High-voltage electric appliance cabinet and electric control system thereof

Abstract

The invention discloses a high-voltage electric appliance cabinet and an electric control system thereof, and belongs to the technical field of electric appliance cabinets. A high-voltage electric appliance cabinet comprises a cabinet body and a cabinet door used for sealing the cabinet body, the top of the cabinet body is provided with a heat exchange assembly used for dissipating heat in the cabinet body, and the bottom of the cabinet body is provided with a circulation assembly used for enabling air in the cabinet body to flow; the heat exchange assembly comprises a water tank fixed on the upper surface of the cabinet body and a plurality of heat pipes vertically penetrating through the surface of the water tank, the lower ends of the heat pipes are located at the top in the cabinet body, and the water tank is filled with modified water; according to the invention, the cabinet body and the cabinet door are set to be in a closed state, in the long-term operation process, sand wind and moisture are difficult to enter the cabinet body to influence electrical components, and the heat exchange assembly is adopted to carry out static heat dissipation in a heat conduction mode, so that the purpose of closed heat dissipation of the interior of the cabinet body is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical cabinets, and in particular to a high-voltage electrical cabinet and an electrical control system thereof. Background Art

[0002] There are usually many electrical modules installed inside the electrical cabinet. These electrical modules generate a lot of heat during operation. The large amount of heat accumulation will cause the temperature inside the electrical cabinet to rise, thereby affecting the normal operation of the electrical cabinet. Usually, fans and vents are used to dissipate heat, and filters are used to reduce dust from entering the electrical cabinet. However, a small amount of dust entering the cabinet does not affect the operation of the electrical cabinet.

[0003] However, after installing electrical cabinets in some windy and humid areas (such as the Sichuan Basin and Shaanxi), a large amount of wind, sand and moisture enter the cabinet through the vents, affecting the normal operation of electrical components and requiring frequent maintenance. In addition, large particles of wind and sand, when mixed with moisture, cause poor ventilation of the filter, affecting the heat dissipation of the cabinet.

[0004] Therefore, the present application proposes a fully enclosed high-voltage electrical cabinet and its electric control system that does not affect heat dissipation, thereby preventing wind, sand and moisture from entering the interior of the electrical cabinet. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art and to propose a high-voltage electrical cabinet and an electrical control system thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A high-voltage electrical cabinet comprises a cabinet body and a cabinet door for sealing the cabinet body, a heat exchange component for dissipating heat inside the cabinet body is provided on the top of the cabinet body, and a circulation component for circulating air inside the cabinet body is provided on the bottom of the cabinet body; The heat exchange assembly includes a water tank fixed on the upper surface of the cabinet and a plurality of heat pipes running through the surface of the water tank from top to bottom. The lower ends of the plurality of heat pipes are located at the top of the cabinet. The water tank is filled with modified water.

[0007] In some embodiments, the modified water includes, by weight, 0.1%-3% of an inorganic flame retardant, 0.05%-1% of an anti-corrosion agent, 0.1%-0.5% of a surfactant, 4%-6% of a stabilizer, 0.5%-2% of a graphene dispersion, and the remainder being deionized water.

[0008] In some embodiments, the circulation component includes a partition fixed on the bottom of the cabinet for dividing the cavity and an air duct fixed on the side of the cabinet, an activated carbon filter is installed on the surface of the partition, a sealing plate is hinged inside the air duct, and the sealing plate is located in the lower middle part of the air duct, and a second temperature sensor is installed at the bottom of the cabinet for detecting the temperature of the area of ​​electronic components that are prone to heat.

[0009] In some embodiments, a mounting bracket is fixed to the upper surface of the cabinet, a plurality of second fans are arranged on one side of the mounting bracket, and a cooling component for spraying water on the heat pipe is arranged on the top of the mounting bracket. The cooling component includes a water spray pipe sliding on the upper surface of the mounting bracket through two first sliders and a first solenoid valve arranged on the surface of the water spray pipe. The first slider slides on the upper surface of the mounting bracket, and the water spray pipe is driven to slide by a transmission component.

[0010] In some embodiments, the surface of the mounting frame is provided with a cleaning assembly for cleaning the wind and sand on the surface of the heat pipe. The cleaning assembly includes two guide grooves symmetrically fixed on the surface of the mounting frame and a roller brush rolling in the two guide grooves. The guide groove includes a horizontally arranged transverse groove and an inclined groove inclined upward away from the second fan end. Rollers are provided at both ends of the roller brush through key slots, and the rollers are arranged to roll inside the guide grooves.

[0011] In some embodiments, the roller brush is connected to the two first sliders through two sets of clamping components for moving along with the water spray pipe, and the roller brush is limited at the upper end of the guide groove by two sets of limiting components.

[0012] In some embodiments, the roller brush slides back and forth when moving in the guide groove through a reciprocating assembly, and the reciprocating assembly includes guide posts fixed to both ends of the roller brush and a corrugated plate fixed to the surface of the guide groove.

