A CGIS gas insulated switchgear

Abstract

The application relates to the technical field of CGIS (Cubical Gas Insulated Switchgear) gas insulated cabinets, and particularly discloses a CGIS gas insulated cabinet which comprises a cabinet body, a cabinet door arranged at the front side of the cabinet body, and an aeration pipe arranged at the upper middle side of the cabinet body; a connecting buffer cavity is arranged at the lower inner side of the cabinet body, a pressure relief pipe is connected to the upper middle side of the connecting buffer cavity, a mounting block is arranged at the upper inner side of the connecting buffer cavity, a pressure reduction structure is connected to the outer side of the mounting block, the pressure reduction structure comprises a sealing plate, a connecting block and a spring, a mounting plate is arranged at the lower left end of the cabinet body, a cooling box is arranged at the upper middle side of the mounting plate, a limiting structure is connected to the outer side of the upper end of the mounting plate, and the limiting structure comprises a connecting plate, a supporting block and a limiting rod. The CGIS gas insulated cabinet is provided with the limiting structure, can install the cooling box, plays a supporting and fixing role on the cooling box, is provided with the pressure reduction structure, and can play a pressure reduction role on the interior of the insulated cabinet.

Description

Technical Field

[0001] This invention relates to the field of CGIS gas-insulated cabinet technology, specifically to a CGIS gas-insulated cabinet. Background Technology

[0002] CGIS gas-insulated cabinets are devices that utilize CGIS gas for insulation. They seal and weld medium-voltage live components such as busbars, vacuum circuit breakers, disconnectors, grounding switches, and instrument transformers inside a stainless steel gas chamber filled with low-pressure insulating gas. For example:

[0003] Chinese Patent Publication No. CN114362004A discloses a gas-insulated switchgear with convenient heat dissipation, including a housing. Inside the housing, from top to bottom, there are mutually isolated busbar compartments, circuit breaker compartments, and cable compartments. A stationary contact box is located in the circuit breaker compartment. A heat dissipation pipe is installed inside the housing. One end of the heat dissipation pipe is located in the circuit breaker compartment, and the other end is located above the top surface of the housing. The heat dissipation pipe is filled with coolant. When the switchgear is in the closed operation state, the heat dissipation pipe absorbs the heat conducted from the contact points of the stationary contact box, and the coolant inside the heat dissipation pipe conducts the heat to the top radiator for heat dissipation. The coolant inside the heat dissipation pipe vaporizes at high temperature and rises along the heat dissipation pipe to the top radiator for heat dissipation. After being cooled by the radiator, the high-temperature gaseous coolant liquefies into a room-temperature liquid coolant, which flows back to the circuit breaker compartment along the inner wall of the heat dissipation pipe, thereby achieving circulating heat dissipation.

[0004] Chinese Patent Publication No. CN119093207B discloses an indoor gas-insulated cabinet, including a cabinet body and a heat dissipation device. The heat dissipation device includes a water tank and a power component. The water tank is connected to the outer wall of the cabinet body. The power component includes a first check valve, a second check valve, a thermal expansion and contraction plate, and a circulation pipe. A power chamber is formed inside the cabinet body. The thermal expansion and contraction plate is connected to the inner wall of the power chamber. A water inlet channel is formed on the inner wall of the power chamber. The first check valve is connected to the inner wall of the water inlet channel. A cooling channel is formed on the inner wall of the power chamber. The second check valve is connected to the inner wall of the cooling channel. The circulation pipe is connected to the outer wall of the cabinet body. The arrangement of the first check valve, the second check valve, the thermal expansion and contraction plate, and the circulation pipe in this application ensures that the heat generated by the electrical components during operation can be stably transferred to the inner wall of the cabinet body, thereby cooling the electrical components and preventing them from being damaged by prolonged operation at high temperatures, thus extending the service life of the indoor gas-insulated cabinet.

[0005] The existing technical solutions have the following drawbacks: During use, the temperature of the gas inside the CGIS gas insulation cabinet will rise. Since the gas pressure will also rise at the same time as the temperature rises, it will cause the CGIS gas insulation cabinet to malfunction. Therefore, we propose a CGIS gas insulation cabinet to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a CGIS gas insulation cabinet to solve the problem mentioned in the background art that the gas temperature inside the insulation cabinet will rise during use, and the gas pressure will also rise at the same time as the temperature rises, which will cause the CGIS gas insulation cabinet to malfunction.

