Dehumidification device for box-type substation

Abstract

The dehumidification device comprises ventilation openings formed in the left end face and the right end face of the box-type substation respectively, a dehumidification box is arranged on the outer side of the ventilation opening in the right end of the box-type substation, a plurality of air supply channels are formed in the left side wall and the right side wall of the dehumidification box, and a plurality of low-temperature discs are arranged on the portion, between the air supply channels on the left side and the right side, of the rear wall of the dehumidification box. The plurality of low-temperature discs are made of a material with relatively low specific heat capacity; an air supply mechanism is arranged on the right end surface of the dehumidification box; the air supply mechanism is used for enabling external humid and hot air to enter the box-type substation through the right air supply channel, the low-temperature disc and the left air supply channel in sequence; the electrical equipment chemical corrosion phenomenon caused by water vapor is reduced, and the insulation performance of the insulator is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of box-type substation production, and in particular to a dehumidification device for a box-type substation. Background Art

[0002] A prefabricated substation, also known as a prefabricated substation or prefabricated substation, is a factory-fabricated, compact indoor or outdoor power distribution system that integrates high-voltage switchgear, distribution transformers, and low-voltage distribution equipment according to a specific wiring scheme. Due to their compact structure, vents are typically located on the left and right walls for heat dissipation.

[0003] Box-type substations are suitable for urban network construction and renovation. They are a new type of substation that has emerged after civil substations. Box-type substations are also suitable for mines, factories, enterprises, and oil and gas fields.

[0004] However, when a box-type substation is located in a relatively humid and hot environment (for example, a coastal environment), the water vapor in the humid and hot air can cause chemical corrosion of electrical equipment and surface corrosion of internal parts of the equipment. In addition, the water will be ionized under the action of the electric field, generating ions, which increase the number of conductive particles in the gas and thus reduce the insulation performance of the insulator.

[0005] A dehumidification device for a box-type substation known to the applicant (CN202222601808.8) discloses a dehumidification device for a box-type substation, comprising a base, a housing, and a baffle. A storage box is fixedly connected to each side wall of the housing. A humidity sensor is provided on the inner side wall of the housing. A fan is provided at the upper end of the housing. The storage box is provided with a dehumidification mechanism for dehumidifying the interior of the housing. The dehumidification mechanism includes two storage slots disposed within the storage box, one of which is provided with a mesh cylinder capable of being filled with desiccant. The mesh cylinder is filled with desiccant, and the side walls of the storage box are provided with two mounting plates. By placing desiccant inside the mesh cylinder, the utility model allows an electric telescopic rod to directly separate the mounting plate from the storage box via a connecting plate when the air humidity is high. The humid air passes through the storage slots filled with desiccant, where the moisture is absorbed by the desiccant. This prevents high-humidity air from being directly fed into the substation during rainy weather, causing damage to the components in the housing due to excessive humidity.

[0006] The above application has the following problems: desiccant can usually achieve a certain dehumidification effect in a closed environment, but the box-type substation has certain heat dissipation requirements. Therefore, the inner cavity of the box-type substation is mostly not a closed environment, and the desiccant cannot achieve an effective drying effect in a non-closed environment. Summary of the Invention

[0007] The purpose of the present invention is to provide a dehumidification device for a box-type substation, which can dry the incoming air at the vents while ventilating and dissipating heat in the box-type substation, so that the electrical components in the box-type substation are in a dry and low-temperature environment, reducing the chemical corrosion of electrical equipment caused by water vapor and improving the insulation performance of the insulators.

[0008] The present invention adopts the following technical solutions: A dehumidification device for a box-type substation includes a dehumidification box arranged corresponding to the right ventilation port of the box-type substation, a plurality of air supply channels are arranged on the dehumidification box and the left and right side walls, the air supply channel on the left side of the dehumidification box is arranged corresponding to the right ventilation port of the box-type substation, a plurality of low-temperature disks are arranged on the rear wall of the dehumidification box between the left and right air supply channels, and the plurality of low-temperature disks are all made of materials with low specific heat capacity, and an air supply mechanism is arranged on the right end face of the dehumidification box; the air supply mechanism is used to bring the hot and humid air from the outside into the box-type substation through the right air supply channel, the low-temperature disk and the left air supply channel in sequence.

[0009] Furthermore, each group of low-temperature disks is circular and several low-temperature disks are coaxially arranged; the rear part of the low-temperature disk is penetrated by the rear wall of the dehumidification box, the front part of the low-temperature disk is in the inner cavity of the dehumidification box, and a refrigeration part is also provided at the rear end of the dehumidification box, the refrigeration part includes a low-pressure evaporation box arranged at the rear end face of the dehumidification box and a high-pressure condensation box arranged at the lower end of the low-pressure evaporation box; a plurality of low-temperature disk accommodating grooves are provided on the front end face of the low-pressure evaporation box corresponding to the low-temperature disk, and the corresponding low-temperature disk accommodating grooves are inserted at the rear end of the low-temperature disk; and the upper and lower end faces of the low-temperature disk are respectively close to the top and bottom faces of the corresponding low-temperature disk accommodating grooves.

