High-low voltage power distribution cabinet based on remote information transmission control

Abstract

The invention belongs to the technical field of power distribution cabinets, and particularly relates to a high-low voltage power distribution cabinet based on remote information transmission control, the high-low voltage power distribution cabinet comprises a cabinet body and a cabinet door hinged to the front end of the cabinet body, a power distribution assembly and an electric control part are installed in the cabinet body, a communication assembly is installed at the cabinet body, and the communication assembly is in communication connection with the electric control part. A display control assembly is installed on the side wall of the cabinet door. The power distribution cabinet can be controlled in a remote communication mode, external electromagnetic interference is effectively eradicated, smooth transmission of remote control signals is ensured, regional heat dissipation can be carried out on the interior of the power distribution cabinet, heat dissipation airflow is flexibly regulated and controlled based on the temperature of each region, the utilization sufficiency of the heat dissipation airflow is improved, and the service life of the power distribution cabinet is prolonged. And meanwhile, sealing detection can be carried out on the joint of the cabinet body and the cabinet door at regular intervals, personnel are reminded in time when sealing is poor, and the situation that the electromagnetic shielding effect is affected by the sealing leakage position is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of power distribution cabinets, and in particular relates to a high and low voltage power distribution cabinet based on remote information transmission control. Background Art

[0002] In modern power systems, high and low voltage power distribution cabinets, as core power distribution equipment, bear the heavy responsibility of power distribution and control. With the rise of remote information transmission control technology, by integrating sensors, intelligent modules, etc. in the power distribution cabinet and combining with wireless communication and Internet of Things technology, the operation data can be uploaded in real time to achieve remote monitoring, fault warning and intelligent regulation, ensuring the stable and efficient operation of the power system.

[0003] For example, an intelligent remote control power distribution cabinet disclosed in the patent publication number CN119171212B can achieve remote communication through the set signal transmission component, which is convenient for centralized control by remote terminals. In order to prevent communication modules similar to the signal transmission component from being affected by electromagnetic interference, good electromagnetic protection needs to be carried out at the power distribution cabinet, such as using a metal cabinet body and ensuring the stability of grounding, etc., to ensure the stability of communication signals. However, the cabinet door of the power distribution cabinet integrates instruments, indicators, etc. (structures for personnel to view the operation status), and most of these components do not have good electromagnetic shielding effects, and external electromagnetic waves are likely to enter the cabinet interior through this to interfere with communication. In addition, although there is a rubber sealing strip between the cabinet door and the cabinet body, the protection effect against electromagnetic interference is also relatively limited. Summary of the Invention

[0004] The purpose of the present invention is to address the above problems and provide a high and low voltage power distribution cabinet based on remote information transmission control.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A high and low voltage power distribution cabinet based on remote information transmission control includes a cabinet body and a cabinet door hinged to the front end of the cabinet body. A power distribution component and an electric control unit are installed inside the cabinet body. A communication component is installed at the cabinet body, and the communication component is communicatively connected to the electric control unit. A display control component is installed on the side wall of the cabinet door, and further includes: A metal movable frame is provided between the cabinet door and the cabinet body. A frame-shaped groove is opened on the side wall of the cabinet door close to the cabinet body, and the metal movable frame is slidably arranged inside the frame-shaped groove. Two frame-shaped rubber pads and a metal mesh frame are fixedly installed on the side wall of the frame-shaped groove, and the metal mesh frame is arranged between the two frame-shaped rubber pads. An expansion extrusion mechanism is arranged inside the frame-shaped groove; A metal fixed frame is installed on the side wall of the cabinet door far from the cabinet body. A conductive glass plate is installed on the side wall of the metal fixed frame far from the cabinet door. The metal fixed frame and the conductive glass plate are used for electromagnetic shielding of the display control component; An inflation unit is arranged on one side of the cabinet door, and the inflation unit is used to inflate the inside of the expansion and extrusion mechanism. A heat dissipation unit is installed on the back of the cabinet body, and the heat dissipation unit is communicated with the inner side of the metal fixing frame.