[0007] To achieve the above objectives, the present invention provides the following technical solution: As a preferred technical solution of the present invention, a CGIS gas-insulated cabinet includes a cabinet body, a cabinet door is provided on the front side, and an inflation pipe is installed on the upper middle side of the cabinet body;

[0008] Also includes:

[0009] A connecting buffer chamber is installed inside the lower side of the cabinet, and a pressure relief pipe is connected to the upper middle side of the connecting buffer chamber. An installation block is installed inside the upper side of the connecting buffer chamber, and a pressure reducing structure is connected to the outside of the installation block. The pressure reducing structure includes a sealing plate, a connecting block and a spring. The sealing plate is installed outside the installation block. The left side of the sealing plate is connected to the connecting block, and a spring is installed inside the connecting block.

[0010] The mounting plate is installed on the lower left side of the cabinet, and a cooling box is provided on the upper middle side of the mounting plate. A limiting structure is connected to the upper outer side of the mounting plate, and the limiting structure includes a connecting plate, a support block and a limiting rod. The connecting plate is installed on the upper outer side of the mounting plate, and a support block is connected to the outer side of the connecting plate. A limiting rod is connected to the lower inner side of the connecting plate.

[0011] Preferably, a temperature detector is fixedly installed on the upper inside of the cabinet, and a pressure detector is installed on the left inside of the cabinet. An alarm is installed on the upper front of the cabinet, and a large-section copper busbar is installed on the right side of the cabinet.

[0012] Preferably, a controller is also fixedly installed on the front middle side of the cabinet door.

[0013] Preferably, a mounting connecting plate is fixedly installed on the right side of the cooling box, and a coolant inlet pipe is installed on the upper rear side of the mounting connecting plate. A connecting water pump is fixedly installed on the lower front side of the cooling box, and a cooling pipe is installed on the front side of the connecting water pump.

[0014] Preferably, a connecting fixing plate is fixedly installed on the lower left side of the cooling box, and a movable fixing rod is movably connected to the middle of the lower end of the connecting fixing plate. A connecting fixing block is fixedly installed on the outer side of the middle part of the cooling box, and a limit connecting rod is movably connected to the middle of the connecting fixing block.

[0015] Preferably, the cooling pipes are evenly distributed inside the mounting connection plate, and the cooling pipes are fitted to the cabinet.

[0016] Preferably, the connecting plate and the mounting plate are fitted together, and the connecting plate and the limiting rod are threaded together.

[0017] Preferably, a heat dissipation fin is also fixedly installed on the lower inner side of the connecting buffer cavity.

[0018] Preferably, the sealing plate and the mounting block are rotatably connected, and the sealing plate and the pressure relief pipe are fitted together.

[0019] Preferably, the movable fixing rod and the mounting plate are connected by a thread, and a support plate is also provided on the inner side of the mounting plate.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects: the CGIS gas insulation cabinet is provided with a limiting structure, which can install the cooling box and thus support and fix the cooling box, and is provided with a pressure reduction structure, which can reduce the pressure inside the insulation cabinet.

[0021] 1. By placing the cooling box on the upper side of the mounting plate and pushing it to the right, the cooling box causes the connecting plate to slide to the right, which in turn causes the mounting plate to slide to the right. This allows the mounting plate to hold the cooling pipe in place on the left side of the cabinet, and the connecting plate to engage with the middle left end of the mounting plate. Rotating the moving fixing rod causes it to thread into the middle lower end of the connecting fixing plate, thus securing the moving fixing rod to the lower left end of the mounting plate. This facilitates the installation of the cooling box. Finally, the connecting plate is placed on the outside of the cooling box, allowing the connecting plate to... Installed on the upper outer side of the mounting plate, the connecting plate is installed on the lower side of the connecting fixing block. Rotating the limiting connecting rod causes it to be threaded in the middle of the connecting fixing block, thus making the limiting connecting rod threaded on the upper middle side of the connecting plate. Rotating the limiting rod causes it to be threaded on the lower inner side of the connecting plate, thus making the limiting rod threaded on the upper outer side of the mounting plate. This facilitates the fixing of the connecting plate, allowing the connecting plate to clamp and fix the cooling box, while also supporting the cooling box. The support plate set on the lower inner side of the mounting plate further facilitates the support of the mounting plate.