[0010] Furthermore, the inner cavity of the high-pressure condensing box is provided with a condensing coil, and the inner cavity of the low-pressure evaporating box is provided with an evaporating coil. An appropriate amount of refrigerant is provided in the condensing coil and the evaporating coil. A capillary tube of a set diameter is connected between the right outlet of the condensing coil and the right inlet of the evaporating coil. A compression device is also provided between the left inlet of the condensing coil and the left outlet of the evaporating coil. A pumping outlet and a pumping inlet are respectively provided on the upper and lower sides of the compression device; the pumping outlet is connected to the left inlet of the condensing coil, and the pumping inlet is connected to the left outlet of the evaporating coil.

[0011] Furthermore, the compression device includes a pump casing arranged on the left side of the dehumidification box, the right side of the pump casing is open and the pump chamber is rectangular, a matching piston is inserted into the rectangular inner cavity, the piston is connected to the pump casing for left and right sliding movement through the inner cavity, and several groups of first return springs are evenly arranged between the side wall of the pump chamber and the left end face of the piston; the first return spring is always in a compressed state and the right end face of each group of pistons is close to the circumference of the corresponding low-temperature disk, and the rear end face of the piston is close to the end face of the opening of the low-temperature disk accommodating groove, and the first one-way valve and the second one-way valve are respectively provided at the upper and lower ends of the pump casing, and the first one-way valve and the second one-way valve are both connected to the pump chamber in one direction, the first one-way valve conducts in a direction to the outside of the pump casing, and the second one-way valve conducts in a direction to the inner cavity of the pump casing.

[0012] Furthermore, the several low-temperature disk accommodating grooves are all semicircular, and the low-pressure evaporator box is rotatably provided with a support shaft along the axis of the low-temperature disk accommodating groove; the low-temperature disk and the support shaft are eccentrically arranged and fixedly connected, and the radius of the low-temperature disk accommodating groove is larger than the maximum eccentric radius of the low-temperature disk; a drive motor is also fixedly provided at the upper end of the low-pressure evaporator box, and the output end of the drive motor is fixedly connected to the support shaft; the low-temperature disk accommodating groove is rotatably connected to the corresponding low-temperature disk.

[0013] Furthermore, a sealing portion is provided on the right side of the low-pressure evaporation box, and the sealing portion includes a sealing groove provided on the right side of the dehumidification box, the left side of the sealing groove is open and the inner cavity of the sealing groove is rectangular, a matching sealing block is inserted into the rectangular inner cavity, the sealing block is connected to the sealing groove for left and right sliding, and a plurality of groups of second return springs are evenly provided between the side wall of the sealing groove and the right end face of the sealing block; the second return spring is in a compressed state and the left end face of the sealing block is in close contact with the circumference of the low-temperature disk; the rear end face of the sealing block is in close contact with the end face of the opening of the low-temperature disk accommodating groove; the circumference of the low-temperature disk and the inner cavity of the sealing groove form a variable closed space; Furthermore, the right opening of the top wall of each group of low-temperature disk accommodating grooves is chamfered, and a number of water suction holes are vertically arranged along the chamfered slope. The lower end of the water suction hole is open, and the upper end is connected in sequence through the water suction pipe. The rightmost opening of the water suction pipe is connected to the variable enclosed space. A third one-way valve is also provided at the rightmost opening of the water suction pipe, and the third one-way valve is unidirectionally conductive to the inside of the variable enclosed space; the adjacent two groups of low-temperature disk accommodating grooves are connected through corresponding drainage holes, and a fourth one-way valve is provided on the upper part of each group of drainage holes. The bottom wall of the lower low-temperature disk accommodating groove is connected to the outside of the low-pressure evaporator through the corresponding fourth one-way valve; the conduction direction of the fourth one-way valve is unidirectional downward.

[0014] Furthermore, the lower end of the drainage hole is connected to the inner cavity of the high-pressure condensing box, a condensing coil is provided at the lower part of the inner cavity of the high-pressure condensing box, and a drainage through hole is opened on the side wall of the upper part of the inner cavity of the high-pressure condensing box.

[0015] Furthermore, the air supply mechanism may be an electronic fan.

[0016] Furthermore, the capillary tube is spiral-shaped, and both ends of the capillary tube are respectively connected to the right outlet of the condensing coil and the right inlet of the evaporating coil.

