Novel gas insulation ring main unit and installation method

Abstract

The invention relates to a novel gas insulation ring main unit and an installation method, and relates to the technical field of electrical equipment, the novel gas insulation ring main unit comprises a supporting cabinet, a cabinet body, a detection assembly, a heat exchange assembly and a cooling assembly, the cabinet body is located in the supporting cabinet, and the detection assembly is arranged in the cabinet body and is used for detecting the temperature in the cabinet body; the heat exchange assembly comprises a heat exchange pipe, a one-way valve and an opening and closing part, the two ends of the heat exchange pipe communicate with the bottom and the top of the cabinet body correspondingly, and the heat exchange pipe is sequentially divided into an input end and an output end in the vertical upward direction. The one-way valve is arranged at the output end of the heat exchange tube; the opening and closing part is arranged on the heat exchange tube and is used for opening the input end of the heat exchange tube; and the cooling assembly is arranged on the heat exchange tube and is used for cooling the gas in the cabinet body. The application has the effect of improving the safety of the ring main unit.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a novel gas insulated ring main unit and an installation method thereof. Background Art

[0002] Gas AC metal enclosed ring main unit is an environmentally friendly high voltage switchgear. The gas insulated ring main unit is filled with insulating medium, and the control and protection of the high voltage power system is achieved through the metal enclosed structure and ring network design.

[0003] At present, general gas-insulated ring main units are operated by the flow of gas in a sealed gas box. When the equipment is running, the gas circulates or flows inside the equipment according to the designed system flow path, playing the role of insulation and arc extinguishing to ensure the normal operation and safety of the equipment.

[0004] However, since the ring main unit is a closed space, insufficient heat dissipation may easily cause the temperature inside the ring main unit to rise rapidly. Summary of the invention

[0005] In order to improve the safety of the ring main unit, the present application provides a novel gas insulated ring main unit and an installation method thereof.

[0006] On the one hand, the present application provides a new type of gas insulated ring main unit, which adopts the following technical solution:

[0007] A new type of gas insulated ring main unit, comprising:

[0008] Support cabinet;

[0009] A cabinet body, located in the supporting cabinet;

[0010] A detection component is disposed in the cabinet and is used to detect the temperature in the cabinet;

[0011] Heat exchange components, including:

[0012] The heat exchange tube has two ends connected to the bottom and the top of the cabinet respectively, and is divided into an input end and an output end in the vertical upward direction;

[0013] A one-way valve, arranged on the output end of the heat exchange tube;

[0014] An opening and closing part, which is arranged on the heat exchange tube and is used to open the input end of the heat exchange tube;

[0015] The cooling component is arranged on the heat exchange tube and is used for cooling the gas in the cabinet.

[0016] By adopting the above technical solution, the temperature inside the cabinet is monitored in real time through the built-in detection component to prevent equipment failure caused by overheating. When the temperature rises abnormally, the opening and closing part opens the input end of the heat exchange tube, and the gas in the cabinet enters the heat exchange tube. The cooling component cools the gas in the cabinet. The cooled gas opens the one-way valve and returns to the cabinet, ensuring the one-way flow of the gas in the heat exchange tube and avoiding the influence of chaotic airflow on the heat dissipation effect. Through effective heat dissipation and temperature control, the ring network cabinet can ensure that the internal equipment operates in a suitable temperature environment, thereby improving the safety of the ring network cabinet.

[0017] Optionally, the detection component includes:

[0018] The induction block is hollow inside and fixed on the inner wall of the cabinet, and the induction block is filled with heat-sensitive gas;

[0019] A driving telescopic rod is fixedly connected to the inner wall of the cabinet, and the rodless cavity of the driving telescopic rod is connected to the induction block through a guide pipe;

[0020] The displacement sensor is fixedly mounted on the movable end of the driving telescopic rod and is used to output a displacement signal of the movable end of the driving telescopic rod.

[0021] By adopting the above technical solution, when the temperature inside the cabinet rises, the thermosensitive gas performs thermal movement, and the thermosensitive gas diffuses into the rodless cavity of the driving telescopic rod through the guide tube. The thermosensitive gas pushes the movable end of the driving telescopic rod to move, and the displacement sensor detects the moving distance of the movable end of the driving telescopic rod and outputs a displacement signal of the movable end of the driving telescopic rod. By analyzing the displacement signal, the temperature condition inside the cabinet can be accurately understood, thereby realizing real-time monitoring of the temperature.

