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CN-122017463-A - High-voltage cable fault positioning device

CN122017463ACN 122017463 ACN122017463 ACN 122017463ACN-122017463-A

Abstract

The invention relates to the technical field of cable detection, in particular to a high-voltage cable fault positioning device, which comprises a mounting unit, a fixing unit and a rotating unit, wherein the mounting unit is provided with a first channel, the first channel is arranged in a penetrating way along the central axis of the mounting unit, so that the mounting unit can be sleeved outside a cable, the fixing unit is arranged at the end part of the mounting unit and is provided with a second channel, the first channel is communicated with the second channel to form a main channel, the rotating unit is arranged at the end part of the mounting unit, the mounting unit can be driven by the rotating unit to rotate around the central axis of the mounting unit, so that the first channel can rotate, the rotating speed of the mounting unit can be adjusted, the speed control unit comprises a walking unit, the walking unit can drive the main channel to axially move along the outer side of the cable, the rotating unit is driven by the rotating unit to perform fault detection along the rotating side of the cable, the sensor is mounted on the checking unit, and full-circumference coverage acquisition is completed along with the rotating action, so that the full-circumference detection of the cable is achieved.

Inventors

  • LIU ZHENGFENG
  • MA GUOBING

Assignees

  • 淮安科达电气有限公司

Dates

Publication Date
20260512
Application Date
20260317

Claims (10)

  1. 1. A high voltage cable fault locating device, comprising: the installation unit (100) is provided with a first channel, and the first channel is arranged in a penetrating manner along the central axis of the installation unit (100), so that the installation unit (100) can be sleeved outside a cable; A fixing unit (200) mounted to an end of the mounting unit (100) and having a second passage, the first passage communicating with the second passage and constituting a main passage; a rotation unit (300) mounted to an end of the mounting unit (100), the mounting unit (100) being capable of being driven by the rotation unit (300) to rotate about its own central axis such that the first passage is rotated, and a rotational speed of the mounting unit (100) being adjustable; the speed control unit (400) comprises a walking unit (420), the walking unit (420) can drive the main channel to axially move along the outer side of the cable, the walking unit (420) can move towards the first direction or the second direction, and the rotation speed of the installation unit (100) can be synchronously adjusted through the movement of the walking unit (420).
  2. 2. The high voltage cable fault positioning device as claimed in claim 1, wherein the rotating unit (300) comprises a driving gear (310), a rotating part (320) and a transmission assembly (330), the rotating part (320) is formed by connecting a plurality of gears with different diameters, the gears are connected through a connecting shaft (321), the gear with the largest diameter is meshed with the driving gear (310), the driving gear (310) is fixedly arranged at the end part of the mounting unit (100), the driving gear (310) can drive the mounting unit (100) to rotate by driving the rotating part (320) to rotate, the transmission assembly (330) is arranged at one side of the rotating part (320), the transmission assembly (330) comprises a second gear (332), and the second gear (332) is meshed with the gears in the rotating part (320).
  3. 3. The high voltage cable fault locating device according to claim 1, wherein the fixing unit (200) comprises a fixing portion (210), the fixing portion (210) is installed on the outer side of the second channel, a cavity is formed in the fixing portion (210), the speed control unit (400) further comprises a locating block (410) and a steering structure (440), the locating block (410) is arranged in the cavity and is allowed to move in the cavity in a first direction or a second direction, the walking unit (420) comprises a roller and a driving shaft (421), the roller can be rotated through rotating the driving shaft (421), one end of the driving shaft (421) is connected with a transmission shaft (340) through the steering structure (440), and the transmission shaft (340) can be driven to rotate by the driving shaft (421).
  4. 4. The high voltage cable fault locating device according to claim 3, wherein the steering structure (440) comprises a first steering part (441) and a second steering part (442), and the first steering part (441) and the second steering part (442) are respectively provided with a bevel gear set meshed with each other, and the bevel gear sets spatially convert the rotation of the driving shaft (421) so that the rotation power of the driving shaft (421) is transmitted to the end part of the driving shaft (340), and the driving shaft (421) can drive the driving shaft (340) to synchronously rotate.
  5. 5. The high voltage cable fault locating device according to claim 2, wherein the second gear (332) is meshed with a first gear (331), the first gear (331) can be driven to rotate by the transmission shaft (340), the second gear (332) is enabled to synchronously rotate, the transmission shaft (340) is further driven to rotate through the driving shaft (421), and the rotating part (320) is enabled to drive the driving gear (310) to rotate.
  6. 6. The high voltage cable fault locating device according to claim 3, wherein the number of the locating blocks (410) is two, and both ends of the driving shaft (421) penetrate through the locating blocks (410) so that the locating blocks (410) drive the second connecting portions (220) to move synchronously when moving in the cavity of the fixing portion (210), the steering structure (440) is connected with the first telescopic rod (430), and the steering structure (440) can change the length of the steering structure according to the movement of the locating blocks (410) so that the steering structure (440) can move synchronously along with the driving shaft (421).
  7. 7. The high-voltage cable fault positioning device according to claim 3, wherein a first inclined plane block (411) is installed on one side of the positioning block (410), a second inclined plane block (412) is arranged in the cavity of the fixing portion (210), a movable shaft (413) is connected to one side of the second inclined plane block (412), the movable shaft (413) is connected to one side of the transmission assembly (330), corresponding surfaces of the first inclined plane block (411) and the second inclined plane block (412) are arranged to be matched inclined planes, the positioning block (410) moves towards a first direction, the first inclined plane block (411) moves towards the first direction, the second inclined plane block (412) moves towards the direction where the rotating unit (300) is located, and the movable shaft (413) pushes the transmission assembly (330) to move along the outer side of the transmission shaft (340).
  8. 8. The high-voltage cable fault positioning device as claimed in claim 7, wherein the outer side of the transmission shaft (340) is provided with a groove body (341), a joint of the transmission assembly (330) and the groove body (341) is provided with a protruding block, the protruding block is located in an inner cavity of the groove body (341), and the protruding block can be moved along the groove body (341) by moving the transmission assembly (330), so that the transmission assembly (330) rotates around the transmission shaft (340).
  9. 9. The high voltage cable fault locating device according to claim 4, wherein the bevel gear set of the driving shaft (421) is connected with a first steering part (441), the bevel gear set of the second steering part (442) is connected with the driving shaft (340), the first steering part (441) and the second steering part (442) are connected through a second telescopic rod (443), the length of the second telescopic rod (443) is adjustable, and the second steering part (442) is fixedly arranged in the cavity of the fixing part (210), so that the driving shaft (421) can drive the first steering part (441) to move when moving, and the length of the second telescopic rod (443) is changed, and the second steering part (442) is kept fixed, so that the position of the driving shaft (340) is unchanged.
  10. 10. The high-voltage cable fault locating device according to claim 1, wherein the inner cavity of the installation unit (100) is fixedly provided with a first connecting portion (110), the fixing unit (200) further comprises a second connecting portion (220), and the first connecting portion (110) is movably sleeved with the end portion of the second connecting portion (220).

