Arc extinguish chamber of circuit breaker

Abstract

The utility model provides an arc extinguish chamber of a circuit breaker, which comprises a mounting rack, the mounting rack comprises a first side plate and a second side plate, a plurality of arc extinguish sheets are arranged between the first side plate and the second side plate, a plurality of exhaust structures are arranged on the first side plate and the second side plate, each arc extinguish sheet comprises two clamping plates, a grid plate is arranged between the two clamping plates, and the grid plate is arranged between the two clamping plates. A gap is arranged between two adjacent arc extinguishing sheets, and two adjacent grid plates are arranged in a staggered manner. According to the utility model, the exhaust structures are arranged on the first side plate and the second side plate, rapid shunting can be carried out on electric arcs, the electric arcs can be fully cooled, the electric arcs are prevented from rushing to gaps at the same time to burn or break down arc extinguishing sheets, and the two adjacent grid plates are arranged in a staggered manner, so that the arc extinguishing sheets can be prevented from staying at arc entering positions for a long time; according to the arc extinguishing device, the arc can be cut, the dislocation degree can be adjusted at will, use is convenient, the arc extinguishing pieces are fixed in a clamped mode, mounting and dismounting are convenient, and the arc extinguishing pieces can be replaced conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of arc extinguishing chambers, in particular to an arc extinguishing chamber of a circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and interrupt the current under normal circuit conditions, and can carry and interrupt the current under abnormal circuit conditions within a specified time. The arc extinguishing chamber is an important part of the arc extinguishing system of the circuit breaker. The arc extinguishing chamber is generally composed of several arc extinguishing pieces and a fixing plate that fixes several arc extinguishing pieces. The existing arc extinguishing pieces all include a roughly rectangular base, the side of the base facing the contact system is the arc entry end, the side facing away from the contact system is the exit end, and the area between the arc entry end and the exit end is the arc cutting area. In actual use, the arc tends to stay at the arc entry position of the arc extinguishing piece for a long time, and it is difficult to enter the arc extinguishing piece and be cut, resulting in severe contact erosion, and even affecting the normal connection of the circuit breaker.

[0003] To this end, the utility model provides an arc extinguishing chamber of a circuit breaker. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide an arc extinguishing chamber of a circuit breaker to solve the problems raised in the above-mentioned background technology. The utility model can quickly divert the arc so that the arc can be fully cooled, preventing the arc from rushing to the gap at the same time and causing burns or breakdown of the arc extinguishing piece; and can prevent the arc extinguishing piece from staying in the arc entry position for a long time, ensuring that the arc can be cut, and the degree of misalignment can be adjusted at will, thereby facilitating use.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: an arc extinguishing chamber of a circuit breaker, including a mounting frame, the mounting frame including a first side plate and a second side plate, a plurality of arc extinguishing pieces are installed between the first side plate and the second side plate, a plurality of exhaust structures are installed on the first side plate and the second side plate, the arc extinguishing piece includes two clamping plates, a grid plate is installed between the two clamping plates, a gap is provided between two adjacent arc extinguishing pieces, and two adjacent grid plates are staggered.

[0006] Furthermore, both sides of the first side plate and both sides of the second side plate are provided with card slots, and the card slots correspond to the card plates.

[0007] Furthermore, a limiting groove is provided on the top of the card slot, and a limiting block is fixed on the top of the card plate, and the limiting block corresponds to the limiting groove.

[0008] Furthermore, a groove is provided in the clamping plate, and the groove corresponds to the grid plate.

[0009] Furthermore, a plurality of screws are threadedly engaged on one side of the clamping plate, and the screws are in contact with the grid plate.

[0010] Furthermore, the screw is made of plastic material.

[0011] Furthermore, the exhaust structure includes a plurality of first exhaust ports opened on one side of the first side plate and a plurality of second exhaust ports opened on one side of the second side plate.

[0012] Furthermore, the first exhaust port and the second exhaust port are both connected to the gap, and the first exhaust port and the second exhaust port are staggered.

[0013] Beneficial effects of the utility model: The utility model provides an arc extinguishing chamber of a circuit breaker, comprising a first side plate; a second side plate; a gap; a grid plate; and an arc extinguishing sheet.

[0014] An exhaust structure is arranged on the first side plate and the second side plate, which can quickly divert the arc so that the arc can be fully cooled and prevent the arc from rushing to the gap at the same time to cause burning or breakdown of the arc extinguishing plate. The two adjacent grid plates are staggered to prevent the arc extinguishing plate from staying in the arc entry position for a long time, ensuring that the arc can be cut, and the degree of staggered arrangement can be adjusted at will for easy use. The arc extinguishing plate is fixed by clipping, which is convenient for installation and disassembly, thereby facilitating the replacement of the arc extinguishing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall assembly three-dimensional structure of an arc extinguishing chamber of a circuit breaker of the utility model;

[0016] Figure 2 It is a schematic diagram of the assembled three-dimensional structure of the arc extinguishing piece in the arc extinguishing chamber of a circuit breaker of the utility model;

