Dehumidifying and cooling device of outdoor power ring main unit

Abstract

The invention relates to the technical field of power ring main units, and discloses a dehumidifying and cooling device of an outdoor power ring main unit, which comprises a cabinet body, a plurality of high-voltage switch devices and a box body, the plurality of high-voltage switch devices are respectively arranged in the cabinet body, the box body is arranged above the cabinet body, the joint of the box body and the cabinet body is fixedly connected with a partition plate, and the partition plate is arranged above the cabinet body. A PLC control cabinet is fixedly connected to the inner wall of the cabinet body, a plurality of temperature and humidity sensors are electrically connected to one side of the PLC control cabinet, and the circulating heat exchange mechanism is arranged on the upper surface of the partition plate and electrically connected with the PLC control cabinet. According to the dehumidifying and cooling device of the outdoor power ring main unit, the sensor can be reinforced, the interference of the external environment is reduced, the cooling efficiency is improved, the cooling effect of the ring main unit is ensured, the service life of the dehumidifying material can be prolonged, and the use cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power ring main units, and particularly to a dehumidifying and cooling device for outdoor power ring main units. Background Art

[0002] A power ring main unit is a set of high-voltage switchgear installed in a metal or non-metal insulated cabinet or made into a prefabricated sectionalized ring main power supply unit. It is an important electrical device used for power distribution and control in the power system. Usually installed at key nodes of the distribution network, it is used to achieve functions such as power distribution, transfer supply, and protection.

[0003] The patent document with the publication number CN117060243A discloses a dehumidifying and cooling device for outdoor power ring main units, belonging to the field of ring main units. A dehumidifying and cooling device for outdoor power ring main units includes a cabinet body. A rain shelter is fixedly connected to the top of the cabinet body. An auxiliary cooling component is arranged on the top of the cabinet body. The auxiliary cooling component includes a wind cup. A rotating rod is fixedly connected to the wind cup. The bottom end of the rotating rod sequentially penetrates through the rain shelter and the cabinet body and extends into the interior of the cabinet body. A heat dissipation wind member is fixedly connected to the outer surface of the end of the rotating rod extending into the interior of the cabinet body. A first bevel gear is sleeved on the outer surface of the rotating rod and located above the heat dissipation wind member. By the above method, the present invention can intermittently dissipate heat from the electrical components inside the cabinet body through a built-in fan, thereby extending the service life of the built-in fan to a certain extent, eliminating the need for multiple replacements, and facilitating the use of staff.

[0004] However, the above device has certain defects when in use:

[0005] Currently, the cooling and dehumidifying device uses a conventional air-cooled structure for cooling treatment, with low efficiency and requiring a certain cycle time to achieve the effect. Since the ring main unit is installed outdoors, the temperature sensor is easily affected by the external environment. If it is damaged or attached with impurities and dust, resulting in insensitivity, it cannot be detected in time to ensure the use effect, thus affecting the subsequent cooling effect of the ring main unit.

[0006] Secondly, simply using a waterproof mesh board to isolate water molecules for dehumidification treatment requires continuous cleaning of the surface to ensure the use effect. After long-term use, the surface of the waterproof mesh board will be worn and damaged, so regular replacement and maintenance are required, which will increase the use cost. Summary of the Invention

[0007] (1) Technical Problems to be Solved

[0008] In view of the deficiencies in the prior art, the present invention provides a dehumidification and cooling device for an outdoor power ring network cabinet, which has the advantages of being able to perform enhanced processing on sensors, reduce interference from the external environment, improve cooling efficiency and ensure the cooling effect of the ring network cabinet, while also increasing the service life of dehumidification materials and reducing the cost of use. It solves the problem that the temperature sensor is easily affected by the external environment, resulting in insensitivity and easily affecting the subsequent cooling effect. The waterproof mesh plate isolates water molecules for dehumidification treatment, and the surface of the waterproof mesh plate will be worn and lost after long-term use, requiring regular replacement and maintenance, which will increase the cost of use.

[0009] (II) Technical solution

[0010] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dehumidification and cooling device for an outdoor power ring network cabinet, comprising a cabinet, a plurality of high-voltage switchgears and a box, wherein the plurality of high-voltage switchgears are respectively arranged inside the cabinet, the box is arranged above the cabinet, a partition is fixedly connected to the connection between the box and the cabinet, a PLC control cabinet is fixedly connected to the inner wall of the cabinet, a plurality of temperature and humidity sensors are electrically connected to one side of the PLC control cabinet, and further comprising:

[0011] A circulating heat exchange mechanism, which is arranged on the upper surface of the partition and is electrically connected to the PLC control cabinet;

[0012] A circulating dehumidification mechanism, which is arranged on the upper surface of the partition and is electrically connected to the PLC control cabinet;

[0013] The induction mechanism is respectively arranged on the side wall of one of the high-voltage switchgear and the PLC control cabinet and is electrically connected to the PLC control cabinet.

