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CN-122017296-A - Intelligent monitoring and positioning device for cable faults

CN122017296ACN 122017296 ACN122017296 ACN 122017296ACN-122017296-A

Abstract

The invention discloses an intelligent monitoring and positioning device for cable faults, which relates to the technical field of power equipment and comprises a first shell and a second shell, wherein the first shell is sleeved on a cable, one side of the first shell is hinged with the second shell through a hinge shaft, a buckle is arranged on one side, away from the hinge shaft, of the second shell, the first shell and the second shell are arranged on a node to be tested of the cable through the buckle, an electric control box is fixed on the first shell, a clamping assembly is arranged in the first shell and the second shell, the clamping assembly comprises a first clamping assembly and a second clamping assembly, the first clamping assembly is arranged in two, symmetrically arranged in the middle of the first shell and the second shell, and the second clamping assembly is symmetrically arranged on two sides of the first clamping assembly and positioned at the edge of the first shell and the second shell.

Inventors

  • XU SHAOHE
  • LIU WENJIN
  • LIU BINGNAN

Assignees

  • 珠海小合科技有限公司

Dates

Publication Date
20260512
Application Date
20260228

Claims (8)

  1. 1. An intelligent monitoring and positioning device for cable faults, which is characterized by comprising: the cable comprises a shell, wherein the shell is sleeved on a cable (1), the shell comprises a first shell (2) and a second shell (3), one side of the first shell (2) is hinged with the second shell (3) by adopting a hinge shaft (5), a buckle (4) is arranged on one side, far away from the hinge shaft (5), of the second shell (3), and the first shell (2) and the second shell (3) are arranged on a node to be tested of the cable (1) by adopting the buckle (4); The electric control box (6) is fixed on the first shell (2); The clamping assembly is arranged in the first shell (2) and the second shell (3); The clamping assembly comprises a first clamping assembly (7) and a second clamping assembly (8), wherein the first clamping assembly (7) is configured to be two, the first clamping assembly is symmetrically arranged at the middle position of the first shell (2) and the second shell (3), the second clamping assembly (8) is symmetrically arranged at the two sides of the first clamping assembly (7) and located at the edge positions of the first shell (2) and the second shell (3), and the second clamping assembly (8) is symmetrically configured to be a plurality of clamping assemblies.
  2. 2. The intelligent monitoring and positioning device for cable faults according to claim 1, wherein a current transformer (31) is fixed in each of the first shell (2) and the second shell (3), and the two current transformers (31) form a closed loop when being in close contact.
  3. 3. The intelligent monitoring and positioning device for cable faults according to claim 1, characterized in that the first clamping assembly (7) comprises: The sliding block (71) is arranged in the shell in a sliding manner, and a clamping spring I is arranged between the sliding block and the shell; A contact sensor (72) slidably disposed at the middle position of the slider (71), and a pressing spring is disposed between the contact sensor and the slider (71); and the first clamping ring (73) is sleeved on the outer wall of the sliding block (71) and is in sliding connection with the shell.
  4. 4. A cable fault intelligent monitoring and positioning device according to claim 3, characterized in that the first clamping ring (73) comprises: The half ring body (731) is provided with a sliding groove (732) in the middle of the half ring body, the position of the half ring body corresponding to the sliding block (71), two guide plates (733) are symmetrically fixed on one side, close to the shell, of the half ring body (731), the two guide plates (733) are in sliding connection with the shell, and a clamping spring II is arranged between the half ring body and the shell; The ventilation grooves (734) are arranged in two, symmetrically penetrate through the half ring body (731), and penetrate through the half ring body (731) along the axial direction; The first heat dissipation holes (735) are arranged in a plurality, are equidistantly formed in the inner wall of the half ring body (731), and are communicated with the ventilation grooves (734).
  5. 5. The intelligent monitoring and positioning device for cable faults according to claim 4, wherein a first bell mouth (736) is formed on two sides of the ventilation groove (734), large openings of the first bell mouth (736) are oppositely arranged, and cross sections of positions of the ventilation groove (734) corresponding to the plurality of first heat dissipation holes (735) are the same as small openings of the first bell mouth (736).
  6. 6. The intelligent monitoring and positioning device for cable faults according to claim 4, wherein an elastic ring one (737) is embedded and installed at the edge position of the first heat dissipation hole (735), and the elastic ring one (737) protrudes out of the first heat dissipation hole (735) when no external force is applied.
  7. 7. The intelligent monitoring and positioning device for cable faults according to claim 1, characterized in that the second clamping assembly (8) comprises: a sliding column (81) which is arranged in the shell in a sliding manner, and a clamping spring III is arranged between the sliding column and the shell; The second clamping ring (82) is hinged on the sliding column (81) by adopting a hinge column (83), and a torsion spring is sleeved at the hinge position; an induced draft slot (84) which is penetrated and arranged on the second clamping ring (82) and is penetrated and arranged along the axial direction of the second clamping ring (82); And the second heat dissipation holes (85) are arranged in a plurality, are equidistantly formed in the inner wall of the second clamping ring (82), and are communicated with the air guide grooves (84).
  8. 8. The intelligent monitoring and positioning device for cable faults according to claim 7, wherein two sides of the air guiding groove (84) are provided with two horn mouths (86), large mouths of the two horn mouths (86) are oppositely arranged, and cross sections of the air guiding groove (84) and the positions corresponding to the two heat dissipation holes (85) are the same as small mouths of the two horn mouths (86); and the second elastic ring (87) is embedded and installed at the edge position of the second radiating hole (85), and the second elastic ring (87) protrudes out of the second radiating hole (85) when the second radiating hole is not subjected to external force.