[0022] Optionally, the opening and closing part includes:

[0023] A driving gear, rotatably connected to the inner wall of the cabinet;

[0024] A spur rack is coaxially connected to the movable end of the driving telescopic rod and meshes with the driving gear;

[0025] A gear ring, rotatably connected to the inner wall of the cabinet and meshing with the driving gear;

[0026] A fixing ring, fixedly mounted on the inner wall of the cabinet and located at the input end of the heat exchange tube;

[0027] A plurality of triangular hinges are provided, and the plurality of triangular hinges are arranged around the axis of the fixing ring, and one end of the triangular hinge is rotatably connected to the fixing ring;

[0028] A plurality of bent rods are provided, the plurality of bent rods correspond to the plurality of triangular hinges one by one, and the two ends of the bent rods are rotatably connected to the gear ring and the triangular hinge respectively;

[0029] Wherein, in the initial state, the triangular hinge is in a spliced ​​state.

[0030] By adopting the above technical solution, the heat-sensitive gas drives the movable end of the telescopic rod to move, the movable end of the telescopic rod drives the spur rack to move, the spur rack drives the driving gear to rotate, the driving gear drives the gear ring to rotate, the gear ring drives the bending rod to rotate, the bending rod drives the triangular hinge to rotate, and the input end of the heat exchange tube is opened;

[0031] When the temperature drops, the movable end of the telescopic rod is driven to reset, and the driving gear is driven to rotate through the spur rack, thereby driving the gear ring and the bent rod to move, thereby closing the triangular hinge, thereby being able to quickly respond to changes in temperature inside the cabinet, and making it easy to ensure that the equipment in the cabinet operates in a safe and appropriate temperature environment.

[0032] Optionally, the heat exchange assembly further includes a driving unit, and the driving unit includes:

[0033] An air pump is arranged on the heat exchange tube;

[0034] The controller is fixed on the inner wall of the supporting cabinet, and the air pump and the displacement sensor are both electrically connected to the controller.

[0035] By adopting the above technical solution, when the temperature inside the cabinet rises and exceeds the preset value, the controller responds to the displacement signal output by the displacement sensor and controls the air pump to start. The air pump pumps gas into the heat exchange tube, increasing the flow rate and pressure of the gas in the tube, speeding up the flow exchange of the gas in the cabinet, thereby improving the heat dissipation efficiency.

[0036] Optionally, a coil spring is provided between the driving gear and the inner wall of the cabinet, a central end of the coil spring is fixedly connected to the inner wall of the cabinet, and an edge end of the coil spring is fixedly connected to the driving gear.

[0037] By adopting the above technical solution, the spur rack drives the driving gear to rotate, and the driving gear drives the coil spring to tighten, and the coil spring accumulates elastic force. When the movable end of the driving telescopic rod is reset, the elastic force of the coil spring ensures that the driving gear cannot rotate excessively, thereby making it easy to ensure that the triangular hinge is in a spliced ​​state, thereby improving the airtightness of the cabinet.

[0038] Optionally, the heat exchange tube is spiral-shaped.

[0039] By adopting the above technical solution, compared with the traditional straight pipe design, a longer pipe length can be provided in the same space, thereby increasing the heat exchange area and further improving the heat exchange efficiency.

[0040] Optionally, the cooling component includes:

[0041] A cooling box is fixedly mounted on the inner wall of the supporting cabinet, and the heat exchange tube is passed through the cooling box;

[0042] A water tank, fixedly mounted on the supporting cabinet;

[0043] A water pipe, both ends of which are connected to the water tank and the cooling box respectively;

[0044] A water gun, connected to the water pipe and located in the cooling box;

[0045] The water pump is arranged on the water pipe and is electrically connected to the controller.

[0046] By adopting the above technical solution, the controller controls the water pump to start, the cooling water in the water tank enters the water gun through the water pipe, the water gun sprays water to the heat exchange tube, the heat exchange tube is in direct contact with the cooling water, which greatly increases the heat dissipation area, thereby easily improving the heat exchange efficiency.

[0047] Optionally, the cooling box is connected to a collection box, and the collection box is fixed on the supporting cabinet.

