Arc extinguishing chamber of isolating switch

Abstract

The utility model relates to an arc extinguishing chamber, in particular to an arc extinguishing chamber of an isolating switch. The utility model provides an arc extinguishing cover of an isolating switch with a clamping function. The arc extinguishing cover of the disconnecting switch comprises a shell, arc extinguishing grid sheets and limiting blocks, the arc extinguishing grid sheets are uniformly and fixedly connected in the shell at intervals, the limiting blocks are fixedly connected to the left side and the right side of the rear portion of the shell, the arc extinguishing cover further comprises clamping blocks and elastic pieces, the clamping blocks are arranged in the limiting blocks in a sliding mode, and the elastic pieces are arranged in the clamping blocks. And two elastic pieces are connected between the clamping block and the limiting block. The device is placed at a designated position, then the clamping blocks are loosened, and the elastic pieces drive the clamping blocks to move inwards, so that the device can be fixed at the designated position, and the purpose of preventing falling is achieved.

Description

Technical Field

[0001] The utility model relates to an arc extinguishing hood, in particular to an arc extinguishing hood of an isolating switch. Background Art

[0002] Arc extinguishing refers to extinguishing the electric arc. The arc extinguishing hood is a commonly used device that allows the arc to contact with a solid medium to reduce the arc temperature and thus accelerate the extinction of the arc. The arc extinguishing hood is usually installed on the disconnector.

[0003] The patent with the patent authorization announcement number CN209104019U discloses an arc extinguishing cover, including an outer shell and an arc extinguishing grid, an arc striking port is formed at the front end of the arc extinguishing grid, the outer shell includes a back side and side sides respectively connected to the two sides of the back side, the arc extinguishing grid is horizontally placed in the outer shell, the two sides of the arc extinguishing grid are connected to the two side sides of the outer shell, the rear end of the arc extinguishing grid contacts the back side of the outer shell, arc extinguishing gaps are formed between the arc extinguishing grids, and a number of large arc discharge ports spanning multiple arc extinguishing gaps are formed on the back side of the outer shell, the large arc discharge ports are arranged in two rows, and the two rows of large arc discharge ports are staggered. Since the above patent lacks a clamping function, it is easy to fall off after the installation of the above patent is completed, thereby affecting the arc extinguishing operation.

[0004] Therefore, it is necessary to provide an arc extinguishing cover of an isolating switch with a clamping function to solve the above problems. Utility Model Content

[0005] In order to overcome the disadvantage that the above patent lacks a clamping function and is easy to fall off after installation, thus affecting the arc extinguishing operation, the utility model provides an arc extinguishing cover of an isolating switch with a clamping function.

[0006] The technical solution is: an arc extinguishing cover of an isolating switch, including a shell, an arc extinguishing grid and a limit block. A plurality of arc extinguishing grids are fixedly connected in the shell at even intervals. Limit blocks are fixedly connected to the left and right sides of the rear of the shell. The shell also includes a clamping block and an elastic member. A clamping block is slidably arranged in the limit block, and two elastic members are connected between the clamping block and the limit block.

[0007] As an improvement of the above scheme, it also includes a support block, an insulating plate and a baffle, two support blocks are fixedly connected to the top of the shell, an insulating plate is fixedly connected between the two support blocks, a baffle is fixedly connected to the bottom of the insulating plate, and the baffle is in contact with the arc extinguishing grid.

[0008] As an improvement of the above scheme, it also includes a heat dissipation frame, a support frame, an electric fan and a heat sink. The heat dissipation frame is fixedly connected to the left and right sides of the shell, the support frame is fixedly connected inside the heat dissipation frame, the electric fan is installed on the support frame, the heat sink is fixedly connected to the left and right sides of the shell, and the heat sink is located inside the heat dissipation frame.

[0009] As an improvement of the above solution, a handle is further included, and the handle is fixedly connected to the upper part of the shell.

[0010] As an improvement of the above solution, a dustproof plate is also included, and the dustproof plate is fixedly connected to the front part of the shell.

[0011] As an improvement of the above solution, a protective plate is also included. The heat dissipation frame is fixedly connected with the protective plate, and the protective plate is used to protect the electric fan.

[0012] The utility model has the following advantages: 1. By placing the device at a designated position and then loosening the clamping block, the elastic member drives the clamping block to move inward, so that the device can be fixed at the designated position, thus achieving the purpose of preventing it from falling off.

[0013] 2. The heat sink can absorb the surrounding heat, thereby achieving the purpose of cooling the isolating switch. By turning on the electric fan, the heat sink can be cooled, thereby speeding up the heat dissipation of the isolating switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the limit block, the clamping block and the elastic member of the utility model.

[0016] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the heat dissipation frame, the support frame and the electric fan of the utility model.

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the handle, dustproof plate and protective plate of the utility model.

[0018] The reference numerals in the figure are as follows: 1-housing, 2-arc extinguishing grid, 3-limiting block, 4-block, 5-elastic member, 6-support block, 7-insulating plate, 8-baffle, 9-heat dissipation frame, 10-support frame, 11-electric fan, 12-heat sink, 13-handle, 14-dustproof plate, 15-protective plate. DETAILED DESCRIPTION

[0019] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this article are only for the position of the structure shown in the corresponding drawings. The serial numbers of the parts in this article, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning. The words such as connection and coupling in this application include direct and indirect connection (coupling) unless otherwise specified.

