On-line partial discharge fault positioning and diagnosing device for cable joint

Abstract

The invention relates to the technical field of cable operation maintenance, and discloses a cable joint on-line partial discharge fault positioning and diagnosis device, which comprises a shell, a positive and negative screw rod is rotatably connected in the shell, the outer end of the positive and negative screw rod is fixedly connected with a rotating column, and the outer wall of the positive and negative screw rod is in threaded connection with a threaded block. Limiting blocks are rotatably arranged on the two sides of the outer wall of the threaded block, the outer walls of the limiting blocks are slidably connected with a rotating support, a fixing column is rotatably connected to the interior of the rotating support, a pushing column is rotatably connected to the outer wall of the fixing column, and a positioning semi-ring is fixedly connected to the outer end of the pushing column; the outer wall of the pushing column is slidably connected with a first support. The positive and negative screw rods drive the positioning semi-rings on the two sides to oppositely move in a centering manner, so that a cable joint can be stably clamped, and the joint is prevented from being impacted by external force to damage the outer layer; meanwhile, the positioning semi-ring synchronously drives the sensor to be attached to the connector when moving, monitoring is conducted while the connector is protected, and the service life of the connector is effectively prolonged.

Description

Technical Field

[0001] This invention relates to the field of cable operation and maintenance technology, specifically to an online partial discharge fault location and diagnosis device for cable joints. Background Technology

[0002] Cables are the core carriers for power transmission and distribution in power systems. With their excellent insulation performance and flexible installation, they are widely used in all aspects of power transmission and distribution networks, serving as a critical infrastructure for ensuring continuous power supply. In long-distance transmission or complex power grid layouts, the length of a single cable segment often cannot meet practical needs. Therefore, cable joints are required to connect multiple cable segments to achieve continuous power transmission. Cable joints must complete the conductive connection of the conductors of two cable segments, the sealed transition of the insulation layers, and the effective connection of the shielding layers, making them an indispensable connecting component in cable lines. However, the structural complexity and installation process dependence of cable joints make them a weak link in the entire cable line. During operation, partial discharge faults can easily occur due to insulation defects, mechanical stress, or environmental corrosion. If not detected in time, these faults may lead to insulation breakdown, line tripping, or even fire accidents. Therefore, targeted partial discharge fault monitoring of cable joints is crucial.

[0003] Currently, for cable joint partial discharge fault location and diagnosis devices on the market, maintenance personnel need to first use independent clamps to hold and fix the cable joint, and then manually adjust the position of the partial discharge sensor to make it fit the joint surface. However, the joint is at risk of outer layer damage under outdoor wind, vibration and other external forces, making it difficult to effectively protect the cable joint. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an online partial discharge fault location and diagnosis device for cable joints, which solves the problem of the risk of outer layer damage under external force, making it difficult to effectively protect cable joints.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an online partial discharge fault location and diagnosis device for cable joints, comprising a housing, a positive and negative lead screw rotatably connected inside the housing, a rotating column fixedly connected to the outer end of the positive and negative lead screw, a threaded block threadedly connected to the outer wall of the positive and negative lead screw, limit blocks rotatably provided on both sides of the outer wall of the threaded block, a rotating bracket slidably connected to the outer wall of the limit block, a fixed column rotatably connected inside the rotating bracket, a pushing column rotatably connected to the outer wall of the fixed column, a positioning half-ring fixedly connected to the outer end of the pushing column, a bracket one slidably connected to the outer wall of the pushing column, a bracket two slidably connected to the outer wall of the pushing column, a locking component provided on the outer wall of the positioning half-ring, a top cover attached to the upper surface of the housing, side plates fixedly connected to both sides of the lower surface of the top cover, and a diagnostic component fixedly provided on the outer wall of the positioning half-ring.

[0006] Preferably, the diagnostic component includes a bracket three, the outer wall of which is fixedly mounted on the outer wall of the positioning semi-ring, and a sensor is detachably connected to the outer wall of the positioning semi-ring for diagnosing the connection between the two cables.

