Suspension type anti-creeping intelligent distribution box and use method thereof

Abstract

The invention belongs to the technical field of power distribution boxes, and particularly relates to a suspension type anti-creeping intelligent power distribution box and a using method thereof.The suspension type anti-creeping intelligent power distribution box comprises a cabinet body, a cabinet door and electrical elements arranged in the cabinet body, suspension feet are fixedly arranged on the two sides of the top and the two sides of the bottom of the cabinet body, and the suspension type anti-creeping intelligent power distribution box further comprises a hollow air suction plate fixedly arranged on the outer side face of the cabinet door; and a plurality of air suction cavities which are uniformly distributed are formed in the cabinet door. The temperature is accurately monitored through the thermistor, heat dissipation is intelligently regulated and controlled in combination with the gas flow adjusting mechanism, and efficient heat dissipation and energy saving are achieved; meanwhile, if the temperature of a local circuit is sharply increased, cooling can be quickly responded, the electric leakage condition is effectively avoided, and maintenance is reminded; in addition, the sulfur hexafluoride gas injection mechanism can be used for emergently cooling, so that faults are restrained; in addition, the exhausted hot air can ensure that the suspension legs are stable in a low-temperature environment, and the safety, the stability and the economical efficiency of the distribution box are integrally improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of distribution boxes, and particularly relates to a hanging anti-electric leakage intelligent distribution box and its usage method. Background Art

[0002] In modern power supply systems, distribution boxes, as key devices for distributing electric energy, controlling, and protecting circuits, are widely used in various places. Hanging distribution boxes are widely used in scenarios such as commercial outdoor buildings and industrial outdoor factories due to their advantages of convenient installation and space saving.

[0003] For existing hanging distribution cabinets, due to the integration of numerous electrical components inside, the circuit connections are intricate, which significantly increases the risk of electric leakage. Therefore, an anti-electric leakage intelligent distribution box is needed. For example, the publication number: CN211046118U discloses a hanging anti-electric leakage intelligent distribution box. However, a large number of practices and studies have shown that before electric leakage occurs in the circuit inside the distribution box, there is usually a phenomenon of a sharp increase in local temperature (the temperature increase is due to problems such as poor contact and overload in the circuit, which cause an increase in resistance. According to Joule's law, an increase in resistance makes more heat generated when current passes through). If measures can be taken to reduce the temperature when the local circuit temperature just starts to rise sharply, the occurrence of electric leakage can be prevented. However, current hanging distribution cabinets often lack an effective monitoring and timely response mechanism for such temperature changes. They can neither accurately monitor local overheating nor quickly and effectively reduce the local temperature, which increases the possibility of electric leakage.

[0004] Therefore, a hanging anti-electric leakage intelligent distribution box and its usage method are proposed. Summary of the Invention

[0005] The purpose of the present invention is to address the above problems and provide a hanging anti-electric leakage intelligent distribution box and its usage method.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A hanging anti-electric leakage intelligent distribution box includes a cabinet body, a cabinet door, and electrical components arranged inside the cabinet body. Hanging feet are fixedly provided on both sides of the top and both sides of the bottom of the cabinet body. It further includes: A hollow air suction plate is fixedly arranged on the outer side surface of the cabinet door. A plurality of evenly distributed air suction cavities are arranged inside the cabinet door, and a plurality of air suction holes are opened on the inner side surface of the cabinet door at positions corresponding to the plurality of air suction cavities; An air suction heat dissipation mechanism is arranged between the side wall of the cabinet body and the side surface of the hollow air suction plate; A plurality of thermistors are fixedly embedded on the inner side surface of the cabinet door, and on the side of each thermistor close to each air suction hole. The plurality of thermistors monitor the temperature of the electrical components in real time; A plurality of gas flow regulating mechanisms are all arranged inside the hollow air suction plate, and the plurality of gas flow regulating mechanisms respectively correspond to the positions of the plurality of air suction cavities; A plurality of sulfur hexafluoride gas injection mechanisms are all fixedly arranged on the inner side surface of the cabinet door, and the sulfur hexafluoride gas injection mechanisms are arranged facing the surface of the electrical component; A sulfur hexafluoride gas filtering mechanism is fixedly arranged on the side wall of the air suction and heat dissipation mechanism, and the air suction and heat dissipation mechanism corresponds to the position of the air outlet of the air suction and heat dissipation mechanism; A PLC controller is fixedly arranged inside the cabinet body, and the air suction and heat dissipation mechanism, the thermistor, the gas flow regulating mechanism and the sulfur hexafluoride gas injection mechanism are all electrically connected to the PLC controller.

[0007] Preferably, the air suction and heat dissipation mechanism includes an air suction fan fixedly arranged on the inner side wall of the cabinet body. A soft tube is fixedly arranged at the input end of the air suction fan. A plurality of uniformly distributed first rigid tubes are symmetrically and fixedly arranged on the side surface of the hollow air suction plate. One end of each of the plurality of first rigid tubes is fixedly provided with the same second rigid tube. The end of the soft tube far away from the air suction fan is fixedly connected to the tube wall of the second rigid tube.

