A power system monitoring device

Abstract

The present invention relates to the field of power system protection, specifically to a power system monitoring device, comprising a box body, in which a power-off protection unit is arranged; the power-off protection unit comprises a temperature detection module and an execution module; the temperature detection module is installed in equipment installed in the power system; the execution module is connected to the temperature detection module via a wireless module, and the execution module comprises a plurality of covers; a screw drive push block performs a relatively away movement, the push block drives the rear side of the sleeve away from the U-shaped plate, and at the same time the push block also drives the horizontal end of the connecting rod to disengage from the connecting hole, at which time the power is cut off from the No. 1 sleeve and the No. 2 sleeve, and the circuit connecting the equipment or device to the power system is disconnected, thereby realizing protection of the equipment or device, and at the same time the connecting rod and the sleeve in the execution module are separated from the No. 2 sleeve and the No. 2 sleeve respectively, thereby increasing the possibility of power off and contributing to improving the power off safety of the power system.

Description

Technical Field

[0001] The present invention relates to the field of power system protection, and in particular to a power system monitoring device. Background Art

[0002] The power system is a unified whole composed of power generation, power supply, power consumption facilities, as well as the secondary facilities such as regulation and control, relay protection and safety automatic devices, metering devices, dispatching automation, power communications, etc. required to ensure its normal operation. Nowadays, with the cooperation of intelligent systems, the power system has become more stable during operation.

[0003] When electrical equipment or devices are connected to the power controller in the power system, the power controller system can respond quickly and cut off the power for protection when a sudden problem occurs in the equipment or device. However, the power controller has its own current threshold. When the equipment or device is under high load for a long time, part of the electrical energy will be converted into heat energy, causing internal heat in the equipment or device. Failure to detect the danger in time will create a dangerous operating environment for the equipment or device, especially in a high-temperature natural environment. It will be a burden for the equipment or device. When the burden exceeds the tolerance of the equipment or device, the equipment or device will be damaged and will need to be repaired or replaced later, causing greater losses.

[0004] Therefore, in order to solve the above problems, a power system monitoring device is proposed. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: the power system monitoring device described in the present invention includes a box body, in which a power-off protection unit is provided; the power-off protection unit includes a temperature detection module and an execution module; the temperature detection module is installed in a device installed in the power system; the execution module is connected to the temperature detection module via a wireless module, and the execution module includes a plurality of covers; windows are provided on the side walls of the box body, a cover is installed outside each window, and a motor is installed in each cover body, a screw rod is fixedly connected to the output end of the motor, a push block is symmetrically connected to the screw rod, and sleeves are provided on the opposite end faces of the two push blocks on the same screw rod;

[0007] A U-shaped plate is provided below the screw rod, and a No. 1 sleeve is fixedly connected below the U-shaped plate, and an electric wire is fixedly connected to the lower end of the No. 1 sleeve; an L-shaped connecting rod is provided at the upper end of each push block, and the horizontal ends of the two opposite connecting rods are arranged oppositely, and a connecting block is provided at the horizontal end of each connecting rod, and a connecting hole is provided at a position opposite to the horizontal end of the connecting block and the connecting rod, and a No. 2 sleeve is fixedly connected to the upper end surface of the connecting block, and an electric wire is fixedly connected to the No. 2 sleeve;

[0008] A guide rod is slidably connected in the upper half of the push block, and the end of the guide rod passes through the push block. The end of the guide rod is fixed to the side wall of the cover body through a nut.

[0009] Preferably, the end of each U-shaped plate opposite to the push block is expanded; and the outer ring of the sleeve is arranged in a truncated cone shape.

[0010] Preferably, each of the screw rods is symmetrically provided with two No. 1 threads and two No. 2 threads, the two No. 1 threads are arranged close to the end of the screw rod, and the No. 1 threads are transmission-connected to the push block; the two No. 2 threads are symmetrically arranged close to the middle position of the screw rod, and an insulating component is provided on the No. 2 thread; the insulating component includes a push plate transmission-connected to the No. 2 thread, and an insulating plate fixed to the end face of the push plate, the insulating plate is adapted to the shape of the U-shaped plate, and the insulating plate is horizontally slidably connected in the U-shaped push plate.

