An electrical control cabinet for a thermal power plant

Abstract

The present invention relates to the technical field of control cabinets. The present invention provides an electrical control cabinet for a thermal power plant, including an electrical control cabinet, a plurality of vents are provided on the electrical control cabinet, a heat absorbing plate is fixedly installed on the inner wall of the electrical control cabinet, a heat dissipation structure is installed on the heat absorbing plate, four connecting seats are symmetrically fixedly installed on the top side of the electrical control cabinet, a ventilation structure is installed on the four connecting seats, two fixed frames are symmetrically fixedly installed on the top side of the electrical control cabinet, and a snow-proof structure is installed on the two fixed frames. The present invention further improves the heat dissipation effect of the electrical control cabinet by combining heat conduction with air cooling. When the present invention is used in winter, if the ambient temperature is low, the fan and the electric heating pipe can be turned on to heat the internal equipment of the electrical control cabinet to prevent the temperature from being too low to affect the operation of the equipment. When used outdoors, the metal protective shed can be used to block snow, and the present invention also has a snow removal function.

Description

Technical Field

[0001] The invention relates to the technical field of control cabinets, in particular to an electrical control cabinet for a thermal power plant. Background Art

[0002] The electrical control cabinet is one of the important equipment in a thermal power plant. It is mainly used to control and monitor the operation of the electrical system. It is usually composed of multiple electrical components and assemblies, including circuit breakers, contactors, relays, PLCs, etc. It can realize remote control, automatic control and protection of the electrical system. It can accurately control and adjust the electrical system according to the operating status and needs of the thermal power plant to ensure the stable operation and safety of the electrical system.

[0003] In the prior art, the internal equipment of the existing thermal power plant electrical control cabinet usually has certain requirements for temperature. In order to avoid excessive temperature during equipment operation, it is usually equipped with a wind heat dissipation function. However, the effect of wind heat dissipation alone is not ideal. If used in weather with excessively high temperatures, the heat in the control cabinet cannot be dissipated in time. Long-term operation of the equipment in a high temperature environment is prone to overheating and damage. If the ambient temperature is too low, it is easy to cause the conductivity of the electronic components in the electrical control cabinet to decrease, affecting the operation of the equipment. In order to enable the electrical control cabinet of a thermal power plant to meet the needs of different environments, an electrical control cabinet of a thermal power plant is needed to meet people's needs. Summary of the invention

[0004] The present invention provides an electrical control cabinet for a thermal power plant, which is used to solve the technical problems of the prior art proposed by the above background technology.

[0005] To solve the above problems, the present invention discloses an electrical control cabinet for a thermal power plant, including an electrical control cabinet, a plurality of ventilation holes are opened on the electrical control cabinet, a heat absorbing plate is fixedly installed on the inner wall of the electrical control cabinet, a heat dissipation structure is installed on the heat absorbing plate, four connecting seats are symmetrically fixedly installed on the top side of the electrical control cabinet, ventilation structures are installed on the four connecting seats, two fixed frames are symmetrically fixedly installed on the top side of the electrical control cabinet, and snow-proof structures are installed on the two fixed frames.

[0006] Preferably, the heat dissipation structure includes multiple heat conducting plates, which are fixedly mounted on one side of the heat absorbing plate, and a heat conducting pipe is fixedly mounted on the heat conducting plate. A U-shaped connecting frame is fixedly mounted on one side of the electrical control cabinet, and a water tank is fixedly mounted on one side of the U-shaped connecting frame. One end of the heat conducting pipe passes through the electrical control cabinet and is fixedly mounted on one side of the water tank, and the heat conducting pipe is connected to the water tank. The other end of the heat conducting pipe passes through the electrical control cabinet and is fixedly mounted with a water pump, and a water pump is fixedly mounted on the water pump, and the water pump is connected to the water tank. A temperature conducting plate is fixedly mounted on the inner wall of the water tank, and two semiconductor refrigeration plates are fixedly mounted on one side of the temperature conducting plate, and the cooling surfaces of the two semiconductor refrigeration plates are both fitted with the temperature conducting plate. A heat conducting copper plate is movably mounted on one side of the two semiconductor refrigeration plates, and the heating surfaces of the two semiconductor refrigeration plates are respectively fitted with the two heat conducting copper plates. Multiple heat dissipation pipes are fixedly mounted on one side of the two heat conducting copper plates, and multiple heat dissipation fins are fixedly mounted on the heat dissipation pipes.

[0007] Preferably, the ventilation structure includes two positive and negative screw rods, two connecting seats located on the same side are rotatably mounted on the same positive and negative screw rod, a driving device is used to drive the two positive and negative screw rods to rotate, the same air outlet box is threadedly mounted on the two positive and negative screw rods, the air outlet box is slidably mounted in a corresponding vent, a first air outlet slot and a second air outlet slot are provided on the inner wall of the air outlet box, the second air outlet slot corresponds to the vent, one end of two telescopic bellows is fixedly mounted on one side of the air outlet box, the other ends of the two telescopic bellows are fixedly mounted with the same air guide box, the two telescopic bellows are both connected to the air guide box, the two telescopic bellows are respectively connected to the first air outlet slot and the second air outlet slot, an air guide duct is rotatably mounted in the air guide box, and the air guide duct is provided with The first air outlet, the second air outlet, and the third air outlet are connected to the connecting hole, the connecting hole is connected to the first air outlet, the second air outlet, and the third air outlet, the second air outlet is connected to the telescopic bellows close to the second air outlet slot, the first air outlet is adapted to the telescopic bellows close to the first air outlet slot, a diverter pipe is fixedly installed on one side of the air guide box, the diverter pipe is connected to the air guide box, the third air outlet is connected to the diverter pipe, an air guide cover is fixedly installed on one end of the diverter pipe, the air guide cover is fixedly installed on one side of the water tank, the semiconductor refrigeration sheet and the heat dissipation fins are both located in the air guide cover, the air guide cover is connected to the diverter pipe, a U-shaped mounting frame is fixedly installed on the top side of the U-shaped connecting frame, a fan is fixedly installed on the top side of the U-shaped mounting frame, and the output end of the fan is connected to the connecting hole.

[0008] Preferably, the snow-proof structure includes multiple guide rods, which are fixedly mounted on the inner wall of the fixed frame, and movable struts are slidably mounted on the guide rods, and a metal protective shed is fixedly mounted on the top side of the movable struts, a connecting plate is fixedly mounted on one side of the movable struts, and multiple arc-shaped blocks are fixedly mounted on one side of the connecting plate, an extrusion cylinder is fixedly mounted on one side of the air outlet box, and a fixed frame is fixedly mounted on the output end of the extrusion cylinder, a roller is rotatably mounted on the fixed frame, and the roller is located on one side of the arc-shaped block, and an electric heating tube is fixedly mounted on the inner wall of the connecting hole.

[0009] Preferably, the movable support rod is provided with two guide sliding holes, and the two guide rods are slidably installed in the two guide sliding holes respectively;

[0010] A spring is slidably sleeved on the guide rod, one end of the spring is fixedly mounted on the inner wall of the fixed frame, and the other end of the spring is fixedly mounted on one side of the movable support rod.

[0011] Preferably, an adjusting cylinder is fixedly mounted on the top side of the U-shaped mounting frame, a linkage rack is fixedly mounted on the output end of the adjusting cylinder, an adjusting gear ring is fixedly mounted on the air duct, and the adjusting gear ring is meshed with the linkage rack.