[0006] Preferably, the communication component includes a wireless communicator arranged above the cabinet body. The wireless communicator is communicatively connected with the electric control part through a shielded cable, and the electric control part interacts and communicates with a remote terminal through the shielded cable and the wireless communicator.

[0007] Preferably, the display control component includes a plurality of meters and indicator lights arranged on the side wall of the cabinet door. The meters and indicator lights are both arranged inside the metal fixing frame. A wiring terminal component is installed at the position of the side wall of the cabinet door inside the metal fixing frame. A plurality of control buttons are fixedly installed on the outer side wall of the metal fixing frame, and the control buttons are connected to the power distribution component and the electric control part through the wiring terminal component.

[0008] Preferably, the expansion and extrusion mechanism includes an air groove opened at the bottom of the frame-shaped groove. The air groove is in a frame shape. A detachable crimping component is arranged at the notch of the air groove, and an elastic airbag film is installed at the notch of the air groove through the crimping component. The elastic airbag film seals and plugs the notch of the air groove. A limit support component is installed on the side wall of the crimping component. The metal movable frame is slidably connected to the shaft rod of the limit support component.

[0009] Preferably, the inflation unit includes an air pump fixedly installed at the bottom of the metal fixing frame. The air inlet end of the air pump is communicated with the inside of the metal fixing frame. A plurality of inflation holes are opened at the bottom of the air groove, and an inflation electric control valve is installed inside each inflation hole. The air pump and the inflation electric control valve are both electrically connected to the electric control part.

[0010] Preferably, the heat dissipation unit includes a metal hollow plate arranged on the back of the cabinet body. A plurality of connecting hoses are fixedly communicated between the metal hollow plate and the side wall of the metal fixing frame. A plurality of partition frames are fixedly connected between the side wall of the metal hollow plate and the back of the cabinet body, and a plurality of heat dissipation holes are opened on the side wall of each partition frame. A plurality of ventilation holes communicated with the partition frames are opened on the side wall of the metal hollow plate. A plurality of insulating heat conducting rods are arranged inside each partition frame, and one end of each insulating heat conducting rod is fixedly inserted into the back of the cabinet body and corresponds to the position of the power distribution component. A heat dissipation electric control valve is installed at the position of the air inlet end of each connecting hose on the side wall of the metal fixing frame, and the heat dissipation electric control valve is electrically connected to the electric control part.

[0011] Preferably, a pressurizing hole is formed at a position on the side wall of the cabinet door inside the metal fixing frame, and a pressurizing electric control valve is installed inside the pressurizing hole. An installation rack is fixedly installed on the inner wall of the metal fixing frame, and a pneumatic detection sensor is installed on the installation rack. Both the pressurizing electric control valve and the pneumatic detection sensor are electrically connected to the electric control part.

[0012] Preferably, a thermistor wire is inserted into each of the insulating and heat-conducting rods, and a proportional electric control valve is installed inside each of the ventilation holes. The thermistor wires inside the same partition frame are connected in series, and the electric control part controls the opening and closing degree of the corresponding proportional electric control valve according to the resistance value of the thermistor wire inside each partition frame.

[0013] Compared with the existing technology, the advantages of a high and low voltage power distribution cabinet based on remote information transmission control are as follows: 1. Through the mutual cooperation of the cabinet body, cabinet door, electric control part and communication component, the power distribution cabinet can be controlled by means of remote communication. And through the mutual cooperation of the metal movable frame, frame-shaped groove, frame-shaped rubber pad, metal mesh frame, expansion extrusion mechanism, metal fixing frame, conductive glass plate and inflation unit, the connection gap between the cabinet door and the cabinet body can be sealed and electromagnetic shielding can be carried out. Secondly, electromagnetic shielding can be carried out on the display control component of the power distribution cabinet, so as to effectively prevent external electromagnetic interference from entering the cabinet body through the gap between the cabinet door and the cabinet body and the display control area on the side wall of the cabinet door, and ensure the smooth transmission of remote control signals.

[0014] 2. Through the arranged heat dissipation unit, the power distribution cabinet can be cooled in different areas, and with the cooperation of the thermistor wire and the proportional electric control valve, the cooling air flow in each area can be flexibly regulated based on the temperature of each area, improving the utilization efficiency of the cooling air flow.

