A gas insulated switch cabinet

Abstract

The present application relates to a gas insulated switchgear, and relates to the technical field of switchgear, which comprises a cabinet body, on which a pressure regulating mechanism, a cooling mechanism and a filtering mechanism are arranged, and the pressure regulating mechanism comprises: an air outlet pipe, the air outlet pipe is fixedly mounted on the top of the cabinet body, and one end of the air outlet pipe is communicated with the interior of the cabinet body; an air inlet pipe, the air inlet pipe is fixedly mounted on the top of the cabinet body, and one end of the air inlet pipe is communicated with the interior of the cabinet body; a first connecting pipe, one end of the first connecting pipe is fixedly connected and communicated with an end of the air outlet pipe away from the cabinet body, and the other end of the first connecting pipe is fixedly connected and communicated with an end of the air inlet pipe away from the cabinet body; the present application has the effect of improving the stability of the gas insulated switchgear.

Description

Technical Field

[0001] The present application relates to the technical field of switch cabinets, and in particular to a gas insulated switch cabinet. Background Art

[0002] Gas Insulated Switchgear (GIS) is a kind of power equipment that uses gas as the insulating medium, usually used in high-voltage and ultra-high-voltage power systems. Its key feature is that it uses sulfur hexafluoride (SF6) gas as the main insulating and arc-extinguishing medium. Compared with traditional air-insulated switchgear, gas-insulated switchgear is smaller in size and has better insulation performance. Therefore, it is widely used in urban substations, industrial facilities, high-voltage transmission lines and other occasions, especially suitable for places with limited space.

[0003] As the main insulating and arc-extinguishing medium of gas-insulated switchgear, the good insulation properties and stability of sulfur hexafluoride gas are the key to the normal operation of gas-insulated switchgear. The normal operation of gas-insulated switchgear requires that the internal sulfur hexafluoride gas be maintained within a specific pressure range. However, changes in ambient temperature, decomposition of the gas itself, or aging of equipment can cause gas pressure fluctuations, which in turn affects the stability of the gas-insulated switchgear. Summary of the invention

[0004] In order to improve the stability of a gas insulated switchgear, the present application provides a gas insulated switchgear.

[0005] The present application provides a gas-insulated switchgear, which adopts the following technical solution:

[0006] A gas insulated switchgear comprises a cabinet body, wherein a voltage regulating mechanism, a cooling mechanism and a filtering mechanism are arranged on the cabinet body, wherein the voltage regulating mechanism is connected to the cooling mechanism, and the filtering mechanism is connected to the voltage regulating mechanism; the voltage regulating mechanism comprises:

[0007] An air outlet pipe, the air outlet pipe is fixedly mounted on the top of the cabinet, and one end of the air outlet pipe is communicated with the interior of the cabinet;

[0008] An air intake duct, the air intake duct is fixedly mounted on the top of the cabinet, and one end of the air intake duct is communicated with the interior of the cabinet;

[0009] a first connecting pipe, one end of which is fixedly connected and communicated with an end of the air outlet pipe away from the cabinet, and the other end of which is fixedly connected and communicated with an end of the air inlet pipe away from the cabinet;

[0010] a one-way valve, the one-way valve being fixedly installed at a position where the air inlet pipe is connected to the cabinet, the one-way valve being connected to the air inlet pipe, and the one-way valve being connected to the interior of the cabinet; a slider, the slider being cylindrical, the slider being slidably installed in the air outlet pipe, and the side wall of the slider being in contact with the side wall of the air outlet pipe;

[0011] A first connection hole, wherein the first connection hole is provided on the slider, one end of the first connection hole is located on an end of the slider close to the cabinet, the other end of the first connection hole is located on a side wall of the slider, and the end of the first connection hole located on the side wall of the slider can be communicated with the first connection pipe;

[0012] A first spring, wherein the first spring is disposed in the air outlet duct, one end of the first spring is fixedly connected to an end of the sliding block close to the cabinet, and the other end of the first spring is fixedly connected to an inner wall of the air outlet duct.