[0012] Preferably, the driving device includes a support frame, the support frame is fixedly installed on the bottom side of the water tank, a motor is fixedly installed on the support frame, a first pulley is fixedly installed on the output end of the motor, a belt is installed on the first pulley for transmission, two second pulleys are installed on the belt for transmission, the two second pulleys are rotatably installed on the bottom side of the water tank, linkage shafts are fixedly installed on the two second pulleys, the two linkage shafts are rotatably installed on the water tank, a plurality of blades are fixedly installed on the two linkage shafts, and the blades are located in the water tank; a first bevel gear is fixedly installed on one end of the linkage shaft, a second bevel gear is fixedly installed on one end of the forward and reverse screw rods, and the second bevel gear is meshed with the first bevel gear.

[0013] Preferably, the air guide box is provided with two guide holes, the second air outlet is connected to the guide hole, and the first air outlet is adapted to the guide hole;

[0014] Mounting seats are fixedly installed on both sides of the air outlet box, threaded holes are provided on the two mounting seats, and two positive and negative threaded screw rods are respectively threadedly installed in the two threaded holes.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the present invention, through the arrangement of structures such as heat pipes and fans, the heat generated inside the electrical control cabinet when it is in use can be absorbed by the heat absorbing plate, heat conducting sheet and heat conducting pipes. By turning on the water pump, the water in the water tank can circulate through the heat conducting pipes, and the heat therein will be taken away in the process to achieve the heat dissipation effect. By turning on the semiconductor refrigeration sheet, the water in the water tank can be cooled so that the water can continue to meet the heat dissipation needs. In addition, the fan can be turned on during the process, and air can be blown toward the heat dissipation pipes and heat dissipation fins by the fan to reduce the temperature of the heating surface of the semiconductor refrigeration sheet, thereby improving the cooling effect of its cooling surface and further accelerating the cooling of the water in the water tank. On the other hand, the airflow will quickly circulate from the two vents under the action of the fan, accelerating the flow of air in the electrical control cabinet for heat exchange, and dissipating heat through the combination of heat conduction and air cooling, thereby further improving the heat dissipation effect of the electrical control cabinet.

[0017] In the present invention, by setting the motor, turning on the motor can make the blades stir the water in the water tank, so that the water in the water tank can flow, and the water can fully contact the heat conduction plate, thereby improving the cooling effect on the water. In the process, the air outlet box will be driven to move back and forth at the vent so that the external air can be evenly blown into the vent to improve the heat exchange effect.

[0018] In the present invention, through the arrangement of structures such as the metal protective shed and the electric heating tube, when used in winter, if the ambient temperature is low, the fan and the electric heating tube can be turned on to heat the airflow blown out by the fan, and then the hot air flow circulates from the vents to heat the internal equipment to prevent the temperature from being too low and affecting the operation of the equipment. When used outdoors, the metal protective shed can be used to block snow. If there is too much snow accumulated on the surface of the metal protective shed, the regulating cylinder can be turned on to switch the air guide duct, so that the hot air flow blows to the bottom side of the metal protective shed through the first air outlet slot, heats the metal protective shed, and accelerates the melting of snow on the metal protective shed. The motor can be turned on to make the air outlet box move back and forth, and the metal protective shed is evenly heated. During the process, the extrusion cylinder can be turned on to drive the roller to contact the connecting plate. Under the action of the reciprocating movement of the air outlet box, the metal protective shed will be driven to shake back and forth, so as to shake off the snow on the metal protective shed, thereby further improving the snow removal effect.

[0019] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a structural schematic diagram of an electrical control cabinet for a thermal power plant proposed by the present invention;

[0022] Figure 2 This is a bottom view structural diagram of an electrical control cabinet of a thermal power plant proposed by the present invention;

[0023] Figure 3 This is a structural schematic diagram of a heat absorbing plate portion of an electrical control cabinet of a thermal power plant proposed by the present invention;

[0024] Figure 4 This is a schematic diagram of the connection structure of the heat conduction pipe part of the electrical control cabinet of a thermal power plant proposed by the present invention;

[0025] Figure 5 This is a cross-sectional structural schematic diagram of a water tank portion of an electrical control cabinet of a thermal power plant proposed by the present invention;

[0026] Figure 6 This is a schematic diagram of the connection structure of the air outlet box part of the electrical control cabinet of a thermal power plant proposed by the present invention;

[0027] Figure 7 This is a schematic structural diagram of a semiconductor refrigeration plate portion of an electrical control cabinet of a thermal power plant proposed by the present invention;

[0028] Figure 8 This is a structural schematic diagram of the air duct part of an electrical control cabinet of a thermal power plant proposed by the present invention;

[0029] Fig. 9 The present invention is a schematic structural diagram of an air guide box portion of an electrical control cabinet of a thermal power plant.

[0030] In the figure: 100, electrical control cabinet; 101, vent; 200, heat absorbing plate; 201, heat conducting sheet; 202, heat conducting pipe; 203, U-shaped connecting frame; 204, water tank; 205, water pump; 206, water pump; 207, temperature conducting plate; 208, semiconductor refrigeration sheet; 209, heat conducting copper plate; 210, heat dissipation pipe; 211, heat dissipation fin; 212, support frame; 213, motor; 214, first pulley; 215, belt; 216, second pulley; 217, linkage shaft; 218, blade; 300, connecting seat; 301, positive and negative threaded screw rod; 302, air outlet box; 303, telescopic bellows; 304, air guide box; 305, air guide pipe; 306, first air outlet; 307, second air outlet Air outlet; 308, third air outlet; 309, diverter pipe; 310, air guide cover; 311, first air outlet slot; 312, second air outlet slot; 313, U-shaped mounting frame; 314, fan; 315, guide hole; 316, mounting seat; 317, threaded hole; 318, first bevel gear; 319, second bevel gear; 320, connecting hole; 400, fixed frame; 401, guide rod; 402, movable support rod; 403, metal protective shed; 404, connecting plate; 405, arc-shaped block; 406, extrusion cylinder; 407, fixed frame; 408, roller; 409, guide slide hole; 410, spring; 411, electric heating tube; 412, adjusting cylinder; 413, linkage rack; 414, adjusting gear ring. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0032] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0034] The present invention provides the following embodiments

[0035] Embodiment 1, the embodiment of the present invention provides an electrical control cabinet of a thermal power plant, such as Figure 1-Figure 2 As shown, it includes an electrical control cabinet 100, which has two ventilation holes 101, a heat absorbing plate 200 is fixedly installed on the inner wall of the electrical control cabinet 100, and a heat dissipation structure is installed on the heat absorbing plate 200, four connecting seats 300 are symmetrically fixedly installed on the top side of the electrical control cabinet 100, and a ventilation structure is installed on the four connecting seats 300, and two fixed frames 400 are symmetrically fixedly installed on the top side of the electrical control cabinet 100, and a snow-proof structure is installed on the two fixed frames 400.