[0015] 3. Through the mutual cooperation of the pressurizing hole, pressurizing electric control valve, installation rack and pneumatic detection sensor, the connection between the cabinet body and the cabinet door can be regularly sealed and detected, so that personnel can be reminded in time when the sealing is poor, to avoid the influence of the sealing leakage position on the electromagnetic shielding effect. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a high and low voltage power distribution cabinet based on remote information transmission control provided by the present invention; Figure 2 is a three-dimensional structural diagram of the cabinet door of a high and low voltage power distribution cabinet based on remote information transmission control provided by the present invention; Figure 3 is a schematic internal structure diagram of the metal fixing frame of a high and low voltage power distribution cabinet based on remote information transmission control provided by the present invention; Figure 4It is a schematic diagram of the connection structure between the metal mesh frame and the side wall of the cabinet door of a high and low voltage power distribution cabinet based on remote information transmission control provided by the present invention; Figure 5 It is a schematic diagram of the internal structure of the frame-shaped groove and the air groove of a high and low voltage power distribution cabinet based on remote information transmission control provided by the present invention; Figure 6 It is a three-dimensional structure schematic diagram of the metal hollow plate of a high and low voltage power distribution cabinet based on remote information transmission control provided by the present invention; Figure 7 It is a high and low voltage power distribution cabinet based on remote information transmission control provided by the present invention Figure 6 The enlarged structure diagram of part A in it.

[0017] In the figure: 1 cabinet body, 2 cabinet door, 3 electric control part, 4 communication component, 41 wireless communicator, 42 shielding cable, 5 display control component, 51 instrument, 52 indicator light, 53 wiring terminal component, 54 control button, 6 metal movable frame, 7 frame-shaped groove, 8 frame-shaped rubber pad, 9 metal mesh frame, 10 expansion extrusion mechanism, 101 air groove, 102 crimping component, 103 elastic airbag film, 104 limit support component, 11 metal fixed frame, 12 conductive glass plate, 13 inflation unit, 131 air pump, 132 inflation hole, 133 inflation electric control valve, 14 heat dissipation unit, 141 metal hollow plate, 142 connecting hose, 143 partition frame, 144 heat dissipation hole, 145 ventilation hole, 146 insulating heat conduction rod, 147 heat dissipation electric control valve, 15 pressure hole, 16 pressure electric control valve, 17 mounting rack, 18 air pressure detection sensor, 19 thermistor wire, 20 proportional electric control valve. Specific implementation manners

[0018] 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.

[0019] As Figures 1-7 shown, a high and low voltage power distribution cabinet based on remote information transmission control includes a cabinet body 1 and a cabinet door 2 hinged to the front end of the cabinet body 1. A power distribution component and an electric control part 3 are installed inside the cabinet body 1. A communication component 4 is installed at the cabinet body 1. The communication component 4 is communicatively connected to the electric control part 3. The communication component 4 includes a wireless communicator 41 arranged above the cabinet body 1. The wireless communicator 41 is communicatively connected to the electric control part 3 through a shielding cable 42. The electric control part 3 interacts and communicates with a remote terminal through the shielding cable 42 and the wireless communicator 41.

[0020] A display control component 5 is installed on the side wall of the cabinet door 2. The display control component 5 includes a plurality of meters 51 and indicator lights 52 arranged on the side wall of the cabinet door 2. Both the meters 51 and the indicator lights 52 are arranged inside the metal fixing frame 11. A wiring terminal component 53 is installed at a position on the side wall of the cabinet door 2 inside the metal fixing frame 11. A plurality of control buttons 54 are fixedly installed on the outer side wall of the metal fixing frame 11, and the control buttons 54 are connected to the power distribution component and the electronic control unit 3 through the wiring terminal component 53. The connecting cable between the wiring terminal component 53 and the control buttons 54 is connected by a cable with a shielding electromagnetic structure.

