A self-controlled temperature and anti-condensation high-voltage switch cabinet

Abstract

The present invention discloses a self-controlling temperature and anti-condensation high-voltage switch cabinet, comprising a cabinet, a dehumidification mechanism, an exhaust mechanism and an air inlet mechanism, wherein the cabinet comprises a cabinet door, a back plate and a side plate, and the dehumidification mechanism comprises a refrigeration shell, a heating shell, a semiconductor refrigeration sheet, a first linear actuator, a second linear actuator and a condensed water discharge mechanism, wherein the first linear actuator drives the refrigeration shell to fit or stay away from the side plate. The dehumidification mechanism can dehumidify and cool the air inside the cabinet, and the air is first condensed and cooled, and then temperature-controlled and heated before being transported into the cabinet, so as to avoid condensation when the air in the cabinet is cold; the first linear actuator drives the refrigeration shell to fit the side plate, so as to quickly cool the side plate, and further improve the cooling efficiency inside the cabinet; the condensed water in the cold air channel can be discharged by the condensed water discharge mechanism, so as to ensure that the refrigeration shell outputs dry cold air.

Description

Technical Field

[0001] The invention relates to the technical field of electrical cabinets, in particular to a self-controlling temperature and anti-condensation high-voltage switch cabinet. Background Art

[0002] High-voltage switchgear is one of the more important electrical equipment in the power system. Its main function is to distribute power supply to equipment and loads, as well as to control and protect the normal operation of the system. High-voltage switchgear is widely used in various fields such as modern industrial production, people's livelihood electricity and urban construction.

[0003] High-voltage switchgear is usually composed of various functional modules such as circuit breakers, isolating switches, load switches, power contactors, leakage protectors, fuses, grounding switches, trolley devices, current transformers, etc. These modules generate a large amount of heat energy during operation, which can easily lead to an increase in the temperature inside the high-voltage switchgear. In order to reduce the temperature inside the switchgear, the existing switchgear is provided with vents on the two opposite walls. The switchgear is equipped with exhaust fans at the vents. The exhaust fans on one side discharge the hot air inside the switchgear to the outside, and the exhaust fans on the other side transport the outside air into the switchgear to speed up the air circulation inside the switchgear, thereby reducing the temperature inside the switchgear. Then, when the ambient temperature outside the high-voltage switchgear is too high, it is difficult to achieve rapid cooling inside the cabinet, and when the ambient humidity outside the high-voltage switchgear is too high, it is difficult to discharge the water vapor inside the cabinet outside the cabinet through air convection inside the switchgear, and condensation inside the high-voltage switchgear is very likely to occur, which poses a serious threat to the safe operation of the high-voltage switchgear. Summary of the invention

[0004] Based on this, it is necessary to provide a self-controlling temperature and anti-condensation high-voltage switchgear to address the above technical problems.

[0005] In order to achieve the above object, the present invention provides a self-controlling temperature and anti-condensation high-voltage switchgear, comprising a cabinet body, wherein the cabinet body comprises a cabinet door at the front end, a back plate at the rear end, and side plates at both sides, and at least one side plate is provided with a dehumidification mechanism;

[0006] The dehumidification mechanism includes a refrigeration shell, a heating shell, a semiconductor refrigeration sheet, a first linear actuator and a second linear actuator. The first linear actuator is installed on the cabinet, and the first linear actuator drives the refrigeration shell to fit or stay away from the side plate. The refrigeration shell is fixedly connected to the heating shell. A plurality of semiconductor refrigeration sheets are arranged between the refrigeration shell and the heating shell. The cold end of the semiconductor refrigeration sheet is connected to the refrigeration shell, and the hot end of the semiconductor refrigeration sheet is connected to the heating shell. A serpentine cold air channel is arranged in the refrigeration shell. The serpentine cold air channel can increase the air flow stroke and improve the air Heat exchange effect; a movable partition is installed in the heating shell in a sliding seal, and the movable partition divides the inner cavity of the heating shell into an independent heat dissipation cavity and a cold air heating cavity. The second linear actuator is installed in the heat dissipation cavity and the output end is connected to the movable partition. The second linear actuator drives the movable partition to slide in the heating shell to adjust the volume of the cold air heating cavity. When the cold air heating cavity is at the minimum volume, there is no semiconductor refrigeration plate on the outside. The heating shell is provided with a heat dissipation port connected to the heat dissipation cavity. The output end of the cold air channel is connected to the input end of the cold air heating cavity, and the output end of the cold air heating cavity is connected to the cabinet.

[0007] It also includes an exhaust mechanism and an air inlet mechanism. The exhaust mechanism includes an exhaust shell connected to the input end of the cold air channel and the cabinet, and an exhaust fan is installed in the exhaust shell; the air inlet mechanism includes an air inlet shell connected to the heat dissipation cavity, and an air inlet fan is installed in the air inlet shell.

[0008] Preferably, the cold air channel includes a plurality of vertical channels connected in sequence; the dehumidification mechanism also includes a condensate discharge mechanism, which includes a drive motor, a screw, a connector, a wiper frame, a condensate collection box, a lower baffle, a pad, an upper baffle, and a compression spring. A screw and a wiper frame are provided in each vertical channel, the screw is rotatably and sealedly connected to the top of the refrigeration shell, the connector is threadedly mounted on the screw, the wiper frame is sleeved on the screw and fixedly connected to the connector, and the wiper frame contacts and cooperates with the inner wall of the vertical channel; a drain port is provided at the bottom of the refrigeration shell and directly below the upper partition. Water guiding oblique blocks are provided on the inner wall of the bottom end of the refrigeration shell and on both sides of the drain outlet. The condensed water collection box is fixedly installed on the bottom of the refrigeration shell and is connected with the drain outlet. A lower baffle is installed with a sliding seal in the drain outlet. The lower end of the lower baffle is connected to the condensed water collection box through a compression spring, and the upper end of the lower baffle is fixedly connected to the upper baffle through a gasket. The spacing between the lower baffle and the upper baffle is smaller than the depth of the drain outlet. The upper baffle can cooperate with the drain outlet sliding seal, and the wiper frame can contact and cooperate with the upper baffle to press the lower baffle down to below the drain outlet; the driving motor drives each screw to rotate so that each wiper frame moves synchronously.