[0014] Preferably, the circulating heat exchange mechanism comprises a heat exchange water tank, a circulating water pump, a connecting seat, a serpentine heat exchange tube and a return pipe, the heat exchange water tank and the circulating water pump are respectively fixedly connected to the upper surface of the partition, the circulating water pump is fixedly arranged on the side wall of the heat exchange water tank and the water inlet pipe of the circulating water pump extends to the interior of the heat exchange water tank, the connecting seat is fixedly connected to the inner wall of the cabinet, the serpentine heat exchange tube is fixedly installed inside the connecting seat, one end of the serpentine heat exchange tube is fixedly connected to the water outlet pipe of the circulating water pump, the side of the heat exchange water tank facing away from the circulating water pump is fixedly connected to the return pipe, the end of the serpentine heat exchange tube facing away from the circulating water pump is fixedly connected to the return pipe, the serpentine heat exchange tube extends to the side walls of multiple high-voltage switchgear, the side wall of the heat exchange water tank is provided with an opening, and the inner wall of the opening is provided with a cooling mechanism;

[0015] Controlling the circulating water rate of the circulating water pump can accelerate the flow rate of the cooling liquid inside the serpentine heat exchange tube, the return pipe, and the heat exchange water tank, improve the heat exchange efficiency after the serpentine heat exchange tube contacts the high-voltage switchgear, and enhance the heat exchange and cooling effect.

[0016] Preferably, a plurality of heat exchange fins are respectively fixedly connected to the side walls of the plurality of high-voltage switchgears, and the serpentine heat exchange tubes respectively penetrate through the plurality of heat exchange fins;

[0017] The serpentine heat exchange tubes penetrate through the plurality of heat exchange fins, and the plurality of heat exchange fins are respectively fixedly arranged on the side walls of the plurality of high-voltage switchgears, which can improve the heat exchange contact effect between the serpentine heat exchange tubes and the high-voltage switchgears and ensure the heat exchange treatment effect.

[0018] Preferably, the cooling mechanism includes a semiconductor refrigeration sheet, a plurality of heat dissipation fins, and a heat dissipation fan. The semiconductor refrigeration sheet is fixedly installed on the inner wall of the heat exchange water tank at the opening. The plurality of heat dissipation fins are respectively fixedly connected to the side surface of the semiconductor refrigeration sheet facing away from the heat exchange water tank. The heat dissipation fan is fixedly connected to the inner wall of the top of the box body. A plurality of heat dissipation holes are respectively opened inside the plurality of heat dissipation fins, and a plurality of air permeable slots are opened on the side wall of the box body;

[0019] The semiconductor refrigeration sheet is arranged inside the heat exchange water tank to cool and lower the temperature of the coolant that absorbs heat and enters the heat exchange water tank after circulation, reduce the temperature of the coolant flowing out and entering the serpentine heat exchange tube, improve the heat exchange and cooling efficiency. The heat dissipation fins can timely export the heat generated by the semiconductor refrigeration sheet, and then the heat dissipation fan blows the outside air into the box body, and the air with heat can be discharged to the outside of the box body through the air permeable slots.

[0020] Preferably, the circulating dehumidification mechanism includes a dehumidification box, a circulating air pump, an air outlet pipe, a flow dividing plate, an air inlet cabinet, a drainage pipe, an air extraction pipe, and activated carbon dehumidification and adsorption particles. The dehumidification box is arranged above the partition board. The circulating air pump is fixedly connected to the side wall of the dehumidification box and the air outlet pipe extends into the dehumidification box. The air outlet pipe is fixedly connected to the inner wall of the dehumidification box on the side away from the circulating air pump. The activated carbon dehumidification and adsorption particles are filled in the dehumidification box. A strip-shaped opening is opened on the inner wall of the partition board. The flow dividing plate is fixedly connected inside the partition board at the strip-shaped opening. The air outlet pipe extends into the flow dividing plate. The air inlet cabinet is fixedly connected to the inner wall of the cabinet body. One end of the drainage pipe is fixedly connected inside the air inlet cabinet, and the other end of the drainage pipe extends to the outside of the box body. One end of the air extraction pipe is fixedly connected to the air inlet pipe of the circulating air pump, and the other end of the air extraction pipe extends to the outside of the box body. A drying mechanism is arranged at the bottom of the dehumidification box;

[0021] The circulating air pump can draw the gas inside the cabinet into the inside of the dehumidification box through the suction pipe, the drainage pipe and the air inlet cabinet. After the humid gas enters the inside of the dehumidification box, the water molecules in the air are adsorbed by the activated carbon dehumidification adsorption particles to ensure the drying effect. The dried air is re-discharged into the inside of the cabinet through the air outlet pipe and the shunt pipe, which can ensure the dehumidification treatment of the inside of the cabinet.

[0022] Preferably, a first solenoid valve is provided on the pipe wall of the air outlet pipe. One ends of the drainage pipe and the suction pipe located outside the box body are fixedly connected to a tee pipe at the same time. A regulating valve is installed on the pipe wall of the tee pipe. A moisture discharge pipe is fixedly connected to the side wall of the dehumidification box. A second solenoid valve is provided on the pipe wall of the moisture discharge pipe. The first solenoid valve, the regulating valve and the second solenoid valve are respectively electrically connected to the PLC control cabinet.

[0023] Preferably, the drying mechanism includes a drying box, two diversion pipes, two control valves and a plurality of diversion strips. The drying box is fixedly connected to the upper surface of the partition board. The dehumidification box is fixedly arranged on the upper surface of the drying box. The two diversion pipes are respectively installed on the side walls of the drying box. The ends of the two diversion pipes facing away from the drying box are provided with inclined openings on the pipe walls and extend into the inside of the return pipe. The two control valves are respectively installed on the pipe walls of the diversion pipes. The plurality of diversion strips are respectively fixedly installed in the drying box in a staggered manner;

[0024] The control valve controls the diversion pipe to be communicated with the return pipe. The pipe wall of the diversion pipe located inside the return pipe is provided with an inclined opening, which can ensure the diversion treatment of the coolant, so that the coolant with increased heat after heat exchange inside the return pipe can enter the inside of the drying box, which can increase the temperature of the drying box, and can heat and dry the activated carbon dehumidification adsorption particles filled inside the dehumidification box to volatilize the water molecules.