[0036] The heat dissipation structure includes a plurality of heat conducting sheets 201, the heat conducting sheets 201 are fixedly mounted on one side of the heat absorbing plate 200, a heat conducting pipe 202 is fixedly mounted on the heat conducting sheet 201, a U-shaped connecting frame 203 is fixedly mounted on one side of the electrical control cabinet 100, a water tank 204 is fixedly mounted on one side of the U-shaped connecting frame 203, one end of the heat conducting pipe 202 passes through the electrical control cabinet 100 and is fixedly mounted on one side of the water tank 204, the heat conducting pipe 202 is connected to the water tank 204, the other end of the heat conducting pipe 202 passes through the electrical control cabinet 100 and is fixedly mounted on a water pump 205, a water pump 205 is fixedly mounted on the water pump 205 06. The water pumping pipe 206 is connected to the water tank 204. A temperature conducting plate 207 is fixedly installed on the inner wall of the water tank 204. Two semiconductor refrigeration plates 208 are fixedly installed on one side of the temperature conducting plate 207. The cooling surfaces of the two semiconductor refrigeration plates 208 are both in contact with the temperature conducting plate 207. A heat-conducting copper plate 209 is movably installed on one side of the two semiconductor refrigeration plates 208. The heating surfaces of the two semiconductor refrigeration plates 208 are respectively in contact with the two heat-conducting copper plates 209. A plurality of heat dissipation pipes 210 are fixedly installed on one side of the two heat-conducting copper plates 209. A plurality of heat dissipation fins 211 are fixedly installed on the heat dissipation pipes 210.

[0037] The ventilation structure includes two positive and negative threaded rods 301, two connecting seats 300 located on the same side are rotatably mounted on the same positive and negative threaded rods 301, a driving device is used to drive the two positive and negative threaded rods 301 to rotate, the two positive and negative threaded rods 301 are threadedly mounted with the same air outlet box 302, the air outlet box 302 is slidably mounted in a corresponding vent 101, and the inner wall of the air outlet box 302 is provided with a first air outlet slot 311 and a second air outlet slot 312, the second air outlet slot 312 and the vent 101 are connected to each other. 1, one end of two telescopic bellows 303 is fixedly installed on one side of the air outlet box 302, and the other end of the two telescopic bellows 303 is fixedly installed with the same air guide box 304, and the two telescopic bellows 303 are connected to the air guide box 304, and the two telescopic bellows 303 are respectively connected to the first air outlet slot 311 and the second air outlet slot 312, and an air guide duct 305 is rotatably installed in the air guide box 304, and the air guide duct 305 is provided with a first air outlet 306, a second air outlet 307, The third air outlet 308 is connected to the connecting hole 320, and the connecting hole 320 is connected to the first air outlet 306, the second air outlet 307, and the third air outlet 308. The second air outlet 307 is connected to the telescopic bellows 303 near the second air outlet slot 312, and the first air outlet 306 is adapted to the telescopic bellows 303 near the first air outlet slot 311. A shunt pipe 309 is fixedly installed on one side of the air guide box 304, and the shunt pipe 309 is connected to the air guide box 304. The third air outlet 308 is connected to the connecting hole 320, and the connecting hole 320 is connected to the first air outlet 306, the second air outlet 307 is connected to the telescopic bellows 303 near the second air outlet slot 312, and the first air outlet 306 is adapted to the telescopic bellows 303 near the first air outlet slot 311. 08 is connected with the shunt pipe 309, one end of the shunt pipe 309 is fixedly installed with an air guide cover 310, the air guide cover 310 is fixedly installed on one side of the water tank 204, the semiconductor refrigeration plate 208 and the heat dissipation fins 211 are both located in the air guide cover 310, the air guide cover 310 is connected with the shunt pipe 309, a U-shaped mounting frame 313 is fixedly installed on the top side of the U-shaped connecting frame 203, a fan 314 is fixedly installed on the top side of the U-shaped mounting frame 313, and the output end of the fan 314 is connected with the connecting hole 320.The heat generated in the electrical control cabinet 100 will be transferred to the heat absorbing plate 200, and the heat absorbing plate 200 will transfer the heat to the heat conducting sheet 201, and the heat of the heat conducting sheet 201 will be transferred to the heat conducting pipe 202. During the process, the water pump 205 can be turned on to extract the water in the water tank 204 and circulate it through the heat conducting pipe 202. The water will take away the heat of the heat conducting pipe 202 in the process of flowing through the heat conducting pipe 202 to achieve heat exchange. Finally, the water will return to the water tank 204 through the other end of the heat conducting pipe 202 to achieve recycling. The water in the water tank 204 will gradually heat up during the continuous heat exchange process, and the temperature of the water will be transferred to the heat conducting plate 207. During the process, the semiconductor refrigeration sheet 208 can be turned on to cool the water in contact with the heat conducting plate 207, and the fan 314 can be turned on in conjunction with the output end of the fan 314 to blow air into the connecting hole 320 on the air conducting pipe 305, so that the air flow blows through the air conducting pipe 305. The heat dissipation fins 211 and the heat dissipation pipes 210 in the air cover 310 take away the heat of the heat dissipation fins 211 and the heat dissipation pipes 210, dissipate heat for the heating surface of the semiconductor refrigeration plate 208, and improve the cooling effect of the cooling surface of the semiconductor refrigeration plate 208. On the other hand, part of the airflow blown out by the fan 314 will enter one of the telescopic bellows 303 through the second air outlet 307, and finally be blown out from the second air outlet slot 312 to the vent 101, so that the air can quickly circulate from the two vents 101 to exchange heat in the electrical control cabinet 100. During the heat exchange process, turning on the motor 213 can make the air outlet box 302 slide back and forth. When the air outlet box 302 slides, it will stretch the telescopic bellows 303 and drive the second air outlet slot 312 to slide. During the reciprocating sliding of the second air outlet slot 312, the air can be evenly blown into the vent 101, thereby improving the heat exchange effect.

[0038] The driving device includes a support frame 212, the support frame 212 is fixedly installed on the bottom side of the water tank 204, a motor 213 is fixedly installed on the support frame 212, a first pulley 214 is fixedly installed on the output end of the motor 213, a belt 215 is installed on the first pulley 214 for transmission, two second pulleys 216 are installed on the belt 215 for transmission, the two second pulleys 216 are both rotatably installed on the bottom side of the water tank 204, a linkage shaft 217 is fixedly installed on the two second pulleys 216, the two linkage shafts 217 are both rotatably installed on the water tank 204, a plurality of blades 218 are fixedly installed on the two linkage shafts 217, and the blades 218 are located in the water tank 204; a first bevel gear 318 is fixedly installed on one end of the linkage shaft 217, a second bevel gear 319 is fixedly installed on one end of the forward and reverse screw rod 301, and the second bevel gear 319 is meshed with the first bevel gear 318. The air guide box 304 is provided with two guide holes 315, the second air outlet 307 is connected with the guide hole 315, and the first air outlet 306 is adapted to the guide hole 315; mounting seats 316 are fixedly installed on both sides of the air outlet box 302, and threaded holes 317 are provided on the two mounting seats 316, and two positive and negative threaded screws 301 are respectively threadedly installed in the two threaded holes 317. Turning on the motor 213 can drive the output end of the motor 213 to rotate the first pulley 214. When the first pulley 214 rotates, it will drive the two second pulleys 216 to rotate by cooperating with the belt 215. The rotating second pulley 216 will drive the linkage shaft 217 to rotate, and the linkage shaft 217 will drive the blades 218 to stir in the water tank 204, so that the water in the water tank 204 can flow, so that the water can fully contact the heat guide plate 207, thereby improving the cooling effect on the water. The rotating linkage shaft 217 will drive the first bevel gear 318 to rotate. When the first bevel gear 318 rotates, it will drive the forward and reverse screw rods 301 to rotate by meshing with the second bevel gear 319. The rotating forward and reverse screw rods 301 will rotate on the two connecting seats 300. The continuously rotating forward and reverse screw rods 301 will drive the mounting seat 316 to slide reciprocatingly horizontally by cooperating with the threaded hole 317, so that the reciprocating sliding mounting seat 316 drives the air outlet box 302 to slide.In order to guide the wind blown out of the air guide box 304, two guide holes 315 are provided on the air guide box 304, the second air outlet 307 is connected to the guide hole 315, and the first air outlet 306 is adapted to the guide hole 315. When the fan 314 is turned on, the output end of the fan 314 will blow air into the connecting hole 320 on the air guide pipe 305, so that the airflow is transported to the diverter pipe 309 through the third air outlet 308 on the connecting hole 320. On the other hand, part of the airflow blown out by the fan 314 will enter one of the telescopic bellows 303 through the second air outlet 307, and finally be blown out from the second air outlet slot 312 to the vent 101. After the air guide pipe 305 is rotated, the first air outlet 306 can be connected with the telescopic bellows 303 and the first air outlet slot 311, while the second air outlet slot 312 is in a closed state. At this time, the airflow can be blown to the bottom side of the metal protective shed 403 through the first air outlet slot 311.

