Control method and device for preventing condensation of outdoor cabinet of transformer substation

Abstract

The invention relates to the technical field of transformer substation outdoor cabinet maintenance, and provides a transformer substation outdoor cabinet condensation prevention device which comprises a frame body fixedly installed on the bottom side of a power transformation cabinet so as to assist the power transformation cabinet to be away from the ground and reduce damp gas entering the power transformation cabinet. A temperature adjusting pipe used for adjusting the temperature is arranged on the outer wall of the power transformation cabinet in a surrounding mode, clear water circulates in the temperature adjusting pipe, heat is transmitted and absorbed by circulating the clear water with different temperatures, and the temperature of the power transformation cabinet is adjusted. Circulating water is gradually cooled or heated by synchronizing the change of external temperature, so that the external temperature is closer to the temperature of the cabinet body, and the temperature is controlled at the critical point of condensation, so that the condensation in the cabinet body caused by the temperature difference between the external and the power transformation cabinet is greatly reduced; therefore, the operation of the power transformation cabinet is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of maintenance of outdoor cabinets of transformer substations, and in particular to a control method and device for preventing condensation of outdoor cabinets of transformer substations. Background Art

[0002] Substation outdoor cabinets are mainly used to install various cables, optical cables, network cables, etc. They are the intermediate link between outdoor electrical primary equipment and indoor secondary equipment. They are used to realize various functions of the substation and ensure the normal supply of electricity.

[0003] Among them, the outdoor cabinets of the substation require a relatively dry operating environment. Many outdoor cabinets of the substation are installed outdoors. In the autumn and winter seasons, due to the cold weather and high humidity, condensation is easily formed inside the outdoor cabinets of the substation, that is, condensed into water droplets. These condensed water droplets will cause the secondary wiring to become damp and short-circuit, thereby causing equipment malfunction and endangering the safe operation of the power system.

[0004] Existing anti-condensation devices mostly use rapid temperature changes in cabinets to avoid condensation, but sudden rapid temperature changes may cause condensation directly in the temperature change work due to the high temperature emitted by the internal equipment, resulting in poor stability of the temperature change work. Therefore, a control method and device for preventing condensation in outdoor cabinets of substations is needed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a control method and device for preventing condensation in an outdoor cabinet of a substation, aiming to solve the problem of the existing anti-condensation method in avoiding condensation caused by its own work.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A condensation prevention device for an outdoor cabinet of a substation, comprising:

[0008] A frame, wherein the frame is fixedly mounted on the bottom side of the transformer cabinet to help the transformer cabinet stay away from the ground and reduce the entry of humid air into the transformer cabinet. A thermostatic tube for adjusting the temperature is arranged around the outer wall of the transformer cabinet. Clean water circulates inside the thermostatic tube to transfer and absorb heat by circulating clean water of different temperatures, so as to adjust the temperature of the transformer cabinet and reduce the condensation inside the transformer cabinet caused by excessive temperature difference with the outside;

[0009] Screw rods 1, the number of the screw rods 1 is four, and they are rotatably connected to the four corners of the transformer cabinet, the rear side of the screw rods 1 passes through the rear side of the transformer cabinet, and is fixedly connected to a gear 1, and the four gears 1 are connected by a toothed chain to synchronize the rotation of the four screw rods 1, and the transmission isolation folding plate is unfolded to isolate the equipment inside the transformer cabinet from the inner wall of the transformer cabinet, thereby reducing the heat emitted by the equipment during operation from being conducted to the inner wall of the transformer cabinet;

[0010] A shell, the shell is installed at the left end of the top side of the thermostatic tube, the interior of the shell is rotatably connected to a turbine for conveying clean water, the input end of the shell is connected to the output end of the thermostatic tube, and the output end of the shell is connected to the input end of the thermostatic tube through a thermostatic unit;

[0011] A volute, wherein an air intake fan for extracting and drawing air is rotatably connected inside the volute, and the air intake fan is driven by a motor installed at the rear side of the volute. An air inlet for air intake and ventilation is fixedly connected to the bottom left end of the outer wall of the transformer cabinet, and the air inlet is connected to the output end of the volute through a pipeline, and a filter cartridge is installed at the input end of the air inlet;

[0012] A support frame, the left and right ends of the rear side of the support frame are rotatably connected with gear two, the front sides of the turbine and the intake fan are fixedly connected to gear two, the middle end of the support frame is connected to gear three through a sliding member, the gear three is lifted up by a lifting member on the bottom side, so that gear three is connected to the adjacent sides of the two gears two for meshing, and the lifting member and one of the gear one are synchronously driven by motor two.