[0025] Preferably, a mounting plate is fixedly connected to the side wall of the air inlet cabinet. A plurality of temperature and humidity sensors are respectively fixedly connected to the upper surface of the mounting plate.

[0026] Preferably, the induction mechanism includes an induction controller, a connecting frame, an induction box body, a bimetallic strip and a pressure sensor. The induction controller is fixedly connected to the side wall of the PLC control cabinet. The connecting frame is fixedly connected to the side wall of the induction controller. One side of the connecting frame facing away from the induction controller is fixedly installed on the side wall of the high-voltage switchgear. The induction box body and the bimetallic strip are respectively fixedly connected to the side wall of the connecting frame. The pressure sensor is fixedly connected to the inner wall of the induction box body. The pressure sensor is electrically connected to the induction controller;

[0027] The connecting frame absorbs heat and conducts the heat to the bimetallic strip. When the bimetallic strip is heated and bent, it will exert a squeezing effect on the pressure sensor. At this time, the induction controller transmits the pressure signal to the inside of the PLC control cabinet, enabling the PLC control cabinet to compare and process the change of the pressure signal with the temperature data change of the temperature and humidity sensor, ensuring the continuous stability of temperature induction.

[0028] Preferably, a plurality of drainage plates are fixedly connected to the side wall of the intake cabinet. The drainage plates are arranged above the temperature and humidity sensor and are inclined.

[0029] (III) Beneficial effects

[0030] Compared with the prior art, the present invention provides a dehumidifying and cooling device for an outdoor power ring main unit, which has the following beneficial effects:

[0031] 1. For the dehumidifying and cooling device of the outdoor power ring main unit, by controlling the circulating water rate of the circulating water pump, the flow rate of the cooling liquid in the serpentine heat exchange tube, the return pipe and the heat exchange water tank can be accelerated, the heat exchange efficiency after the serpentine heat exchange tube contacts the high-voltage switch equipment can be improved, and the heat exchange and cooling effect can be enhanced. A semiconductor refrigerating sheet is arranged inside the heat exchange water tank to cool and lower the temperature of the cooling liquid that absorbs heat and enters the heat exchange water tank after circulation, reducing the temperature of the cooling liquid flowing out and entering the serpentine heat exchange tube, and improving the heat exchange and cooling efficiency.

[0032] 2. For the dehumidifying and cooling device of the outdoor power ring main unit, the circulating air pump can draw the gas inside the cabinet into the dehumidifying box through the suction pipe, the drainage pipe and the intake cabinet. After the humid gas enters the dehumidifying box, the water molecules in the air are adsorbed by the activated carbon dehumidifying and adsorbing particles to ensure the drying effect. The dried air is re-discharged into the cabinet through the air outlet pipe and the shunt pipe, ensuring the dehumidification treatment of the inside of the cabinet.

[0033] 3. For the dehumidifying and cooling device of the outdoor power ring main unit, the cooling liquid with increased heat after heat exchange inside the return pipe can enter the drying box, increasing the temperature of the drying box and enabling the heating and drying treatment of the activated carbon dehumidifying and adsorbing particles filled inside the dehumidifying box to volatilize the water molecules. Then, the circulating air pump can draw the external gas into the dehumidifying box through the suction pipe and the three-way pipe. After the gas enters the dehumidifying box, it will guide the volatilized water molecules to be discharged through the moisture discharge pipe, enabling the drying and moisture discharge treatment and improving the service life of the activated carbon dehumidifying and adsorbing particles.

[0034] 4. The dehumidifying and cooling device of the outdoor power ring main unit can accelerate the flow rate into the intake cabinet by circulating dehumidified gas passing through the diversion plate. The temperature and humidity sensor is installed on the side wall of the intake cabinet. During normal use, guiding the air flow past the temperature and humidity sensor can ensure the sensing accuracy of the temperature and humidity sensor. At the same time, when there is dust and impurities adhering to the surface of the temperature and humidity sensor, the air flow can blow off the impurities and dust in time to ensure the use effect of the temperature and humidity sensor.

[0035] 5. The dehumidifying and cooling device of the outdoor power ring main unit absorbs heat through the connecting frame and conducts the heat to the bimetal sheet. When the bimetal sheet is heated and bent, it will exert a squeezing effect on the pressure sensor. At this time, the sensing controller transmits the pressure signal to the inside of the PLC control cabinet, enabling the PLC control cabinet to perform a comparison process by combining the change of the pressure signal and the change of the temperature data of the temperature and humidity sensor, and conducting more precise regulation and control of the circulating water pump and the semiconductor refrigeration sheet to ensure the stability of the temperature control of the high-voltage switchgear. Brief Description of the Drawings

[0036] Figure 1 It is the front view of the structure of a dehumidifying and cooling device for an outdoor power ring main unit proposed by the present invention;

[0037] Figure 2 It is the rear view of the structure of a dehumidifying and cooling device for an outdoor power ring main unit proposed by the present invention;

