A distribution box for power grid regulation

Abstract

The present invention belongs to the technical field of power grid distribution equipment, and particularly relates to a distribution box for power grid regulation and control, including a distribution box main body and a box door. A rectangular through hole is formed in the inner side wall of the box door, and a connection box is fixedly connected to the hole wall of the rectangular through hole. A PLC controller is fixedly connected to the outer wall of the connection box, and a first partition board, a second partition board and a third partition board are fixedly connected to the inner wall of the connection box. The distribution box for power grid regulation and control of the present invention is designed for the use environment of rural power grids. It not only has the functions of moisture-proof and efficient cooling, but also has the function of preventing small animals from entering, avoiding the damage of electrical components in the distribution box by small animals. At the same time, it can improve the service life and reliability of electrical components in the distribution box, as well as improve the stability of power grid power supply and the safety of substation equipment. Moreover, the insect-proof liquid medicine in the liquid storage area can be automatically replenished, reducing the cycle of replenishing and maintaining the insect-proof liquid medicine in the distribution box and improving the convenience of using the distribution box.

Description

Technical Field

[0001] The present invention belongs to the technical field of power grid distribution equipment, and particularly relates to a distribution box for power grid regulation and control. Background Art

[0002] The distribution box for power grid regulation and control is a key device in the power grid system for power distribution and control. It is mainly used to receive and distribute electric energy, convert high-voltage electricity from the power grid into appropriate low-voltage electricity for various electrical equipment. The distribution box is usually equipped with various electrical components such as circuit breakers, fuses, contactors, etc. These components can protect the circuit, control the on-off, and adjust parameters. Through reasonable regulation and control of the distribution box, precise power distribution and fault isolation can be achieved, ensuring the stability and reliability of the power grid operation. For example, the patent authorization announcement number is CN221102866U, which discloses a comprehensive distribution box for rural power grids.

[0003] At present, most of the distribution boxes for rural power grid regulation and control are installed in small substations, and the following problems often occur during the use of the distribution box:

[0004] In rural areas, especially in rainy seasons or areas near rivers, ponds, etc., the air humidity is often relatively high. However, the moisture-proof measures of many small substations are not perfect, which makes the distribution box for power grid regulation and control extremely vulnerable to the influence of humid air. Moisture in the air can enter its interior through channels such as wire passing holes and heat dissipation holes of the distribution box, thereby causing the metal conductive parts of electrical components to be affected by moisture. This moisture-affected situation will, on the one hand, reduce the insulation resistance of electrical components, thus easily leading to leakage faults. On the other hand, the humid environment will cause the metal conductive parts to rust, seriously affecting their mechanical properties and electrical connection performance. These problems not only interfere with the stability of rural power grid power supply, bringing many inconveniences to residents' daily lives and agricultural production, but also greatly affect the service life and reliability of electrical components in the distribution box;

[0005] There are often small animals such as insects, rats, snakes, and ants around small substations of rural power grids. They may drill into the distribution box through wire passing holes and heat dissipation holes of the distribution box. For example, rats chew on wires and insulating materials, destroying the integrity of the equipment and causing the circuit to break. When a snake swims and touches electrical components, it may cause a short circuit and damage the electrical components. Especially in a humid environment, the distribution box is more likely to attract small animals, further increasing the probability of these safety hazards occurring, seriously affecting the stability of rural power supply and the safety of substation equipment.

[0006] Therefore, we propose a distribution box for power grid regulation and control to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a distribution box for power grid regulation and control for the above problems.

[0008] To achieve the above object, the present invention adopts the following technical solutions: A distribution box for power grid regulation and control includes a distribution box main body and a box door. A rectangular through hole is provided on the inner side wall of the box door, and a connection box is fixedly connected to the hole wall of the rectangular through hole. A PLC controller is fixedly connected to the outer wall of the connection box. The inner wall of the connection box is fixedly connected with a first partition, a second partition, and a third partition. The first partition, the second partition, and the third partition divide the internal cavity of the connection box into an air inlet area, a dehumidification area, a shunt area, and a liquid storage area;

[0009] A rectangular air inlet is provided on the outer wall of the connection box in the air inlet area, and a dust-proof net plate is fixedly connected to the inner wall of the rectangular air inlet. An air supply mechanism is fixedly connected to the inner wall of the connection box in the air inlet area;

[0010] An installation hole is provided on the outer wall of the second partition, and a dehumidification mechanism is fixedly connected to the hole wall of the installation hole;

[0011] A fixed through hole is provided on the outer wall of the third partition, and an anti-animal intrusion mechanism is fixedly connected to the hole wall of the fixed through hole;

[0012] An insect repellent liquid replenishing mechanism is fixedly connected to the bottom outer wall of the distribution box main body.