[0007] Preferably, the outer wall of the rotating column is rotatably connected to the outer wall of the outer shell, and the lower surface of the threaded block is slidably connected to the inner wall of the outer shell.

[0008] Preferably, both bracket one and bracket two are fixedly mounted on the inner wall of the outer shell, and the rotating bracket is located between bracket one and bracket two.

[0009] Preferably, the locking assembly includes a column, the outer wall of which is disposed on the outer wall of the positioning semi-ring, a rotating wheel is rotatably connected to the outer wall of the column, an inclined block is attached to the outer wall of the rotating wheel, a pin is fixedly connected to the outer wall of the inclined block, a vertical plate is slidably connected to the outer wall of the pin, and a spring is fixedly connected to the outer wall of the vertical plate.

[0010] Preferably, the outer wall of the upright plate is fixedly connected to the inner wall of the outer shell, and the outer wall of the spring is fixedly connected to the outer wall of the inclined block.

[0011] Preferably, a handle is fixedly connected to the center of the upper surface of the cover, solar panels are fixedly installed on both sides of the upper surface of the cover, an integrated battery system is installed inside the cover, positioning pins are fixedly installed at the four corners of the lower surface of the cover, limit rods are fixedly connected to both sides of the outer wall of the side plate, an alarm component is installed inside the cover, and positioning holes are opened inside the side plate.

[0012] Preferably, the outer wall of the positioning pin is slidably connected to the inner wall of the housing, and the outer wall of the limiting rod is slidably connected to the inside of the housing.

[0013] Preferably, the alarm component includes an electric push rod, the outer wall of which is fixedly disposed inside the upper cover, a crossbar is fixedly disposed at the output end of the electric push rod, connecting plates are fixedly connected to both outer walls of the crossbar, a positioning bracket is rotatably connected inside the connecting plate, a frame is rotatably connected to the outer wall of the positioning bracket, and a warning light is disposed inside the frame.

[0014] Preferably, the warning light and the electric push rod are both electrically connected to the integrated battery system, and the outer wall of the positioning bracket is slidably connected to the inner wall of the upper cover.

[0015] Working principle: When using the device, first remove the top cover and side plate from the inside of the housing, and place the cable connector in the middle of the diagnostic component; manually rotate the rotating column to drive the positive and negative screws to rotate. The housing, bracket one and bracket two support and limit the positive and negative screws to prevent them from shifting during rotation. At the same time, the housing restricts the threaded block to convert the rotational force into linear movement. The threaded block drives the limit block to move. The limit block moves inside the rotating bracket and drives the rotating bracket to rotate around the fixed column, thereby pushing the column to move. Finally, it pushes the positioning half ring to move towards each other to center, completing the clamping of the cable connector. At the same time, the positioning half ring synchronously drives the diagnostic component to fit against the cable connector.

[0016] When the cable connectors at both ends are located in the middle of the diagnostic component and before clamping begins, lift the top cover by the handle. With the guidance of the positioning pin and the limiting rod, the top cover and side plate are put back on the top of the outer shell, so that the top cover fits against the upper surface of the outer shell and the side plate seals the two sides of the outer shell. When the positioning half ring moves, it simultaneously drives the column and wheel of the locking component to move. The wheel touches the inclined surface of the inclined block and pushes the inclined block to move, which drives the pin to slide along the upright plate and compress the spring. The pin penetrates into the positioning hole of the side plate to complete the fixation, and the rubber gaskets at each gap further seal, forming a fully sealed structure.

[0017] During operation, the solar panels convert solar energy into electrical energy and store it in the integrated battery system. The integrated battery system powers the diagnostic components for online monitoring, while the 5G module within the integrated battery system transmits the sensor's monitoring data. When the sensor detects abnormal data, the integrated battery system powers the electric push rod, which moves the crossbar, causing the connecting plate to move the positioning bracket. Through linkage, the frame causes the warning light to extend from the top cover, emitting a red light to provide a fault warning and facilitate quick location by maintenance personnel.