[0013] In some embodiments, the surface of the water tank is connected to a circulation component for allowing the modified water to flow. The circulation component includes multiple circulation pipes connected by a connecting pipe. The multiple circulation pipes are respectively located between multiple heat pipes. One end of the connecting pipe is connected to a first water pump through a reversing valve.

[0014] In some embodiments, a spray pipe is installed at a corner inside the cabinet, the upper end of the spray pipe is connected to the first water pump through a reversing valve, a second water pump for recycling modified water is fixed inside the cavity at the bottom of the cabinet, a second solenoid valve is installed at the lower end of the spray pipe, and one end of the water outlet of the second water pump is connected to the second solenoid valve through a hose.

[0015] This embodiment also provides an electronic control system for a high-voltage electrical cabinet, including a first temperature sensor, a second temperature sensor, and a smoke alarm electrically connected to a control unit. The first temperature sensor is used to detect the temperature at the top of the cabinet, the second temperature sensor is used to detect the temperature in the area of ​​electronic components that are prone to heat in the cabinet, and the smoke alarm is used to detect smoke particles in the early stages of electrical fires, triggering fire extinguishing and alarming. The control unit is electrically connected to a drive motor, a first solenoid valve, a first fan, a second fan, a first water pump, an electromagnet, a second solenoid valve, a second water pump, an electric push rod, and a reversing valve.

[0016] Compared with the prior art, the present invention provides a high-voltage electrical cabinet and an electrical control system thereof, which have the following beneficial effects.

[0017] 1. The present invention sets the cabinet body and the cabinet door in a closed state. During long-term operation, it is difficult for wind, sand and moisture to enter the cabinet body and affect the electrical components. By adopting a heat exchange component and using heat conduction to perform static heat dissipation, the purpose of closed heat dissipation inside the cabinet is achieved.

[0018] 2. The present invention further improves the heat dissipation efficiency of the heat exchange component by providing a circulation component and a second fan. By providing a first temperature sensor, when the temperature inside the cabinet exceeds a preset value, the water spray pipe sprays water onto the upper heat sink, and the water evaporates to take away the heat, thereby further improving the heat dissipation efficiency.

[0019] Other advantages, objects and features of the present invention will be described in part in the following description; and in part will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the present invention.

[0021] Figure 2 This is a side structural schematic diagram of the present invention with the cabinet panel removed.

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the heat exchange component in the present invention.

[0023] Figure 4 It is a schematic diagram of the front cross-sectional structure of the present invention.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the air duct in the present invention.

[0025] Figure 6 It is a structural schematic diagram of the cooling component and the cleaning component in the present invention.

[0026] Figure 7It is a structural schematic diagram of the guide groove in the present invention.

[0027] Figure 8 For the present invention Figure 6 Schematic diagram of the structure enlarged at point A.

[0028] Figure 9 For the present invention Figure 6 Schematic diagram of the structure enlarged at point B.

[0029] Figure 10 It is a schematic diagram of the partial explosion structure of the cleaning component in the present invention.

[0030] Figure 11 It is a structural schematic diagram of the reciprocating component in the present invention.

[0031] Figure 12 This is a schematic diagram of the cleaning component in the present invention in use.

[0032] Figure 13 Schematic diagram of the structure of the circulation component in the present invention.

[0033] Figure 14 It is a structural diagram of the electronic control system in the present invention.

[0034] In the picture: 1. Cabinet; 2. Cabinet door; 3. Heat exchange assembly; 301. Water tank; 302. Heat pipe; 303. First baffle; 4. Circulation assembly; 401. Partition; 402. Air duct; 403. First fan; 404. Activated carbon filter; 405. Sealing plate; 406. Air guide cover; 407. Second temperature sensor; 408. Electric push rod; 5. First temperature sensor; 6. Mounting bracket; 7. Second fan; 8. Cooling assembly; 801. First slider; 802. Water spray pipe; 803. First solenoid valve; 804. Transmission assembly; 8041. Guide wheel; 8042. Pull rope; 8043. Drive motor; 9. Cleaning assembly; 901. Guide groove; 902. Roller brush ;903, roller; 904, clamping assembly; 9041, second slider; 9042, fixed block; 9043, pull rod; 9044, clamping block; 9045, electromagnet; 9046, spring; 905, limit assembly; 9051, limit block; 9052, limit rod; 906, reciprocating assembly; 9061, guide column; 9062, corrugated plate; 10, smoke alarm; 11, circulation assembly; 1101, connecting pipe; 1102, circulation pipe; 12, spray pipe; 1201, second water pump; 1202, second solenoid valve; 1203, second baffle; 13, reversing valve; 14, first water pump; 15, guide plate; 16, control unit. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Reference Figure 1-14 A high-voltage electrical cabinet comprises a cabinet body 1 and a cabinet door 2 for sealing the cabinet body 1. A heat exchange component 3 for dissipating heat inside the cabinet body 1 is provided on the top of the cabinet body 1. A circulation component 4 for circulating air inside the cabinet body 1 is provided on the bottom of the cabinet body 1. The heat exchange component 3 includes a water tank 301 fixed on the upper surface of the cabinet 1 and a plurality of heat pipes 302 running through the surface of the water tank 301 from top to bottom. The plurality of heat pipes 302 are distributed in an array, and the lower ends of the plurality of heat pipes 302 are located at the top of the cabinet 1. A first baffle 303 is fixed at the edge of the upper surface of the water tank 301. The first baffle 303 is U-shaped, and the inside of the water tank 301 is filled with modified water.