[0013] By adopting the above technical solution, when the internal temperature of the gas-insulated switch cabinet increases, causing the pressure to increase, the gas in the gas-insulated switch cabinet enters the first connecting pipe under the action of pressure, so that the pressure in the gas-insulated switch cabinet decreases; when the temperature in the gas-insulated switch cabinet decreases, the pressure decreases. At this time, under the action of pressure, the one-way valve opens, and the gas in the first connecting pipe flows into the gas-insulated switch cabinet, so that the pressure increases, thereby avoiding the insufficient gas pressure inside the gas-insulated switch cabinet to affect the operation of the equipment, which is beneficial to improving the stability of the gas-insulated switch cabinet.

[0014] Optionally, the cooling mechanism includes:

[0015] a second connecting pipe, one end of which is fixedly connected and communicated with an end of the air outlet pipe away from the cabinet, and a straight-line distance between a communication position between the second connecting pipe and the air outlet pipe and the cabinet is greater than a straight-line distance between a communication position between the first connecting pipe and the air outlet pipe and the cabinet;

[0016] A first gas storage tank, wherein an air inlet of the first gas storage tank is fixedly connected and communicated with an end of the second connecting pipe away from the air outlet pipe;

[0017] a first vacuum pump, wherein an air inlet of the first vacuum pump is connected to an air outlet of the first air storage tank;

[0018] a second gas storage tank, wherein an air inlet of the second gas storage tank is connected to an air outlet of the first vacuum pump, and an air outlet of the second gas storage tank is connected to an end of the air inlet pipeline away from the cabinet;

[0019] a second connection hole, wherein the second connection hole is provided on the slider, one end of the second connection hole is connected to the first connection hole, the other end of the second connection hole is provided on the side wall of the slider, and one end of the second connection hole provided on the side wall of the slider can be communicated with the second connection pipe;

[0020] A solenoid valve, the solenoid valve being fixedly mounted at a communication position between the second gas storage tank and the air intake pipe;

[0021] A controller, wherein the controller is fixedly mounted on the cabinet, and the controller is electrically connected to the solenoid valve and the first vacuum pump;

[0022] A temperature sensor is fixedly installed in the cabinet and is electrically connected to the controller.

[0023] By adopting the above technical solution, when the temperature sensor detects that the temperature in the gas-insulated switch cabinet is too high, the first vacuum pump is started and the solenoid valve is opened under the action of the controller; the gas in the gas-insulated switch cabinet enters the first gas storage tank, and the gas in the second gas storage tank enters the gas-insulated switch cabinet. By quickly replacing the gas in the gas-insulated switch cabinet, the temperature in the gas-insulated switch cabinet drops rapidly, which is beneficial to the stability of the gas-insulated switch cabinet.

[0024] Optionally, the filtering mechanism includes:

[0025] a first filter assembly, the first filter assembly being disposed in the second connecting pipe, and the first filter assembly being used for filtering the gas flowing through the cooling mechanism;

[0026] a second filter assembly, the second filter assembly being disposed in the first connecting pipe, and the second filter assembly being used for filtering the gas flowing through the pressure regulating mechanism;

[0027] A dust removal component is arranged on the sliding block, and is used to remove dust collected by the first filter component and the second filter component.

[0028] By adopting the above technical solution, when the operator performs maintenance, the dust collected by the first filter component and the second filter component can be quickly removed through the dust removal component, thereby avoiding the dust from affecting the use of the gas insulated switchgear and facilitating the stability of the gas insulated switchgear.

[0029] Optionally, the first filtering component includes:

[0030] a first filter screen, the first filter screen being slidably mounted on one end of the second connecting pipe close to the air outlet pipe;

[0031] A second spring, one end of the second spring is fixedly mounted on an end of the first filter screen away from the air outlet pipe, and the other end of the second spring is fixedly connected to the inner wall of the second connecting pipe.

[0032] By adopting the above technical solution, under the action of pressure, the first filter screen slides in the direction away from the gas outlet pipe, and the second spring is compressed. When the first filter screen is reset under the action of the second spring, the vibration caused causes the dust collected thereon to fall into the dust removal assembly, thereby preventing the dust from affecting the use of the gas insulated switchgear and facilitating the stability of the gas insulated switchgear.