[0038] Figure 3 It is the first cross-sectional view of the structure of a dehumidifying and cooling device for an outdoor power ring main unit proposed by the present invention;

[0039] Figure 4 It is the second cross-sectional view of the structure of a dehumidifying and cooling device for an outdoor power ring main unit proposed by the present invention;

[0040] Figure 5 It is the schematic diagram of the structure of the cooling mechanism in a dehumidifying and cooling device for an outdoor power ring main unit proposed by the present invention;

[0041] Figure 6 It is the schematic diagram of the structure of the dehumidifying mechanism in a dehumidifying and cooling device for an outdoor power ring main unit proposed by the present invention;

[0042] Figure 7 It is the schematic diagram of the structure of the PLC control cabinet and the temperature and humidity sensor in a dehumidifying and cooling device for an outdoor power ring main unit proposed by the present invention;

[0043] Figure 8 It is the schematic diagram of the structure of the PLC control cabinet and the sensing mechanism in a dehumidifying and cooling device for an outdoor power ring main unit proposed by the present invention;

[0044] Figure 9Schematic structural diagram of the induction mechanism in a dehumidifying and cooling device for an outdoor power ring main unit proposed by the present invention;

[0045] Figure 10 Schematic structural diagram of the drying mechanism of a dehumidifying and cooling device for an outdoor power ring main unit proposed by the present invention.

[0046] In the figure: 1 cabinet body, 2 high-voltage switchgear, 3 box body, 4 partition board, 5 PLC control cabinet, 6 heat exchange water tank, 7 circulating water pump, 8 connecting seat, 9 serpentine heat exchange tube, 10 heat exchange fins, 11 return pipe, 12 semiconductor refrigeration sheet, 13 heat dissipation fins, 14 heat dissipation fan, 15 dehumidification box, 16 circulating air pump, 17 air outlet pipe, 18 flow dividing plate, 19 air intake cabinet, 20 drainage pipe, 21 air extraction pipe, 22 activated carbon dehumidification adsorption particles, 23 first solenoid valve, 24 three-way pipe, 25 regulating valve, 26 mounting plate, 27 temperature and humidity sensor, 28 induction controller, 29 connecting frame, 30 induction box body, 31 bimetallic strip, 32 pressure sensor, 33 drainage plate, 34 drying box, 35 diversion pipe, 36 control valve, 37 diversion strip, 38 moisture exhaust pipe, 39 second solenoid valve. Specific embodiments

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] Referring to Figures 1-10 , a dehumidifying and cooling device for an outdoor power ring main unit includes a cabinet body 1, a plurality of high-voltage switchgears 2 and a box body 3. The plurality of high-voltage switchgears 2 are respectively arranged inside the cabinet body 1. The box body 3 is arranged above the cabinet body 1. A partition board 4 is fixedly connected at the connection between the box body 3 and the cabinet body 1. A PLC control cabinet 5 is fixedly connected to the inner wall of the cabinet body 1. One side of the PLC control cabinet 5 is electrically connected to a plurality of temperature and humidity sensors 27. The temperature and humidity sensors 27 can accurately sense the temperature and humidity changes inside the cabinet body 1, facilitating subsequent dehumidifying and cooling adjustments;

[0049] It also includes a circulating heat exchange mechanism. The circulating heat exchange mechanism is arranged on the upper surface of the partition plate 4 and is electrically connected to the PLC control cabinet 5. The circulating heat exchange mechanism includes a heat exchange water tank 6, a circulating water pump 7, a connecting seat 8, a serpentine heat exchange tube 9 and a return pipe 11. The heat exchange water tank 6 and the circulating water pump 7 are respectively fixedly connected to the upper surface of the partition plate 4. The circulating water pump 7 is fixedly arranged on the side wall of the heat exchange water tank 6 and the water inlet pipe of the circulating water pump 7 extends into the interior of the heat exchange water tank 6. The connecting seat 8 is fixedly connected to the inner wall of the cabinet body 1. The serpentine heat exchange tube 9 is fixedly installed inside the connecting seat 8. One end of the serpentine heat exchange tube 9 is fixedly connected to the water outlet pipe of the circulating water pump 7. The side of the heat exchange water tank 6 facing away from the circulating water pump 7 is fixedly connected to the return pipe 11. The end of the serpentine heat exchange tube 9 facing away from the circulating water pump 7 is fixedly connected to the return pipe 11. The serpentine heat exchange tube 9 extends to the side walls of a plurality of high-voltage switchgear 2. By controlling the circulating water rate of the circulating water pump 7, the flow rate of the cooling liquid inside the serpentine heat exchange tube 9, the return pipe 11 and the heat exchange water tank 6 can be increased, and the heat exchange efficiency after the serpentine heat exchange tube 9 contacts the high-voltage switchgear 2 can be improved, thereby enhancing the heat exchange and cooling effect.

