A high-precision long-duration occasional partial discharge diagnosis and positioning device

Abstract

The present invention discloses a high-precision, long-duration, occasional partial discharge diagnostic and positioning device, which relates to the technical field of high-altitude cable detection devices, including a housing that can move on the cable, and also includes: an ultrasonic detector, which is installed on the housing; a vibration mechanism, which includes a buffer assembly, the input end of the buffer assembly is located outside the housing, and the output end is located inside the housing and is connected to a piston cylinder. The present invention, by providing a vibration mechanism, converts external wind force into a driving force for pushing hydraulic oil through the buffer assembly, and ultimately causes the knocking block to form a knocking vibration on the cable, and during the knocking process, the shock-absorbing plate contacts the surface of the cable, changing the vibration frequency of the cable when it is vibrated by the knocking block, thereby causing the cable to change the vibration frequency of ice attached to the surface through the change in vibration frequency, further causing the ice to break and fall, thereby improving the effect of removing ice from the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of aerial cable detection devices, and in particular to a high-precision long-duration occasional partial discharge diagnosis and positioning device. Background Art

[0002] Cables are essential for controlling installations, connecting devices, and transmitting electricity. High-altitude cables require greater stability than ordinary cables, as they operate at height. When problems arise with high-altitude cables, a detection device is often required. High-altitude cables in plateau areas are subject to greater wind forces at higher altitudes, which can cause the detection device to shake, affecting detection effectiveness.

[0003] In the existing technology, a buffer mechanism is used to buffer the wind. When the wind drives the device to move, an induced current is generated, and the magnetic field generated by the induced current will weaken the movement speed of the buffer mechanism. The kinetic energy of the device caused by the wind will be unloaded by the magnetic force and the buffer force. In this method, there is a lack of de-icing operations for high-altitude cables that will freeze in plateau areas in winter, and the rapid multi-frequency de-icing operations of frozen cables cannot be automatically completed. The cable surface is easily frozen, which affects the detection effect, reducing the high-precision long-term occasional partial discharge diagnosis and positioning capabilities of high-altitude cables. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art of lack of de-icing operation for high-altitude cables that will freeze in plateau areas in winter, inability to automatically complete rapid multi-frequency de-icing operation for frozen cables, and easy ice formation on the cable surface affecting the detection effect, and propose a high-precision long-term occasional partial discharge diagnostic and positioning device.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: a high-precision long-duration occasional partial discharge diagnosis and positioning device, comprising a housing movable on a cable, and further comprising:

[0006] an ultrasonic detector, wherein the ultrasonic detector is mounted on the housing;

[0007] A vibration mechanism, which includes a buffer assembly, wherein the input end of the buffer assembly is located on the outside of the outer shell, and the output end is located on the inside of the outer shell and is connected to a piston cylinder, the piston cylinder is fixedly connected to the outer shell, and one end is penetrated by a piston column in a sealing sliding connection, the piston cylinder is connected to a knocking assembly, the friction between the piston column and the piston cylinder is greater than the friction of the internal structure of the knocking assembly, the piston column extending out of the piston cylinder is fixedly connected to a shock-absorbing plate, and the output end of the knocking assembly and the shock-absorbing plate are both spaced apart with the cable.

[0008] In the above-mentioned high-precision long-duration occasional partial discharge diagnostic positioning device, a moving mechanism is connected inside the shell, and the moving mechanism includes a controller. The controller is installed on the top of the shell, and the top of the shell is rotatably connected to a support roller, and the bottom of the shell is rotatably connected to a drive roller. The output end of the controller is coaxially fixedly connected to one end of the drive roller, and is used to control the drive roller to rotate, and the opposite sides of the support roller and the drive roller are pressed against the cable.

[0009] In the above-mentioned high-precision long-duration occasional partial discharge diagnosis and positioning device, the ultrasonic detectors include two, which are mounted on both sides of the housing in a one-to-one correspondence. The ultrasonic detectors are used to detect and locate the cable.