[0020] Embodiment 1, an arc extinguishing cover of an isolating switch, see Figure 1-Figure 4As shown, it includes a shell 1, an arc-extinguishing grid 2 and a limit block 3. A plurality of arc-extinguishing grids 2 are fixedly connected in the shell 1 at even intervals. The limit blocks 3 are fixedly connected on both left and right sides of the rear of the shell 1 by welding. It also includes a clamping block 4 and an elastic member 5. The clamping block 4 is slidably arranged in the limit block 3, and two elastic members 5 are connected between the clamping block 4 and the limit block 3.

[0021] See also Figure 4 As shown, a handle 13 is also included, and the handle 13 is fixedly connected to the upper part of the shell 1 by welding.

[0022] See also Figure 4 As shown, a dustproof plate 14 is also included, and the dustproof plate 14 is fixedly connected to the front part of the shell 1 by welding.

[0023] When the device is to be used, the staff holds the handle 13 and then pulls the block 4 outward, and the elastic member 5 is compressed. Then the staff places the device at the specified position and then releases the block 4. The elastic member 5 drives the block 4 to move inward, so that the device can be fixed at the specified position, thereby achieving the purpose of preventing it from falling off. When an arc is generated between the contacts of the isolating switch, the arc can be pulled into the arc extinguishing grid 2 under the action of the contraction force of the magnetic lines of force, and then be divided into multiple short arcs. When the AC current passes through zero, all the short arcs are extinguished at the same time, thereby achieving the purpose of arc extinguishing. The dustproof plate 14 can play a dust-proof role. When the device is not needed, the staff pulls the block 4 outward again, then removes the device, and then releases the block 4.

[0024] Embodiment 2, based on embodiment 1, refer to Figure 1 and Figure 3 As shown, it also includes a support block 6, an insulating plate 7 and a baffle 8. Two support blocks 6 are fixedly connected to the top of the shell 1. The insulating plate 7 is fixedly connected between the two support blocks 6 by welding. The baffle 8 is fixedly connected to the bottom of the insulating plate 7 by bolt connection. The baffle 8 is in contact with the arc extinguishing grid 2.

[0025] See also Figure 3 As shown, it also includes a heat dissipation frame 9, a support frame 10, an electric fan 11 and a heat sink 12. The heat dissipation frame 9 is fixedly connected to the left and right sides of the shell 1, the support frame 10 is fixedly connected inside the heat dissipation frame 9, the electric fan 11 is installed on the support frame 10, and the heat dissipation fins 12 are fixedly connected to the left and right sides of the shell 1, and the heat dissipation fins 12 are located inside the heat dissipation frame 9.

[0026] See also Figure 1 As shown, a protective plate 15 is also included. The heat dissipation frame 9 is fixedly connected with the protective plate 15 . The protective plate 15 is used to protect the electric fan 11 .

[0027] When the device is in use, the heat sink 12 can absorb the surrounding heat, thereby achieving the purpose of dissipating heat for the isolating switch. The staff turns on the electric fan 11, and the electric fan 11 can dissipate heat from the heat sink 12, thereby accelerating the heat dissipation of the isolating switch. Under the action of the protective plate 15, the staff can be prevented from accidentally touching the electric fan 11 and causing unnecessary trouble. The insulating plate 7 can play an insulating role to prevent the current from causing damage to the staff. When the device does not need to be cooled, the staff can turn off the electric fan 11.

[0028] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. An arc extinguishing cover of an isolating switch, characterized in that: The invention comprises a housing (1), an arc extinguishing grid (2) and a limit block (3); a plurality of arc extinguishing grids (2) are fixedly connected in the housing (1) at even intervals; the limit blocks (3) are fixedly connected to both left and right sides of the rear of the housing (1); a clamping block (4) and an elastic member (5) are also included; the clamping block (4) is slidably arranged in the limit block (3); and two elastic members (5) are connected between the clamping block (4) and the limit block (3).

2. The arc extinguishing cover of the isolating switch according to claim 1, characterized in that: It also comprises a support block (6), an insulating plate (7) and a baffle (8); the top of the shell (1) is fixedly connected to two support blocks (6); an insulating plate (7) is fixedly connected between the two support blocks (6); the bottom of the insulating plate (7) is fixedly connected to a baffle (8); and the baffle (8) is in contact with the arc extinguishing grid (2).

3. The arc extinguishing cover of the isolating switch according to claim 2, characterized in that: It also comprises a heat dissipation frame (9), a support frame (10), an electric fan (11) and a heat sink (12); the heat dissipation frame (9) is fixedly connected to both left and right sides of the housing (1); the support frame (10) is fixedly connected inside the heat dissipation frame (9); the electric fan (11) is mounted on the support frame (10); the heat dissipation fin (12) is fixedly connected to both left and right sides of the housing (1); and the heat dissipation fin (12) is located inside the heat dissipation frame (9).

4. The arc extinguishing cover of the isolating switch according to claim 3, characterized in that: It also includes a handle (13), and the handle (13) is fixedly connected to the upper part of the shell (1).

5. The arc extinguishing cover of the isolating switch according to claim 4, characterized in that: It also includes a dustproof plate (14), and the dustproof plate (14) is fixedly connected to the front portion of the shell (1).

6. The arc extinguishing hood of the isolating switch according to claim 5, characterized in that: It also includes a protective plate (15), which is fixedly connected to the heat dissipation frame (9), and is used to protect the electric fan (11).

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