40.5 Kv large-current environment-friendly gas-insulated sub-box type high-voltage switch cabinet body

Abstract

The utility model relates to a 40.5 Kv large-current environment-friendly gas-insulated split-box type high-voltage switch cabinet body, which comprises a base, a lower gas box and an upper gas box arranged on the base, a middle radiator arranged between the lower gas box and the upper gas box, a large pressure relief chamber arranged at the front ends of the lower gas box and the upper gas box, a mechanism box arranged at the rear ends of the lower gas box and the upper gas box, and a small pressure relief chamber arranged at the front end of the upper gas box. An instrument box is arranged at the top end of the upper gas box, a lower radiator is arranged on the outer wall of the lower gas box, an upper radiator is arranged on the outer wall of the upper gas box, liquid cooling pipes communicated with each other are arranged in the lower radiator and the upper radiator, a liquid cooling circulator is arranged at the bottom of the lower gas box, and a liquid inlet pipe and a liquid outlet pipe communicated with the liquid cooling circulator are arranged at the bottom of the lower gas box. The liquid cooling radiators are installed on the outer walls of the upper gas tank and the lower gas tank, the liquid cooling radiators are provided with the liquid cooling pipes, the liquid cooling pipes can contain liquid cooling liquid such as water cooling liquid, oil cooling liquid and electronic fluorinated liquid, heat on the radiators is taken away in time through circulation of the liquid cooling liquid, the heat dissipation efficiency is improved, and the problem that a traditional cabinet is low in radiator installation efficiency is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to a 40.5KV large current environmentally friendly gas-insulated split-box high-voltage switch cabinet body. Background Art

[0002] In recent years, with the development of social economy, the demand for high-current medium-voltage cabinets has continued to increase. Traditional high-current medium-voltage cabinets have low heat dissipation and rely on fans to improve heat dissipation capacity, which is neither stable nor reliable and wastes electric energy. The ultra-high temperature rise shortens the service life of the equipment and increases equipment risks, especially in extreme weather conditions, which has a huge impact on the cabinet. Utility Model Content

[0003] In order to solve the technical problems mentioned in the background technology, the utility model provides a 40.5KV large current environmentally friendly gas-insulated split-box high-voltage switch cabinet body.

[0004] The utility model adopts the following technical solution: a 40.5Kv high-current environmentally friendly gas-insulated split-box high-voltage switch cabinet body, including a base;

[0005] A lower air box and an upper air box are arranged on the base;

[0006] An intermediate radiator is arranged between the lower air box and the upper air box;

[0007] The front ends of the lower air box and the upper air box are provided with a large pressure relief chamber, and the rear ends are provided with a mechanism box;

[0008] A small pressure relief chamber is arranged at the front end of the upper air box;

[0009] An instrument box is arranged on the top of the upper air box;

[0010] A lower radiator is arranged on the outer wall of the lower air box;

[0011] An upper radiator is arranged on the outer wall of the upper air box;

[0012] The lower radiator and the upper radiator are provided with interconnected liquid cooling pipes;

[0013] A liquid cooling circulator is arranged at the bottom of the lower air box;

[0014] A liquid inlet pipe and a liquid outlet pipe connected to the liquid cooling circulator are arranged at the bottom of the lower air box; the gas in the liquid outlet pipe re-enters the lower radiator through the liquid inlet pipe after being cooled in the liquid cooling circulator, thereby forming a circulating liquid cooling system;

[0015] An upper back plate radiator is arranged on the back plate of the upper air box;

[0016] A lower back plate radiator is arranged on the back plate of the lower air box.

[0017] Furthermore, the upper rear back plate radiator and the lower rear back plate radiator are provided with explosion relief holes and are installed with explosion-proof flanges.

[0018] Furthermore, the upper air box top plate is provided with three layers of reinforcing ribs, including outer reinforcing ribs, middle reinforcing ribs, and inner reinforcing ribs; a single radiator is provided between each layer of reinforcing ribs.