[0009] Preferably, the drive motor is fixedly mounted on the top of the refrigeration shell via a bracket, the output end of the drive motor is transmission-connected to one of the screws via a coupling, each screw is provided with a gear, adjacent gears are meshedly connected, and the threads of adjacent screws are arranged in opposite directions.

[0010] Preferably, an overflow port and a water outlet are provided on one side of the bottom of the condensate collection box, and a drain valve is installed at the water outlet.

[0011] Preferably, the heat dissipation cavity is provided with a plurality of horizontally arranged fixed transverse plates and a plurality of horizontally arranged movable transverse plates, the fixed transverse plates and the movable transverse plates are alternately distributed in the vertical direction, the movable transverse plates are fixedly mounted on the movable partitions, the fixed transverse plates are fixedly mounted on the inner walls of the heating shell, and the fixed transverse plates and the movable transverse plates configure the heat dissipation cavity into a serpentine heat dissipation channel.

[0012] Preferably, the cold air heating chamber is provided with a plurality of horizontally arranged fixed accordion covers and a plurality of horizontally arranged movable accordion covers, the fixed accordion covers and the movable accordion covers are alternately distributed in the vertical direction, one end of the movable accordion cover is fixedly mounted on the movable partition, and the other end is connected to the end of the cold air heating chamber away from the movable partition through a movable pull wire, one end of the fixed accordion cover is fixedly mounted on the inner wall of the end of the cold air heating chamber away from the movable partition, and the other end is connected to the movable partition through a fixed pull wire, the fixed accordion cover and the movable accordion cover construct the cold air heating chamber into a serpentine cold air heating channel.

[0013] Preferably, both ends of the exhaust shell are open structures, the exhaust shell is fixedly mounted on the back plate, an exhaust port connected to the exhaust shell is provided on the back plate, a first electric shutter is provided on the end of the exhaust shell away from the back plate, and the exhaust shell is connected to the input end of the cold air channel through an exhaust hose; both ends of the air inlet shell are open structures, the air inlet shell is fixedly mounted on the back plate, an air inlet connected to the air inlet shell is provided on the back plate, an air inlet filter is provided on the end of the air inlet shell away from the back plate, a second electric shutter for opening and closing the air inlet is provided on the end of the air inlet shell close to the air inlet, and the air inlet shell is connected to the heat dissipation cavity through the air inlet hose.

[0014] Preferably, the cabinet is provided with a plurality of chambers along its height direction, each chamber is separated by a ventilation partition with through holes, the exhaust port is connected with the uppermost chamber, and the output end of the cold air heating chamber is connected with the lowermost chamber through a temperature control hose; temperature and humidity sensors are installed on the outer wall of the cabinet, in the uppermost chamber, and in the lowermost chamber.

[0015] Preferably, the refrigeration shell and the heating shell are fixedly connected via a guide sleeve, a guide rod is fixed on the side plate, the guide sleeve is slidably connected to the guide rod, the first linear actuator is fixedly mounted on the side plate, and the output end of the first linear actuator is connected to the heating shell via a push plate.

[0016] Compared with the prior art, this technical solution has at least one of the following beneficial effects:

[0017] The dehumidification mechanism can dehumidify and cool the air inside the cabinet without being affected by excessive humidity in the external environment. The air is first cooled by condensation and then heated by temperature control before being transported to the cabinet to avoid condensation when the air inside the cabinet is cold. When the air humidity inside the cabinet drops to a preset interval value, the first linear actuator drives the refrigeration shell to fit the side panel, which can quickly cool the side panel, further improving the cooling efficiency inside the cabinet.

[0018] By providing a condensed water discharge mechanism, the condensed water droplets attached to the inner wall of the cold air channel are scraped off by the wiper frame, and the drainage port is closed alternately by the upper baffle and the lower baffle to discharge the condensed water in the cold air channel and avoid the exchange of the condensed water collection box and the outside air with the air in the refrigeration shell, thereby ensuring that the refrigeration shell outputs dry cold air. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Sectional view along line AA;

[0021] Figure 3 for Figure 1 Sectional view along line BB;

[0022] Figure 4 for Figure 1 Sectional view along line CC;

[0023] Figure 5 for Figure 1 Sectional view along line DD;

[0024] Figure 6 for Figure 5 Another state diagram of (the first electric blind and the second electric blind are opened);

[0025] Figure 7 for Figure 3 A partial enlargement of point E in the middle;

[0026] Figure 8 for Figure 3 A partial enlargement of the middle F;

[0027] Fig. 9 for Figure 4 A partial enlargement of the middle G;