[0039] The snow-proof structure includes a plurality of guide rods 401, which are fixedly mounted on the inner wall of a fixed frame 400, and a movable support rod 402 is slidably mounted on the guide rod 401, and a metal protective shed 403 is fixedly mounted on the top side of the movable support rod 402, and a connecting plate 404 is fixedly mounted on one side of the movable support rod 402, and a plurality of arc-shaped blocks 405 are fixedly mounted on one side of the connecting plate 404, and an extrusion cylinder 406 is fixedly mounted on one side of the air outlet box 302, and a fixed frame 407 is fixedly mounted on the output end of the extrusion cylinder 406, and a roller 408 is rotatably mounted on the fixed frame 407, and the roller 408 is located on one side of the arc-shaped block 405, and an electric heating pipe 411 is fixedly mounted on the inner wall of the connecting hole 320.

[0040] The movable support rod 402 is provided with two guide sliding holes 409, and the two guide rods 401 are slidably installed in the two guide sliding holes 409 respectively;

[0041] A spring 410 is slidably sleeved on the guide rod 401 , one end of the spring 410 is fixedly mounted on the inner wall of the fixed frame 400 , and the other end of the spring 410 is fixedly mounted on one side of the movable support rod 402 .

[0042] An adjusting cylinder 412 is fixedly mounted on the top side of the U-shaped mounting frame 313 , a linkage rack 413 is fixedly mounted on the output end of the adjusting cylinder 412 , an adjusting toothed ring 414 is fixedly mounted on the air duct 305 , and the adjusting toothed ring 414 is meshed with the linkage rack 413 .

[0043] When used in winter when the ambient temperature is low, the fan 314 and the electric heating pipe 411 can be turned on separately. The airflow will be heated when passing through the electric heating pipe 411, and finally blown into the electrical control cabinet 100 through the second air outlet slot 312 to heat the electrical components in the electrical control cabinet 100. When used in winter, the metal protective shed 403 can be used to block snow. If there is a lot of snow on the metal protective shed 403, the regulating cylinder 412 can be turned on to make the first air outlet 306, the telescopic bellows 303, and the first air outlet slot 311 connected, while the second air outlet slot 312 is in a closed state. Then, the fan 314 and the electric heating pipe 411 are turned on to make the hot air flow pass through the first air outlet slot 311 and blow to the bottom side of the metal protective shed 403, so as to heat the metal protective shed 403 and accelerate the melting of snow. In the process, the motor 213 can be turned on to make the metal protective shed 403 achieve a reciprocating shaking effect, so as to shake off the snow on the metal protective shed 403, thereby further improving the snow removal effect.

[0044] The working principle and beneficial effects of the present invention are:

[0045] During use, the heat generated in the electrical control cabinet 100 is transferred to the heat absorbing plate 200, and the heat absorbing plate 200 transfers the heat to the heat conductive sheet 201, and the heat of the heat conductive sheet 201 is transferred to the heat conducting pipe 202. During this process, the water pump 205 can be turned on, and the water pump 205 can pump out the water in the water tank 204 and circulate it through the heat conducting pipe 202. When the water flows through the heat conducting pipe 202, it will take away the heat of the heat conducting pipe 202, so as to achieve heat exchange. Finally, the water will be at the other end of the heat conducting pipe 202. The water in the water tank 204 is returned to the water tank 204 for recycling. The water in the water tank 204 will gradually heat up during the continuous heat exchange process, and the water temperature will be transferred to the thermal conductive plate 207. During the process, the semiconductor refrigeration sheet 208 can be turned on. The semiconductor refrigeration sheet 208 can be used to cool and heat at the same time by utilizing its characteristics. The cooling surface of the semiconductor refrigeration sheet 208 is attached to the thermal conductive plate 207, thereby cooling the thermal conductive plate 207, and then cooling the water in contact with the thermal conductive plate 207. The semiconductor refrigeration sheet 208 is used to cool the water in contact with the thermal conductive plate 207. The heating surface of the heat conducting copper plate 209 is attached to the heat conducting copper plate 209, so that the heat is transferred to the heat dissipation pipe 210 and the heat dissipation fins 211. When the fan 314 is turned on, the output end of the fan 314 blows air into the connecting hole 320 on the air guide pipe 305, so that the air flow is transported to the shunt pipe 309 through the third air outlet 308 on the connecting hole 320, and then enters the air guide cover 310 through the shunt pipe 309 and blows out from the air guide cover 310. In the process, the air flow blows through the heat dissipation fins 211 and the heat dissipation fins 211 in the air guide cover 310. Tube 210, thereby taking away the heat of the heat sink fins 211 and the heat sink 210, dissipating the heat for the heating surface of the semiconductor refrigeration plate 208, and improving the cooling effect of the cooling surface of the semiconductor refrigeration plate 208. On the other hand, part of the airflow blown out by the fan 314 will enter one of the telescopic bellows 303 through the second air outlet 307, and finally be blown out from the second air outlet slot 312 to the vent 101, so that the air can quickly circulate from the two vents 101 to exchange heat in the electrical control cabinet 100.

[0046] During the heat exchange process, turning on the motor 213 can enable its output end to drive the first pulley 214 to rotate. When the first pulley 214 rotates, it will drive the two second pulleys 216 to rotate through the cooperation with the belt 215. The rotating second pulleys 216 will drive the linkage shaft 217 to rotate, and the linkage shaft 217 will drive the blades 218 to stir in the water tank 204, so that the water in the water tank 204 can flow, so that the water can fully contact with the heat guide plate 207, thereby improving the cooling effect on the water, and the continuously rotating linkage shaft 217 will drive the first bevel gear 318 to rotate, and the first bevel gear 318 will rotate. When it moves, it will drive the forward and reverse screw rods 301 to rotate by meshing with the second bevel gear 319. The rotating forward and reverse screw rods 301 will rotate on the two connecting seats 300. The continuously rotating forward and reverse screw rods 301 will drive the mounting seat 316 to slide back and forth horizontally through the cooperation with the threaded hole 317, so that the reciprocating sliding mounting seat 316 drives the air outlet box 302 to slide. When the air outlet box 302 slides, it will stretch the telescopic bellows 303 and drive the second air outlet slot 312 to slide. During the reciprocating sliding of the second air outlet slot 312, air can be evenly blown into the vent 101 to improve the heat exchange effect.