Description

Intelligent monitoring and positioning device for cable faults Technical Field The invention relates to the technical field of power equipment monitoring, in particular to an intelligent cable fault monitoring and positioning device. Background The power cable is an electric energy transmission pulse of a smart grid and important industrial facilities, the operation reliability of the power cable is critical, the cable may malfunction due to external force damage, insulation aging, local overheating and the like in long-term operation, in the prior art, a cable fault monitoring method based on vibration signal analysis (such as Distributed Acoustic Sensing (DAS) and piezoelectric sensors) has been applied, and the clamp type sensor is paid attention to because of the advantages of simple installation, no power failure and the like. However, the existing clamping type monitoring device has the obvious defects that a sensor is usually fixed on a cable with a large clamping force to ensure signal coupling quality, irreversible plastic deformation or indentation is generated on an outer sheath of the cable due to long-term static clamping, insulation aging can be accelerated under high-load heating conditions, even new fault points are caused, a vibration signal is disturbed, the cable can continuously vibrate in normal operation and environmental wind, the sensor and the cable are rigidly coupled in a traditional rigid clamping mode, a large amount of irrelevant environment and body vibration noise are picked up by a device body, weak characteristic signals generated by fault impact (such as chiseling and partial discharge) are seriously submerged, false alarm or leakage is caused, and the device for fixing the clamping force is difficult to adapt to thermal expansion and cold contraction caused by temperature change of cables with different diameters, and can cause excessive loosening (signal distortion) or excessive tightening (damage aggravation) of the clamping force. Aiming at the problems, the invention provides an intelligent cable fault monitoring and positioning device for solving the problems. Disclosure of Invention In order to achieve the purpose, the invention provides the following technical scheme that the intelligent monitoring and positioning device for cable faults comprises: The shell is sleeved on the cable and comprises a first shell and a second shell, one side of the first shell is hinged with the second shell by adopting a hinge shaft, a buckle is arranged on one side of the second shell, which is far away from the hinge shaft, and the first shell and the second shell are arranged on a node to be tested of the cable by adopting the buckle; The electric control box is fixed on the first shell; The clamping assembly is arranged in the first shell and the second shell; The clamping assemblies comprise a first clamping assembly and a second clamping assembly, the first clamping assembly is arranged in two, the first clamping assembly is symmetrically arranged at the middle position of the first shell and the middle position of the second shell, the second clamping assembly is symmetrically arranged at the two sides of the first clamping assembly and is positioned at the edge positions of the first shell and the second shell, and the second clamping assembly is symmetrically arranged in a plurality of parts. Further, preferably, the first and second shells are fixed with current transformers, and the two current transformers form a closed loop when they are in close contact. Further, preferably, the first clamping assembly includes: The sliding block is arranged in the shell in a sliding manner, and a clamping spring I is arranged between the sliding block and the shell; the contact sensor is arranged in the middle of the sliding block in a sliding manner, and a pressing spring is arranged between the contact sensor and the sliding block; The first clamping ring is sleeved on the outer wall of the sliding block and is in sliding connection with the shell. Further, preferably, the first clamping ring includes: The middle of the semi-ring body is provided with a sliding groove corresponding to the sliding block, two guide plates are symmetrically fixed on one side of the semi-ring body, which is close to the shell, the two guide plates are connected with the shell in a sliding manner, and a clamping spring II is arranged between the two guide plates and the shell; the two ventilation grooves are symmetrically arranged on the semi-ring body in a penetrating way and axially arranged along the semi-ring body in a penetrating way; the first heat dissipation holes are arranged in a plurality of mode, are formed in the inner wall of the semi-ring body at equal intervals, and are communicated with the ventilation grooves. Further, preferably, a first bell mouth is formed on both sides of the ventilation slot, large openings of the first bell mouth are arranged relatively, and the cross section of the