[0028] In the figure, 1, cabinet body; 11, cabinet door; 12, back plate; 121, air outlet; 122, air inlet; 13, side plate; 14, ventilation partition; 2, dehumidification mechanism; 21, refrigeration shell; 211, cold air channel; 2111, vertical channel; 212, upper partition; 213, lower partition; 214, drain outlet; 215, water guide inclined block; 216, conduction pipe; 22, heating shell; 22 1. Heat dissipation cavity; 2211. Fixed horizontal plate; 2212. Movable horizontal plate; 2213. Heat dissipation channel; 222. Cold air heating cavity; 2221. Fixed accordion cover; 2222. Movable accordion cover; 2223. Movable pull wire; 2224. Fixed pull wire; 2225. Cold air heating channel; 223. Heat dissipation port; 224. Temperature control hose; 225. Heat-conducting shell; 226. Non-heat-conducting shell Body; 23, semiconductor cooling plate; 24, first linear actuator; 25, second linear actuator; 26, movable partition; 27, condensate discharge mechanism; 271, drive motor; 272, screw; 273, wiper frame; 274, condensate collection box; 2741, overflow port; 2742, water outlet; 2743, drain valve; 275, lower baffle; 276, upper baffle; 277, compression spring; 278, connector; 279, gear; 28, guide sleeve; 29, guide rod; 3, exhaust mechanism; 31, exhaust housing; 32, exhaust fan; 33, first electric blinds; 34, exhaust hose; 4, air inlet mechanism; 41, air inlet housing; 42, air inlet fan; 43, air inlet filter; 44, second electric blinds; 45, air inlet hose; 5, temperature and humidity sensor. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] See also Figures 1 to 9 The embodiment of the present application provides a self-controlling temperature and anti-condensation high-voltage switch cabinet, including a cabinet body 1, the cabinet body 1 includes a cabinet door 11 at the front end, a back plate 12 at the rear end, and side plates 13 at both sides, the cabinet body 1 also includes a top plate at the top end and a bottom plate at the bottom end, and a dehumidification mechanism 2 is provided on both side plates 13; in other embodiments, the dehumidification mechanism 2 can also be provided on only one of the side plates 13;

[0031] The dehumidification mechanism 2 includes a refrigeration housing 21, a heating housing 22, a semiconductor refrigeration sheet 23, a first linear actuator 24 and a second linear actuator 25. The first linear actuator 24 and the second linear actuator 25 are electric cylinders, hydraulic cylinders, air cylinders, etc. The first linear actuator 24 is installed on the cabinet 1, and the first linear actuator 24 drives the refrigeration housing 21 to fit or move away from the side plate 13. The refrigeration housing 21 is fixedly connected to the heating housing 22. A plurality of semiconductor refrigeration sheets 23 are arranged between the refrigeration housing 21 and the heating housing 22. The cold end of the semiconductor refrigeration sheet 23 is connected to the refrigeration housing 21, and the hot end of the semiconductor refrigeration sheet 23 is connected to the heating housing 22.

[0032] A serpentine cold air passage 211 is provided in the refrigeration shell 21; specifically, a plurality of upper partitions 212 and a plurality of lower partitions 213 are vertically fixed in the refrigeration shell 21, and the upper partitions 212 and the lower partitions 213 are alternately distributed in the horizontal direction, the upper partition 212 is connected to the inner wall of the top end of the refrigeration shell 21, and the lower partition 213 is connected to the inner wall of the bottom end of the refrigeration shell 21, and the upper partition 212 and the lower partition 213 configure the inner cavity of the refrigeration shell 21 into a cold air passage 211;

[0033] A movable partition 26 is installed in the heating shell 22 in a sliding seal, and the movable partition 26 divides the inner cavity of the heating shell 22 into an independent heat dissipation cavity 221 and a cold air heating cavity 222. The second linear actuator 25 is installed in the heat dissipation cavity 221 and the output end is connected to the movable partition 26. The second linear actuator 25 drives the movable partition 26 to slide in the heating shell 22 to adjust the volume of the cold air heating cavity 222. When the cold air heating cavity 222 is at the minimum volume, there is no semiconductor refrigeration plate 23 on the outside. The heating shell 22 is provided with a heat dissipation port 223 connected with the heat dissipation cavity 221. The heat dissipation port 223 is located at the top of the heating shell 22. A heat dissipation filter is installed at the heat dissipation port 223. The output end of the cold air channel 211 is connected with the input end of the cold air heating cavity 222 through a conducting pipe 216. The conducting pipe 216 is located at the upper part of the cold air channel 211 and the cold air heating cavity 222. The output end of the cold air heating cavity 222 is connected with the cabinet 1.

[0034] The heating shell 22 is composed of a heat-conducting shell part 225 and a non-heat-conducting shell part 226. When the cold air heating chamber 222 is at its minimum volume, it is located in the non-heat-conducting shell part 226. The heat-conducting shell part 225 is made of heat-conducting metals such as aluminum and iron, and the non-heat-conducting shell part 226 is made of hard materials with poor thermal conductivity such as plastic and hard polyurethane. In this way, when the cold air heating chamber 222 is at its minimum volume, the heat-conducting shell part 225 and the hot end of the semiconductor refrigeration sheet 23 can be prevented from conducting heat to the non-heat-conducting shell part 226, so that when the cold air heating chamber 222 is at its minimum volume, it can be ensured that the cold air heating chamber 222 can import and export cold air with a lower temperature.

[0035] The self-controlling temperature and anti-condensation high-voltage switch cabinet of the embodiment of the present application also includes an exhaust mechanism 3 and an air intake mechanism 4. The exhaust mechanism 3 includes an exhaust shell 31 connected to the input end of the cold air channel 211 and the cabinet body 1, and an exhaust fan 32 is installed in the exhaust shell 31; the air intake mechanism 4 includes an air intake shell 41 connected to the heat dissipation cavity 221, and an air intake fan 42 is installed in the air intake shell 41.