[0021] A metal movable frame 6 is arranged between the cabinet door 2 and the cabinet body 1. A frame-shaped groove 7 is opened on the side wall of the cabinet door 2 close to the cabinet body 1, and the metal movable frame 6 is slidably arranged inside the frame-shaped groove 7. Two frame-shaped rubber pads 8 and a metal mesh frame 9 are fixedly installed on the side wall of the frame-shaped groove 7. The metal mesh frame 9 is arranged between the two frame-shaped rubber pads 8. An expansion and extrusion mechanism 10 is arranged inside the frame-shaped groove 7. The expansion and extrusion mechanism 10 includes an air groove 101 opened at the bottom of the frame-shaped groove 7, and the air groove 101 is in a frame shape. A detachable crimping component 102 is arranged at the notch of the air groove 101, and an elastic airbag film 103 is installed at the notch of the air groove 101 through the crimping component 102. The elastic airbag film 103 seals and plugs the notch of the air groove 101. A limit support component 104 is installed on the side wall of the crimping component 102. The metal movable frame 6 is slidably connected to the shaft rod of the limit support component 104. The limit support component 104 includes two crimping frames and components such as screws. The screws lock the crimping frames at the bottom of the frame-shaped groove 7 and are located at the notch of the air groove 101, while the crimping frames stably press and fix the elastic airbag film 103. The limit support component 104 includes a plurality of limit sliding rods and limit blocks. The limit sliding rods are slidably connected to the side wall of the metal movable frame 6. The limit blocks are threadedly assembled on the limit sliding rods to prevent the metal movable frame 6 from detaching, ensuring the stable movement and preventing the detachment of the metal movable frame 6.

[0022] The metal fixing frame 11 is installed on the side wall of the cabinet door 2 away from the cabinet body 1. A conductive glass plate 12 is installed on the side wall of the metal fixing frame 11 away from the cabinet door 2. The metal fixing frame 11 and the conductive glass plate 12 are used for electromagnetic shielding of the display control component 5. The inflation unit 13 is arranged on one side of the cabinet door 2 and is used for inflating the inside of the expansion and extrusion mechanism 10. The inflation unit 13 includes an air pump 131 fixedly installed at the bottom of the metal fixing frame 11, and the air inlet end of the air pump 131 is communicated with the inside of the metal fixing frame 11. A plurality of inflation holes 132 are opened at the bottom of the air groove 101, and an inflation electric control valve 133 is installed inside each inflation hole 132. The air pump 131 and the inflation electric control valve 133 are both electrically connected to the electric control unit 3. A check valve is arranged at the inflation end of the air pump 131 to prevent air flow from flowing back and escaping through the air pump 131. A metal screen is arranged at the inflation end of the air pump 131, and the metal screen is connected to the metal fixing frame 11 and is used for shielding the clutter passing through the inflation end of the air pump 131.

[0023] The heat dissipation unit 14 is installed on the back of the cabinet body 1 and is communicated with the inner side of the metal fixing frame 11. The heat dissipation unit 14 includes a metal hollow plate 141 arranged on the back of the cabinet body 1. A plurality of connecting hoses 142 are fixedly connected and communicated between the metal hollow plate 141 and the side wall of the metal fixing frame 11. A plurality of partition frames 143 are fixedly connected between the side wall of the metal hollow plate 141 and the back of the cabinet body 1, and a plurality of heat dissipation holes 144 are opened on the side walls of each partition frame 143. A plurality of ventilation holes 145 communicating with the partition frames 143 are opened on the side wall of the metal hollow plate 141. A plurality of insulating heat conduction rods 146 are arranged inside each partition frame 143, and one end of each insulating heat conduction rod 146 is fixedly inserted into the back of the cabinet body 1 and corresponds to the position of the power distribution component. Heat dissipation electric control valves 147 are installed at the positions of the side wall of the metal fixing frame 11 where the air inlet ends of the connecting hoses 142 are located, and the heat dissipation electric control valves 147 are electrically connected to the electric control unit 3. The insulating heat conduction rods 146 can conduct and dissipate the heat inside the cabinet body 1 to the outside. The connecting hoses 142 are made of metal corrugated hoses to prevent clutter from entering the inside of the metal fixing frame 11 through the connection between the connecting pipe 142 and the metal fixing frame 11.