[0008] Preferably, the gas flow regulating mechanism includes a trapezoidal regulating block. A trapezoidal regulating hole communicated with the air suction cavity is formed at the contact part between the hollow air suction plate and the cabinet door. The trapezoidal regulating block is located inside the trapezoidal regulating hole. Sliders are fixedly arranged at the top and bottom of the side wall of the trapezoidal regulating block. A slide bar matched with the two sliders is fixedly arranged inside the hollow air suction plate. A spring is sleeved on the rod wall of the slide bar, and two ends of the spring are respectively fixedly connected to the side wall of the slider and the side wall of the hollow air suction plate. A permanent magnet block is fixedly arranged on the side wall of the trapezoidal regulating block, and an electromagnet corresponding to the position of the permanent magnet block is fixedly arranged on the inner side wall of the hollow air suction plate.

[0009] Preferably, the sulfur hexafluoride gas injection mechanism includes a storage cylinder fixedly arranged on the inner side surface of the cabinet door. Injection tubes are fixedly arranged on both sides of the storage cylinder. A plurality of uniformly distributed injection holes are formed in the tube walls of the two injection tubes. An electric push rod is fixedly arranged on the inner side wall of the storage cylinder. A push piston is fixedly arranged at the moving end of the electric push rod, and the push piston is slidably arranged inside the storage cylinder.

[0010] Preferably, the end of the injection tube far away from the storage cylinder adopts a closed structure. A first electromagnetic valve is arranged at the position corresponding to the tube wall of the injection tube and close to the storage cylinder. An air injection head is arranged on one side of the storage cylinder facing the inside of the cabinet body.

[0011] Preferably, the sulfur hexafluoride gas filtering mechanism includes a filtering box fixedly arranged on the side wall of the air suction fan. A metal-organic framework material layer is arranged inside the filtering box. First exhaust pipes are fixedly arranged at the top and bottom of the filtering box. Hollow blowing plates are fixedly arranged at the top and bottom of the cabinet body. One ends of the two first exhaust pipes away from the filtering box are respectively fixedly connected to the side walls of the two hollow blowing plates. Blowing holes are formed in one sides of the two hollow blowing plates facing the hanging feet.

[0012] Preferably, a breathable material bed is arranged inside the filtering box. A magnet plate clamped with the top of the filtering box is arranged on the top of the breathable material bed. The magnet plate is magnetically adsorbed with the filtering box. A second exhaust pipe is fixedly arranged on one side of the filtering box. A second solenoid valve is arranged on the pipe wall of the second exhaust pipe. Third solenoid valves are arranged on the pipe walls of the two first exhaust pipes.

[0013] Preferably, a mounting plate is fixedly arranged inside the cabinet body. The electrical components and the PLC controller are both fixedly arranged on the surface of the mounting plate.

[0014] A using method of a suspended anti-electric leakage intelligent distribution box includes the following steps: S1. First, select a hanging position for the distribution cabinet and drive nails to complete the hanging installation of the cabinet body. Then, connect the power supply of the distribution cabinet. S2. When the electrical components are working normally, the hot air generated by the electrical components inside the cabinet body is discharged by the arranged air suction fan and air suction holes. The discharged hot air is blown through the first exhaust pipe, towards the hollow blowing plate and the blowing holes onto the surface of the hanging feet. At the same time, multiple thermistors on the cabinet door can comprehensively detect the gas temperature inside the cabinet body. When gases at different temperatures pass through the surfaces of the thermistors, the resistance values of the thermistors increase by different degrees, so that the parts where the electrical components inside the cabinet body generate heat and the parts where the electrical components do not work can be determined. At this time, the thermistors feed back electrical signals to the PLC controller. The PLC controller controls the operation of the electromagnet, so that the distance between the trapezoidal adjusting block and the trapezoidal adjusting hole is adjusted, and the suction intensity of the corresponding air suction holes can be adaptively adjusted. At the same time, the suction intensity of the air suction holes in the area of the electrical components that are not working is weakened. S3. When the local circuit temperature of the electrical components rises sharply, the thermistors at the corresponding positions detect the parts where the temperature rises sharply. The PLC controller will immediately increase the suction intensity of the air suction holes at this position. At the same time, the PLC controller will also correspondingly increase the power of the air suction fan. In addition, the built-in alarm of the PLC controller is started. S4. When urgently cooling the internal circuit of the cabinet body, the PLC controller will start the electric push rods at the corresponding positions and open the first electromagnetic valves at the corresponding positions. When the electric push rods extend, they drive the push pistons to move inside the storage cylinders, and can spray the sulfur hexafluoride gas stored inside the storage cylinders through the spray pipes and spray holes; S5. After the sulfur hexafluoride gas is sprayed and contacts the local circuit, it will disperse in the surrounding air. After the spraying action ends, the air suction heat dissipation mechanism and the sulfur hexafluoride gas filtration mechanism will recycle the sulfur hexafluoride gas.