[0036] In this embodiment, when the temperature and humidity in the cabinet 1 exceed the threshold value, the air inside the cabinet 1 is dehumidified and cooled by the dehumidification mechanism 2; specifically, the first linear actuator 24 drives the refrigeration shell 21 away from the side plate 13, the semiconductor refrigeration plate 23 is powered on, the refrigeration end of the semiconductor refrigeration plate 23 cools the refrigeration shell 21, so that the temperature of the refrigeration shell 21 decreases, and the heating end of the semiconductor refrigeration plate 23 heats the heating shell 22, so that the temperature of the heating shell 22 increases; the second linear actuator 25 drives the movable partition 26 to slide in the heating shell 22 to adjust the volume of the cold air heating chamber 222 to the maximum, and a guide cylinder and a guide shaft are fixed to the upper part of the heat dissipation chamber 221, the guide cylinder is fixedly connected to the inner wall of the heat dissipation chamber 221, and the guide shaft is fixedly connected to the movable partition 26, so that the second linear actuator 25 drives the movable partition 26 to move stably in a straight line; the air inlet fan 42 transports the outside air to the lower part of the heat dissipation chamber 221 to dissipate the heat of the heating shell 22 and the heating end of the semiconductor refrigeration plate 23 , the air is discharged from the heat dissipation port 223 at the upper part of the heat dissipation cavity 221; the exhaust fan 32 guides the air in the cabinet 1 to the exhaust housing 31 and the cold air channel 211. During the air flowing in the cold air channel 211, the temperature gradually decreases, the water vapor in the air condenses, and the air with high temperature and humidity becomes low-temperature dry air after passing through the cold air channel 211, and then enters the cold air heating cavity 222. At this time, the cold air heating cavity 222 is in the largest volume state, and there is a heating end of the semiconductor refrigeration plate 23 outside it to heat it. Therefore, the low-temperature dry air will be heated after entering the cold air heating cavity 222, and finally the heated dry air re-enters the cabinet 1 to realize the dehumidification of the air inside the cabinet 1, avoiding the direct introduction of low-temperature dry air, which causes the temperature in the cabinet 1 to drop rapidly, causing condensation in the air in the cabinet 1, and the first linear actuator 24 drives the refrigeration housing 21 away from the side plate 13, avoiding the direct contact between the refrigeration housing 21 and the side plate 13, which causes the temperature of the side plate 13 to drop, thereby causing condensation in the air in the cabinet 1;

[0037] By detecting the temperature and humidity inside the cabinet 1, the second linear actuator 25 and the first linear actuator 24 are controlled to work. When the temperature of the dry air delivered into the cabinet 1 is too high, the second linear actuator 25 drives the movable partition 26 to slide in the heating shell 22 to reduce the volume of the cold air heating chamber 222, so that the area of ​​the cold air heating chamber 222 heated by the hot end of the semiconductor refrigeration plate 23 is reduced, thereby reducing the heating effect on the low-temperature dry air, so that the temperature difference between the dry air delivered to the cabinet 1 and the original air in the cabinet 1 is small, avoiding condensation; when the air in the cabinet 1 is too high, the second linear actuator 25 drives the movable partition 26 to slide in the heating shell 22 to reduce the volume of the cold air heating chamber 222, so that the area of ​​the cold air heating chamber 222 heated by the hot end of the semiconductor refrigeration plate 23 is reduced, thereby reducing the heating effect on the low-temperature dry air, and making the temperature difference between the dry air delivered to the cabinet 1 and the original air in the cabinet 1 small, avoiding condensation; After a period of circulating dehumidification, when the humidity drops to a preset range, the second linear actuator 25 drives the movable partition 26 to slide in the heating shell 22 to adjust the volume of the cold air heating chamber 222 to a minimum, so that the low-temperature dry air will not be heated and can directly enter the cabinet 1, thereby quickly reducing the temperature inside the cabinet 1; at the same time, the first linear actuator 24 drives the refrigeration shell 21 to approach and fit the side panel 13. After the refrigeration shell 21 fits the side panel 13, it contacts the side panel 13 for heat exchange, which can quickly cool the side panel 13 and further improve the cooling efficiency inside the cabinet 1.

[0038] In a preferred embodiment, when the hot and humid air passes through the cold air channel 211, the water vapor in the air will condense when it encounters cold air, and the condensed water will adhere to the inner wall of the cold air channel 211. In order to facilitate the discharge of the condensed water in the cold air channel 211, please refer to Figure 3, a cold air channel 211 is provided including a plurality of vertical channels 2111 connected in sequence, and the vertical channel 2111 is formed by the upper partition 212, the lower partition 213 and the refrigeration shell 21; the dehumidification mechanism 2 of the present embodiment also includes a condensate discharge mechanism 27, and the condensate discharge mechanism 27 includes a drive motor 271, a screw 272, a connector 278, a wiper frame 273, a condensate collection box 274, a lower baffle 275, a cushion block, an upper baffle 276, and a compression spring 277, and each vertical channel 2111 is provided with a screw 272 and a wiper frame 273, and the screw 272 is rotatably and sealedly connected to the top of the refrigeration shell 21 through a sealed bearing, and the connector 278 is threadedly mounted on the screw 272, and the wiper frame 273 is sleeved on the screw 272 and fixedly connected to the connector 278, and the wiper frame 273 and the vertical channel The inner wall of 2111 contacts and cooperates; a drain port 214 is opened at the bottom of the refrigeration shell 21 and is located directly below the upper partition 212. Water guiding oblique blocks 215 are provided on the inner wall of the bottom end of the refrigeration shell 21 and are located on both sides of the drain port 214. The condensate collection box 274 is fixedly installed at the bottom of the refrigeration shell 21 and is connected with the drain port 214. A lower baffle 275 is installed in the drain port 214 in a sliding and sealing manner. The lower end of the lower baffle 275 is connected to the condensate collection box 274 through a compression spring 277. The upper end of the lower baffle 275 is fixedly connected to the upper baffle 276 through a gasket. The distance between the lower baffle 275 and the upper baffle 276 is less than the depth of the drain port 214. The upper baffle 276 can cooperate with the drain port 214 in a sliding and sealing manner. The wiper frame 273 can contact and cooperate with the upper baffle 276 to press the lower baffle 275 down to below the drain port 214.

