An environment-friendly heat dissipation structure for gas ring main unit

Abstract

The present invention relates to an environment-friendly heat dissipation structure for a gas ring main unit, belonging to the technical field of ring main units. It includes an outer cabinet body, in which a sealed cabinet and a relief cabinet are arranged. The sealed cabinet is used for installing electrical components, and the relief cabinet is used for accommodating expanded insulating gas. A cooling cabinet is arranged inside the outer cabinet body, and a refrigeration component is arranged on the cooling cabinet. The refrigeration component is used to reduce the temperature inside the cooling cabinet. An air-cooling component is arranged between the cooling cabinet and the sealed cabinet, and the air-cooling component is used to introduce the insulating gas into the cooling cabinet for cooling. A protection component is arranged inside the outer cabinet body, and the protection component is used to spray dry ice into the sealed cabinet. A plurality of through holes are respectively penetrated and opened on the side walls of the outer cabinet body, and a flow control component is arranged in the through holes. The flow control component is used to control the air flow in the through holes. A discharge pipe is communicated and arranged on the outer cabinet body. This application has the effect of facilitating heat dissipation of the ring main unit and reducing failures of electrical components inside the ring main unit.

Description

Technical Field

[0001] The present invention relates to the technical field of ring main units, and in particular to a heat dissipation structure for an environmentally friendly gas ring main unit. Background Art

[0002] As an important device in the power system, the ring main unit is mainly responsible for the distribution and conversion of electric power, and its stability and safety directly affect the normal operation of the power system. In order to enable the various electrical components assembled in the ring main unit to operate stably and ensure the insulation performance between the electrical components and the wiring, an environmentally friendly gas ring main unit is applied, and insulation protection is achieved by filling an insulating gas between the electrical components.

[0003] Since various electrical components inside the ring main unit generate a large amount of heat during operation, and the environmentally friendly gas ring main unit is in a sealed state, it is difficult to dissipate the heat inside the ring main unit. The existing ring main units generally adopt the method of cooling and dissipating heat on the outer wall of the cabinet to assist the electrical components inside the cabinet to dissipate heat. However, the temperature conduction speed of this heat dissipation method is slow, and it is difficult to quickly and effectively help the electrical components to dissipate heat, resulting in the electrical components inside the cabinet being prone to failure. Summary of the Invention

[0004] In order to facilitate the heat dissipation of the ring main unit and reduce the failure of the electrical components inside the ring main unit, the present application provides a heat dissipation structure for an environmentally friendly gas ring main unit.

[0005] The heat dissipation structure for an environmentally friendly gas ring main unit provided by the present application adopts the following technical solutions:

[0006] A heat dissipation structure for an environmentally friendly gas ring main unit includes an outer cabinet, a sealed cabinet and a relief cabinet are arranged inside the outer cabinet, the sealed cabinet is used for installing electrical components, the relief cabinet is used for accommodating the expanded insulating gas, a cooling cabinet is arranged inside the outer cabinet, a refrigeration component is arranged on the cooling cabinet, the refrigeration component is used for reducing the temperature inside the cooling cabinet, an air-cooling component is arranged between the cooling cabinet and the sealed cabinet, the air-cooling component is used for introducing the insulating gas into the cooling cabinet for cooling, a protection component is arranged inside the outer cabinet, the protection component is used for spraying dry ice into the sealed cabinet, a plurality of through holes are respectively formed through the side walls of the outer cabinet, a flow control component is arranged in the through holes, the flow control component is used for controlling the air flow in the through holes, and a discharge pipe is communicated with the outer cabinet.

[0007] By adopting the above technical solution, the electrical components are installed in the sealed cabinet, and insulating gas is injected into the sealed cabinet to achieve the effect of insulating protection. During the operation and heat generation of the electrical components, the refrigeration component reduces the temperature in the cooling cabinet. The air-cooling component guides the insulating gas in the sealed cabinet into the cooling cabinet for cooling. The cooled insulating gas is injected into the sealed cabinet again to cool the electronic devices, improving the heat dissipation speed and effect of the electronic devices, and reducing the occurrence of faults of the electrical components inside the ring main unit. Since the insulating gas expands after heating, when the air pressure in the sealed cabinet is lower than the air pressure threshold of the sealed cabinet, the flow control component enables natural ventilation in the through hole. When the air pressure in the sealed cabinet reaches the air pressure threshold of the sealed cabinet, the flow control component enables the air flow in the through hole to flow rapidly, accelerating the heat dissipation speed of the sealed cabinet, achieving the effect of facilitating the heat dissipation of the ring main unit. At the same time, the sealed cabinet is connected to the discharge cabinet, and the discharge cabinet accommodates the expanded insulating gas, reducing the situation that the sealed cabinet is squeezed and deformed by the expanded insulating gas. When the air pressure in the discharge cabinet is too high, the protection component sprays dry ice into the sealed cabinet for auxiliary cooling, and the flow control component cuts off the through hole, so that the carbon dioxide formed after the dry ice absorbs heat slowly discharges from the discharge pipe, reducing the situation that a large amount of carbon dioxide overflows instantaneously from the through hole and causes suffocation of personnel.

[0008] Preferably, the refrigeration component includes an equipment box, a compressor, a condenser, a capillary tube and an evaporator. The equipment box is located below the outer cabinet. A plurality of heat dissipation holes are formed through the side wall of the equipment box. The compressor, the condenser and the capillary tube are all located inside the equipment box. The evaporator is located inside the cooling cabinet. The outlet side of the compressor is communicated with the inlet side of the condenser. The outlet side of the condenser is communicated with the inlet side of the capillary tube. The outlet side of the capillary tube is communicated with the inlet side of the evaporator. The outlet side of the evaporator is communicated with the inlet side of the compressor.

[0009] By adopting the above technical solution, the refrigerant circulates in the compressor, the condenser, the capillary tube and the evaporator. The compressor compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure superheated vapor and sends it into the condenser. The high-temperature and high-pressure vapor gradually becomes a normal-temperature and high-pressure liquid refrigerant through heat dissipation and cooling in the condenser. The liquid refrigerant is throttled and depressurized through the capillary tube to become a low-temperature and low-pressure wet vapor. The low-temperature and low-pressure wet vapor enters the evaporator to absorb the heat inside the cooling cabinet and gasifies, reducing the temperature inside the cooling cabinet. The gasified refrigerant becomes a low-temperature and low-pressure gas again and is sucked into the compressor for a new round of cycle.