[0022] 2. Gas from inside the cabinet enters the pressure relief pipe, causing the gas to push the sealing plate to rotate downwards on the outside of the mounting block. This causes the sealing plate to rotate downwards, which in turn causes the connecting block to extend the spring. This allows the gas from inside the cabinet to enter the connecting buffer chamber through the pressure relief pipe. The heat dissipation fins installed on the lower side of the connecting buffer chamber cool the gas inside, thus reducing the gas pressure.

[0023] 3. The temperature of the air inside the cabinet is conducted to the outer shell of the cabinet, and then the temperature is conducted through the outer shell to the large cross-section copper busbar. The large cross-section copper busbar then dissipates the temperature into the air. Then, the connecting water pump is started, which draws the coolant from inside the cooling box into the mounting plate. Under the uniform distribution of the coolant inside the mounting plate and the cooling pipes, the coolant inside the mounting plate exchanges heat with the outer shell of the cabinet, thereby reducing the temperature inside the cabinet and facilitating the cooling of the air inside the cabinet. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure connecting the cabinet and the alarm device of the present invention;

[0026] Figure 2 This is a schematic cross-sectional view of the connection between the cabinet body and the air inflator of the present invention.

[0027] Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0028] Figure 4 For the present invention Figure 2 Enlarged view of the structure at point B in the middle;

[0029] Figure 5 This is a schematic cross-sectional view of the connection between the cabinet body and the cabinet door of the present invention.

[0030] Figure 6 This is a schematic cross-sectional view of the connection between the mounting plate and the support plate of the present invention.

[0031] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point C;

[0032] Figure 8 For the present invention Figure 6 Enlarged view of the structure at point D;

[0033] Figure 9 This is a schematic diagram of the overall structure of the present invention, showing the connection between the cooling pipe and the water pump.

[0034] Figure 10 This is a schematic diagram of the overall structure connecting the buffer cavity and the heat dissipation fins of the present invention;

[0035] Figure 11 This is a schematic diagram of the overall structure of the connection between the mounting block and the sealing plate of the present invention.

[0036] In the diagram: 1. Cabinet; 2. Cabinet door; 3. Controller; 4. Inflation pipe; 5. Alarm; 6. Mounting plate; 7. Support plate; 8. Cooling box; 9. Mounting connection plate; 10. Cooling pipe installation; 11. Coolant inlet pipe; 12. Connecting fixing plate; 13. Connecting plate; 14. Support block; 15. Air pressure detector; 16. Temperature detector; 17. Large cross-section copper busbar; 18. Connecting buffer chamber; 19. Heat dissipation fins; 20. Pressure relief pipe; 21. Mounting block; 22. Sealing plate; 23. Connecting block; 24. Spring; 25. Moving fixing rod; 26. Limiting rod; 27. Connecting fixing block; 28. Limiting connecting rod; 29. ​​Connecting water pump. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] Please see Figures 1-11 The present invention provides the following technical solution:

[0039] A CGIS gas-insulated cabinet includes: a cabinet body 1, a cabinet door 2, a controller 3, an inflation pipe 4, an alarm 5, a mounting plate 6, a support plate 7, a cooling box 8, a mounting connection plate 9, a mounting cooling pipe 10, a coolant inlet pipe 11, a connecting fixing plate 12, a connecting plate 13, a support block 14, a gas pressure detector 15, a temperature detector 16, a large cross-section copper busbar 17, a connecting buffer chamber 18, a heat dissipation fin 19, a pressure relief pipe 20, a mounting block 21, a sealing plate 22, a connecting block 23, a spring 24, a movable fixing rod 25, a limiting rod 26, a connecting fixing block 27, a limiting connecting rod 28, and a connecting water pump 29.

[0040] When using it for work, specifically such as Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, a mounting plate 6 is fixedly installed on the lower left side of the cabinet 1. A support plate 7 is set on the left side of the mounting plate 6. A cooling box 8 is set on the upper side of the support plate 7. A mounting connecting plate 9 is fixedly installed on the right side of the cooling box 8. A connecting water pump 29 is fixedly set on the lower front side of the cooling box 8. A mounting cooling pipe 10 is installed on the front side of the connecting water pump 29. A connecting fixing plate 12 is fixedly installed on the lower left side of the cooling box 8. A movable fixing rod 25 is movably installed on the middle side of the lower end of the connecting fixing plate 12. When the cooling box 8 is manually placed on the upper side of the mounting plate 6 and pushed to the right, the cooling box 8 causes the connecting fixing plate 12 to slide to the right under the pushing force, thereby causing the cooling box 8 to move. The mounting connecting plate 9 is slid to the right, thereby causing the mounting connecting plate 9 to drive the mounting cooling pipe 10 to fit against the left side of the cabinet 1, so that the connecting fixing plate 12 is engaged with the middle side of the left end of the mounting plate 6. Then, the moving fixing rod 25 is manually turned, so that the moving fixing rod 25 is threadedly connected to the middle side of the lower end of the connecting fixing plate 12 under the action of the thread between the moving fixing rod 25 and the connecting fixing plate 12, thereby causing the moving fixing rod 25 to move upward, and then the moving fixing rod 25 is threadedly connected to the lower side of the left end of the mounting plate 6 under the action of the upward movement, which facilitates the installation of the cooling box 8.