[0037] It can be understood that after closing the cabinet door 2, the cabinet 1 is in a closed state. During long-term operation, it is difficult for wind, sand and moisture to enter the cabinet 1 and affect the electrical components. In order to avoid ventilation and heat dissipation causing wind, sand and moisture to enter the cabinet 1, heat conduction is used to dissipate heat. Since heat will gather upward to the top of the cabinet 1, by setting a heat exchange component 3, the good thermal conductivity of the heat pipe 302 is utilized to conduct the heat in the cabinet 1 to the outside for heat dissipation. At the same time, the modified water wraps the middle part of the heat pipe 302, and the heat pipe 302 is further heat-exchanged by the modified water, thereby improving the heat exchange efficiency and achieving the purpose of continuous heat dissipation inside the cabinet 1, which can adapt to the working environment of long-term continuous operation.

[0038] Specifically, the modified water includes, by weight, 0.1%-3% inorganic flame retardant, 0.05%-1% anti-corrosion agent, 0.1%-0.5% surfactant, 4%-6% stabilizer, 0.5%-2% graphene dispersion, and the balance is deionized water; the inorganic flame retardant is any one of nano-aluminum hydroxide and ammonium polyphosphate; the anti-corrosion agent is any one of sodium molybdate and benzotriazole; the surfactant is polyoxyethylene ether; and the stabilizer is any one of carboxymethyl cellulose and xanthan gum.

[0039] It is understandable that by adding various ingredients to deionized water to change its properties, it can be used for electrical fire extinguishing, while improving the heat conduction efficiency. The resistivity of deionized water itself is relatively high, which prevents conductivity. By adding inorganic flame retardants, the free radical chain reaction can be stopped, the combustion process can be interrupted, and the flame propagation speed can be reduced. By adding anti-corrosion agents, rust can be avoided after metal parts come into contact, and damage to other non-ignited components after fire extinguishing can be prevented, thereby reducing losses. By adding surfactants, the surface tension of water can be reduced, permeability can be increased, and fire extinguishing efficiency can be improved. By adding stabilizers, stratification can be prevented, and by adding graphene dispersion, the heat conduction efficiency of deionized water can be increased.

[0040] Specifically, the circulation component 4 includes a partition 401 fixed to the bottom of the cabinet 1 for dividing the cavity and an air duct 402 fixed to the side of the cabinet 1. The partition 401 is arranged horizontally, the air duct 402 is L-shaped, the bottom of the air duct 402 is located inside the cavity, and the side of the air duct 402 is provided with a plurality of air outlet holes for exhaust. The plurality of air outlet holes are arranged in layers, and two first fans 403 are fixed at the air inlet position at the lower end of the air duct 402. The surface of the partition 401 is sunken with a mounting groove, and the inside of the mounting groove is provided with a plurality of air outlet holes. An activated carbon filter 404 is installed, and a sealing plate 405 is hinged inside the air duct 402. The sealing plate 405 is located in the lower middle part of the air duct 402. The sealing plate 405 is driven to swing by an electric push rod 408. A plurality of air guide covers 406 are fixed on the surface of the air duct 402. The plurality of air guide covers 406 respectively correspond to each layer of air outlets. The air guide covers 406 are used to guide the wind from the plurality of air outlets to the surface of the electronic components inside the cabinet 1. A second temperature sensor 407 is installed at the bottom of the cabinet 1.

[0041] It can be understood that, by providing the circulation component 4, the first fan 403 conveys air to the inside of the air duct 402 and discharges it through multiple air outlets. At the same time, the air inside the cabinet 1 enters the cavity through the activated carbon filter 404, so that the air inside the cabinet 1 flows, and the heat generated by the electrical components is quickly separated from the electrical components and gathered on the top of the cabinet 1 for heat dissipation, thereby improving the heat dissipation efficiency. At the same time, under the action of the wind guide cover 406, the wind is guided to the surface of the electronic components, further improving the heat dissipation efficiency. By providing the activated carbon filter 404, the dust and moisture in the air are filtered when the air inside the cabinet 1 is circulated internally, thereby preventing the dust and moisture that enter the cabinet 1 after the staff regularly opens the cabinet for maintenance from accumulating on the surface of the electrical components. When installing electronic components, some electronic components that are prone to heat are concentratedly installed in the lower part of the cabinet 1, and a second temperature sensor 407 is set at the same time. When the second temperature sensor 407 detects that the temperature of the area rises to the threshold, the electric push rod 408 drives the sealing plate 405 to rotate, and the air duct 402 is blocked, so that all the wind is discharged from the lower air outlet, thereby increasing the wind pressure to concentrate the heat dissipation in the high-temperature area inside the cabinet 1 and improve the service life of the electronic components.