[0011] Preferably, the connecting hole is arranged in a truncated cone shape; and a truncated cone-shaped plug is provided at the horizontal end of the connecting rod.

[0012] Preferably, a piston rod is fixedly connected to the rear side wall of the upper half of each push block, a piston cylinder is fixedly connected to the inner wall of each cover body, the piston rod is inserted in the piston cylinder, the bottom of the piston cylinder is connected to an air pipe, a gas pressure relief valve is provided on the air pipe, and the end of the air pipe is fixedly connected to the connecting block; a plurality of air jet holes are opened on the inner wall of the connecting hole, and the air jet holes are connected to the air pipe.

[0013] Preferably, the exhaust direction of each of the air jet holes is tilted toward the small hole end position of the connecting hole.

[0014] Preferably, the outer outer ring of each window is provided with a slot inclined downward, the shape of the slot is the same as the shape of the port of the cover body, and the port of each cover body is provided with an insert plate inclined upward, and the insert plate is arranged in a ring along the port of the cover body, and the insert plate can be inserted into the cover body; support plates are provided on the side walls of both sides of the box body, one side of the support plate is fixed to the position below the window by a thread, and the horizontal end of the support plate is lifted on the lower surface of the cover body.

[0015] Preferably, a limiting groove is provided on the lower surface of each of the cover bodies; and a strip-shaped anti-slip portion is provided on the upper surface of the horizontal end portion of each of the support plates, and the anti-slip portion is embedded in the limiting groove.

[0016] Preferably, the upper end surface and the lower end surface of the box body are respectively provided with a through hole, and a guide cylinder is fixedly connected to each through hole position, and the wire passes through the guide cylinder and is inserted into the No. 1 sleeve and the No. 2 sleeve.

[0017] Preferably, each guide cylinder is threadedly connected with a wire pressing screw.

[0018] The present invention is beneficial in that:

[0019] 1. In the present invention, the push block is driven by the screw rod to make a relatively away movement, and the push block drives the rear side of the sleeve away from the U-shaped plate. At the same time, the push block also drives the horizontal end of the connecting rod to disengage from the connecting hole. At this time, the No. 1 sleeve and the No. 2 sleeve are powered off, and the circuit connecting the equipment or device to the power system is disconnected, thereby protecting the equipment or device. At the same time, the connecting rod and the sleeve in the execution module are separated from the No. 2 sleeve and the No. 2 sleeve respectively, which increases the possibility of power failure and helps to improve the power failure safety of the power system.

[0020] 2. In the present invention, when the insert block is disengaging from the connecting hole, the push block drives the piston rod to be inserted into the piston cylinder, and the gas in the piston cylinder accumulates pressure. When the insert block is about to disengage from the connecting hole, the gas pressure exceeds the threshold of the gas pressure relief valve, and the gas is discharged along the gas pipe. The gas is then discharged from the air jet hole and impacts the gap between the connecting hole and the insert block, eliminating the arc shock, reducing the degree of arc burning on the surface of the insert block or the connecting hole, and extending the service life of the monitoring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A first-perspective perspective diagram of the power system monitoring device of the present invention;

[0022] Figure 2 A second perspective perspective diagram of the power system monitoring device of the present invention;

[0023] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0024] Figure 4 This is a front view of the power system monitoring device of the present invention;

[0025] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0026] Figure 6 A three-dimensional diagram of an execution module in the present invention;

[0027] Figure 7 for Figure 6 A partial enlarged view of point C in the middle;

[0028] Figure 8 A three-dimensional diagram of the cooperation between the piston rod and the piston cylinder in the present invention;

[0029] Figure 9 It is a three-dimensional diagram of the screw rod in the present invention.