[0041] Then, a connecting block 27 is fixedly installed on the outer side of the middle part of the cooling box 8. A limiting connecting rod 28 is movably connected in the middle of the connecting block 27. A connecting plate 13 is installed on the outer side of the lower end of the limiting connecting rod 28. A support block 14 is set on the outer side of the connecting plate 13. A limiting rod 26 is movably installed on the inner side of the lower end of the connecting plate 13. The connecting plate 13 is manually placed on the outer side of the cooling box 8, so that the connecting plate 13 is installed on the outer side of the upper end of the mounting plate 6, thereby making the connecting plate 13 installed on the lower side of the connecting block 27. The limiting connecting rod 28 is manually turned, so that the limiting connecting rod 28 is threaded in the middle of the connecting block 27 under the turning action, thereby connecting the limiting connecting rod 28 and the... The threaded action between the connecting fixing blocks 27 causes the limiting connecting rod 28 to move downwards. As the limiting connecting rod 28 moves downwards, it is threaded on the upper middle side of the connecting plate 13. Then, the limiting rod 26 is manually turned, causing it to be threaded on the lower inner side of the connecting plate 13. This makes the limiting rod 26 threaded on the upper outer side of the mounting plate 6, which facilitates the fixing of the connecting plate 13. This allows the connecting plate 13 to clamp and fix the cooling box 8, and also supports the cooling box 8. The support plate 7 provided on the lower inner side of the mounting plate 6 further facilitates the support of the mounting plate 6.

[0042] Specific examples Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 10 and Figure 11 The system passes through a cabinet door 2 on the front side of cabinet 1, a controller 3 on the middle front side of cabinet door 2, an inflation pipe 4 fixedly installed on the upper right side of cabinet 1, an alarm 5 fixedly installed on the upper front side of cabinet 1, a temperature detector 16 fixedly installed on the upper inside of cabinet 1, a pressure detector 15 fixedly installed on the left inside of cabinet 1, a connecting buffer chamber 18 fixedly installed on the lower inside of cabinet 1, a pressure relief pipe 20 installed on the upper end of connecting buffer chamber 18, a heat dissipation fin 19 installed on the lower inside of connecting buffer chamber 18, a mounting block 21 installed on the upper inside of connecting buffer chamber 18, a sealing plate 22 connected to the outside of mounting block 21, a connecting block 23 fixedly installed on the left side of sealing plate 22, and a spring 24 fixedly installed in the middle of connecting block 23. When the air pressure detector 15 located on the left side of the cabinet detects that the air pressure inside the cabinet 1 is high, the gas inside the cabinet 1 enters the interior of the pressure relief pipe 20. This causes the gas to push the sealing plate 22 to rotate downward on the outside of the mounting block 21. Under the rotational action between the sealing plate 22 and the mounting block 21, the sealing plate 22 drives the connecting block 23 to rotate downward. In turn, the downward rotation of the connecting block 23 causes the connecting block 23 to drive the spring 24 to extend, allowing the gas inside the cabinet 1 to enter the interior of the connecting buffer chamber 18 through the pressure relief pipe 20. This allows the heat dissipation fins 19 located on the lower side of the connecting buffer chamber 18 to cool the gas inside the connecting buffer chamber 18, thereby reducing the gas pressure.