[0024] A pressurization hole 15 is opened at the position of the side wall of the cabinet door 2 inside the metal fixing frame 11, and a pressurization electric control valve 16 is installed inside the pressurization hole 15. An installation frame 17 is fixedly installed on the inner wall of the metal fixing frame 11, and a pressure detection sensor 18 is installed on the installation frame 17. The pressurization electric control valve 16 and the pressure detection sensor 18 are both electrically connected to the electric control unit 3. The pressure detection sensor 18 can feedback an electric signal to the electric control unit 3 when the air pressure reaches the set threshold.

[0025] A thermal resistor wire 19 is inserted into each of the insulating and heat-conducting rods 146, and a proportional electro-control valve 20 is installed inside each of the ventilation holes 145. The thermal resistor wires 19 inside the same partition frame 143 are connected in series. The electro-control unit 3 controls the opening and closing degree of the corresponding proportional electro-control valve 20 according to the resistance value of the thermal resistor wire 19 inside each partition frame 143. Within a certain temperature range, the resistance of the thermal resistor wire 19 decreases as the temperature rises. By monitoring the temperature of each area, the heat dissipation efficiency of each area can be flexibly adjusted, and to a certain extent, the utilization sufficiency of the heat dissipation air flow can be improved.

[0026] The operating principle of the present invention will be described as follows: When remote control of the power distribution cabinet is required, an instruction is sent through the remote terminal. The instruction is transmitted to the wireless communicator 41 through wireless communication. The wireless communicator 41 then conducts the instruction information to the electro-control unit 3 through the shielded cable 42. The electro-control unit 3 then executes the corresponding instruction actions. Similarly, the electro-control unit 3 can transmit the operation information of the power distribution components and various sensor data inside the cabinet body 1 to the remote terminal through the shielded cable 42 and the wireless communicator 41 (wherein, the wireless communicator 41 can be installed in a position with less shielding such as on the roof, which is beneficial to remote wireless communication, and the sensor is used to detect various parameters inside the cabinet body 1, such as temperature, humidity, flue gas, etc.); After the cabinet door 2 is closed, the electronic control unit 3 will perform a sealing action and a detection action (a pressure switch is provided at the closing position of the cabinet body 1 and the cabinet door 2. When the cabinet door 2 is opened, the contacts of the pressure switch are disconnected, and when the cabinet door 2 is closed, the contacts of the pressure switch are closed. At this time, the electronic control unit 3 will perform a sealing action and a detection action once). When the electronic control unit 3 performs the sealing action, it will first control the air inflation pump 131 to work, and at the same time control the inflation electronic control valves 133 in each inflation hole 132 to be energized and opened. At this time, the air flow transported into the interior of the metal fixing frame 11 by the air inflation pump 131 will enter the interior of the air groove 101 through each inflation hole 132, so that the air pressure inside the air groove 101 will increase. Under the action of the increased air pressure, the elastic airbag film 103 will start to expand, thus pushing the metal movable frame 6 to move. The metal movable frame 6 will drive the frame-shaped rubber pad 8 and the metal mesh frame 9 to move towards the cabinet body 1, so that the metal movable frame 6 and the frame-shaped rubber pad 8 can be abutted against the side wall of the cabinet body 1. Under the action of the frame-shaped rubber pad 8, the gap between the cabinet door 2 and the side wall of the cabinet body 1 is sealed, and under the action of the metal mesh frame 9, electromagnetic shielding can be performed on the gap. When the air pressure detection sensor 18 detects that the air pressure inside the metal fixing frame 11 reaches 0.3 MPa (since the inflation electronic control valve 133 remains open at this time, the air pressure in the air groove 101 is the same as that in the metal fixing frame 11), the air pressure detection sensor 18 will feedback an electrical signal to the electronic control unit 3. At this time, the electronic control unit 3 will control each inflation electronic control valve 133 to close and control the air inflation pump 131 to stop working. When it is necessary to open the cabinet door 2, press the control button 54 corresponding to the side wall of the metal fixing frame 11. At this time, the electronic control unit 3 will control each inflation electronic control valve 133 to be energized and opened again. The redundant air in the air groove 101 will flow back into the metal fixing frame 11 through the inflation holes 132, and the elastic airbag film 103 will rebound and recover under its own elastic action. Therefore, when the cabinet door 2 is opened and closed subsequently, since the metal mesh frame 9 and the frame-shaped rubber pad 8 are not blocked by the elastic airbag film 103, the wear and impact on them by the side wall of the cabinet body 1 become smaller, avoiding the wear and deformation of the frame-shaped rubber pad 8 and the metal mesh frame 9 due to the frictional force and impact force during the opening and closing of the cabinet door 2, which is beneficial for the metal mesh frame 9 and the frame-shaped rubber pad 8 to continuously maintain a good sealing effect and electromagnetic shielding effect; Secondly, the staff can view the instrument 51 and the indicator light 52 on the side wall of the cabinet door 2 through the conductive glass plate 12 to judge the operating state of the power distribution components inside the cabinet body 1. They can also control the electric control unit 3 and the power distribution components to perform corresponding actions through the control button 54 on the side wall of the metal fixing frame 11. Under the action of the conductive glass plate 12 and the metal fixing frame 11, electromagnetic shielding can be carried