[0015] Compared with the existing technology, the beneficial effects of the present invention are as follows: Through the provided air suction heat dissipation mechanism, thermistor and gas flow regulation mechanism, the gas temperature inside the cabinet body can be comprehensively detected. According to the influence of different temperatures on the resistance value of the thermistor, the heat generation parts and non-working parts of the electrical components can be accurately determined. Then, in cooperation with the gas flow regulation mechanism, using the electrical signal fed back by the thermistor to the PLC controller, the suction intensity of the corresponding air suction holes can be intelligently adjusted to efficiently dissipate heat from the working electrical components, and at the same time weaken the air suction intensity in the area of non-working components, which not only ensures the heat dissipation effect but also reduces energy consumption; at the same time, when the temperature of the local circuit of the electrical component rises sharply, the PLC controller immediately increases the air suction intensity of the air suction holes at this position and proportionally increases the power of the air suction fan to quickly reduce the temperature of the local circuit, effectively avoiding the occurrence of electric leakage. At the same time, the built-in alarm is activated to timely remind the staff to carry out maintenance and ensure the safe operation of the distribution box.

[0016] Through the provided sulfur hexafluoride gas injection mechanism, when urgently cooling, the PLC controller starts the sulfur hexafluoride gas injection mechanism. The sprayed sulfur hexafluoride gas, relying on its excellent arc extinguishing performance, high dielectric strength and good heat dissipation ability, cuts off potential arcs, enhances insulation, reduces temperature, effectively curbs the development of faults, prevents electric leakage and the expansion of faults, and ensures the stable operation of the equipment and the power system; at the same time, the sulfur hexafluoride gas after spraying is inhaled by the air suction heat dissipation mechanism, adsorbed and separated through the metal-organic framework material layer in the sulfur hexafluoride gas filtration mechanism, and then by means of temperature-controlled desorption, the desorbed sulfur hexafluoride gas is re-added to the storage cylinder for recycling, which not only reduces the use cost but also meets the environmental protection requirements.

[0017] Through the provided sulfur hexafluoride gas filtration mechanism, the hot air discharged by the air suction heat dissipation mechanism is blown towards the hollow air blowing plate through the first exhaust pipe of the sulfur hexafluoride gas filtration mechanism, and then blown towards the surface of the suspension feet through the air blowing holes. In cold seasons and low-temperature regions, the suspension feet can be kept at a certain temperature, avoiding the reduction of mechanical strength of metal parts due to cold brittleness phenomenon and preventing safety hazards such as fracture and loosening, and ensuring the stability of the suspension of the power distribution cabinet. Description of the Drawings

[0018] Figure 1 It is a three-dimensional view of a hanging type anti-electric leakage intelligent distribution box provided by the present invention; Figure 2 It is a Figure 1 side three-dimensional view of a hanging type anti-electric leakage intelligent distribution box provided by the present invention; Figure 3 It is a schematic structural view of the opened cabinet door of a hanging type anti-electric leakage intelligent distribution box provided by the present invention; Figure 4 It is a Figure 3 schematic structural view of the upper part of the cabinet door of a hanging type anti-electric leakage intelligent distribution box provided by the present invention; Figure 5 It is a three-dimensional view of a sulfur hexafluoride gas injection mechanism of a hanging type anti-electric leakage intelligent distribution box provided by the present invention; Figure 6 It is a three-dimensional view of the opened filter box of a hanging type anti-electric leakage intelligent distribution box provided by the present invention; Figure 7 It is a three-dimensional view of a hollow air blowing plate of a hanging type anti-electric leakage intelligent distribution box provided by the present invention.