[0030] In the figure: 1. Box body; 2. Cover body; 3. Window; 4. Motor; 5. Screw; 6. Push block; 7. Sleeve; 8. U-shaped plate; 9. No. 1 sleeve; 10. Connecting rod; 11. Connecting block; 12. Connecting hole; 13. No. 2 sleeve; 14. Guide rod; 15. No. 1 thread; 16. No. 2 thread; 17. Push plate; 18. Insulating plate; 19. Insert block; 20. Piston rod; 21. Piston cylinder; 22. Air pipe; 23. Air jet hole; 24. Slot; 25. Insert plate; 26. Support plate; 27. Limit groove; 28. Anti-slip part; 30. Guide cylinder; 31. Wire pressing screw. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] Reference Figure 1 - Figure 8 A power system monitoring device includes a box 1, in which a power-off protection unit is provided; the power-off protection unit includes a temperature detection module and an execution module; the temperature detection module is installed in a device installed in the power system; the execution module is connected to the temperature detection module via a wireless module, and the execution module includes a plurality of covers 2; windows 3 are provided on the side walls of both sides of the box 1, a cover 2 is installed outside each window 3, and a motor 4 is installed in each cover 2, a screw rod 5 is fixedly connected to the output end of the motor 4, and a push block 6 is symmetrically connected to the screw rod 5, and a sleeve 7 is provided on the opposite end faces of the two push blocks 6 on the same screw rod 5;

[0033] A U-shaped plate 8 is provided below the screw rod 5, and a No. 1 sleeve 9 is fixedly connected to the bottom of the U-shaped plate 8, and an electric wire is fixedly connected to the lower end of the No. 1 sleeve 9; an L-shaped connecting rod 10 is provided at the upper end of each push block 6, and the horizontal ends of the two opposite connecting rods 10 are arranged oppositely, and a connecting block 11 is provided at the horizontal end of each connecting rod 10, and a connecting hole 12 is provided at a position opposite to the horizontal end of the connecting block 11 and the connecting hole 12 is provided. A No. 2 sleeve 13 is fixedly connected to the upper end surface of the connecting block 11, and an electric wire is fixedly connected to the No. 2 sleeve 13;

[0034] A guide rod 14 is slidably connected to the upper half of the push block 6. The end of the guide rod 14 passes through the push block 6 and is fixed to the side wall of the cover body 2 through a nut.

[0035] In this embodiment, a power monitoring device capable of power-off protection is designed. By installing a temperature detection module in a heat-prone part of a device or apparatus, temperature changes are constantly monitored. When the measured temperature exceeds a threshold, the temperature module transmits the temperature data to an execution module via a 4G / 5G wireless module. A control circuit board is also provided within the execution module for analyzing the temperature data and controlling the start and stop, as well as the forward and reverse rotation of the motor 4.

[0036] The ends of the high-voltage wires in the power system are fixedly connected in the No. 1 sleeve 9 and the No. 2 sleeve 13; when the power system monitoring device is operating normally, the horizontal end of the connecting rod 10 is inserted into the connecting hole 12, and the sleeve 7 is placed in the U-shaped plate 8 to realize the electrical connection between the No. 1 sleeve 9 and the No. 2 sleeve 13; when the temperature module measures that the temperature exceeds the threshold, the control circuit board controls the motor 4 to rotate forward, and the motor 4 drives the screw rod 5 to rotate. The screw rod 5 is made of insulating material, and the screw rod 5 drives the push block 6 to move relatively away. The push block 6 drives the rear side of the sleeve 7 away from the U-shaped plate 8, and at the same time, the push block 6 also drives the horizontal end of the connecting rod 10 to disengage from the connecting hole 12. At this time, the No. 1 sleeve 9 and the No. 2 sleeve 13 are powered off, and the circuit connecting the equipment or device to the power system is disconnected, thereby realizing protection of the equipment or device. At the same time, the connecting rod 10 and the sleeve 7 in the execution module are respectively disconnected from the No. 2 sleeve 13 and the No. 2 sleeve 13, thereby increasing the possibility of power failure and helping to improve the power failure safety of the power system.