[0042] Specifically, a mounting frame 6 is fixed to the upper surface of the cabinet 1, and a plurality of second fans 7 are provided on one side of the mounting frame 6. The plurality of second fans 7 are all fixed inside the protective box, and the protective box is fixed on one side of the mounting frame 6; A cooling assembly 8 for spraying water on the heat pipe 302 is provided on the top of the mounting frame 6. The cooling assembly 8 includes a water spray pipe 802 sliding on the upper surface of the mounting frame 6 through two first sliders 801 and a first solenoid valve 803 provided on the surface of the water spray pipe 802. The first slider 801 slides on the upper surface of the mounting frame 6. The water inlet end of the first solenoid valve 803 is connected to the external water pipe. The water spray pipe 802 is driven to slide by a transmission assembly 804. The transmission assembly 804 includes guide wheels 8041 rotating on both sides of the mounting frame 6. The two guide wheels 8041 are connected by pull ropes 8042. There are two groups of pull ropes 8042 and they are respectively provided on the front and back surfaces of the mounting frame 6. The two first sliders 801 are respectively installed on the surfaces of the two pull ropes 8042. A driving motor 8043 is fixed on one side of the mounting frame 6. The driving motor 8043 is a double-headed motor. The two output ends of the driving motor 8043 are respectively connected to the two guide wheels 8041.

[0043] It can be understood that by setting up the second fan 7, the second fan 7 blows air to the upper end of the heat pipe 302, thereby improving the heat dissipation efficiency of the heat pipe 302; when the heat dissipation efficiency of the heat exchange component 3 is unbalanced with the heat generation of the electrical components, resulting in the temperature inside the cabinet 1 being too high, the driving motor 8043 is driven to work, thereby driving the two guide wheels 8041 to rotate at the same time, so that the two pull ropes 8042 simultaneously drive the two first sliders 801 to slide on the upper surface of the mounting frame 6, thereby driving the water spray pipe 802 to move above the heat pipe 302, spraying water on the heat pipe 302, and using the evaporation of water to reduce its surface temperature, thereby further improving the heat dissipation efficiency of the heat exchange component 3.

[0044] Specifically, the surface of the mounting frame 6 is provided with a cleaning assembly 9 for cleaning the wind-blown sand on the surface of the heat pipe 302. The cleaning assembly 9 includes two guide grooves 901 symmetrically fixed on the surface of the mounting frame 6 and a roller brush 902 rolling in the two guide grooves 901. The guide groove 901 includes a horizontally arranged transverse groove and an upwardly inclined inclined groove away from the second fan 7. The transverse groove is connected to the inclined groove. Rollers 903 are slidably provided at both ends of the roller brush 902 through key slots. The roller 903 is rotatably arranged inside the guide groove 901. A plurality of tooth blocks are respectively provided on the surface of the roller 903 and the inner wall of the guide groove 901. The roller brush 902 is connected to the two first sliders 801 through two sets of clamping assemblies 904 for moving with the water spray pipe 802. The clamping assembly 904 includes two second sliders 9041 that slide on the upper surface of the mounting frame 6. A fixed block 9042 is fixed to the opposite side of the two second sliders 9041. The fixed block 9042 is square. A pull rod 9043 slides vertically on the surface of the fixed block 9042. The lower end of the pull rod 9043 rotates on the surface of the roller 903. An electromagnet 9045 is fixed to the upper surface of the first slider 801. A clamping block 9044 that cooperates with the electromagnet 9045 slides vertically on the upper surface of the second slider 9041. A spring 9046 is fixed to the lower surface of the clamping block 9044 for pushing the clamping block 9044 to slide upward. The roller brush 902 is limited at the upper end of the guide groove 901 by two sets of limiting assemblies 905. The limiting assembly 905 includes a limiting block 9051 fixed to the end of the clamping block 9044 away from the electromagnet 9045. A limiting rod 9052 that cooperates with the limiting block 9051 is fixed to the upper surface of the mounting frame 6. When the clamping block 9044 slides upward, the limiting block 9051 is driven to be sleeved on the surface of the limiting rod 9052. The upper surface of the water tank 301 is an inclined surface, and a guide plate 15 is fixed to the side of the water tank 301 away from the second fan 7. The opening direction of the first baffle 303 faces the guide plate 15. The roller brush 902 slides back and forth when moving in the guide groove 901 through the reciprocating component 906. The reciprocating component 906 includes a guide column 9061 fixed at both ends of the roller brush 902 and a corrugated plate 9062 fixed on the surface of the guide groove 901. The corrugated plate 9062 is located at the transverse groove position of the guide groove 901 and is fixed on the upper surface of the guide groove 901. The corrugated plate 9062 is located on the side where the two guide grooves 901 are away from each other, and the raised position of one corrugated plate 9062 corresponds to the recessed position of the other corrugated plate 9062. The two corrugated plates 9062 are provided with an inclined plate near the end of the inclined groove to facilitate the entry of the guide column 9061.

