CN213878003U - Arc extinguish chamber of circuit breaker - Google Patents
Arc extinguish chamber of circuit breaker Download PDFInfo
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- CN213878003U CN213878003U CN202022499482.3U CN202022499482U CN213878003U CN 213878003 U CN213878003 U CN 213878003U CN 202022499482 U CN202022499482 U CN 202022499482U CN 213878003 U CN213878003 U CN 213878003U
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Abstract
An arc extinguish chamber of a circuit breaker belongs to the technical field of circuit breakers. The arc extinguishing chamber comprises a reversed L-shaped arc extinguishing grid sheet assembly consisting of a plurality of upper arc extinguishing grid sheet groups which are transversely extended and arranged and a plurality of lower arc extinguishing grid sheet groups which are vertically extended and arranged, wherein each arc extinguishing grid sheet group in the plurality of upper arc extinguishing grid sheet groups and the plurality of lower arc extinguishing grid sheet groups consists of one arc extinguishing grid sheet or a plurality of arc extinguishing grid sheets which are arranged in parallel, and the right arc extinguishing grid sheet group in the plurality of upper arc extinguishing grid sheet groups is offset to the right in turn by an angle relative to the left arc extinguishing grid sheet group which is adjacent to the right arc extinguishing grid sheet group; the upper end arc-extinguishing grid plate group in the plurality of lower arc-extinguishing grid plate groups is sequentially offset upwards by an angle relative to the lower end arc-extinguishing grid plate group adjacent to the upper end arc-extinguishing grid plate group. The advantages are that: the number of arc extinguishing grids is increased as much as possible in a limited space, so that the circuit breaker can further effectively elongate and extinguish the arc generated when the contact is disconnected, and the breaking performance of the circuit breaker is improved.
Description
Technical Field
The utility model belongs to the technical field of the circuit breaker, concretely relates to explosion chamber of circuit breaker.
Background
The circuit breaker is the most important distribution equipment in a low-voltage distribution system, along with the continuous improvement of the requirements of power supply and power transmission and distribution equipment in power engineering, the performance requirements for circuit protection switches are higher and higher, and the miniaturization, high performance, modularization and high reliability are the main development directions of the molded case circuit breakers at the present stage.
The arc extinguishing chamber among the molded case circuit breaker plays the effect of lengthening, breaking and arc extinguishing of the electric arc generated when the contact breaks off during short-circuit fault, for realizing the high voltage and high breaking capacity of the low-voltage circuit breaker, methods such as enlarging the arc extinguishing chamber, lengthening the contact length to enlarge the contact opening distance, connecting a plurality of breakpoints in series and the like are generally adopted, although the breaking capacity of the molded case circuit breaker can be improved by the methods, the size of the molded case circuit breaker can be obviously increased, the market demand of the molded case circuit breaker is reduced, the cost of the circuit breaker can be increased, and the market competitiveness is reduced. In view of the problems of the prior art, the applicant provides an arc extinguishing chamber of a circuit breaker, which combines years of design and use experience in the related manufacturing field, so as to overcome the defects of the circuit breaker.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an explosion chamber of circuit breaker specifically is through the improvement to arc extinguishing bars piece layout structure in the explosion chamber, increases arc extinguishing bars piece quantity as far as possible in limited space for the electric arc that the circuit breaker further produced when breaking off the contact effectively lengthens, extinguishes, thereby promotes the breaking performance of circuit breaker.
The utility model aims at achieving the purpose, an arc extinguish chamber of a circuit breaker, the arc extinguish chamber includes a set of arc extinguish grid piece group of the L-shape that comprises a plurality of upper arc extinguish grid piece groups that transversely extend to arrange and a plurality of lower arc extinguish grid piece groups that vertically extend to arrange, wherein each arc extinguish grid piece group in a plurality of upper arc extinguish grid piece groups and a plurality of lower arc extinguish grid piece groups is formed by a plurality of arc extinguish grid pieces in parallel arrangement respectively, and the right arc extinguish grid piece group in a plurality of upper arc extinguish grid piece groups is offset angle to the right in proper order relative to the left arc extinguish grid piece group adjacent to the right arc extinguish grid piece group, and the offset angle is bigger and bigger; the upper end arc-extinguishing grid plate group in the lower arc-extinguishing grid plate groups is sequentially offset upwards by an angle relative to the lower end arc-extinguishing grid plate group adjacent to the upper end arc-extinguishing grid plate group, and the offset angle is larger and larger.
