CN202259109U - Arc extinguish chamber of frame-type circuit breaker - Google Patents
Arc extinguish chamber of frame-type circuit breaker Download PDFInfo
- Publication number
- CN202259109U CN202259109U CN2011204172742U CN201120417274U CN202259109U CN 202259109 U CN202259109 U CN 202259109U CN 2011204172742 U CN2011204172742 U CN 2011204172742U CN 201120417274 U CN201120417274 U CN 201120417274U CN 202259109 U CN202259109 U CN 202259109U
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- Prior art keywords
- arc
- sheet
- grid
- control device
- circuit breaker
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Abstract
The utility model discloses an arc extinguish chamber of a frame-type circuit breaker and belongs to low-voltage electrical equipment. The arc extinguish chamber comprises an arc isolating hood, grid sheets, an arc striking sheet, a first arc isolating wall and a second arc isolating wall, wherein the arc isolating hood is fixed at the tops of the first arc isolating wall and the second arc isolating wall; in order to increase air exhaust area and control the air exhaust direction of the arc isolating hood, on the premise that a strength requirement is met, more than one inclined air exhaust hole is formed along the transverse axial line of the arc isolating hood; and two ends of each grid sheet are connected with inner walls of the first arc isolating wall and the second arc isolating wall, and the grid sheets are placed in the arc extinguish chamber in a forward and reverse staggering mode. In order to elongate an electric arc, asymmetric grooves are formed in the middle of the lower end of each grid sheet; and in order to elongate the grid sheets, the tops of the grid sheets are limited so as not to be contacted with the inner wall of the arc isolating hood, the bottoms of the grid sheets are limited so as not to be contacted with the inner wall of the arc striking sheet, and the grid sheets are in stepped distribution along an inclined surface of the arc striking sheet. During practical application, by adoption of the arc extinguish chamber with the structure, the short circuit breaking capacity of the circuit breaker is improved from 80 kA to 120 kA.
Description
Technical field
The utility model relates to a kind of frame circuit breaker arc control device, belongs to low voltage equipment.
Background technology
In the course of action of fuser belt load disjunction, the voltage between the contact causes the air dielectric discharge, forms electric arc.Therefore in switches such as circuit breaker, contactor, arc control device all are set usually come extinguish arcs, thus the safe operation of assurance electric equipment.
Traditional arc control device cause the area of grid sheet too little because the gas-permeable channels of arc cover is long, and its arc quenching effect of practical application proof is unsatisfactory, have had a strong impact on the breaking capacity of circuit breaker.
Summary of the invention
In view of this, the utility model provides a kind of arc quenching effect good frame circuit breaker arc control device, can under the prerequisite that does not increase volume, increase grid sheet area, improves arc extinction performance, realizes high breaking.
These arc control device comprise arc cover, grid sheet, striking sheet, first arc separating wall and second arc separating wall.Its annexation is: first, second arc separating wall top and arc separating wall removably connect.The two ends of grid sheet are connected with the inwall of first, second arc separating wall respectively, and two or more grid sheets are the wrong installation of a positive reciprocal cross in arc control device.The striking sheet is the laminated structure of bending, one side vertically, another side is to the arc control device inner inclination, and forms the obtuse angle with vertical plane, the end of striking sheet and two arc separating walls is affixed.
Both sides, said arc cover bottom surface are processed with groove, are used for docking with the convexity at arc separating wall top, realize the location to the arc cover.The thickness of arc cover considers according to the requirement of strength of arc control device, and the gas that produces with not by disjunction the time is washed open or damaged and exceeds, generally between 10mm-20mm.In order to increase exhaust channel length; Control the emission direction of air-flow in the arc cover simultaneously; Under the prerequisite of proof strength, be processed with one with upper air-vent along arc cover transversal line, and the longitudinal hole that one or more and steam vent of processing connects in its side.In practice, consider control to discharge directions, be skewed slot, V-shape groove or X type groove with the shaped design of steam vent, the tilt angle ranges between the said skewed slot and the longitudinal axis is 100 °-170 °; One side of said V-shape groove or X type groove is vertical, opposite side and vertical axis tilt, and tilt angle ranges is 100 °-170 °.Under the prerequisite that does not influence arc cover intensity, the leaving area of steam vent is the bigger the better.Under the prerequisite that guarantees arc cover intensity, the area of steam vent account for whole arc cover long-pending more than 30%.
Said grid sheet is a rectangle structure, and the grid sheet helps extinguish arcs to the cooling of electric arc, is not influencing arc motion and can not cause the length that increases the grid sheet under the prerequisite of grid sheet short circuit as far as possible.Exceeding not contact with arc cover inwall in grid sheet top, exceeds not contact with striking sheet inwall in the bottom, becomes stepped arrangement along the inclined-plane of striking sheet, and the length of grid sheet is the 2/3-5/6 of arc control device height.