out at the instrument 51 and the indicator light 52 (the metal fixing frame 11 and the conductive glass plate 12 can form a closed electromagnetic shielding space. When external electromagnetic waves encounter the metal fixing frame 11 and the conductive glass plate 12, induced currents and induced magnetic fields will be generated on the surface of the metal and the conductive layer of the conductive glass plate 12. These induced currents and magnetic fields will interact with the external electromagnetic waves. Part of the electromagnetic waves will be reflected back, and part will be absorbed and attenuated, thus achieving the effect of shielding electromagnetic waves), preventing external clutter from entering the inside of the cabinet body 1 through the instrument 51 and the indicator light 52, and further improving the electromagnetic shielding effect; After the above-mentioned sealing action is completed (that is, the electric control unit 3 controls the inflation solenoid valve 133 to cut off the power supply and close, and controls the inflation pump 131 to stop working), the electric control unit 3 starts to execute the detection action. At this time, the electric control unit 3 will control the inflation pump 131 to work again and control the pressurization solenoid valve 16 to be energized and opened. At this time, the air flow conveyed by the inflation pump 131 into the inside of the metal fixing frame 11 will enter the inside of the cabinet body 1 through the pressurization hole 15, so that the air pressure inside the cabinet body 1 and the metal fixing frame 11 increases. At this time, when the air pressure reaches 0.2 MPa, the air pressure detection sensor 18 will feedback an electrical signal to the electric control unit 3, and the electric control unit 3 will immediately control the inflation pump 131 to stop working. Within 2 minutes, if there is a sealing leakage point at the connection between the cabinet door 2 and the cabinet body 1, the high-pressure air inside the cabinet body 1 will escape, resulting in a decrease in the air pressure inside the cabinet body 1 and the metal fixing frame 11. At this time, the electrical signal feedback from the air pressure detection sensor 18 to the electric control unit 3 will be disconnected, indicating that there is a sealing leakage point between the cabinet body 1 and the cabinet door 2. The electric control unit 3 will immediately send relevant warning information to the remote terminal to remind the personnel to deal with the sealing leakage point in time, such as replacing the frame-shaped rubber pad 8, etc. On the contrary, within 2 minutes, the electrical signal feedback from the air pressure detection sensor 18 to the electric control unit 3 is not disconnected, indicating that there is good sealing between the cabinet door 2 and the cabinet body 1. At this time, the electric control unit 3 will control the pressurization solenoid valve 16 to cut off the power supply and close (wherein, a check valve is provided at the inflation end of the inflation pump 131 to prevent the air flow from flowing back and escaping through the inflation pump 131); During the normal operation of the distribution cabinet, the distribution components inside it will generate heat when working, and the heat will be conducted to each insulating heat-conducting rod 146, thereby causing the temperature at the thermistor wire 19 inside each insulating heat-conducting rod 146 to rise. The resistance of the thermistor wire 19 itself decreases as the temperature rises within the range of 0°C to 120°C. Therefore, the overall resistance of the connection circuit between the thermistor wire 19 and the electronic control unit 3 within the same partition frame 143 decreases. When the measurement circuit inside the electronic control unit 3 detects that the resistance has decreased to 500 Ω, the electronic control unit 3 will initiate a heat dissipation operation. At this time, the electronic control unit 3 will control the inflation pump 131 to work again and control each heat dissipation electronic control valve 147 to be energized and opened. At this time, the airflow delivered into the metal fixing frame 11 will enter the metal hollow plate 141 through the connecting hose 142, enter the partition frame 143 through the ventilation holes 145, and then be discharged through the heat dissipation holes 144 on the side wall of the partition frame 143. Under the action of the flowing airflow, it can cooperate with the insulating heat-conducting rod 146 to dissipate heat from the inside of the cabinet 1. Secondly, after the electronic control unit 3 detects the resistance of the thermistor wire 19 on the inner side of each partition frame 143, the smaller the resistance of the series circuit of the thermistor wire 19 on the inner side of each partition frame 143, the higher the temperature of this area. At this time, the electronic control unit 3 controls the opening degree of the proportional electronic control valve 20 at this position to be larger. In the area with a relatively low temperature, the resistance of the series circuit of each thermistor wire 19 is relatively large. At this time, the electronic control unit 3 controls the opening degree of the proportional electronic control valve 20 at this position to be smaller. Thus, under the action of the same gas flow rate, part of the airflow passing through the low-temperature area is transferred to the high-temperature area, so that the heat dissipation airflow can be utilized more fully, which is conducive to improving the heat dissipation efficiency. Secondly, the electronic control unit 3 can control the output power of the inflation pump 131 according to the overall resistance of the thermistor wire 19. For example, when the distribution components are operating at a high load, the heat generated by them is relatively large as a whole. At this time, the resistance of the thermistor wire 19 in each area remains in a relatively small state. At this time, in order to meet the heat dissipation requirements, the electronic control unit 3 controls the output power of the inflation pump 131 to increase (the inflation pump 131 has three output gears, namely low gear, medium gear, and high gear. At 30°C to 45°C, the inflation pump 131 operates at a low gear. At 45°C to 60°C, it operates at a medium gear. When the temperature is higher than 60°C, it operates at a high gear).