[0013] In the above-mentioned distribution box for power grid regulation and control, the air supply mechanism includes a micro air pump fixedly connected to the inner wall of the connection box. The air outlet end of the micro air pump is fixedly communicated with a first conduit. The air outlet end of the first conduit penetrates through the first partition and is fixedly communicated with a hollow block. The upper surface of the hollow block is fixedly connected to the inner wall of the connection box. The lower surface of the hollow block is fixedly communicated with a plurality of first air nozzles.

[0014] In the above-mentioned distribution box for power grid regulation and control, the dehumidification mechanism includes a semiconductor refrigeration sheet fixedly embedded in the second partition. A plurality of metal mesh sheets are fixedly connected to the outer wall of the refrigeration side of the semiconductor refrigeration sheet, and the metal mesh sheets are located directly below the hollow block. A delivery pipe is fixedly embedded at the top of the connection box in the dehumidification area. The air inlet end of the delivery pipe extends downward to the bottom of the connection box. The air outlet end of the delivery pipe is fixedly communicated with a hollow strip. The outer wall of the hollow strip is fixedly connected to the inner wall of the distribution box main body. A plurality of second air nozzles are fixedly communicated with the upper surface and the lower surface of the hollow strip. A liquid level switch is fixedly connected to the bottom inner wall of the connection box in the dehumidification area. A first normally closed solenoid valve is fixedly embedded in the lower surface of the connection box in the dehumidification area. The liquid outlet end of the first normally closed solenoid valve is fixedly communicated with a second conduit. The water outlet end of the second conduit penetrates through the outer wall of the box door. A first humidity sensor is fixedly connected to the top inner wall of the distribution box main body.

[0015] In the above-mentioned distribution box for power grid regulation and control, the anti-animal intrusion mechanism includes a three-way reversing solenoid valve fixedly embedded in the third partition. A through hole is formed in the side wall of the second partition, and a U-shaped thin tube is fixedly connected to the hole wall of the through hole. The intake end of the three-way reversing solenoid valve is located inside the shunt area. One of the outlet ends of the three-way reversing solenoid valve penetrates through the top of the connection box, and the other outlet end of the three-way reversing solenoid valve penetrates through the third partition and is fixedly communicated with a heat conduction coil. The outlet end of the heat conduction coil sequentially passes through the outer walls of the connection box and the box door. A sunken hole is formed in the inner wall of the connection box located in the liquid storage area, and a connection cover is fixedly connected to the hole wall of the sunken hole. Miniature electric push rods are fixedly embedded in the inner walls at both ends of the connection cover. L-shaped rods are fixedly connected to the opposite sides of the two miniature electric push rods. A connection through hole matching the L-shaped rods is formed in the outer wall of the connection cover. An elastic liquid guide cotton core is fixedly connected to the rod walls of the two L-shaped rods together. The bottom end of the elastic liquid guide cotton core passes through the bottom end of the heat conduction coil and extends to the bottom of the liquid storage area. Heat pyroelectric infrared sensors are fixedly connected to the inner walls of the top and bottom ends of the distribution box main body, and an electric bell is fixedly connected to the inner wall of the bottom end of the distribution box main body.

[0016] In the above-mentioned distribution box for power grid regulation and control, a rubber cover is fixedly connected to the rod walls of the two L-shaped rods together, and the top end of the rubber cover is fixedly connected to the lower surface of the connection cover.

[0017] In the above-mentioned distribution box for power grid regulation and control, the insect repellent liquid replenishing mechanism includes a liquid medicine box fixedly connected to the lower surface of the distribution box main body. An insect repellent liquid layer is filled inside the liquid medicine box. A miniature water pump is fixedly connected to the inner wall of the liquid medicine box. The liquid outlet end of the miniature water pump is fixedly communicated with a third conduit. The outlet end of the third conduit passes through the outer wall of the liquid medicine box. The liquid outlet end of the third conduit is fixedly communicated with a second normally closed solenoid valve. The liquid outlet end of the second normally closed solenoid valve is fixedly communicated with the lower surface of the connection box located in the liquid storage area. An L-shaped frame is fixedly connected to the upper surface of the connection box. A plug-in type humidity sensor is fixedly connected to the upper surface of the L-shaped frame. The detection rod end of the plug-in type humidity sensor is inserted into the top end of the elastic liquid guide cotton core.

[0018] In the above-mentioned distribution box for power grid regulation and control, the insect repellent liquid layer is any one of peppermint oil and lavender essential oil.

[0019] In the above-mentioned distribution box for power grid regulation and control, a heat sink is fixedly connected to the outer wall of the heat dissipation side of the semiconductor refrigeration sheet, and the outlet end of the U-shaped thin tube is located below the heat sink.