[0019] In the figure: 1 cabinet body, 2 cabinet door, 3 electrical components, 4 hanging feet, 5 hollow air suction plate, 6 air suction cavity, 7 air suction holes, 8 air suction and heat dissipation mechanism, 81 air suction fan, 82 flexible pipe, 83 first rigid pipe, 84 second rigid pipe, 9 thermistor, 10 gas flow regulating mechanism, 101 trapezoidal regulating block, 102 trapezoidal regulating hole, 103 slider, 104 slide bar, 105 spring, 106 permanent magnet block, 107 electromagnet block, 11 sulfur hexafluoride gas injection mechanism, 111 storage cylinder, 112 injection pipe, 113 injection hole, 114 electric push rod, 115 pushing piston, 116 first solenoid valve, 12 sulfur hexafluoride gas filtering mechanism, 121 filter box, 122 metal-organic framework material layer, 123 first exhaust pipe, 124 hollow air blowing plate, 125 air blowing holes, 126 breathable material bed, 127 second exhaust pipe, 128 second solenoid valve, 129 third solenoid valve, 13 PLC controller, 14 mounting plate. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0021] As Figures 1-7 shown, a hanging type anti-electric leakage intelligent distribution box and its usage method include a cabinet body 1, a cabinet door 2, and electrical components 3 arranged inside the cabinet body 1. Hanging feet 4 are fixedly provided on both sides of the top and both sides of the bottom of the cabinet body 1, and further include: The hollow air suction plate 5 is fixedly arranged on the outer side surface of the cabinet door 2. A plurality of uniformly distributed air suction cavities 6 are arranged inside the cabinet door 2. A plurality of air suction holes 7 are opened at positions on the inner side surface of the cabinet door 2 corresponding to the positions of the plurality of air suction cavities 6. The air suction holes 7 are in multiple groups, and each group of air suction holes 7 is connected to the same air suction cavity 6; The air suction and heat dissipation mechanism 8 is arranged between the side wall of the cabinet body 1 and the side surface of the hollow air suction plate 5. The air suction and heat dissipation mechanism 8 includes an air suction fan 81 fixedly arranged on the inner side wall of the cabinet body 1. A soft pipe 82 is fixedly arranged at the input end of the air suction fan 81. A plurality of uniformly distributed first rigid pipes 83 are symmetrically and fixedly arranged on the side surface of the hollow air suction plate 5. One end of the plurality of first rigid pipes 83 is fixedly provided with the same second rigid pipe 84. The end of the soft pipe 82 far away from the air suction fan 81 is fixedly connected to the pipe wall of the second rigid pipe 84. When the air suction fan 81 works, the gas inside the hollow air suction plate 5 is sucked out through the soft pipe 82, the first rigid pipe 83 and the second rigid pipe 84. At the same time, the gas inside the air suction cavity 6 and the air suction holes 7 is pumped out, so that the heat generated inside the cabinet body 1 can be sucked out.

[0022] A plurality of thermistors 9 are fixedly embedded on the inner side surface of the cabinet door 2, and one side of each thermistor 9 close to each air suction hole 7. The plurality of thermistors 9 monitor the temperature of the electrical component 3 in real time.

[0023] A plurality of gas flow regulating mechanisms 10 are all arranged inside the hollow air suction plate 5, and the plurality of gas flow regulating mechanisms 10 correspond to the positions of the plurality of air suction cavities 6 respectively. The gas flow regulating mechanism 10 includes a trapezoidal regulating block 101. A trapezoidal regulating hole 102 communicating with the air suction cavity 6 is formed at the contact part between the hollow air suction plate 5 and the cabinet door 2. The trapezoidal regulating block 101 is located inside the trapezoidal regulating hole 102. Sliders 103 are fixedly arranged at the top and bottom of the side wall of the trapezoidal regulating block 101. A slide bar 104 matched with the two sliders 103 is fixedly arranged inside the hollow air suction plate 5. A spring 105 is sleeved on the rod wall of the slide bar 104, and the two ends of the spring 105 are fixedly connected with the side wall of the slider 103 and the side wall of the hollow air suction plate 5 respectively. A permanent magnet block 106 is fixedly arranged on the side wall of the trapezoidal regulating block 101. An electromagnet block 107 corresponding to the position of the permanent magnet block 106 is fixedly arranged on the inner side wall of the hollow air suction plate 5. When the power of the electromagnet block 107 is increased, a stronger magnetic adsorption force on the permanent magnet block 106 is generated inside the electromagnet block 107, so that the permanent magnet block 106 drives the trapezoidal regulating block 101 to move inside the trapezoidal regulating hole 102, increasing the distance between the trapezoidal regulating block 101 and the trapezoidal regulating hole 102, which can increase the gas passing amount, thereby improving the air suction intensity of the air suction holes 7. During the movement of the trapezoidal regulating block 101, the slider 103 is driven to move on the slide bar 104 and overcome the elastic force of the spring 105. When the power supply of the electromagnet block 107 is disconnected, the spring 105 pushes the slider 103 to move and makes the trapezoidal regulating block 101 move into the trapezoidal regulating hole 102, so that the trapezoidal regulating block 101 can be reset.

[0024] A plurality of sulfur hexafluoride gas spraying mechanisms 11 are all fixedly arranged on the inner side surface of the cabinet door 2, and the sulfur hexafluoride gas spraying mechanisms 11 are arranged facing the surface of the electrical component 3. The plurality of sulfur hexafluoride gas spraying mechanisms 11 and the plurality of groups of air suction holes 7 are arranged in a staggered distribution. The sulfur hexafluoride gas spraying mechanism 11 includes a storage cylinder 111 fixedly arranged on the inner side surface of the cabinet door 2. Spray pipes 112 are fixedly arranged on both sides of the storage cylinder 111. A plurality of uniformly distributed spray holes 113 are formed in the pipe walls of the two spray pipes 112. An electric push rod 114 is fixedly arranged on the inner side wall of the storage cylinder 111. A push piston 115 is fixedly arranged at the moving end of the electric push rod 114, and the push piston 115 is slidably arranged inside the storage cylinder 111. The end of the spray pipe 112 far away from the storage cylinder 111 adopts a closed structure. A first solenoid valve 116 is arranged at the position corresponding to the pipe wall of the spray pipe 112 and close to the storage cylinder 111. When the electric push rod 114 extends, it drives the push piston 115 to move inside the storage cylinder 111, and can spray the sulfur hexafluoride gas stored inside the storage cylinder 111 through the spray pipe 112 and the spray holes 113; An air injection head is arranged on one side of the storage cylinder 111 facing the inside of the cabinet body 1, and the recovered sulfur hexafluoride gas can be introduced into the storage cylinder 111 through the air injection head.