[0010] In the above-mentioned high-precision, long-duration, occasional partial discharge diagnostic positioning device, the buffer assembly includes two, the buffer assembly includes buffer plates, the two buffer plates are distributed one-to-one on the two outer sides of the shell, and the opposite sides are fixedly connected to the hydraulic plate through buffer columns, the two outer side walls of the shell are fixedly connected to the buffer cylinders, the two hydraulic plates are sealed and slidably connected one-to-one in the two buffer cylinders, the buffer cylinder is connected to a fixed tube on the side away from the hydraulic plate, and the fixed tube is connected to the piston cylinder at one end away from the buffer cylinder; the knocking assembly includes a connecting tube, the top of the piston cylinder is connected to the middle of the connecting tube through a branch tube, and both ends of the connecting tube are connected to fixed cylinders, the fixed cylinder is fixedly connected to the inner wall of the shell, and is sealed and slidably connected to an extrusion plate inside, a spring is fixedly connected between the extrusion plate and the inner wall of the fixed cylinder, the extrusion plate is fixedly connected to a knocking block at one end away from the connecting tube through a connecting column that seals and penetrates the fixed cylinder, and four knocking blocks extend out of one end of the fixed cylinder and are spaced apart from the outside of the cable.

[0011] In the above-mentioned high-precision long-duration occasional partial discharge diagnosis and positioning device, the interconnected portions of the buffer cylinder, the piston cylinder and the fixed cylinder are all filled with hydraulic oil.

[0012] In the above-mentioned high-precision long-duration occasional partial discharge diagnosis and positioning device, the two buffer cylinders are connected to each other at the sides away from the buffer plate by a common connecting pipe, and the shell is provided with slots for the branch pipe and the connecting pipe to pass through.

[0013] In the above-mentioned high-precision long-duration occasional partial discharge diagnostic positioning device, the four knocking blocks are distributed in a circular array at intervals on the outer periphery of the cable, wherein the branch pipe, connecting pipe and fixing tube are all distributed in a centrally symmetrical manner around the cable axis.

[0014] In the above-mentioned high-precision long-term occasional partial discharge diagnostic positioning device, it also includes a windshield mechanism, the windshield mechanism includes a mounting block, the two mounting blocks are fixedly connected to the top and bottom of the shell in a one-to-one correspondence, an inner cavity is opened in the mounting block, and movable plates are sealed and slidably connected at both ends of the inner cavity, and the end of the movable plate away from the inner cavity is fixedly connected to the windshield block, the end of the windshield block away from the movable plate is sealed and penetrates the mounting block, and is fixedly connected to the windshield plate, and the two opposite sides of the inner cavity are connected to airbags, and the airbags are located between the mounting block and the cable.

[0015] In the above-mentioned high-precision long-duration occasional partial discharge diagnosis and positioning device, the airbags include a plurality of airbags, and the plurality of airbags are evenly spaced and distributed on the mounting block.

[0016] In the above-mentioned high-precision long-duration occasional partial discharge diagnosis and positioning device, a plurality of recoverable dampers are installed between the wind shield and the mounting block.

[0017] Compared with the existing technology, the advantages of the present invention are:

[0018] 1. The present invention provides a vibration mechanism and converts external wind force into a driving force for pushing the hydraulic oil through a buffer component. Since the friction between the outer wall of the piston column and the inner wall of the piston cylinder is large, the hydraulic oil entering the piston cylinder will enter the two fixed cylinders through the branch pipe and the connecting pipe, thereby overcoming the elastic force of the spring to push the knocking block to move, so that the knocking block forms a knocking vibration on the cable. When the knocking block contacts the surface of the cable, part of the hydraulic oil inside the fixed cylinder flows back into the piston cylinder, squeezing the piston column inside the piston cylinder again until the piston column gradually drives the shock absorber plate to contact the surface of the cable, which can change the vibration frequency of the cable when it is vibrated by the knocking block, and then the cable changes the vibration frequency of ice attached to the surface through the change of vibration frequency, further causing the ice to break and fall, thereby improving the effect of removing ice from the cable.

[0019] 2. The present invention connects the two buffer cylinders by setting a connecting pipe, so that when one of the two groups of buffer plates is affected by wind, the hydraulic oil in one group of buffer cylinders will be transported to the other group of buffer cylinders through the connecting pipe, and finally all four groups of knocking blocks will knock on the cable, thereby causing the ice on the cable surface to break and fall, avoiding large areas of ice adhering to the cable surface and affecting the detection results.