[0020] Compared with the existing technology, the advantages of a distribution box for power grid regulation and control are as follows:

[0021] 1. Through the provided air supply mechanism and dehumidification mechanism, when the air humidity inside the main body of the distribution box is relatively high, the first humidity sensor and the PLC controller control the semiconductor refrigeration sheet to be powered on. Then, the refrigeration side of the semiconductor refrigeration sheet can lower the temperature of the metal mesh and the dehumidification area. After that, when the air ejected from the first nozzle passes through the metal mesh and the dehumidification area, it is affected by the low temperature and liquefies into water droplets for dehumidification. Then, most of the dry and low-temperature air in the dehumidification area is transported into the main body of the distribution box through the delivery pipe, hollow strips, and the second nozzle, preventing the electrical components inside the main body of the distribution box from being interfered by the humid air. This can not only prevent the insulation resistance of the electrical components from decreasing, but also prevent the metal conductive parts in the electrical components from rusting, ensuring the mechanical properties and electrical connection performance of the electrical components, and can also prevent the distribution box main body from having a leakage fault. This mechanism enables the distribution box for rural power grid regulation to have the functions of moisture-proof and efficient cooling, which can not only improve the service life and reliability of the electrical components inside the distribution box, but also improve the stability of the rural power grid power supply.

[0022] 2. Through the provided anti-animal intrusion mechanism, when the distribution box is in use, the insect-proof liquid medicine in the liquid storage area will evaporate through the elastic liquid guide cotton core. The stimulation generated by the insect-proof liquid medicine can interfere with the sense of smell of small animals, preventing small animals from approaching the main body of the distribution box. Additionally, while the main body of the distribution box is being dehumidified, the PLC controller also controls the three-way reversing solenoid valve and the micro electric push rod to work. The three-way reversing solenoid valve inputs hot air into the heat conduction coil, and the heat conduction coil conducts the heat of the hot air to the insect-proof liquid medicine in the liquid storage area, accelerating the evaporation rate of the insect-proof liquid medicine by raising the temperature. At the same time, the mobile end of the micro electric push rod contracts to expand the evaporation area of the insect-proof liquid medicine at the top of the elastic liquid guide cotton core, further increasing the evaporation rate of the insect-proof liquid medicine in the liquid storage area. By increasing the content of the insect-proof liquid medicine inside the main body of the distribution box, it can more strongly stimulate the sense of smell of small animals to cope with the situation where a large number of small animals may appear in a humid environment. In addition, if some relatively large small animals enter the main body of the distribution box despite the stimulation of the insect-proof liquid medicine, the PLC controller will control the electric bell to start. The electric bell produces a rapid and high-pitched driving ringtone, which can drive away the relatively large small animals inside the main body of the distribution box, preventing the electrical components inside the main body of the distribution box from being interfered by small animals. This mechanism enables the distribution box for rural power grid regulation to have the function of preventing small animals from intruding, avoiding the damage of electrical components inside the distribution box by small animals, improving the reliability of the distribution box in use, as well as improving the stability of the rural power grid power supply and the safety of substation equipment.

[0023] 3. Through the provided insect-proof liquid replenishment mechanism, as the usage time of the distribution box main body extends and the insect-proof liquid in the liquid storage area dries up, the elastic liquid guide cotton core becomes dry at this time. The plug-in humidity sensor and the PLC controller control the micro water pump and the second normally closed solenoid valve to start for seconds. During these seconds, the insect-proof liquid in the liquid medicine tank is transported to the liquid storage area of the connection box through the micro water pump, the third conduit, and the second normally closed solenoid valve for storage and standby. At the same time, the elastic liquid guide cotton core becomes moist again. This mechanism enables the insect-proof liquid to have an automatic replenishment function, reduces the cycle of replenishing and maintaining the insect-proof liquid in the distribution box, and improves the convenience of using the distribution box. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of a distribution box for power grid regulation provided by the present invention;

[0025] Figure 2 is a schematic cross-sectional structural diagram of the connection box in a distribution box for power grid regulation provided by the present invention;

[0026] Figure 3 is Figure 2 a schematic structural diagram of part A in

[0027] Figure 4 is a schematic structural diagram of the hollow block part in a distribution box for power grid regulation provided by the present invention;

[0028] Figure 5 is a schematic structural diagram of the hollow strip part in a distribution box for power grid regulation provided by the present invention;

[0029] Figure 6 is a schematic three-dimensional structural diagram of the connection box part in a distribution box for power grid regulation provided by the present invention.

