CN-121978459-A - Portable medium-voltage carrier line detection device and method

CN121978459ACN 121978459 ACN121978459 ACN 121978459ACN-121978459-A

Abstract

The invention relates to a portable medium-voltage carrier line detection device and method, comprising an insulating rod, a signal collector and a fixed box, wherein the fixed box is provided with a wire slot for accommodating a wire to be detected, a sliding rod and a screw rod are arranged along the axial direction of the wire slot and driven by a driving motor, a first sliding block is matched with the screw rod and the sliding rod and drives a sliding frame to move, an arc-shaped ice crushing strip is arranged on the sliding frame and is matched with a guide wheel and a guide folding rail to crush an ice shell, a second sliding block drives an ice-shoveling semi-ring to move along the axial direction through a second telescopic rod, and a semi-ring magnet is matched with the extrusion strip through a first telescopic rod, a first spring and a first extrusion wheel to form a current induction magnetic ring and axially scans and monitors current along with the first sliding block. The invention has the effect of improving the detection stability.

Inventors

WANG CHAOLIANG
YE FANGBIN
SHEN WANGPING
LIU WEI
SHEN HAO
SHI BOWEN
WU YUEBO
WANG JINRONG
SUN JIANQIAO
XU SHIYU
WANG WEIFENG
JIANG QUN

Assignees

国网浙江省电力有限公司营销服务中心

Dates

Publication Date: 20260505
Application Date: 20260130

Claims (10)