[0020] 3. The present invention sets a wind shield mechanism. When the wind speed passing through the shell is high, the wind shield is impacted by the wind, and the space in the inner cavity of the mounting block is squeezed by the movable plate, so that the air in the inner cavity enters the airbag. The airbag expands after inflation, thereby reducing the flow diameter in the shell, reducing the passage of wind, and reducing the flow rate of wind through the inside of the shell, effectively avoiding the temperature drop of the residual condensed beads after the cable is broken due to the excessive flow rate of the wind, thereby effectively reducing the possibility of secondary freezing of the condensed beads. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-precision long-duration occasional partial discharge diagnosis and positioning device proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the side-section isometric structure of the housing of a high-precision, long-duration, sporadic partial discharge diagnosis and positioning device proposed by the present invention;

[0023] Figure 3 This is a schematic structural diagram of the buffer plate and buffer cylinder portion of a high-precision, long-duration, occasional partial discharge diagnosis and positioning device proposed by the present invention;

[0024] Figure 4 This is a schematic structural diagram of the buffer cylinder and piston cylinder of a high-precision long-duration occasional partial discharge diagnosis and positioning device proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the half-section axonometric structure of the buffer plate and buffer cylinder of a high-precision long-duration occasional partial discharge diagnosis and positioning device proposed by the present invention;

[0026] Figure 6 This is a schematic diagram of the half-section axonometric structure of the fixed block and piston cylinder of a high-precision long-duration sporadic partial discharge diagnostic and positioning device proposed by the present invention;

[0027] Figure 7 This is a schematic structural diagram of the extrusion plate and knocking block portion of a high-precision, long-duration, sporadic partial discharge diagnostic and positioning device proposed by the present invention;

[0028] Figure 8 This is a schematic diagram of a quarter-side cross-sectional structure of a housing of a high-precision, long-duration, occasional partial discharge diagnosis and positioning device proposed by the present invention;

[0029] Figure 9 This is a schematic structural diagram of the airbag and mounting block portion of a high-precision, long-duration, sporadic partial discharge diagnostic and positioning device proposed by the present invention;

[0030] Figure 10 This is a schematic diagram of the half-section axonometric structure of the mounting block and movable plate of a high-precision long-duration occasional partial discharge diagnostic positioning device proposed by the present invention.

[0031] In the figure: 1 housing, 11 controller, 12 support roller, 13 driving roller, 14 ultrasonic detector, 2 buffer cylinder, 21 buffer plate, 22 hydraulic plate, 23 fixed pipe, 24 connecting pipe, 3 piston cylinder, 31 piston column, 32 shock absorbing plate, 33 connecting pipe, 4 fixed cylinder, 41 extrusion plate, 42 knocking block, 43 spring, 5 mounting block, 51 windshield, 52 movable plate, 53 damper, 54 airbag. DETAILED DESCRIPTION

[0032] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0033] Reference Figure 1 and Figure 2 A high-precision long-duration occasional partial discharge diagnosis and positioning device comprises a housing 1 and further comprises:

[0034] A moving mechanism is connected inside the shell 1, and the moving mechanism includes a controller 11. The controller 11 is installed on the top of the shell 1. The top of the shell 1 is rotatably connected to a support roller 12, and the bottom of the shell 1 is rotatably connected to a drive roller 13. The output end of the controller 11 is coaxially fixedly connected to one end of the drive roller 13, and is used to control the rotation of the drive roller 13. The opposite sides of the support roller 12 and the drive roller 13 are pressed against the cable.

[0035] The ultrasonic detector 14 is installed on the inner wall of the shell 1.

[0036] There are two ultrasonic detectors 14 , which are mounted on both sides of the housing 1 in a one-to-one correspondence. The ultrasonic detectors 14 are used to detect and locate the cables.

[0037] Reference Figure 3-Figure 7 , vibration mechanism, the vibration mechanism includes two buffer components, the two buffer components are connected to both sides of the shell 1 one by one, the input end of the buffer component is located on the outside of the shell 1, and the input end is located on the inside of the shell 1 and is connected to the piston cylinder 3.

[0038] The buffer assembly includes a buffer plate 21, and the two buffer plates 21 are fixedly connected to the hydraulic plate 22 on the opposite side through the buffer column. The two outer side walls of the outer shell 1 are fixedly connected to the buffer cylinder 2. The two hydraulic plates 22 are sealed and slidably connected in the two buffer cylinders 2 in a one-to-one manner. The side of the buffer cylinder 2 away from the hydraulic plate 22 is connected to a fixed pipe 23, and the end of the fixed pipe 23 away from the buffer cylinder 2 is connected to the piston cylinder 3.