[0025] The sulfur hexafluoride gas filtering mechanism 12 is fixedly arranged on the side wall of the air suction and heat dissipation mechanism 8 and corresponds to the position of the air outlet of the air suction and heat dissipation mechanism 8. The sulfur hexafluoride gas filtering mechanism 12 includes a filter box 121 fixedly arranged on the side wall of the air suction fan 81. Inside the filter box 121, there is a metal-organic framework material layer 122. Inside the filter box 121, there is a breathable material bed 126. On the top of the breathable material bed 126, there is a magnet plate that is snap-connected to the top of the filter box 121 and is magnetically adsorbed to the filter box 121. On one side of the filter box 121, there is a second exhaust pipe 127 fixedly arranged, and on the pipe wall of the second exhaust pipe 127, there is a second solenoid valve 128. On the pipe walls of both first exhaust pipes 123, there are third solenoid valves 129. The metal-organic framework material can adsorb sulfur hexafluoride gas. When it is necessary to disassemble the breathable material bed 126 from the inside of the filter box 121, the staff only needs to pull up the magnet plate on the top of the breathable material bed 126 to separate the magnet plate from the top of the filter box 121. On the top and bottom of the filter box 121, there are first exhaust pipes 123 fixedly arranged. On the top and bottom of the cabinet body 1, there are hollow blowing plates 124 fixedly arranged. The ends of the two first exhaust pipes 123 far from the filter box 121 are respectively fixedly connected to the side walls of the two hollow blowing plates 124. On the side of the two hollow blowing plates 124 facing the hanging feet 4, there are blow holes 125. After the hot air inside the cabinet body 1 is inhaled into the filter box 121, it is blown onto the surface of the hanging feet 4 through the first exhaust pipes 123, the hollow blowing plates 124, and the blow holes 125, which can blow hot air around the hanging feet 4 and keep the hanging feet 4 at a certain temperature. If it is not necessary to blow air on the hanging feet 4, the second solenoid valve 128 can be opened and the third solenoid valve 129 can be closed so that the heat can be discharged outward through the second exhaust pipe 127.

[0026] The PLC controller 13 is fixedly arranged inside the cabinet body 1. Inside the cabinet body 1, there is a mounting plate 14 fixedly arranged. Both the electrical component 3 and the PLC controller 13 are fixedly arranged on the surface of the mounting plate 14. The air suction and heat dissipation mechanism 8, the thermistor 9, the gas flow regulating mechanism 10, and the sulfur hexafluoride gas injection mechanism 11 are all electrically connected to the PLC controller 13.