[0019] Furthermore, a small pressure relief chamber pressure relief hole is provided at the top of the small pressure relief chamber;

[0020] A large pressure relief chamber pressure relief hole is arranged on the top of the large pressure relief chamber;

[0021] The upper air box is provided with an upper air box pressure relief hole;

[0022] The lower air box is provided with a lower air box pressure relief hole;

[0023] The upper air box pressure relief hole is connected to the large pressure relief chamber;

[0024] When the upper air box has an internal arc, the pressure relief hole of the upper air box will pass through the pressure relief hole of the small pressure relief chamber upward and downward, and release the pressure into the large pressure relief chamber to achieve buffering;

[0025] When the lower air box pressure relief hole releases pressure, the pressure is released upward simultaneously through the large pressure relief chamber pressure relief hole and the small pressure relief chamber pressure relief hole.

[0026] Compared with the prior art, the advantages of the utility model are:

[0027] The utility model designs a 40.5KV large current environment-friendly gas-insulated split-box high-voltage switchgear cabinet. Liquid-cooled radiators are installed on the outer walls of the upper and lower gas boxes. The liquid-cooled radiators are installed with liquid-cooling pipes. The liquid-cooling pipes can be filled with liquid cooling liquids such as water-cooling liquid, oil-cooling liquid, and electronic fluorinated liquid. The heat on the radiator is taken away in time through the circulation of the liquid cooling liquid, thereby increasing the heat dissipation efficiency and solving the problem of low efficiency of radiators installed in traditional cabinets. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the right side view of the cabinet of the 40.5Kv high current environmentally friendly gas-insulated split-box high voltage switchgear of the utility model;

[0029] Figure 2 This is the left view inside the cabinet of the utility model 40.5Kv high current environmentally friendly gas-insulated split-box high voltage switch cabinet;

[0030] Figure 3 This is a schematic diagram of the connection relationship between the upper radiator, the lower radiator and the liquid cooling pipe of the utility model;

[0031] Figure 4It is a top view of the cabinet of the 40.5Kv high-current environmentally friendly gas-insulated split-box high-voltage switchgear of the utility model;

[0032] Figure 5 This is the rear view of the interior of the 40.5Kv high-current environmentally friendly gas-insulated split-box high-voltage switchgear cabinet of the utility model;

[0033] Figure 6 This is the main view of the cabinet body of the 40.5KV large current environmentally friendly gas-insulated split-box high-voltage switchgear cabinet of the utility model.

[0034] in:

[0035] 101- instrument box, 102- mechanism box, 103- middle radiator, 104- base, 105- upper air box, 106- small pressure relief chamber, 107- lower air box, 108- large pressure relief chamber,

[0036] 201-upper radiator, 202-liquid cooling pipe, 203-lower radiator, 204-liquid cooling circulator, 205-liquid inlet pipe, 206-liquid outlet pipe,

[0037] 301-upper back plate radiator, 302-lower back plate radiator, 303-explosion-proof flange,

[0038] 401-external reinforcement, 402-middle reinforcement, 403-internal reinforcement, 404-single radiator, 405-top plate

[0039] 501-upper air box pressure relief hole, 502-lower air box pressure relief hole, 503-large pressure relief chamber pressure relief hole, 504-small pressure relief chamber pressure relief hole. DETAILED DESCRIPTION

[0040] In order to facilitate those skilled in the art to understand the technical solution of the utility model, further description is now made with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model.