[0033] Optionally, the second filtering component includes:

[0034] a second filter screen, the second filter screen being slidably mounted on one end of the first connecting pipe close to the air outlet pipe;

[0035] A third spring, one end of the third spring is fixedly mounted on an end of the second filter screen away from the air outlet pipe, and the other end of the third spring is fixedly connected to the inner wall of the first connecting pipe.

[0036] By adopting the above technical solution, under the action of pressure, the second filter screen slides in the direction away from the air outlet pipe, and the third spring is compressed. When the second filter screen is reset under the action of the third spring, the vibration caused causes the dust collected thereon to fall into the dust removal assembly, thereby preventing the dust from affecting the use of the gas insulated switchgear and facilitating the stability of the gas insulated switchgear.

[0037] Optionally, the dust removal component includes:

[0038] A dust collecting groove, the dust collecting groove is arranged on an end of the sliding block away from the cabinet;

[0039] A dust removal cover, which is detachably mounted on the second connecting pipe and is located in the sliding direction of the slider;

[0040] A pull rod, one end of which is fixedly connected to the slider, and the other end of which is passed through and slidably mounted on the dust removal cover.

[0041] By adopting the above technical solution, when the staff maintains the gas-insulated switchgear, they open the dust cover and pull the pull rod to move the slider away from the cabinet body. When the open end of the dust collecting groove is close to the opening of the second connecting pipe after the dust cover is removed, the staff can take out the dust in the dust collecting groove, thereby preventing the dust from affecting the use of the gas-insulated switchgear and facilitating the stability of the gas-insulated switchgear.

[0042] Optionally, a second vacuum pump is fixedly installed on the cabinet, the second vacuum pump is a bidirectional pump, an air inlet of the second vacuum pump is connected to the interior of the cabinet, an air outlet of the second vacuum pump is connected to the outside, and the second vacuum pump is electrically connected to the controller.

[0043] By adopting the above technical solution, the second vacuum pump is started in reverse, the gas-insulated switchgear is evacuated to a vacuum and then the original gas is added, thereby preventing the original gas from being contaminated by external gas and affecting the use of the gas-insulated switchgear, thereby improving the stability of the gas-insulated switchgear.

[0044] Optionally, the upper cover of the cabinet side wall is provided with a heat insulation layer.

[0045] By adopting the above technical solution, the temperature inside the gas-insulated switch cabinet is prevented from being excessively affected by the temperature of the external environment, which is beneficial to improving the stability of the gas-insulated switch cabinet.

[0046] In summary, the present application includes at least one of the following beneficial technical effects:

[0047] When the internal temperature of the gas-insulated switchgear increases, resulting in an increase in pressure, the gas in the gas-insulated switchgear enters the first connecting pipe under the action of pressure, so that the pressure in the gas-insulated switchgear decreases; when the temperature in the gas-insulated switchgear decreases, the pressure decreases. At this time, under the action of pressure, the one-way valve opens, and the gas in the first connecting pipe flows into the gas-insulated switchgear, so that the pressure increases, thereby avoiding the insufficient gas pressure inside the gas-insulated switchgear affecting the operation of the equipment, which is beneficial to improving the stability of the gas-insulated switchgear;

[0048] When the temperature sensor detects that the temperature in the gas-insulated switchgear is too high, the first vacuum pump starts and the solenoid valve opens under the action of the controller; the gas in the gas-insulated switchgear enters the first gas storage tank, and the gas in the second gas storage tank enters the gas-insulated switchgear. By quickly replacing the gas in the gas-insulated switchgear, the temperature in the gas-insulated switchgear drops rapidly, which is beneficial to improving the stability of the gas-insulated switchgear;

[0049] When the operator performs maintenance, the dust collected by the first filter assembly and the second filter assembly can be quickly removed through the dust removal assembly, thereby preventing the dust from affecting the use of the gas insulated switchgear and helping to improve the stability of the gas insulated switchgear. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0051] Figure 2 is a structural cross-sectional view of an embodiment of the present application;

[0052] Figure 3 This is an embodiment of the present application Figure 2 Enlarged view of point A.