[0013] Preferably, the isolation folding plate includes a displacement frame located inside the substation cabinet, the four corners of the displacement frame are threadedly connected to the outer wall of screw rod one, a plurality of isolation plates are arranged on the rear side of the displacement frame, and the plurality of isolation plates, the frontmost isolation plate and the displacement frame, and the rearmost isolation plate and the rear side of the inner wall of the substation cabinet are all connected by folding films.

[0014] Preferably, the temperature control unit includes a water cooler and a water heater located on the bottom side of the shell, and electronic reversing valves for controlling the direction of water flow are provided at the left and right ends of the water cooler and the water heater. The input ends of the water cooler and the water heater are connected to the input end of the shell through the electronic reversing valve, and the output ends of the water cooler and the water heater are connected to the input end of the temperature control tube through the electronic reversing valve.

[0015] Preferably, the filter cylinder includes a cylinder body fixedly connected to the input end of the volute, the input end of the cylinder body is fixedly connected to a dust blocking net, the interior of the cylinder body is slidably connected to a ventilation box, the interior of the ventilation box is provided with a lime bag placement groove, and the left and right sides of the ventilation box are provided with air vents connected to the lime bag placement groove.

[0016] Preferably, the sliding member includes a slider slidably connected to the inner wall of the middle end of the support frame, the rear side of the gear three is rotationally connected to the front side of the slider, and the top side of the slider is connected to the top side of the inner wall of the middle end of the support frame through a spring.

[0017] Preferably, the lifting member includes a slide rail fixedly connected to the bottom end of the rear side of the frame body, the rear side of the slide rail is rotatably connected to screw rod 2, the right end of screw rod 2 is connected to one of gear rod 1 through two mutually meshing bevel gears, one of gear rod 1 is driven to rotate by the driving end of motor 2, and a lifting block is provided on the bottom side of the slider, the bottom side thread of the lifting block is internally connected to the outer wall of screw rod 2, and the front side of the lifting block is slidably connected to the slide rail.

[0018] Preferably, the top arc structure of the lifting block abuts against the bottom arc structure of the sliding block.

[0019] Preferably, it further comprises a plurality of cabinet doors arranged on the front side of the frame, the top ends of the cabinet doors are provided with air outlets for air ventilation, and the inner walls of the cabinet doors are installed with temperature sensors.

[0020] Preferably, the angle between any two adjacent isolation plates is not less than 30° and not more than 180°.

[0021] A control method for preventing condensation in an outdoor cabinet of a substation comprises the following steps:

[0022] Step 1: Use a temperature sensor to monitor the cabinet temperature and external ambient temperature of the substation;

[0023] Step 2: When the temperature sensor detects that the external temperature rises or drops significantly, the isolation folding plate is unfolded and the cabinet temperature change work of the substation cabinet is started synchronously;

[0024] Step 3: The turbine starts circulating clean water, so that the clean water is cooled or heated in any one of the water cooler or water heater, and the cabinet of the substation is heated or cooled according to the external temperature change through the thermostatic tube;

[0025] Step 4: During the temperature change process of the circulating water, the external temperature is given priority, and the circulating water is gradually cooled or heated up in synchronization with the change of the external temperature, so that the external temperature and the temperature of the cabinet are closer and closer, and the temperature is controlled at the critical point of condensation;

[0026] Step 5: After the external temperature becomes stable, stop the temperature change operation to reduce energy consumption.