[0047] When used in winter when the ambient temperature is low, the fan 314 and the electric heating tube 411 can be turned on separately. The airflow will be heated when passing through the electric heating tube 411, and finally blown into the electrical control cabinet 100 through the second air outlet slot 312 to heat the electrical components in the electrical control cabinet 100. When used in winter, the metal protective shed 403 can be used to block snow. If there is a lot of snow on the metal protective shed 403, the adjusting cylinder 412 can be turned on. The output end of the adjusting cylinder 412 will push the linkage rack 413 to move. The moving linkage rack 413 will drive the adjusting gear ring 414 to rotate by meshing with the adjusting gear ring 414. The rotating adjusting gear ring 414 will drive the air guide duct 305 to rotate in the air guide box 304 During the rotation of the air duct 305, the third air outlet 308 and the second air outlet 307 are driven to move, and the third air outlet 308 and the second air outlet 307 are disconnected from the telescopic bellows 303 and the diverter pipe 309 respectively. At the same time, the air duct 305 drives the first air outlet 306 to communicate with the telescopic bellows 303 close to the first air outlet slot 311. At this time, the first air outlet 306 is in a connected state with the telescopic bellows 303 and the first air outlet slot 311, while the second air outlet slot 312 is in a closed state. Then, the fan 314 and the electric heating pipe 411 are turned on, so that the hot air flow passes through the first air outlet slot 311 and blows to the bottom side of the metal protective shed 403, heating the metal protective shed 403 and accelerating The snow melts, and the motor 213 is turned on during the process to make the air outlet box 302 move back and forth, so that the hot air is evenly blown onto the metal protective shed 403. The extrusion cylinder 406 can be turned on while the air outlet box 302 moves back and forth, and the output end of the extrusion cylinder 406 drives the fixed frame 407 to move, so that the movable fixed frame 407 drives the roller 408 to contact the connecting plate 404. During the reciprocating movement of the air outlet box 302, the roller 408 moves along, and the reciprocating roller 408 is squeezed on the arc-shaped stop block 405. When the arc-shaped stop block 405 is squeezed, it drives the connecting plate 404 and the corresponding movable strut 402 to move, so that the movable strut 402 drives the metal protective shed 403 to move. The movable strut 402 on the other side moves, and during the sliding process of the movable strut 402, it will slide on the guide rod 401 through the guide slide hole 409, thereby limiting the moving direction of the movable strut 402. The movable struts 402 on both sides will stretch or squeeze the corresponding springs 410 during the movement. When the moving roller 408 is detached from the arc-shaped block 405, the arc-shaped block 405 is no longer squeezed, and the spring 410 in a stretched or compressed state will pull the corresponding movable strut 402 to move and reset, and then under the reciprocating squeezing of the roller 408, the metal protective shed 403 can achieve a reciprocating shaking effect, so as to shake off the snow on the metal protective shed 403, thereby further improving the snow removal effect.

[0048] Embodiment 2, based on embodiment 1, further comprises:

[0049] An area division module is used to divide the area in the electrical control cabinet 100 that needs to be cooled by a fan into a plurality of ventilation areas, and to number the ventilation areas;

[0050] A third temperature sensor group, each ventilation area is provided with a third temperature sensor group, each ventilation area is provided with a third temperature sensor corresponding to the heat dissipation device, and the third temperature sensor is used to detect the surface temperature of the heat dissipation device where it is located;

[0051] A first wind speed sensor group, each ventilation area is provided with a group of first wind speed sensors, and each ventilation area is provided with a first wind speed sensor corresponding to the heat dissipation device, and the first wind speed sensor is used to detect the wind speed at the location thereof;

[0052] A second wind speed sensor, used to detect the wind speed in the second air outlet slot 312;

[0053] A fourth temperature sensor, used to detect the temperature of the gas in the second air outlet slot 312;

[0054] The wind speed regulating and evaluating device works periodically during the normal operation of the heat dissipation structure. The wind speed regulating and evaluating device includes:

[0055] The first control module is used to control the fan 314 to work at rated power for a first preset time each time the wind speed adjustment and evaluation device evaluates, and control the third temperature sensor group, the first wind speed sensor group, the second wind speed sensor, and the fourth temperature sensor to work multiple times within the first preset time;

[0056] A third calculation module, used for calculating the wind speed efficiency coefficient of the device to be cooled based on the first wind speed sensor and the second wind speed sensor;

[0057] ;

[0058] is the wind speed efficiency coefficient of the jth heat dissipation device in the kth ventilation area; is the average detection value of the second wind speed sensor within the first preset time period; is the average detection value of the first wind speed sensor corresponding to the j-th device to be cooled in the k-th ventilation area within the first preset time period;

[0059] A fourth calculation module, used for calculating the first ventilation wind speed corresponding to the heat dissipation device in each ventilation area based on the third calculation module and the third temperature sensor group;

[0060]

[0061] is the first ventilation wind speed corresponding to the jth heat dissipation device in the kth ventilation area; is the average detection value of the third temperature sensor corresponding to the jth heat dissipation component in the kth ventilation area within the first preset time period; is the target operating temperature of the jth heat dissipation device in the kth ventilation area; is the surface area of ​​the jth device to be cooled in the kth ventilation area; is the heat transfer coefficient of the jth heat dissipation device in the kth ventilation area; F is the cross-sectional area of ​​the air outlet of the second air outlet slot 312 perpendicular to the air outlet direction; is the total number of components that need to dissipate heat in the kth ventilation area; is the natural logarithm; e is the natural constant, is the number of components that need to dissipate heat in the kth ventilation area. Greater than the corresponding second preset value (some of the components that need to be cooled in the ventilation area may not be working or have low heat generation, resulting in Smaller, when It is necessary to ensure that the corresponding heat dissipation components can dissipate heat reliably. The bigger,

[0062] The bigger; Based on a preset function or - - Obtain wind speed correction coefficient table; The current ventilation area may be far from the second air outlet slot 312. In order to compensate for the wind speed loss, the wind speed in the second air outlet slot 312 needs to be increased. Increased) the total number of components that need heat dissipation; is the average value of the wind speed efficiency coefficient of the kth ventilation area; for The corresponding wind speed correction coefficient; A is the specific heat capacity of air at constant pressure; B is the density of air; is the average detection value of the fourth temperature sensor within the first preset time period; is the temperature of the air after it flows through the kth ventilation area within the first preset time period; is the average temperature difference of the jth heat dissipation device in the kth ventilation area within the first preset time length; W is the total number of detections by the third temperature sensor within the first preset time length; is the mth detection value of the third temperature sensor corresponding to the jth component to be cooled in the kth ventilation area within the first preset time period; is the m-1th detection value of the third temperature sensor corresponding to the jth component to be cooled in the kth ventilation area within the first preset time period; for Corresponding wind speed correction factor (based on preset function or -Wind speed correction coefficient table acquisition);

[0063] A sorting module is used to sort the first ventilation wind speeds corresponding to the heat dissipation devices in the ventilation area from large to small, and determine the maximum value of the first ventilation wind speeds corresponding to the heat dissipation devices in the ventilation area as the target ventilation wind speed;

[0064] The second control module is used to adjust the actual power of the fan 314 to the target power, and the detection value of the second wind speed sensor under the target power is the target ventilation wind speed. When the target power is greater than or equal to the current maximum allowable power of the fan 314, an alarm is issued to remind the fan to be replaced;

[0065] The beneficial effects of the above technical solution are:

[0066] 1. In the normal operation of the heat dissipation structure, because the actual temperature states of the heat dissipation components in different ventilation areas are different and the required heat dissipation amounts are also different, in order to avoid the ventilation effect of some ventilation areas failing to meet the heat dissipation requirements, it is necessary to adjust the wind speed in the second air outlet slot 312 through the wind speed adjustment and evaluation device to meet the heat dissipation requirements of all ventilation areas and ensure the reliable operation of the entire electrical control cabinet;

[0067] 2. Since different ventilation areas have different positions corresponding to the second air outlet slot 312, the wind speed efficiency coefficients are different. By calculating the wind speed efficiency coefficients that match the specific first preset time period, , and the theoretical required heat dissipation parameters of the heat dissipation components in each ventilation area within the current first preset time period , determine the theoretical cooling wind speed of the components that need cooling in each ventilation area , and based on the overall wind speed efficiency status of the entire ventilation area 、Need heat dissipation status , temperature difference state The correction is performed to finally obtain a suitable first ventilation wind speed, so as to finally select a suitable target wind speed to meet the heat dissipation requirements of all heat dissipation components as much as possible.