[0045] It is understandable that, since the high-voltage electrical cabinet is used in an outdoor environment, when a large amount of dust accumulates on the surface of the heat pipe 302 and the water tank 301, the heat dissipation effect is greatly affected. Therefore, by providing a roller brush 902, the roller brush 902 cooperates with the water spray pipe 802 to clean the heat pipe 302, keep its surface clean, and avoid affecting its heat dissipation effect. In the normal state, the roller brush 902 is located at the upper end of the guide groove 901, and the spring 9046 pushes the block 9044 and the limit block 9051 to rise, so that the limit block 905 1 cooperates with the limiting rod 9052 to limit the position of the roller brush 902 to prevent the roller brush 902 from contacting the heat pipe 302 and affecting its ventilation and heat dissipation; when cleaning is needed, the first slider 801 and the water spray pipe 802 are close to the second slider 9041, so that the electromagnet works to generate magnetism, and the clamping block 9044 is adsorbed to the surface of the electromagnet 9045, so that the clamping block 9044 is clamped with the electromagnet 9045. At this time, the limiting block 9051 slides downward and separates from the limiting rod 9052, releasing the limit on the roller brush 902. When the transmission When the component 804 drives the first slider 801 to move, it drives the second slider 9041 to move synchronously. When the second slider 9041 slides toward the direction of the second fan 7, the roller 903 is driven to slide downward on the inner wall of the guide groove 901 through the pull rod 9043. The pull rod 9043 slides on the surface of the fixed block 9042, causing the roller brush 902 to slide into the horizontal groove. At this time, the bristles of the roller brush 902 are located between the multiple heat pipes 302. Water is sprayed through the water spray pipe 802, and the second slider 9041 drives the roller brush 902 to move With the cooperation of the roller 903 and the guide groove 901, the roller brush 902 rotates to clean the heat pipe 302. At the same time, the guide column 9061 contacts the surface of the corrugated plate 9062 through the inclined plate. Under the action of the two corrugated plates 9062 and the two guide columns 9061, the roller brush 902 slides back and forth in a small range on the surface of the two rollers 903, avoiding dead corners when cleaning the heat pipe 302; under the action of the inclined surface and the guide plate 15, the sewage generated by cleaning flows out of the upper surface of the water tank 301.

[0046] Specifically, the surface of the water tank 301 is connected to a circulation component 11 for allowing the modified water to flow. The circulation component 11 includes multiple circulation pipes 1102 connected through a connecting pipe 1101. The multiple circulation pipes 1102 are respectively located between the multiple heat pipes 302, and the ends of the multiple circulation pipes 1102 away from the connecting pipe 1101 are connected to the upper surface of the water tank 301. A reversing valve 13 is installed at one end of the connecting pipe 1101, and one end of the reversing valve 13 is connected to the water outlet of the first water pump 14. The water inlet of the first water pump 14 is connected to one side of the water tank 301. A spray pipe 12 is installed at a corner inside the cabinet 1. Multiple nozzles are provided on the surface of the spray pipe 12, and the upper end of the spray pipe 12 is connected to the first water pump 14 through the reversing valve 13.

[0047] It can be understood that by setting up the circulation component 11, the water pump is operated to draw the modified water in the water tank 301 from a lower place and return it to the inside of the water tank 301 from the top of the water tank 301 through the connecting pipe 1101 and the circulation pipe 1102, so that the modified water flows, improving the heat absorption effect on the heat pipe 302. At the same time, the flowing modified water further avoids stratification; by setting the circulation pipe 1102 between multiple heat pipes 302, the second fan 7 dissipates heat to the heat pipe 302 while dissipating heat to the modified water in the circulation pipe 1102, thereby further dissipating heat to the modified water; when the electrical components inside the cabinet 1 catch fire, the modified water is flowed to the spray pipe 12 through the reversing valve 13, so that the spray pipe 12 sprays the modified water in the form of mist into the inside of the cabinet 1, thereby achieving the purpose of rapid fire extinguishing.

[0048] Specifically, a second water pump 1201 is fixed inside the cavity at the bottom of the cabinet 1, a second solenoid valve 1202 is installed at the lower end of the spray tube 12, one end of the water outlet of the second water pump 1201 is connected to the second solenoid valve 1202 through a hose, a second baffle 1203 is fixed in the middle of the cavity, and a gap is provided between the upper end of the second baffle 1203 and the partition 401, a hose is provided at the water inlet of the second water pump 1201, the other end of the hose is provided on the side of the cavity away from the air duct 402, and a slope is provided on the part of the bottom of the cavity away from the air duct 402, and a drain valve is installed at the bottom of the side of the cabinet 1, and the slope is used to direct the modified water entering the cavity to the drain valve.