[0039] The driving motor 271 drives each screw rod 272 to rotate, so that each wiper frame 273 moves synchronously. Specifically, the driving motor 271 is fixedly installed on the top of the refrigeration shell 21 through a bracket, and the output end of the driving motor 271 is connected to one of the screw rods 272 through a coupling. A gear 279 is installed on each screw rod 272, and adjacent gears 279 are meshed and connected. The screws of adjacent screw rods 272 are set in opposite directions. The driving motor 271 uses a stepping motor. The driving motor 271 drives the screw rod 272 directly connected to it to rotate through a coupling. The screw rod 272 drives the other screw rods 272 to rotate through the gear 279. Since the gear 279 is set for transmission, the rotation directions of adjacent screw rods 272 will be opposite. In order to ensure that each screw rod 272 can drive the corresponding wiper frame 273 to rise and fall synchronously, the screws of adjacent screw rods 272 are set in opposite directions. In this way, each screw rod 272 can drive the corresponding wiper frame 273 to rise and fall synchronously.

[0040] To facilitate the drainage of condensed water in the condensed water collection box 274, refer to Figure 7The bottom side of the condensed water collection box 274 is provided with an overflow port 2741 and a water outlet 2742, and a drain valve 2743 is installed at the water outlet 2742. The overflow port 2741 is located above the water outlet 2742. When the water level of the condensed water in the condensed water collection box 274 reaches the overflow port 2741, it will automatically flow out to prevent the condensed water from flowing back into the refrigeration shell 21; by opening the drain valve 2743, the condensed water in the condensed water collection box 274 can be discharged from the water outlet 2742.

[0041] In the present embodiment, the driving motor 271 is controlled to work and drive the screw rods 272 to rotate. Since the wiper frame 273 contacts and cooperates with the inner wall of the vertical channel 2111, the wiper frame 273 is restricted from rotating, so that the screw rods 272 drive the wiper frame 273 to rise and fall linearly. During the descent of the wiper frame 273, the condensed water droplets attached to the inner wall of the vertical channel 2111 are scraped off, so that the condensed water accumulates at the bottom of the refrigeration shell 21; when the wiper frame 273 descends to contact with the upper baffle plate 276, it will continue to press down the upper baffle plate 276, and then press down the cushion block, the lower baffle plate 275 and the compression spring 277. The compression spring 277 is continuously compressed. During the descent of the lower baffle plate 275, the condensed water flows into the drain port 214 through the guidance of the water guide inclined block 215 and is blocked by the lower baffle plate 275. After the baffle 276 enters the drain outlet 214, the top of the drain outlet 214 is closed, and then the lower baffle 275 descends to the lower dead point and is located below the drain outlet 214. The bottom end of the drain outlet 214 is opened, and the condensed water in the drain outlet 214 and between the upper baffle 276 and the lower baffle 275 is discharged downward and enters the condensed water collecting box 274, thereby realizing the discharge of condensed water and preventing the condensed water collecting box 274 and the outside air from exchanging with the air in the refrigeration shell 21, thereby ensuring that the refrigeration shell 21 outputs dry cold air; then the driving motor 271 drives the screw 272 to rotate in the opposite direction, driving each wiper frame 273 to rise and reset, and under the elastic restoring force of the compression spring 277, the compression spring 277 pushes the lower baffle 275 to rise, so that the lower baffle 275 closes the drain outlet 214 again.

[0042] In a preferred embodiment, since the hot end of the semiconductor cooling sheet 23 is in contact with the heating housing 22, it is necessary to dissipate heat from the heating housing 22, and then dissipate heat from the hot end of the semiconductor cooling sheet 23. To improve the heat dissipation effect of the hot end of the semiconductor cooling sheet 23, please refer to Figure 4, a plurality of horizontally arranged fixed transverse plates 2211 and a plurality of horizontally arranged movable transverse plates 2212 are arranged in the heat dissipation cavity 221, the fixed transverse plates 2211 and the movable transverse plates 2212 are alternately distributed in the vertical direction, the movable transverse plates 2212 are fixedly mounted on the movable partition plate 26, the fixed transverse plates 2211 are fixedly mounted on the inner wall of the heating shell 22, and the fixed transverse plates 2211 and the movable transverse plates 2212 configure the heat dissipation cavity 221 into a serpentine heat dissipation channel 2213. The semiconductor cooling plate 23 is arranged on the path of the heat dissipation channel 2213, so that the air will increase the stroke when flowing in the heat dissipation channel 2213, can fully contact with the inner wall of the heat dissipation cavity 221, reduce dead angles, improve the heat dissipation effect on the heating shell 22 and the hot end of the semiconductor cooling plate 23, and ensure that the semiconductor cooling plate 23 can work normally.