[0010] Preferably, the air-cooling assembly includes a plurality of insulating air pipes, an intake pipe, an outlet pipe and an air pump. The insulating air pipes are all located inside the cooling cabinet, and the cooling cabinet is located below the sealed cabinet. The intake pipe is communicatively connected between the bottom end of the sealed cabinet and one end of the insulating air pipe. The outlet pipe is communicatively connected between the output end of the air pump and the other end of the insulating air pipe. The outlet pipe is spirally wound around the outside of the sealed cabinet. The air pump is fixedly arranged on the top of the sealed cabinet, and the input end of the air pump is communicatively connected with the sealed cabinet. A cavity is formed inside the pipe wall of the outlet pipe. An input pipe is communicatively connected to the cavity near the top end of the outlet pipe. A circulating pump is communicatively connected to the input pipe. The input end of the circulating pump is communicatively connected to a storage tank. The storage tank is located inside the outer cabinet. A first branch pipe and a second branch pipe are communicatively connected to the cavity near the bottom end of the outlet pipe. A first valve is arranged on the first branch pipe. The first branch pipe is located inside the cooling cabinet. A second valve is arranged on the second branch pipe. The second branch pipe is located outside the cooling cabinet. Both the end of the first branch pipe away from the cavity and the end of the second branch pipe away from the cavity are communicatively connected to the storage tank.

[0011] By adopting the above technical solution, the air pump pumps the insulating gas in the sealed cabinet into the outlet pipe, and the insulating gas in the outlet pipe is sent into the insulating air pipe inside the cooling cabinet to cool the insulating gas. The cooled insulating gas is sent into the sealed cabinet again through the intake pipe to cool the heating electrical components. The circulating pump pumps the coolant in the storage tank into the cavity of the outlet pipe to reduce the temperature of the outlet pipe, achieving the effect of cooling the external environment of the sealed cabinet. When the temperature of the coolant does not exceed the set coolant threshold, the second valve is opened and the first valve is closed, and the coolant directly flows into the storage tank through the second branch pipe. When the temperature of the coolant exceeds the set coolant threshold, the first valve is opened and the second valve is closed, and the coolant flows through the first branch pipe inside the cooling cabinet to achieve the effect of cooling the coolant.

[0012] Preferably, the discharge cabinet is located above the sealed cabinet. A discharge pipe is communicatively connected between the bottom of the discharge cabinet and the top of the sealed cabinet. A discharge valve is arranged on the discharge pipe. A guide hole is formed through the top of the discharge cabinet. A guide rod is inserted into the guide hole. The guide rod is slidably connected to the guide hole. The outer wall of the guide rod fits with the inner wall of the guide hole. An end plate is fixedly arranged at the top end of the guide rod. The bottom of the end plate is used to abut against the top of the discharge cabinet. A discharge plate is fixedly arranged at the bottom end of the guide rod. The discharge plate is slidably arranged inside the discharge cabinet. A sealing layer is arranged between the outer wall of the discharge plate and the inner wall of the discharge cabinet. The sealing layer is used to seal the gap between the outer wall of the discharge plate and the inner wall of the discharge cabinet.

[0013] By adopting the above technical solution, when the air pressure in the sealed cabinet reaches the air pressure threshold of the sealed cabinet, the relief valve opens to conduct the sealed cabinet and the relief cabinet, and the expanded insulating gas in the sealed cabinet enters the relief cabinet. The insulating gas entering the relief cabinet pushes the relief plate upward. Since the sealing layer seals the gap between the outer wall of the relief plate and the inner wall of the relief cabinet, the leakage of the insulating gas is reduced.

[0014] Preferably, a magnetic part is arranged at the bottom of the relief plate, and a plurality of reinforcing springs are fixedly arranged at the top of the relief plate. Both the magnetic part and the reinforcing springs are used to apply a force to the relief plate to make it approach the relief pipe. A spring frame is jointly arranged at the top ends of the reinforcing springs. The spring frame is located in the relief cabinet. The guide rod penetrates through the spring frame, and the guide rod is slidably connected with the spring frame. A screw rod is rotatably arranged at the top end of the spring frame, and the screw rod is in threaded connection with the top wall of the relief cabinet.

[0015] By adopting the above technical solution, the magnetic part and the reinforcing springs apply a force to the relief plate to make it approach the relief pipe. When the insulating gas cools down, the relief plate presses the insulating gas in the relief cabinet into the sealed cabinet.

[0016] Preferably, the protection component includes a storage bottle, a ring pipe and a plurality of spray heads. The storage bottle is located in the cooling cabinet, and the ring pipe and the spray heads are both located in the outer cabinet body. The ring pipe is communicated with the spray heads. The spray heads face the sealed cabinet. A partition is slidably arranged in the storage bottle. One side of the partition is a buffer cavity, and the other side of the partition is a storage cavity. A buffer pipe penetrates through the side wall of the relief cabinet, and the buffer pipe is communicated with the buffer cavity. A first spray pipe and a second spray pipe are communicated between the storage cavity and the ring pipe. An electromagnetic valve is arranged on the first spray pipe. A switch frame is fixedly arranged at the top of the relief cabinet, and a switch seat is fixedly arranged on the switch frame. A switch groove is opened at the bottom of the switch seat, and a contact switch is fixedly arranged in the switch groove. The contact switch is used to control the electromagnetic valve. The contact switch is located directly above the end plate, and the top of the end plate is used to abut against the contact switch and the bottom wall of the switch seat. A diaphragm is arranged on the second spray pipe, and a puncture needle is fixedly arranged on the partition. The puncture needle is used to puncture the diaphragm.

[0017] By adopting the above technical solution, when the insulating gas in the relief cabinet pushes the relief plate to above the end of the buffer pipe, a part of the insulating gas in the relief cabinet enters the buffer cavity along the buffer pipe. The insulating gas in the buffer cavity pushes the partition to move. When the partition moves to the puncture needle to puncture the diaphragm, the dry ice stored in the storage cavity enters the ring pipe through the second spray pipe. The dry ice in the ring pipe is sprayed onto the sealed cabinet body through the spray heads for heat absorption. When the insulating gas in the relief cabinet pushes the relief plate to contact the end plate and the contact switch, the electromagnetic valve opens, and the dry ice stored in the storage cavity enters the ring pipe through the first spray pipe and the second spray pipe at the same time. The dry ice in the ring pipe is sprayed onto the sealed cabinet body through the spray heads for heat absorption.