[0017] The present invention realizes cooling and drying of the air entering the box-type substation at the vent by arranging a low-temperature plate, and removes water vapor in the air entering the box-type substation while cooling the box-type substation.

[0018] The present invention realizes continuous cooling of the low-temperature disk by providing a low-pressure evaporation box, further improving the efficiency of drying the intake air of the low-temperature disk; The present invention realizes the circulation of the refrigerant in the low-pressure evaporator by arranging a compression device, thereby further improving the dehumidification efficiency of the dehumidification device; The present invention realizes the cleaning of small water droplets on the low-temperature disk by setting a variable enclosed space and utilizing the change of pressure in the variable enclosed space, thereby further reducing the probability of small water droplets entering the inner cavity of the box-type substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the box-type substation in the present invention; Figure 2 It is a structural schematic diagram of the dehumidification box in the present invention; Figure 3 Schematic diagram of the structure of the air supply channel in the present invention; Figure 4 Schematic diagram of the structure of the air supply mechanism of the present invention; Figure 5 It is a structural schematic diagram of the low-pressure evaporation box of the present invention; Figure 6 Schematic diagram of the structure of the driving motor in the present invention; Figure 7 Schematic diagram of the structure of the evaporation coil in the present invention; Figure 8 Schematic diagram of the structure of the first return spring in the present invention; Figure 9 Schematic diagram of the structure of the sealing groove in the present invention; Figure 10 Schematic diagram of the structure of the second return spring in the present invention; Figure 11 Schematic diagram of the structure of the water absorption hole in the present invention; Figure 12 It is a structural schematic diagram of the low-pressure evaporation box of the present invention; Figure 13 Schematic diagram of the structure of the fourth one-way valve in the present invention; Figure 14 Schematic diagram of the structure of the variable enclosed space in the present invention; Figure 15 It is a structural schematic diagram of the low-temperature disk in the present invention.

[0020] In the figure, 1. box-type substation; 2. dehumidification box; 3. air supply channel; 4. low-temperature disk; 5. air supply mechanism; 6. low-pressure evaporation box; 7. high-pressure condensation box; 8. condensing coil; 9. evaporating coil; 10. capillary tube; 11. pump casing; 12. pumping outlet; 13. pumping inlet; 14. piston; 15. first return spring; 16. first one-way valve; 17. second one-way valve; 18. low-temperature disk accommodating groove; 19. support shaft; 20. drive motor; 21. sealing groove; 22. sealing block; 23. second return spring; 24. variable enclosed space; 25. third one-way valve; 26. fourth one-way valve; 27. drainage hole; 28. chamfer; 29. ​​water suction hole; 30. water suction pipe; 31. drainage through hole. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to the accompanying drawings and embodiments: like Figures 1 to 15 As shown, the dehumidification device for a box-type substation described in the present invention includes a dehumidification box 2 arranged corresponding to the right side vent of the box-type substation 1, and a plurality of air supply channels 3 are provided on the dehumidification box 2 and the left and right side walls. The air supply channel 3 on the left side of the dehumidification box 2 is arranged corresponding to the right side vent of the box-type substation 1, and a plurality of low-temperature disks 4 are provided on the rear wall of the dehumidification box 2 between the left and right air supply channels 3. The plurality of low-temperature disks 4 are all made of materials with low specific heat capacity, and an air supply mechanism 5 is provided on the right end face of the dehumidification box 2; the air supply mechanism 5 is used to bring the hot and humid air from the outside into the box-type substation 1 through the right side air supply channel 3, the low-temperature disk 4 and the left side air supply channel 3 in sequence.

[0022] When the box-type substation is in a relatively humid and hot environment and the external ambient temperature drops (for example, at night), the temperature of the low-temperature disk 4 drops quickly and the surface temperature of the low-temperature disk 4 is relatively low because the low-temperature disk 4 is made of a material with a low specific heat capacity; when the air supply mechanism 5 sends the hot and humid air from the outside into the dehumidification box 2 through the right air supply channel 3, since the hot and humid air in the dehumidification box 2 contains a large amount of water vapor, the water vapor quickly releases heat after encountering the low-temperature disk 4 with a lower temperature and condenses into small water droplets on the surface of the low-temperature disk 4. The hot and humid air forms relatively dry cold air after passing through the low-temperature disk 4. The dry cold air enters the box-type substation 1 through the left air supply channel 3, so that the dehumidification device cools down the box-type substation 1 while removing water vapor in the outside air.