[0043] In a preferred embodiment, since the input end of the cold air heating chamber 222 is approximately located directly above the output end thereof, in order to prevent the air input into the cold air heating chamber 222 from being discharged from the output end without being fully heated, resulting in the dry air entering the cabinet 1 having a too low temperature, causing the hot air in the cabinet 1 to contact with the cold air and condense, please refer to Figure 4 A plurality of horizontally arranged fixed accordion covers 2221 and a plurality of horizontally arranged movable accordion covers 2222 are arranged in the cold air heating chamber 222. The fixed accordion covers 2221 and the movable accordion covers 2222 are alternately distributed in the vertical direction. One end of the movable accordion cover 2222 is fixedly installed on the movable partition 26, and the other end is connected to the end of the cold air heating chamber 222 away from the movable partition 26 through a movable pull wire 2223. One end of the fixed accordion cover 2221 is fixedly installed on the inner wall of the end of the cold air heating chamber 222 away from the movable partition 26, and the other end is connected to the movable partition 26 through a fixed pull wire 2224. The fixed accordion cover 2221 and the movable accordion cover 2222 construct the cold air heating chamber 222 into a serpentine cold air heating channel 2225. The movable accordion cover 2222 and the fixed accordion cover 2221 are provided to improve the heating effect of the low-temperature dry air entering the cold air heating chamber 222. When the movable partition 26 moves, it will drive the movable accordion cover 2222 and the fixed pull wire 2224 to move, the movable accordion cover 2222 will extend, and the fixed pull wire 2224 will drive the fixed accordion cover 2221 to extend, thereby increasing the length, so that the cold air heating channel 2225 remains in a serpentine shape; in this way, the air will flow in a serpentine shape in the cold air heating channel 2225, increasing the stroke, improving the heat exchange effect with the inner wall of the cold air heating chamber 222, and thereby improving the heating effect of the low-temperature dry air.

[0044] In a preferred embodiment, in order to achieve the connection between the exhaust housing 31 and the cold air channel 211, and the ventilation and heat dissipation of the cabinet 1, please refer to Figure 5 and Figure 6The exhaust shell 31 is provided with an open structure at both ends, the exhaust shell 31 is fixedly mounted on the back plate 12, an exhaust port 121 connected to the exhaust shell 31 is opened on the back plate 12, a first electric shutter 33 is provided at one end of the exhaust shell 31 away from the back plate 12, the exhaust shell 31 is connected to the input end of the cold air channel 211 through an exhaust hose 34; two exhaust hoses 34 are provided, and correspond to the cold air channels 211 one by one.

[0045] To achieve the connection between the air inlet housing 41 and the cold air channel 211, as well as the ventilation and heat dissipation of the cabinet 1, please refer to Figure 5 and Figure 6 The air inlet housing 41 is provided with an open structure at both ends, and the air inlet housing 41 is fixedly mounted on the back plate 12. The back plate 12 is provided with an air inlet 122 connected to the air inlet housing 41. An air inlet filter 43 is provided at one end of the air inlet housing 41 away from the back plate 12. A second electric shutter 44 for opening and closing the air inlet 122 is provided at one end of the air inlet housing 41 close to the air inlet 122. The air inlet housing 41 is connected to the heat dissipation cavity 221 through an air inlet hose 45. Two air inlet hoses 45 are provided, corresponding to the dehumidification mechanism 2 one by one.

[0046] In this embodiment, when the cabinet 1 performs air circulation temperature control through the dehumidification mechanism 2, the first electric shutter 33 is closed, so that the open end of the exhaust shell 31 away from the back panel 12 is closed to avoid communication with the outside air; the second electric shutter 44 is closed, so that the open end of the air inlet shell 41 close to the back panel 12 is closed to prevent the air inlet fan 42 from introducing the outside air into the cabinet 1; and when the outside temperature and humidity are suitable and the dehumidification mechanism 2 does not need to work, the first electric shutter 33 and the second electric shutter 44 are opened, and the inside of the cabinet 1 can flow with the outside air to achieve natural convection heat dissipation; when the temperature inside the cabinet 1 is high, the air inlet fan 42 and the exhaust fan 32 can be turned on, the air inlet fan 42 transports the outside air into the cabinet 1, and the exhaust fan 32 draws the air out of the cabinet 1, thereby promoting the air flow in the cabinet 1 and improving the heat dissipation effect.

[0047] In a preferred embodiment, in order to facilitate the installation of related electrical components and facilitate the air flow in the cabinet 1, please refer to Figure 1 , Figure 5 and Figure 6 Three chambers are arranged in the cabinet 1 along its height direction, and each chamber is separated by a ventilation partition 14 with through holes. The cabinet door 11 corresponds to the chamber one by one, and the cabinet door 11 is hinged to the cabinet 1 through a hinge; the exhaust port 121 is connected to the uppermost chamber, and the output end of the cold air heating chamber 222 is connected to the lowermost chamber through a temperature control hose 224; temperature and humidity sensors 5 are installed on the outer wall of the cabinet 1, in the uppermost chamber, and in the lowermost chamber.