[0027] Now, the operation principle of the present invention is described as follows: The staff first selects the hanging position of the power distribution cabinet. For example, on the wall in scenarios such as commercial outdoor buildings and industrial outdoor factories. Then, the staff drills hanging nails on the wall according to the distance between the two hanging feet 4 at the top of the cabinet body 1, and then hangs the hanging feet 4 at the top of the cabinet body 1 on the hanging nails. Finally, the staff drills fixing nails inside the two hanging feet 4 at the bottom, thus completing the hanging installation of the cabinet body 1. After that, the staff turns on the power supply of the power distribution cabinet and closes the second solenoid valve 128 and opens the third solenoid valve 129 by operating the PLC controller 13. When the suction fan 81 is working, it can extract the gas inside the hollow suction plate 5, the suction cavity 6 and the suction holes 7 and make it in a negative pressure state, so that the heat generated by the operation of the electrical components 3 inside the cabinet body 1 is sucked into the inside of the suction holes 7, the suction cavity 6 and the hollow suction plate 5, and then blown into the inside of the hollow blowing plate 124 through the first exhaust pipe 123 on the filter box 121, and finally blown to the surface of the suspension foot 4 through the blowing holes 125 arranged on the surface of the hollow blowing plate 124, which can blow hot air around the suspension foot 4. Due to the complex environment of commercial outdoor buildings and industrial outdoor factories, in the cold season, especially in low-temperature regions, the suspension foot 4 and its fixing components are easily affected by frost damage. Blowing hot air around the suspension foot 4 can keep the suspension foot 4 at a certain temperature, avoiding cold brittleness of components such as the suspension foot 4, hanging nails and fixing nails made of metal due to low temperature, reducing their mechanical strength, preventing safety hazards such as fracture and loosening, and ensuring the stability of the power distribution cabinet suspension. In summer, by operating the PLC controller 13 to open the second solenoid valve 128 and close the third solenoid valve 129, the discharged hot air is discharged through the second exhaust pipe 127, avoiding adverse effects caused by the hot air blowing around the suspension foot 4 in hot weather; Since not all the electrical components 3 inside the cabinet body 1 work simultaneously, but according to the functions, operating states and actual requirements of the power distribution cabinet, some components work in cooperation, and some components will start only under specific circumstances. At this time, the heat generated inside the cabinet body 1 is unevenly distributed, that is, the heat is higher around the electrical components 3 in the working state, and the heat is lower around the electrical components 3 in the non - working state. At this time, when the multiple air suction holes 7 on the inner side of the cabinet door 2 suck the gas inside the cabinet body 1 comprehensively, the hot air will pass through the surfaces of the multiple thermistors 9 on the inner side of the cabinet door 2. The multiple thermistors 9 can comprehensively detect the gas temperature inside the cabinet body 1. When gases at different temperatures pass through the surfaces of the thermistors 9, the resistance values of the thermistors 9 increase by different degrees. The higher the gas temperature, the more obvious the increase in the resistance value of the thermistor 9, and the smaller the generated electrical signal (the thermistor 9 uses a PTC resistor. As the gas temperature rises, the carrier concentration inside the thermistor 9 will change, resulting in an increase in its resistance value. By connecting the thermistor 9 to the measurement circuit, the change in the current signal with the increase in resistance value can be detected, and then this electrical signal is amplified and filtered and sent to the PLC controller 13). When the PLC controller 13 monitors this situation, it can correspondingly increase the power of the electromagnetic block 107 corresponding to the position of this thermistor 9, so that a stronger magnetic adsorption force on the permanent magnet block 106 is generated inside the electromagnetic block 107, enabling the permanent magnet block 106 to drive the trapezoidal adjustment block 101 to move inside the trapezoidal adjustment hole 102, increasing the distance between the trapezoidal adjustment block 101 and the trapezoidal adjustment hole 102, which can increase the gas throughput, thereby improving the air suction intensity of the air suction holes 7, and can perform high - intensity air suction and heat dissipation around the electrical components 3 in the working state inside the cabinet body 1 (in hot summer weather, during the air suction and heat dissipation process, even if external gas is quickly sucked into the inside of the cabinet body 1, but because the temperature inside the cabinet body 1 is higher than the external temperature, it will also play a good role in heat dissipation). Since the heat is lower around the electrical components 3 in the non - working state, the resistance value of the corresponding thermistor 9 itself decreases (as the gas temperature decreases, the carrier concentration inside the thermistor 9 will change, resulting in a decrease in its resistance value), causing the PLC controller 13 to reduce the power of the electromagnetic block 107 at the corresponding position, thereby reducing the air suction intensity of the air suction holes 7 at this position, weakening the air suction and heat dissipation intensity of the non - working electrical components 3 inside the cabinet body 1. This not only ensures the heat dissipation efficiency of the electrical components 3 but also reduces energy consumption; When the local circuit temperature of the electrical component 3 rises sharply (due to the aging and damage of the circuit insulation material, the increase in capacitive leakage, the change in the performance of semiconductor components, and the loosening and oxidation of the connection parts resulting in temperature rise), the gas temperature around this position increases. At this time, when the thermistor 9 at the corresponding position comes into contact with the high-temperature gas, its own resistance value will increase sharply. After the thermistor 9 feeds the electrical signal back to the PLC controller 13, the PLC controller 13 will immediately increase the suction intensity of the suction hole 7 at this position. At the same time, the PLC controller 13 will also correspondingly increase the power of the suction fan 81 (the degree of increase in the power of the suction fan 81 is proportional to the increase in the gas temperature detected by the thermistor 9. The higher the increased temperature, the greater the power increase of the suction fan 81), so as to quickly reduce the temperature of the local circuit, avoid the occurrence of electric leakage. At the same time, the built-in alarm of the PLC controller 13 is activated to remind the staff that there is a fault in the circuit inside the cabinet 1 and immediate repair is required; When urgently cooling the internal circuit of the cabinet 1, the PLC controller 13 will also activate the electric push rod 114 at the corresponding position and open the first solenoid valve 116 at the corresponding position. When the electric push rod 114 extends, it drives the push piston 115 to move inside the storage cylinder 111, and can spray the sulfur hexafluoride gas stored inside the storage cylinder 111 through the spray pipe 112 and the spray hole 113, so that the sulfur hexafluoride gas is sprayed on the circuit section with a sharp temperature rise. Since the sulfur hexafluoride gas has excellent arc extinguishing performance, it can cut off potential arcs. At the same time, its high dielectric strength can enhance insulation, and its good heat dissipation ability can reduce the temperature, thus effectively curbing the development of faults, preventing the occurrence of electric leakage and the expansion of faults, and ensuring the stable operation of the equipment and the power system (the extrusion and spraying intensity of the sulfur hexafluoride gas is much greater than the suction intensity of the suction hole 7, so the suction force of the suction hole 7 will not hinder the spraying of the sulfur hexafluoride gas on the surface of the local circuit); After the sulfur hexafluoride gas is ejected and comes into contact with the local circuit, it will disperse in the surrounding air. After the ejection action ends, the air suction hole 7 will suck the sulfur hexafluoride gas dispersed in the air into the interior of the air suction fan 81 and then discharge it into the interior of the filter box 121. Since there is a metal-organic framework material layer 122 inside the filter box 121, and the metal-organic framework material has a highly porous structure with a large specific surface area, which means there are a large number of pores and cavities inside it, providing abundant adsorption sites for sulfur hexafluoride molecules. The sulfur hexafluoride molecules can enter these pores and cavities and be adsorbed therein, thus realizing the separation from the air. The separated gas will be blown onto the surface of the hanging foot 4. After the metal-organic framework material layer 122 adsorbs the sulfur hexafluoride molecules, the breathable material bed 126 can be taken out from the interior of the filter box 121, and then by means of temperature-controlled desorption, the metal-organic framework material layer 122 is placed in a heating device, and the temperature is raised to make the thermal motion of the adsorbed sulfur hexafluoride molecules intensify, so that the sulfur hexafluoride molecules can be detached from the adsorption sites of the metal-organic framework material. Generally speaking, slowly raising the temperature to 50°C - 150°C can gradually desorb the sulfur hexafluoride molecules. After the sulfur hexafluoride molecules are desorbed, they are added again into the interior of the storage cylinder 111 for recycling.