[0018] Preferably, the flow control component includes an outer plate and an inner plate. Both the inner plate and the outer plate are fixedly arranged in the through hole. The side walls of the inner plate and the outer plate are both in contact with the inner wall of the through hole. A plurality of outer holes are formed in the outer plate, and the outer holes are circumferentially and arrayedly distributed centered on the central axis of the outer plate. A plurality of inner holes are formed in the inner plate, and the inner holes are circumferentially and arrayedly distributed centered on the central axis of the inner plate. The outer holes and the inner holes are arranged oppositely. A filter screen is arranged in the inner holes. A plurality of rotating shafts are rotatably arranged between the inner plate and the outer plate. The number of the outer holes and the number of the inner holes are both equal to the number of the rotating shafts. The rotating shafts are circumferentially and arrayedly distributed centered on the central axis of the outer plate, and the rotating shafts are circumferentially and arrayedly distributed centered on the central axis of the inner plate. First rotating arms, second rotating arms and third rotating arms are fixedly arranged on the side walls of the rotating shafts. First inner holes are formed in the first rotating arms, second inner holes are formed in the second rotating arms, and third inner holes are formed in the third rotating arms. The first inner holes, the second inner holes and the third inner holes are circumferentially and arrayedly distributed centered on the axis of the rotating shaft. The first inner holes, the second inner holes and the third inner holes are all used to be arranged oppositely to the outer holes, and the first inner holes, the second inner holes and the third inner holes are all used to be arranged oppositely to the inner holes. Air blowers are arranged in the first inner holes, and flexible membranes are arranged in the second inner holes.

[0019] By adopting the above technical solution, when the air pressure in the sealed cabinet is lower than the air pressure threshold of the sealed cabinet, the rotating shaft rotates to make the third inner hole located between the outer hole and the inner hole, so that natural ventilation is carried out in the through hole. When the air pressure in the sealed cabinet reaches the air pressure threshold of the sealed cabinet, the rotating shaft on one side of the outer cabinet rotates to make the first inner hole located between the outer hole and the inner hole, and the rotating shaft on the other side of the outer cabinet rotates to make the third inner hole located between the outer hole and the inner hole, so that the air blower in the first inner hole is arranged oppositely to the third inner hole. After the air blower is started, the air flow in the through hole flows rapidly, accelerating the heat dissipation speed of the sealed cabinet. When dry ice is sprayed into the sealed cabinet, all the rotating shafts on the side wall of the outer cabinet rotate to make the second inner hole located between the outer hole and the inner hole, and the flexible membrane in the second inner hole shields the outer hole, reducing the situation that a large amount of carbon dioxide overflows instantaneously from the outer hole, resulting in suffocation of personnel. At the same time, the gas in the outer cabinet squeezes the flexible membrane to deform, and the flexible membrane deformation accommodates the increased carbon dioxide gas in the outer cabinet, reducing the deformation of the outer cabinet caused by gas extrusion.

[0020] Preferably, a transmission shaft is fixedly arranged at one end of the rotating shaft away from the outer plate. One end of the transmission shaft away from the rotating shaft is rotatably connected to the inner plate. A small gear is sleeved on the transmission shaft and fixedly connected to the transmission shaft. A large gear is jointly arranged between the small gears. The small gears mesh with the large gear. The large gear is located between the outer plate and the inner plate. A driving shaft is fixedly arranged on one side of the large gear away from the outer plate. One end of the driving shaft away from the large gear is rotatably connected to the inner plate. A driving gear is sleeved on the driving shaft and fixedly connected to the driving shaft. A driving motor is fixedly arranged between the outer plate and the inner plate. A lead screw is fixedly arranged on the output shaft of the driving motor. A driving block is threadedly connected to the lead screw. A driving rack is fixedly arranged on the driving block. The driving rack meshes with the driving gear. A sliding rod is fixedly arranged between the outer plate and the inner plate. The sliding rod is perpendicular to the driving shaft and parallel to the lead screw. The sliding rod penetrates through the driving block.

[0021] By adopting the above technical solution, when the driving motor is started, it drives the lead screw to rotate. The rotation of the lead screw drives the driving block to move. The movement of the driving block drives the driving rack to move. The movement of the driving rack drives the driving gear to rotate. The rotation of the driving gear drives the driving shaft to rotate. The rotation of the driving shaft drives the large gear to rotate. The rotation of the large gear drives the small gear to rotate. The rotation of the small gear drives the transmission shaft to rotate. The rotation of the transmission shaft drives the rotating shaft to rotate, achieving the effect of synchronous rotation of the rotating shaft.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By providing an outer cabinet, a sealed cabinet, a discharge cabinet, a cooling cabinet, a refrigeration component, an air cooling component, a protection component, through holes, a flow control component, and a discharge pipe, the heat dissipation speed and effect of electronic devices are improved, the situation of faults of electrical components inside the ring main unit is reduced, and the effect of facilitating heat dissipation of the ring main unit is achieved;

[0024] 2. By providing an insulating air pipe, an intake pipe, an outlet pipe, an air pump, a cavity, an input pipe, a circulation pump, a storage tank, a first branch pipe, a second branch pipe, a first valve, and a second valve, the overheated electrical components in the sealed cabinet are cooled down;

[0025] 3. By providing a discharge pipe, a discharge valve, a guide hole, a guide rod, an end plate, a discharge plate, and a sealing layer, the expanded insulating gas in the sealed cabinet is accommodated. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of a heat dissipation structure of an environmentally friendly gas ring main unit in an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram showing the positional relationship between the outlet pipe and the sealed cabinet in an embodiment of the present application.

[0028] Figure 3 is Figure 2 an enlarged view of part A in

[0029] Figure 4 a cross-sectional view showing the positional relationship between the trachea and the cavity in an embodiment of the present application.

[0030] Figure 5 a schematic diagram showing the positional relationship between the compressor and the evaporator in an embodiment of the present application.

[0031] Figure 6 a cross-sectional view showing the connection relationship between the relief plate and the relief cabinet in an embodiment of the present application.