[0053] Description of reference numerals:

[0054] 1. Cabinet;

[0055] 2. pressure regulating mechanism; 21. air outlet pipe; 22. air inlet pipe; 23. first connecting pipe; 24. one-way valve; 25. slider; 26. first connecting hole; 27. first spring;

[0056] 3. Cooling mechanism; 31. Second connecting pipeline; 32. First gas storage tank; 33. First vacuum pump; 34. Second gas storage tank; 35. Second connecting hole; 36. Solenoid valve; 37. Controller; 38. Temperature sensor;

[0057] 41. first filter assembly; 411. first filter screen; 412. second spring; 42. second filter assembly; 421. second filter screen; 422. third spring; 43. dust removal assembly; 431. dust collecting slot; 432. dust removal cover; 433. pull rod;

[0058] 5. Second vacuum pump. DETAILED DESCRIPTION

[0059] The following is combined with Figure 1-3 This application is described in further detail.

[0060] An embodiment of the present application discloses a gas insulated switchgear.

[0061] Reference Figure 1 A gas insulated switch cabinet includes a cabinet body 1, on the top wall of which a voltage regulating mechanism 2, a cooling mechanism 3 and a filtering mechanism are arranged, wherein the voltage regulating mechanism 2 is connected to the cooling mechanism 3, and the filtering mechanism is connected to the voltage regulating mechanism 2.

[0062] Reference Figure 2 The pressure regulating mechanism 2 includes an air outlet pipe 21, which is vertically upward and fixedly installed on the top wall of the cabinet 1, and one end of the air outlet pipe 21 is connected to the interior of the cabinet 1; the other end of the air outlet pipe 21 is fixedly connected and connected to a first connecting pipe 23, and the end of the first connecting pipe 23 away from the air outlet pipe 21 is fixedly connected and connected to an air inlet pipe 22, and the end of the air inlet pipe 22 away from the first connecting pipe 23 is fixedly connected and connected to a one-way valve 24, and the end of the one-way valve 24 away from the air inlet pipe 22 is fixedly installed on the top wall of the cabinet 1 and connected to the interior of the cabinet 1.

[0063] Reference Figure 2 and 3A slider 25 is slidably installed in the air outlet pipe 21, and the slider 25 is cylindrical. The side wall of the slider 25 abuts against the side wall of the air outlet pipe 21; a first connecting hole 26 is opened on the slider 25, and the axis of the first connecting hole 26 is L-shaped. One end of the first connecting hole 26 is located on the end of the slider 25 close to the cabinet 1, and the other end of the first connecting hole 26 is located on the side wall of the slider 25. The end of the first connecting hole 26 located on the side wall of the slider 25 can be connected to the first connecting pipe 23; a first spring 27 is arranged inside the air outlet pipe 21, one end of the first spring 27 is fixedly connected to the end of the slider 25 close to the cabinet 1, and the other end of the first spring 27 is fixedly connected to the inner wall of the air outlet pipe 21.

[0064] When the internal temperature of the gas-insulated switch cabinet increases, resulting in an increase in pressure, the slider 25 moves away from the cabinet body 1 under the action of pressure, and the first spring 27 is stretched. When the slider 25 moves to the first connecting hole 26 and communicates with the first connecting pipe 23, the gas in the gas-insulated switch cabinet enters the first connecting pipe 23, so that the pressure in the gas-insulated switch cabinet decreases. At the same time, the slider 25 is reset under the action of the first spring 27. When the temperature in the gas-insulated switch cabinet decreases, the pressure decreases. At this time, under the action of pressure, the one-way valve 24 is opened, and the gas in the first connecting pipe 23 flows into the gas-insulated switch cabinet, so that the pressure increases, thereby avoiding the insufficient gas pressure inside the gas-insulated switch cabinet affecting the operation of the equipment, which is conducive to improving the stability of the gas-insulated switch cabinet.

