Arc extinguishing device structure

Abstract

The utility model relates to an arc extinguishing device structure, in particular to an arc extinguishing device structure with double grid sheets, which comprises a plurality of first grid sheet structures which are assembled between two arc isolating sheets and form a main arc extinguishing area, and a plurality of second grid sheet structures are arranged on one side of each first grid sheet structure and opposite to the back of the main arc extinguishing area. And the second grid sheet structure is fixedly assembled between the two arc isolating sheets to form an auxiliary arc extinguishing area, so that the electric arc can be doubly segmented, and internal metal particles can be prevented from directly flying out, and the auxiliary arc extinguishing area formed by the second grid sheet structure is additionally arranged at the back of the main arc area. The double-segmentation arc can better prevent internal metal particles from directly flying out, the arc extinguishing effect is further improved, and the arc extinguishing device further has the advantages of being simple in structure, convenient to machine, easy to assemble and high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to an arc extinguishing device structure, especially an arc extinguishing device structure with double grids. BACKGROUND

[0002] Ordinary circuit breakers will have an arc extinguishing chamber, and the arc extinguishing chamber will be provided with a grid, which surrounds the moving radius of the moving contact. The existing arc extinguishing chamber grid is a single row of grids, such as the low-voltage circuit breaker arc extinguishing chamber disclosed in CN218975378U. When a large current is broken, metal particles are instantly sprayed out of the circuit breaker, which may damage the internal cables and components of the box, causing secondary short circuit and affecting the arc extinguishing effect. How to optimize the structure of the grid is a technical problem we need to solve at present. SUMMARY

[0003] In view of the existing technical deficiencies, the utility model provides an arc extinguishing device structure.

[0004] In order to achieve the above purpose, the utility model adopts the technical scheme of: an arc extinguishing device structure, characterized by comprising a plurality of first grid structures assembled between two arc separation pieces and forming a main arc extinguishing area, a plurality of second grid structures being provided on one side of the first grid structure and opposite to the back of the main arc extinguishing area, the second grid structure forming a secondary arc extinguishing area by being fixedly assembled between two arc separation pieces, double-dividing arc, and blocking the internal metal particles from flying out directly.

[0005] The second grid structure has a head and a tail formed in the direction from the main arc extinguishing area to the secondary arc extinguishing area, and has a gap space between adjacent first grid structures, the head of the second grid structure being staggered with the first grid structure by being arranged in the corresponding gap space.

[0006] The tail of the second grid structure is provided with a bending part bent upward.

[0007] The bending angle of the bending part is 30 degrees.

[0008] The first grid structure and the second grid structure have an inclination angle therebetween.

[0009] The inclination angle is 5 degrees.

[0010] The second grid structure is provided with a protrusion on both sides, and the arc separation piece is provided with a limiting groove matched with the protrusion, the second grid structure being limited and fixed on the arc separation piece by being clamped into the limiting groove.

[0011] The front part of the main arc extinguishing area and opposite to the first grid structure is provided with a gas production cover for gas blowing, and the gas production cover is fixedly assembled on the two arc separation pieces.

[0012] The gas production cover is provided with a mounting groove matched with the side edge of the arc separation sheet, and the arc separation sheet is inserted into the mounting groove through the side edge to be limited.

[0013] The utility model discloses beneficial effect: the utility model discloses the back of main arc region has added the vice arc extinguishing area of second grid sheet structure, double split arc can better block the direct flying of internal metal particle, further improved arc extinguishing effect, the utility model discloses still have simple structure, processing is convenient and the characteristics of easy assembly, strong practicality. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is structure schematic diagram of the utility model;

[0015] Figure 2 It is structure exploded view of the utility model;

[0016] Figure 3 It is structure schematic diagram of the utility model after hiding one arc separation sheet;

[0017] Figure 4 It is structure schematic diagram of second grid sheet structure of the utility model;

[0018] Figure 5 It is structure schematic diagram of gas production cover of the utility model. DETAILED DESCRIPTION

[0019] As Figures 1-5 Shown, an arc extinguishing device structure, including a plurality of assembly between two arc separation sheets 100 and form the first grid sheet structure 210 of main arc extinguishing area 200, the one side of first grid sheet structure 210 and relative to the back of main arc extinguishing area 200 is equipped with a plurality of second grid sheet structure 310, second grid sheet structure 310 is formed by fixed assembly between two arc separation sheets 100 and forms vice arc extinguishing area 300, the back of main arc region has added by second grid sheet structure 310 and forms vice arc extinguishing area 300, double split arc, and block internal metal particle directly fly out.