[0030] In the figure: 1 distribution box main body, 2 box door, 3 connection box, 4 PLC controller, 5 air supply mechanism, 51 micro air pump, 52 first conduit, 53 hollow block, 54 first jet nozzle, 6 dehumidification mechanism, 61 semiconductor refrigeration sheet, 62 metal mesh sheet, 63 delivery pipe, 64 hollow strip, 65 second jet nozzle, 66 liquid level switch, 67 first normally closed solenoid valve, 68 second conduit, 7 anti-animal intrusion mechanism, 69 first humidity sensor, 71 three-way reversing solenoid valve, 72 U-shaped thin pipe, 73 heat conduction coil pipe, 74 connection cover, 75 micro electric push rod, 76 L-shaped rod, 77 elastic liquid guiding cotton core, 78 pyroelectric infrared sensor, 79 electric bell, 8 insect repellent liquid replenishing mechanism, 81 liquid medicine tank, 82 insect repellent liquid layer, 83 micro water pump, 84 third conduit, 85 second normally closed solenoid valve, 86 L-shaped frame, 87 plug-in type humidity sensor, 9 heat sink, 10 first partition board, 11 second partition board, 12 third partition board, 13 air inlet area, 14 dehumidification area, 15 shunt area, 16 liquid storage area, 17 dust-proof net plate, 18 rubber cover. Embodiment

[0031] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] As Figures 1-6 shown, a distribution box for power grid regulation includes a distribution box main body 1 and a box door 2. A rectangular through hole is formed in the inner side wall of the box door 2, and a connection box 3 is fixedly connected to the hole wall of the rectangular through hole. A PLC controller 4 is fixedly connected to the outer wall of the connection box 3. A first partition board 10, a second partition board 11, and a third partition board 12 are fixedly connected to the inner wall of the connection box 3. The first partition board 10, the second partition board 11, and the third partition board 12 divide the inner cavity of the connection box 3 into an air inlet area 13, a dehumidification area 14, a shunt area 15, and a liquid storage area 16. A rectangular air inlet is formed in the outer wall of the connection box 3 located in the air inlet area 13, and a dust-proof net plate 17 is fixedly connected to the inner wall of the rectangular air inlet. An air supply mechanism 5 is fixedly connected to the inner wall of the connection box 3 located in the air inlet area 13. The air supply mechanism 5 includes a micro air pump 51 fixedly connected to the inner wall of the connection box 3. The air outlet end of the micro air pump 51 is fixedly communicated with a first conduit 52. The air outlet end of the first conduit 52 penetrates through the first partition board 10 and is fixedly communicated with a hollow block 53. The upper surface of the hollow block 53 is fixedly connected to the inner wall of the connection box 3. A plurality of first jet nozzles 54 are fixedly communicated with the lower surface of the hollow block 53.

[0033] The outer wall of the second partition plate 11 is provided with mounting holes, and a dehumidifying mechanism 6 is fixedly connected to the hole wall of the mounting holes. The dehumidifying mechanism 6 includes a semiconductor refrigerating sheet 61 fixedly embedded in the second partition plate 11. A plurality of metal mesh sheets 62 are fixedly connected to the outer wall of the refrigerating side of the semiconductor refrigerating sheet 61, and the metal mesh sheets 62 are located directly below the hollow block 53. A delivery pipe 63 is fixedly embedded at the top of the connection box 3 in the dehumidifying area 14. The intake end of the delivery pipe 63 extends downward to the bottom of the connection box 3. The outlet end of the delivery pipe 63 is fixedly communicated with a hollow strip 64. The outer wall of the hollow strip 64 is fixedly connected to the inner wall of the main distribution box body 1. A plurality of second jet nozzles 65 are fixedly communicated with both the upper surface and the lower surface of the hollow strip 64. A liquid level switch 66 is fixedly connected to the inner wall of the bottom end of the connection box 3 in the dehumidifying area 14. A first normally closed solenoid valve 67 is fixedly embedded in the lower surface of the connection box 3 in the dehumidifying area 14. The liquid outlet end of the first normally closed solenoid valve 67 is fixedly communicated with a second conduit 68. The water outlet end of the second conduit 68 passes through the outer wall of the box door 2. A first humidity sensor 69 is fixedly connected to the inner wall of the top end of the main distribution box body 1. This mechanism enables the distribution box for rural power grid regulation to have the functions of moisture-proof and efficient cooling, which can not only improve the service life and reliability of electrical components in the distribution box, but also improve the stability of rural power grid power supply.

