GIS three-station operating mechanism aviation plug protection box with three-proofing function

Abstract

The utility model discloses a GIS (Gas Insulated Switchgear) three-station operating mechanism aviation plug protection box with a three-proofing function, which comprises a protection box body, one side surface of the protection box body is an open side surface, and the edge of the open side surface of the protection box body is provided with a strong magnetic sealing strip. An upper cable inlet groove and a lower cable inlet groove are formed in the side face, adjacent to the open side face, of the protection box body, the two cable inlet grooves are communicated with the open side face of the protection box body, and two cable magnetic suction sealing pieces are arranged on the positions, located on the outer sides of the two cable inlet grooves, of the protection box body. Semicircular grooves are formed in the ends, close to each other, of the two cable magnetic sealing pieces respectively. According to the utility model, the aviation plug protection box is fixed on the original operating mechanism box body by using the magnetic attraction principle; the cable inlet hole is provided with a wire inlet groove, an aviation plug does not need to be pulled out during installation, equipment power failure is not needed, the independent protection box does not affect a switching-on and switching-off position display window on an original operation mechanism box, and the safety performance is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation plug protection for a GIS three-station operating mechanism, in particular to an aviation plug protection box for a GIS three-station operating mechanism with three-protection functions. Background Art

[0002] Gas insulated metal-enclosed switchgear (GIS) has a compact structure, high reliability, and low maintenance workload. It is widely used in coal mining enterprises, urban and rural power grids and other places, and can realize the control, measurement, online monitoring and protection of power supply systems. The three-position disconnector integrates the functions of the disconnector and the grounding switch. It shares an operating mechanism, and a moving contact contacts or disconnects with two static contacts respectively to form three working positions: grounding, isolation and closing. It has high integration and reliable interlocking, and is widely used in GIS. However, the control circuit cable of the three-position disconnector operating mechanism is connected to the outside with a self-locking aviation plug. Part of this aviation plug is exposed to the air for a long time, especially the outdoor type is exposed to wind and sun for a long time, which causes the elasticity of the aviation plug sealing gasket to fail. After rain and snow, rainwater enters the plug and the operating mechanism box through the aviation plug interface, which causes a DC grounding fault at the least and a short circuit trip of the DC system at the worst, affecting the stable operation of the power supply system. Although the water ingress problem can be solved by adding a rain cover to the operating mechanism box, the rain cover will block the closing and opening position display window, causing trouble for the switching operation. Utility Model Content

[0003] The utility model aims to make up for the defects of the prior art and provide a GIS three-position operating mechanism aviation plug protection box with three-proof functions.

[0004] The utility model is realized by the following technical solutions:

[0005] A GIS three-station operating mechanism aviation plug protection box with three-proof functions comprises a protection box body, one side of the protection box body is an open side, a strong magnetic sealing strip is arranged on the edge of the open side of the protection box body, and two upper and lower cable entry grooves are opened on a side surface of the protection box body adjacent to the open side, the two cable entry grooves are connected with the open side of the protection box body, and two cable magnetic sealing sheets are arranged on the outer sides of the two cable entry grooves on the protection box body, and semicircular grooves are respectively opened on the ends of the two cable magnetic sealing sheets close to each other.

[0006] A strong magnetic sealing pad is arranged at the edge of the cable magnetic sealing sheet.

[0007] The cable entry trough is a rectangular trough with a width of 26 mm.

[0008] The cable magnetic sealing sheet has a width of 30 mm.