[0065] Reference Figure 2 The cooling mechanism 3 includes a second connecting pipe 31, one end of which is fixedly connected and communicated with an end of the air outlet pipe 21 away from the cabinet 1, and a straight-line distance between a communication position of the second connecting pipe 31 and the air outlet pipe 21 and the cabinet 1 is greater than a straight-line distance between a communication position of the first connecting pipe 23 and the air outlet pipe 21 and the cabinet 1; an end of the second connecting pipe 31 away from the air outlet pipe 21 is fixedly connected and communicated with an air inlet of a first gas storage tank 32; an air outlet of the first gas storage tank 32 is fixedly connected and communicated with an air inlet of a first vacuum pump 33; an air outlet of the first vacuum pump 33 is fixedly connected and communicated with an air inlet of a second gas storage tank 34, and an air outlet of the second gas storage tank 34 is fixedly connected and communicated with an end of the air inlet pipe 22 away from the cabinet 1.

[0066] Reference Figure 3 A second connecting hole 35 is provided on the slider 25, one end of the second connecting hole 35 is communicated with the first connecting hole 26, and the other end of the second connecting hole 35 is provided on the side wall of the slider 25. The second connecting hole 35 is coaxially arranged with one end of the first connecting hole 26 located on the side wall of the slider 25, and one end of the second connecting hole 35 provided on the side wall of the slider 25 can be communicated with the second connecting pipe 31.

[0067] Reference Figure 2 A solenoid valve 36 is provided at the communication position between the second gas storage tank 34 and the air intake pipe 22 ; a controller 37 is provided on the cabinet 1 , and the controller 37 is electrically connected to the solenoid valve 36 and the first vacuum pump 33 .

[0068] Reference Figure 3 A temperature sensor 38 is fixedly installed in the cabinet 1 , and the temperature sensor 38 is electrically connected to the controller 37 .

[0069] In the initial state, there is no gas in the first gas storage tank 32, and the second gas storage tank 34 is full of gas. When in use, when the temperature sensor 38 detects that the temperature in the gas insulated switch cabinet is too high, the controller 37 controls the first vacuum pump 33 to start. The pressure generated by the first vacuum pump 33 slides the slider 25 in a direction away from the cabinet 1, so that the second connection hole 35 is connected to the second connection pipe 31. At this time, one end of the first connection hole 26 located on the side wall of the slider 25 is blocked by the side wall of the gas outlet pipe 21, so the gas in the gas insulated switch cabinet first flows into the end of the first connection hole 26 close to the cabinet 1, and then flows through the second connection hole 35 into the first gas storage tank 32. At the same time, the controller 37 controls the solenoid valve 36 to open. Under the pressure of the first vacuum pump 33, the gas in the second gas storage tank 34 enters the gas insulated switch cabinet. By quickly replacing the gas in the gas insulated switch cabinet, the temperature in the gas insulated switch cabinet drops rapidly, which is conducive to improving the stability of the gas insulated switch cabinet.

[0070] Reference Figure 3 The filtering mechanism includes a first filtering component 41, which is arranged in the second connecting pipe 31, and the first filtering component 41 is used to filter the gas flowing through the cooling mechanism 3; a second filtering component 42 is arranged in the first connecting pipe 23, and the second filtering component 42 is used to filter the gas flowing through the pressure regulating mechanism 2; a dust removal component 43 is arranged on the slider 25, and the dust removal component 43 is used to remove dust collected by the first filtering component 41 and the second filtering component 42.

[0071] When in use, the first filter assembly 41 can filter the gas flowing through the cooling mechanism 3; the second filter assembly 42 can filter the gas flowing through the pressure regulating mechanism 2; when the operator performs maintenance, the dust collected by the first filter assembly 41 and the second filter assembly 42 can be quickly removed through the dust removal assembly 43, thereby avoiding the dust from affecting the use of the gas insulated switchgear, which is beneficial to improving the stability of the gas insulated switchgear.

[0072] Reference Figure 3The first filter assembly 41 includes a first filter screen 411 and a second spring 412. The first filter screen 411 is slidably installed on one end of the second connecting pipe 31 close to the outlet pipe 21, one end of the second spring 412 is fixedly installed on one end of the first filter screen 411 away from the outlet pipe 21, and the other end of the second spring 412 is fixedly connected to the inner wall of the second connecting pipe 31.