[0032] Figure 7 a cross-sectional view showing the positional relationship between the buffer chamber and the storage chamber in an embodiment of the present application.

[0033] Figure 8 a schematic diagram showing the positional relationship between the outer plate and the outer hole in an embodiment of the present application.

[0034] Figure 9 a schematic diagram showing the positional relationship between the inner plate and the inner hole in an embodiment of the present application.

[0035] Figure 10 a schematic diagram showing the positional relationship between the fan and the flexible membrane in an embodiment of the present application.

[0036] Figure 11 a cross-sectional view showing the connection relationship between the drive shaft and the rotating shaft in an embodiment of the present application.

[0037] Figure 12 a schematic diagram showing the connection relationship between the drive gear and the drive rack in an embodiment of the present application.

[0038] Description of reference numerals: 1. Outer cabinet; 11. Through hole; 12. Relief pipe; 13. Sealed cabinet; 14. Cooling cabinet; 2. Drainage cabinet; 21. Drainage pipe; 211. Drainage valve; 22. Guide rod; 221. Guide hole; 222. End plate; 23. Drainage plate; 231. Sealing layer; 24. Magnetic part; 25. Reinforcing spring; 251. Spring frame; 252. Screw; 3. Refrigeration component; 31. Equipment box; 311. Heat dissipation hole; 32. Compressor; 33. Condenser; 34. Capillary tube; 35. Evaporator; 4. Air-cooling component; 41. Insulated air pipe; 42. Inlet pipe; 43. Outlet pipe; 44. Air pump; 5. Cavity; 51. Storage tank; 52. Input pipe; 53. First branch pipe; 531. First valve; 54. Second branch pipe; 541. Second valve; 55. Circulation pump; 6. Protection component; 61. Storage bottle; 611. Partition board; 612. Buffer cavity; 613. Storage cavity; 62. Ring pipe; 63. Sprinkler head; 64. Buffer pipe; 65. First spray pipe; 651. Solenoid valve; 652. Contact switch; 653. Switch seat; 654. Switch groove; 655. Switch frame; 66. Second spray pipe; 661. Diaphragm; 662. Needle; 7. Flow control component; 71. Outer side plate; 711. Outer side hole; 72. Inner side plate; 721. Inner side hole; 73. Fan; 74. Flexible film; 75. Filter screen; 8. Rotating shaft; 81. First rotating arm; 811. First inner hole; 82. Second rotating arm; 821. Second inner hole; 83. Third rotating arm; 831. Third inner hole; 84. Transmission shaft; 841. Small gear; 842. Large gear; 9. Driving shaft; 91. Driving gear; 92. Driving rack; 93. Driving block; 94. Lead screw; 95. Driving motor; 96. Slide bar. Detailed implementation manners

[0039] The following further describes the present application in detail in conjunction with the attached Figure 1-12 drawings.

[0040] An embodiment of the present application discloses a heat dissipation structure for an environment-friendly gas ring main unit. Refer to Figures 1 to 12, including an outer cabinet body 1, a sealed cabinet 13 is installed inside the outer cabinet body 1, a barometer for detecting pressure, a thermometer for detecting temperature and electrical components are installed inside the sealed cabinet 13, and insulating gas is injected into the sealed cabinet 13 to achieve the effect of insulation protection. A discharge cabinet 2 is installed at the top of the sealed cabinet 13, the discharge cabinet 2 is located inside the outer cabinet body 1, and the discharge cabinet 2 is used to accommodate the expanded insulating gas. A cooling cabinet 14 is installed at the bottom of the sealed cabinet 13, and the cooling cabinet 14 is located inside the outer cabinet body 1. An air-cooling component 4 is installed between the cooling cabinet 14 and the sealed cabinet 13, and the air-cooling component 4 is used to introduce the insulating gas into the cooling cabinet 14 for cooling. A refrigeration component 3 is arranged on the cooling cabinet 14, and the refrigeration component 3 reduces the temperature inside the cooling cabinet 14. A protection component 6 is configured inside the outer cabinet body 1, and the protection component 6 is used to spray dry ice into the sealed cabinet 13. A plurality of through holes 11 are penetrated and opened on the side walls of the outer cabinet body 1, and a discharge pipe 12 is communicated and arranged on the outer cabinet body 1. A flow control component 7 is installed inside the through holes 11, and the flow control component 7 is used to control the air flow inside the through holes 11. During the operation and heat generation of the electrical components, the air-cooling component 4 introduces the insulating gas inside the sealed cabinet 13 into the cooling cabinet 14 for cooling, and the cooled insulating gas is injected into the sealed cabinet 13 again to cool the electronic devices, improving the heat dissipation speed and effect of the electronic devices and reducing the failure of the electrical components inside the ring main unit. Since the insulating gas expands after heating up, the air pressure inside the sealed cabinet 13 increases. When the air pressure inside the sealed cabinet 13 is lower than the air pressure threshold of the sealed cabinet 13, the flow control component 7 enables natural ventilation and heat dissipation inside the through holes 11. When the air pressure inside the sealed cabinet 13 reaches the air pressure threshold of the sealed cabinet 13, the flow control component 7 enables the air flow inside the through holes 11 to flow rapidly, accelerating the heat dissipation speed of the sealed cabinet 13, achieving the effect of facilitating the heat dissipation of the ring main unit, and at the same time conducting the sealed cabinet 13 and the discharge cabinet 2, and the discharge cabinet 2 accommodates the expanded insulating gas, reducing the situation that the sealed cabinet 13 is extruded and deformed by the expanded insulating gas. When the air pressure inside the discharge cabinet 2 is too high, the protection component 6 sprays dry ice into the sealed cabinet 13 for auxiliary cooling, and the flow control component 7 cuts off the through holes 11, enabling the carbon dioxide formed after the dry ice absorbs heat to slowly discharge from the discharge pipe 12, reducing the situation that a large amount of carbon dioxide overflows instantaneously from the through holes 11 and causing suffocation of personnel.