In a specific embodiment of the present invention, the arc-extinguishing grid pieces of the rightmost arc-extinguishing grid piece group in the upper arc-extinguishing grid piece groups and the arc-extinguishing grid pieces of the topmost arc-extinguishing grid piece group in the lower arc-extinguishing grid piece groups are arranged substantially in parallel.
In another specific embodiment of the present invention, the arc-extinguishing grid plates in the leftmost arc-extinguishing grid plate group in the upper arc-extinguishing grid plate groups are vertically installed and horizontally arranged to extend, the arc-extinguishing grid plates in the lowermost arc-extinguishing grid plate group in the lower arc-extinguishing grid plate groups are horizontally installed and vertically arranged to extend, and the leftmost arc-extinguishing grid plate group and the lowermost arc-extinguishing grid plate group are perpendicular to each other.
In another specific embodiment of the present invention, the gap between the grid ends of one side of each arc-extinguishing grid in the upper arc-extinguishing grid groups and the lower arc-extinguishing grid groups, which is close to the moving contact, is equal.
The utility model discloses owing to adopted above-mentioned structure, the beneficial effect who has: firstly, a reversed L-shaped arc-extinguishing grid piece assembly is formed by adopting a plurality of upper arc-extinguishing grid piece groups which are transversely arranged and a plurality of lower arc-extinguishing grid piece groups which are vertically arranged by changing the layout of arc-extinguishing grid pieces in an arc-extinguishing chamber, and the angle of the right arc-extinguishing grid piece group in the plurality of upper arc-extinguishing grid piece groups which is sequentially offset clockwise and rightwards relative to the left arc-extinguishing grid piece group is larger and larger; the angle of the upper end arc-extinguishing grid plate group in the plurality of lower arc-extinguishing grid plate groups, which is upwards and anticlockwise offset relative to the lower end arc-extinguishing grid plate group in sequence, is larger and larger, the number of the arc-extinguishing grid plates is increased as much as possible, the space utilization rate is improved, and the circuit breaker can further effectively elongate, break and extinguish the electric arc generated when the contact is disconnected, so that the breaking performance of the circuit breaker is improved; secondly, only the layout of arc extinguishing grid pieces in the arc extinguishing chamber is changed, the volume of the molded case circuit breaker is not obviously increased, and the cost is not obviously increased, so that the circuit breaker is optimized on the basis of the original circuit breaker, and the cost performance and the market competitiveness of the circuit breaker are improved; thirdly, the structure is simple, and the manufacture and the assembly are easy.
Drawings
Fig. 1 is a layout diagram of arc extinguishing grids in an embodiment of an arc extinguishing chamber of the circuit breaker.
Fig. 2 is a layout diagram of arc extinguishing grids in another embodiment of the arc extinguishing chamber of the circuit breaker of the present invention.
In the figure: 2. static contact; 3. a moving contact; 4. arc extinguishing chamber, 41, upper arc extinguishing grid group, 411, leftmost arc extinguishing grid group, 412, rightmost arc extinguishing grid group, 42, lower arc extinguishing grid group, 421, lowermost arc extinguishing grid group, 422 and uppermost arc extinguishing grid group.
Detailed Description
The following detailed description of the embodiments of the present invention will be described with reference to the accompanying drawings, but the description of the embodiments by the applicant is not intended to limit the technical solutions, and any changes made according to the present invention rather than the essential changes should be considered as the protection scope of the present invention.
In the following description, any concept relating to the directions or orientations of up, down, left, right, front, and rear is based on the position shown in the corresponding drawings, and thus should not be construed as particularly limiting the technical solution provided by the present invention.
In a plastic case circuit breaker, at least one fixed contact portion (e.g., a fixed contact) and at least one movable contact portion (e.g., a movable contact) are generally included for each pole, and the fixed contact portion and the movable contact portion are connected to or disconnected from each other at the time of closing/opening of the circuit breaker, while an arc extinguishing device for extinguishing an arc generated when the movable contact portion is connected or disconnected and a set of operating mechanism for operating the movement of the movable contact portion to drive the movable contact portion to be connected or disconnected with the fixed contact portion are further provided in a contact area.