[0034] A fixed through hole is formed in the outer wall of the third partition plate 12, and an anti-animal intrusion mechanism 7 is fixedly connected to the hole wall of the fixed through hole. The anti-animal intrusion mechanism 7 includes a three-way reversing solenoid valve 71 fixedly embedded in the third partition plate 12. A through hole is formed in the side wall of the second partition plate 11, and a U-shaped thin tube 72 is fixedly connected to the hole wall of the through hole. A heat sink 9 is fixedly connected to the outer wall of the heat dissipation side of the semiconductor refrigeration sheet 61. The air outlet end of the U-shaped thin tube 72 is located below the heat sink 9. A part of the dry and low-temperature air in the dehumidification area 14 is transported to the heat dissipation side of the semiconductor refrigeration sheet 61 through the U-shaped thin tube 72, and cooperates with the heat sink 9 to accelerate the heat dissipation of the semiconductor refrigeration sheet 61, ensuring the refrigeration and dehumidification effect of the semiconductor refrigeration sheet 61. The air inlet end of the three-way reversing solenoid valve 71 is located inside the diversion area 15. One air outlet end of the three-way reversing solenoid valve 71 penetrates through the top of the connection box 3. The other air outlet end of the three-way reversing solenoid valve 71 penetrates through the third partition plate 12 and is fixedly communicated with a heat conduction coil 73. The air outlet end of the heat conduction coil 73 sequentially passes through the outer walls of the connection box 3 and the box door 2. A sunken hole is formed in the inner wall of the connection box 3 located in the liquid storage area 16, and a connection cover 74 is fixedly connected to the hole wall of the sunken hole. Miniature electric push rods 75 are fixedly embedded in the inner walls of both ends of the connection cover 74. L-shaped rods 76 are fixedly connected to the opposite sides of the two miniature electric push rods 75. A rubber cover 18 is fixedly connected to the rod walls of the two L-shaped rods 76 together. The top end of the rubber cover 18 is fixedly connected to the lower surface of the connection cover 74. The rubber cover 18 can prevent the insect-proof liquid medicine from volatilizing from the connection cover 74. A connection through hole matching the L-shaped rod 76 is formed in the outer wall of the connection cover 74. An elastic liquid guiding cotton core 77 is fixedly connected to the rod walls of the two L-shaped rods 76 together. The bottom end of the elastic liquid guiding cotton core 77 passes through the bottom end of the heat conduction coil 73 and extends to the bottom of the liquid storage area 16. Pyroelectric infrared sensors 78 are fixedly connected to the inner walls of the top end and the bottom end of the main body of the distribution box 1. An electric bell 79 is fixedly connected to the inner wall of the bottom end of the main body of the distribution box 1. This mechanism enables the distribution box for rural power grid regulation to have the function of preventing small animals from intruding, avoiding damage to electrical components in the distribution box by small animals, improving the reliability of the distribution box, and enhancing the power supply stability of the rural power grid and the safety of substation equipment;

[0035] The bottom outer wall of the main body 1 of the distribution box is fixedly connected with an insect repellent liquid replenishing mechanism 8. The insect repellent liquid replenishing mechanism 8 includes a liquid medicine tank 81 fixedly connected to the lower surface of the main body 1 of the distribution box. The inside of the liquid medicine tank 81 is filled with an insect repellent liquid layer 82. The insect repellent liquid layer 82 is any one of peppermint oil and lavender essential oil. The insect repellent liquid layer 82 can volatilize irritating substances, stimulate the sense of smell of small animals, and prevent small animals from invading the distribution box. The inner wall of the liquid medicine tank 81 is fixedly connected with a micro water pump 83. The liquid outlet end of the micro water pump 83 is fixedly communicated with a third conduit 84. The outlet end of the third conduit 84 passes through the outer wall of the liquid medicine tank 81. The liquid outlet end of the third conduit 84 is fixedly communicated with a second normally closed solenoid valve 85. The liquid outlet end of the second normally closed solenoid valve 85 is fixedly communicated with the lower surface of the connection box 3 located in the liquid storage area 16. The upper surface of the connection box 3 is fixedly connected with an L-shaped frame 86. The upper surface of the L-shaped frame 86 is fixedly connected with an inserted rod type humidity sensor 87. The detection rod end of the inserted rod type humidity sensor 87 is inserted into the top end of the elastic liquid guiding cotton core 77. This mechanism enables the insect repellent liquid to have an automatic replenishing function, reduces the cycle of replenishing and maintaining the insect repellent liquid in the distribution box, and improves the convenience of using the distribution box.

[0036] The micro air pump 51, the semiconductor refrigeration sheet 61, the first normally closed solenoid valve 67, the three-way reversing solenoid valve 71, the micro electric push rod 75, the electric bell 79, the micro water pump 83 and the second normally closed solenoid valve 85 are all electrically connected to the output end of the PLC controller 4 through wires. The liquid level switch 66, the first humidity sensor 69, the pyroelectric infrared sensor 78 and the inserted rod type humidity sensor 87 are all electrically connected to the input end of the PLC controller 4 through wires. The pyroelectric infrared sensor 78 utilizes the pyroelectric effect. When the infrared radiation causes the crystal temperature to change, the polarization state of the pyroelectric infrared sensor 78 changes to generate charges, thereby sending an electrical signal. The above-mentioned energized devices and electrical connections are all prior arts and are well-known to those skilled in the art, so they will not be described in detail here.