[0027] 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 principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high and low voltage power distribution cabinet based on telematics control, comprising a cabinet body (1) and a cabinet door (2) hinged to the front end of the cabinet body (1). A power distribution component and an electric control unit (3) are installed inside the cabinet body (1). A communication component (4) is installed at the cabinet body (1), and the communication component (4) is communicatively connected to the electric control unit (3). A display control component (5) is installed on the side wall of the cabinet door (2), and it is characterized in that, It further includes: A metal movable frame (6) is arranged between the cabinet door (2) and the cabinet body (1). A frame-shaped groove (7) is formed in the side wall of the cabinet door (2) on the side close to the cabinet body (1). The metal movable frame (6) is slidably arranged inside the frame-shaped groove (7). Two frame-shaped rubber pads (8) and a metal mesh frame (9) are fixedly installed on the side wall of the frame-shaped groove (7). The metal mesh frame (9) is arranged between the two frame-shaped rubber pads (8). An expansion extrusion mechanism (10) is arranged inside the frame-shaped groove (7). A metal fixed frame (11) is installed on the side wall of the cabinet door (2) on the side away from the cabinet body (1). A conductive glass plate (12) is installed on the side wall of the metal fixed frame (11) away from the cabinet door (2). The metal fixed frame (11) and the conductive glass plate (12) are used for electromagnetic shielding of the display control component (5). An inflation unit (13) is arranged on one side of the cabinet door (2). The inflation unit (13) is used for inflating the inside of the expansion extrusion mechanism (10). A heat dissipation unit (14) is installed on the back of the cabinet body (1), and the heat dissipation unit (14) is communicated with the inside of the metal fixed frame (11).