[0048] By adopting the above technical solution, condensed water is collected in time, which helps to keep the environment inside the support cabinet dry, thereby improving the safety of the equipment.

[0049] On the other hand, the present application provides a novel gas insulated ring main unit installation method, which adopts the following technical solution:

[0050] A novel method for installing a gas insulated ring main unit comprises the following steps:

[0051] S1 monitoring: The heat-sensitive gas in the induction block detects the temperature inside the cabinet;

[0052] S2 heat exchange: drive the telescopic rod to open the triangular hinge, and the air pump extracts the gas in the cabinet;

[0053] S3 cooling: The water gun draws cold water, and the cold water cools the heat exchange tubes;

[0054] S4 Reflux: The cooled gas opens the one-way valve and refluxes into the cabinet.

[0055] By adopting the above technical solution, all steps from temperature monitoring to heat exchange, cooling, reflux, etc. are automatically completed by the system, which greatly reduces the difficulty and cost of manual operation and improves work efficiency.

[0056] In summary, the present application includes at least one of the following beneficial technical effects:

[0057] 1. By setting up the induction block, driving telescopic rod and displacement sensor and analyzing the displacement signal, the temperature condition in the cabinet can be accurately understood, thus realizing real-time monitoring of the temperature;

[0058] 2. By setting up heat exchange pipes, one-way valves, opening and closing parts and driving parts, it can quickly respond to changes in the temperature inside the cabinet, making it easy to ensure that the equipment inside the cabinet operates in a safe and appropriate temperature environment;

[0059] 3. By setting up a cooling component, a water gun sprays water to the heat exchange tube, and the heat exchange tube is in direct contact with the cooling water, which makes it easy to improve the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0061] Figure 2 is a schematic diagram of the structure of the detection component in the embodiment of the present application;

[0062] Figure 3 is a cross-sectional view of a heat exchange component and a cooling component in an embodiment of the present application;

[0063] Figure 4 is a cross-sectional view of a detection component in an embodiment of the present application;

[0064] Figure 5 yes Figure 2 Magnified view at A in the middle;

[0065] Figure 6 yes Figure 3 Magnified view at B.

[0066] Description of reference numerals:

[0067] 1. Support cabinet; 11. Opening and closing door; 12. Handle; 2. Cabinet; 3. Detection component; 31. Induction block; 32. Driving telescopic rod; 33. Displacement sensor; 4. Heat exchange component; 41. Heat exchange tube; 42. One-way valve; 43. Opening and closing part; 431. Driving gear; 4311. Coil spring; 432. Straight rack; 433. Gear ring; 434. Fixed ring; 435. Triangular hinge; 436. Bending rod; 44. Driving part; 441. Air pump; 442. Controller; 5. Cooling component; 51. Cooling box; 511. Collection box; 52. Water tank; 53. Water pipe; 54. Water gun; 55. Water pump. DETAILED DESCRIPTION

[0068] The following is combined with Figure 1-6 This application is described in further detail.

[0069] The embodiment of the present application discloses a novel gas insulated ring main unit.

[0070] Reference Figures 1 to 3 A new type of gas insulated ring network cabinet includes a supporting cabinet 1, a cabinet body 2, a detection component 3, a heat exchange component 4 and a cooling component 5. The cabinet body 2 is located in the supporting cabinet 1; the detection component 3 is arranged in the cabinet body 2 and is used to detect the temperature in the cabinet body 2; the heat exchange component 4 is arranged on the cabinet body 2 and is used to exchange the heat in the cabinet body 2; the cooling component 5 is arranged in the supporting cabinet 1 and is used to cool the gas in the cabinet body 2.

[0071] When in use, the detection component 3 monitors the temperature inside the cabinet 2 in real time. When the temperature rises abnormally, the heat exchange component 4 exchanges the heat in the cabinet 2. During the exchange process, the cooling component 5 cools the gas in the cabinet 2, so that the ring network cabinet can ensure that the internal equipment operates in a suitable temperature environment, thereby improving the safety of the ring network cabinet.

[0072] Reference Figure 1 and Figure 2 The support cabinet 1 is in a rectangular box shape and is arranged vertically. One side of the support cabinet 1 is open, and an opening and closing door 11 is hinged at the opening end. A handle 12 is fixed on the end of the opening and closing door 11 away from the hinge axis. The cabinet body 2 is in a rectangular box shape and is arranged vertically. The cabinet body 2 is placed on a support plate in the support cabinet 1.