[0050] A circulating dehumidification mechanism. The circulating dehumidification mechanism is arranged on the upper surface of the partition plate 4 and is electrically connected to the PLC control cabinet 5. The circulating dehumidification mechanism includes a dehumidification box 15, a circulating air pump 16, an air outlet pipe 17, a flow dividing plate 18, an air inlet cabinet 19, a drainage pipe 20, an air extraction pipe 21 and activated carbon dehumidification adsorption particles 22. The dehumidification box 15 is arranged above the partition plate 4. The circulating air pump 16 is fixedly connected to the side wall of the dehumidification box 15 and the air outlet pipe extends into the interior of the dehumidification box 15. The air outlet pipe 17 is fixedly connected to the inner wall of the dehumidification box 15 on the side facing away from the circulating air pump 16. The activated carbon dehumidification adsorption particles 22 are filled inside the dehumidification box 15. A strip-shaped opening is formed in the inner wall of the partition plate 4. The flow dividing plate 18 is fixedly connected inside the partition plate 4 at the strip-shaped opening. The air outlet pipe 17 extends into the flow dividing plate 18. The air inlet cabinet 19 is fixedly connected to the inner wall of the cabinet body 1. One end of the drainage pipe 20 is fixedly connected inside the air inlet cabinet 19. The end of the drainage pipe 20 facing away from the air inlet cabinet 19 extends to the outside of the box body 3. One end of the air extraction pipe 21 is fixedly connected to the air inlet pipe of the circulating air pump 16. The end of the air extraction pipe 21 facing away from the circulating air pump 16 extends to the outside of the box body 3. The circulating air pump 16 can draw the gas inside the cabinet body 1 into the dehumidification box 15 through the air extraction pipe 21, the drainage pipe 20 and the air inlet cabinet 19. After the humid gas enters the dehumidification box 15, the water molecules in the air are adsorbed by the activated carbon dehumidification adsorption particles 22 to ensure the drying effect. The dried air is discharged back into the cabinet body 1 through the air outlet pipe 17 and the flow dividing pipe 18, which can ensure the dehumidification treatment of the interior of the cabinet body 1.

[0051] A mounting plate 26 is fixedly connected to the side wall of the air intake cabinet 19. A plurality of temperature and humidity sensors 27 are respectively fixedly connected to the upper surface of the mounting plate 26. A plurality of drainage plates 33 are fixedly connected to the side wall of the air intake cabinet 19. The drainage plates 33 are arranged above the temperature and humidity sensors 27 and are inclined. The gas for circulating dehumidification will enter the air intake cabinet 19 at a faster flow rate after passing through the drainage plates 33. By installing the temperature and humidity sensors 27 on the side wall of the air intake cabinet 19, during normal use, the induction accuracy of the temperature and humidity sensors 27 can be ensured by guiding the air flow to pass through the temperature and humidity sensors 27. At the same time, when there is dust and impurities attached to the surface of the temperature and humidity sensors 27, the air flow can blow off the impurities and dust in time to ensure the use effect of the temperature and humidity sensors 27.

[0052] An opening is provided on the side wall of the heat exchange water tank 6. The inner wall of the opening is provided with a cooling mechanism. The cooling mechanism includes a semiconductor refrigeration sheet 12, a plurality of heat dissipation fins 13 and a heat dissipation fan 14. The semiconductor refrigeration sheet 12 is fixedly installed on the inner wall of the heat exchange water tank 6 at the opening. The semiconductor refrigeration sheet 12 can cool and lower the temperature of the coolant that absorbs heat and enters the interior of the heat exchange water tank 6 after circulation, can reduce the temperature of the coolant flowing out and entering the serpentine heat exchange tube 9, and improve the heat exchange and cooling efficiency. A plurality of heat dissipation fins 13 are respectively fixedly connected to the side surface of the semiconductor refrigeration sheet 12 facing away from the heat exchange water tank 6. The heat dissipation fan 14 is fixedly connected to the top inner wall of the box body 3. A plurality of heat dissipation holes are respectively provided inside the plurality of heat dissipation fins 13. A plurality of air permeable slots are provided on the side wall of the box body 3. The heat dissipation fins 13 can timely conduct the heat generated by the semiconductor refrigeration sheet 12, and then the heat dissipation fan 14 blows the outside gas into the interior of the box body 3, and the gas with heat can be discharged to the outside of the box body 3 through the air permeable slots. A plurality of heat exchange fins 10 are respectively fixedly connected to the side walls of a plurality of high-voltage switch devices 2. The serpentine heat exchange tube 9 respectively penetrates through the plurality of heat exchange fins 10. The serpentine heat exchange tube 9 penetrates through the plurality of heat exchange fins 10, and the plurality of heat exchange fins 10 are respectively fixedly arranged on the side walls of the plurality of high-voltage switch devices 2, which can improve the heat exchange contact effect between the serpentine heat exchange tube 9 and the high-voltage switch devices 2.

[0053] A first electromagnetic valve 23 is provided on the pipe wall of the air outlet pipe 17. One ends of the drainage pipe 20 and the air extraction pipe 21 located outside the box body 3 are simultaneously fixedly connected to a three-way pipe 24. A regulating valve 25 is installed on the pipe wall of the three-way pipe 24. A moisture discharge pipe 38 is fixedly connected to the side wall of the dehumidification box 15. A second electromagnetic valve 39 is provided on the pipe wall of the moisture discharge pipe 38. The first electromagnetic valve 23, the regulating valve 25 and the second electromagnetic valve 39 are respectively electrically connected to the PLC control cabinet 5, and the dehumidification pipeline can be adjusted according to the use requirements.