[0037] Reference Figure 7 The end of each U-shaped plate 8 opposite to the push block 6 is expanded; the outer ring of the sleeve 7 is set in a truncated cone shape; the setting of the shape of the sleeve 7 and the setting of the expanded part on the U-shaped plate 8 enable the outer surface of the sleeve 7 to more effectively contact the inner surface of the U-shaped plate 8 during the movement of the sleeve 7 into the U-shaped plate 8, thereby ensuring the stability of the electrical connection.

[0038] Reference Figure 8 and Figure 9 Each of the screw rods 5 is symmetrically provided with two No. 1 threads 15 and two No. 2 threads 16. The two No. 1 threads 15 are arranged near the end of the screw rod 5, and the No. 1 thread 15 is transmission-connected to the push block 6; the two No. 2 threads 16 are symmetrically arranged near the middle position of the screw rod 5, and the No. 2 thread 16 is provided with an insulating component; the insulating component includes a push plate 17 transmission-connected to the No. 2 thread 16, and an insulating plate 18 fixed to the end face of the push plate 17, the insulating plate 18 is adapted to the shape of the U-shaped plate 8, and the insulating plate 18 is horizontally slidably connected in the U-shaped push plate 17; when the No. 2 thread 16 screw rod 5 rotates, the push block 6 moves in the same direction as the push plate 17 close to it; the push plate 17 is made of insulating material, and when the sleeve 7 moves away from and detaches from the U-shaped plate 8, the push plate 17 drives the insulating plate 18 to move into the U-shaped plate 8, isolating the U-shaped plate 8 from the sleeve 7, thereby further providing power-off safety protection for the power system.

[0039] Reference Figure 5 The connecting hole 12 is set in a truncated cone shape; the horizontal end of the connecting rod 10 is provided with a truncated cone-shaped plug-in block 19; the shape of the connecting hole 12 and the shape of the plug-in block 19 enable the plug-in block 19 to fully electrically contact the connecting hole 12, and also improve the electrical contact stability between the connecting rod 10 and the connecting block 11.

[0040] Reference Figure 1 、 Figure 4 、 Figure 5 and Figure 8 , a piston rod 20 is fixedly connected to the rear side wall of the upper half of each push block 6, and a piston cylinder 21 is fixedly connected to the inner wall of each cover body 2. The piston rod 20 is inserted in the piston cylinder 21, and the bottom of the piston cylinder 21 is connected to the air pipe 22. A gas pressure relief valve is provided on the air pipe 22, and the end of the air pipe 22 is fixedly connected to the connecting block 11; a plurality of air injection holes 23 are provided on the inner wall of the connecting hole 12, and the air injection holes 23 are connected to the air pipe 22; if the monitoring device is used to monitor the high-voltage circuit, when the plug 19 is separated from the connecting hole 12, an arc will appear between the plug 19 and the connecting hole 12, and the high temperature generated by the arc will burn the surface of the plug 19 and the surface of the connecting hole 12 to damage the insulation, aggravating the hazard of short-circuit fault in the power system; for the above In order to solve the above problem, a structure that can extinguish the arc is designed; a one-way valve is provided on the piston cylinder 21 near the push block 6 to restrict the direction of gas flow, so that only external gas can enter the piston cylinder 21 along the one-way valve; in the process of the plug block 19 disengaging from the connecting hole 12, the push block 6 drives the piston rod 20 to insert into the piston cylinder 21, and the gas in the piston cylinder 21 accumulates pressure. When the plug block 19 is about to disengage from the connecting hole 12, the gas pressure is greater than the threshold value of the gas pressure relief valve, and the gas is discharged along the air pipe 22. After that, the gas is discharged from the air jet hole 23 and impacts the gap between the connecting hole 12 and the plug block 19, eliminating the arc impact, reducing the degree of burning of the plug block 19 or the surface of the connecting hole 12 by the arc, and extending the service life of the monitoring device.

[0041] Reference Figure 5 The exhaust direction of each of the jet holes 23 is tilted to point to the small hole end position of the connecting hole 12; the direction of the jet hole 23 is set so that the gas can be as perpendicular to the arc as possible, which can fully impact the arc and eliminate the arc impact.