[0073] Reference Figure 2 and Figure 4 The detection component 3 includes a sensing block 31, a driving telescopic rod 32 and a displacement sensor 33. The sensing block 31 is hollow inside and is fixed on the inner wall of the cabinet 2. The sensing block 31 is filled with a heat-sensitive gas. In the embodiment of the present application, the heat-sensitive gas is ammonia.

[0074] Reference Figure 2 and Figure 4 The driving telescopic rod 32 is horizontally arranged and fixedly connected to the inner wall of the cabinet 2. The rodless cavity of the driving telescopic rod 32 is connected to the sensing block 31 through a guide tube. The displacement sensor 33 is fixedly arranged on the movable end of the driving telescopic rod 32 and is used to output the displacement signal of the movable end of the driving telescopic rod 32.

[0075] Reference Figure 3 and Figure 5 The heat exchange assembly 4 includes a heat exchange tube 41, a one-way valve 42, an opening and closing part 43 and a driving part 44. The heat exchange tube 41 is vertically arranged, and its two ends are respectively connected to the bottom and the top of the cabinet 2. The heat exchange tube 41 is divided into an input end and an output end in the vertical upward direction. The middle part of the heat exchange tube 41 is spiral, and the one-way valve 42 is arranged on the output end of the heat exchange tube 41.

[0076] Reference Figure 3 , Figure 5 and Figure 6The opening and closing part 43 includes a driving gear 431, a spur rack 432, a gear ring 433, a fixing ring 434, a triangular hinge 435 and a bent rod 436. The driving gear 431 is rotatably connected to the inner wall of the cabinet 2. A coil spring 4311 is provided between the driving gear 431 and the inner wall of the cabinet 2. The center end of the coil spring 4311 is fixedly connected to the inner wall of the cabinet 2, and the edge end is fixedly connected to the driving gear 431.

[0077] Reference Figure 2 The spur rack 432 is coaxially fixedly connected to the movable end of the driving telescopic rod 32 and meshes with the driving gear 431. The gear ring 433 is rotatably connected to the inner wall of the cabinet 2 and meshes with the driving gear 431. The fixing ring 434 is fixedly arranged on the inner wall of the cabinet 2 and is located at the input end of the heat exchange tube 41.

[0078] Reference Figure 5 There are multiple triangular hinges 435, which are evenly arranged around the axis of the fixed ring 434, and one end of the triangular hinge 435 is rotatably connected to the fixed ring 434. There are multiple bent rods 436, which correspond to the multiple triangular hinges 435 one by one, and the two ends of the bent rods 436 are rotatably connected to the gear ring 433 and the triangular hinge 435 respectively. In the initial state, the triangular hinge 435 is in a spliced ​​state.

[0079] Reference Figure 3 The driving unit 44 includes an air pump 441 and a controller 442 . The air pump 441 is disposed on the input end of the heat exchange tube 41 . The controller 442 is fixed on the inner wall of the supporting cabinet 1 . The air pump 441 and the displacement sensor 33 are both electrically connected to the controller 442 .

[0080] During use, when the temperature in the cabinet 2 rises, ammonia diffuses from the guide tube to the rodless cavity of the driving telescopic rod 32, and the ammonia pushes the movable end of the driving telescopic rod 32 to move, and the movable end of the driving telescopic rod 32 drives the spur rack 432 to move, and the spur rack 432 drives the driving gear 431 to rotate, and the driving gear 431 drives the coil spring 4311 to tighten, and at the same time drives the gear ring 433 to rotate, and the gear ring 433 drives the bent rod 436 to rotate, and the bent rod 436 drives the triangular hinge 435 to rotate, so as to open the input end of the heat exchange tube 41;

[0081] At the same time, the displacement sensor 33 detects the moving distance of the active end of the driving telescopic rod 32, and outputs a displacement signal of the active end of the driving telescopic rod 32. The controller 442 controls the air pump 441 to start in response to the displacement signal output by the displacement sensor 33. The air pump 441 pumps gas into the heat exchange tube 41, thereby accelerating the flow exchange of gas in the cabinet 2, thereby improving the heat dissipation efficiency.