[0037] Now, the operating principle of the present invention is described as follows: When the distribution box for rural power grid regulation is used in a small substation, first, the PLC controller 4 controls the micro air pump 51 to start. The micro air pump 51 sucks air through the rectangular air inlet of the air intake area 13. The air then enters the dehumidification area 14 through the first conduit 52, the hollow block 53 and the first air jet nozzle 54. Then, most of the air is transported to the hollow strip 64 through the delivery pipe 63. Finally, the air is ejected through the second air jet nozzle 65 and distributed inside the main body 1 of the distribution box, actively dissipating heat from the electrical components inside the main body 1 of the distribution box to ensure the reliable operation of the electrical components inside the main body 1 of the distribution box. A part of the dry and low-temperature air in the dehumidification area 14 is transported to the heat dissipation side of the semiconductor refrigeration sheet 61 through the U-shaped thin pipe 72;

[0038] Meanwhile, the insect-proof liquid medicine in the liquid storage area 16 moistens the elastic liquid guiding cotton core 77, and is automatically dispersed into the interior of the power distribution box main body 1 through the elastic liquid guiding cotton core 77. The insect-proof liquid medicine can be selected from mint oil or lavender oil. Mint oil and lavender oil can volatilize independently at normal temperature. Then, the dispersed insect-proof liquid medicine diffuses into the entire interior of the power distribution box main body 1 along with the airflow ejected from the second air nozzle 65. Specifically, mint oil contains menthol, and menthol can emit a cool smell. These smells will interfere with the sense of smell of small animals such as insects, rats, snakes, and ants, making the small animals reluctant to approach, thus achieving the purpose of driving small animals such as insects, rats, snakes, and ants from entering the power distribution box main body 1. Lavender oil contains components such as linalool and linalyl acetate. The smells of these components have a stimulating effect on the olfactory systems of insects, rats, snakes, and ants, and can prevent insects, rats, snakes, and ants from approaching, thus achieving the purpose of driving small animals such as insects, rats, snakes, and ants from entering the power distribution box main body 1. Moreover, at this time, the top of the elastic liquid guiding cotton core 77 is squeezed by the micro electric push rod 75 and shrinks. After the top of the elastic liquid guiding cotton core 77 shrinks, the volatilization area of the insect-proof liquid medicine is reduced, and it is avoided that the insect-proof liquid medicine volatilizes excessively in a dry environment when it is not easy to enter small animals, thereby avoiding waste of the insect-proof liquid medicine in the liquid storage area 16;

[0039] When the air humidity inside the main body 1 of the distribution box is relatively high, the first humidity sensor 69 will detect the humidity inside the main body 1 of the distribution box in real time and send the humidity value to the PLC controller 4 in the form of an electrical signal. When the humidity value detected by the first humidity sensor 69 exceeds the maximum humidity threshold of the main body 1 of the distribution box preset by the PLC controller 4, the PLC controller 4 controls the semiconductor refrigeration sheet 61 to be energized. Then, the refrigeration side of the semiconductor refrigeration sheet 61 can lower the temperatures of the metal mesh 62 and the dehumidification area 14. After that, when the air ejected from the first air nozzle 54 passes through the metal mesh 62 and the dehumidification area 14, it is liquefied into water droplets under the influence of the low temperature. The water droplets finally accumulate at the bottom of the dehumidification area 14. As the water level of the accumulated water rises to the liquid level switch 66, the liquid level switch 66 is triggered by the water level of the accumulated water and is energized, and sends an electrical signal to the PLC controller 4. The PLC controller 4 controls the first normally closed solenoid valve 67 to be energized and opened for 3 seconds according to this electrical signal. During these 3 seconds, the accumulated water at the bottom of the dehumidification area 14 is discharged through the opened first normally closed solenoid valve 67 and the second conduit 68. After 3 seconds, the PLC controller 4 controls the first normally closed solenoid valve 67 to close. Then, most of the dry and low-temperature air in the dehumidification area 14 is transported into the main body 1 of the distribution box through the delivery pipe 63, the hollow strip 64 and the second air nozzle 65, avoiding the interference of the electrical components in the main body 1 of the distribution box by the humid air. This can not only prevent the insulation resistance of the electrical components from decreasing, but also prevent the metal conductive parts in the electrical components from rusting, ensuring the mechanical performance and electrical connection performance of the electrical components, and can also prevent the distribution box main body 1 from having a leakage fault. A part of the dry and low-temperature air in the dehumidification area 14 is also transported to the heat dissipation side of the semiconductor refrigeration sheet 61 through the U-shaped thin pipe 72, cooperating with the heat sink 9 to accelerate the heat dissipation of the semiconductor refrigeration sheet 61 and ensuring the refrigeration and dehumidification effect of the semiconductor refrigeration sheet 61. At this time, the air in the shunt area 15 is discharged from the connection box 3 through the three-way reversing solenoid valve 71. This mechanism enables the distribution box for rural power grid regulation to have the functions of moisture-proof and efficient cooling, not only improving the service life and reliability of the electrical components in the distribution box, but also improving the stability of the rural power grid power supply;