[0048] Since the density of hot air is less than that of cold air, the temperature of the uppermost chamber will be higher than that of the lowermost chamber. Therefore, the uppermost chamber is connected to the exhaust port 121 to facilitate the discharge of hot air in the cabinet 1, and the output end of the cold air heating chamber 222 is connected to the lowermost chamber to facilitate the entry of cold air into the cabinet 1 and promote air circulation in the cabinet 1. By arranging the temperature and humidity sensor 5 in the bottom chamber, it is convenient to detect the temperature and humidity of the air delivered to the cabinet 1 by the cold air heating chamber 222, and then it is convenient to control the operation of the second linear actuator 25, that is, when the temperature of the air delivered to the cabinet 1 by the cold air heating chamber 222 is too low, the second linear actuator 25 drives the movable partition 26 to move, so that the volume of the cold air heating chamber 222 increases, and the heating effect of the air is improved; by arranging the temperature and humidity sensor 5 in the top chamber, it is convenient to detect the temperature and humidity of the air discharged from the cabinet 1, and then it is convenient to control the operation of the first linear actuator 24, that is, when the humidity of the air discharged from the cabinet 1 is lower than the preset value, the first linear actuator 24 drives the refrigeration shell 21 to fit with the side plate 13, while preventing condensation, further promoting the reduction of the internal temperature of the cabinet 1. The temperature and humidity sensor 5 arranged on the outer wall of the cabinet 1 is used to detect the temperature and humidity information of the external environment, and by comparing it with the temperature and humidity information inside the cabinet 1, it is determined which heat dissipation method is used to dissipate the heat of the cabinet 1.

[0049] In a preferred embodiment, in order to facilitate the first linear actuator 24 to drive the refrigeration housing 21 to move, please refer to Figures 1 to 4 , the refrigeration housing 21 and the heating housing 22 are fixedly connected through guide sleeves 28, four guide sleeves 28 are provided, four guide rods 29 are fixed on the side plate 13, the guide sleeves 28 correspond to the guide rods 29 one by one, the guide sleeves 28 and the corresponding guide rods 29 are slidably connected, the first linear actuator 24 is fixedly mounted on the side plate 13, and the output end of the first linear actuator 24 is connected to the heating housing 22 through a push plate. The guide sleeves 28 and the guide rods 29 support and guide the refrigeration housing 21 and the heating housing 22, so that the first linear actuator 24 can drive the heating housing 22 and the refrigeration housing 21 to move smoothly through the push plate.

[0050] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A self-controlling temperature and anti-condensation high-voltage switch cabinet, comprising a cabinet body (1), wherein the cabinet body (1) comprises a cabinet door (11) at the front end, a back plate (12) at the rear end, and side plates (13) at both sides, characterized in that: A dehumidification mechanism (2) is provided on at least one side plate (13); The dehumidification mechanism (2) comprises a refrigeration shell (21), a heating shell (22), a semiconductor refrigeration sheet (23), a first linear actuator (24) and a second linear actuator (25); the first linear actuator (24) is mounted on the cabinet (1); the first linear actuator (24) drives the refrigeration shell (21) to fit into or move away from the side plate (13); the refrigeration shell (21) is fixedly connected to the heating shell (22); a plurality of semiconductor refrigeration sheets (23) are arranged between the refrigeration shell (21) and the heating shell (22); the cold end of the semiconductor refrigeration sheet (23) is connected to the refrigeration shell (21); the hot end of the semiconductor refrigeration sheet (23) is connected to the heating shell (22); a serpentine cold air channel (211) is arranged in the refrigeration shell (21); a sliding seal is arranged in the heating shell (22); A movable partition (26) is installed, and the movable partition (26) divides the inner cavity of the heating shell (22) into an independent heat dissipation cavity (221) and a cold air heating cavity (222). The second linear actuator (25) is installed in the heat dissipation cavity (221) and the output end is connected to the movable partition (26). The second linear actuator (25) drives the movable partition (26) to slide in the heating shell (22) to adjust the volume of the cold air heating cavity (222). When the cold air heating cavity (222) is at a minimum volume, there is no semiconductor refrigeration plate (23) on its exterior. The heating shell (22) is provided with a heat dissipation port (223) that is in communication with the heat dissipation cavity (221). The output end of the cold air channel (211) is in communication with the input end of the cold air heating cavity (222), and the output end of the cold air heating cavity (222) is in communication with the cabinet (1). It also comprises an exhaust mechanism (3) and an air intake mechanism (4); the exhaust mechanism (3) comprises an exhaust housing (31) connected to the input end of the cold air channel (211) and the cabinet (1), an exhaust fan (32) being installed in the exhaust housing (31); and the air intake mechanism (4) comprises an air intake housing (41) connected to the heat dissipation cavity (221), an air intake fan (42) being installed in the air intake housing (41).

2. The self-controlling temperature and anti-condensation high-voltage switchgear according to claim 1 is characterized in that: A plurality of upper partitions (212) and a plurality of lower partitions (213) are vertically fixed in the refrigeration shell (21); the upper partitions (212) and the lower partitions (213) are alternately distributed in the horizontal direction; the upper partitions (212) are connected to the inner wall at the top end of the refrigeration shell (21); the lower partitions (213) are connected to the inner wall at the bottom end of the refrigeration shell (21); the upper partitions (212) and the lower partitions (213) configure the inner cavity of the refrigeration shell (21) into a cold air channel (211).