[0041] In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, it is apparent that one or more embodiments may be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0042] Through the analysis, simulation and experimental research of heat and heat dissipation in the inflatable cabinet, it is found that when the conventional structure air box is used, the internal air temperature rises by about 60K. The heat in the air box cannot be dissipated to the outside of the air box, which is the main factor for the overall temperature rise exceeding the standard. Figure 1-2As shown, the utility model 40.5Kv large current environmentally friendly gas-insulated split-box high-voltage switch cabinet body includes a base 104, a lower air box 107 and an upper air box 105 are arranged on the base 104, an intermediate radiator 103 is arranged between the lower air box 107 and the upper air box 105, a large pressure relief chamber 108 is arranged at the front end of the lower air box 107 and the upper air box 105, a mechanism box 102 is arranged at the rear end, a small pressure relief chamber 106 is arranged at the front end of the upper air box 105, an instrument box 101 is arranged at the top of the upper air box 105, a lower radiator 203 is arranged on the outer wall of the lower air box 107, and an upper radiator 203 is arranged on the outer wall of the upper air box 105 The upper radiator 201 is provided with an interconnected liquid cooling pipe 202 in the lower radiator 203 and the upper radiator 201, a liquid cooling circulator 204 is provided at the bottom of the lower air box 107, and a liquid inlet pipe 205 and a liquid outlet pipe 206 connected to the liquid cooling circulator 206 are provided at the bottom of the lower air box 107; the gas in the liquid outlet pipe 206 is cooled in the liquid cooling circulator 204 and then re-enters the lower radiator 203 through the liquid inlet pipe 205, thereby forming a circulating liquid cooling system, an upper back plate radiator 301 is provided on the back plate of the upper air box 105, and a lower back plate radiator 302 is provided on the back plate of the lower air box 107. Therefore, a liquid-cooled radiator is installed outside the upper and lower air boxes, and a liquid cooling tube 202 is installed on the back of the radiator. The liquid cooling tube 202 can be filled with liquid cooling liquids such as water cooling liquid, oil cooling liquid, and electronic fluorinated liquid. The heat on the radiator is taken away in time through the circulation of liquid cooling liquid, which increases the heat dissipation efficiency, thereby effectively solving the problem of low efficiency of installing radiators in traditional cabinets.

[0043] like Figure 3 This is a schematic diagram of the connection relationship between the upper radiator, the lower radiator and the liquid cooling tube of the utility model. The liquid cooling tube 202 is installed in the upper radiator 201 and the lower radiator 203. The liquid cooling tube 202 contains liquid cooling liquid. The liquid cooling tube 202 is die-cast in the upper radiator 201, and the same is true in the lower radiator 203. The upper radiator 201 is interconnected with the lower radiator 203 and the liquid cooling tube 202, and they are all installed on the side walls of the upper air box 105 and the side walls of the lower air box 107. The heat of the gas in the air box is dissipated by air convection through the upper radiator 201 and the lower radiator 203 on the side walls of the air box. After being cooled in the liquid cooling circulator 204 through the liquid outlet pipe 206, it re-enters the radiator through the liquid inlet pipe 205, thereby forming a circulating liquid cooling system, which improves the heat dissipation efficiency. Especially in the case of a rapid increase in the cabinet temperature, it plays a vital role in quickly suppressing the signs of temperature rise and ensuring the normal operation of the equipment.

[0044] like Figure 1 As shown above, in this embodiment, a liquid-cooled intermediate radiator 103 is installed between the upper air box 105 and the lower air box 107, which further enhances the heat dissipation efficiency of the lower air box 107, prevents the gas heat of the lower air box 107 from being transferred to the upper air box 105, thereby causing the temperature of the upper air box 105 to rise sharply, and optimizes the heat dissipation mechanism.

[0045] like Figure 5 As shown, in this embodiment, the upper back plate radiator 301 and the lower back plate radiator 302 are provided with explosion relief holes and are installed with explosion-proof flanges 303. When the temperature of the upper air box 105 and the lower air box 107 rises, the high-temperature gas directly contacts the upper back plate radiator 301 and the lower back plate radiator 302, and the heat is directly transferred to the radiator, which has a higher heat dissipation efficiency. The upper back plate radiator 301 and the lower back plate radiator 302 are provided with explosion relief holes and are installed with explosion-proof flanges 303, so that the cabinet can be depressurized from the rear in time when arcing occurs inside.

[0046] In addition, please combine Figure 4 and Figure 5 As shown, in this embodiment, the top plate 405 of the upper air box 105 is provided with three layers of reinforcing ribs, including outer reinforcing ribs 401, middle reinforcing ribs 402, and inner reinforcing ribs 403. A single radiator 404 is arranged between each layer of reinforcing ribs. In this embodiment, the top plate of the upper air box is reinforced with three layers of reinforcing ribs, and a single radiator 404 is installed between the reinforcing ribs to increase the heat dissipation of the top air box. When the cabinet is in operation, the temperature rise in the air box continues to rise, and the gas gathers on the top plate of the air box. This kind of reinforcement structure ensures that the heat on the top of the box is timely transferred to the air through the single radiator 404, effectively blocking the sudden rise of the cabinet temperature.

