodating space and the third accommodating space are formed in the first plate groups, and the first accommodating space is formed in the second plate groups.

In another preferred embodiment, each of the first plate groups includes: the two first grid plates are positioned on the same horizontal plane and are oppositely arranged, one end of each first grid plate is inwards concave to form a U-shaped notch, the two U-shaped notches of each first plate group are oppositely arranged, and the second accommodating part and the third accommodating part are formed among the plurality of U-shaped notches; the inner contours of the U-shaped notches arranged in the same direction in the first plate groups are increased from bottom to top and then reduced.

In another preferred embodiment, each of the second plate groups includes: the first grid plates are arranged on the same horizontal plane and are opposite to each other, one end of each second grid plate is inwards concave to form a V-shaped notch, the two V-shaped notches of each second plate group are oppositely arranged, and the first accommodating portion is formed among the V-shaped notches.

In another preferred embodiment, the arc extinguishing chamber further comprises: the top plate is fixedly arranged on the upper surface of the uppermost one of the first plate groups, a plurality of connecting plates are arranged between every two adjacent first plate groups along the outer edge, a plurality of connecting plates are arranged between every two adjacent second plate groups along the outer edge, and a plurality of connecting plates are arranged between the first plate group and the second plate group which are close to each other along the outer edge.

In another preferred embodiment, the first arc ignition angle and the second arc ignition angle are symmetrically arranged in the accommodating space, the first arc ignition angle and the second arc ignition angle are both obliquely and extend from bottom to top, the upper end of the first arc ignition angle and the upper end of the second arc ignition angle are relatively far away from each other, the lower end of the first arc ignition angle and the lower end of the second arc ignition angle are relatively close to each other, and the horizontal outer contour of the first arc ignition angle and the horizontal outer contour of the second arc ignition angle are gradually reduced from bottom to top.

In another preferred embodiment, the circuit breaker body comprises at least a fixed contact and a movable contact, the fixed contact and the movable contact are close to each other and close to each other or far away from each other to break; and when the circuit is broken, the static contact is arranged close to the lower end of the first arc ignition angle, and the moving contact is arranged close to the lower end of the second arc ignition angle.

In another preferred embodiment, the circuit breaker main body further includes: the arc extinguishing chamber is arranged on the upper portion of the bearing frame, an arc ignition port is formed in the upper portion of the bearing frame, the first arc ignition angle and the second arc ignition angle are respectively arranged on two sides of the arc ignition port, the electromagnetic driving device is installed in the bearing frame, the output end of the electromagnetic driving device is connected with the connecting rod mechanism, the connecting rod mechanism is connected with the movable contact, and the movable contact is driven by the electromagnetic driving device to be operatively close to or far away from the fixed contact.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following positive effects: by applying the invention, a breaker structure with a more reasonable structure is provided, and particularly, the arc can more easily enter the arc extinguish chamber without accumulation through the internal design of the corresponding arc extinguish chamber and the arrangement of the first arc ignition angle and the second arc ignition angle, so that the safety and the reliability of the breaker are further improved.

Drawings

Fig. 1 is an overall schematic view of an included arc angle arc extinguishing structure for a circuit breaker according to the present invention;

fig. 2 is a cross-sectional view of an included arc angle arc extinguishing structure for a circuit breaker according to the present invention;

fig. 3 is an internal partial view of an included arc angle arc extinguishing structure for a circuit breaker according to the present invention;

fig. 4 is a top perspective view of an included arc angle arc extinguishing structure for a circuit breaker of the present invention.

In the drawings:

1. a circuit breaker main body; 2. a first arc striking angle; 3. a second arc striking angle; 4. an arc extinguishing chamber; 41. an accommodating space; 411. a first receptacle portion; 412. a second receptacle portion; 413. a third receptacle portion; 42. a first plate group; 43. a second plate group; 421. a first grid sheet; 422. a U-shaped notch; 431. a second grid sheet; 432. a V-shaped notch; 44. a top plate; 45. connecting plates; 11. static contact; 12. a moving contact; 13. a load-bearing frame; 14. an electromagnetic drive device; 15. a link mechanism; 16. an arc striking port; 17. a first corner seat; 18. a second corner seat.