[0017] Figure 3 It is a schematic diagram of the assembled three-dimensional structure of a first side plate and a second side plate in an arc extinguishing chamber of a circuit breaker according to the utility model;

[0018] Figure 4 It is a schematic diagram of the overall assembly cross-sectional structure of an arc extinguishing chamber of a circuit breaker of the utility model;

[0019] In the figure: 1, first side plate; 2, second side plate; 3, arc extinguishing plate; 4, clamping groove; 5, limiting groove; 6, clamping plate; 7, limiting block; 8, groove; 9, grid plate; 11, screw; 12, first exhaust port; 13, second exhaust port; 14, gap. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figures 1 to 4The utility model provides a technical solution: an arc extinguishing chamber of a circuit breaker, comprising a mounting frame, the mounting frame comprising a first side plate 1 and a second side plate 2, a plurality of arc extinguishing sheets 3 are mounted between the first side plate 1 and the second side plate 2, a plurality of exhaust structures are mounted on the first side plate 1 and the second side plate 2, the arc extinguishing sheet 3 comprises two clamping plates 6, a grid plate 9 is mounted between the two clamping plates 6, a gap 14 is arranged between two adjacent arc extinguishing sheets 3, and two adjacent grid plates 9 are staggered.

[0022] In this embodiment, a card slot 4 is provided on both sides of the first side panel 1 and on both sides of the second side panel 2, the card slot 4 corresponds to the card plate 6, a limiting slot 5 is provided on the top of the card slot 4, a limiting block 7 is fixed on the top of the card plate 6, and the limiting block 7 corresponds to the limiting slot 5.

[0023] Specifically, the arc extinguishing piece 3 can be installed by inserting the clamping plate 6 into the clamping slot 4 and the limiting block 7 into the limiting slot 5. The installation is relatively convenient. By pulling the arc extinguishing piece 3 upward, the clamping plate 6 can be pulled out of the clamping slot 4, thereby facilitating the disassembly and replacement of the arc extinguishing piece 3.

[0024] A groove 8 is provided in the clamping plate 6, and the groove 8 corresponds to the grid plate 9. A plurality of screws 11 are threadedly engaged on one side of the clamping plate 6, and the screws 11 are in contact with the grid plate 9, and the screws 11 are made of plastic material.

[0025] Specifically, the position of the grid plate 9 in the groove 8 can be adjusted to adjust the misalignment between two adjacent grid plates 9 to ensure that the arc can be cut. The grid plate 9 can be clamped by rotating the screw 11 to fix the grid plate 9.

[0026] The exhaust structure includes a plurality of first exhaust ports 12 opened on one side of the first side plate 1 and a plurality of second exhaust ports 13 opened on one side of the second side plate 2. Both the first exhaust ports 12 and the second exhaust ports 13 are connected to the gap 14, and the first exhaust ports 12 and the second exhaust ports 13 are staggered.

[0027] Specifically, the first exhaust port 12 and the second exhaust port 13 are staggered, which can improve the exhaust efficiency and can stagger the arc, thereby facilitating the cooling of the arc and improving the arc extinguishing efficiency of the device.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An arc extinguishing chamber of a circuit breaker, comprising a mounting frame, characterized in that: The mounting frame comprises a first side plate (1) and a second side plate (2), a plurality of arc-extinguishing plates (3) are mounted between the first side plate (1) and the second side plate (2), a plurality of exhaust structures are mounted on the first side plate (1) and the second side plate (2), the arc-extinguishing plates (3) comprise two clamping plates (6), a grid plate (9) is mounted between the two clamping plates (6), a gap (14) is provided between two adjacent arc-extinguishing plates (3), and two adjacent grid plates (9) are staggered.

2. The arc extinguishing chamber of a circuit breaker according to claim 1, characterized in that: Both sides of the first side plate (1) and both sides of the second side plate (2) are provided with card slots (4), and the card slots (4) correspond to the card plates (6).

3. The arc extinguishing chamber of a circuit breaker according to claim 2, characterized in that: A limiting groove (5) is provided on the top of the clamping slot (4), and a limiting block (7) is fixed on the top of the clamping plate (6), wherein the limiting block (7) corresponds to the limiting groove (5).

4. The arc extinguishing chamber of a circuit breaker according to claim 1, characterized in that: A groove (8) is provided in the clamping plate (6), and the groove (8) corresponds to the grid plate (9).

5. The arc extinguishing chamber of a circuit breaker according to claim 1, characterized in that: A plurality of screws (11) are threadedly engaged on one side of the clamping plate (6), and the screws (11) are in contact with the grid plate (9).

6. The arc extinguishing chamber of a circuit breaker according to claim 5, characterized in that: The screw (11) is made of plastic material.

7. The arc extinguishing chamber of a circuit breaker according to claim 1, characterized in that: The exhaust structure comprises a plurality of first exhaust ports (12) opened on one side of the first side plate (1) and a plurality of second exhaust ports (13) opened on one side of the second side plate (2).

8. The arc extinguishing chamber of a circuit breaker according to claim 7, characterized in that: The first exhaust port (12) and the second exhaust port (13) are both connected to the gap (14), and the first exhaust port (12) and the second exhaust port (13) are offset.

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