[0042] Reference Figure 1 and Figure 6The outer ring of each window 3 is provided with a slot 24 inclined downward, and the shape of the slot 24 is the same as the shape of the port of the cover body 2, and each port of the cover body 2 is provided with an insert plate 25 inclined upward, and the insert plate 25 is arranged in an annular manner along the port of the cover body 2, and the insert plate 25 can be inserted into the cover body 2; a support plate 26 is provided on the side walls of the box body 1 on both sides, and one side of the support plate 26 is fixedly connected to the position below the window 3 by a thread, and the horizontal end of the support plate 26 is lifted on the lower surface of the cover body 2; the cover body 2 is inserted into the slot 24 through the insert plate 25, and the support plate 26 provided at the same time supports the cover body 2, which can realize convenient disassembly and installation of the cover body 2 and the box body 1, and the detachable design of the cover body 2 is for convenient maintenance of the motor 4, arc extinguishing structure and other components in the cover body 2; at the same time, the insert slot 24 is arranged obliquely downward to prevent external rainwater from flowing back into the cover body 2 and the box body 1, and the front end of the box body 1 is provided with a door panel, which is not repeated in this embodiment.

[0043] Reference Figure 2 and Figure 3 A limiting groove 27 is provided on the lower surface of each of the cover bodies 2; a strip-shaped anti-slip portion 28 is provided on the upper surface of the horizontal end of each of the support plates 26, and the anti-slip portion 28 is embedded in the limiting groove 27; by providing the anti-slip plate, the support plate 26 supports the cover body 2, and the anti-slip portion 28 is embedded in the limiting groove 27, further improving the stability of the cover body 2 installed in the box body 1.

[0044] Reference Figure 1 and Figure 2 The upper and lower end surfaces of the box body 1 are each provided with a through hole, and a guide cylinder 30 is fixed at each through hole position. The wire passes through the guide cylinder 30 and is inserted into the No. 1 sleeve 9 and the No. 2 sleeve 13; by providing the guide cylinder 30, the wire is passed through the guide cylinder 30, and the part other than the end of the wire is stabilized, thereby reducing the swing between the wire and the No. 1 sleeve 9 and the No. 2 sleeve 13, and reducing the possibility of loosening between the wire and the No. 1 sleeve 9 and the No. 2 sleeve 13.

[0045] Reference Figure 1 and Figure 2 Each guide cylinder 30 is threadedly connected with a wire pressing screw 31; the wire pressing screw 31 squeezes the insulation layer of the wire, which further improves the stability of the wire in the guide cylinder 30.

[0046] Working Principle: In this embodiment, a power monitoring device with power-off protection is designed. By installing a temperature detection module in a heat-prone part of a device or apparatus, temperature changes are constantly monitored. When the measured temperature exceeds a threshold, the temperature module transmits the temperature data to the execution module via a 4G / 5G wireless module. The execution module is also provided with a control circuit board for analyzing the temperature data and controlling the start and stop, as well as the forward and reverse rotation of the motor 4.

[0047] The ends of the high-voltage wires in the power system are fixedly connected in the No. 1 sleeve 9 and the No. 2 sleeve 13; when the power system monitoring device is operating normally, the horizontal end of the connecting rod 10 is inserted into the connecting hole 12, and the sleeve 7 is placed in the U-shaped plate 8 to realize the electrical connection between the No. 1 sleeve 9 and the No. 2 sleeve 13; when the temperature module measures that the temperature exceeds the threshold, the control circuit board controls the motor 4 to rotate forward, and the motor 4 drives the screw rod 5 to rotate. The screw rod 5 is made of insulating material, and the screw rod 5 drives the push block 6 to move relatively away. The push block 6 drives the rear side of the sleeve 7 away from the U-shaped plate 8, and at the same time, the push block 6 also drives the horizontal end of the connecting rod 10 When the end portion is disengaged from the connection hole 12, the No. 1 sleeve 9 and the No. 2 sleeve 13 are de-energized, and the circuit connecting the equipment or device to the power system is disconnected, thereby protecting the equipment or device. At the same time, the connection rod 10 and the sleeve 7 in the execution module are disengaged from the No. 2 sleeve 13 and the No. 2 sleeve 13, respectively, thereby increasing the possibility of power failure and contributing to improving the power failure safety of the power system. The shape of the sleeve 7 and the flared portion on the U-shaped plate 8 enable the outer surface of the sleeve 7 to more effectively contact the inner surface of the U-shaped plate 8 during the movement of the sleeve 7 into the U-shaped plate 8, thereby ensuring the stability of the electrical connection.