[0041] Refer to Figures 1 to 5, the refrigeration component 3 includes an equipment box 31, a compressor 32, a condenser 33, a capillary tube 34 and an evaporator 35, and the refrigerant circulates among the compressor 32, the condenser 33, the capillary tube 34 and the evaporator 35. The equipment box 31 is installed at the bottom of the outer cabinet 1, and a plurality of heat dissipation holes 311 are penetrated and opened on the side wall of the equipment box 31. The compressor 32, the condenser 33 and the capillary tube 34 are all located inside the equipment box 31, and the evaporator 35 is located inside the cooling cabinet 14. The outlet side of the compressor 32 is communicated with the inlet side of the condenser 33, the outlet side of the condenser 33 is communicated with the inlet side of the capillary tube 34, the outlet side of the capillary tube 34 is communicated with the inlet side of the evaporator 35, and the outlet side of the evaporator 35 is communicated with the inlet side of the compressor 32. The compressor 32 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure superheated vapor and sends it into the condenser 33. The high-temperature and high-pressure vapor gradually becomes a normal-temperature and high-pressure liquid refrigerant through heat dissipation and cooling in the condenser 33. The liquid refrigerant passes through the capillary tube 34 to throttle and depressurize and becomes a low-temperature and low-pressure wet vapor. The low-temperature and low-pressure wet vapor enters the evaporator 35 to absorb the internal heat of the cooling cabinet 14 and vaporize, so that the temperature inside the cooling cabinet 14 is reduced. The vaporized refrigerant becomes a low-temperature and low-pressure gas again and is sucked into the compressor 32 for a new round of cycle.

[0042] Refer to Figures 2 to 4, the air-cooling component 4 includes a plurality of insulating air pipes 41, an intake pipe 42, an exhaust pipe 43 and an air pump 44. The insulating air pipes 41 are all located inside the cooling cabinet 14. The intake pipe 42 is communicatively connected between the bottom end of the sealed cabinet 13 and one end of the insulating air pipe 41. The exhaust pipe 43 is communicatively connected between the output end of the air pump 44 and the other end of the insulating air pipe 41. The air pump 44 is installed on the top of the sealed cabinet 13, and the input end of the air pump 44 is communicatively connected with the sealed cabinet 13. The exhaust pipe 43 is spirally wound around the outside of the sealed cabinet 13, and a cavity 5 is formed inside the pipe wall of the exhaust pipe 43. An input pipe 52 is communicatively connected to the cavity 5 near the top end of the exhaust pipe 43. A circulation pump 55 is communicatively connected to the input pipe 52, and a storage tank 51 is communicatively connected to the input end of the circulation pump 55. The storage tank 51 is located inside the outer cabinet 1. A temperature sensor is installed inside the storage tank 51. A first branch pipe 53 and a second branch pipe 54 are communicatively connected to the cavity 5 near the bottom end of the exhaust pipe 43. One end of the first branch pipe 53 away from the cavity 5 and one end of the second branch pipe 54 away from the cavity 5 are both communicatively connected to the storage tank 51. A first valve 531 is installed on the first branch pipe 53, and the first branch pipe 53 is located inside the cooling cabinet 14; a second valve 541 is installed on the second branch pipe 54, and the second branch pipe 54 is located outside the cooling cabinet 14. The air pump 44 pumps the insulating gas in the sealed cabinet 13 into the exhaust pipe 43, and the insulating gas in the exhaust pipe 43 is sent into the insulating air pipe 41 inside the cooling cabinet 14 to cool the insulating gas. The cooled insulating gas is sent into the sealed cabinet 13 again through the intake pipe 42 to cool the heating electrical components. The circulation pump 55 pumps the coolant in the storage tank 51 into the cavity 5 of the exhaust pipe 43 to reduce the temperature of the exhaust pipe 43, achieving the effect of cooling the external environment of the sealed cabinet 13. When the temperature of the coolant does not exceed the set coolant threshold, the second valve 541 is opened and the first valve 531 is closed, and the coolant directly flows into the storage tank 51 through the second branch pipe 54; when the temperature of the coolant exceeds the set coolant threshold, the first valve 531 is opened and the second valve 541 is closed, and the coolant flows through the first branch pipe 53 inside the cooling cabinet 14 to achieve the effect of cooling the coolant.

[0043] Refer to Figures 2 to 6, a discharge pipe 21 is communicatively arranged between the bottom of the discharge cabinet 2 and the top of the sealing cabinet 13, and a discharge valve 211 is installed on the discharge pipe 21. A guide hole 221 is formed through the top of the discharge cabinet 2, a guide rod 22 is inserted into the guide hole 221, the guide rod 22 is slidably connected to the guide hole 221, and the outer wall of the guide rod 22 is in mutual fit with the inner wall of the guide hole 221. A end plate 222 is installed at the top of the guide rod 22, and the bottom of the end plate 222 is used to abut against the top of the discharge cabinet 2. A discharge plate 23 is installed at the bottom of the guide rod 22, and the discharge plate 23 is slidably arranged in the discharge cabinet 2. A sealing layer 231 made of rubber is installed between the outer wall of the discharge plate 23 and the inner wall of the discharge cabinet 2, and the sealing layer 231 is used to seal the gap between the outer wall of the discharge plate 23 and the inner wall of the discharge cabinet 2. A magnetic attraction member 24 is installed at the bottom of the discharge plate 23, and a plurality of reinforcing springs 25 are installed at the top of the discharge plate 23. Both the magnetic attraction member 24 and the reinforcing springs 25 apply a force to the discharge plate 23 to move it closer to the discharge pipe 21. The tops of the reinforcing springs 25 are commonly installed with a spring frame 251, and the spring frame 251 is located in the discharge cabinet 2. The guide rod 22 penetrates through the spring frame 251, and the guide rod 22 is slidably connected to the spring frame 251. A screw rod 252 is rotatably arranged at the top of the spring frame 251, and the screw rod 252 is threadedly connected to the top wall of the discharge cabinet 2. When the air pressure in the sealing cabinet 13 reaches the air pressure threshold value of the sealing cabinet 13, the discharge valve 211 opens to conduct the sealing cabinet 13 and the discharge cabinet 2, and the expanded insulating gas in the sealing cabinet 13 enters the discharge cabinet 2. The insulating gas entering the discharge cabinet 2 pushes the discharge plate 23 to rise. Since the sealing layer 231 seals the gap between the outer wall of the discharge plate 23 and the inner wall of the discharge cabinet 2, the leakage of the insulating gas is reduced. When the insulating gas cools down, the discharge plate 23 presses the insulating gas in the discharge cabinet 2 into the sealing cabinet 13.

