A detection device for broken strands of transmission wires

Abstract

The invention discloses a transmission line breakage detection device. The transmission line breakage detection device comprises a base, a hollow guide tube, a conical probe, a spring, a cylindrical probe, a sensor and a controller. The transmission line breakage detection device is arranged on a walking arm of an inspection robot, makes contact with a guide line through the probes, senses the external waviness of the guide line, converts the displacement of the conical probe into voltage signals through the sensor and conducts analysis according to a voltage-time image, and whether the guide line breakage occurs or not can be judged by observing whether the frequency of the inspected image is consistent with the amplitude of the inspected image or not. Compared with the prior art, the transmission line breakage detection device has the advantages that negligence of manual routing inspection and negligence of routing inspection of a visible light camera of the inspection robot are avoided, the defect that the visible light camera has to prevent the robot from scanning details of the guide line is overcome, and the transmission line breakage detection device is simple, reliable, low in cost and accurate in detection and can not interfere with normal operation of the inspection robot when used as an additional device of the inspection robot.

Description

technical field [0001] The invention belongs to the field of circuit equipment, and relates to a detection device, in particular to a detection device for broken strands of a transmission wire. Background technique [0002] The safe operation of the power industry is related to the lifeline of my country's national economy and is also closely related to people's livelihood. Ensuring the stable and reliable operation of transmission lines is the pursuit of various power industry departments. my country's power transmission lines are usually stranded wire structures. Because the lines are exposed to the outdoors, wind and sun, rain and lightning, strong winds and ice, and some other factors, the wires covered by the surface are prone to strand breakage. After the strands of the line are broken, due to the smaller cross-section, the current-carrying temperature of the remaining strands will increase, and the increase in temperature will further soften the strands. When the tem...

AI Technical Summary

Problems solved by technology

After the strands of the line are broken, due to the smaller cross-section, the current-carrying temperature of the remaining strands will increase, and the increase in temperature will further soften the strands. When the temperature rise reaches a certain level, it will cause other strands to break. Under the action of fatigue wear and temperature rise, the wire will continue to break, which will consume more power during transmission and bring great danger to the normal operation of the transmission line

[0003] Nowadays, the general method of detecting whether a wire has broken strands is mainly manual line inspection and helicopter inspection. The workload is heavy, and workers work in the field, which is relatively hard and has blind spots.

Helicopter line inspection costs are high, and there are potential safety hazards, and because of its fast detection speed, it is easy to ignore minor damage to the wire

In addition, the patent No. CN201732077U of the utility model high-voltage transmission line wire breakage and automatic detection device for damage proposes a method of installing a visible light pan-tilt camera on the line inspection robot, which can obtain damaged image information, but due to the inspection of the line inspection robot During the inspection, the image refresh speed of the pan-tilt camera is not fast enough to obtain a clear wire image when the robot is running. You must stop the inspection and use the pan-tilt camera to zoom, focus, and capture the image to obtain whether there is a broken wire in the wire.

This method seriously affects the line inspection efficiency of the line inspection robot

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