Non-destructive detection method for detecting crimping quality of tension-resistant wire clamp by utilizing ultrasonic phased array

A technology of ultrasonic phased array and strain clamp, which is applied in the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, material analysis using sound waves/ultrasonic waves/infrasonic waves, and measuring devices. It can solve the problem of crimping position and crimping quality detection Difficulties and other problems, to achieve the effect of improving work efficiency, ensuring safe operation, and clear images
CN107796877AActive Publication Date: 2018-03-13STATE GRID LIAONING ELECTRIC POWER RES INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID LIAONING ELECTRIC POWER RES INST
Publication Date
2018-03-13

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Abstract

The invention relates to the technical field of non-destructive detection of power transmission lines, in particular to a non-destructive detection method for detecting the crimping quality of a compression type tension-resistant wire clamp by utilizing an ultrasonic phased array. The non-destructive detection method comprises the following specific implementation steps: selecting a crimping planeafter the completion of tension-resistant wire clamp crimping as a detection surface; setting workpiece parameters of a detected tension-resistant wire clamp joint and adjusting an ultrasonic phasedarray instrument; putting a probe on the crimping plane, adjusting an instrument gain value and the display scope by adopting a phased array longitudinal wave detection method, so that a fan scanningimage is clear, and an internal structure of a crimping joint is presented in the form of the image; obtaining and preserving the clear image, and analyzing and judging the crimping situations. The non-destructive detection method provided by the invention has the benefits that the online detection can be performed, and the detection quality accuracy is high, so that the working efficiency is significantly improved, and the safe operation of a power grid is guaranteed; the ultrasonic phased array can directly reflect the crimping quality of the tension-resistant wire clamp through the visual image without moving the probe, and detection results are displayed in the form of the image, so that clear and visual effects are realized; the non-destructive detection method is simple and suitablefor field application.
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Description

technical field

[0001] The invention relates to the technical field of non-destructive testing of power transmission lines, in particular to a non-destructive testing method for testing the crimping quality of compressed strain clamps by using ultrasonic phased arrays. Background technique

[0002] Tension clamps are mainly used for the upper corners, splices and terminal connections of overhead lines, distribution lines, substations and distribution devices of power plants. The main components of the compression type strain clamp are the aluminum sleeve and the steel anchor. In the installation of the strain clamp, the aluminum sleeve and the steel anchor play different roles. The role of the steel anchor is to connect the steel core of the steel-reinforced aluminum stranded wire, and then pass through the aluminum sleeve, and apply pressure to cause plastic deformation of the sleeve, thereby making the connection and fixing of the wire and the clamp, so that the clamp and ...

Claims

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