[0023] However, when the external ambient temperature rises (for example, during the day), the temperature of the low-temperature disk 4 rises rapidly because the low-temperature disk 4 is made of a material with a low specific heat capacity; the hot and humid air from the outside enters the inner cavity of the dehumidification box 2 and contacts the low-temperature disk 4. At this time, the surface temperature of the low-temperature disk 4 is relatively high and close to the temperature of the hot and humid air. The water vapor in the hot and humid air cannot condense on the surface of the low-temperature disk 4, which is not conducive to the formation of dry air, resulting in a narrower scope of application of the dehumidification device.

[0024] When the external environment temperature changes, in order to keep the temperature of the low temperature plate 4 at the set low temperature; In the present invention, each group of low-temperature disks 4 is circular and several low-temperature disks 4 are coaxially arranged; the rear part of the low-temperature disk 4 is penetrated by the rear wall of the dehumidification box 2, and the front part of the low-temperature disk 4 is in the inner cavity of the dehumidification box 2. The rear end of the dehumidification box 2 is also provided with a refrigeration unit, which includes a low-pressure evaporation box 6 arranged on the rear end surface of the dehumidification box 2 and a high-pressure condensation box 7 arranged at the lower end of the low-pressure evaporation box 6; a plurality of low-temperature disk accommodating grooves 18 are provided on the front surface of the low-pressure evaporation box 6 corresponding to the low-temperature disk 4, and the corresponding low-temperature disk accommodating grooves 18 are inserted into the rear part of the low-temperature disk 4; and the upper and lower end surfaces of the low-temperature disk 4 are respectively in close contact with the top and bottom surfaces of the corresponding low-temperature disk accommodating grooves 18; the low-temperature disk 4 can be made of aluminum; the low-pressure evaporation box 6 is used to cool the rear of the low-temperature disk 4; When in use, the rear of the low-temperature disk 4 is cooled by the low-pressure evaporator 6. Since the aluminum material has good thermal conductivity, the front of the low-temperature disk 4 can always maintain the set low temperature, further reducing the impact of the increase in external ambient temperature on the temperature of the low-temperature disk 4.

[0025] In this embodiment, a condensing coil 8 is provided in the inner cavity of the high-pressure condensing tank 7, and an evaporating coil 9 is provided in the inner cavity of the low-pressure evaporating tank 6. An appropriate amount of refrigerant, such as R410A, is provided in both the condensing coil 8 and the evaporating coil 9. A capillary tube 10 of a predetermined diameter is connected between the right outlet of the condensing coil 8 and the right inlet of the evaporating coil 9. A compression device is also provided between the left inlet of the condensing coil 8 and the left outlet of the evaporating coil 9. A pumping outlet 12 and a pumping inlet 13 are provided on the upper and lower sides of the compression device, respectively. The pumping outlet 12 is connected to the left inlet of the condensing coil 8, and the pumping inlet 13 is connected to the left outlet of the evaporating coil 9. When adding refrigerant to the refrigeration unit for the first time, the condensing coil 8 or the evaporating coil 9 is vacuumed. When the set vacuum degree is reached in the condensing coil 8 and the evaporating coil 9, the compression device is started and the set mass of refrigerant is added to the evaporating coil 9 near the pumping inlet 13. During operation, due to the low pressure in the evaporating disk, the refrigerant absorbs heat and becomes gaseous, that is, the refrigerant in the evaporating coil 9 is in a low-pressure and low-temperature gaseous state, and the low-temperature gaseous state cools the low-temperature disk 4 in the inner cavity of the low-pressure evaporating box 6; the compression device pumps the low-pressure and low-temperature gaseous refrigerant to A high-temperature and high-pressure gaseous refrigerant is formed in the condensing coil 8. The high-temperature and high-pressure gaseous refrigerant dissipates heat to the outside in the condensing coil 8. Since the pressure in the condensing coil 8 is relatively high, the high-temperature and high-pressure gaseous refrigerant dissipates heat to form a high-pressure, room-temperature liquid. After the high-pressure, room-temperature liquid refrigerant passes through the capillary tube 10, due to the small diameter of the capillary tube 10, the pressure of the refrigerant passing through the capillary tube 10 is rapidly reduced, and then it is reformed into a low-pressure, low-temperature gaseous refrigerant. The refrigerant is circulated in the evaporating coil 9 and the condensing coil 8 by pumping through the compression device.

[0026] In the present invention, the compression device includes a pump housing 11 disposed on the left side of the dehumidifier tank 2. The right side of the pump housing 11 is open, and the pump chamber is rectangular. A matching piston 14 is inserted into the rectangular chamber, which is slidably connected to the pump housing 11 through the chamber. Several groups of first return springs 15 are evenly spaced between the sidewalls of the pump chamber and the left end face of the piston 14. The first return springs 15 are always compressed, and the right end face of each group of pistons 14 abuts the circumference of the corresponding low-temperature disk 4, while the rear end face of the piston 14 abuts the end face of the opening of the low-temperature disk receiving groove 18. A first one-way valve 16 and a second one-way valve 17 are respectively disposed at the upper and lower ends of the pump housing 11. Both the first one-way valve 16 and the second one-way valve 17 are in one-way communication with the pump chamber. The first one-way valve 16 opens to the outside of the pump housing 11, while the second one-way valve 17 opens to the interior of the pump housing 11.