[0039] The piston cylinder 3 is fixedly connected to the outer shell 1, and one end is penetrated by a piston column 31 in a sealing and sliding connection. The top of the piston cylinder 3 is connected to a connecting tube 33 through a branch pipe. Both ends of the connecting tube 33 are connected to a fixed cylinder 4. The fixed cylinder 4 is fixedly connected to the inner wall of the outer shell 1, and is internally sealed and slidably connected to an extrusion plate 41. A spring 43 is fixedly connected between the extrusion plate 41 and the inner wall of the fixed cylinder 4. The extrusion plate 41 is away from the end of the connecting tube 33 and is fixedly connected to a knocking block 42 through a connecting column that seals and penetrates the fixed cylinder 4. The branch pipe, the connecting tube 33 and the fixed cylinder 4 are all centrally symmetrically distributed with respect to the cable axis. The four knocking blocks 42 extend out of one end of the fixed cylinder 4 and are spaced apart from the outside of the cable. The friction between the piston column 31 and the piston cylinder 3 is greater than the friction between the extrusion plate 41 and the fixed cylinder 4. The piston column 31 extends out of the piston cylinder 3 and is fixedly connected to a shock-absorbing plate 32 at one end, and the shock-absorbing plate 32 is spaced apart from the surface of the cable.

[0040] The interconnected parts of the buffer cylinder 2, the piston cylinder 3 and the fixed cylinder 4 are all filled with hydraulic oil to improve the transmission effect.

[0041] The two buffer cylinders 2 are connected to each other via a common connecting pipe 24 at the sides away from the buffer plate 21 , and the housing 1 is provided with slots for the branch pipes and the connecting pipe 24 to pass through.

[0042] The four knocking blocks 42 are distributed in a circular array at intervals on the outer peripheral side of the cable, wherein the branch pipe, the connecting pipe 33 and the fixing tube 4 are all distributed symmetrically with respect to the cable axis, thereby improving the distribution effect of the knocking blocks 42 .

[0043] Reference Figures 8-10 , also includes a windshield mechanism, the windshield mechanism includes a mounting block 5, two mounting blocks 5 are fixedly connected to the top and bottom of the shell 1 in a one-to-one correspondence, an inner cavity is opened in the mounting block 5, both ends of the inner cavity are sealed and slidably connected with movable plates 52, the movable plate 52 is fixedly connected to the windshield block at one end away from the inner cavity, the windshield block is sealed and penetrates the mounting block 5 at one end away from the movable plate 52, and is fixedly connected to the windshield plate 51, and the opposite sides of the two inner cavities are connected with air bags 54, and the air bags 54 are located between the mounting block 5 and the cable.

[0044] The airbags 54 include a plurality of airbags 54 , which are evenly spaced and distributed on the mounting block 5 .

[0045] A plurality of recoverable dampers 53 are installed between the windshield 51 and the mounting block 5 . The dampers 53 adopt existing technology and are used to slow down the movement of the windshield 51 and restore the windshield 51 to its original position after the external force is lost.

[0046] In the present invention, the support roller 12 and the driving roller 13 are respectively placed at the upper and lower ends of the cable, and then the controller 11 is turned on to control the driving roller 13 to rotate, so that the housing 1 moves along the surface of the cable. The movement of the housing 1 drives the two sets of ultrasonic detectors 14 to detect the cable;

[0047] Since cables in plateau areas are often installed at a higher height, the wind force acting on them at higher places is also greater. When the wind acts on the device, it will first generate a thrust on the buffer plate 21, causing the buffer plate 21 to drive the buffer column to slide along the inner wall of the buffer cylinder 2. The sliding of the buffer plate 21 will drive the hydraulic plate 22 to slide along the inner wall of the buffer cylinder 2. Since hydraulic oil is provided inside the buffer cylinder 2, the buffer plate 21 will be hindered by the hydraulic oil inside the buffer cylinder 2 and the friction between the various component structures when moving, thereby reducing shock, thereby reducing the vibration generated by the housing 1 and avoiding affecting the detection results of partial discharge.

[0048] When the buffer plate 21 drives the hydraulic plate 22 to squeeze the hydraulic oil inside the buffer cylinder 2, the internal pressure of the buffer cylinder 2 increases, and then the hydraulic oil inside the buffer cylinder 2 enters the interior of the piston cylinder 3 through the fixed pipe 23;

[0049] At this time, the internal pressure of the piston cylinder 3 increases, which causes the hydraulic oil inside the piston cylinder 3 to generate a thrust on the piston rod 31, causing the piston rod 31 to slide from the outside to the inside along the interior of the piston cylinder 3. At this time, due to the large friction between the outer wall of the piston rod 31 and the inner wall of the piston cylinder 3, the piston rod 31 slides slowly. At this time, the internal pressure of the piston cylinder 3 is large, which causes the hydraulic oil inside the piston cylinder 3 to enter the connecting pipe 33.