[0018] This invention provides an online partial discharge fault location and diagnosis device for cable joints. It has the following beneficial effects:

[0019] 1. This invention uses positive and negative lead screws to drive the two positioning half rings on both sides to move towards each other and center, which can form a stable clamp on the cable joint and prevent the outer layer of the joint from being damaged by external force impact; at the same time, when the positioning half rings move, they simultaneously drive the sensor to fit into the joint, which protects the joint while monitoring it, effectively extending the service life of the joint.

[0020] 2. After the top cover and side plate of the present invention are closed, the positioning pin and the limiting rod guide the positioning, and the pin fixes the side plate to form a sealed structure. The rubber gaskets at each gap can block rainwater erosion, prevent the cable joint and the internal structure of the device from being damaged by moisture, and improve the applicability of the device in the outdoor environment.

[0021] 3. The bracket of the diagnostic component of the present invention is fixed to the positioning half ring. It moves and synchronously approaches the cable connector. The curved surface of the sensor is consistent with the positioning half ring and fits completely with the connector, ensuring accurate capture of partial discharge signals, guaranteeing the accuracy of fault diagnosis, and realizing online monitoring.

[0022] 4. When the positioning semi-ring moves, the rotating wheel of the locking component will drive the inclined block, so that the pin will automatically insert into the positioning hole of the side plate. The top cover can be fixed without additional operation, and the cable clamp and device sealing are integrated into one step, which greatly simplifies the operation process and improves the efficiency of installation and maintenance.

[0023] 5. The solar panel of this invention converts solar energy into electrical energy and stores it in an integrated battery system to continuously power sensors, electric actuators, etc., enabling continuous online monitoring. When the sensor detects an anomaly, the warning light automatically extends to sound an alarm and transmits data through the 5G module, making it easier for maintenance personnel to quickly locate the fault and reducing the difficulty of operation and maintenance. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a partial structural diagram of the solar panel of the present invention;

[0026] Figure 3 This is a schematic diagram of a partial structure of the side plate of the present invention;

[0027] Figure 4 This is a partial structural diagram of the rotating column of the present invention;

[0028] Figure 5 This is a schematic diagram of a partial structure of the positioning semi-ring of the present invention;

[0029] Figure 6 This is a partial structural diagram of the support bracket of the present invention;

[0030] Figure 7 This is a schematic diagram of a partial structure of the spring of the present invention;

[0031] Figure 8 This is a partial structural diagram of the upper cover of the present invention;

[0032] Figure 9 This is a schematic diagram of a partial structure of the handle of the present invention;

[0033] Figure 10 This is a schematic diagram of a partial structure of the connecting plate of the present invention.

[0034] The components include: 1. Outer shell; 2. Lead screws (both forward and reverse); 3. Rotating column; 4. Threaded block; 5. Limiting block; 6. Rotating bracket; 7. Pushing column; 8. Positioning semi-ring; 9. Bracket 1; 10. Bracket 2; 11. Fixed column; 12. Bracket 3; 13. Sensor; 14. Locking assembly; 1401. Column; 1402. Rotating wheel; 1403. Inclined block; 1404. Pin; 1405. Vertical plate; 1406. Spring; 15. Top cover; 16. Handle; 17. Positioning pin; 18. Solar panel; 19. Integrated battery system; 20. Side plate; 21. Limiting rod; 22. Positioning hole; 23. Alarm assembly; 2301. Electric push rod; 2302. Crossbar; 2303. Positioning bracket; 2304. Connecting plate; 2305. Frame; 2306. Warning light. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see the appendix Figure 1 -Appendix Figure 7 This invention provides an online partial discharge fault location and diagnosis device for cable joints, including a housing 1. A positive and negative lead screw 2 is rotatably connected inside the housing 1. A rotating column 3 is fixedly connected to the outer end of the positive and negative lead screw 2. A threaded block 4 is threadedly connected to the outer wall of the positive and negative lead screw. Limiting blocks 5 are rotatably provided on both sides of the outer wall of the threaded block 4. A rotating bracket 6 is slidably connected to the outer wall of the limiting block 5. A fixed column 11 is rotatably connected inside the rotating bracket 6. A pushing column 7 is rotatably connected to the outer wall of the fixed column 11. A positioning half ring 8 is fixedly connected to the outer end of the pushing column 7. A bracket 9 is slidably connected to the outer wall of the pushing column 7. A bracket 10 is slidably connected to the outer wall of the pushing column 7. A locking component 14 is provided on the outer wall of the positioning half ring 8. A top cover 15 is attached to the upper surface of the housing 1. Side plates 20 are fixedly connected to both sides of the lower surface of the top cover 15. A diagnostic component is fixedly provided on the outer wall of the positioning half ring 8.