[0082] When the temperature drops, the movable end of the telescopic rod 32 is driven to reset, and the triangular hinge 435 contracts. Under the elastic force of the coil spring 4311, it is easy to ensure that the triangular hinge 435 is in a spliced ​​state, thereby improving the airtightness of the cabinet 2.

[0083] Reference Figure 3 The cooling component 5 includes a cooling box 51, a water tank 52, a water pipe 53, a water gun 54 and a water pump 55. The cooling box 51 is fixed on the inner wall of the supporting cabinet 1. The cooling box 51 is connected to a collecting box 511. The collecting box 511 is located below the cooling box 51 and is fixed on the supporting cabinet 1.

[0084] Reference Figure 3 The heat exchange tube 41 is passed through the cooling box 51, and the spiral section is located in the cooling box 51. The water tank 52 is fixed on the support cabinet 1, and the two ends of the water pipe 53 are connected to the water tank 52 and the cooling box 51 respectively.

[0085] Reference Figure 3 A plurality of water guns 54 are provided, and the plurality of water guns 54 are evenly arranged in a vertical downward direction, and the plurality of water guns 54 are connected to the input end of the water pipe 53, and the water guns 54 are arranged horizontally and fixed in the cooling box 51. A water pump 55 is arranged on the water pipe 53 and is electrically connected to the controller 442.

[0086] When in use, the controller 442 controls the water pump 55 to start, and the cooling water in the water tank 52 enters the water gun 54 from the water pipe 53. The water gun 54 sprays water to the heat exchange tube 41 to cool the gas. The water flows into the collection box 511. The cooled gas opens the one-way valve 42 and returns to the cabinet 2, ensuring the one-way flow of the gas in the heat exchange tube 41, thereby easily improving the heat exchange efficiency.

[0087] The implementation principle of a novel gas-insulated ring main unit in the embodiment of the present application is as follows: when the temperature in the cabinet 2 rises, ammonia diffuses from the lead pipe into the rodless cavity of the driving telescopic rod 32, and the ammonia pushes the movable end of the driving telescopic rod 32 to drive the spur rack 432 to move, and through the driving gear 431, the spur rack 432 drives the ring gear 433 to rotate, the ring gear 433 drives the bent rod 436 to rotate, and the bent rod 436 drives the triangular hinge 435 to rotate, so as to open the input end of the heat exchange tube 41;

[0088] At the same time, the displacement sensor 33 detects the moving distance of the active end of the driving telescopic rod 32, and outputs a displacement signal of the active end of the driving telescopic rod 32. The controller 442 controls the air pump 441 and the water pump 55 to start in response to the displacement signal output by the displacement sensor 33. The air pump 441 pumps gas into the heat exchange tube 41, thereby accelerating the flow exchange of gas in the cabinet 2.

[0089] The cooling water in the water tank 52 enters the water gun 54 from the water pipe 53, and the water gun 54 sprays water to the heat exchange tube 41 to cool the gas. The cooled gas opens the one-way valve 42 and returns to the cabinet 2, ensuring the one-way flow of the gas in the heat exchange tube 41.

[0090] When the temperature drops, the movable end of the telescopic rod 32 is driven to reset, and the triangular hinge 435 contracts. Under the action of the elastic force of the coil spring 4311, it is easy to ensure that the triangular hinge 435 is in a spliced ​​state, thereby improving the safety of the ring network cabinet.

[0091] The present application also discloses a novel gas insulated ring main unit installation method, comprising the following steps:

[0092] S1 monitoring: the heat-sensitive gas in the induction block 31 detects the temperature in the cabinet 2;

[0093] S2 heat exchange: drive the telescopic rod 32 to open the triangular hinge 435, and the air pump 441 extracts the gas in the cabinet 2;

[0094] S3 cooling: the water gun 54 draws cold water, and the cold water cools the heat exchange tube 41;

[0095] S4 Reflux: The cooled gas opens the one-way valve 42 and refluxes into the cabinet 2.