[0027] Working principle: The normal state is monitored by the temperature sensor, which is responsible for monitoring the cabinet temperature of the substation and the external temperature. When it is detected that the external temperature rises or drops sharply, the motor 2 is started to drive the gear 1 to rotate, so that the gear 1 connected to the screw 1 is repeatedly driven by the tooth chain to rotate other gears, so that the four screws rotate synchronously, and the displacement frame connected to it is driven to move. The displaced displacement frame pulls the isolation folding plate connected to the rear side to unfold the isolation folding plate. The isolation plate used for isolation covers the top, bottom and left and right sides of the inner wall of the substation cabinet to isolate the equipment inside the substation cabinet. At this time, the speed of the motor 1 is slowed down, and the rotation of the gear 1 also drives the screw 2 to rotate through two meshing bevel gears, so that the screw 2 drives the lifting block connected to it to move, so that the arc on the top side of the lifting block is on the arc structure on the bottom side of the slider, thereby gradually lifting the slider connected to the gear 3 and compressing the spring. Under the premise of slowing down the speed of the first machine, the speed of the air intake fan driven by the first motor and connected to one of the gears 2 is slowed down, so that the gear 3 can be stuck between the two gears 2, and the other gear 2 connected to the turbine can be driven. At this time, the first motor resumes its speed, and the driven turbine starts to circulate the circulating water, so that the clean water is successively input from the inside of the shell to any one of the water cooler and the water heater to heat or cool the circulating water, so that the circulating water enters the thermostat, adjusts the temperature of the cabinet of the transformer cabinet, and then returns to the shell through the input end of the thermostat to recirculate. In the temperature change process of the circulating water, the external temperature is first referred to, and the circulating water is gradually cooled or heated synchronously with the change of the external temperature, so that the external temperature and the temperature of the cabinet are closer and closer, and the temperature is controlled at the critical point of condensation, so as to avoid the sudden heating of the thermostat causing the cabinet to absorb or release heat due to the circulating water to produce condensation. After the outside temperature stops changing, the circulating water's circulating temperature changing work is stopped, and Motor 2 reverses to reset the isolation folding plate and the jacking block. Motor 1 slows down again, and Gear 3 follows the slider that has lost its support and slides down under the action of the compression spring and the meshing transmission of one of the gears 2, disengaging from the adjacent side of the two gears 2, so that the other gear 2 is no longer meshed. Gear 3 is moved by one of the gears 2 and no longer participates in the meshing. Motor 1 resumes its speed to make the intake fan rotate to intake air. External air enters the volute along the filter cartridge in turn, and then enters the air inlet connected to the substation cabinet through the pipe along the volute to cool the internal equipment of the substation cabinet. After the external air enters the air intake cylinder, it is first blocked by the dust blocking net, and passes through the ventilation box with lime bags to absorb moisture in the air, and the air entering the substation cabinet is dried to further reduce the possibility of condensation inside the substation cabinet.

[0028] The present invention provides a control method and device for preventing condensation in an outdoor cabinet of a substation. It has the following beneficial effects:

[0029] 1. The present invention gradually cools down or heats up the circulating water in sync with the change of the external temperature, so that the external temperature and the temperature of the cabinet are closer and closer, and the temperature of the transformer cabinet is controlled at the critical point of condensation. This greatly reduces the condensation inside the cabinet caused by the temperature difference between the outside and the transformer cabinet, which affects the internal equipment of the cabinet, and makes the operation of the transformer cabinet more stable.

[0030] 2. The present invention has the ability to cool down the internal equipment of the transformer cabinet under normal conditions, and can dry the air introduced into the cabinet for ventilation. In addition, the temperature control method of the thermostatic tube can avoid the phenomenon of condensation in the cabinet due to heat absorption or heat release of circulating water caused by sudden heating of the thermostatic tube, thereby preventing condensation caused by the operation of the equipment itself.