[0050] Then, the hydraulic oil enters the two sets of fixed cylinders 4 respectively through the connecting pipe 33. The hydraulic oil entering the fixed cylinder 4 will increase its internal pressure. At this time, the hydraulic oil inside the fixed cylinder 4 will generate a thrust on the extrusion plate 41, which will cause the extrusion plate 41 to slide from the outside to the inside along the inner wall of the fixed cylinder 4. The sliding of the extrusion plate 41 will squeeze the spring 43 and drive the knocking block 42 to move synchronously until the knocking block 42 contacts the surface of the cable. At this time, the knocking block 42 will cause the cable to vibrate.

[0051] Since the two groups of buffer cylinders 2 are connected by the connecting pipe 24, when one of the two groups of buffer plates 21 is affected by wind, the hydraulic oil in one group of buffer cylinders 2 will be transported to the other group of buffer cylinders 2 through the connecting pipe 24, thereby squeezing the hydraulic oil in both groups of buffer cylinders 2, thereby driving the knocking blocks 42 inside the four groups of fixed cylinders 4 to move synchronously, causing the four groups of knocking blocks 42 to knock on the cable, thereby causing ice on the cable surface to break and fall, thereby preventing large areas of ice from adhering to the cable surface and affecting the detection results;

[0052] When the knocking block 42 contacts the cable surface, the hydraulic oil pressure inside the fixed cylinder 4 cannot be balanced, so that part of the hydraulic oil inside the fixed cylinder 4 flows back into the piston cylinder 3 and squeezes the piston column 31 inside the piston cylinder 3 again, until the piston column 31 gradually overcomes the large friction between it and the piston cylinder 3 and drives the shock-absorbing plate 32 to contact the surface of the cable. Before the shock-absorbing plate 32 contacts the cable surface, the cable is in a vibrating state due to the impact generated by the knocking block 42. At this time, when the two sets of shock-absorbing plates 32 contact the cable surface, they can change the vibration frequency of the cable, thereby causing the cable to change the vibration frequency of the ice attached to the surface through the change in vibration frequency, further causing the ice to break and fall;

[0053] At the same time, the two sets of shock-absorbing plates 32 can also help reduce the amplitude of vibration when the cable vibrates, so that the cable can quickly maintain stability when vibrated, avoiding the impact of excessive vibration on the detection results of partial discharge.

[0054] When ice on the cable surface breaks and falls, condensation beads remain on the surface. At this time, the condensation beads on the cable surface can be blown away by the wind. However, when the wind is strong, the flow rate generated by the wind is too fast, which will cause the temperature of the condensation beads to drop, and then there is a possibility of the condensation beads freezing again.

[0055] At this time, when wind passes through the interior of the shell 1, it will generate thrust on the windshield 51, and the greater the wind force, the greater the thrust generated on the windshield 51. The thrust on the windshield 51 will drive the windshield block to slide along the inner wall of the mounting block 5. The sliding of the windshield 51 will drive the movable plate 52 to move synchronously. The sliding of the movable plate 52 will squeeze the gas inside the mounting block 5, thereby increasing the pressure of the gas inside the mounting block 5. At this time, the gas inside the mounting block 5 will enter the airbag 54, and the internal pressure of the airbag 54 will increase and expand. When the airbag 54 expands, it will cause the airbag 54 to reduce the opening inside the shell 1 through which wind can pass. At this time, only a small amount of wind can pass through the interior of the shell 1, thereby reducing the flow rate of the wind through the interior of the shell 1.