[0073] When the cooling mechanism 3 replaces the gas in the gas-insulated switchgear, the first filter screen 411 slides away from the gas outlet pipe 21 under the action of pressure, and the second spring 412 is compressed. When the first vacuum pump 33 stops running, the first filter screen 411 is reset under the action of the second spring 412. At the same time, the vibration caused by the first filter screen 411 during the reset process allows the dust collected thereon to fall into the dust removal assembly 43, thereby preventing the dust from affecting the use of the gas-insulated switchgear and facilitating the improvement of the stability of the gas-insulated switchgear.

[0074] Reference Figure 3 The second filter assembly 42 includes a second filter screen 421 and a third spring 422. The second filter screen 421 is slidably installed on one end of the first connecting pipe 23 close to the outlet pipe 21; one end of the third spring 422 is fixedly installed on one end of the second filter screen 421 away from the outlet pipe 21, and the other end of the third spring 422 is fixedly connected to the inner wall of the first connecting pipe 23.

[0075] When the pressure regulating mechanism 2 adjusts the pressure in the gas insulated switch cabinet, the second filter screen 421 slides away from the gas outlet pipe 21 under the action of the pressure, and the third spring 422 is compressed. After the gas in the first connecting pipe 23 enters the gas insulated switch cabinet, the second filter screen 421 is reset under the action of the third spring 422. At the same time, the vibration caused by the second filter screen 421 during the reset process allows the dust collected thereon to fall into the dust removal assembly 43, thereby preventing the dust from affecting the use of the gas insulated switch cabinet and facilitating the improvement of the stability of the gas insulated switch cabinet.

[0076] Reference Figure 3 The dust removal component 43 includes a dust collecting groove 431, which is opened on the end of the slider 25 away from the cabinet 1; a pull rod 433 is fixedly connected to the end of the slider 25 away from the cabinet 1, and the length direction of the pull rod 433 is set along the sliding direction of the slider 25. The other end of the pull rod 433 is connected to a dust removal cover 432, the pull rod 433 is penetrated and slidably installed on the dust removal cover 432, and the dust removal cover 432 is detachably installed on the second connecting pipe 31, and the dust removal cover 432 is located in the sliding direction of the slider 25.

[0077] The dust collected by the first filter 411 and the second filter 421 falls under the action of the vibration force and enters the dust collecting groove 431. When the staff maintains the gas insulated switch cabinet, they open the dust cover 432 and pull the pull rod 433 to move the slider 25 away from the cabinet body 1. When the opening end of the dust collecting groove 431 is close to the opening of the second connecting pipe 31 after the dust cover 432 is removed, the staff can take out the dust in the dust collecting groove 431, which prevents the dust from affecting the use of the gas insulated switch cabinet and is conducive to improving the stability of the gas insulated switch cabinet.

[0078] Reference Figure 1 A second vacuum pump 5 is fixedly installed on the top wall of the cabinet 1. The second vacuum pump 5 is a bidirectional pump. The air inlet of the second vacuum pump 5 is connected to the inside of the cabinet 1, and the air outlet of the second vacuum pump 5 is connected to the outside. The second vacuum pump 5 is electrically connected to the controller 37.

[0079] When the staff needs to perform maintenance on the gas-insulated switch cabinet, the controller 37 controls the first vacuum pump 33 to start and the solenoid valve 36 to close, so that all the gas in the gas-insulated switch cabinet is pumped into the first gas storage tank 32. Then the second vacuum pump 5 is started to increase the pressure in the gas-insulated switch cabinet to prevent the cabinet door from being unable to open, which is conducive to improving the maintenance efficiency. After the maintenance is completed, the second vacuum pump 5 is started in reverse to evacuate the gas-insulated switch cabinet to a vacuum before adding the original gas to prevent the original gas from being contaminated by external gas and affecting the use of the gas-insulated switch cabinet, thereby improving the stability of the gas-insulated switch cabinet.