The centre position of grid sheet lower end is processed with asymmetric groove; Groove is made up of two sections breach, and first section breach is the rectangle that lateral symmetry is arranged, second section breach is set at the top of first section breach; Second section breach is the trapezoidal of vertical asymmetric layout, and its afterbody is semicircle.The top of the groove on each grid sheet is at sustained height, and the length of groove is and the 1/4-1/2 of striking sheet adjacent gate leaf length that wherein the length of first section breach is the 1/2-7/10 of groove length.Between second section breach and the first section breach by the circular arc smooth transition, between first section breach and the grid sheet base by the circular arc smooth transition.Adopt the grid sheet of this structure can effectively elongate electric arc, improve the breaking capacity of circuit breaker.
The connected mode of grid sheet and first, second arc separating wall can be riveted or peg graft in the arc control device of the utility model.When adopting inserting mode, at two pairs or more longitudinal socket of inwall processing of two arc separating walls, two or more grid sheets one positive one instead are inserted in the slot successively, and utilize the stopper slot of the terminal left and right sides of grid sheet that its position is fixed.The grid sheet is the wrong installation of a positive reciprocal cross in arc control device, and the bossing of groove and sunk part are staggered each other, can effectively elongate electric arc.
Beneficial effect
Because the steam vent of inclination is arranged in arc cover Surface Machining; Do not need between arc cover and grid sheet, to increase special arc extinguishing passage; Thereby can prolong the length of grid sheet, grid sheet bottom stepped arrangement along the inclined-plane of striking sheet simultaneously makes grid sheet area further increase.And adopt grid sheet with asymmetric groove, and the wrong grid sheet of installing of a positive reciprocal cross, can effectively elongate electric arc, strengthen the arc extinguishing ability of arc control device, the short circuit breaking capacity of circuit breaker is improved.In practice, adopt the arc control device of this structure after, the short circuit breaking capacity of circuit breaker is brought up to 120kA by original 80kA.
Description of drawings
Fig. 1 is the cutaway view of the utility model frame circuit breaker arc control device;
Fig. 2 is the left view of the utility model frame circuit breaker arc control device;
Fig. 3 is the structural representation of arc cover;
Fig. 4 is the wrong sketch map of placing of grid sheet one a positive reciprocal cross.
Wherein, 1-arc cover, 2-grid sheet, 3-striking sheet, 4-first arc separating wall, 5-second arc separating wall, 6-steam vent, 7-longitudinal hole, 8-stopper slot, first section breach of 9-, second section breach of 10-.
Embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, the utility model is described in detail.
The utility model provides a kind of frame circuit breaker arc control device, and is as shown in Figure 1.These arc control device comprise arc cover 1, grid sheet 2, striking sheet 3, first arc separating wall 4 and second arc separating wall 5.First, second arc separating wall top is equipped with convexity in interposition, is used for and being connected of arc cover 1.Striking sheet 3 is the laminated structure of bending, and one side vertically, and another side tilts to the lower left, and forms the obtuse angle with vertical plane, in the slot of two arc separating wall low order ends of striking sheet 3 plug-in mountings.
The structure of arc cover 1 is as shown in Figure 3.The arc cover adopts insulating material to process, and the both sides of its bottom surface are fluted, is used for the convexity butt joint with the arc separating wall top.In order to increase the shock resistance of arc cover 1, adopt screw that arc cover 1 is fixed on the arc separating wall simultaneously.The thickness of arc cover 1 is 12mm.Arc cover 1 is processed with the steam vent 6 of six inclinations along transversal line, and steam vent 6 is about 125 ° with the inclination angle of the longitudinal axis, and its front end face is processed with three longitudinal holes 7.
Grid sheet 2 is a rectangle structure; The centre position of grid sheet 2 lower ends is processed with asymmetric groove; Groove is made up of two sections breach, and first section rectangle that breach 9 is arranged for lateral symmetry is provided with second section breach 10 at the top of first section breach 9; Second section breach 10 is the trapezoidal of vertical asymmetric layout, and its afterbody is semicircle.Between second section breach 10 and the first section breach 9 by the circular arc smooth transition, between first section breach 9 and grid sheet 2 bases by the circular arc smooth transition.
In the present embodiment arc control device form by the grid sheet of 15 said structures.16 pairs of slots of processing on the inwall of first, second arc separating wall, 15 grid sheets 2 are inserted in the slot successively, and adopt the stopper slot 8 of the grid sheet 2 terminal left and right sides that its position is fixed.Grid sheet 2 is the wrong installation of a positive reciprocal cross in arc control device, and the bossing of groove and sunk part are staggered each other, and is as shown in Figure 4.In order to increase the film-cooled heat of 2 pairs of electric arcs of grid sheet, grid sheet 2 tops and arc cover inwall leave the 2mm gap, leave the 2mm gap between bottom and the striking sheet 3, and become stepped arrangement along the inclined-plane of striking sheet 3.