[0027] In order to drive the piston 14 to move left and right, in this embodiment, several low-temperature disk accommodating grooves 18 provided on the front end surface of the low-pressure evaporator box 6 are all semicircular, and a support shaft 19 is rotatably passed through the low-pressure evaporator box 6 along the axis of the low-temperature disk accommodating groove 18; the low-temperature disk 4 and the support shaft 19 are eccentrically arranged and fixedly connected, and the radius of the low-temperature disk accommodating groove 18 is greater than the maximum eccentric radius of the low-temperature disk 4 (the maximum distance from the axis center of the support shaft 19 to the circumference of the low-temperature disk 4); a drive motor 20 is also fixedly provided on the upper end of the low-pressure evaporator box 6, and the output end of the drive motor 20 is fixedly connected to the support shaft 19; the low-temperature disk accommodating groove 18 is rotatably connected to the corresponding low-temperature disk 4.

[0028] When the compression device is started, the drive motor 20 drives the support shaft 19 to rotate, and the low-temperature disk 4 fixed to the support shaft 19 rotates. Since the first return spring 15 is in a compressed state and the right end surface of each group of pistons 14 is in close contact with the corresponding low-temperature disk 4 circumference, the low-temperature disk 4 circumferentially drives the pistons 14 to move left and right; when the pressure in the inner cavity of the pump casing 11 decreases, the gaseous refrigerant in the evaporating coil 9 flows into the inner cavity of the pump casing 11 through the second one-way valve 17. When the pressure in the inner cavity of the pump casing 11 increases, the gaseous refrigerant in the inner cavity of the pump casing 11 flows into the condensing coil 8 connected to the outside of the pump casing 11 through the first one-way valve 16. After the refrigerant dissipates heat and liquefies through the condensing coil 8, it absorbs heat and vaporizes through the capillary 10 and then returns to the evaporating coil 9.

[0029] When the box-type substation is in a relatively humid and hot environment, the humid and hot air from the outside comes into contact with the low-temperature cryogenic disk 4, and the water vapor in the air condenses into small water droplets on the surface of the cryogenic disk 4. After the small water droplets gather to form larger water droplets, they may separate from the surface of the cryogenic disk 4 under the influence of gravity and wind, forming splashes; in order to prevent the water droplets from separating and splashing into the box-type substation 1, causing damage to the motor components, during the rotation of the cryogenic disk 4, the small water droplets on the surface of the cryogenic disk 4 are collected and most of them flow into the set space.

[0030] In the present invention, a sealing portion is provided on the right side of the low-pressure evaporation box 6, and the sealing portion includes a sealing groove 21 provided on the right side of the dehumidification box 2. The sealing groove 21 is open on the left side and the inner cavity of the sealing groove 21 is rectangular. A matching sealing block 22 is inserted into the rectangular inner cavity. The sealing block 22 is slidably connected to the sealing groove 21 left and right. A plurality of groups of second return springs 23 are evenly provided between the side wall of the sealing groove 21 and the right end face of the sealing block 22; the second return spring 23 is in a compressed state and the left end face of the sealing block 22 is in close contact with the circumference of the low-temperature disk 4; the rear end face of the sealing block 22 is in close contact with the end face of the opening of the low-temperature disk accommodating groove 18; because the left and right sides of the opening of the low-temperature disk accommodating groove 18 are respectively in close contact with the piston 14 and the rear end face of the sealing block 22; the circumference of the low-temperature disk 4 and the inner cavity of the sealing groove 21 form a variable closed space 24; Since the low-temperature disk 4 is eccentrically rotated in the low-temperature disk accommodating groove 18, when the low-temperature disk 4 rotates around the support shaft 19, the volume of the variable enclosed space 24 changes periodically with the eccentric rotation of the low-temperature disk 4; when the low-temperature disk 4 rotates counterclockwise, when the maximum eccentric radius of the low-temperature disk 4 is directly in front and gradually rotates counterclockwise, the variable enclosed space 24 gradually decreases, and the variable enclosed space 24 forms a positive pressure; when the maximum eccentric radius of the low-temperature disk 4 is directly behind and gradually rotates counterclockwise, the variable enclosed space 24 gradually increases, and the variable enclosed space 24 forms a negative pressure; In order to form a pumping effect on the small water droplets on the surface of the low-temperature disk 4 through the pressure change in the variable closed space 24, in the present invention, the right opening of the top wall of each group of low-temperature disk accommodating grooves 18 is chamfered 28, and a number of water suction holes 29 are vertically arranged along the inclined surface of the chamfer 28. The lower end of the water suction hole 29 is open, and the upper end is connected in sequence through the water suction pipe 30. The rightmost opening of the water suction pipe 30 is connected to the variable closed space 24. A third one-way valve 25 is also provided at the rightmost opening of the water suction pipe 30, and the third one-way valve 25 is unidirectional to the inside of the variable closed space 24; the adjacent two groups of low-temperature disk accommodating grooves 18 are connected through corresponding drainage holes 27, and a fourth one-way valve 26 is provided on the upper part of each group of drainage holes 27. The bottom wall of the lowest low-temperature disk accommodating groove 18 is connected to the outside of the low-pressure evaporator 6 through the corresponding fourth one-way valve 26; the fourth one-way valve 26 is unidirectional downward.