The utility model relates to a fixed contact part, movable contact part and arc control device in this type of circuit breaker, it is specific, as shown in fig. 1, fig. 2, the utility model provides an explosion chamber of circuit breaker, the circuit breaker includes explosion chamber 4 and contact system, contact system is including the static contact 2 and the moving contact 3 of mutually supporting, moving contact 3 rotationally is located static contact 2's top to contact with static contact 2 or the break-make of phase separation control circuit breaker circuit. Specifically, a part of the fixed contact 2 is located below the arc extinguish chamber 4, one end of the fixed contact 2 is located at one side of the arc extinguish chamber 4, the movable contact 3 is located above the other end of the fixed contact 2 and opposite to the arc extinguish chamber 4, and the free end of the movable contact 3 can be in contact with or separated from the end of the fixed contact 2 under the operation of the operating mechanism, so that the low-voltage circuit breaker can be switched on and off.
As shown in fig. 1 and 2, the arc extinguishing chamber 4 includes a set of bar-shaped arc-extinguishing grid plate assemblies formed by a plurality of upper arc-extinguishing grid plate groups 41 arranged in a transverse extending manner and a plurality of lower arc-extinguishing grid plate groups 42 arranged in a vertical extending manner, which is illustrated in the drawings in a schematic manner, regardless of the direction, i.e., the bar is inverted into the L, or is rotated by a certain angle, which is also within the scope of the present invention; moreover, the reverse corner portion is not necessarily a right angle, and may be an acute angle or an obtuse angle, or may be an arc transition, and such similar modifications are within the scope of the present invention. Each of the upper arc-extinguishing grid groups 41 and the lower arc-extinguishing grid groups 42 is respectively composed of one arc-extinguishing grid or is formed by arranging a plurality of arc-extinguishing grid in parallel, and the right arc-extinguishing grid group in the upper arc-extinguishing grid groups 41 is offset to the right in turn by an angle relative to the left adjacent arc-extinguishing grid group; the upper arc chute plate group of the plurality of lower arc chute plate groups 42 is sequentially offset upwards by an angle relative to the lower arc chute plate group adjacent to the upper arc chute plate group. The arc-extinguishing grid pieces of the rightmost arc-extinguishing grid piece group 412 in the plurality of upper arc-extinguishing grid piece groups 41 and the arc-extinguishing grid pieces of the topmost arc-extinguishing grid piece group 422 in the plurality of lower arc-extinguishing grid piece groups 42 are arranged approximately in parallel. Preferably, the offset angles are equiangular. The grid sheet ends of one side of each arc extinguishing grid sheet close to the moving contact 3 in each arc extinguishing grid sheet group are spaced at equal intervals.
Fig. 1 shows an embodiment of the arc-extinguishing chamber 4, in which each of the upper arc-extinguishing grid set 41 and the lower arc-extinguishing grid set 42 is formed by arranging a plurality of arc-extinguishing grid pieces in parallel. The arc-extinguishing grid pieces in the leftmost arc-extinguishing grid piece group 411 in the plurality of upper arc-extinguishing grid piece groups 41 are vertically installed and transversely arranged to extend, the arc-extinguishing grid pieces in the lowermost arc-extinguishing grid piece group 421 in the plurality of lower arc-extinguishing grid piece groups 42 are horizontally installed and vertically arranged to extend, and the leftmost arc-extinguishing grid piece group 411 and the lowermost arc-extinguishing grid piece group 421 are perpendicular to each other. Preferably, the arc-extinguishing grid pieces of the rightmost arc-extinguishing grid piece group 412 in the plurality of upper arc-extinguishing grid piece groups 41 and the arc-extinguishing grid pieces of the topmost arc-extinguishing grid piece group 422 in the plurality of lower arc-extinguishing grid piece groups 42 are arranged approximately in parallel, so that the rightmost arc-extinguishing grid piece group 412 in the plurality of upper arc-extinguishing grid piece groups 41 and the topmost arc-extinguishing grid piece group 422 in the plurality of lower arc-extinguishing grid piece groups 42 are butted at the diagonal of the arc-extinguishing chamber 4.