In sum, more than being merely the preferred embodiment of the utility model, is not the protection range that is used to limit the utility model.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (8)
1. frame circuit breaker arc control device comprise arc cover (1), grid sheet (2), striking sheet (3), first arc separating wall (4) and second arc separating wall (5); The top of two arc separating walls and arc cover (1) removably connect; Striking sheet (3) is fixed on two arc separating wall ends; It is characterized in that the both sides of said arc cover (1) bottom surface are fluted, be used for docking, realize location arc cover (1) with the convexity at arc separating wall top; The thickness range of arc cover (1) is 10mm-20mm; Arc cover (1) is processed with one with upper air-vent (6) along transversal line, and is processed with the longitudinal hole that one or more and steam vent connect in its side; Two or more grid sheets (2) are the wrong installation of a positive reciprocal cross in arc control device; And in order to prolong the length of grid sheet (2), exceed not contact with arc cover (1) inwall in grid sheet (2) top, and the bottom becomes stepped arrangement along the inclined-plane of striking sheet (3), exceeds not contact with striking sheet (3) inwall, and the length of grid sheet is the 2/3-5/6 of arc control device height.
2. a kind of frame circuit breaker arc control device as claimed in claim 1 is characterized in that two or more grid sheets (2) vertically are riveted on the inwall of first, second arc separating wall successively.
3. a kind of frame circuit breaker arc control device as claimed in claim 1 is characterized in that, are processed with two pairs or more longitudinal socket at the inwall of first, second arc separating wall, and two or more grid sheets (2) are inserted in the slot successively.
4. a kind of frame circuit breaker arc control device as claimed in claim 3 is characterized in that, the end of (2) two sides of grid sheet is respectively arranged with recessed limited step (8), limited step (8) be stuck in slot in.
5. like claim 1,2 or 3 described a kind of frame circuit breaker arc control device, it is characterized in that grid sheet (2) is a rectangle structure, the centre position of grid sheet (2) lower end is processed with asymmetric groove.
6. a kind of frame circuit breaker arc control device as claimed in claim 5; It is characterized in that; Said groove is made up of two sections breach, and the rectangle that first section breach (9) arranged for lateral symmetry is provided with second section breach (10) at the top of first section breach (9); Second section breach (10) is the trapezoidal of vertical asymmetric layout, and its afterbody is semicircle; Between second section breach (10) and the first section breach (9) by the circular arc smooth transition, between first section breach (9) and grid sheet (2) base by the circular arc smooth transition.
7. a kind of frame circuit breaker arc control device as claimed in claim 6; It is characterized in that; The top of said grid sheet (2) upper groove is at sustained height; The length of groove is and the 1/4-1/2 of striking sheet (3) adjacent gate sheet (2) length that wherein the length of first section breach (9) is the 1/2-7/10 of groove total length.
8. like claim 1,2 or 3 described a kind of frame circuit breaker arc control device, it is characterized in that, said steam vent (6) be shaped as skewed slot, V-shape groove or X type groove; The tilt angle ranges of skewed slot is 100 °-170 °, and a side of V-shape groove or X type groove is vertical, opposite side and vertical axis tilt, and tilt angle ranges is 100 °-170 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204172742U CN202259109U (en) | 2011-10-28 | 2011-10-28 | Arc extinguish chamber of frame-type circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204172742U CN202259109U (en) | 2011-10-28 | 2011-10-28 | Arc extinguish chamber of frame-type circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202259109U true CN202259109U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204172742U Expired - Fee Related CN202259109U (en) | 2011-10-28 | 2011-10-28 | Arc extinguish chamber of frame-type circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202259109U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509676A (en) * | 2011-10-28 | 2012-06-20 | 常熟市瑞特电器有限责任公司 | Framework circuit breaker arc extinguishing chamber |
| CN112447460A (en) * | 2019-08-29 | 2021-03-05 | 北京京人电器有限公司 | Arc extinguish chamber of circuit breaker |
-
2011
- 2011-10-28 CN CN2011204172742U patent/CN202259109U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509676A (en) * | 2011-10-28 | 2012-06-20 | 常熟市瑞特电器有限责任公司 | Framework circuit breaker arc extinguishing chamber |
| CN112447460A (en) * | 2019-08-29 | 2021-03-05 | 北京京人电器有限公司 | Arc extinguish chamber of circuit breaker |
| CN112447460B (en) * | 2019-08-29 | 2023-01-10 | 北京京人电器有限公司 | Arc extinguish chamber of circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGSHU RUITE ELECTRIC CO., LTD. Free format text: FORMER NAME: CHANGSHU RUITE ELECTRICAL APPARATUS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 215500 No. 40, Suzhou Road, hi tech Industrial Park, Suzhou, Jiangsu, Changshu Patentee after: Changshu Ruite Electric Co., Ltd. Address before: 215500 No. 40, Suzhou Road, hi tech Industrial Park, Suzhou, Jiangsu, Changshu Patentee before: Changshu Ruite Electrical Apparatus Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20151028 |
|
| EXPY | Termination of patent right or utility model |