[0031] During operation, the low-temperature disk 4 rotates counterclockwise, and the small water droplets condensed on the surface of the low-temperature disk 4 rotate counterclockwise along the low-temperature disk 4. Since the upper surface of the low-temperature disk 4 is in close contact with the top wall of the low-temperature disk accommodating groove 18, the small water droplets pass through and gather at the right chamfer 28 of the top wall of each group of low-temperature disk accommodating grooves 18. When the variable enclosed space 24 gradually increases, the negative pressure formed by the variable enclosed space 24 causes the small water droplets gathered at the chamfer 28 of the right opening of the top wall of the low-temperature disk accommodating groove 18 to enter the water suction pipe 30 through the water suction hole 29 and finally enter the inner cavity of the low-temperature disk accommodating groove 18. When the variable enclosed space 24 gradually decreases, a positive pressure is formed in the variable enclosed space 24. Under the pressure of the inner cavity of the low-temperature disk accommodating groove 18, the small water droplets collected in the inner cavity of the low-temperature disk accommodating groove 18 enter the drain pipe through the drain hole 27. Under the downward unidirectional action of the fourth one-way valve 26, the collected small water droplets are finally discharged out of the low-pressure evaporator 6.

[0032] In order to adjust the condensation effect of the high-pressure condensation tank 7, the lower end of the drainage hole 27 is connected to the inner cavity of the high-pressure condensation tank 7. The condensation coil 8 is arranged at the lower part of the inner cavity of the high-pressure condensation tank 7. A drainage through hole 31 is opened on the side wall of the upper part of the inner cavity of the high-pressure condensation tank 7. When the air moisture content in the external environment is high, more condensed water enters the inner cavity of the high-pressure condensation tank 7. When the condensed water covers the evaporation coil 9, it is discharged to the outside space through the drainage hole 31. The continuous circulation of the condensed water and the continuous flow of low-temperature condensed water into the inner cavity of the high-pressure condensation tank 7 further increase the liquefaction speed of the refrigerant in the evaporation coil 9 and improve the atomization and cooling effect of the refrigerant in the evaporation coil 9.

[0033] When the moisture content of the air in the external environment is low, less condensed water enters the inner cavity of the high-pressure condenser box 7, and the condensed water cannot continue to flow and be discharged through the drainage hole 31. The temperature of the condensed water will continue to rise, reducing the liquefaction speed of the refrigerant in the evaporating coil 9 and reducing the atomization cooling effect of the refrigerant in the evaporating coil 9.

[0034] In this embodiment, the air supply mechanism 5 may be an electronic fan.

[0035] In this embodiment, the capillary tube 10 is spiral-shaped, and two ends of the capillary tube 10 are respectively connected to the right outlet of the condensing coil 8 and the right inlet of the evaporating coil 9 .

[0036] During operation, the electronic fan and the drive motor 20 are started at the same time, the drive motor 20 drives the support shaft 19 to rotate, and the low-temperature disk 4 fixed to the support shaft 19 rotates counterclockwise. While the low-temperature disk 4 rotates counterclockwise, the low-temperature disk 4 drives the piston 14 to move left and right in the circumferential direction; since the first and second one-way valves 16 and 17 are respectively provided at the upper and lower ends of the pump casing 11 of the compression device, and the first and second one-way valves 16 and 17 are both connected to the pump chamber in one direction, the first one-way valve 16 conducts in the outside of the pump chamber, and the second one-way valve 17 conducts in the inside of the pump chamber. The compression device pumps the low-pressure, low-temperature gaseous refrigerant into the condensing coil 8 to form a high-temperature, high-pressure gaseous refrigerant. The high-temperature, high-pressure gaseous refrigerant dissipates heat to the outside in the condensing coil 8. Since the pressure in the condensing coil 8 is relatively high, the high-temperature, high-pressure gaseous refrigerant dissipates heat to form a high-pressure, room-temperature liquid. After the high-pressure, room-temperature liquid refrigerant passes through the capillary tube 10, due to the small diameter of the capillary tube 10, the pressure of the refrigerant passing through the capillary tube 10 is rapidly reduced and then re-formed into a low-pressure, low-temperature gaseous refrigerant. The refrigerant is circulated in the evaporating coil 9 and the condensing coil 8 through the pumping of the compression device.