[0037] Specifically, when the device is needed, first, remove the top cover 15 and side plate 20 from the inside of the outer casing 1, and place the connection points of the two cables in the middle of the diagnostic component. Then, manually rotate the rotating column 3 to drive the positive and negative lead screws 2 to rotate. The outer casing 1, bracket 9, and bracket 10 all support and restrict the positive and negative lead screws 2 to prevent displacement during rotation. The restriction of the outer casing 1 causes the threaded block 4 to move, thereby driving the limiting block 5 to move. Simultaneously, the limiting block 5 moves inside the rotating bracket 6, and the rotating bracket 6 is restricted by the fixed column 11, causing the limiting block 5 to drive the axis of the rotating bracket 6 and fixed column 11 to rotate, thus pushing the column 7 to move. At this time, the outer casing 1, bracket 9, and bracket 10 all support and restrict the pushing column 7. This prevents the push column 7 from deflecting when pushed, and then pushes the positioning half ring 8 horizontally to move. Due to the reverse threads at both ends of the positive and negative screw 2, the positioning half rings 8 on both sides move towards each other and center, so that the positioning half rings 8 on both sides clamp and fix the cables at both ends. This achieves the effect of preventing the outer layer of the two cable joints from being damaged by external forces and enhancing the service life of the joint. At the same time as the positioning half ring 8 moves, it simultaneously drives the diagnostic component to fit against the interface of the two cable sections. The diagnostic component determines whether there is any abnormality at the interface. When it is placed in the middle position of the two cables, the top cover 15 and the side plate 20 are put back on the top of the outer shell 1, forming a fully sealed structure. This prevents the cable joints at both ends and the internal structure from being corroded by rainwater, further improving the overall service life.

[0038] Please see the appendix Figure 4 and attached Figure 5 The diagnostic component includes a bracket 12, the outer wall of which is fixedly mounted on the outer wall of the positioning half-ring 8. A sensor 13 is detachably connected to the outer wall of the positioning half-ring 8. The sensor 13 is used to diagnose the connection between the two cables.

[0039] Specifically, when the positioning half-ring 8 moves, it will synchronously drive the bracket 12 to move. The surface of the sensor 13 is the same as that of the positioning half-ring 8, which can completely fit with the connection of the cable. The sensor 13 can diagnose whether there is a problem at the connection.

[0040] Please see the appendix Figure 3 -Appendix Figure 5 The outer wall of the rotating column 3 is rotatably connected to the outer wall of the outer shell 1, and the lower surface of the threaded block 4 is slidably connected to the inner wall of the outer shell 1.

[0041] Specifically, when the rotating column 3 rotates, it drives the positive and negative lead screws 2 to rotate. The outer shell 1 restricts the position of the positive and negative lead screws 2 from changing when the threaded block 4 moves. At the same time, when the threaded block 4 moves, the outer shell 1 restricts the rotation of the threaded block 4, converting the force of rotation into linear motion, which in turn drives the rotating bracket 6 to flip horizontally.