3. The self-controlling temperature and anti-condensation high-voltage switchgear according to claim 2 is characterized in that: The cold air channel (211) comprises a plurality of vertical channels (2111) connected in sequence; the dehumidification mechanism (2) further comprises a condensate discharge mechanism (27), the condensate discharge mechanism (27) comprising a drive motor (271), a screw rod (272), a connecting piece (278), a wiper frame (273), a condensate collection box (274), a lower baffle (275), a cushion block, an upper baffle (276), and a compression spring (277), and each vertical channel (2111) has a A screw rod (272) and a wiper frame (273) are provided. The screw rod (272) is rotatably sealedly connected to the top of the refrigeration shell (21). The connecting piece (278) is threadedly mounted on the screw rod (272). The wiper frame (273) is sleeved on the screw rod (272) and fixedly connected to the connecting piece (278). The wiper frame (273) is in contact with the inner wall of the vertical channel (2111). A drainage port (2111) is provided at the bottom of the refrigeration shell (21) and directly below the upper partition plate (212). 214), water guiding inclined blocks (215) are provided on the inner wall of the bottom end of the refrigeration shell (21) and on both sides of the drain port (214), a condensate collection box (274) is fixedly installed at the bottom of the refrigeration shell (21) and is in communication with the drain port (214), a lower baffle (275) is installed in the drain port (214) in a sliding seal, the lower end of the lower baffle (275) is connected to the condensate collection box (274) through a compression spring (277), and the upper end of the lower baffle (275) is connected to the upper The baffle plate (276) is fixedly connected, the spacing between the lower baffle plate (275) and the upper baffle plate (276) is smaller than the depth of the drain outlet (214), the upper baffle plate (276) can be slidably sealed with the drain outlet (214), and the wiper frame (273) can be in contact with the upper baffle plate (276) to press the lower baffle plate (275) downward to below the drain outlet (214); the drive motor (271) drives the screw rods (272) to rotate, so that the wiper frames (273) move synchronously.

4. The self-controlling temperature and anti-condensation high-voltage switchgear according to claim 3 is characterized in that: The drive motor (271) is fixedly mounted on the top of the refrigeration shell (21) via a bracket, and the output end of the drive motor (271) is transmission-connected to one of the screw rods (272) via a coupling, and each screw rod (272) is mounted with a gear (279), and adjacent gears (279) are meshingly connected, and the threads of adjacent screw rods (272) are arranged in opposite directions.

5. The self-controlling temperature and anti-condensation high-voltage switch cabinet according to claim 3 is characterized in that: An overflow port (2741) and a water outlet (2742) are provided on one side of the bottom of the condensed water collection box (274), and a drain valve (2743) is installed at the water outlet (2742).

6. The self-controlling temperature and anti-condensation high-voltage switchgear according to claim 1 is characterized in that: The heat dissipation cavity (221) is provided with a plurality of horizontally arranged fixed transverse plates (2211) and a plurality of horizontally arranged movable transverse plates (2212); the fixed transverse plates (2211) and the movable transverse plates (2212) are alternately distributed in the vertical direction; the movable transverse plates (2212) are fixedly mounted on the movable partition plates (26); the fixed transverse plates (2211) are fixedly mounted on the inner wall of the heating shell (22); the fixed transverse plates (2211) and the movable transverse plates (2212) configure the heat dissipation cavity (221) into a serpentine heat dissipation channel (2213).

7. The self-controlling temperature and anti-condensation high-voltage switch cabinet according to claim 1 is characterized in that: The cold air heating chamber (222) is provided with a plurality of horizontally arranged fixed accordion covers (2221) and a plurality of horizontally arranged movable accordion covers (2222); the fixed accordion covers (2221) and the movable accordion covers (2222) are alternately distributed in the vertical direction; one end of the movable accordion cover (2222) is fixedly mounted on the movable partition (26), and the other end is connected to the end of the cold air heating chamber (222) away from the movable partition (26) via a movable pull wire (2223); one end of the fixed accordion cover (2221) is fixedly mounted on the inner wall of the cold air heating chamber (222) away from the movable partition (26), and the other end is connected to the movable partition (26) via a fixed pull wire (2224); the fixed accordion cover (2221) and the movable accordion cover (2222) configure the cold air heating chamber (222) into a serpentine cold air heating channel (2225).

8. The self-controlling temperature and anti-condensation high-voltage switch cabinet according to claim 1 is characterized in that: Both ends of the exhaust housing (31) are open structures. The exhaust housing (31) is fixedly mounted on the back plate (12). An exhaust port (121) communicating with the exhaust housing (31) is provided on the back plate (12). A first electric shutter (33) is provided at one end of the exhaust housing (31) away from the back plate (12). The exhaust housing (31) is communicated with the input end of the cold air channel (211) via an exhaust hose (34). Both ends of the air inlet housing (41) are open structures. The housing (41) is fixedly mounted on the back plate (12); an air inlet (122) communicating with the air inlet housing (41) is provided on the back plate (12); an air inlet filter (43) is provided at one end of the air inlet housing (41) away from the back plate (12); a second electric shutter (44) for opening and closing the air inlet (122) is provided at one end of the air inlet housing (41) close to the air inlet (122); and the air inlet housing (41) is communicated with the heat dissipation cavity (221) via an air inlet hose (45).

9. The self-controlling temperature and anti-condensation high-voltage switch cabinet according to claim 1, characterized in that: The cabinet (1) is provided with a plurality of chambers along its height direction, each chamber being separated by a ventilation partition (14) having through holes, the exhaust port (121) being connected to the uppermost chamber, and the output end of the cold air heating chamber (222) being connected to the lowermost chamber via a temperature control hose (224); temperature and humidity sensors (5) are installed on the outer wall of the cabinet (1), in the uppermost chamber, and in the lowermost chamber.

10. The self-controlling temperature and anti-condensation high-voltage switch cabinet according to claim 1, characterized in that: The refrigeration shell (21) and the heating shell (22) are fixedly connected via a guide sleeve (28); a guide rod (29) is fixed on the side plate (13); the guide sleeve (28) and the guide rod (29) are slidably connected; the first linear actuator (24) is fixedly mounted on the side plate (13); and an output end of the first linear actuator (24) is connected to the heating shell (22) via a push plate.

Images