[0037] As the low-temperature disk 4 rotates counterclockwise, the small water droplets condensed on the surface of the low-temperature disk 4 rotate counterclockwise along the low-temperature disk 4. Since the upper surface of the low-temperature disk 4 is in close contact with the top wall of the low-temperature disk receiving groove 18, the small water droplets pass through and gather at the right chamfer 28 of the top wall of each group of low-temperature disk receiving grooves 18. When the variable closed space 24 gradually increases, the negative pressure formed by the variable closed space 24 causes the small water droplets gathered at the chamfer 28 of the right opening of the top wall of the low-temperature disk receiving groove 18 to enter the water suction pipe 30 through the water suction hole 29 and finally enter the low-temperature disk receiving groove 18 cavity, when the variable enclosed space 24 is gradually reduced, a positive pressure is formed in the variable enclosed space 24. Under the pressure of the cavity of the low-temperature disk accommodating tank 18, the small water droplets collected in the cavity of the low-temperature disk accommodating tank 18 enter the drain pipe through the drain hole 27. Under the action of the downward one-way conduction of the fourth one-way valve 26, the collected small water droplets are finally discharged into the high-pressure condenser tank 7; the condensed water entering the cavity of the high-pressure condenser tank 7 is discharged to the outside space through the drainage through hole 31. Due to the continuous circulation of the condensed water, the refrigerant in the evaporating coil 9 dissipates heat and liquefies.

Claims

1. A dehumidification device for a box-type substation, characterized by: The invention comprises a dehumidification box (2) arranged corresponding to the right ventilation opening of the box-type substation (1), the dehumidification box (2) and the left and right side walls are both provided with a plurality of air supply channels (3), the left air supply channel (3) of the dehumidification box (2) is arranged corresponding to the right ventilation opening of the box-type substation (1), a plurality of low-temperature disks (4) are arranged on the rear wall of the dehumidification box (2) between the left and right air supply channels (3), the plurality of low-temperature disks (4) are all made of a material with a low specific heat capacity, and an air supply mechanism (5) is arranged on the right end face of the dehumidification box (2); the air supply mechanism (5) is used to sequentially guide hot and humid air from the outside into the box-type substation (1) through the right air supply channel (3), the low-temperature disk (4) and the left air supply channel (3).

2. The dehumidification device for a box-type substation according to claim 1, characterized in that: Each group of low-temperature disks (4) is circular and several low-temperature disks (4) are coaxially arranged; the rear of the low-temperature disk (4) is penetrated by the rear wall of the dehumidification box (2), the front of the low-temperature disk (4) is located in the inner cavity of the dehumidification box (2), and the rear end of the dehumidification box (2) is also provided with a refrigeration unit, which includes a low-pressure evaporation box (6) arranged on the rear end surface of the dehumidification box (2) and a high-pressure condensation box (7) arranged at the lower end of the low-pressure evaporation box (6); a plurality of low-temperature disk accommodating grooves (18) are provided on the front end surface of the low-temperature disk (6) corresponding to the low-temperature disk (4), and the rear of the low-temperature disk (4) is inserted with the corresponding low-temperature disk accommodating grooves (18); and the upper and lower end surfaces of the low-temperature disk (4) are respectively in close contact with the top surface and bottom surface of the corresponding low-temperature disk accommodating groove (18).

3. The dehumidification device for a box-type substation according to claim 2, characterized in that: The inner cavity of the high-pressure condensing box (7) is provided with a condensing coil (8), and the inner cavity of the low-pressure evaporating box (6) is provided with an evaporating coil (9). A proper amount of refrigerant is provided in the condensing coil (8) and the evaporating coil (9). A capillary tube (10) of a set diameter is connected between the right outlet of the condensing coil (8) and the right inlet of the evaporating coil (9). A compression device is also provided between the left inlet of the condensing coil (8) and the left outlet of the evaporating coil (9). The upper and lower sides of the compression device are respectively provided with a pumping outlet (12) and a pumping inlet (13); the pumping outlet (12) is connected to the left inlet of the condensing coil (8), and the pumping inlet (13) is connected to the left outlet of the evaporating coil (9).