[0031] 3. The present invention can quickly stop the temperature change operation after the external temperature tends to be stable by monitoring the permanent cabinet temperature and the external temperature, so as to reduce the additional energy consumption caused by the temperature change operation of the equipment and reduce the energy expenditure for anti-condensation maintenance generated by the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A perspective view of the present invention;

[0033] Figure 2 It is a schematic diagram of the rear structure of the present invention;

[0034] Figure 3 It is a schematic diagram of the position of the temperature sensor of the present invention;

[0035] Figure 4 It is a schematic diagram of the position of the screw rod 1 of the present invention;

[0036] Figure 5 It is a structural schematic diagram of the temperature regulating tube of the present invention;

[0037] Figure 6 It is a schematic diagram of the position of the air inlet of the present invention;

[0038] Figure 7 It is a structural schematic diagram of the temperature regulating tube and the transformer cabinet of the present invention;

[0039] Figure 8 It is a structural schematic diagram of the isolation plate of the present invention;

[0040] Fig. 9 It is a structural schematic diagram of the gear 2 of the present invention;

[0041] Fig.10 It is a structural schematic diagram of the support frame of the present invention;

[0042] Fig.11 It is a structural schematic diagram of the slide rail of the present invention;

[0043] Fig.12 It is a schematic diagram of the cylinder structure of the present invention.

[0044] Among them, 1. frame; 2. transformer cabinet; 3. temperature control tube; 4. screw one; 5. displacement frame; 6. isolation plate; 7. folding film; 8. gear one; 9. tooth chain; 10. water cooler; 11. water heater; 12. shell; 13. turbine; 14. electronic reversing valve; 15. air inlet; 16. volute; 17. intake fan; 18. support frame; 19. gear two; 20. slider; 21. gear three; 22. slide rail; 23. screw two; 24. lifting block; 25. cylinder; 26. ventilation box; 27. dust screen; 28. temperature sensor. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Example:

[0047] As one aspect of the present application, an embodiment of the present invention provides a condensation prevention device for an outdoor cabinet of a substation, comprising:

[0048] Please see attached Figure 1 -Attached Figure 3 , frame 1, frame 1 is fixedly installed on the bottom side of the transformer cabinet 2 to help the transformer cabinet 2 stay away from the ground and reduce the entry of humid air into the transformer cabinet 2. A thermostatic tube 3 for adjusting the temperature is arranged around the outer wall of the transformer cabinet 2. Clean water circulates inside the thermostatic tube 3 to transfer and absorb heat by circulating clean water of different temperatures to adjust the temperature of the transformer cabinet 2 and reduce the condensation inside the transformer cabinet 2 caused by excessive temperature difference with the outside. A plurality of cabinet doors are arranged on the front side of the frame 1. An air outlet for air ventilation is opened at the top of the cabinet door. A temperature sensor 28 for monitoring the cabinet temperature and external temperature of the transformer cabinet 2 is installed on the inner wall of the cabinet door. The normal state is monitored by the temperature sensor 28, which is responsible for monitoring the cabinet temperature and external temperature of the transformer cabinet 2. When a sharp rise or drop in the external temperature is detected, the temperature sensor 28 will send an electrical signal to the outside to enable the cabinet temperature change and anti-condensation work.

[0049] Please see attached Figure 3 , Attachment Figure 4 and attached Figure 8, screw rod 4, the number of screw rod 4 is four, and they are rotatably connected to the four corners of the transformer cabinet 2 respectively, the rear side of screw rod 4 passes through the rear side of the transformer cabinet 2, and is fixedly connected with gear 8, the four gears 8 are connected by a toothed chain 9, so as to synchronize the rotation of the four screw rods 4, and the transmission isolation folding plate is unfolded to isolate the equipment inside the transformer cabinet 2 from the inner wall of the transformer cabinet 2, so as to reduce the heat emitted by the equipment from being conducted to the inner wall of the transformer cabinet 2;