[0040] While dehumidifying the main body 1 of the distribution box, the PLC controller 4 also controls the three-way reversing solenoid valve 71 and the micro electric push rod 75 to work. The three-way reversing solenoid valve 71 is controlled to change the gas transmission direction. At this time, the hot air generated on the heat dissipation side of the semiconductor refrigeration sheet 61 in the shunt area 15 enters the heat conduction coil 73. The heat conduction coil 73 conducts the heat of the hot air to the insect-proof liquid medicine in the liquid storage area 16, and accelerates the evaporation amount of the insect-proof liquid medicine by raising the temperature. At the same time, the micro electric push rod 75 contracts, and the micro electric push rod 75 drives the L-shaped rod 76 to move. The movement of the L-shaped rod 76 expands the evaporation area of the insect-proof liquid medicine at the top of the elastic liquid guide cotton core 77, further increasing the evaporation amount of the insect-proof liquid medicine in the liquid storage area 16. By increasing the content of the insect-proof liquid medicine in the main body 1 of the distribution box, the sense of smell of small animals is more strongly stimulated to cope with the situation that a large number of small animals will appear in a humid environment. In addition, if some relatively large small animals enter the main body 1 of the distribution box despite the stimulation of the insect-proof liquid medicine, at this time, the pyroelectric infrared sensor 78 will detect the infrared rays generated by the heat of these small animals and send an electric signal to the PLC controller 4. The PLC controller 4 then controls the electric bell 79 to start. The electric bell 79 generates a rapid and high-pitched driving ringtone, which can drive away the relatively large small animals in the main body 1 of the distribution box, avoiding the interference of the electrical components in the main body 1 of the distribution box by small animals. This mechanism enables the distribution box for rural power grid regulation to have the function of preventing small animals from invading, avoiding the damage of electrical components in the distribution box by small animals, improving the reliability of the distribution box, and improving the power supply stability of the rural power grid and the safety of substation equipment;

[0041] As the use time of the main body 1 of the distribution box extends, after the insect-proof liquid medicine in the liquid storage area 16 dries up, at this time, the elastic liquid guide cotton core 77 becomes dry, and the plug-in humidity sensor 87 continuously detects the humidity of the elastic liquid guide cotton core 77. If the humidity of the elastic liquid guide cotton core 77 detected by the plug-in humidity sensor 87 is lower than the warning threshold preset by the PLC controller 4, the PLC controller 4 controls the micro water pump 83 and the second normally closed solenoid valve 85 to be energized and opened for 5 seconds. During these 5 seconds, the insect-proof liquid medicine in the liquid medicine tank 81 is transported to the liquid storage area 16 of the connection box 3 through the micro water pump 83, the third conduit 84 and the second normally closed solenoid valve 85 for storage and standby. At the same time, the elastic liquid guide cotton core 77 becomes wet again. After the 5-second countdown is over, the PLC controller 4 controls the micro air pump 51 and the second normally closed solenoid valve 85 to close. This mechanism enables the insect-proof liquid medicine to have the function of automatic replenishment, reduces the cycle of replenishing and maintaining the insect-proof liquid medicine in the distribution box, and improves the convenience of using the distribution box.