Detailed Description

The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.

As shown in fig. 1 to 4, an included arc angle quenching structure for a circuit breaker according to a preferred embodiment includes: the circuit breaker comprises a circuit breaker main body 1, a first arc striking angle 2, a second arc striking angle 3 and an arc extinguishing chamber 4; the circuit breaker comprises a circuit breaker main body 1, an arc extinguishing chamber 4, a first arc ignition angle 2, a second arc ignition angle 3, an accommodating space 41, a first arc ignition angle 2, a second arc ignition angle 3 and a third arc ignition angle, wherein the first arc ignition angle 2 and the second arc ignition angle 3 are both arranged on the circuit breaker main body 1; the first arc ignition angle 2 and the second arc ignition angle 3 are jointly used for guiding electric arcs generated when the circuit breaker main body 1 is broken, an included angle is formed between the first arc ignition angle 2 and the second arc ignition angle 3, and the included angle is 60 degrees to 120 degrees.

Further, as a preferred embodiment, the first angle seat 17 and the second angle seat 18 are both embedded in the upper portion of the circuit breaker main body 1, the upper end of the first angle seat 17 is fixedly connected to the first arc angle 2, the lower end of the first angle seat 17 is in contact with the stationary contact 11, the upper end of the second angle seat 18 is fixedly connected to the second arc angle 3, and the lower end of the second angle seat 18 faces the stationary contact 11.

Further, when the circuit breaker main body 1 performs a power-off operation, the moving contact 12 moves towards the separation direction of the fixed contact 11 to break current, at this time, an electric arc is generated between the fixed contact 11 and the moving contact 12, along with the increase of the separation distance between the moving contact 12 and the fixed contact 11, the electric arc directly and rapidly guides the electric arc to a position between the first arc-striking angle 2 and the second arc-striking angle 3 along the first corner seat 17 and the second corner seat 18, the electric arc at this time fully enters the arc-extinguishing chamber 4, due to the effect of heat energy, the electric arc upwardly enters the accommodating space 41, and through the division of the plurality of first plate groups 42 and the second plate groups 43, the electric arc energy is rapidly reduced, the residual energy is externally connected and dissipated through a gap between the first grid 421 or the second grid 431 of the arc-extinguishing chamber 4, and the electric arc energy is rapidly reduced to zero, so that an arc-extinguishing effect is achieved.

Further, as a preferred embodiment, a first oblique edge is formed on one side of the first arc ignition angle 2 close to the second arc ignition angle 3, a second oblique edge is formed on one side of the second arc ignition angle 3 close to the first arc ignition angle 2, the first oblique edge and the second oblique edge are both obliquely arranged relative to the vertical direction, and the extension line of the first oblique edge and the extension line of the second oblique edge intersect to form the included angle.

Further, as a preferred embodiment, the above-mentioned angle is preferably 75 °.

Further, as a preferred embodiment, a certain gap is formed between the inner wall of the accommodating space 41 and the first arc-striking angle 2 and the second arc-striking angle 3, and the accommodating space 41 includes a first accommodating portion 411, a second accommodating portion 412 and a third accommodating portion which are sequentially communicated from top to bottom; the inner contour of the second accommodating portion 412 is gradually increased from top to bottom, and the inner contour of the third accommodating portion 413 is gradually decreased from top to bottom.

Further, as a preferred embodiment, the upper portions of the first arc ignition angle 2 and the second arc ignition angle 3 are both disposed toward the inner side of the second accommodating portion 412, and the lower portions of the first arc ignition angle 2 and the second arc ignition angle 3 are both disposed in the third accommodating portion 413.

Further, as a preferred embodiment, the arc extinguishing chamber 4 includes: a plurality of first plate groups 42 and a plurality of second plate groups 43, a plurality of first plate groups 42 stack in proper order by lower supreme and set up on circuit breaker main part 1, a plurality of second plate groups 43 stack in proper order by lower supreme and set up on first plate group 42, form second accommodation space 41 and third accommodation space 41 in a plurality of first plate groups 42, form first accommodation space 41 in a plurality of second plate groups 43.