[0047] In addition, if Figure 6 As shown, in this embodiment, a small pressure relief chamber pressure relief hole 504 is set at the top of the small pressure relief chamber 106, a large pressure relief chamber pressure relief hole 503 is set at the top of the large pressure relief chamber 108, an upper air box pressure relief hole 501 is set at the upper air box 105, and a lower air box pressure relief hole 502 is set at the lower air box 106. The upper air box pressure relief hole 504 is connected with the large pressure relief chamber 108. When the upper air box 105 has internal arcing, the upper air box pressure relief hole 501 will pass through the small pressure relief chamber pressure relief hole 504 of the small pressure relief chamber 106 upward and downward, and release the pressure to the large pressure relief chamber 108, so as to achieve buffering and protect the safety of human life and property. When the lower air box pressure relief hole 502 releases pressure, it releases pressure upward through the large pressure relief chamber pressure relief hole 503 and the small pressure relief chamber pressure relief hole 504 respectively, which solves the problem that when the air box is internally arcing, the pressure is not released in time, which causes damage to the cabinet and the surrounding people or finances.

[0048] The above embodiments are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A 40.5Kv high current environmentally friendly gas-insulated split-box high-voltage switchgear cabinet, characterized in that: comprising a base (104); A lower air box (107) and an upper air box (105) are arranged on the base (104); An intermediate radiator (103) is arranged between the lower air box (107) and the upper air box (105); The front ends of the lower air box (107) and the upper air box (105) are provided with a large pressure relief chamber (108), and the rear ends are provided with a mechanism box (102); A small pressure relief chamber (106) is provided at the front end of the upper air box (105); An instrument box (101) is arranged at the top of the upper air box (105); A lower radiator (203) is provided on the outer wall of the lower air box (107); An upper radiator (201) is provided on the outer wall of the upper air box (105); The lower radiator (203) and the upper radiator (201) are provided with interconnected liquid cooling pipes (202); A liquid cooling circulator (204) is provided at the bottom of the lower air box (107); A liquid inlet pipe (205) and a liquid outlet pipe (206) connected to the liquid cooling circulator (204) are arranged at the bottom of the lower air box (107); the gas in the liquid outlet pipe (206) is cooled in the liquid cooling circulator (204) and then re-enters the lower radiator (203) through the liquid inlet pipe (205), thereby forming a circulating liquid cooling system; An upper back plate radiator (301) is arranged on the back plate of the upper air box (105); A lower back plate radiator (302) is arranged on the back plate of the lower air box (107).

2. The 40.5Kv high current environmentally friendly gas-insulated split-box high voltage switch cabinet according to claim 1 is characterized in that: The upper rear plate radiator (301) and the lower rear plate radiator (302) are provided with explosion relief holes and are installed with explosion-proof flanges (303).

3. The 40.5Kv high current environmentally friendly gas-insulated split-box high voltage switch cabinet according to claim 2 is characterized in that: The top plate (405) of the upper air box (105) is provided with three layers of reinforcing ribs, including outer reinforcing ribs (401), middle reinforcing ribs (402), and inner reinforcing ribs (403); a single radiator (404) is provided between each layer of reinforcing ribs.

4. The 40.5Kv high current environmentally friendly gas-insulated split-box high voltage switch cabinet according to claim 3 is characterized in that: A small pressure relief chamber pressure relief hole (504) is provided at the top of the small pressure relief chamber (106); A large pressure relief chamber pressure relief hole (503) is provided on the top of the large pressure relief chamber (108); The upper air box (105) is provided with an upper air box pressure relief hole (501); The lower air box (107) is provided with a lower air box pressure relief hole (502); The upper air box pressure relief hole (501) is in communication with the large pressure relief chamber (108); When the upper air box (105) has an internal arc, the upper air box pressure relief hole (501) will pass through the small pressure relief chamber pressure relief hole (504) of the small pressure relief chamber (106) upward and downward, and release the pressure into the large pressure relief chamber (108) to achieve buffering; When the lower air box pressure relief hole (502) releases pressure, the pressure is released upward simultaneously through the large pressure relief chamber pressure relief hole (503) and the small pressure relief chamber pressure relief hole (504).

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