[0044] Refer to Figures 2 to 7, the protection component 6 includes a storage bottle 61, a ring pipe 62 and a plurality of nozzles 63. The storage bottle 61 is located inside the cooling cabinet 14, and the ring pipe 62 and the nozzles 63 are both located inside the outer cabinet body 1. The ring pipe 62 is communicated with the nozzles 63, and the nozzles 63 are oriented towards the sealed cabinet 13. A partition 611 is slidably arranged inside the storage bottle 61. One side of the partition 611 is a buffer cavity 612, and the other side of the partition 611 is a storage cavity 613. A buffer pipe 64 is penetratively arranged on the side wall of the discharge cabinet 2, and the buffer pipe 64 is communicated with the buffer cavity 612. A first spray pipe 65 and a second spray pipe 66 are communicated between the storage cavity 613 and the ring pipe 62. An electromagnetic valve 651 is installed on the first spray pipe 65, and a diaphragm 661 is installed on the second spray pipe 66. A puncture needle 662 is installed on the partition 611, and the puncture needle 662 is used for puncturing the diaphragm 661. A switch holder 655 is installed on the top of the discharge cabinet 2, a switch base 653 is installed on the switch holder 655, and a switch groove 654 is formed at the bottom of the switch base 653. A contact switch 652 is installed inside the switch groove 654, and the contact switch 652 is used for controlling the electromagnetic valve 651. The contact switch 652 is located directly above the end plate 222, and the top of the end plate 222 is used for abutting against the contact switch 652 and the bottom wall of the switch base 653. When the insulating gas inside the discharge cabinet 2 pushes the discharge plate 23 to above the end of the buffer pipe 64, a part of the insulating gas inside the discharge cabinet 2 enters the buffer cavity 612 along the buffer pipe 64, and the insulating gas inside the buffer cavity 612 pushes the partition 611 to move. When the partition 611 moves until the puncture needle 662 punctures the diaphragm 661, the dry ice stored in the storage cavity 613 enters the ring pipe 62 through the second spray pipe 66, and the dry ice inside the ring pipe 62 is sprayed onto the sealed cabinet 13 through the nozzles 63 for heat absorption. When the insulating gas inside the discharge cabinet 2 pushes the discharge plate 23 to contact the contact switch 652 with the end plate 222, the electromagnetic valve 651 is opened, and the dry ice stored in the storage cavity 613 simultaneously enters the ring pipe 62 through the first spray pipe 65 and the second spray pipe 66, and the dry ice inside the ring pipe 62 is sprayed onto the sealed cabinet 13 through the nozzles 63 for heat absorption.

[0045] Refer to Figures 1 to 11, the flow control component 7 includes an outer plate 71 and an inner plate 72. Both the inner plate 72 and the outer plate 71 are installed in the through hole 11, and the side walls of the inner plate 72 and the outer plate 71 are in mutual contact with the inner wall of the through hole 11. A number of outer holes 711 are provided on the outer plate 71, and the outer holes 711 are distributed in a circumferential array centered on the central axis of the outer plate 71; a number of inner holes 721 are provided on the inner plate 72, and the inner holes 721 are distributed in a circumferential array centered on the central axis of the inner plate 72. The number of the outer holes 711 is the same as the number of the inner holes 721, the outer holes 711 and the inner holes 721 are arranged oppositely, and a filter screen 75 is covered on the inner holes 721 to prevent dust from entering the outer cabinet 1. A number of rotating shafts 8 are rotatably arranged between the inner plate 72 and the outer plate 71, and the number of the outer holes 711 and the number of the inner holes 721 are both equal to the number of the rotating shafts 8. The rotating shafts 8 are distributed in a circumferential array centered on the central axis of the outer plate 71; the rotating shafts 8 are distributed in a circumferential array centered on the central axis of the inner plate 72. A first rotating arm 81, a second rotating arm 82 and a third rotating arm 83 are installed on the side wall of the rotating shaft 8. A first inner hole 811 is provided on the first rotating arm 81, a second inner hole 821 is provided on the second rotating arm 82, and a third inner hole 831 is provided on the third rotating arm 83. The first inner hole 811, the second inner hole 821 and the third inner hole 831 are distributed in a circumferential array centered on the axis of the rotating shaft 8. The first inner hole 811, the second inner hole 821 and the third inner hole 831 are all used to be arranged oppositely to the outer holes 711, and the first inner hole 811, the second inner hole 821 and the third inner hole 831 are all used to be arranged oppositely to the inner holes 721. A fan 73 is installed in the first inner hole 811, and a flexible film 74 is installed in the second inner hole 821. When the air pressure in the sealed cabinet 13 is lower than the air pressure threshold of the sealed cabinet 13, the rotating shaft 8 rotates to make the third inner hole 831 located between the outer hole 711 and the inner hole 721, so that natural ventilation is carried out in the through hole 11. When the air pressure in the sealed cabinet 13 reaches the air pressure threshold of the sealed cabinet 13, the rotating shaft 8 on one side of the outer cabinet 1 rotates to make the first inner hole 811 located between the outer hole 711 and the inner hole 721, and the rotating shaft 8 on the other side of the outer cabinet 1 rotates to make the third inner hole 831 located between the outer hole 711 and the inner hole 721. Thus, the fan 73 in the first inner hole 811 is arranged oppositely to the third inner hole 831. After the fan 73 is started, the air flow in the through hole 11 flows rapidly, and the heat dissipation speed of the sealed cabinet 13 is accelerated. When dry ice is sprayed into the sealed cabinet 13, all the rotating shafts 8 in the through hole 11 rotate to make the second inner hole 821 located between the outer hole 711 and the inner hole 721, and the flexible film 74 in the second inner hole 821 shields the outer hole 711, reducing the situation that a large amount of carbon dioxide overflows from the outer hole 711 instantaneously and causes suffocation of personnel. At the same time, the gas in the outer cabinet 1 squeezes the flexible film 74 to deform, and the flexible film 74 deforms to accommodate the increased carbon dioxide gas in the outer cabinet 1, reducing the situation that the outer cabinet 1 is deformed by the gas extrusion.