[0009] The utility model has the advantages that the utility model solves the problem that the elasticity of the aviation plug sealing gasket fails, and rainwater enters the plug and the operating mechanism box through the aviation plug interface after rain and snow, which causes a DC grounding fault at the least and a DC system short circuit trip at the worst. The aviation plug protection box is fixed to the original operating mechanism box by the magnetic suction principle; and the cable entry hole is provided with an entry slot. When installing, there is no need to unplug the aviation plug or power off the equipment. The independent protection box will not affect the closing and opening position display window on the original operating mechanism box, and the safety performance is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 2 This is a schematic diagram of the protective box structure of the utility model;

[0012] Figure 3 This is a schematic diagram of the structure of the cable magnetic sealing sheet of the utility model. DETAILED DESCRIPTION

[0013] like Figure 1 As shown, a GIS three-position operating mechanism aviation plug protection box with three-proof functions includes a protection box body 1, one side of the protection box body 1 is an open side, and a strong magnetic sealing strip 2 is provided on the edge of the open side of the protection box body 1, and two upper and lower cable entry grooves 3 are opened on a side surface of the protection box body 1 adjacent to the open side, and the two cable entry grooves 3 are connected to the open side of the protection box body 1, and two cable magnetic sealing sheets 4 are provided on the outer sides of the two cable entry grooves 3 on the protection box body 1, and the two cable magnetic sealing sheets 4 are respectively provided with semicircular grooves 7 at one end close to each other.

[0014] A strong magnetic sealing pad 5 is provided at the edge of the cable magnetic sealing sheet 4 .

[0015] The cable entry slot 3 is a rectangular slot with a width of 26 mm.

[0016] The cable magnetic sealing sheet 4 has a width of 30 mm.

[0017] Under the premise of ensuring that the display window of the closing and opening positions is not affected, a GIS three-position operating mechanism aviation plug protection box with three-proof functions is designed. The protection box body 1 is a rectangular box body, one side of the protection box body 1 is open, and strong magnetic sealing strips 2 are glued around it. The aviation plug protection box is fixed to the outer wall of the original operating mechanism box 6 through the strong magnetic sealing strip 2 of the open box body on one side. The installation is simple and the sealing is good. Two rectangular cable entry grooves 3 with a width of 26mm are opened on the other side of the protection box body 1, and the other end is open to facilitate the entry and exit of secondary aviation plug cables. The cable entry grooves 3 are each equipped with two magnetic sealing sheets with a width of 30mm to seal the aviation plug cable. The cable magnetic sealing sheets 4 are each opened with a semicircular groove 7 at one end close to each other, and its diameter is the diameter of the aviation plug cable. The cable magnetic sealing sheet 4 is surrounded by a strong magnetic sealing pad 5 so that it can be more securely adsorbed on the cable groove. The installation of the aviation plug protection box does not require power outage of the equipment. You only need to install the protection box 1 on the side of the original operating mechanism box 6 with the aviation plug. The aviation plug cable enters through the cable entry groove 3. The strong magnetic sealing strip 2 on one side of the protection box 1 is attached to the original operating mechanism box 6. Finally, the cable magnetic sealing sheet 4 is used to seal the aviation plug incoming cable, so that the aviation plug is always in a dry and enclosed space, thereby achieving the purpose of rainproof, dustproof and corrosion-resistant.

Claims

1. A GIS three-position operating mechanism aviation plug protection box with three-proof functions, characterized by: The utility model comprises a protective box body, one side of which is an open side, a strong magnetic sealing strip is arranged on the edge of the open side of the protective box body, two upper and lower cable entry grooves are arranged on a side surface of the protective box body adjacent to the open side, the two cable entry grooves are connected with the open side of the protective box body, two cable magnetic sealing sheets are arranged on the outer sides of the two cable entry grooves on the protective box body, and semicircular grooves are respectively arranged on the two ends of the two cable magnetic sealing sheets close to each other.

2. According to claim 1, a GIS three-position operating mechanism aviation plug protection box with three-proof functions, characterized in that: A strong magnetic sealing pad is arranged at the edge of the cable magnetic sealing sheet.

3. According to claim 1, a GIS three-position operating mechanism aviation plug protection box with three-proof functions, characterized in that: The cable entry trough is a rectangular trough with a width of 26 mm.

4. The GIS three-position operating mechanism aviation plug protection box with three-proof functions according to claim 3 is characterized by: The cable magnetic sealing sheet has a width of 30 mm.

Images