[0043] Specific examples Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 9 As shown, a large-section copper busbar 17 is fixedly installed on the middle right side of cabinet 1. When the air pressure detector 15 located on the left side inside cabinet 1 detects a rapid drop in the air pressure inside cabinet 1, the detection result is transmitted to the controller 3. This causes the controller 3 to activate the alarm 5, prompting personnel to fill the cabinet 1 with gas through the inflation pipe 4. The inflation pipe 4 is equipped with a valve. The temperature of the internal components of cabinet 1 is conducted to the outer shell of cabinet 1, and then through the outer shell to the large-section copper busbar 17, which then dissipates the temperature. When the gas is released into the air and the temperature detector 16, which is fixedly installed on the upper side of the cabinet 1, detects that the temperature of the gas inside the cabinet 1 is high, the controller 3 controls the start of the connecting water pump 29. Driven by the connecting water pump 29, the connecting water pump 29 draws the coolant inside the cooling box 8 into the mounting connecting plate 9. As a result, the coolant inside the mounting connecting plate 9 is evenly distributed inside the mounting cooling pipe 10, and the coolant inside the mounting connecting plate 9 exchanges heat with the outer shell of the cabinet 1, thereby reducing the temperature inside the cabinet 1 and facilitating the cooling of the gas inside the cabinet 1.

[0044] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A CGIS gas-insulated cabinet, comprising: The cabinet (1) has a cabinet door (2) on its front side, and an air inflator (4) is installed on the upper middle side of the cabinet (1). Its characteristic is that it further includes: A connecting buffer chamber (18) is installed inside the lower side of the cabinet (1), and a pressure relief pipe (20) is connected to the upper middle side of the connecting buffer chamber (18). An installation block (21) is installed inside the upper side of the connecting buffer chamber (18), and a pressure reducing structure is connected to the outside of the installation block (21). The pressure reducing structure includes a sealing plate (22), a connecting block (23), and a spring (24). The sealing plate (22) is installed outside the installation block (21). The left side of the sealing plate (22) is connected to the connecting block (23), and a spring (24) is provided inside the connecting block (23). Mounting plate (6) is installed on the lower left side of cabinet (1), and a cooling box (8) is provided on the upper middle side of mounting plate (6). A limiting structure is connected to the upper outer side of mounting plate (6), and the limiting structure includes a connecting plate (13), a support block (14) and a limiting rod (26). The connecting plate (13) is installed on the upper outer side of mounting plate (6), and a support block (14) is connected to the outer side of connecting plate (13). A limiting rod (26) is connected to the lower inner side of connecting plate (13).

2. The CGIS gas-insulated cabinet according to claim 1, characterized in that: A temperature detector (16) is fixedly installed on the upper inside of the cabinet (1), and a pressure detector (15) is installed on the left inside of the cabinet (1). An alarm (5) is installed on the upper front of the cabinet (1), and a large cross-section copper busbar (17) is installed on the right side of the cabinet (1).

3. The CGIS gas-insulated cabinet according to claim 1, characterized in that: A controller (3) is also fixedly installed on the front middle side of the cabinet door (2).

4. A CGIS gas-insulated cabinet according to claim 1, characterized in that: A mounting connection plate (9) is fixedly installed on the right side of the cooling box (8), and a coolant inlet pipe (11) is installed on the upper rear side of the mounting connection plate (9). A connecting water pump (29) is fixedly installed on the lower front side of the cooling box (8), and a mounting cooling pipe (10) is installed on the front side of the connecting water pump (29).

5. A CGIS gas-insulated cabinet according to claim 4, characterized in that: A connecting fixing plate (12) is fixedly installed on the lower left side of the cooling box (8), and a movable fixing rod (25) is movably connected to the middle side of the lower end of the connecting fixing plate (12). A connecting fixing block (27) is fixedly installed on the outer side of the middle part of the cooling box (8), and a limit connecting rod (28) is movably connected to the middle part of the connecting fixing block (27).

6. A CGIS gas-insulated cabinet according to claim 4, characterized in that: The cooling pipes (10) are evenly distributed inside the mounting connection plate (9), and the cooling pipes (10) are fitted to the cabinet (1).

7. A CGIS gas-insulated cabinet according to claim 1, characterized in that: The connecting plate (13) and the mounting plate (6) are fitted together, and the connecting plate (13) and the limiting rod (26) are threaded together.

8. A CGIS gas-insulated cabinet according to claim 1, characterized in that: A heat dissipation fin (19) is also fixedly installed on the lower inner side of the connecting buffer cavity (18).

9. A CGIS gas-insulated cabinet according to claim 1, characterized in that: The sealing plate (22) is rotatably connected to the mounting block (21), and the sealing plate (22) is fitted to the pressure relief pipe (20).

10. A CGIS gas-insulated cabinet according to claim 5, characterized in that: The movable fixing rod (25) is threadedly connected to the mounting plate (6), and a support plate (7) is also provided on the inner side of the mounting plate (6).

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