[0049] It is understandable that when an electrical appliance catches fire, the fire is difficult to extinguish quickly if the power is not turned off in time. The modified water in the water tank 301 is limited. If the modified water is used up and the electrical cabinet is not powered off in time, it is easy to reignite. Therefore, after the spray pipe 12 sprays the modified water into the electrical cabinet, the excess modified water is filtered through the activated carbon filter 404 and flows into the cavity, and the reversing valve 13 closes the upper end of the spray pipe 12, and the second solenoid valve 1202 opens the lower end of the spray pipe 12. The water in the cavity is transported to the spray pipe 12 through the second water pump 1201 to continuously spray the inside of the cabinet 1, and the temperature in the cabinet 1 is controlled to avoid reignition. By setting the second baffle 1203, the modified water can be blocked to prevent it from spreading throughout the cavity. By setting the drain valve, the modified water in the cavity can be easily discharged.

[0050] The present invention also provides an electronic control system for a high-voltage electrical cabinet, including a first temperature sensor 5, a second temperature sensor 407 and a smoke alarm 10 electrically connected to a control unit 16. The first temperature sensor 5 is used to detect the temperature at the top of the cabinet 1, the second temperature sensor 407 is used to detect the temperature in the area of ​​electronic components that are prone to heat in the cabinet 1, and the smoke alarm 10 is used to detect smoke particles in the early stage of an electrical fire, triggering fire extinguishing and alarming. The drive motor 8043, the first solenoid valve 803, the first fan 403, the second fan 7, the first water pump 14, the electromagnet 9045, the second solenoid valve 1202, the second water pump 1201, the electric push rod 408 and the reversing valve 13 are all electrically connected to the control unit 16.

[0051] It can be understood that the temperature inside the cabinet 1 is detected by the first temperature sensor 5. When the temperature inside the cabinet 1 is higher than 45 degrees, the control unit 16 controls the first fan 403 and the second fan 7 to start. By setting the second fan 7, the second fan 7 blows air to the heat pipe 302, thereby improving the heat dissipation efficiency of the heat pipe 302, and the first fan 403 blows air to the air duct 402 to make the cabinet 1 circulate internally; when the temperature detected by the second temperature sensor 407 exceeds the threshold, the electric push rod 408 drives the sealing plate 405 to rotate, so that the sealing plate 405 separates the air duct 402, so that the air outlet towards the heat-prone electrical components is discharged separately, thereby increasing the wind pressure and improving the heat dissipation; when the temperature inside the electrical cabinet is greater than 60 degrees, the drive motor 8043 and the first solenoid valve 803 are started, and the heat pipe 302 is cooled by the water spray pipe 802, thereby accelerating the heat dissipation efficiency inside the cabinet 1. If the temperature does not drop within 20 minutes, an abnormal alarm is triggered; when the temperature inside the cabinet 1 is lower than 60 degrees, the electric push rod 408 drives the sealing plate 405 to rotate, so that the sealing plate 405 separates the air duct 402, and the air is discharged separately from the air outlet towards the heat-prone electrical components, thereby increasing the wind pressure and improving the heat dissipation; when the temperature inside the electrical cabinet is greater than 60 degrees, the drive motor 8043 and the first solenoid valve 803 are started, and the heat pipe 302 is cooled by the water spray pipe 802, thereby accelerating the heat dissipation efficiency inside the cabinet 1. If the temperature does not drop within 20 minutes, an abnormal alarm is triggered; when the temperature inside the cabinet 1 is lower than 60 degrees, the electric push rod When the temperature is above 45 degrees, the control unit 16 controls the first fan 403 and the second fan 7 to be turned off to reduce energy consumption; by setting a smoke alarm 10, when a fire occurs inside the cabinet 1, the smoke alarm 10 triggers a fire alarm, and at the same time, by activating the reversing valve 13, the modified water in the water tank 301 is sprayed out through the spray pipe 12 to extinguish the fire in the cabinet 1 in time. When the modified water in the water tank 301 is used up and the temperature inside the cabinet 1 is still too high, the reversing valve 13 is used to spray the water on the spray pipe 12. The end is closed, the second solenoid valve 1202 opens the lower end of the spray pipe 12, and the water in the cavity is transported to the spray pipe 12 through the second water pump 1201 to continuously spray the inside of the cabinet 1, thereby controlling the temperature inside the cabinet 1 to avoid the re-ignition phenomenon; the control unit 16 controls the drive motor 8043 and the solenoid valve to work regularly, and at the same time starts the electromagnet 9045, so that the roller brush 902 moves with the water spray pipe 802, and the heat pipe 302 is cleaned regularly by the roller brush 902 and the water spray pipe 802.

[0052] Example 1: Different from the above embodiment, the modified water includes, by weight, 0.1% inorganic flame retardant, 0.05% anti-corrosion agent, 0.1% surfactant, 4% stabilizer, 0.5% graphene dispersion, and the balance is deionized water; the inorganic flame retardant is nano-aluminum hydroxide; the anti-corrosion agent is sodium molybdate; the surfactant is polyoxyethylene ether; and the stabilizer is carboxymethyl cellulose.