[0068] Embodiment 3, on the basis of Embodiment 1 or 2, a hollow shell parallel to the heat-conducting copper plate 209 is embedded in the air guide cover 310, the air outlet side of the hollow shell is at a certain distance from the heat-dissipating fins 211, the air inlet of the hollow shell is connected to the shunt pipe 309 through the air inlet main pipe, the heat-conducting copper plate 209 is divided into a plurality of heat-dissipating fin areas, each heat-dissipating fin area is provided with a plurality of heat-dissipating fins 211 at intervals; a plurality of exhaust ducts are provided in the hollow shell, the exhaust ducts face the heat-dissipating fins 211, each heat-dissipating fin area is provided with at least one group of exhaust ducts, and the exhaust ducts are provided with a first control valve; a supplementary air inlet duct is provided on the air inlet side of the exhaust duct located at the first control valve, and the supplementary air inlet duct is connected with a second control valve; the electrical control cabinet of the thermal power plant also includes:

[0069] A third wind speed sensor group, each heat sink fin area corresponds to a third wind speed sensor group, the third wind speed sensor group includes a plurality of third wind speed sensors, and the third wind speed sensor is used to detect the wind speed at the location thereof;

[0070] A first temperature sensor group, each heat sink fin area corresponds to a first temperature sensor group, the first temperature sensor group includes a plurality of first temperature sensors, and the first temperature sensors are used to detect the surface temperature of the heat sink fins 211 corresponding to the heat sink fin area;

[0071] A second temperature sensor is used to detect the gas temperature in the shunt pipe 309;

[0072] A flow sensor is used to detect the gas flow at the air outlet of the exhaust pipe;

[0073] The first evaluation device works periodically and is used to evaluate the heat dissipation effect of the heat dissipation fins 211. The first evaluation device includes:

[0074] A first determination module, configured to determine a target gas flow rate according to an average value of a detection value of the second temperature sensor within a second preset time period;

[0075] ;

[0076] is the target gas flow rate of the i-th heat sink fin area; is the average value of the detection value of the second temperature sensor within the second preset time period; A is the specific heat capacity of air at constant pressure; B is the density of air; is the temperature of the cooling gas after it flows through the i-th heat sink fin area (the first evaluation device works periodically, and a corresponding temperature sensor can be set to obtain the temperature before the first evaluation device starts evaluation in the current period); is the thermal power of the heating surface of the semiconductor refrigeration sheet 208;

[0077] The third control module is used to control the first control valve so that the detection value of each flow sensor is the target gas flow of the corresponding heat sink fin area, blow air to the corresponding heat sink fin area for a third preset time, and control the second temperature sensor, the third wind speed sensor, and the first temperature sensor to perform multiple detections within the third preset time;

[0078] A first calculation module, configured to calculate a heat dissipation evaluation coefficient based on a first temperature sensor, and determine that a heat dissipation fin region whose heat dissipation evaluation coefficient is greater than a first preset value is an abnormal heat dissipation fin region;

[0079] ;

[0080] is the heat dissipation evaluation coefficient of the i-th heat dissipation fin area; M is the total number of first temperature sensors in each heat dissipation fin area; is the average detection value of the jth first temperature sensor in the i-th heat sink fin region within the third preset time length; The target temperature after the heat sink fins dissipate heat; Indicates the maximum value; Indicates the minimum value; is all the heat sinks in the ith fin area The standard deviation of , They are the first coefficient and the second coefficient respectively (both are greater than 0 and less than 1); It reflects the average heat dissipation effect. It reflects the temperature uniformity of the heat sink fin area. When the temperature uniformity of the heat sink fin area is abnormal, it is easy to affect the working life of related devices.

[0081] an alarm module, which generates an alarm when the number of abnormal heat dissipation fin areas is greater than a first number;

[0082] A second calculation module, when the number of abnormal heat dissipation fin areas is less than the first number, calculates the supplementary flow of the abnormal heat dissipation fin areas based on the detection values ​​of the second temperature sensor, the third wind speed sensor, and the first temperature sensor within a third preset time period;

[0083] ;

[0084] is the supplementary gas flow rate of the sth abnormal heat sink fin area; is the heat transfer coefficient of the heat sink fin 211; is the surface area of ​​the heat sink fin 211 in the s-th abnormal heat sink fin region; is the average detection value of the second temperature sensor within a third preset time period; is the temperature of the cooling gas after it flows through the sth abnormal heat sink fin area (a corresponding temperature sensor may be set within the third preset time period for detection); is the average detection value of the third wind speed sensor in the sth abnormal heat dissipation fin area within the third preset time period; is the average detection value of the flow sensor within the third preset time period; D is the cross-sectional area of ​​the air outlet of the exhaust pipe perpendicular to the axial direction; is an exponential function with the natural constant e as base;

[0085] The fourth control module is used to control the operation of the second control valve corresponding to the abnormal heat dissipation fin area so that the gas flow at the outlet of the second control valve is the supplementary gas flow.

[0086] The cooling gas entering the fan can use the same cooling gas source as the supplementary air inlet duct;

[0087] The beneficial effects of the above technical solution are:

[0088] 1. By setting a hollow shell and an exhaust pipe facing each cooling fin area, heat dissipation can be achieved facing each cooling fin area, avoiding the cooling air flowing through the shunt pipe 309 and then passing through the upper cooling fin area and then flowing through the lower cooling fin area, avoiding the dirt and blockage in the upper cooling fin area affecting the ventilation volume of the lower cooling fin area, thereby affecting the cooling effect of the lower cooling fin area.

[0089] 2. Determine the target gas flow rate of each heat sink fin area according to the thermal power of the heating surface of the semiconductor refrigeration plate 208, and perform a heat dissipation test with the corresponding target gas flow rate for a third preset time (determine the target gas flow rate to ensure that the determined gas flow rate matches the actual heating state and heat dissipation parameters, and the test is more accurate) to determine the actual heat dissipation effect (heat dissipation evaluation coefficient) under the target gas flow rate, determine the abnormal heat sink fin area with abnormal heat dissipation evaluation coefficient, and alarm when the number of abnormal heat sink fin areas is large. At this time, the lower heat sink tube 210 and the heat sink fin 211 can be replaced as a whole for cleaning, so as to ensure the heat dissipation effect of the heat sink fin 211;

[0090] 3. When the number of abnormal cooling fin areas is less than the first number, the supplementary flow of the abnormal cooling fin area is calculated based on the detection values ​​of the second temperature sensor, the third wind speed sensor and the first temperature sensor within a third preset time period, and the fourth control module controls the second control valve corresponding to the abnormal cooling fin area to operate, so that the gas flow at the outlet of the second control valve is the supplementary gas flow; when there are fewer abnormal cooling fin areas, there is no need to shut down the entire electrical control cabinet to disassemble the heat pipe 210 and the cooling fin 211 for cleaning. At this time, the cooling flow of the abnormal cooling fin area can be supplemented to ensure the cooling effect. At the same time, some abnormal cooling fin areas with abnormalities can be cleaned with cleaning tools to reduce the cleaning workload.