[0042] Please see the appendix Figure 3 -Appendix Figure 5 Both bracket 1 9 and bracket 2 10 are fixedly installed on the inner wall of the outer shell 1, and the rotating bracket 6 is located between bracket 1 9 and bracket 2 10.

[0043] Specifically, the outer casing 1 fixes the first bracket 9 and the second bracket 10 so that the first bracket 9 and the second bracket 10 can ensure the position and direction of the push column 7 and the positive and negative screw 2. The rotating bracket 6 is set in the middle position between the first bracket 9 and the second bracket 10, so that the rotation arc of the rotating bracket 6 is restricted, further restricting the distance of movement of the threaded block 4 and preventing the threaded block 4 from disengaging from the thread of the positive and negative screw 2.

[0044] Please see the appendix Figure 3 Appendix Figure 4 and attached Figure 7 The locking assembly 14 includes a column 1401, the outer wall of the column 1401 is set on the outer wall of the positioning semi-ring 8, the outer wall of the column 1401 is rotatably connected to a wheel 1402, the outer wall of the wheel 1402 is attached to an inclined block 1403, the outer wall of the inclined block 1403 is fixedly connected to a pin 1404, the outer wall of the pin 1404 is slidably connected to a plate 1405, and the outer wall of the plate 1405 is fixedly connected to a spring 1406.

[0045] Specifically, when the positioning semi-ring 8 moves, it synchronously drives the column 1401 to move, which in turn drives the rotating wheel 1402 to move. When the rotating wheel 1402 touches the outer wall of the inclined block 1403, and because the inclined block 1403 is provided with an inclined surface, the rotating wheel 1402 moves along the inclined surface of the inclined block 1403. The rotating wheel 1402 is restricted by the positioning semi-ring 8, which causes the rotating wheel 1402 to move the inclined block 1403, thereby driving the pin 1404 to move and compressing the spring 1406, so that the pin 1404 extends into the interior of the side plate 20 to fix the side plate 20. The upright plate 1405 ensures that the direction of the pin 1404 is constant when it moves and will not deviate, thereby achieving the effect of realizing the one-step operation of sealing and installation and improving the overall work efficiency.

[0046] Please see the appendix Figure 3 Appendix Figure 4 and attached Figure 7The outer wall of the upright plate 1405 is fixedly connected to the inner wall of the outer shell 1, and the outer wall of the spring 1406 is fixedly connected to the outer wall of the inclined block 1403.

[0047] Specifically, the outer casing 1 first fixes and supports the upright plate 1405 to ensure that its position does not change when subjected to the deformation force of the spring 1406, and continues to support the pin 1404. Furthermore, through the fixed connection between the spring 1406 and the inclined block 1403, the pin 1404 can be pushed to move when the spring 1406 rebounds, without causing the spring 1406 to shift position.

[0048] Please see the appendix Figure 2 , Figure 8 and Figure 9 A handle 16 is fixedly connected to the middle of the upper surface of the top cover 15. Solar panels 18 are fixedly installed on both sides of the upper surface of the top cover 15. An integrated battery system 19 is installed inside the top cover 15. Positioning pins 17 are fixedly installed at the four corners of the lower surface of the top cover 15. Limiting rods 21 are fixedly connected to both sides of the outer wall of the side plate 20. An alarm component 23 is installed inside the top cover 15. Positioning holes 22 are opened inside the side plate 20.