[0053] Example 2: Different from the above embodiment, the modified water includes, by weight, 3% inorganic flame retardant, 1% anti-corrosion agent, 0.5% surfactant, 6% stabilizer, 2% graphene dispersion, and the balance is deionized water; the inorganic flame retardant is ammonium polyphosphate; the anti-corrosion agent is benzotriazole; the surfactant is polyoxyethylene ether; and the stabilizer is xanthan gum.

[0054] Example 3: Different from the above embodiment, the modified water includes, by weight, 2% inorganic flame retardant, 0.5% anti-corrosion agent, 0.3% surfactant, 5% stabilizer, 1% graphene dispersion, and the balance is deionized water; the inorganic flame retardant is nano-aluminum hydroxide; the anti-corrosion agent is benzotriazole; the surfactant is polyoxyethylene ether; and the stabilizer is carboxymethyl cellulose.

[0055] Comparative Example 1: Different from the above embodiment, the modified water includes 100% deionized water by weight.

[0056] The comparison results of the embodiment and the comparative example are shown in the following table: Through comparison, it was found that after adding inorganic flame retardants, anti-corrosion agents, surfactants, stabilizers and graphene dispersion to deionized water, the resistivity, corrosion rate and fire extinguishing efficiency of deionized water were significantly improved, and it can be used for electrical fire extinguishing at the same time as a heat conduction medium.

[0057] In the present invention, by setting the cabinet body 1 and the cabinet door 2 to a closed state, during long-term operation, it is difficult for wind, sand and moisture to enter the interior of the cabinet body 1 and affect the electrical components; by adopting the method of heat conduction for static heat dissipation, the purpose of closed heat dissipation inside the cabinet body 1 is achieved, and the temperature inside the cabinet body 1 is detected by the first temperature sensor 5. When the temperature inside the cabinet body 1 is higher than 45 degrees, the control unit 16 controls the first fan 403 and the second fan 7 to start, and by setting the second fan 7, the second fan 7 is made to blow air to the heat pipe 302, thereby improving the heat dissipation efficiency of the heat pipe 302; the air at the bottom of the cabinet body 1 is transported to the inside of the air duct 402 by the first fan 403 and discharged through multiple air outlets. At the same time, the air inside the cabinet body 1 Air enters the cavity through the vents, thereby allowing the air inside the cabinet 1 to flow, allowing the heat generated by the electrical components to quickly separate from the electrical components and gather on the top of the cabinet 1 for heat dissipation, thereby improving the heat dissipation efficiency. When the temperature inside the electrical cabinet is greater than 60 degrees, the drive motor 8043 and the first solenoid valve 803 are started, and the drive motor 8043 drives the two guide wheels 8041 to rotate simultaneously, so that the two pull ropes 8042 simultaneously drive the two first sliders 801 to slide on the upper surface of the mounting frame 6, driving the water spray pipe 802 to move above the heat pipe 302, and the first solenoid valve 803 allows water to flow through the water spray pipe 802 to spray water on the heat pipe 302, and the evaporation of water is used to reduce its surface temperature, thereby further improving the heat dissipation of the heat exchange component 3 Efficiency, if the temperature does not drop within 20 minutes, an abnormal alarm is triggered; when the heat pipe 302 needs to be cleaned, the transmission component 804 drives the first slider 801 and the water spray pipe 802 to approach the second slider 9041, and then the electromagnet is operated to generate magnetism, and the block 9044 is adsorbed to the surface of the electromagnet 9045, so that the block 9044 is engaged with the electromagnet 9045, and the first slider 801 drives the roller brush 902 to slide into the horizontal groove. At this time, the bristles of the roller brush 902 are located between the multiple heat pipes 302, and water is sprayed through the water spray pipe 802. The second slider 9041 drives the roller brush 902 to move, and with the cooperation of the roller 903 and the guide groove 901, the roller brush 902 rotates, thereby cleaning the heat pipe 302. Under the action of the flow plate 15, the sewage generated by cleaning flows out of the upper surface of the water tank 301, so that the heat pipe 302 remains clean and avoids affecting its heat dissipation effect; when a fire occurs inside the cabinet 1, the smoke alarm 10 triggers the fire alarm. At the same time, by starting the reversing valve 13, the modified water in the water tank 301 is sprayed out through the spray pipe 12, and the fire inside the cabinet 1 is extinguished in time. When the modified water in the water tank 301 is used up and the temperature inside the cabinet 1 is still too high, the upper end of the spray pipe 12 is closed by the reversing valve 13, and the lower end of the spray pipe 12 is opened by the second solenoid valve 1202. The water in the cavity is transported to the spray pipe 12 by the second water pump 1201 to continuously spray the inside of the cabinet 1, thereby controlling the temperature inside the cabinet 1 to avoid re-ignition.