[0091] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An electrical control cabinet for a thermal power plant, comprising an electrical control cabinet (100), characterized in that: The electrical control cabinet (100) is provided with a plurality of ventilation holes (101); a heat absorbing plate (200) is fixedly mounted on the inner wall of the electrical control cabinet (100); a heat dissipation structure is mounted on the heat absorbing plate (200); four connecting seats (300) are symmetrically fixedly mounted on the top side of the electrical control cabinet (100); a ventilation structure is mounted on the four connecting seats (300); two fixed frames (400) are symmetrically fixedly mounted on the top side of the electrical control cabinet (100); and a snowproof structure is mounted on the two fixed frames (400); The ventilation structure comprises two positive and negative threaded rods (301), two connecting seats (300) located on the same side are rotatably mounted on the same positive and negative threaded rod (301), a driving device is used to drive the two positive and negative threaded rods (301) to rotate, the two positive and negative threaded rods (301) are threadedly mounted with the same air outlet box (302), the air outlet box (302) is slidably mounted in a corresponding vent (101), the inner wall of the air outlet box (302) is provided with a first air outlet slot (311) and a second air outlet slot (312), the second air outlet slot (312) is opposite to the vent (101), One end of two telescopic bellows (303) is fixedly mounted on one side of the air outlet box (302), and the other end of the two telescopic bellows (303) is fixedly mounted with the same air guide box (304), and the two telescopic bellows (303) are both connected to the air guide box (304), and the two telescopic bellows (303) are respectively connected to the first air outlet slot (311) and the second air outlet slot (312), and an air guide pipe (305) is rotatably mounted in the air guide box (304), and the air guide pipe (305) is provided with a first air outlet (306), a second air outlet (307), and a third air outlet (318). (308) and a connecting hole (320), the connecting hole (320) is connected to the first air outlet (306), the second air outlet (307), and the third air outlet (308), the second air outlet (307) is connected to the telescopic bellows (303) on the side close to the second air outlet slot (312), the first air outlet (306) is matched with the telescopic bellows (303) on the side close to the first air outlet slot (311), a shunt pipe (309) is fixedly installed on one side of the air guide box (304), the shunt pipe (309) is connected to the air guide box (304), and the third air outlet (308) is connected to the first air outlet (306). The air guide cover (310) is fixedly mounted on one end of the shunt pipe (309), the air guide cover (310) is fixedly mounted on one side of the water tank (204), the semiconductor cooling plate (208) and the heat dissipation fins (211) are both located in the air guide cover (310), the air guide cover (310) is connected to the shunt pipe (309), a U-shaped mounting frame (313) is fixedly mounted on the top side of the U-shaped connecting frame (203), a fan (314) is fixedly mounted on the top side of the U-shaped mounting frame (313), and the output end of the fan (314) is connected to the connecting hole (320); Also includes: An area division module, used for dividing the area in the electrical control cabinet (100) that requires a fan to blow air for heat dissipation into a plurality of ventilation areas, and numbering the ventilation areas; A third temperature sensor group, each ventilation area is provided with a third temperature sensor group, each ventilation area is provided with a third temperature sensor corresponding to the heat dissipation device, and the third temperature sensor is used to detect the surface temperature of the heat dissipation device where it is located; A first wind speed sensor group, each ventilation area is provided with a group of first wind speed sensors, and each ventilation area is provided with a first wind speed sensor corresponding to the heat dissipation device, and the first wind speed sensor is used to detect the wind speed at the location thereof; A second wind speed sensor, used for detecting the wind speed in the second air outlet slot (312); a fourth temperature sensor, used for detecting the temperature of gas in the second air outlet slot (312); The wind speed regulating and evaluating device works periodically during the normal operation of the heat dissipation structure. The wind speed regulating and evaluating device includes: A first control module is used to first control the fan (314) to work at rated power for a first preset time period each time the wind speed adjustment and evaluation device evaluates, and to control the third temperature sensor group, the first wind speed sensor group, the second wind speed sensor, and the fourth temperature sensor to work multiple times within the first preset time period; A third calculation module, used for calculating the wind speed efficiency coefficient of the device to be cooled based on the first wind speed sensor and the second wind speed sensor; A fourth calculation module, used for calculating the first ventilation wind speed corresponding to the heat dissipation device in each ventilation area based on the third calculation module and the third temperature sensor group; A sorting module is used to sort the first ventilation wind speeds corresponding to the heat dissipation devices in the ventilation area from large to small, and determine the maximum value of the first ventilation wind speeds corresponding to the heat dissipation devices in the ventilation area as the target ventilation wind speed; A second control module is used to adjust the actual power of the fan (314) to a target power, wherein the detection value of the second wind speed sensor under the target power is a target ventilation wind speed; The wind speed efficiency coefficient is calculated based on the following formula: ； is the wind speed efficiency coefficient of the jth heat dissipation device in the kth ventilation area; is the average detection value of the second wind speed sensor within the first preset time period; is the average detection value of the first wind speed sensor corresponding to the j-th device to be cooled in the k-th ventilation area within the first preset time period; The first ventilation speed is calculated based on the following formula: is the first ventilation wind speed corresponding to the jth heat dissipation device in the kth ventilation area; is the average detection value of the third temperature sensor corresponding to the jth heat dissipation component in the kth ventilation area within the first preset time period; is the target operating temperature of the jth heat dissipation device in the kth ventilation area; is the surface area of ​​the jth device to be cooled in the kth ventilation area; is the heat transfer coefficient of the jth component to be cooled in the kth ventilation area; F is the cross-sectional area of ​​the air outlet of the second air outlet slot (312) perpendicular to the air outlet direction; is the total number of components that need to dissipate heat in the kth ventilation area; is the natural logarithm; e is the natural constant, is the number of components that need to dissipate heat in the kth ventilation area. is greater than a corresponding second preset value; is the average value of the wind speed efficiency coefficient of the kth ventilation area; for The corresponding wind speed correction coefficient; A is the specific heat capacity of air at constant pressure; B is the density of air; is the average detection value of the fourth temperature sensor within the first preset time period; is the temperature of the air after it flows through the kth ventilation area within the first preset time period; is the average temperature difference of the jth heat dissipation device in the kth ventilation area within the first preset time length; W is the total number of detections by the third temperature sensor within the first preset time length; is the mth detection value of the third temperature sensor corresponding to the jth component to be cooled in the kth ventilation area within the first preset time period; is the m-1th detection value of the third temperature sensor corresponding to the jth component to be cooled in the kth ventilation area within the first preset time period; for Corresponding wind speed correction factor.