[0049] Specifically, when the connection point of the two cables is located in the middle of the diagnostic component, the top cover 15 is lifted by the handle 16, and guided by the limiting rod 21, the side plate 20 and the outer shell 1 form a sealed structure. The top cover 15 fits against the upper surface of the outer shell 1, achieving a fully sealed structure. The positioning pin 17 further ensures that the connection position between the top cover 15 and the outer shell 1 does not change, thus allowing the top cover 15 to cover the top of the outer shell 1. The side plate 20 completely blocks both sides, and the pin 1404 extends into the positioning hole 22 to fix the side plate 20, further fixing the top cover 15. Rubber gaskets are provided at each gap to further prevent rainwater erosion. The solar panel 18 converts solar energy into electrical energy and stores it inside the integrated battery system 19, which powers the diagnostic component to achieve continuous online monitoring. The integrated battery system 19 also integrates a limiting block 5G module for transmitting data monitored by the sensor 13.

[0050] Please see the appendix Figure 2 Appendix Figure 8 and attached Figure 9 The outer wall of the positioning pin 17 is slidably connected to the inner wall of the outer shell 1, and the outer wall of the limiting rod 21 is slidably connected to the inside of the outer shell 1.

[0051] Specifically, when the top cover 15 and the outer shell 1 are docked, the positioning pin 17 will first play a guiding role, further ensuring that the top cover 15 and the outer shell 1 can fit completely without any positional deviation. In addition, the limiting rod 21 can be used in conjunction with the positioning pin 17 to ensure that the side plate 20 can completely seal the outer shell 1.

[0052] Please see the appendix Figure 3 Appendix Figure 9 and attached Figure 10 The alarm component 23 includes an electric push rod 2301. The outer wall of the electric push rod 2301 is fixedly installed inside the upper cover 15. A crossbar 2302 is fixedly installed at the output end of the electric push rod 2301. Connecting plates 2304 are fixedly connected to both outer walls of the crossbar 2302. A positioning bracket 2303 is rotatably connected inside the connecting plate 2304. A frame 2305 is rotatably connected to the outer wall of the positioning bracket 2303. An alarm light 2306 is installed inside the frame 2305.

[0053] Specifically, when sensor 13 detects abnormal data, it sends a signal through the 5G module of the limit block, and at the same time, the integrated battery system 19 supplies power to the electric push rod 2301. The electric push rod 2301 starts to push the crossbar 2302 to move, which in turn drives the connecting plate 2304 to move. The upper cover 15 restricts the direction of movement of the connecting plate 2304 to ensure that the direction of movement of the connecting plate 2304 is constant, thereby driving the positioning bracket 2303 to move. After moving a certain distance, the force of linear motion is converted into a vertical force, which pushes the frame 2305 to move upward, causing the warning light 2306 to extend out of the upper cover 15. At this time, the warning light 2306 emits red light, which facilitates the inspection personnel to find the problem.

[0054] Please see the appendix Figure 3 Appendix Figure 9 and attached Figure 10 The warning light 2306 and the electric push rod 2301 are both electrically connected to the integrated battery system 19, and the outer wall of the positioning bracket 2303 is slidably connected to the inner wall of the upper cover 15.

[0055] Specifically, the integrated battery system 19 converts electrical energy to power the warning light 2306, the electric push rod 2301, and the sensor 13, ensuring that the sensor 13 can continuously monitor and further reduce the occurrence of accidents. Furthermore, while the frame 2305 moves, the positioning bracket 2303 is restricted by the top cover 15, which restricts the frame 2305 to move only upwards.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable joint online partial discharge fault location and diagnosis device, comprising a housing (1), characterized in that, The inner surface of the outer shell (1) is rotatably connected to a positive and negative lead screw (2). The outer end of the positive and negative lead screw (2) is fixedly connected to a rotating column (3). The outer wall of the positive and negative lead screw (2) is threadedly connected to a threaded block (4). Limit blocks (5) are rotatably provided on both sides of the outer wall of the threaded block (4). A rotating bracket (6) is slidably connected to the outer wall of the limit block (5). A fixed column (11) is rotatably connected inside the rotating bracket (6). A push column (7) is rotatably connected to the outer wall of the fixed column (11). A positioning half ring (8) is fixedly connected to the outer end of the push column (7). A bracket one (9) is slidably connected to the outer wall of the push column (7). A bracket two (10) is slidably connected to the outer wall of the push column (7). A locking component (14) is provided on the outer wall of the positioning half ring (8). A top cover (15) is attached to the upper surface of the outer shell (1). Side plates (20) are fixedly connected to both sides of the lower surface of the top cover (15). A diagnostic component is fixedly provided on the outer wall of the positioning half ring (8).