[0080] Referring to the cabinet 1 , a heat insulating layer is provided on the upper cover of the side wall of the cabinet 1 .

[0081] The thermal insulation layer can prevent the temperature inside the gas-insulated switchgear from being excessively affected by the temperature of the external environment, which is beneficial to improving the stability of the gas-insulated switchgear.

[0082] The implementation principle of a gas-insulated switch cabinet in the embodiment of the present application is as follows: when the internal temperature of the gas-insulated switch cabinet increases, resulting in an increase in pressure, the slider 25 moves away from the cabinet body 1 under the action of pressure, and the first spring 27 is stretched. When the slider 25 moves to the first connecting hole 26 and communicates with the first connecting pipe 23, the gas in the gas-insulated switch cabinet enters the first connecting pipe 23, so that the pressure in the gas-insulated switch cabinet decreases. At the same time, the slider 25 is reset under the action of the first spring 27. When the temperature in the gas-insulated switch cabinet decreases, the pressure decreases. At this time, the one-way valve 24 is opened under the action of pressure, and the gas in the first connecting pipe 23 flows into the gas-insulated switch cabinet, so that the pressure increases. When the temperature sensor 38 detects that the temperature in the gas-insulated switch cabinet is too high, the controller 37 controls the first vacuum pump 33 to start. The pressure generated by the first vacuum pump 33 slides the slider 25 in the direction away from the cabinet body 1, so that the second connecting hole 35 is connected to the second connecting pipe 31. The gas in the gas-insulated switch cabinet enters the first gas storage tank 32. At the same time, the controller 37 controls the solenoid valve 36 to open. Under the pressure of the first vacuum pump 33, the gas in the second gas storage tank 34 enters the gas insulated switch cabinet. By quickly replacing the gas in the gas insulated switch cabinet, the temperature in the gas insulated switch cabinet drops rapidly, which is beneficial to improving the stability of the gas insulated switch cabinet. The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A gas insulated switchgear, characterized in that: It comprises a cabinet (1), on which a pressure regulating mechanism (2), a cooling mechanism (3) and a filtering mechanism are arranged, the pressure regulating mechanism (2) is connected to the cooling mechanism (3), and the filtering mechanism is connected to the pressure regulating mechanism (2); The pressure regulating mechanism (2) comprises: An air outlet pipe (21), the air outlet pipe (21) being fixedly mounted on the top of the cabinet (1), and one end of the air outlet pipe (21) being in communication with the interior of the cabinet (1); An air intake pipe (22), the air intake pipe (22) being fixedly mounted on the top of the cabinet (1), and one end of the air intake pipe (22) being in communication with the interior of the cabinet (1); a first connecting pipe (23), one end of the first connecting pipe (23) being fixedly connected to and in communication with an end of the air outlet pipe (21) away from the cabinet (1), and the other end of the first connecting pipe (23) being fixedly connected to and in communication with an end of the air inlet pipe (22) away from the cabinet (1); a one-way valve (24), the one-way valve (24) being fixedly mounted at a position where the air intake pipe (22) is in communication with the cabinet (1), the one-way valve (24) being in communication with the air intake pipe (22), and the one-way valve (24) being in communication with the interior of the cabinet (1); A slider (25), the slider (25) is cylindrical, the slider (25) is slidably installed in the air outlet pipe (21), and the side wall of the slider (25) abuts against the side wall of the air outlet pipe (21); a first connection hole (26), the first connection hole (26) being opened on the slider (25), one end of the first connection hole (26) being located on an end of the slider (25) close to the cabinet (1), the other end of the first connection hole (26) being located on a side wall of the slider (25), and the end of the first connection hole (26) located on the side wall of the slider (25) being able to communicate with the first connection pipe (23); a first spring (27), the first spring (27) being arranged in the air outlet pipe (21), one end of the first spring (27) being fixedly connected to an end of the slider (25) close to the cabinet (1), and the other end of the first spring (27) being fixedly connected to an inner wall of the air outlet pipe (21); The cooling mechanism (3) comprises: a second connecting pipe (31), one end of the second connecting pipe (31) being fixedly connected to and in communication