[0050] The isolation folding plate is composed of a displacement frame 5 located inside the transformer cabinet 2. The four corners of the displacement frame 5 are threadedly connected to the outer wall of the screw rod 4. A plurality of isolation plates 6 are arranged on the rear side of the displacement frame 5. The isolation plates 6 are divided into two layers. The side of the isolation plate 6 close to the inner wall of the transformer cabinet 2 is made of a material with good thermal insulation conductivity, such as a polyurethane foam board, and the side close to the equipment in the cabinet is made of porous foam to avoid condensation on the surface. The plurality of isolation plates 6, the frontmost isolation plate 6 and the displacement frame 5, and the rearmost isolation plate 6 and the rear side of the inner wall of the transformer cabinet 2 are all connected by folding films 7. The angle between any two adjacent isolation plates 6 is not less than 30° and not more than 180°, so that the plurality of isolation plates 6 can be combined and folded in the process of the displacement frame 5 moving backward and resetting after being unfolded;

[0051] Specifically, when the four screw rods 4 rotate synchronously, the displacement frame 5 connected to the transmission is displaced, and the displaced displacement frame 5 pulls the isolation folding plate connected to the rear side to unfold the isolation folding plate, and the isolation plate 6 used for isolation covers the top, bottom and left and right sides of the inner wall of the substation cabinet 2, isolates the equipment inside the substation cabinet 2, reduces the heat generated by the equipment during operation and is conducted to the cabinet body of the substation cabinet 2, so as to stabilize the subsequent cabinet body temperature change and anti-condensation work.

[0052] Please refer to the attached Figure 3 , Attachment Figure 5 and attached Figure 7 , shell 12, the shell 12 is installed at the left end of the top side of the thermostatic tube 3, the shell 12 is rotatably connected to a turbine 13 for conveying clean water, the input end of the shell 12 is connected to the output end of the thermostatic tube 3, and the output end of the shell 12 is connected to the input end of the thermostatic tube 3 through a thermostatic unit; the thermostatic unit is composed of a water cooler 10 and a water heater 11 located at the bottom side of the shell 12, and the left and right ends of the water cooler 10 and the water heater 11 are provided with electronic reversing valves 14 for controlling the direction of water flow, the input ends of the water cooler 10 and the water heater 11 are connected to the input end of the shell 12 through the electronic reversing valve 14, and the output ends of the water cooler 10 and the water heater 11 are connected to the input end of the thermostatic tube 3 through the electronic reversing valve 14.

[0053] Specifically, the electronic reversing valve 14 is used to change the flow direction of the circulating water, so that the clean water enters the water cooler 10 for cooling or the water heater 11 for heating according to the current situation. When the turbine 13 starts to circulate the circulating water, the turbine 13 will stir and pressurize the clean water, so that the clean water is sequentially input from the inside of the shell 12 to any one of the water cooler 10 and the water heater 11 for heating or cooling the circulating water, so that the circulating water enters the thermostatic tube 3 to adjust the temperature of the cabinet of the transformer cabinet 2, and then returns to the shell 12 through the input end of the thermostatic tube 3 to circulate again.

[0054] Please see attached Figure 6 , Attachment Fig. 9 , and attached Fig.12 , volute 16, the interior of volute 16 is rotatably connected with an air intake fan 17 for extracting and drawing air, and the air intake fan 17 is driven by a motor installed at the rear side of volute 16, and an air inlet 15 for air intake and ventilation is fixedly connected to the bottom end of the left side of the outer wall of the transformer cabinet 2, and the air inlet 15 is connected to the output end of the volute 16 through a pipeline, and a filter cartridge is installed at the input end of the air inlet 15; the filter cartridge is mainly composed of a cylinder 25 fixedly connected to the input end of the volute 16, and a dust blocking net 27 is fixedly connected to the input end of the cylinder 25, and a ventilation box 26 is slidably connected to the interior of the cylinder 25, and a lime bag placement groove is provided inside the ventilation box 26, and air vents connected to the lime bag placement groove are opened on both sides of the left and right sides of the ventilation box 26;

[0055] Specifically, the lime bag placement slot is used to place lime bags that absorb moisture in the air, and the air permeability on the surface of the ventilation box 26 is used to increase the contact area with the lime bags in the lime bag placement slot, so as to reduce the humidity of the air introduced into the substation 2 for cooling the equipment when the volute 16 takes in air, and further reduce the possibility of condensation inside the substation 2. When the air intake fan 17 is rotated to take in air, the external air enters the volute 16 along the filter cylinder in turn, and then enters the air inlet 15 connected to the substation 2 through the pipeline along the volute 16 to cool the internal equipment of the substation 2. After the external air enters the air intake cylinder, it is first blocked by the dust blocking net 27, and passes through the ventilation box 26 where the lime bags are placed, absorbing moisture in the air, and drying the air entering the substation 2.