Further, as a preferred embodiment, each first plate group 42 includes: two first grid sheets 421 which are positioned on the same horizontal plane and oppositely arranged, wherein one end of each first grid sheet 421 is inwards concave to form a U-shaped notch 422, the two U-shaped notches 422 of each first plate group 42 are oppositely arranged, and a second accommodating part 412 and a third accommodating part 413 are formed among the plurality of U-shaped notches 422; the inner contour of the U-shaped notches 422 in the first plate groups 42 is increased from bottom to top and then decreased.

Further, as a preferred embodiment, each second plate group 43 includes: two second grid sheets 431 which are positioned on the same horizontal plane and are oppositely arranged, one end of each second grid sheet 431 is inwards concave to form a V-shaped notch 432, the two V-shaped notches 432 of each second plate group 43 are oppositely arranged, and a first accommodating part 411 is formed among the V-shaped notches 432.

Further, as a preferred embodiment, the first accommodating portion 411 is a channel extending along the vertical direction, and the horizontal section of the channel is a diamond shape.

Further, as a preferred embodiment, the second accommodating portion 412 is a cavity with a narrow top and a narrow bottom and a wide middle, and the horizontal cross section of the cavity is a rounded rectangle.

Further, as a preferred embodiment, a gap is formed between every two adjacent first gate sheets 421 or two adjacent second gate sheets 431.

Further, as a preferred embodiment, the arc extinguishing chamber 4 further includes: roof 44 and a plurality of even board 45, roof 44 fixed mounting all is provided with a plurality of even boards 45 along the outer fringe in a plurality of first board group 42 the upper surface of the top in a plurality of first board group 42, all is provided with a plurality of even boards 45 along the outer fringe between every two adjacent first board groups 42, all is provided with a plurality of even boards 45 along the outer fringe between every two adjacent second board groups 43, is provided with a plurality of even boards 45 along the outer fringe between a first board group 42 and a second board group 43 that are close to mutually.

Further, as an embodiment of a preferred embodiment, the first arc ignition angle 2 and the second arc ignition angle 3 are symmetrically disposed in the accommodating space 41, the first arc ignition angle 2 and the second arc ignition angle 3 are both inclined and extended from bottom to top, the upper end of the first arc ignition angle 2 and the upper end of the second arc ignition angle 3 are relatively far away from each other, the lower end of the first arc ignition angle 2 and the lower end of the second arc ignition angle 3 are relatively close to each other, and the horizontal outer contour of the first arc ignition angle 2 and the horizontal outer contour of the second arc ignition angle 3 are both gradually reduced from bottom to top.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope and the implementation manner of the present invention.

The present invention also has the following embodiments in addition to the above:

in a further embodiment of the present invention, the circuit breaker body 1 comprises at least a fixed contact 11 and a movable contact 12, the fixed contact 11 and the movable contact 12 are operatively close to each other to be connected or far away to be disconnected; and when the circuit is broken, the static contact 11 is arranged close to the lower end of the first arc ignition angle 2, and the movable contact 12 is arranged close to the lower end of the second arc ignition angle 3.

In a further embodiment of the present invention, the circuit breaker main body 1 further includes: the arc extinguishing chamber 4 is arranged on the upper portion of the bearing frame 13, an arc striking port 16 is arranged on the upper portion of the bearing frame 13, the first arc striking angle 2 and the second arc striking angle 3 are respectively arranged on two sides of the arc striking port 16, the electromagnetic driving device 14 is installed in the bearing frame 13, the output end of the electromagnetic driving device 14 is connected with the connecting rod mechanism 15, the connecting rod mechanism 15 is connected with the movable contact 12, and the movable contact 12 is driven by the electromagnetic driving device 14 to be operatively close to or far away from the fixed contact 11.

In a further embodiment of the present invention, the arc striking port 16 is coaxially disposed with the accommodating space 41.

In a further embodiment of the present invention, the method further comprises: and the output end of the spring resetting mechanism is abutted against one side of the moving contact 12 far away from the electromagnetic driving device 14, and the spring resetting mechanism is used for pushing the moving contact 12 to be far away from the static contact 11 after the electromagnetic driving device 14 loses power.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.