1. The portable medium-voltage carrier line detection device is characterized by comprising an insulating rod (1), a signal collector (11) and a fixed box (2) arranged on the signal collector (11), wherein a wire slot (22) for accommodating a wire (12) to be detected is arranged on the fixed box (2); a sliding rod (23) and a screw rod (24) are arranged on the fixed box (2) along the axial direction of the wire slot (22), and the screw rod (24) is in transmission connection with a driving motor (74); The portable medium voltage carrier line detection device further comprises a first sliding block (25), the first sliding block (25) is in sliding fit with the sliding rod (23) and is in transmission fit with the screw rod (24), the driving motor (74) drives the screw rod (24) to rotate so as to drive the first sliding block (25) to move along the axial direction of the sliding rod (23), the portable medium voltage carrier line detection device further comprises a sliding frame (4), and the sliding frame (4) is in sliding connection with the fixed box (2); An arc-shaped ice crushing strip (44) and a guide wheel (45) matched with the arc-shaped ice crushing strip (44) are arranged on the sliding frame (4), and a guide folding rail (48) is arranged on the fixed box (2) so that the arc-shaped ice crushing strip (44) can crush and crush ice shells on the surface of the wire (12) to be tested in the moving process of the sliding frame (4); The portable medium-voltage carrier line detection device further comprises a second sliding block (5), a second telescopic rod (51) and an ice-shoveling semi-ring (52), wherein the second sliding block (5) is in sliding fit with the sliding rod (23), and the ice-shoveling semi-ring (52) is connected with the second sliding block (5) through the second telescopic rod (51) so as to shoveling broken ice shells along with the axial movement of the second sliding block (5) along the sliding rod (23); The portable medium-voltage carrier line detection device further comprises a first telescopic rod (26), a half-ring magnet (27), a first spring (3), a first extrusion wheel (31) and an extrusion strip (32), wherein the half-ring magnet (27) is connected with the first sliding block (25) through the first telescopic rod (26), the first extrusion wheel (31) is matched with the extrusion strip (32), and the first spring (3) is used for providing reset acting force for the half-ring magnet (27) so that the half-ring magnet (27) is in closed butt joint with the wire (12) to be detected to form a current induction magnetic ring and is used for current monitoring of the wire (12) to be detected; the semi-ring magnet (27) moves along the axial direction of the sliding rod (23) along with the first sliding block (25) so as to perform axial scanning type current monitoring on the wire (12) to be tested in a closed state.
2. Portable medium voltage carrier line detection device according to claim 1, characterized in that ear plates (21) are arranged on both sides of the fixed box (2), the wire grooves (22) are arranged on the fixed box (2) and between the two ear plates (21), the sliding rods (23) and the screw rods (24) are arranged along the axial direction of the wire grooves (22), and the two ends of the sliding rods (23) and the screw rods (24) are respectively connected with the ear plates (21).
3. The portable medium voltage carrier line detection device according to claim 2, wherein a first telescopic rod (26) is connected to the first slider (25), the half-ring magnet (27) is connected to the first telescopic rod (26), the first extrusion wheel (31) is rotatably arranged on the first telescopic rod (26), the extrusion strip (32) is arranged on the ear plate (21), and the first spring (3) is used for providing a reset force for the half-ring magnet (27), so that the first extrusion wheel (31) drives the half-ring magnet (27) to be in closed butt joint when rolling extrusion along the extrusion strip (32).
4. A portable medium voltage carrier line detection device according to claim 3, characterized in that the extrusion strip (32) comprises an extrusion outer section (321), an extrusion inclined section (322) and an extrusion inner section (323) connected in sequence.
5. The portable medium voltage carrier line detection device according to claim 1, wherein a chute (41) is arranged on the sliding frame (4), a connecting rod (42) is connected in a sliding manner in the chute (41), one end of the connecting rod (42) is connected with a semicircular piece (43), and an arc-shaped broken ice strip (44) is connected to the semicircular piece (43), so that the arc-shaped broken ice strip (44) can squeeze and break ice shells on the surface of a wire (12) to be detected along with the axial movement of the sliding frame (4) along the wire slot (22).
6. The portable medium voltage carrier line detection device according to claim 5, wherein a guide rail (46) is provided on the fixed box (2), the guide wheel (45) is rotatably provided on the sliding frame (4), and the guide wheel (45) is slidably matched with the guide rail (46) so as to guide and limit the sliding frame (4) to move axially along the wire slot (22).
7. The portable medium voltage carrier line detection device according to claim 5, wherein a guiding folding rail (48) is arranged on the fixed box (2), the right angle rod (47) is connected to the semicircular sheet (43), and the right angle rod (47) is in sliding fit with the guiding folding rail (48) so as to guide the motion trail of the semicircular sheet (43) and the arc-shaped ice crushing strip (44).
8. The portable medium voltage carrier line detection device according to claim 1, wherein a second telescopic rod (51) is connected to the second slider (5), the ice-shoveling semi-ring (52) is connected to the second telescopic rod (51), the second extrusion wheel (54) is rotatably arranged on the second telescopic rod (51), and the second spring (53) is used for providing a reset acting force for the ice-shoveling semi-ring (52), so that the second extrusion wheel (54) drives the ice-shoveling semi-ring (52) to be attached to the outer surface of the wire (12) to be detected and shoveled when rolling and extruding along the extrusion strip (32).
9. The portable medium voltage carrier line detection device according to claim 1, wherein an upper rotating rod (6) and a lower rotating rod (7) are arranged in the fixed box (2), an output shaft of the driving motor (74) is connected with the lower rotating rod (7), a first gear (71) is connected to the lower rotating rod (7), a second gear (72) is connected to the upper rotating rod (6), a first toothed belt (73) is connected between the first gear (71) and the second gear (72), a third gear (63) is connected to the upper rotating rod (6), a fourth gear (64) is connected to the screw (24), and a second toothed belt (65) is connected between the third gear (63) and the fourth gear (64), so that the driving motor (74) drives the screw (24) to rotate.
10. Based on claim 1 The portable medium voltage carrier line detection method according to any one of claims 9, characterized in that the method comprises: Obtaining positioning state information of a wire to be detected entering a wire slot, and obtaining the positioned wire to be detected; According to the positioned wire to be tested, performing ice shell extrusion crushing control to enable the arc-shaped crushed ice strips to extrude and crush the ice shells on the surface of the positioned wire to be tested, so as to obtain crushed ice shells; according to the crushed ice shells, ice shell shoveling control is carried out, so that the broken ice shells are shoveled by the ice shoveling semi-rings, and the cleaned wire to be tested is obtained; and according to the cleaned lead to be tested, executing semi-ring magnet closing control to form a current induction magnetic ring, and executing axial scanning current monitoring control to obtain a current monitoring result.