[0056] Please see attached Figure 4 , Attachment Fig.10 and attached Fig.11, support frame 18, the left and right ends of the rear side of the support frame 18 are rotatably connected with gear 2 19, the front sides of the turbine 13 and the intake fan 17 are fixedly connected to gear 2 19, the middle end of the support frame 18 is connected to gear 3 21 through a sliding member, and the gear 3 21 is lifted by the lifting member on the bottom side, so that the gear 3 21 is connected to the adjacent side of the two gears 2 19 for meshing, and the lifting member and one of the gears 1 8 are synchronously driven by the motor 2, and the sliding member is mainly composed of a slider 20 slidably connected to the inner wall of the middle end of the support frame 18, and the lifting member is fixedly connected to the bottom end of the rear side of the frame body 1 by a slide rail 22, and the rear side of the slide rail 22 is rotatably connected The bottom side of the connected screw rod 23 and the slider 20 is provided with a lifting block 24, the rear side of the gear three 21 is rotatably connected to the front side of the slider 20, the top side of the slider 20 is connected to the top side of the inner wall of the middle end of the support frame 18 through a spring, the right end of the screw rod 23 is connected to one of the gears 1 8 through two mutually meshing bevel gears, one of the gears 1 8 is driven to rotate by the driving end of the motor 2, the bottom side thread of the lifting block 24 is connected to the outer wall of the screw rod 23, the front side of the lifting block 24 is slidably connected to the slide rail 22, and the top side arc structure of the lifting block 24 is abutted against the bottom side arc structure of the slider 20.

[0057] Specifically, when the cabinet temperature change and condensation prevention work of the transformer cabinet 2 is performed, the gear 1 8 driven by the motor 2 also drives the screw 23 to rotate through two meshing bevel gears, so that the screw 23 drives the jacking block 24 connected thereto to move, so that the arc of the top side of the jacking block 24 is on the arc structure on the bottom side of the slider 20, thereby gradually jacking up the slider 20 connected to the gear 3 21 and compressing the spring. Under the premise of slowing down the speed of the motor 1, the speed of the intake fan 17 driven by the motor 1 and connected to one of the gears 2 19 is slowed down, so that the gear 3 21 can be stuck between the two gears 2 19, so that the other gear 2 19 connected to the turbine 13 can be driven. At this time, the motor 1 resumes its speed, and the driven turbine 13 starts to circulate the circulating water, so that the clean water is successively input from the inside of the shell 12 to the water cooling Any one of the machine 10 and the water heater 11 performs heating or cooling operation on the circulating water, so that the circulating water enters the temperature regulating tube 3, and the temperature of the cabinet of the substation cabinet 2 is adjusted. After the outside temperature stops changing, the temperature change and anti-condensation work is stopped, and the reversed motor 2 drives the gear 1 8 to drive the screw 23 to rotate in the opposite direction, and the motor 1 slows down again. The gear 3 21 follows the slider 20 that has lost its support and slides down under the action of the compression spring and the meshing transmission of one of the gears 2 19, disengaging from the adjacent side of the two gears 2 19, so that the other gear 2 19 is no longer meshed, and the gear 3 21 is moved by one of the gears 2 19 and no longer participates in the meshing, so that the device returns to the working state of only air intake cooling the internal equipment of the substation cabinet 2, reducing the power consumption generated by the temperature change and anti-condensation work.