[0042] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, 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 distribution box for power grid regulation and control, comprising a distribution box main body (1) and a box door (2), characterized in that, The inner wall of the box door (2) is provided with a rectangular through hole, and a connecting box (3) is fixedly connected to the hole wall of the rectangular through hole. A PLC controller (4) is fixedly connected to the outer wall of the connecting box (3). A first partition (10), a second partition (11) and a third partition (12) are fixedly connected to the inner wall of the connecting box (3). The first partition (10), the second partition (11) and the third partition (12) divide the inner cavity of the connecting box (3) into an air inlet area (13), a dehumidification area (14), a flow distribution area (15) and a liquid storage area (16). The outer wall of the connecting box (3) located in the air inlet area (13) is provided with a rectangular air inlet, and a dust-proof net plate (17) is fixedly connected to the inner wall of the rectangular air inlet. An air supply mechanism (5) is fixedly connected to the inner wall of the connecting box (3) located in the air inlet area (13). An installation hole is provided in the outer wall of the second partition (11), and a dehumidification mechanism (6) is fixedly connected to the hole wall of the installation hole. A fixed through hole is provided in the outer wall of the third partition (12), and an anti-animal intrusion mechanism (7) is fixedly connected to the hole wall of the fixed through hole. An insect repellent liquid replenishing mechanism (8) is fixedly connected to the bottom outer wall of the distribution box main body (1). The anti-animal intrusion mechanism (7) includes a three-way reversing solenoid valve (71) fixedly embedded in the third partition (12). A through hole is provided in the side wall of the second partition (11), and a U-shaped thin tube (72) is fixedly connected to the hole wall of the through hole. The air inlet end of the three-way reversing solenoid valve (71) is located inside the flow distribution area (15). One of the air outlet ends of the three-way reversing solenoid valve (71) penetrates through the top of the connecting box (3). The other air outlet end of the three-way reversing solenoid valve (71) penetrates through the third partition (12) and is fixedly communicated with a heat conduction coil tube (73). The air outlet end of the heat conduction coil tube (73) sequentially penetrates through the outer walls of the connecting box (3) and the box door (2). A sunken hole is provided in the inner wall of the connecting box (3) located in the liquid storage area (16), and a connecting cover (74) is fixedly connected to the hole wall of the sunken hole. Micro electric push rods (75) are fixedly embedded in the inner walls of both ends of the connecting cover (74). L-shaped rods (76) are fixedly connected to the opposite sides of the two micro electric push rods (75). A connecting through hole matching with the L-shaped rod (76) is provided in the outer wall of the connecting cover (74). The rod walls of the two L-shaped rods (76) are fixedly connected with an elastic liquid guiding cotton core (77). The bottom end of the elastic liquid guiding cotton core (77) passes through the bottom end of the heat conduction coil tube (73) and extends to the bottom of the liquid storage area (16). Pyroelectric infrared sensors (78) are fixedly connected to both the top inner wall and the bottom inner wall of the distribution box main body (1). An electric bell (79) is fixedly connected to the bottom inner wall of the distribution box main body (1). The insect repellent liquid replenishing mechanism (8) includes a liquid medicine tank (81) fixedly connected to the lower surface of the distribution box main body (1). An insect repellent liquid layer (82) is filled inside the liquid medicine tank (81). A micro water pump (83) is fixedly connected to the inner wall of the liquid medicine tank (81). The liquid outlet end of the micro water pump (83) is fixedly communicated with a third conduit (84). The outlet end of the third conduit (84) penetrates through the outer wall of the liquid medicine tank (81). The liquid outlet end of the third conduit (84) is fixedly communicated with a second normally closed solenoid valve (85). The liquid outlet end of the second normally closed solenoid valve (85) is fixedly communicated with the lower surface of the connection box (3) located in the liquid storage area (16). An L-shaped frame (86) is fixedly connected to the upper surface of the connection box (3). An insertion rod type humidity sensor (87) is fixedly connected to the upper surface of the L-shaped frame (86). The detection rod end of the insertion rod type humidity sensor (87) is inserted into the top end of the elastic liquid guiding cotton core (77).

2. The distribution box for power grid regulation according to claim 1, characterized in that, The air supply mechanism (5) includes a micro air pump (51) fixedly connected to the inner wall of the connection box (3). The air outlet end of the micro air pump (51) is fixedly communicated with a first conduit (52). The air outlet end of the first conduit (52) penetrates through the first partition (10) and is fixedly communicated with a hollow block (53). The upper surface of the hollow block (53) is fixedly connected to the inner wall of the connection box (3). A plurality of first air nozzles (54) are fixedly communicated with the lower surface of the hollow block (53).

3. The distribution box for power grid regulation according to claim 2, wherein, The dehumidifying mechanism (6) includes a semiconductor refrigeration sheet (61) fixedly embedded in the second partition (11). A plurality of metal mesh sheets (62) are fixedly connected to the outer wall of the refrigeration side of the semiconductor refrigeration sheet (61), and the metal mesh sheets (62) are located directly below the hollow block (53). A delivery pipe (63) is fixedly embedded at the top end of the connection box (3) located in the dehumidification area (14). The intake end of the delivery pipe (63) extends downward to the bottom of the connection box (3). The outlet end of the delivery pipe (63) is fixedly communicated with a hollow strip (64). The outer wall of the hollow strip (64) is fixedly connected to the inner wall of the distribution box main body (1). A plurality of second air nozzles (65) are fixedly communicated with both the upper surface and the lower surface of the hollow strip (64). A liquid level switch (66) is fixedly connected to the inner wall of the bottom end of the connection box (3) located in the dehumidification area (14). A first normally closed solenoid valve (67) is fixedly embedded in the lower surface of the connection box (3) located in the dehumidification area (14). The liquid outlet end of the first normally closed solenoid valve (67) is fixedly communicated with a second conduit (68). The water outlet end of the second conduit (68) penetrates through the outer wall of the box door (2). A first humidity sensor (69) is fixedly connected to the inner wall of the top end of the distribution box main body (1).

4. The distribution box for power grid regulation according to claim 1, characterized in that, A rubber cover (18) is fixedly connected to the rod walls of the two L-shaped rods (76). The top end of the rubber cover (18) is fixedly connected to the lower surface of the connection cover (74).

5. A distribution box for power grid regulation according to claim 1, characterized in that, The insect repellent liquid layer (82) is any one of peppermint oil and lavender essential oil.

6. The distribution box for power grid regulation according to claim 3, characterized in that, The outer wall of the heat dissipation side of the semiconductor refrigeration sheet (61) is fixedly connected with a heat sink (9), and the air outlet end of the U-shaped thin tube (72) is located below the heat sink (9).

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