with one end of the air outlet pipe (21) away from the cabinet (1), and a straight-line distance between a connecting position of the second connecting pipe (31) and the air outlet pipe (21) and the cabinet (1) being greater than a straight-line distance between a connecting position of the first connecting pipe (23) and the air outlet pipe (21) and the cabinet (1); A first gas storage tank (32), wherein an air inlet of the first gas storage tank (32) is fixedly connected and communicated with an end of the second connecting pipe (31) away from the air outlet pipe (21); a first vacuum pump (33), wherein an air inlet of the first vacuum pump (33) is connected to an air outlet of the first air storage tank (32); a second gas storage tank (34), wherein the gas inlet of the second gas storage tank (34) is connected to the gas outlet of the first vacuum pump (33), and the gas outlet of the second gas storage tank (34) is connected to an end of the gas inlet pipe (22) away from the cabinet (1); a second connecting hole (35), the second connecting hole (35) being provided on the slider (25), one end of the second connecting hole (35) being connected to the first connecting hole (26), the other end of the second connecting hole (35) being provided on the side wall of the slider (25), and one end of the second connecting hole (35) provided on the side wall of the slider (25) being capable of communicating with the second connecting pipe (31); a solenoid valve (36), the solenoid valve (36) being fixedly mounted at a communication position between the second gas storage tank (34) and the air intake pipe (22); A controller (37), wherein the controller (37) is fixedly mounted on the cabinet (1), and the controller (37) is electrically connected to the solenoid valve (36) and the first vacuum pump (33); A temperature sensor (38), the temperature sensor (38) is fixedly installed in the cabinet (1), and the temperature sensor (38) is electrically connected to the controller (37); The filtering mechanism comprises: a first filter assembly (41), the first filter assembly (41) being arranged in the second connecting pipe (31), the first filter assembly (41) being used for filtering gas flowing through the cooling mechanism (3); a second filter assembly (42), the second filter assembly (42) being arranged in the first connecting pipe (23), the second filter assembly (42) being used for filtering the gas flowing through the pressure regulating mechanism (2); a dust removal component (43), the dust removal component (43) being arranged on the slider (25), the dust removal component (43) being used to remove dust collected by the first filter component (41) and the second filter component (42); The first filter assembly (41) comprises: a first filter screen (411), the first filter screen (411) being slidably mounted on one end of the second connecting pipe (31) close to the air outlet pipe (21); a second spring (412), one end of the second spring (412) being fixedly mounted on an end of the first filter screen (411) away from the air outlet pipe (21), and the other end of the second spring (412) being fixedly connected to an inner wall of the second connecting pipe (31); The second filter assembly (42) comprises: a second filter screen (421), the second filter screen (421) being slidably mounted on one end of the first connecting pipe (23) close to the air outlet pipe (21); a third spring (422), one end of the third spring (422) being fixedly mounted on an end of the second filter screen (421) away from the air outlet pipe (21), and the other end of the third spring (422) being fixedly connected to the inner wall of the first connecting pipe (23); The dust removal component (43) comprises: A dust collecting groove (431), the dust collecting groove (431) being disposed on an end of the sliding block (25) away from the cabinet (1); a dust removal cover (432), the dust removal cover (432) being detachably mounted on the second connecting pipe (31), the dust removal cover (432) being located in the sliding direction of the slider (25); A pull rod (433), one end of which is fixedly connected to the slider (25), and the other end of which is passed through and slidably mounted on the dust removal cover (432).

2. The gas insulated switchgear according to claim 1, characterized in that: A second vacuum pump (5) is fixedly mounted on the cabinet (1); the second vacuum pump (5) is a bidirectional pump; an air inlet of the second vacuum pump (5) is connected to the interior of the cabinet (1); an air outlet of the second vacuum pump (5) is connected to the outside; and the second vacuum pump (5) is electrically connected to the controller (37).

3. The gas insulated switchgear according to claim 1, characterized in that: The upper cover of the side wall of the cabinet (1) is provided with a heat insulation layer.

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