[0048] When the No. 2 thread 16 screw rod 5 rotates, the push block 6 moves in the same direction as the push plate 17 close to it; the push plate 17 is made of insulating material, and when the sleeve 7 moves away from and detaches from the U-shaped plate 8, the push plate 17 drives the insulating plate 18 to move into the U-shaped plate 8, isolating the U-shaped plate 8 from the sleeve 7, thereby further providing power-off safety protection for the power system; the shape of the connecting hole 12 and the shape of the plug block 19 enable the plug block 19 to fully electrically contact the connecting hole 12, which also improves the electrical contact stability between the connecting rod 10 and the connecting block 11.

[0049] If the monitoring device is used to monitor a high-voltage circuit, an arc will appear between the plug 19 and the connecting hole 12 when the plug 19 is separated from the connecting hole 12. The high temperature generated by the arc will burn the surface of the plug 19 and the surface of the connecting hole 12, damaging the insulation and aggravating the hazard of a short-circuit fault in the power system. In order to solve the above problem, a structure that can extinguish the arc is designed. A one-way valve is provided on the piston cylinder 21 near the push block 6 to restrict the direction of gas flow so that only external gas can enter the piston cylinder 21 along the one-way valve. When the plug 19 is separated from the connecting hole 12, the push block 6 drives the piston rod 2 0 is inserted into the piston cylinder 21, and the gas in the piston cylinder 21 accumulates pressure. When the plug 19 is about to be separated from the connecting hole 12, the gas pressure exceeds the threshold of the gas pressure relief valve, and the gas is discharged along the gas pipe 22. The gas is then discharged from the air jet hole 23 and impacts the gap between the connecting hole 12 and the plug 19, eliminating the arc shock, reducing the degree of arc burning on the plug 19 or the surface of the connecting hole 12, and extending the service life of the monitoring device; the direction of the air jet hole 23 is set so that the gas can be as perpendicular to the arc as possible, which can fully impact the arc and eliminate the arc shock.

[0050] The cover body 2 is inserted into the slot 24 through the plug plate 25, and the support plate 26 is provided at the same time to support the cover body 2, which can realize convenient disassembly and installation of the cover body 2 and the box body 1, and the detachable design of the cover body 2 is to facilitate the maintenance of the motor 4, arc extinguishing structure and other components in the cover body 2; at the same time, the plug slot 24 is set to be tilted downward to prevent external rainwater from flowing back into the cover body 2 and the box body 1. The front end of the box body 1 is provided with a door panel, which is not repeated in this embodiment; by providing an anti-slip plate, the support plate 26 supports the cover body 2, and the anti-slip part 28 is embedded in the limit groove 27, which further improves the stability of the cover body 2 installed in the box body 1.