[0028] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A suspended anti-leakage intelligent distribution box, comprising a cabinet (1), a cabinet door (2), and an electrical component (3) arranged inside the cabinet (1), wherein both sides of the top and bottom of the cabinet (1) are fixedly provided with suspension feet (4), characterized in that: Also includes: A hollow air suction plate (5) is fixedly arranged on the outer surface of the cabinet door (2); a plurality of evenly distributed air suction cavities (6) are provided inside the cabinet door (2); and a plurality of air suction holes (7) are provided on the inner side surface of the cabinet door (2) at positions corresponding to the positions of the plurality of air suction cavities (6); An air suction and heat dissipation mechanism (8) is arranged between the side wall of the cabinet (1) and the side surface of the hollow air suction plate (5); A plurality of thermistors (9) are fixedly embedded on the inner side surface of the cabinet door (2), and each thermistor (9) is close to one side of each air suction hole (7), and the plurality of thermistors (9) monitor the temperature of the electrical component (3) in real time; A plurality of gas flow regulating mechanisms (10) are all arranged inside the hollow air suction plate (5), and the plurality of gas flow regulating mechanisms (10) correspond to the positions of the plurality of air suction chambers (6) respectively; A plurality of sulfur hexafluoride gas injection mechanisms (11) are all fixedly arranged on the inner side surface of the cabinet door (2), and the sulfur hexafluoride gas injection mechanisms (11) are arranged toward the surface of the electrical component (3); The sulfur hexafluoride gas filtering mechanism (12) is fixedly arranged on the side wall of the air suction and heat dissipation mechanism (8), and the air suction and heat dissipation mechanism (8) corresponds to the position of the air outlet of the air suction and heat dissipation mechanism (8); A PLC controller (13) is fixedly arranged inside the cabinet (1), and the air suction and heat dissipation mechanism (8), the thermistor (9), the gas flow adjustment mechanism (10) and the sulfur hexafluoride gas injection mechanism (11) are all electrically connected to the PLC controller (13).

2. A suspended anti-leakage intelligent distribution box according to claim 1, characterized in that: The air suction and heat dissipation mechanism (8) comprises an air suction fan (81) fixedly arranged on the inner wall of the cabinet (1), a soft tube (82) being fixedly arranged at the input end of the air suction fan (81), a plurality of evenly distributed first hard tubes (83) being symmetrically fixedly arranged on the side surface of the hollow air suction plate (5), a same second hard tube (84) being fixedly arranged at one end of the plurality of first hard tubes (83), and an end of the soft tube (82) away from the air suction fan (81) being fixedly connected to the tube wall of the second hard tube (84).

3. A suspended anti-leakage intelligent distribution box according to claim 2, characterized in that: The gas flow regulating mechanism (10) comprises a trapezoidal regulating block (101); a trapezoidal regulating hole (102) which is connected to the air suction chamber (6) is provided at a contact portion between the hollow air suction plate (5) and the cabinet door (2); the trapezoidal regulating block (101) is located inside the trapezoidal regulating hole (102); a sliding block (103) is fixedly provided on the top and bottom of the side wall of the trapezoidal regulating block (101); and a sliding block (103) which is connected to the air suction chamber (6) is fixedly provided inside the hollow air suction plate (5). The two sliders (103) are matched with a slide rod (104), the slide rod (104) is sleeved with a spring (105), and the two ends of the spring (105) are respectively fixedly connected to the side wall of the slider (103) and the side wall of the hollow air suction plate (5), the side wall of the trapezoidal adjustment block (101) is fixedly provided with a permanent magnet block (106), and the inner side wall of the hollow air suction plate (5) is fixedly provided with an electromagnetic block (107) corresponding to the position of the permanent magnet block (106).