[0058] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

[0059] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0060] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A high-voltage electrical cabinet, characterized in that: The cabinet comprises a cabinet body (1) and a cabinet door (2) for sealing the cabinet body (1); a heat exchange component (3) for dissipating heat from the interior of the cabinet body (1) is provided on the top of the cabinet body (1); and a circulation component (4) for circulating air inside the cabinet body (1) is provided on the bottom of the cabinet body (1); The heat exchange assembly (3) comprises a water tank (301) fixed on the upper surface of the cabinet (1) and a plurality of heat pipes (302) running through the surface of the water tank (301) from top to bottom, wherein the lower ends of the plurality of heat pipes (302) are located at the top of the cabinet (1), and the interior of the water tank (301) is filled with modified water.

2. A high-voltage electrical cabinet according to claim 1, characterized in that: The modified water comprises, by weight, 0.1%-3% of an inorganic flame retardant, 0.05%-1% of an anticorrosive agent, 0.1%-0.5% of a surfactant, 4%-6% of a stabilizer, 0.5%-2% of a graphene dispersion, and the balance being deionized water.

3. A high-voltage electrical cabinet according to claim 1, characterized in that: The circulation component (4) comprises a partition (401) fixed to the bottom of the cabinet (1) for dividing the cavity and an air duct (402) fixed to the side of the cabinet (1), an activated carbon filter (404) being installed on the surface of the partition (401), a sealing plate (405) being hinged inside the air duct (402), and the sealing plate (405) being located at a lower middle position of the air duct (402), and a second temperature sensor (407) for detecting the temperature of an area of ​​an easily heated electronic component being installed at the bottom of the cabinet (1).

4. A high-voltage electrical cabinet according to claim 1, characterized in that: A mounting frame (6) is fixed on the upper surface of the cabinet (1), a plurality of second fans (7) are arranged on one side of the mounting frame (6), a cooling component (8) for spraying water on the heat pipe (302) is arranged on the top of the mounting frame (6), the cooling component (8) comprises a water spray pipe (802) sliding on the upper surface of the mounting frame (6) via two first sliders (801) and a first solenoid valve (803) arranged on the surface of the water spray pipe (802), the first slider (801) sliding on the upper surface of the mounting frame (6), and the water spray pipe (802) driven to slide by a transmission component (804).

5. A high-voltage electrical cabinet according to claim 4, characterized in that: The surface of the mounting frame (6) is provided with a cleaning assembly (9) for cleaning sand on the surface of the heat pipe (302), the cleaning assembly (9) comprising two guide grooves (901) symmetrically fixed on the surface of the mounting frame (6) and a roller brush (902) rolling in the two guide grooves (901), the guide groove (901) comprising a horizontally arranged transverse groove and an inclined groove inclined upward away from the second fan (7), rollers (903) slidingly provided at both ends of the roller brush (902) through key slots, the rollers (903) rollingly arranged inside the guide grooves (901).

6. A high-voltage electrical cabinet according to claim 5, characterized in that: The roller brush (902) is connected to the two first sliders (801) via two sets of clamping assemblies (904) and is used to move following the water spray pipe (802). The roller brush (902) is limited at the upper end of the guide groove (901) via two sets of limiting assemblies (905).

7. A high-voltage electrical cabinet according to claim 5, characterized in that: The roller brush (902) slides back and forth when moving in the guide groove (901) via a reciprocating assembly (906), wherein the reciprocating assembly (906) comprises guide posts (9061) fixed at both ends of the roller brush (902) and a corrugated plate (9062) fixed on the surface of the guide groove (901).

8. The high-voltage electrical cabinet according to claim 1, characterized in that: The surface of the water tank (301) is connected to a circulation assembly (11) for flowing the modified water. The circulation assembly (11) comprises a plurality of circulation pipes (1102) connected via a connecting pipe (1101). The plurality of circulation pipes (1102) are respectively located between the plurality of heat pipes (302). One end of the connecting pipe (1101) is connected to a first water pump (14) via a reversing valve (13).

9. A high-voltage electrical cabinet according to claim 8, characterized in that: A spray pipe (12) is installed at a corner inside the cabinet (1), and the upper end of the spray pipe (12) is connected to the first water pump (14) through a reversing valve (13). A second water pump (1201) for recycling modified water is fixed inside the cavity at the bottom of the cabinet (1). A second solenoid valve (1202) is installed at the lower end of the spray pipe (12), and one end of the water outlet of the second water pump (1201) is connected to the second solenoid valve (1202) through a hose.

10. An electric control system for a high-voltage electrical cabinet according to any one of claims 1 to 9, characterized in that: The invention comprises a first temperature sensor (5), a second temperature sensor (407) and a smoke alarm (10) electrically connected to a control unit (16), wherein the first temperature sensor (5) is used to detect the temperature of the top of the cabinet (1), the second temperature sensor (407) is used to detect the temperature in the area of ​​the electronic components that are prone to heat in the cabinet (1), and the smoke alarm (10) is used to detect smoke particles in the early stage of an electrical fire, triggering fire extinguishing and alarming. The control unit (16) is electrically connected to a drive motor (8043), a first solenoid valve (803), a first fan (403), a second fan (7), a first water pump (14), an electromagnet (9045), a second solenoid valve (1202), a second water pump (1201), an electric push rod (408) and a reversing valve (13).

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