CN217933690U

CN217933690U - Arc extinguish chamber structure of circuit breaker

Info

Publication number: CN217933690U
Application number: CN202222089898.7U
Authority: CN
Inventors: 李帮团
Original assignee: Zhejiang Meywon Electric Technology Co ltd
Current assignee: Zhejiang Meywon Electric Technology Co ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-11-29
Anticipated expiration: 2032-08-09

Abstract

The utility model provides an arc extinguishing chamber structure of circuit breaker, which belongs to the technical field of circuit breakers and comprises a plurality of arc extinguishing grid pieces which are separated by a certain distance and are arranged in parallel, and a fixing piece for connecting each arc extinguishing grid piece, and also comprises at least one arc striking insertion piece, wherein the arc striking insertion piece comprises at least two arc guiding ends which can be inserted between the arc extinguishing grid pieces and an arc striking end which is used for leading electric arc to the arc guiding ends; the arc striking inserting piece which can be inserted into the arc extinguishing chamber is arranged in the utility model, so that the electric arc generated by the moving and static contacts can be quickly introduced between the arc extinguishing grid pieces to be extinguished, the arc striking and extinguishing capacity of the circuit breaker is improved, and the breaking capacity of the circuit breaker is enhanced; and the position of the arc striking inserting sheet can be adjusted, the best arc striking effect is guaranteed, the practicability is high, and the application range is wide.

Description

Arc extinguish chamber structure of circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to explosion chamber structure of 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 within a prescribed time. The arc extinguishing chamber is an important component of the circuit breaker, and has an especially important influence on the arc extinguishing performance.

For example, in patent publication No. CN213304048U, the generated electric arc enters the arc extinguishing chamber through the arc striking plate and is extinguished, but with the improvement of the breaking capacity requirement of the circuit breaker, the breaking capacity of the circuit breaker is limited because only the arc striking capacity of the arc striking plate cannot be met gradually.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the shortcoming and not enough that prior art exists, and provide an explosion chamber structure of circuit breaker.

The utility model discloses the technical scheme who takes as follows: the utility model provides an explosion chamber structure of circuit breaker, includes a plurality of equidistant and parallel arrangement's of being separated from arc extinguishing bars piece and the stationary blade that is used for connecting each arc extinguishing bars piece of being separated from, it still includes at least one striking inserted sheet, the striking inserted sheet is including at least two arc ends that lead that can insert between the arc extinguishing bars piece and the striking end that is used for leading electric arc to the arc end.

The arc striking insertion piece comprises two arc guiding ends which can be inserted between the arc extinguishing grid pieces, and at least two arc extinguishing grid pieces are arranged between the two arc guiding ends.

The arc striking inserted sheet is the electrically conductive material shaping of bending, and it is still including having elastic bending end, bending end makes two lead and has adjustable elasticity contained angle between the arc end, the elasticity contained angle provides elasticity resilience force for two arc ends and makes it connect on the arc extinguishing bars piece.

The bending end is provided with at least one vent hole.

The arc extinguishing grid plate comprises a V-shaped opening, a groove connected with the fixing plate and a bump arranged in the groove.

The arc extinguishing bars piece both sides all are provided with at least one the recess, the stationary blade is fixed in the recess, the stationary blade is including the joint mouth that is connected with the lug of every arc extinguishing bars piece.

The arc end of leading of striking inserted sheet be provided with the logical groove of V type opening intercommunication.

The striking inserted sheet still including with the first spacing portion of stationary blade joint, the stationary blade be provided with the spacing portion of all first spacing portion complex second.

The first spacing portion is arranged on a spacing clamping block on the arc striking inserting piece, and the second spacing portion is arranged on a spacing clamping groove on the fixing piece.

Each arc guiding end of the arc striking insertion piece is provided with a limiting elastic piece used for enabling the arc guiding end to be opposite to the elastic limiting of the arc extinguishing grid piece.

The utility model has the advantages as follows: the arc striking inserting piece which can be inserted into the arc extinguishing chamber is arranged in the utility model, so that the electric arc generated by the moving and static contacts can be quickly introduced between the arc extinguishing grid pieces to be extinguished, the arc striking and extinguishing capacity of the circuit breaker is improved, and the breaking capacity of the circuit breaker is enhanced; and the position of the arc striking inserting sheet can be adjusted, the best arc striking effect is guaranteed, the practicability is high, and the application range is wide.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments or the prior art descriptions will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, it still belongs to the scope of the present invention to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a schematic diagram of a first embodiment;

FIG. 2 is a partial exploded view of the first embodiment;