[0058] Based on the above-mentioned anti-condensation device for outdoor cabinets of substations, as another aspect of the present application, please refer to the attached Figure 1 -Attached Fig.12 , a control method for preventing condensation of an outdoor cabinet of a substation, comprising the following steps:

[0059] Step 1: Use the temperature sensor 28 to monitor the cabinet temperature of the transformer cabinet 2 and the external environment temperature;

[0060] Step 2: When the temperature sensor 28 detects that the external temperature rises or drops significantly, the isolation folding plate is unfolded and the cabinet temperature change work of the transformer cabinet 2 is started synchronously;

[0061] Step 3: The turbine 13 starts circulating clean water, so that the clean water is cooled or heated in any one of the water cooler 10 and the water heater 11, and the cabinet of the substation cabinet 2 is heated or cooled through the thermostatic tube 3 according to the external temperature change;

[0062] Step 4: During the temperature change process of the circulating water, the external temperature is given priority, and the circulating water is gradually cooled or heated up in synchronization with the change of the external temperature, so that the external temperature and the temperature of the cabinet are closer and closer, and the temperature is controlled at the critical point of condensation;

[0063] Step 5: After the external temperature becomes stable, stop the temperature change operation to reduce energy consumption.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A condensation prevention device for outdoor cabinets in a substation, characterized in that: include: A frame (1), wherein the frame (1) is fixedly mounted on the bottom side of a transformer cabinet (2) to help the transformer cabinet (2) stay away from the ground and reduce the amount of humid air entering the transformer cabinet (2); a temperature regulating pipe (3) for regulating the temperature is arranged around the outer wall of the transformer cabinet (2); clean water circulates inside the temperature regulating pipe (3) to transfer and absorb heat by circulating clean water of different temperatures, thereby regulating the temperature of the transformer cabinet (2) and reducing the occurrence of condensation inside the transformer cabinet (2) due to a large temperature difference with the outside; Screw rods (4), the number of the screw rods (4) is four, and they are rotatably connected to the four corners of the transformer cabinet (2), the rear side of the screw rods (4) passes through the rear side of the transformer cabinet (2), and is fixedly connected to a gear (8), the four gears (8) are connected by a toothed chain (9), so as to synchronize the rotation of the four screw rods (4), and the transmission isolation folding plate is unfolded to isolate the equipment inside the transformer cabinet (2) from the inner wall of the transformer cabinet (2), so as to reduce the heat emitted by the equipment during operation and conduct it to the inner wall of the transformer cabinet (2); A shell (12), the shell (12) being mounted on the left end of the top side of the temperature regulating tube (3), the shell (12) being rotatably connected to a turbine (13) for conveying clean water, the input end of the shell (12) being connected to the output end of the temperature regulating tube (3), and the output end of the shell (12) being connected to the input end of the temperature regulating tube (3) via a temperature regulating unit; A volute (16), wherein the interior of the volute (16) is rotatably connected to an air intake fan (17) for extracting and drawing air, wherein the air intake fan (17) is driven by a motor installed at the rear side of the volute (16), and an air inlet (15) for air intake and ventilation is fixedly connected to the bottom end of the left side of the outer wall of the transformer cabinet (2), wherein the air inlet (15) is connected to the output end of the volute (16) through a pipeline, and a filter cartridge is installed at the input end of the air inlet (15); A support frame (18), the left and right ends of the rear side of the support frame (18) are rotatably connected to gear 2 (19), the front sides of the turbine (13) and the intake fan (17) are fixedly connected to gear 2 (19), the middle end of the support frame (18) is connected to gear 3 (21) through a sliding member, the gear 3 (21) is lifted up by a lifting member on the bottom side, so that gear 3 (21) is connected to the adjacent sides of the two gears 2 (19) for meshing, and the lifting member and one of the gears 1 (8) are synchronously driven by motor 2.

2. A condensation prevention device for outdoor cabinets of a substation according to claim 1, characterized in that: The isolation folding plate comprises a displacement frame (5) located inside the transformer cabinet (2), the four corners of the displacement frame (5) are all threadedly connected to the outer wall of the screw rod (4), a plurality of isolation plates (6) are arranged on the rear side of the displacement frame (5), and the plurality of isolation plates (6), the frontmost isolation plate (6) and the displacement frame (5), and the rearmost isolation plate (6) and the rear side of the inner wall of the transformer cabinet (2) are all connected via folding films (7).