Fig. 2 shows another embodiment of the arc chute 4, in which each of the upper arc chute groups 41 and the lower arc chute groups 42 has only one arc chute. The right arc-extinguishing grid plate group in each upper arc-extinguishing grid plate group 41 is offset to the right by an angle relative to the left arc-extinguishing grid plate group adjacent to the right arc-extinguishing grid plate group, namely the arc-extinguishing grid plates in the upper arc-extinguishing grid plate group 41 are offset clockwise by an equal angle from left to right; the upper arc-extinguishing grid plate group in each lower arc-extinguishing grid plate group 42 is sequentially offset upwards by an angle relative to the lower arc-extinguishing grid plate group adjacent to the upper arc-extinguishing grid plate group, that is, the arc-extinguishing grid plates in the lower arc-extinguishing grid plate group 42 are sequentially offset anticlockwise by equal angles from bottom to top. The rightmost arc chute plate in the upper arc chute plate group 41 is approximately parallel to the topmost arc chute plate in the lower arc chute plate group 42. In short, the rightmost arc chute plate in the upper arc chute plate group 41 is the topmost arc chute plate in the lower arc chute plate group 42.
Of course, other embodiments are possible, in which each upper arc-extinguishing grid group 41 and each lower arc-extinguishing grid group 42 may be formed by combining and arranging a plurality of arc-extinguishing grid groups including a plurality of arc-extinguishing grid plates and a plurality of arc-extinguishing grid groups including only one arc-extinguishing grid plate.
Claims (4)
1. The arc extinguish chamber of the circuit breaker is characterized by comprising a reversed L-shaped arc extinguish grid sheet assembly consisting of a plurality of upper arc extinguish grid sheet groups which are transversely arranged in an extending way and a plurality of lower arc extinguish grid sheet groups which are vertically arranged in an extending way, wherein each arc extinguish grid sheet group in the plurality of upper arc extinguish grid sheet groups and the plurality of lower arc extinguish grid sheet groups is respectively formed by arranging a plurality of arc extinguish grid sheets in parallel, and the right arc extinguish grid sheet group in the plurality of upper arc extinguish grid sheet groups is sequentially offset to the right by an angle relative to the left arc extinguish grid sheet group adjacent to the right arc extinguish grid sheet group, and the offset angle is larger and larger; the upper end arc-extinguishing grid plate group in the lower arc-extinguishing grid plate groups is sequentially offset upwards by an angle relative to the lower end arc-extinguishing grid plate group adjacent to the upper end arc-extinguishing grid plate group, and the offset angle is larger and larger.
2. The arc chute of a circuit breaker as claimed in claim 1, wherein the arc chute plates of the rightmost arc chute plate group of said plurality of upper arc chute plate groups are substantially parallel to the arc chute plates of the topmost arc chute plate group of said plurality of lower arc chute plate groups.
3. The arc extinguishing chamber of the circuit breaker according to claim 1, wherein the arc extinguishing bars in the leftmost arc extinguishing bar group of the upper arc extinguishing bar groups are vertically installed and horizontally arranged to extend, the arc extinguishing bars in the lowermost arc extinguishing bar group of the lower arc extinguishing bar groups are horizontally installed and vertically arranged to extend, and the leftmost arc extinguishing bar group and the lowermost arc extinguishing bar group are perpendicular to each other.
4. The arc extinguish chamber of the circuit breaker as claimed in claim 1, wherein the ends of the arc extinguish grids in each of the upper arc extinguish grid set and the lower arc extinguish grid set, which are close to the movable contact, are equally spaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022499482.3U CN213878003U (en) | 2020-11-03 | 2020-11-03 | Arc extinguish chamber of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022499482.3U CN213878003U (en) | 2020-11-03 | 2020-11-03 | Arc extinguish chamber of circuit breaker |
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| CN213878003U true CN213878003U (en) | 2021-08-03 |
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| CN202022499482.3U Active CN213878003U (en) | 2020-11-03 | 2020-11-03 | Arc extinguish chamber of circuit breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113972117A (en) * | 2021-10-09 | 2022-01-25 | 江苏大全凯帆开关股份有限公司 | Multi-section arc extinguishing system for high voltage |
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2020
- 2020-11-03 CN CN202022499482.3U patent/CN213878003U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113972117A (en) * | 2021-10-09 | 2022-01-25 | 江苏大全凯帆开关股份有限公司 | Multi-section arc extinguishing system for high voltage |
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