2. The electrical control cabinet of a thermal power plant according to claim 1, characterized in that: The heat dissipation structure comprises a plurality of heat conducting sheets (201), the heat conducting sheets (201) being fixedly mounted on one side of a heat absorbing plate (200), a heat conducting pipe (202) being fixedly mounted on the heat conducting sheet (201), a U-shaped connecting frame (203) being fixedly mounted on one side of the electrical control cabinet (100), a water tank (204) being fixedly mounted on one side of the U-shaped connecting frame (203), one end of the heat conducting pipe (202) passing through the electrical control cabinet (100) and being fixedly mounted on one side of the water tank (204), the heat conducting pipe (202) being connected to the water tank (204), the other end of the heat conducting pipe (202) passing through the electrical control cabinet (100) and being fixedly mounted on a water pump (205), a pumping device (205) being fixedly mounted on the water pump (205) The water pump (206) is connected to the water tank (204); a temperature conducting plate (207) is fixedly mounted on the inner wall of the water tank (204); two semiconductor cooling plates (208) are fixedly mounted on one side of the temperature conducting plate (207); the cooling surfaces of the two semiconductor cooling plates (208) are both in contact with the temperature conducting plate (207); a heat conducting copper plate (209) is movably mounted on one side of the two semiconductor cooling plates (208); the heating surfaces of the two semiconductor cooling plates (208) are respectively in contact with the two heat conducting copper plates (209); a plurality of heat dissipation pipes (210) are fixedly mounted on one side of the two heat conducting copper plates (209); and a plurality of heat dissipation fins (211) are fixedly mounted on the heat dissipation pipes (210).

3. The electrical control cabinet of a thermal power plant according to claim 1, characterized in that: The snow-proof structure comprises a plurality of guide rods (401), wherein the guide rods (401) are fixedly mounted on the inner wall of the fixed frame (400), a movable support rod (402) is slidably mounted on the guide rod (401), a metal protective shed (403) is fixedly mounted on the top side of the movable support rod (402), a connecting plate (404) is fixedly mounted on one side of the movable support rod (402), a plurality of arc-shaped stop blocks (405) are fixedly mounted on one side of the connecting plate (404), an extrusion cylinder (406) is fixedly mounted on one side of the air outlet box (302), a fixing frame (407) is fixedly mounted on the output end of the extrusion cylinder (406), a roller (408) is rotatably mounted on the fixing frame (407), the roller (408) is located on one side of the arc-shaped stop block (405), and an electric heating pipe (411) is fixedly mounted on the inner wall of the connecting hole (320).

4. The electrical control cabinet of a thermal power plant according to claim 3, characterized in that: The movable support rod (402) is provided with two guide sliding holes (409), and the two guide rods (401) are slidably mounted in the two guide sliding holes (409) respectively; A spring (410) is slidably sleeved on the guide rod (401), one end of the spring (410) is fixedly mounted on the inner wall of the fixed frame (400), and the other end of the spring (410) is fixedly mounted on one side of the movable support rod (402).

5. The electrical control cabinet of a thermal power plant according to claim 1, characterized in that: An adjusting cylinder (412) is fixedly mounted on the top side of the U-shaped mounting frame (313), a linkage rack (413) is fixedly mounted on the output end of the adjusting cylinder (412), an adjusting toothed ring (414) is fixedly mounted on the air guide pipe (305), and the adjusting toothed ring (414) is meshed with the linkage rack (413).

6. The electrical control cabinet of a thermal power plant according to claim 1, characterized in that: The driving device comprises a support frame (212), the support frame (212) is fixedly mounted on the bottom side of the water tank (204), a motor (213) is fixedly mounted on the support frame (212), a first belt pulley (214) is fixedly mounted on the output end of the motor (213), a belt (215) is transmission-mounted on the first belt pulley (214), two second belt pulleys (216) are transmission-mounted on the belt (215), the two second belt pulleys (216) are both rotationally mounted on the bottom side of the water tank (204), and the two second belt pulleys (216) are rotationally mounted on the bottom side of the water tank (204). A linkage shaft (217) is fixedly mounted on each of the two linkage shafts (216), the two linkage shafts (217) are rotatably mounted on the water tank (204), a plurality of blades (218) are fixedly mounted on each of the two linkage shafts (217), and the blades (218) are located in the water tank (204); a first bevel gear (318) is fixedly mounted on one end of the linkage shaft (217), a second bevel gear (319) is fixedly mounted on one end of the forward and reverse threaded rod (301), and the second bevel gear (319) is meshed with the first bevel gear (318).

7. The electrical control cabinet of a thermal power plant according to claim 1, characterized in that: The air guide box (304) is provided with two guide holes (315), the second air outlet (307) is connected to the guide hole (315), and the first air outlet (306) is matched with the guide hole (315); Mounting seats (316) are fixedly mounted on both sides of the air outlet box (302), threaded holes (317) are provided on the two mounting seats (316), and two positive and negative threaded screw rods (301) are respectively threadedly mounted in the two threaded holes (317).

8. The electrical control cabinet of a thermal power plant according to claim 1, characterized in that: A hollow shell parallel to the heat-conducting copper plate (209) is embedded in the air guide cover (310); the air outlet side of the hollow shell is at a certain distance from the heat-dissipating fins (211); the air inlet of the hollow shell is connected to the shunt pipe (309) through the air inlet main pipe; the heat-conducting copper plate (209) is divided into a plurality of heat-dissipating fin areas; each heat-dissipating fin area is provided with a plurality of heat-dissipating fins (211) at intervals; the hollow shell is provided with a plurality of exhaust pipes, the exhaust pipes facing the heat-dissipating fins (211); each heat-dissipating fin area is provided with at least one group of exhaust pipes, and the exhaust pipes are provided with a first control valve; a supplementary air inlet pipe is provided on the air inlet side of the exhaust pipe located at the first control valve, and the supplementary air inlet pipe is connected to the second control valve; the electrical control cabinet of the thermal power plant further comprises: A third wind speed sensor group, each heat sink fin area corresponds to a third wind speed sensor group, the third wind speed sensor group includes a plurality of third wind speed sensors, and the third wind speed sensor is used to detect the wind speed at the location thereof; A first temperature sensor group, each heat sink fin area corresponds to a first temperature sensor group, the first temperature sensor group comprises a plurality of first temperature sensors, and the first temperature sensors are used to detect the surface temperature of the heat sink fins (211) corresponding to the heat sink fin area; A second temperature sensor, used for detecting the temperature of the gas in the shunt pipe (309); A flow sensor is used to detect the gas flow at the air outlet of the exhaust pipe; The first evaluation device operates periodically and is used to evaluate the heat dissipation effect of the heat dissipation fins (211). The first evaluation device comprises: A first determination module, configured to determine a target gas flow rate according to an average value of a detection value of the second temperature sensor within a second preset time period; The third control module is used to control the first control valve so that the detection value of each flow sensor is the target gas flow of the corresponding heat sink fin area, blow air to the corresponding heat sink fin area for a third preset time, and control the second temperature sensor, the third wind speed sensor, and the first temperature sensor to perform multiple detections within the third preset time; A first calculation module, configured to calculate a heat dissipation evaluation coefficient based on a first temperature sensor, and determine that a heat dissipation fin region whose heat dissipation evaluation coefficient is greater than a first preset value is an abnormal heat dissipation fin region; an alarm module, which generates an alarm when the number of abnormal heat dissipation fin areas is greater than a first number; A second calculation module, when the number of abnormal heat dissipation fin areas is less than the first number, calculates the supplementary flow of the abnormal heat dissipation fin areas based on the detection values ​​of the second temperature sensor, the third wind speed sensor, and the first temperature sensor within a third preset time period; The fourth control module is used to control the operation of the second control valve corresponding to the abnormal heat dissipation fin area so that the gas flow at the outlet of the second control valve is the supplementary gas flow.

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