2. The online partial discharge fault location and diagnosis device for cable joints according to claim 1, characterized in that, The diagnostic component includes a bracket three (12), the outer wall of which is fixedly mounted on the outer wall of a positioning half-ring (8), and a sensor (13) is detachably connected to the outer wall of the positioning half-ring (8). The sensor (13) is used to diagnose the connection between the two cables.

3. The online partial discharge fault location and diagnosis device for cable joints according to claim 1, characterized in that, The outer wall of the rotating column (3) is rotatably connected to the outer wall of the outer shell (1), and the lower surface of the threaded block (4) is slidably connected to the inner wall of the outer shell (1).

4. The online partial discharge fault location and diagnosis device for cable joints according to claim 1, characterized in that, Both bracket one (9) and bracket two (10) are fixedly installed on the inner wall of the outer shell (1), and the rotating bracket (6) is located between bracket one (9) and bracket two (10).

5. The online partial discharge fault location and diagnosis device for cable joints according to claim 1, characterized in that, The locking assembly (14) includes a column (1401), the outer wall of which is disposed on the outer wall of the positioning semi-ring (8), a rotating wheel (1402) is rotatably connected to the outer wall of the column (1401), an inclined block (1403) is attached to the outer wall of the rotating wheel (1402), a pin (1404) is fixedly connected to the outer wall of the inclined block (1403), a vertical plate (1405) is slidably connected to the outer wall of the pin (1404), and a spring (1406) is fixedly connected to the outer wall of the vertical plate (1405).

6. The online partial discharge fault location and diagnosis device for cable joints according to claim 5, characterized in that, The outer wall of the upright plate (1405) is fixedly connected to the inner wall of the outer shell (1), and the outer wall of the spring (1406) is fixedly connected to the outer wall of the inclined block (1403).

7. The online partial discharge fault location and diagnosis device for cable joints according to claim 1, characterized in that, A handle (16) is fixedly connected to the middle of the upper surface of the top cover (15). Solar panels (18) are fixedly installed on both sides of the upper surface of the top cover (15). An integrated battery system (19) is installed inside the top cover (15). Positioning pins (17) are fixedly installed at the four corners of the lower surface of the top cover (15). Limiting rods (21) are fixedly connected to both sides of the outer wall of the side plate (20). An alarm component (23) is installed inside the top cover (15). A positioning hole (22) is opened inside the side plate (20).

8. The online partial discharge fault location and diagnosis device for cable joints according to claim 7, characterized in that, The outer wall of the positioning pin (17) is slidably connected to the inner wall of the outer shell (1), and the outer wall of the limiting rod (21) is slidably connected to the inside of the outer shell (1).

9. The online partial discharge fault location and diagnosis device for cable joints according to claim 7, characterized in that, The alarm component (23) includes an electric push rod (2301). The outer wall of the electric push rod (2301) is fixedly installed inside the upper cover (15). A crossbar (2302) is fixedly installed at the output end of the electric push rod (2301). Connecting plates (2304) are fixedly connected to the outer walls on both sides of the crossbar (2302). A positioning bracket (2303) is rotatably connected inside the connecting plate (2304). A frame (2305) is rotatably connected to the outer wall of the positioning bracket (2303). A warning light (2306) is installed inside the frame (2305).

10. The online partial discharge fault location and diagnosis device for cable joints according to claim 9, characterized in that, The warning light (2306) and the electric push rod (2301) are both electrically connected to the integrated battery system (19), and the outer wall of the positioning bracket (2303) is slidably connected to the inner wall of the cover (15).

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