[0051] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

[0052] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A power system monitoring device, characterized in that: The invention comprises a box (1), wherein a power-off protection unit is provided in the box (1); the power-off protection unit comprises a temperature detection module and an execution module; the temperature detection module is installed in a device installed in the power system; the execution module is connected to the temperature detection module via a wireless module, and the execution module comprises a plurality of covers (2); windows (3) are provided on the side walls of both sides of the box (1), a cover (2) is installed outside each window (3), a motor (4) is installed in each cover (2), a screw rod (5) is fixedly connected to the output end of the motor (4), a push block (6) is symmetrically connected to the screw rod (5), and sleeves (7) are provided on the opposite end faces of the two push blocks (6) on the same screw rod (5); A U-shaped plate (8) is provided below the screw rod (5), a No. 1 sleeve (9) is fixedly connected below the U-shaped plate (8), and an electric wire is fixedly connected to the lower end of the No. 1 sleeve (9); an L-shaped connecting rod (10) is provided at the upper end of each push block (6), and the horizontal ends of the two opposite connecting rods (10) are arranged opposite to each other, and a connecting block (11) is provided at the horizontal end of each connecting rod (10), and a connecting hole (12) is provided at a position opposite to the horizontal end of the connecting block (11) and the connecting rod (10), and a No. 2 sleeve (13) is fixedly connected to the upper end surface of the connecting block (11), and an electric wire is fixedly connected inside the No. 2 sleeve (13); A guide rod (14) is slidably connected to the upper half of the push block (6), the end of the guide rod (14) passes through the push block (6), and the end of the guide rod (14) is fixed to the side wall of the cover body (2) through a nut; Each of the screw rods (5) is symmetrically provided with two No. 1 threads (15) and two No. 2 threads (16), the two No. 1 threads (15) are arranged close to the end of the screw rod (5), and the No. 1 threads (15) are transmission-connected to the push block (6); the two No. 2 threads (16) are symmetrically arranged close to the middle position of the screw rod (5), and an insulating component is provided on the No. 2 threads (16); the insulating component includes a push plate (17) transmission-connected to the No. 2 threads (16), and an insulating plate (18) fixed to the end face of the push plate (17), the insulating plate (18) is adapted to the shape of the U-shaped plate (8), and the insulating plate (18) is horizontally slidably connected in the U-shaped push plate (17).

2. The power system monitoring device according to claim 1, characterized in that: The end of each U-shaped plate (8) opposite to the push block (6) is expanded; the outer ring of the sleeve (7) is arranged in a truncated cone shape.

3. The power system monitoring device according to claim 1, characterized in that: The connecting hole (12) is arranged in a truncated cone shape; the horizontal end of the connecting rod (10) is provided with a truncated cone-shaped inserting block (19).

4. The power system monitoring device according to claim 2, characterized in that: A piston rod (20) is fixedly connected to the rear side wall of the upper half of each push block (6), a piston cylinder (21) is fixedly connected to the inner wall of each cover body (2), the piston rod (20) is inserted into the piston cylinder (21), the bottom of the piston cylinder (21) is connected to an air pipe (22), a gas pressure relief valve is provided on the air pipe (22), and the end of the air pipe (22) is fixedly connected to the connecting block (11); a plurality of air injection holes (23) are opened on the inner wall of the connecting hole (12), and the air injection holes (23) are connected to the air pipe (22).

5. The power system monitoring device according to claim 4, characterized in that: The exhaust direction of each of the air jet holes (23) is tilted toward the small hole end position of the connecting hole (12).

6. The power system monitoring device according to claim 1, characterized in that: The outer ring of each window (3) is provided with a slot (24) tilted downward, the shape of the slot (24) is the same as the shape of the port of the cover body (2), and the port of each cover body (2) is provided with an insert plate (25) tilted upward, the insert plate (25) is arranged in a ring along the port of the cover body (2), and the insert plate (25) can be inserted into the cover body (2); the side walls of the box body (1) are provided with a supporting plate (26), one side of the supporting plate (26) is fixed to the position below the window (3) by a thread, and the horizontal end of the supporting plate (26) is supported on the lower surface of the cover body (2).

7. The power system monitoring device according to claim 6, characterized in that: A limiting groove (27) is provided on the lower surface of each cover body (2); a strip-shaped anti-slip portion (28) is provided on the upper surface of the horizontal end of each support plate (26), and the anti-slip portion (28) is embedded in the limiting groove (27).

8. The power system monitoring device according to claim 1, characterized in that: The upper end surface and the lower end surface of the box body (1) are respectively provided with through holes, and a guide cylinder (30) is fixedly connected to each through hole. The electric wire passes through the guide cylinder (30) and is inserted into the No. 1 sleeve (9) and the No. 2 sleeve (13).

9. The power system monitoring device according to claim 8, characterized in that: A wire pressing screw (31) is threadedly connected on each guide cylinder (30).

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