3. The condensation prevention device for outdoor cabinets of a substation according to claim 1, characterized in that: The temperature control unit comprises a water cooler (10) and a water heater (11) located at the bottom side of the shell (12); electronic reversing valves (14) for controlling the direction of water flow are arranged at the left and right ends of the water cooler (10) and the water heater (11); the input ends of the water cooler (10) and the water heater (11) are connected to the input end of the shell (12) through the electronic reversing valve (14); and the output ends of the water cooler (10) and the water heater (11) are connected to the input end of the temperature control tube (3) through the electronic reversing valve (14).

4. The condensation prevention device for outdoor cabinets of a substation according to claim 1, characterized in that: The filter cartridge comprises a barrel (25) fixedly connected to the input end of the volute (16); the input end of the barrel (25) is fixedly connected to a dust blocking net (27); the interior of the barrel (25) is slidably connected to a ventilation box (26); the interior of the ventilation box (26) is provided with air vents connected to a lime bag placement slot on both the left and right sides of the ventilation box (26).

5. The condensation prevention device for outdoor cabinets of a substation according to claim 1, characterized in that: The sliding member comprises a slider (20) slidably connected to the inner wall of the middle end of the support frame (18); the rear side of the gear three (21) is rotationally connected to the front side of the slider (20); and the top side of the slider (20) is connected to the top side of the inner wall of the middle end of the support frame (18) via a spring.

6. A condensation prevention device for outdoor cabinets of a substation according to claim 5, characterized in that: The lifting member comprises a slide rail (22) fixedly connected to the bottom end of the rear side of the frame body (1); the rear side of the slide rail (22) is rotatably connected to a screw rod 2 (23); the right end of the screw rod 2 (23) is connected to one of the gear rods 1 (8) via two mutually meshing bevel gears; one of the gear rods 1 (8) is driven to rotate via the driving end of the motor 2; a lifting block (24) is provided on the bottom side of the slider (20); the bottom side of the lifting block (24) is internally connected to the outer wall of the screw rod 2 (23) through a thread; the front side of the lifting block (24) is slidably connected to the slide rail (22).

7. A condensation prevention device for outdoor cabinets of a substation according to claim 6, characterized in that: The top arc structure of the lifting block (24) abuts against the bottom arc structure of the sliding block (20).

8. The condensation prevention device for outdoor cabinets of a substation according to claim 1, characterized in that: It also comprises a plurality of cabinet doors arranged on the front side of the frame (1), the top ends of the cabinet doors being provided with air outlets for ventilation, and the inner walls of the cabinet doors being installed with temperature sensors (28).

9. The condensation prevention device for outdoor cabinets of a substation according to claim 2, characterized in that: The angle between any two adjacent isolation plates (6) is not less than 30° and not more than 180°.

10. A control method for preventing condensation in an outdoor cabinet of a substation, using a device for preventing condensation in an outdoor cabinet of a substation as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Use a temperature sensor (28) to monitor the cabinet temperature of the transformer cabinet (2) and the external environment temperature; Step 2: When the temperature sensor (28) detects that the external temperature has risen or dropped significantly, the isolation folding plate is unfolded and the cabinet temperature change work of the transformer cabinet (2) is started synchronously; Step 3: The turbine (13) starts circulating clean water, causing the clean water to cool down or heat up in either the water cooler (10) or the water heater (11), and heating or cooling the cabinet of the transformer cabinet (2) according to the change of external temperature through the thermostatic tube (3); Step 4: During the temperature change process of the circulating water, the external temperature is given priority, and the circulating water is gradually cooled or heated up in synchronization with the change of the external temperature, so that the external temperature and the temperature of the cabinet are closer and closer, and the temperature is controlled at the critical point of condensation; Step 5: After the external temperature becomes stable, stop the temperature change operation to reduce energy consumption.

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