4. The dehumidification device for a box-type substation according to claim 3, characterized in that: The compression device includes a pump housing (11) arranged on the left side of the dehumidification box (2), the right side of the pump housing (11) is open and the pump cavity is rectangular, a matching piston (14) is inserted into the rectangular inner cavity, the piston (14) is connected to the pump housing (11) through the inner cavity in a left-right sliding manner, and a plurality of groups of first return springs (15) are evenly arranged between the side wall of the pump cavity and the left end face of the piston (14); the first return spring (15) is always in a compressed state and the right end face of each group of pistons (14) is in close contact with the corresponding low-temperature disk (4) in the circumferential direction, and the rear end face of the piston (14) is in close contact with the end face of the opening of the low-temperature disk accommodating groove (18), and the upper and lower ends of the pump housing (11) are respectively provided with a first one-way valve (16) and a second one-way valve (17), and the first one-way valve (16) and the second one-way valve (17) are both in one-way communication with the pump cavity, the first one-way valve (16) is in a conducting direction toward the outside of the pump housing (11), and the second one-way valve (17) is in a conducting direction toward the inner cavity of the pump housing (11).

5. The dehumidification device for a box-type substation according to claim 2, characterized in that: The plurality of low-temperature disk accommodating grooves (18) are all semicircular, and a support shaft (19) is provided on the low-pressure evaporation box (6) so as to be rotatable along the axis of the low-temperature disk accommodating groove (18); the low-temperature disk (4) and the support shaft (19) are eccentrically arranged and fixedly connected, and the radius of the low-temperature disk accommodating groove (18) is larger than the maximum eccentric radius of the low-temperature disk (4); a driving motor (20) is also fixedly provided on the upper end of the low-pressure evaporation box (6), and the output end of the driving motor (20) is fixedly connected to the support shaft (19); the low-temperature disk accommodating groove (18) is rotatably connected to the corresponding low-temperature disk (4).

6. The dehumidification device for a box-type substation according to claim 5, characterized in that: The low-pressure evaporation box (6) is provided with a sealing portion on the right side, and the sealing portion includes a sealing groove (21) provided on the right side of the dehumidification box (2), the sealing groove (21) is open on the left side and the inner cavity of the sealing groove (21) is rectangular, and a matching sealing block (22) is inserted into the rectangular inner cavity, and the sealing block (22) is connected to the sealing groove (21) in a left-right sliding manner, and a plurality of groups of second return springs (23) are evenly provided between the side wall of the sealing groove (21) and the right end face of the sealing block (22); the second return spring (23) is in a compressed state and the left end face of the sealing block (22) is in close contact with the circumference of the low-temperature disk (4); the rear end face of the sealing block (22) is in close contact with the end face of the opening of the low-temperature disk accommodating groove (18); the circumference of the low-temperature disk (4) and the inner cavity of the sealing groove (21) form a variable closed space (24).

7. The dehumidification device for a box-type substation according to claim 6, characterized in that: The right opening of the top wall of each group of low-temperature disk accommodating grooves (18) is chamfered (28), and a plurality of water absorption holes (29) are vertically arranged along the inclined surface of the chamfer (28). The lower end of the water absorption hole (29) is open, and the upper end is connected in sequence through the water absorption pipe (30). The rightmost opening of the water absorption pipe (30) is connected to the variable closed space (24). A third one-way valve (25) is also provided at the rightmost opening of the water absorption pipe (30), and the third one-way valve (25) is unidirectionally conducted to the inside of the variable closed space (24); the two adjacent groups of low-temperature disk accommodating grooves (18) are connected through corresponding drainage holes (27), and a fourth one-way valve (26) is provided on the upper part of each group of drainage holes (27); the bottom wall of the lower low-temperature disk accommodating groove (18) is connected to the outside of the low-pressure evaporator (6) through the corresponding fourth one-way valve (26); the conduction direction of the fourth one-way valve (26) is unidirectionally conducted downward.

8. The dehumidification device for a box-type substation according to claim 7, characterized in that: The lower end of the drainage hole (27) is connected to the inner cavity of the high-pressure condensation box (7), a condensation coil (8) is provided at the lower part of the inner cavity of the high-pressure condensation box (7), and a drainage through hole (31) is provided on the side wall of the upper part of the inner cavity of the high-pressure condensation box (7).

9. The dehumidification device for a box-type substation according to claim 1, characterized in that: The air supply mechanism (5) may be an electronic fan.

10. The dehumidification device for a box-type substation according to claim 3, characterized in that: The capillary tube (10) is spiral-shaped, and the two ends of the capillary tube (10) are respectively connected to the right outlet of the condensing coil (8) and the right inlet of the evaporating coil (9).

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