Description

High-voltage cable fault positioning device Technical Field The invention relates to the technical field of cable detection, in particular to a high-voltage cable fault positioning device. Background In the field of high-voltage cable fault detection, a main stream technical route is a combination scheme of coarse positioning shrinkage range and fine detection along a cable. An operation and maintenance person locks a fault range at a target road section within tens of meters through electrical means such as a low-voltage pulse reflection method, a secondary pulse method and the like, then adopts a clamping type along-cable inspection device, carries on multiple types of sensors such as partial discharge, acousto-magnetic synchronous detection, infrared thermal imaging and the like, and is installed on the outer side of a cable to move independently. The checking device relies on the arc clamping jaw and the driving roller structure, can be adapted to cables with different diameters, collects discharge signals, acoustic signals and temperature data on the surfaces of the cables in the moving process, realizes the primary identification of fault points, and is widely applied to the fault inspection work of underground pipe galleries, cable ditches and overhead cables. The existing partial discharge, acousto-magnetic detection sensors of the cable-following investigation device are installed at fixed angles, and the sensor acquisition view only covers a single-side area of the cable facing the sensor. In the actual detection process, for the parts of the cable, such as the lower part, the inner side and the like, of the sensor, and the hidden areas of the cable bending section, the inner side of the joint and the like, the sensor cannot effectively capture key fault characteristics of discharging sound waves, partial discharging signals and the like, so that hidden faults of sheath breakage, insulation aging and the like in the areas are extremely easy to miss, the overall recognition rate of cable faults is greatly reduced, and the actual requirements of high-precision fault detection are difficult to meet. Disclosure of Invention The invention aims to provide a high-voltage cable fault positioning device for solving the problems in the background technology. In order to achieve the above purpose, the present invention provides the following technical solutions: A high voltage cable fault locating device comprising: The installation unit is provided with a first channel, and the first channel is arranged in a penetrating manner along the central axis of the installation unit, so that the installation unit can be sleeved outside the cable; a fixing unit installed at an end of the installation unit and having a second passage, the first passage communicating with the second passage and constituting a main passage; the rotating unit is arranged at the end part of the mounting unit, the mounting unit can be driven by the rotating unit to rotate around the central axis of the mounting unit, so that the first channel rotates, and the rotating speed of the mounting unit is adjustable; The speed control unit comprises a walking unit, the walking unit can drive the main channel to axially move along the outer side of the cable, the walking unit can move towards the first direction or the second direction and can synchronously adjust the rotation speed of the installation unit through the movement of the walking unit. Preferably, the rotating unit comprises a driving gear, a rotating part and a transmission assembly, the rotating part is formed by connecting a plurality of gears with different diameters and is connected with the gears through a connecting shaft, the gear with the largest diameter is meshed with the driving gear, the driving gear is fixedly arranged at the end part of the mounting unit, the driving gear can drive the mounting unit to rotate by driving the rotating part to rotate, the transmission assembly is arranged on one side of the rotating part, and the transmission assembly comprises a second gear, and the second gear is meshed with the gears in the rotating part. Preferably, the fixing unit comprises a fixing part, the fixing part is installed in the outside of the second channel, a cavity is arranged in the fixing part, the speed control unit further comprises a positioning block and a steering structure, the positioning block is arranged in the cavity and is allowed to move towards the first direction or the second direction, the walking unit comprises a roller and a driving shaft, the roller can rotate through the driving shaft, one end of the driving shaft is connected with a driving shaft through the steering structure, and the driving shaft can be driven to rotate by the driving shaft. Preferably, the steering structure comprises a first steering part and a second steering part, wherein the first steering part and the second steering part are respectively provided with a bevel gear set mes