[0096] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A new type of gas insulated ring main unit, characterized in that: include: Support cabinet (1); A cabinet body (2) is located inside the supporting cabinet (1); A detection component (3) is arranged in the cabinet (2) and is used to detect the temperature in the cabinet (2); The heat exchange component (4) comprises: The heat exchange tube (41) has two ends respectively connected to the bottom and the top of the cabinet (2), and is divided into an input end and an output end in a vertically upward direction; a one-way valve (42), arranged on the output end of the heat exchange tube (41); An opening and closing portion (43) is disposed on the heat exchange tube (41) and is used to open the input end of the heat exchange tube (41); A cooling component (5) is arranged on the heat exchange tube (41) and is used to cool the gas in the cabinet (2).

2. A new type of gas insulated ring main unit according to claim 1, characterized in that: The detection component (3) comprises: The induction block (31) is hollow inside and is fixedly mounted on the inner wall of the cabinet (2). The induction block (31) is filled with a heat-sensitive gas. A driving telescopic rod (32) is fixedly connected to the inner wall of the cabinet (2), and a rodless cavity of the driving telescopic rod (32) is connected to the induction block (31) via a guide pipe; The displacement sensor (33) is fixedly mounted on the movable end of the driving telescopic rod (32) and is used to output a displacement signal of the movable end of the driving telescopic rod (32).

3. A new type of gas insulated ring main unit according to claim 2, characterized in that: The opening and closing part (43) comprises: A driving gear (431) rotatably connected to the inner wall of the cabinet (2); A spur rack (432) is coaxially fixedly connected to the movable end of the driving telescopic rod (32) and meshes with the driving gear (431); A gear ring (433) rotatably connected to the inner wall of the cabinet (2) and meshing with the driving gear (431); A fixing ring (434) is fixedly mounted on the inner wall of the cabinet (2) and is located at the input end of the heat exchange tube (41); A plurality of triangular hinges (435) are provided, wherein the plurality of triangular hinges (435) are arranged around the axis of the fixing ring (434), and one end of the triangular hinge (435) is rotatably connected to the fixing ring (434); A plurality of bent rods (436) are provided, and the plurality of bent rods (436) correspond one-to-one to the plurality of triangular hinges (435), and two ends of the bent rod (436) are rotatably connected to the gear ring (433) and the triangular hinge (435) respectively; Wherein, in the initial state, the triangular hinge (435) is in a spliced ​​state.

4. A new type of gas insulated ring main unit according to claim 3, characterized in that: The heat exchange assembly (4) further comprises a driving unit (44), wherein the driving unit (44) comprises: An air pump (441) is disposed on the heat exchange tube (41); The controller (442) is fixedly mounted on the inner wall of the support cabinet (1), and the air pump (441) and the displacement sensor (33) are both electrically connected to the controller (442).

5. A new type of gas insulated ring main unit according to claim 3, characterized in that: A coil spring (4311) is provided between the driving gear (431) and the inner wall of the cabinet (2); the central end of the coil spring (4311) is fixedly connected to the inner wall of the cabinet (2), and the edge end is fixedly connected to the driving gear (431).

6. A new type of gas insulated ring main unit according to claim 1, characterized in that: The heat exchange tube (41) is in a spiral shape.

7. A new type of gas insulated ring main unit according to claim 4, characterized in that: The cooling component (5) comprises: A cooling box (51) is fixedly mounted on the inner wall of the supporting cabinet (1), and the heat exchange tube (41) is inserted into the cooling box (51); A water tank (52) is fixedly mounted on the supporting cabinet (1); A water pipe (53), both ends of which are respectively connected to the water tank (52) and the cooling box (51); A water gun (54), which is in communication with the water pipe (53) and is located in the cooling box (51); A water pump (55) is disposed on the water pipe (53) and is electrically connected to the controller (442).

8. A new type of gas insulated ring main unit according to claim 7, characterized in that: The cooling box (51) is connected to a collection box (511), and the collection box (511) is fixedly mounted on the supporting cabinet (1).

9. A method for installing a novel gas-insulated ring main unit, based on a novel gas-insulated ring main unit according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1 monitoring: the heat-sensitive gas in the induction block (31) detects the temperature in the cabinet (2); S2 heat exchange: driving the telescopic rod (32) to open the triangular hinge (435), and the air pump (441) extracts the gas in the cabinet (2); S3 cooling: a water gun (54) draws cold water, and the cold water cools the heat exchange tube (41); S4 Reflux: The cooled gas opens the one-way valve (42) and refluxes into the cabinet (2).

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