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X-ray detection device and detection method for overhead line strain clamp

A detection device and a technology of strain-resistant clamps, which are applied in overhead line/cable equipment, measuring devices, material analysis using wave/particle radiation, etc., can solve problems such as power outages, increased operation difficulty, and high voltage of live lines, and achieve Easy to recycle, easy to install or disassemble, and reduce the difficulty of operation

Active Publication Date: 2021-03-02
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JINHUA POWER SUPPLY CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the crimping quality of overhead line tension clamps is tested by X-rays. However, since the transmission line tension clamps are located at the top of the tower, the height from the ground is high, and the voltage of live lines is high. If normal X-rays are required Detection generally requires power outage for a certain period of time, which will affect the power transmission of the line, cause a long-term power outage of the entire line, and cause inconvenience to a large number of users. Secondly, the 110KV and 220KV transmission towers are compact in structure and have a small combination gap. The volume of the X-ray detection device is relatively large, which will increase the difficulty of operation during live detection

Method used

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  • X-ray detection device and detection method for overhead line strain clamp
  • X-ray detection device and detection method for overhead line strain clamp
  • X-ray detection device and detection method for overhead line strain clamp

Examples

Experimental program
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Embodiment 1

[0039] Such as Figure 1 to Figure 5 As shown, this embodiment shows an X-ray detection device for overhead line tension clamps, including an X-ray source 2, a detector 3 and a bracket 1, and the X-ray source 2 and the detector 3 are respectively arranged on the bracket 1 At both ends, the X-ray source 2 irradiates X-rays onto the detector 3, the strain-resistant clamp 5 is located in the X-ray irradiation area on the surface of the detector 3, and detection devices are provided on both sides of the detector 3 on the line Sliding pulley4.

[0040] In this embodiment, the two sides of the detector 3 are provided with pulleys 4 for fixing the detection device, and the pulleys 4 can be used for the detection device to slide on the line. The operator installs the pulley 4 on the line. Other auxiliary tools such as ropes are used to move the detection device along the line, so that the detection device can accurately reach the 5 places of the tension clamp to be detected. In this ...

Embodiment 2

[0046] This embodiment shows a detection method of overhead line tension clamp 5, and the required tools include X-ray detection device, lifting device, insulating rope and insulation ladder, and the X-ray detection device adopts any of claims 1 to 4. The X-ray detection device described in one item, the X-ray detection device is equipped with a wireless remote controller, and the steps of the detection method are as follows:

[0047] Firstly, the workers on the platform wear shielding clothing and carry an insulating ladder, and climb the tower to the phase line to be tested. The operator on the tower fixes one end of the insulating ladder to the line, and releases the other end of the insulating ladder to the ground. Equipotential workers Carry the lifting device by climbing the insulating soft ladder to the tension clamp 5 to be tested, and fix the lifting device on the wire close to the tension clamp 5, wherein the lifting device is composed of an insulating pulley and an i...

Embodiment 3

[0051] The main difference between this embodiment and Embodiment 2 is that the voltage level of the tension clamp 5 in this embodiment is greater than 500KV, and the equipotential operators in this embodiment adopt the method of "crossing two shorts and three" along the tension line. The insulator strings enter a strong electric field, and the equipotential workers step on the adjacent steel caps of one string of insulators with both feet, and hold the adjacent steel caps of the other string of insulators with both hands, moving hands and feet on the insulator strings one by one .

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Abstract

The invention provides an X-ray detection device for an overhead line strain clamp. The device comprises an X-ray source, a detector and a bracket; the X-ray source and the detector are respectively arranged at two ends of the bracket, the X-ray source irradiates X-rays onto the detector, and a strain clamp to be detected is positioned in an X-ray irradiation area on the surface of the detector. Pulleys allowing the detection device to slide on a line are arranged on the two sides of the detector. The X-ray detection device has the advantage that the X-ray detection device can slide on a line.In addition, the invention also discloses a detection method of the strain clamp of the overhead line.

Description

【Technical field】 [0001] The invention relates to an X-ray detection device and a detection method for tension clamps of overhead lines, and belongs to the technical field of electric power detection equipment. 【Background technique】 [0002] Overhead lines are currently the most important power equipment for long-distance transmission of electric energy, featuring high voltage levels and large currents. Connecting fittings are an important part of overhead lines, and their quality directly affects whether the transmission line can work normally and whether the power grid can operate safely and reliably. The tension clamp is a metal tool that fixes the wire, bears the tension of the wire, and hangs the wire to the tension string or the tower. Once an accident occurs, it will directly cause the wire to be disconnected and the line to be out of service, causing greater damage to the power grid company. Economic losses can also cause serious social impacts. Therefore, the cri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/00H02G1/02
CPCG01N23/00H02G1/02
Inventor 方玉群崔建业秦威南郑宏伟顾浩傅卓君蒋卫东赵凯美张帆朱凯
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JINHUA POWER SUPPLY CO