[0054] A drying mechanism is provided at the bottom of the dehumidification box 15, and the drying mechanism includes a drying box 34, two guide pipes 35, two control valves 36 and a plurality of guide strips 37. The drying box 34 is fixedly connected to the upper surface of the partition 4, and the dehumidification box 15 is fixedly arranged on the upper surface of the drying box 34. The two guide pipes 35 are respectively installed on the side walls of the drying box 34. The pipe walls of the two guide pipes 35 at one end away from the drying box 34 are obliquely arranged and extend to the inside of the return pipe 11. The two control valves 36 are respectively installed on the pipe walls of the guide pipes 35. The plurality of guide strips 37 are respectively staggered and fixedly installed in the drying box 34. The inside of the return pipe 11 The coolant with increased heat after partial heat exchange can enter the interior of the drying box 34, which can increase the temperature of the drying box 34, so that the activated carbon dehumidification adsorption particles 22 filled in the dehumidification box 15 can be heated and dried to volatilize the water molecules, and then the circulating air pump 16 can pump the external gas into the interior of the dehumidification box 15 through the exhaust pipe 21 and the three-way pipe 24. After the gas enters the interior of the dehumidification box 15, it will guide the volatilized water molecules to be discharged through the dehumidification pipe 38, and can be dried and dehumidified, which not only ensures the dehumidification effect of the dehumidification box 15, but also improves the service life of the activated carbon dehumidification adsorption particles 22.

[0055] The sensing mechanism is respectively arranged on the side wall of one of the high-voltage switchgear 2 and the PLC control cabinet 5 and is electrically connected to the PLC control cabinet 5. The sensing mechanism includes a sensing controller 28, a connecting frame 29, a sensing box body 30, a bimetallic strip 31 and a pressure sensor 32. The sensing controller 28 is fixedly connected to the side wall of the PLC control cabinet 5. The connecting frame 29 is fixedly connected to the side wall of the sensing controller 28. The side of the connecting frame 29 facing away from the sensing controller 28 is fixedly installed on the side wall of the high-voltage switchgear 2. The sensing box body 30 and the bimetallic strip 31 are respectively fixedly connected to the side wall of the connecting frame 29. The pressure sensor 32 is fixedly connected to the inner wall of the sensing box body 30. The pressure sensor 32 is electrically connected to the sensing controller 28. The connecting frame 29 absorbs heat and conducts the heat to the bimetallic strip 31. The bimetallic strip 31 bends due to heat and causes an extrusion effect on the pressure sensor 32. At this time, the sensing controller 28 transmits the pressure signal to the inside of the PLC control cabinet 5, which can enable the PLC control cabinet 5 to compare the changes in the pressure signal and the changes in the temperature data of the temperature and humidity sensor 27, and perform more precise regulation and control on the circulating water pump 7 and the semiconductor refrigeration sheet 12 to ensure the stability of the temperature control of the high-voltage switchgear 2.

[0056] In summary, for the dehumidifying and cooling device of the outdoor power ring main unit, when in use, a plurality of temperature and humidity sensors 26 are respectively installed on the connecting plate 26 and stably arranged on the side wall of the intake cabinet 19, so that the temperature and humidity sensors 26 can monitor and process the temperature and humidity changes inside the cabinet body 1. After the PLC control cabinet 5 senses the change of the temperature and humidity value, it will adjust the circulating heat exchange mechanism and the circulating dehumidifying mechanism;

[0057] By controlling the circulating water rate of the circulating water pump 7, the flow rate of the cooling liquid inside the serpentine heat exchange tube 9, the return pipe 11 and the heat exchange water tank 6 can be increased, and the heat exchange efficiency after the serpentine heat exchange tube 9 contacts the high-voltage switchgear 2 can be improved, and the heat exchange and cooling effect can be enhanced. The connecting seat 8 can stably install and set the serpentine heat exchange tube 9 inside the cabinet body 1, and the serpentine heat exchange tube 9 penetrates through a plurality of heat exchange fins 10. A plurality of heat exchange fins 10 are respectively fixedly arranged on the side walls of a plurality of high-voltage switchgears 2, which can improve the heat exchange contact effect between the serpentine heat exchange tube 9 and the high-voltage switchgear 2 and ensure the heat exchange treatment effect. A semiconductor refrigeration sheet 12 is arranged inside the heat exchange water tank 6 to cool and lower the temperature of the coolant that absorbs heat and enters the heat exchange water tank 6 after circulation, and can reduce the temperature of the coolant flowing out and entering the serpentine heat exchange tube 9, improving the heat exchange and cooling efficiency. Since one end of the semiconductor refrigeration sheet 12 away from the refrigeration side continuously generates heat, in order to improve the continuous use of the semiconductor refrigeration sheet 12, the heat dissipation fins 13 can timely conduct the heat generated by the semiconductor refrigeration sheet 12, and then the heat dissipation fan 14 blows the outside gas into the inside of the box body 3, and the gas with heat can be discharged to the outside of the box body 3 through the air permeable notch.

[0058] When it is necessary to dehumidify the inside of the cabinet body 1, the regulating valve 25 controls the communication between the drainage pipe 20 and the air extraction pipe 21, the top of the three-way pipe 24 is closed, the first solenoid valve 23 is opened, and the second solenoid valve 39 is closed. At this time, the dehumidifying mechanism is in the internal circulation state. At this time, the circulating air pump 16 can pump the gas inside the cabinet body 1 into the dehumidifying box 15 through the air extraction pipe 21, the drainage pipe 20 and the intake cabinet 19. After the humid gas enters the dehumidifying box 15, the water molecules in the air are adsorbed by the activated carbon dehumidifying and adsorbing particles 22 to ensure the drying effect. The dried air is discharged back into the cabinet body 1 through the air outlet pipe 17 and the shunt pipe 18, which can ensure the dehumidification treatment of the inside of the cabinet body 1.