[0046] Refer to Figure 11 and Figure 12, a transmission shaft 84 is installed at one end of the rotating shaft 8 away from the outer side plate 71, and one end of the transmission shaft 84 away from the rotating shaft 8 is rotatably connected to the inner side plate 72. A small gear 841 is sleeved on the transmission shaft 84, and the small gear 841 is fixedly connected to the transmission shaft 84. A large gear 842 is jointly arranged among the small gears 841. The large gear 842 is located between the outer side plate 71 and the inner side plate 72, and the small gear 841 meshes with the large gear 842. A driving shaft 9 is installed on one side of the large gear 842 away from the outer side plate 71, and one end of the driving shaft 9 away from the large gear 842 is rotatably connected to the inner side plate 72. A driving gear 91 is sleeved on the driving shaft 9, and the driving gear 91 is fixedly connected to the driving shaft 9. A driving motor 95 is installed between the outer side plate 71 and the inner side plate 72. A lead screw 94 is installed on the output shaft of the driving motor 95, and a driving block 93 is threadedly connected to the lead screw 94. A driving rack 92 is installed on the driving block 93, and the driving rack 92 meshes with the driving gear 91. A slide bar 96 is fixedly installed between the outer side plate 71 and the inner side plate 72, and the slide bar 96 penetrates through the driving block 93. The driving shaft 9, the transmission shaft 84 and the rotating shaft 8 within the same through hole 11 are all parallel to each other. The driving shaft 9, the transmission shaft 84 and the rotating shaft 8 within the same through hole 11 are all perpendicular to the slide bar 96. The slide bar 96 and the lead screw 94 within the same through hole 11 are parallel to each other. When the driving motor 95 is started, the lead screw 94 rotates. The rotation of the lead screw 94 drives the driving block 93 to move. The movement of the driving block 93 drives the driving rack 92 to move. The movement of the driving rack 92 drives the driving gear 91 to rotate. The rotation of the driving gear 91 drives the driving shaft 9 to rotate. The rotation of the driving shaft 9 drives the large gear 842 to rotate. The rotation of the large gear 842 drives the small gear 841 to rotate. The rotation of the small gear 841 drives the transmission shaft 84 to rotate. The rotation of the transmission shaft 84 drives the rotating shaft 8 to rotate, achieving the effect of synchronous rotation of the rotating shaft 8.

[0047] The implementation principle of a heat dissipation structure for an environmentally friendly gas ring main unit in an embodiment of the present application is as follows: During the operation and heat generation of electrical components, the air-cooling component 4 introduces the insulating gas in the sealed cabinet 13 into the cooling cabinet 14 for cooling. The cooled insulating gas is then injected back into the sealed cabinet 13 to cool the electronic devices, improving the heat dissipation speed and effect of the electronic devices and reducing the occurrence of faults in the internal electrical components of the ring main unit. Since the insulating gas expands after heating up, the air pressure in the sealed cabinet 13 increases. When the air pressure in the sealed cabinet 13 is lower than the air pressure threshold of the sealed cabinet 13, the flow control component 7 enables natural ventilation and heat dissipation in the through hole 11. When the air pressure in the sealed cabinet 13 reaches the air pressure threshold of the sealed cabinet 13, the flow control component 7 makes the air flow in the through hole 11 flow rapidly, accelerating the heat dissipation speed of the sealed cabinet 13, achieving the effect of facilitating heat dissipation of the ring main unit. At the same time, the sealed cabinet 13 is connected to the discharge cabinet 2, and the discharge cabinet 2 accommodates the expanded insulating gas, reducing the situation where the sealed cabinet 13 is squeezed and deformed by the expanded insulating gas. When the air pressure in the discharge cabinet 2 is too high, the protection component 6 sprays dry ice into the sealed cabinet 13 for auxiliary cooling, and the flow control component 7 cuts off the through hole 11, so that the carbon dioxide formed after the dry ice absorbs heat slowly discharges from the discharge pipe 12, reducing the situation where a large amount of carbon dioxide overflows instantaneously from the through hole 11 and causing suffocation of the operator.

[0048] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. 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. An environment-friendly heat dissipation structure for a gas ring main unit, comprising an outer cabinet body, wherein a sealed cabinet and a discharge cabinet are arranged inside the outer cabinet body, the sealed cabinet is used for installing electrical components, and the discharge cabinet is used for accommodating the expanded insulating gas, and is characterized in that: A cooling cabinet is arranged inside the outer cabinet body. A refrigeration component is arranged on the cooling cabinet, and the refrigeration component is used to reduce the temperature inside the cooling cabinet. An air-cooling component is arranged between the cooling cabinet and the sealed cabinet, and the air-cooling component is used to introduce an insulating gas into the cooling cabinet for cooling. A protection component is arranged inside the outer cabinet body, and the protection component is used to spray dry ice towards the sealed cabinet. A plurality of through holes are penetrated and opened on the side walls of the outer cabinet body, and a flow control component is arranged in the through holes, and the flow control component is used to control the air flow in the through holes. A discharge pipe is communicated and arranged on the outer cabinet body; The refrigeration component includes an equipment box, a compressor, a condenser, a capillary tube and an evaporator. The equipment box is located below the outer cabinet body. A plurality of heat dissipation holes are penetrated and opened on the side wall of the equipment box. The compressor, the condenser and the capillary tube are all located inside the equipment box. The evaporator is located inside the cooling cabinet. The outlet side of the compressor is communicated with the inlet side of the condenser. The outlet side of the condenser is communicated with the inlet side of the capillary tube. The outlet side of the capillary tube is communicated with the inlet side of the evaporator. The outlet side of the evaporator is communicated with the inlet side of the compressor; The air-cooling component includes a plurality of insulating air pipes, an inlet pipe, an outlet pipe and an air pump. The insulating air pipes are all located inside the cooling cabinet. The cooling cabinet is located below the sealed cabinet. The inlet pipe is communicated and arranged between the bottom end of the sealed cabinet and one end of the insulating air pipe. The outlet pipe is communicated and arranged between the output end of the air pump and the other end of the insulating air pipe. The outlet pipe is spirally wound around the outside of the sealed cabinet. The air pump is fixedly arranged on the top of the sealed cabinet. The input end of the air pump is communicated with the sealed cabinet. A cavity is opened inside the pipe wall of the outlet pipe. An input pipe is communicated and arranged at a position close to the top end of the outlet pipe. A circulation pump is communicated and arranged on the input pipe. The input end of the circulation pump is communicated and arranged with a storage tank. The storage tank is located inside the outer cabinet body. A first branch pipe and a second branch pipe are communicated and arranged at a position close to the bottom end of the outlet pipe. A first valve is arranged on the first branch pipe. The first branch pipe is located inside the cooling cabinet. A second valve is arranged on the second branch pipe. The second branch pipe is located outside the cooling cabinet. One end of the first branch pipe far away from the cavity and one end of the second branch pipe far away from the cavity are both communicated with the storage tank; The protection component includes a storage bottle, a ring pipe and a plurality of nozzles. The storage bottle is located inside the cooling cabinet. The ring pipe and the nozzles are all located inside the outer cabinet body. The ring pipe is communicated with the nozzles. The nozzles face the sealed cabinet. A partition is slidably arranged inside the storage bottle. One side of the partition is a buffer cavity, and the other side of the partition is a storage cavity. A buffer pipe is penetrated and arranged on the side wall of the discharge cabinet, and the buffer pipe is communicated with the buffer cavity. A first spray pipe and a second spray pipe are communicated and arranged between the storage cavity and the ring pipe. A solenoid valve is arranged on the first spray pipe. A diaphragm is arranged on the second spray pipe. A thorn needle is fixedly arranged on the partition, and the thorn needle is used to pierce the diaphragm.