FIG. 3 is a schematic view of an arc striking insert according to the second embodiment;

FIG. 4 is a schematic view of a third embodiment;

FIG. 5 is a schematic view of the fourth embodiment;

FIG. 6 is a schematic view of an arc starting insert in accordance with the fifth embodiment;

in the figure, 1-arc extinguishing grid piece, 101-V-shaped opening, 102-groove, 103-bump, 2-fixing piece, 21-clamping interface, 22-limiting clamping groove, 3-arc striking insertion piece, 31-arc striking end, 311-through groove, 312-limiting elastic piece, 32-arc striking end, 33-limiting clamping block, 34-bending end, 341-vent hole and 35-elastic included angle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be construed as limitations to the embodiments of the present invention, and the following embodiments do not describe the embodiments one by one.

The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.

The first embodiment is as follows:

as shown in fig. 1 and 2, an arc extinguishing chamber structure of a circuit breaker includes a plurality of arc extinguishing bars 1 arranged in parallel at a certain interval, a fixing piece 2 for connecting each arc extinguishing bar 1, and at least one arc striking inserting piece 3, wherein the arc striking inserting piece 3 includes at least two arc guiding ends 31 capable of being inserted between the arc extinguishing bars 1 and an arc striking end 32 for guiding an arc to the arc guiding ends 31; in this embodiment, the striking inserted sheet 3 is including two arc ends 31, can bring the electric arc that the sound contact produced into fast and extinguish between the arc extinguishing bars piece 1, promotes the striking arc extinguishing ability of circuit breaker to strengthen the disjunction ability of circuit breaker.

Arc starting inserted sheet 3 is the shaping of conducting material bending, and it is still including having elastic end 34 of bending, end 34 of bending makes two lead and has adjustable elasticity contained angle 35 between the arc end 31, elasticity contained angle 35 is for two arc ends 31 of leading provide elasticity resilience force and make it connect on the arc extinguishing bars piece 1. Specifically, the arc striking insertion piece 3 is formed by bending a conductive metal sheet, if the elastic included angle 35 is large, the distance between the two arc guiding ends 31 can be reduced by pressing, the arc striking insertion piece is inserted into the gap of the arc extinguishing grid piece 1, the arc guiding ends 31 can be propped against the arc extinguishing grid piece 1 due to resilience force, if the elastic included angle 35 is small, the distance between the two arc guiding ends 31 can be propped by pressing, the arc extinguishing grid piece 1 is inserted, and then the arc guiding ends 31 can be clamped on the outer wall of the arc extinguishing grid piece 1 due to resilience force, so that the connection stability of the arc striking insertion piece 3 and the arc extinguishing grid piece 1 can be improved; in addition, the arc striking inserting sheet 3 of the structure can adapt to the situation that the distances between arc extinguishing grid pieces in arc extinguishing chambers of different specifications are different, the position of the arc striking inserting sheet 3 can be adjusted, the optimal arc striking effect is guaranteed, and the arc striking device is high in practicability and wide in application range.

The arc striking insertion piece 3 comprises two arc guiding ends 31 which can be inserted between the arc extinguishing grid pieces 1, and the two arc guiding ends 31 comprise at least two arc extinguishing grid pieces 1, in the embodiment, two arc guiding ends 31 are separated by two arc extinguishing grid pieces 1.

The circuit breaker comprises a moving contact and a fixed contact, the arc striking end 32 faces the moving contact and fixed contact action position, electric arcs generated at the moving contact and the fixed contact can quickly enter an arc extinguish chamber along the arc striking inserting sheet 3, and the bending angle between the arc striking end 32 and the arc guiding end 31 is an obtuse angle.

Arc extinguishing bars piece 1 including V type opening 101, with recess 102 and the lug 103 of setting in recess 102 that stationary blade 2 is connected, 1 both sides of arc extinguishing bars piece all are provided with at least one recess 102, in this embodiment, 1 both sides of arc extinguishing bars piece all are provided with two recesses 102, stationary blade 2 is fixed in recess 102, stationary blade 2 is including the joint mouth 21 that is connected with the lug 103 of every arc extinguishing bars piece 1, and explosion chamber overall structure is simple, the batch production of being convenient for.

Example two:

as shown in fig. 3, the other structure of this embodiment is the same as that of the first embodiment, at least one vent hole 341 is provided only at the bent end 34, and in this embodiment, one vent hole 341 is provided at the middle of the bent end 34. Because when the electric current is disconnected, can produce a large amount of high temperature high pressure ionization gases when following electric arc burning, these gases need cool off fast, compound, disappear freely and in time discharge from the explosion chamber in the explosion chamber, set up air vent 341 and can introduce the explosion chamber with ionization gas, promote the breaking capacity.