[0056] At the same time, when the wind shield 51 moves, it will squeeze the damper 53, and the damper 53 will slowly reset the wind shield 51, so that the air bag 54 will slowly shrink after expanding, so that when encountering intermittent strong wind conditions, the air bag 54 can also reduce the flow rate of wind through the inside of the shell 1, and reduce the temperature of the wind to a low level, which may cause the condensation beads on the surface of the cable to produce secondary freezing.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-precision long-duration occasional partial discharge diagnosis and positioning device, comprising a housing (1) movable on a cable, characterized in that: Also includes: an ultrasonic detector (14), the ultrasonic detector (14) being mounted on the housing (1); A vibration mechanism, the vibration mechanism includes a buffer component, the buffer component input end is located outside the shell (1), and the output end is located inside the shell (1) and is connected to a piston cylinder (3), the piston cylinder (3) is fixedly connected to the shell (1), and one end is penetrated by a piston column (31) in a sealed sliding connection, the piston cylinder (3) is connected to a knocking component, the friction between the piston column (31) and the piston cylinder (3) is greater than the friction of the internal structure of the knocking component, the piston column (31) extends out of the piston cylinder (3) and is fixedly connected to a shock-absorbing plate (32), and the knocking component output end and the shock-absorbing plate (32) are both spaced apart from the cable; The buffer assembly includes two, the buffer assembly includes a buffer plate (21), the two buffer plates (21) are distributed on the two outer sides of the shell (1) in a one-to-one correspondence, and the opposite sides are fixedly connected to the hydraulic plate (22) through the buffer column, the two outer side walls of the shell (1) are fixedly connected to the buffer cylinder (2), the two hydraulic plates (22) are sealed and slidably connected in the two buffer cylinders (2), the side of the buffer cylinder (2) away from the hydraulic plate (22) is connected to the fixed pipe (23), and the end of the fixed pipe (23) away from the buffer cylinder (2) is connected to the piston cylinder (3); the knocking assembly includes a connecting pipe ( 33), the top of the piston cylinder (3) is connected to the middle of the connecting tube (33) through a branch tube, and both ends of the connecting tube (33) are connected to a fixed cylinder (4), the fixed cylinder (4) is fixedly connected to the inner wall of the shell (1), and is internally sealed and slidably connected to an extrusion plate (41), a spring (43) is fixedly connected between the extrusion plate (41) and the inner wall of the fixed cylinder (4), and the extrusion plate (41) is fixedly connected to a knocking block (42) at one end away from the connecting tube (33) through a connecting column that seals and penetrates the fixed cylinder (4), and four knocking blocks (42) extend out of one end of the fixed cylinder (4) and are spaced apart from each other to fit the outer side of the cable; The interiors of the mutually communicating portions of the buffer cylinder (2), the piston cylinder (3) and the fixed cylinder (4) are all filled with hydraulic oil; The two buffer cylinders (2) are connected to each other via a common connecting pipe (24) on the side away from the buffer plate (21), and the housing (1) is provided with slots for the branch pipe and the connecting pipe (24) to pass through. The four knocking blocks (42) are distributed in a circular array at intervals on the outer peripheral side of the cable, wherein the branch pipe, the connecting pipe (33) and the fixing tube (4) are all distributed in a centrally symmetrical manner with respect to the cable axis.

2. A high-precision long-duration sporadic partial discharge diagnosis and positioning device according to claim 1, characterized in that: A moving mechanism is connected inside the housing (1), and the moving mechanism includes a controller (11). The controller (11) is installed on the top of the housing (1). The top of the housing (1) is rotatably connected to a support roller (12), and the bottom of the housing (1) is rotatably connected to a drive roller (13). The output end of the controller (11) is coaxially fixedly connected to one end of the drive roller (13) and is used to control the drive roller (13) to rotate. The opposite sides of the support roller (12) and the drive roller (13) are pressed against the cable.

3. The high-precision long-duration sporadic partial discharge diagnosis and positioning device according to claim 1, characterized in that: The ultrasonic detectors (14) include two, and the two ultrasonic detectors (14) are mounted on both sides of the housing (1) in a one-to-one correspondence. The ultrasonic detectors (14) are used to detect and locate the cable.

4. A high-precision long-duration sporadic partial discharge diagnosis and positioning device according to claim 1, characterized in that: The invention also includes a windshield mechanism, which includes a mounting block (5), two mounting blocks (5) are fixedly connected to the top and bottom of the housing (1) in a one-to-one correspondence, an inner cavity is provided in the mounting block (5), both ends of the inner cavity are sealed and slidably connected with movable plates (52), one end of the movable plate (52) away from the inner cavity is fixedly connected with a windshield block, one end of the windshield block away from the movable plate (52) is sealed and penetrates the mounting block (5), and is fixedly connected with a windshield plate (51), and the two opposite sides of the inner cavity are connected with air bags (54), and the air bags (54) are located between the mounting block (5) and the cable.

5. A high-precision long-duration sporadic partial discharge diagnosis and positioning device according to claim 4, characterized in that: The airbags (54) include a plurality of airbags (54), which are evenly spaced and distributed on the mounting block (5).

6. A high-precision long-duration sporadic partial discharge diagnosis and positioning device according to claim 4, characterized in that: A plurality of recoverable dampers (53) are installed between the wind deflector (51) and the mounting block (5).

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