2. The heat dissipation structure of an environmentally friendly gas ring main unit according to claim 1, wherein: The discharge cabinet is located above the sealed cabinet. A discharge pipe is connected and arranged between the bottom of the discharge cabinet and the top of the sealed cabinet. A discharge valve is arranged on the discharge pipe. A guide hole is penetrated and opened at the top of the discharge cabinet. A guide rod is inserted into the guide hole. The guide rod is slidably connected to the guide hole. The outer wall of the guide rod is in mutual fit with the inner wall of the guide hole. An end plate is fixedly arranged at the top end of the guide rod. The bottom of the end plate is used to abut against the top of the discharge cabinet. A discharge plate is fixedly arranged at the bottom end of the guide rod. The discharge plate is slidably arranged in the discharge cabinet. A sealing layer is arranged between the outer wall of the discharge plate and the inner wall of the discharge cabinet. The sealing layer is used to seal the gap between the outer wall of the discharge plate and the inner wall of the discharge cabinet.

3. The heat dissipation structure of an environmentally friendly gas ring main unit according to claim 2, characterized in that: A magnetic attracting member is arranged at the bottom of the discharge plate. A plurality of reinforcing springs are fixedly arranged at the top of the discharge plate. Both the magnetic attracting member and the reinforcing springs are used to apply a force to the discharge plate to make it close to the discharge pipe. A spring frame is jointly arranged at the top ends of the reinforcing springs. The spring frame is located in the discharge cabinet. The guide rod penetrates through the spring frame. The guide rod is slidably connected to the spring frame. A screw rod is rotatably arranged at the top end of the spring frame. The screw rod is threadedly connected to the top wall of the discharge cabinet.

4. An environmentally friendly gas ring main unit heat dissipation structure according to claim 2, characterized in that: A switch frame is fixedly arranged at the top of the discharge cabinet. A switch seat is fixedly arranged on the switch frame. A switch groove is opened at the bottom of the switch seat. A contact switch is fixedly arranged in the switch groove. The contact switch is used to control the solenoid valve. The contact switch is located directly above the end plate. The top of the end plate is used to abut against the contact switch and the bottom wall of the switch seat.

5. An environmentally friendly gas ring main unit heat dissipation structure according to claim 1, characterized in that: The flow control component includes an outer plate and an inner plate. Both the inner plate and the outer plate are fixedly arranged in the through hole. The side wall of the inner plate and the side wall of the outer plate are in mutual fit with the inner wall of the through hole. A plurality of outer holes are opened on the outer plate. The outer holes are circumferentially and arrayedly distributed with the central axis of the outer plate as the center. A plurality of inner holes are opened on the inner plate. The inner holes are circumferentially and arrayedly distributed with the central axis of the inner plate as the center. The outer holes and the inner holes are arranged oppositely. Filter screens are arranged in the inner holes. A plurality of rotating shafts are rotatably arranged between the inner plate and the outer plate. The number of the outer holes and the number of the inner holes are both equal to the number of the rotating shafts. The rotating shafts are circumferentially and arrayedly distributed with the central axis of the outer plate as the center. The rotating shafts are circumferentially and arrayedly distributed with the central axis of the inner plate as the center. First rotating arms, second rotating arms and third rotating arms are fixedly arranged on the side walls of the rotating shafts. First inner holes are opened on the first rotating arms. Second inner holes are opened on the second rotating arms. Third inner holes are opened on the third rotating arms. The first inner holes, the second inner holes and the third inner holes are circumferentially and arrayedly distributed with the axis of the rotating shaft as the center. The first inner holes, the second inner holes and the third inner holes are all used to be arranged oppositely to the outer holes. The first inner holes, the second inner holes and the third inner holes are all used to be arranged oppositely to the inner holes. Air blowers are arranged in the first inner holes. Flexible membranes are arranged in the second inner holes.

6. The heat dissipation structure of an environmentally friendly gas ring main unit according to claim 5, characterized in that: One end of the rotating shaft away from the outer plate is fixedly provided with a transmission shaft. One end of the transmission shaft away from the rotating shaft is rotatably connected to the inner plate. A small gear is sleeved on the transmission shaft, and the small gear is fixedly connected to the transmission shaft. A large gear is jointly arranged between the small gears, and the small gears mesh with the large gear. The large gear is located between the outer plate and the inner plate. One side of the large gear away from the outer plate is fixedly provided with a driving shaft. One end of the driving shaft away from the large gear is rotatably connected to the inner plate. A driving gear is sleeved on the driving shaft, and the driving gear is fixedly connected to the driving shaft. A driving motor is fixedly arranged between the outer plate and the inner plate. A lead screw is fixedly arranged on the output shaft of the driving motor. A driving block is threadedly connected to the lead screw. A driving rack is fixedly arranged on the driving block, and the driving rack meshes with the driving gear. A slide bar is fixedly arranged between the outer plate and the inner plate. The slide bar is perpendicular to the driving shaft and parallel to the lead screw. The slide bar penetrates through the driving block.

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