[0059] After long-term use, a large amount of moisture accumulates inside the activated carbon dehumidification and adsorption particles 22. If not discharged, it will affect the subsequent dehumidification effect and service life. Therefore, drying and moisture removal treatment is required. During the time when the interior of the cabinet 1 does not need to be dehumidified, the regulating valve 25 controls the closing of the drainage pipe 20 and the air extraction pipe 21. The top of the three-way pipe 24 is opened, the first solenoid valve 23 is closed, and the second solenoid valve 39 is opened. The two control valves 36 control the connection of the diversion pipe 35 and the return pipe 11. The pipe wall of the diversion pipe 35 located inside the return pipe 11 is provided with an inclined opening, which can ensure the diversion treatment of the coolant, so that the coolant with increased heat after heat exchange inside the return pipe 11 can enter the drying box 34, which can increase the temperature of the drying box 34, thereby heating and drying the activated carbon dehumidification and adsorption particles 22 filled inside the dehumidification box 15, volatilizing water molecules, and then the circulating air pump 16 can send external gas into the dehumidification box 15 through the air extraction pipe 21 and the three-way pipe 24. After the gas enters the dehumidification box 15, it will guide the volatilized water molecules to be discharged through the moisture discharge pipe 38, and drying and moisture removal treatment can be carried out, which not only ensures the dehumidification effect of the dehumidification box 15, but also improves the service life of the activated carbon dehumidification and adsorption particles 22.

[0060] The circulating dehumidified gas will accelerate the flow rate into the intake cabinet 19 after passing through the diversion plate 33. By installing the temperature and humidity sensor 27 on the side wall of the intake cabinet 19, during normal use, the induction accuracy of the temperature and humidity sensor 27 can be ensured by guiding the air flow to pass through the temperature and humidity sensor 27. At the same time, when there are dust and impurities attached to the surface of the temperature and humidity sensor 27, the air flow can blow off the impurities and dust in time to ensure the use effect of the temperature and humidity sensor 27;

[0061] Furthermore, in order to prevent the temperature and humidity sensor 27 from being damaged and affecting the heat dissipation adjustment of the high-voltage switchgear 2, the bimetallic strip 31 is installed on the side wall of the connecting frame 29, and the connecting frame 29 is arranged on the side wall of the high-voltage switchgear 2. When the heat is overheated, the connecting frame 29 absorbs heat and conducts the heat to the bimetallic strip 31. The bimetallic strip 31 is heated and bent to cause an extrusion effect on the pressure sensor 32. At this time, the induction controller 28 transmits the pressure signal to the inside of the PLC control cabinet 5, which can enable the PLC control cabinet 5 to make a comparison process by combining the change of the pressure signal and the change of the temperature data of the temperature and humidity sensor 27, and perform more precise regulation on the circulating water pump 7 and the semiconductor refrigeration sheet 12 to ensure the stability of the temperature control of the high-voltage switchgear 2.

[0062] It should be noted that the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements that are inherent to such process, method, article, or apparatus. Without further limitation, an element qualified by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0063] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dehumidifying and cooling device for an outdoor power ring main unit, comprising a cabinet body (1), a plurality of high-voltage switchgear (2) and a box body (3), characterized in that: A plurality of the high-voltage switchgears (2) are respectively arranged inside the cabinet body (1), the box body (3) is arranged above the cabinet body (1), a partition board (4) is fixedly connected at the connection part between the box body (3) and the cabinet body (1), a PLC control cabinet (5) is fixedly connected to the inner wall of the cabinet body (1), and a plurality of temperature and humidity sensors (27) are electrically connected to one side of the PLC control cabinet (5). Further included are: A circulating heat exchange mechanism which is arranged on the upper surface of the partition board (4) and is electrically connected to the PLC control cabinet (5); A circulating dehumidification mechanism which is arranged on the upper surface of the partition board (4) and is electrically connected to the PLC control cabinet (5); An induction mechanism which is respectively arranged on the side walls of one of the high-voltage switchgears (2) and the PLC control cabinet (5) and is electrically connected to the PLC control cabinet (5).

2. The dehumidifying and cooling device for an outdoor power ring main unit according to claim 1, wherein: The circulating heat exchange mechanism includes a heat exchange water tank (6), a circulating water pump (7), a connecting seat (8), a serpentine heat exchange tube (9) and a return pipe (11). The heat exchange water tank (6) and the circulating water pump (7) are respectively fixedly connected to the upper surface of the partition board (4). The circulating water pump (7) is fixedly arranged on the side wall of the heat exchange water tank (6), and the water inlet pipe of the circulating water pump (7) extends into the interior of the heat exchange water tank (6). The connecting seat (8) is fixedly connected to the inner wall of the cabinet body (1). The serpentine heat exchange tube (9) is fixedly installed inside the connecting seat (8). One end of the serpentine heat exchange tube (9) is fixedly connected to the water outlet pipe of the circulating water pump (7). One side of the heat exchange water tank (6) facing away from the circulating water pump (7) is fixedly connected to the return pipe (11). The end of the serpentine heat exchange tube (9) facing away from the circulating water pump (7) is fixedly connected to the return pipe (11). The serpentine heat exchange tube (9) extends to the side walls of a plurality of high-voltage switchgears (2). An opening is formed in the side wall of the heat exchange water tank (6), and a cooling mechanism is arranged on the inner wall of the opening.