Example three:

as shown in fig. 4, in the present embodiment, the other structure is the same as that of the embodiment, and only the arc guiding end 31 of the arc initiation inserting piece 3 is further provided with a through groove 311 communicated with the V-shaped opening 101, so as to facilitate the circulation of ionized gas in the arc extinguishing chamber, so that the ionized gas is rapidly discharged, and the breaking capacity is improved.

Example four:

as shown in fig. 5, the other structures in this embodiment are the same as those in the embodiment, and the difference is that the arc striking insertion piece 3 further includes a first limiting portion clamped with the fixing piece 2, and the fixing piece 2 is provided with a second limiting portion matched with all the first limiting portions. Specifically, the first limiting part is a limiting clamping block 33 arranged on the arc striking insertion piece 3, and the second limiting part is a limiting clamping groove 22 arranged on the fixing piece 2; adopt this structure to further guarantee the stability of being connected between striking inserted sheet 3 and the explosion chamber, avoid striking inserted sheet 3 to drop in the circuit breaker use.

Example five:

as shown in fig. 6, the other structures in this embodiment are the same as those in the embodiment, except that each arc guiding end 31 of the arc striking insertion sheet 3 is provided with a position-limiting elastic sheet 312 for elastically limiting the arc guiding end 31 relative to the arc chute pieces 1, and when the arc guiding end 31 is inserted between the arc chute pieces 1, the position-limiting elastic sheet 312 will abut against the arc chute pieces 1 on one side, so as to prevent the arc striking insertion sheet 3 from separating from the arc chute pieces 1 in the use process of the circuit breaker.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.

Claims

1. The utility model provides an explosion chamber structure of circuit breaker, includes a plurality of arc extinguishing bars piece (1) that are separated by a determining deviation and parallel arrangement of each other and is used for connecting stationary blade (2) of each arc extinguishing bars piece (1), its characterized in that still includes at least one striking inserted sheet (3), striking inserted sheet (3) are including two at least leading arc end (31) that can insert between arc extinguishing bars piece (1) and be used for leading arc end (32) that arc leads arc end (31).

2. The arcing chamber structure of a circuit breaker according to claim 1, wherein said striking blade (3) comprises two arc guiding ends (31) that can be inserted between said arc chute plates (1), and at least two arc chute plates (1) are spaced between said two arc guiding ends (31).

3. The arc extinguish chamber structure of the circuit breaker according to claim 2, wherein the arc-striking inserting piece (3) is formed by bending a conductive material, and further comprises a bending end (34) with elasticity, the bending end (34) enables an adjustable elastic included angle (35) to be formed between the two arc-guiding ends (31), and the elastic included angle (35) provides elastic resilience force for the two arc-guiding ends (31) to enable the two arc-guiding ends to be connected to the arc-extinguishing grid piece (1).

4. Arc chute arrangement of a circuit breaker according to claim 3, characterized in that said bent end (34) is provided with at least one vent hole (341).

5. The arcing chamber structure of a circuit breaker according to claim 1, wherein said arc chute (1) comprises a V-shaped opening (101), a groove (102) connected to said stator (2), and a protrusion (103) disposed in said groove (102).

6. The arc extinguish chamber structure of the circuit breaker according to claim 5, wherein at least one groove (102) is formed on each side of the arc extinguish grid (1), the fixing plate (2) is fixed in the groove (102), and the fixing plate (2) comprises a clamping interface (21) connected with the convex block (103) of each arc extinguish grid (1).

7. Arc extinguishing chamber structure of a circuit breaker according to claim 5, characterized in that the arc guiding end (31) of the arc initiation tab (3) is provided with a through slot (311) communicating with the V-shaped opening (101).

8. The arc extinguish chamber structure of the circuit breaker according to claim 1, wherein the arc striking insert (3) further comprises a first limiting part clamped with the fixing plate (2), and the fixing plate (2) is provided with a second limiting part matched with all the first limiting parts.

9. The arc extinguish chamber structure of a circuit breaker according to claim 8, wherein the first limiting part is a limiting clamping block (33) arranged on the arc striking inserting piece (3), and the second limiting part is a limiting clamping groove (22) arranged on the fixing piece (2).

10. The arc extinguish chamber structure of the circuit breaker according to claim 1, wherein each arc guide end (31) of the arc striking insertion piece (3) is provided with a limit spring piece (312) for elastically limiting the arc guide end (31) relative to the arc extinguishing grid piece (1).