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A reference test block for ultrasonic phased array testing of high-voltage post porcelain insulators

A technology of pillar porcelain insulator and ultrasonic phased array, which is applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, which can solve the problems of low false positive rate and other issues

Active Publication Date: 2018-08-21
STATE GRID CORP OF CHINA +2
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of no reference test block for ultrasonic phased array detection of porcelain insulators by proposing a special reference test block for ultrasonic phased array detection of high-voltage pillar porcelain insulators. Advantages of intuition, high precision and low misjudgment rate

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  • A reference test block for ultrasonic phased array testing of high-voltage post porcelain insulators
  • A reference test block for ultrasonic phased array testing of high-voltage post porcelain insulators
  • A reference test block for ultrasonic phased array testing of high-voltage post porcelain insulators

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Embodiment Construction

[0024] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0025] In ultrasonic testing technology, the method of comparing with known artificial reflectors is usually used to determine the defect position and size of the inspected workpiece. The development of ultrasonic testing technology is always inseparable from the design and manufacture of reference test blocks. Ultrasonic phase control The same is true for array detection. Therefore, it is necessary to develop and manufacture corresponding reference test blocks for the ultrasonic phased array detection method of porcelain bottles to determine the sensitivity of flaw detection and evaluate the size of defects, and to conduct comprehensive tests on the performance of i...

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Abstract

The invention discloses a special reference test block for detecting a high-voltage strut porcelain insulator ultrasonic phased array. According to the reference test block, through holes with the diameters Phi of 1mm and crescent grooves with the depths of 3mm, 4mm and 5mm serve as detection system debugging artificial-defect reflectors. The reference test block has the advantages that during instrument debugging, internal defects, surface defects and near surface defects are displayed at the same time and the debugging is accomplished once; the crescent groove reflectors conform to real crack characteristics; no simulated porcelain bottle arc surface is adopted and radian compensation is performed by virtue of an actual measurement table, so that the defect that various specifications of porcelain bottles need various specifications of test blocks to perform instrument adjustment respectively in actual detection work is overcome, and the working efficiency is enhanced greatly. With the special reference test block, the problem of no special reference test block for the detection on the high-voltage strut porcelain insulator ultrasonic phased array is solved.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing of materials, in particular to a special reference block for ultrasonic phased array testing of high-voltage post porcelain insulators (hereinafter referred to as "porcelain bottles"). Background technique [0002] There is no special reference test block for ultrasonic phased array detection of porcelain bottles so far. The test block designed, developed and manufactured by the present invention is mainly used for performance calibration of the detection system and evaluation of detection results for this work. The ultrasonic phased array is used to detect the longitudinal wave fan-shaped scanning method to detect the internal defects, surface and near-surface defects within the detection range of the "porcelain bottle". [0003] At present, there are no related products available for ultrasonic phased array detection of internal defects, surface and near-surface defects of porcel...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04
Inventor 张昕李军苗兴袁芳杨景健高健杨占君李玉鹏王斌赵明忠白涛孙小平席家福王欣董开松
Owner STATE GRID CORP OF CHINA
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