Description

Portable medium-voltage carrier line detection device and method Technical Field The invention belongs to the technical field of power line operation and maintenance detection, and particularly relates to a portable medium-voltage carrier line detection device and method. Background At present, carrier line detection of a medium-voltage distribution line is usually required to be completed under a live running state of a wire, most of operation sites are in an overhead line environment, and the detection process has higher requirements on insulation safety and portability of the device and adaptation capability of the wire due to the influence of factors such as limited operation space, inconvenience in manual high-altitude operation, unstable surface state of the wire and the like. The existing medium-voltage carrier line detection mostly adopts an external detection device to carry out clamping type contact or local fixed point sampling on a wire, under the condition that attachments such as ice shells exist on the surface of the wire, the clamping structure is easy to generate insufficient lamination, unstable contact or incomplete closing in place, and the surface of the wire is usually required to be cleaned manually repeatedly and the detection position is adjusted for many times, so that the problems of discontinuous detection process, poor data consistency and complicated operation process are easily caused. Disclosure of Invention The invention aims to provide a portable medium-voltage carrier line detection device and method, which are used for solving the technical problems of discontinuous detection process and large fluctuation of monitoring results caused by the change of the surface state of a lead and unstable clamping and attaching of the traditional medium-voltage carrier line detection mode. In order to achieve the above purpose, the present invention adopts the following technical scheme: The invention provides a portable medium-voltage carrier line detection device, which comprises an insulating rod, a signal collector and a fixed box arranged on the signal collector, wherein a wire slot for accommodating a wire to be detected is arranged on the fixed box; a sliding rod and a screw rod are arranged on the fixed box along the axial direction of the wire slot, and the screw rod is in transmission connection with a driving motor; the portable medium voltage carrier line detection device further comprises a first sliding block, the first sliding block is in sliding fit with the sliding rod and is in transmission fit with the screw rod, the driving motor drives the screw rod to rotate so as to drive the first sliding block to move along the axial direction of the sliding rod, and the portable medium voltage carrier line detection device further comprises a sliding frame which is in sliding connection with the fixed box; the fixed box is provided with a guide folding rail so that the arc-shaped broken ice strips squeeze and crush ice shells on the surfaces of the wires to be tested in the moving process of the sliding frame; the portable medium-voltage carrier line detection device further comprises a second sliding block, a second telescopic rod and an ice-shoveling semi-ring, wherein the second sliding block is in sliding fit with the sliding rod, and the ice-shoveling semi-ring is connected with the second sliding block through the second telescopic rod so as to shoveling broken ice shells along with the axial movement of the second sliding block along the sliding rod; the portable medium-voltage carrier line detection device further comprises a first telescopic rod, a half-ring magnet, a first spring, a first extrusion wheel and an extrusion strip, wherein the half-ring magnet is connected with the first sliding block through the first telescopic rod, the first extrusion wheel is matched with the extrusion strip, and the first spring is used for providing a reset acting force for the half-ring magnet so that the half-ring magnet is in closed butt joint with a wire to be detected to form a current induction magnetic ring and is used for current monitoring of the wire to be detected; the semi-ring magnet moves along the axial direction of the sliding rod along with the first sliding block so as to carry out axial scanning type current monitoring on the wire to be tested in a closed state. By adopting the technical scheme, the wire slot is used for accommodating the wire to be detected and forming limit positioning, and the position and the posture of the wire to be detected can be restrained in the preset detection area, so that the relative position of the wire to be detected in the follow-up processes of breaking ice, shoveling ice and current monitoring is ensured to be stable, and the unstable contact and detection interruption caused by the shaking or deviation of the wire are reduced; the driving motor drives the screw rod to rotate and drives the first sliding block to axially move a