3. The dehumidifying and cooling device for an outdoor power ring main unit according to claim 2, characterized in that: A plurality of heat exchange fins (10) are respectively fixedly connected to the side walls of the plurality of high-voltage switchgears (2), and the serpentine heat exchange tube (9) respectively penetrates through the plurality of heat exchange fins (10).

4. The dehumidifying and cooling device for an outdoor power ring main unit according to claim 2, wherein: The cooling mechanism includes a semiconductor refrigeration sheet (12), a plurality of radiating fins (13) and a radiator fan (14). The semiconductor refrigeration sheet (12) is fixedly installed on the inner wall of the heat exchange water tank (6) at the opening. The plurality of radiating fins (13) are respectively fixedly connected to the side surface of the semiconductor refrigeration sheet (12) facing away from the heat exchange water tank (6). The radiator fan (14) is fixedly connected to the inner wall of the top end of the box body (3). A plurality of heat dissipation holes are respectively formed inside the plurality of radiating fins (13), and a plurality of ventilation slots are formed in the side wall of the box body (3).

5. The dehumidifying and cooling device for an outdoor power ring main unit according to claim 1, wherein: The circulating dehumidification mechanism comprises a dehumidification box (15), a circulating air pump (16), an air outlet pipe (17), a diverter plate (18), an air inlet cabinet (19), a drainage pipe (20), an air extraction pipe (21) and activated carbon dehumidification adsorption particles (22); the dehumidification box (15) is arranged above the partition (4); the circulating air pump (16) is fixedly connected to the side wall of the dehumidification box (15) and the air outlet pipe extends to the interior of the dehumidification box (15); the air outlet pipe (17) is fixedly connected to the inner wall of the dehumidification box (15) away from the circulating air pump (16); the activated carbon dehumidification adsorption particles (22) are filled and arranged in the interior of the dehumidification box (15); the inner wall of the partition (4) A strip opening is provided, the diverter plate (18) is fixedly connected to the partition (4) located inside the strip opening, the air outlet pipe (17) extends to the inside of the diverter plate (18), the air inlet cabinet (19) is fixedly connected to the inner wall of the cabinet (1), one end of the drainage pipe (20) is fixedly connected to the inside of the air inlet cabinet (19), the end of the drainage pipe (20) facing away from the air inlet cabinet (19) extends to the outside of the box (3), one end of the exhaust pipe (21) is fixedly connected to the air inlet pipe of the circulating air pump (16), the end of the exhaust pipe (21) facing away from the circulating air pump (16) extends outside the box (3), and a drying mechanism is provided at the bottom of the dehumidification box (15).

6. The dehumidifying and cooling device for an outdoor power ring main unit according to claim 5, wherein: A first solenoid valve (23) is provided on the wall of the air outlet pipe (17); one end of the drainage pipe (20) and the exhaust pipe (21) located outside the box body (3) is fixedly connected to a three-way pipe (24); a regulating valve (25) is installed on the wall of the three-way pipe (24); a dehumidification pipe (38) is fixedly connected to the side wall of the dehumidification box (15); a second solenoid valve (39) is provided on the wall of the dehumidification pipe (38); the first solenoid valve (23), the regulating valve (25) and the second solenoid valve (39) are electrically connected to the PLC control cabinet (5) respectively.

7. The dehumidifying and cooling device for an outdoor power ring main unit according to claim 5, characterized in that: The drying mechanism comprises a drying box (34), two guide pipes (35), two control valves (36) and a plurality of guide strips (37); the drying box (34) is fixedly connected to the upper surface of the partition (4); the dehumidification box (15) is fixedly arranged on the upper surface of the drying box (34); the two guide pipes (35) are respectively installed on the side walls of the drying box (34); the pipe walls of the two guide pipes (35) at one end away from the drying box (34) are obliquely arranged and extend to the interior of the return pipe (11); the two control valves (36) are respectively installed on the pipe walls of the guide pipes (35); and the plurality of guide strips (37) are respectively staggered and fixedly installed inside the drying box (34).

8. The dehumidifying and cooling device for an outdoor power ring main unit according to claim 5, wherein: A mounting plate (26) is fixedly connected to the side wall of the air intake cabinet (19), and a plurality of temperature and humidity sensors (27) are respectively fixedly connected to the upper surface of the mounting plate (26).

9. The dehumidifying and cooling device for an outdoor power ring main unit according to claim 1, characterized in that: The sensing mechanism comprises a sensing controller (28), a connecting frame (29), a sensing box body (30), a bimetallic strip (31) and a pressure sensor (32); the sensing controller (28) is fixedly connected to the side wall of the PLC control cabinet (5); the connecting frame (29) is fixedly connected to the side wall of the sensing controller (28); the side of the connecting frame (29) facing away from the sensing controller (28) is fixedly installed on the side wall of the high-voltage switch device (2); the sensing box body (30) and the bimetallic strip (31) are respectively fixedly connected to the side wall of the connecting frame (29); the pressure sensor (32) is fixedly connected to the inner wall of the sensing box body (30); and the pressure sensor (32) is electrically connected to the sensing controller (28).

10. The dehumidifying and cooling device for an outdoor power ring main unit according to claim 5, characterized in that: A plurality of guide plates (33) are fixedly connected to the side wall of the air intake cabinet (19), and the guide plates (33) are arranged above the temperature and humidity sensor (27) and are arranged obliquely.

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