2. The high and low voltage power distribution cabinet based on remote information transmission control according to claim 1, characterized in that, The communication component (4) includes a wireless communicator (41) arranged above the cabinet body (1). The wireless communicator (41) is communicatively connected with the electric control unit (3) through a shielded cable (42). The electric control unit (3) interacts and communicates with a remote terminal through the shielded cable (42) and the wireless communicator (41).

3. A high and low voltage power distribution cabinet based on remote information transmission control according to claim 1, characterized in that, The display control component (5) includes a plurality of meters (51) and indicator lights (52) arranged on the side wall of the cabinet door (2). The meters (51) and the indicator lights (52) are both arranged inside the metal fixed frame (11). A terminal block assembly (53) is installed at a position on the side wall of the cabinet door (2) inside the metal fixed frame (11). A plurality of control buttons (54) are fixedly installed on the outer side wall of the metal fixed frame (11), and the control buttons (54) are connected to the power distribution component and the electric control unit (3) through the terminal block assembly (53).

4. A high and low voltage power distribution cabinet based on remote information transmission control according to claim 1, characterized in that, The expansion extrusion mechanism (10) includes an air groove (101) formed at the bottom of the frame-shaped groove (7). The air groove (101) is in a frame shape. A detachable crimping component (102) is arranged at the notch of the air groove (101). An elastic airbag film (103) is installed at the notch of the air groove (101) through the crimping component (102). The elastic airbag film (103) seals the notch of the air groove (101). A limiting support component (104) is installed on the side wall of the crimping component (102). The metal movable frame (6) is slidably connected to the shaft rod of the limiting support component (104).

5. A high and low voltage power distribution cabinet based on remote information transmission control according to claim 4, characterized in that, The inflation unit (13) includes an inflation pump (131) fixedly installed at the bottom of the metal fixing frame (11), and the intake end of the inflation pump (131) is communicated with the inside of the metal fixing frame (11). A plurality of inflation holes (132) are formed in the bottom of the air groove (101), and an inflation electric control valve (133) is installed inside each inflation hole (132). The inflation pump (131) and the inflation electric control valve (133) are both electrically connected to the electric control unit (3).

6. The high and low voltage power distribution cabinet based on remote information transmission control according to claim 1, characterized in that, The heat dissipation unit (14) includes a metal hollow plate (141) arranged on the back of the cabinet body (1). A plurality of connecting hoses (142) are fixedly communicated between the metal hollow plate (141) and the side wall of the metal fixing frame (11). A plurality of partition frames (143) are fixedly connected between the side wall of the metal hollow plate (141) and the back of the cabinet body (1), and a plurality of heat dissipation holes (144) are formed in the side walls of the partition frames (143). A plurality of ventilation holes (145) communicating with the partition frames (143) are formed in the side wall of the metal hollow plate (141). A plurality of insulating heat conducting rods (146) are arranged inside each partition frame (143), and one end of each insulating heat conducting rod (146) is fixedly inserted into the back of the cabinet body (1) and corresponds to the position of the power distribution component. A heat dissipation electric control valve (147) is installed at the position of the intake end of each connecting hose (142) on the side wall of the metal fixing frame (11), and the heat dissipation electric control valve (147) is electrically connected to the electric control unit (3).

7. A high and low voltage power distribution cabinet based on remote information transmission control according to claim 1, characterized in that A pressurization hole (15) is formed in the side wall of the cabinet door (2) at the position inside the metal fixing frame (11), and a pressurization electric control valve (16) is installed inside the pressurization hole (15). A mounting frame (17) is fixedly installed on the inner wall of the metal fixing frame (11), and a pressure detection sensor (18) is installed on the mounting frame (17). The pressurization electric control valve (16) and the pressure detection sensor (18) are both electrically connected to the electric control unit (3).

8. A high and low voltage power distribution cabinet based on remote information transmission control according to claim 6, characterized in that, A thermistor wire (19) is inserted into each of the insulating heat conducting rods (146). A proportional electric control valve (20) is installed inside each of the ventilation holes (145). The thermistor wires (19) inside the same partition frame (143) are connected in series. The electric control unit (3) controls the opening and closing degree of the corresponding proportional electric control valve (20) according to the resistance value of the thermistor wire (19) inside each partition frame (143).

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