4. A suspended anti-leakage intelligent distribution box according to claim 3, characterized in that: The sulfur hexafluoride gas injection mechanism (11) comprises a storage cylinder (111) fixedly arranged on the inner side surface of the cabinet door (2), injection pipes (112) are fixedly arranged on both sides of the storage cylinder (111), and the tube walls of the two injection pipes (112) are provided with a plurality of uniformly distributed injection holes (113), an electric push rod (114) is fixedly arranged on the inner side wall of the storage cylinder (111), a push piston (115) is fixedly arranged at the movable end of the electric push rod (114), and the push piston (115) is slidably arranged inside the storage cylinder (111).

5. A suspended anti-leakage intelligent distribution box according to claim 4, characterized in that: One end of the injection pipe (112) away from the storage cylinder (111) adopts a closed structure, a first solenoid valve (116) is provided on the wall of the injection pipe (112) at a position corresponding to a position close to the storage cylinder (111), and a gas injection head is provided on a side of the storage cylinder (111) facing the interior of the cabinet (1).

6. A suspended anti-leakage intelligent distribution box according to claim 5, characterized in that: The sulfur hexafluoride gas filtering mechanism (12) comprises a filter box (121) fixedly arranged on the side wall of the suction fan (81), a metal organic framework material layer (122) being arranged inside the filter box (121), first exhaust pipes (123) being fixedly arranged on the top and bottom of the filter box (121), hollow blowing plates (124) being fixedly arranged on the top and bottom of the cabinet (1), two ends of the first exhaust pipes (123) away from the filter box (121) being fixedly connected to the side walls of two hollow blowing plates (124), and two blowing holes (125) being provided on one side of the two hollow blowing plates (124) facing the suspension foot (4).

7. A suspended anti-leakage intelligent distribution box according to claim 6, characterized in that: A breathable material bed (126) is arranged inside the filter box (121), a magnet plate is arranged on the top of the breathable material bed (126) and is clamped with the top of the filter box (121), and the magnet plate and the filter box (121) are arranged by magnetic adsorption, a second exhaust pipe (127) is fixedly arranged on one side of the filter box (121), and a second solenoid valve (128) is arranged on the pipe wall of the second exhaust pipe (127), and a third solenoid valve (129) is arranged on the pipe walls of the two first exhaust pipes (123).

8. The suspended anti-leakage intelligent distribution box according to claim 1 is characterized in that: A mounting plate (14) is fixedly provided inside the cabinet (1), and the electrical components (3) and the PLC controller (13) are both fixedly arranged on the surface of the mounting plate (14).

9. A method for using a suspended anti-leakage intelligent distribution box as claimed in claim 6, characterized in that: The method of use includes the following steps: S1. First, select the hanging position of the power distribution cabinet and nail it to complete the hanging installation of the cabinet body (1), and then connect the power supply of the power distribution cabinet; S2. When the electrical component (3) is operating normally, the hot air generated by the electrical component (3) inside the cabinet (1) is discharged by means of the provided suction fan (81) and the suction hole (7). The discharged hot air is blown toward the hollow blowing plate (124) and the blowing hole (125) through the first exhaust pipe (123) and toward the surface of the hanging foot (4). At the same time, the plurality of thermistors (9) on the cabinet door (2) can fully detect the temperature of the gas inside the cabinet (1). When gases of different temperatures pass through the surface of the thermistor (9), the resistance value of the thermistor (9) increases to a certain extent. The temperature difference between the positions of the electrical components (3) in the cabinet (1) and the positions of the electrical components (3) not working can be determined. At this time, the thermistor (9) feeds back an electrical signal to the PLC controller (13). The PLC controller (13) controls the operation of the electromagnetic block (107), so that the spacing between the trapezoidal adjustment block (101) and the trapezoidal adjustment hole (102) is adjusted, and the suction strength of the suction holes (7) at the corresponding positions can be adaptively adjusted. At the same time, the suction strength of the suction holes (7) in the area of ​​the non-working electrical components (3) is reduced. S3. When the temperature of a local circuit of the electrical component (3) rises sharply, the thermistor (9) at the corresponding position detects the location where the temperature rises sharply, and the PLC controller (13) immediately increases the suction intensity of the suction hole (7) at this location. At the same time, the PLC controller (13) increases the power of the suction fan (81) accordingly. In addition, the built-in alarm of the PLC controller (13) is activated; S4. When the internal circuit of the cabinet (1) is subjected to emergency cooling, the PLC controller (13) activates the electric push rod (114) at the corresponding position and opens the first solenoid valve (116) at the corresponding position. When the electric push rod (114) is extended, it drives the piston (115) to move inside the storage cylinder (111), so that the sulfur hexafluoride gas stored inside the storage cylinder (111) can be ejected through the ejection pipe (112) and the ejection hole (113); S5. After the sulfur hexafluoride gas is ejected and contacts the local circuit, it will be dispersed in the surrounding air. After the ejection action is completed, the air suction and heat dissipation mechanism (8) and the sulfur hexafluoride gas filtering mechanism (12) will recycle the sulfur hexafluoride gas.

Images