[0020] The second grid sheet structure 310 has a head 311 and a tail 312 formed from the main arc extinguishing area 200 to the vice arc extinguishing area 300, and a gap space 211 between adjacent first grid sheet structures 210. The head 311 of the second grid sheet structure 310 is staggered with the first grid sheet structure 210 by being arranged in the corresponding gap space 211, which is equivalent to the first grid sheet structure 210 being separated from the second grid sheet structure 310. This improves the arc extinguishing effect and is highly practical.

[0021] The tail 312 of the second grid sheet structure 310 is provided with a bending portion 313 bent upward. Here, "upward" is with respect to the direction of the arrow A in the drawing. Figure 3The direction reference can guide the metal particles generated in the breaking process to not be directly sprayed outside.

[0022] The bending angle of the bending part 313 is 30 degrees, and the bending angle of the present application is preferably 30 degrees, which is better.

[0023] The first grid structure 210 and the second grid structure 310 have an inclination angle, so that the first grid structure 210 and the second grid structure 310 are inclined, improving the arc extinguishing effect.

[0024] The inclination angle is 5 degrees, and the inclination angle of the present application is preferably 5 degrees, which is better according to multiple experiments.

[0025] The second grid structure 310 is provided with a protrusion 314 on both sides, and the arc separation piece 100 is provided with a limiting groove 110 matched with the protrusion 314, and the second grid structure 310 is clamped into the limiting groove 110 through the protrusion 314 to realize limiting and fixing on the arc separation piece 100, and the second grid structure 310 is fixed and assembled in a clamping manner through the cooperation of the protrusion 314 and the limiting groove 110.

[0026] The front part of the main arc extinguishing area 200 and relative to the first grid structure 210 is provided with a gas production cover 400 for gas blowing, and the gas production cover 400 is fixed and assembled on the two arc separation pieces 100, and the addition of the gas production cover 400 can produce gas when the arc heats the surface of the gas production cover 400, cool the arc and push the arc to the grid structure narrow gap and to the product gas outlet for cooling.

[0027] The gas production cover 400 is provided with a mounting groove 410 matched with the side edge part 120 of the arc separation piece 100, and the arc separation piece 100 is inserted into the mounting groove 410 through the side edge part 120 to realize limiting, and the side edge part 120 of the arc separation piece 100 is clamped into the mounting groove 410 to realize limiting.

[0028] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and simple changes and replacements of ordinary technical personnel in the art are within the protection scope of the present application without departing from the spirit and scope of the present application.

Claims

1. An arc quenching device structure, characterized by The first grid structure (210) is arranged between two arc separation pieces (100) and forms a main arc extinguishing area (200), one side of the first grid structure (210) is provided with a plurality of second grid structures (310) relative to the back of the main arc extinguishing area (200), and the second grid structures (310) form a secondary arc extinguishing area (300) by being fixedly arranged between two arc separation pieces (100).

2. An arc quenching device structure as claimed in claim 1, characterized in that The second grid structure (310) has a head portion (311) and a tail portion (312) formed in the direction from the main arc extinguishing area (200) to the secondary arc extinguishing area (300), and has a gap space (211) between adjacent first grid structures (210), and the head portion (311) of the second grid structure (310) is staggered with the first grid structure (210) by being arranged in the corresponding gap space (211).

3. An arc quenching device structure as claimed in claim 2, characterized in that The tail portion (312) of the second grid structure (310) is provided with a bending portion (313) bent upward.

4. An arc quenching device structure as claimed in claim 3, characterized in that The bending angle of the bending portion (313) is 30 degrees.

5. An arc quenching device structure as claimed in claim 1, wherein, The first grid structure (210) and the second grid structure (310) have an inclination angle.

6. An arc quenching device structure as claimed in claim 5, characterized in that The inclination angle is 5 degrees.

7. An arc quenching device structure as claimed in claim 1, wherein, Both sides of the second grid structure (310) are provided with a protrusion (314), and the arc separation piece (100) is provided with a limiting groove (110) matched with the protrusion (314), and the second grid structure (310) is limited and fixed on the arc separation piece (100) by being clamped into the limiting groove (110) through the protrusion (314).

8. An arc quenching device according to any one of claims 1 to 7, wherein The front portion of the main arc extinguishing area (200) relative to the first grid structure (210) is provided with a gas production cover (400) for gas blowing, and the gas production cover (400) is fixedly arranged on two arc separation pieces (100).

9. An arc quenching device structure as claimed in claim 8, characterized in that The gas production cover (400) is provided with a mounting groove (410) matched with the side edge portion (120) of the arc separation piece (100), and the arc separation piece (100) is limited by being inserted into the mounting groove (410) through the side edge portion (120).

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