Intelligent automatic ultrasonic detection system and method for in-service basin-type insulators

A basin-type insulator, ultrasonic testing technology, used in the analysis of solids using sonic/ultrasonic/infrasonic waves, material analysis using sonic/ultrasonic/infrasonic waves, measurement devices, etc. , to achieve the effect of rapid detection and positioning

Active Publication Date: 2019-10-25
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +3
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Problems solved by technology

[0004] Ultrasonic testing technology is an important means of detecting internal defects in solid materials, but for pot insulators, there are several difficulties: (1) There are metal inserts, vent holes and other structures inside pot insulators, and these structures will interfere with the transmission of ultrasonic signals Reflections and structural interference signals appear, which affect defect discrimination; (2) There are various types of pot insulators, and the internal structure and outer diameter are all changing. Manual analysis alone has problems such as low efficiency, inaccurate positioning, and missed judgments. On-site detection requires fast, accurate and reliable evaluation methods; (3) The material of the pot insulator is generally a composite material system composed of epoxy resin and aluminum oxide particles, which has a large attenuation of ultrasonic waves. When the diameter is large, the ultrasonic wave must have sufficient energy

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  • Intelligent automatic ultrasonic detection system and method for in-service basin-type insulators
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  • Intelligent automatic ultrasonic detection system and method for in-service basin-type insulators

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Embodiment 1

[0029] This embodiment provides an intelligent automatic ultrasonic detection system for pot insulators in service, such as figure 1 As shown, the intelligent automatic ultrasonic testing system is composed of a testing process library, an adaptive data acquisition module and an intelligent data analysis module; Provide the process parameters that need to be set, and provide the geometric structure parameters of the insulator for the intelligent data analysis module; the self-adaptive data acquisition module provides detection data for the intelligent data analysis module; Corresponding relationship of data to realize automatic location of defects;

[0030] like figure 2 As shown, the adaptive acquisition module includes a high-energy ultrasonic pulse transceiver device 3, an automatic scanning device 5, an ultrasonic transducer 6, a data acquisition card 2, a control card 4 and a computer 1, and the computer 1 is connected to the data acquisition device respectively. The c...

Embodiment 2

[0032] This embodiment provides an intelligent automatic ultrasonic detection method for pot insulators in service, which uses the intelligent automatic ultrasonic detection system described in Embodiment 1 to detect internal defects of pot insulators in service, such as figure 2 As shown, the detection method includes the following steps:

[0033] (1) Measure the specific detection object, obtain the diameter of the pot insulator 7, the position coordinates and diameter of the central insert 8, the position coordinates and diameter of the through hole 9, and the position coordinates and diameter of all threaded holes 10;

[0034] (2) Select the structural form of the pot insulator from the detection process library, and import the measured geometric parameters to form a two-dimensional cross-sectional view of the detection object. According to the main sound line of the transducer and the threaded hole representing the interior of the pot insulator , the circular intersectio...

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Abstract

The invention discloses an intelligent automatic ultrasonic detection system and method for in-service basin-type insulators. The detection system comprises a detection process library, a self-adaptive data acquisition module and an intelligent data analysis module; the detection process library comprises an insulator component with a typical structure and a common detection process, provides process parameters required to be set for the self-adaptive data acquisition module, and provides geometric structure parameters of the insulators for the intelligent data analysis module; the self-adaptive data acquisition module provides detection data for the intelligent data analysis module; the intelligent data analysis module realizes automatic positioning of defects according to the corresponding relation between the detection geometric structure parameters and the detection data; and the intelligent automatic ultrasonic detection system is used for detecting the internal defects of the in-service basin-type insulators. The invention realizes the accurate and rapid detection and positioning of the defects of air holes, cracks and the like in the basin-type insulators.

Description

technical field [0001] The invention belongs to the technical field of online safety monitoring of electrical insulation equipment, in particular to an intelligent automatic ultrasonic detection system and method for internal defects of in-service pot insulators. Background technique [0002] Basin insulator is an important part of substation gas-insulated metal-enclosed switchgear (GIS), which plays an important role in isolating adjacent gas chambers, supporting conductors and insulating, and is the basis for ensuring safe and reliable operation of the power grid. Due to the existence of internal defects of insulators and irregular on-site installation and fastening operations, accidents of insulator ruptures and GIS air leakage occur frequently, which greatly affects the safe and stable operation of power grid equipment. [0003] At present, there are two main types of detection of internal defects of pot insulators: ex-factory inspection and in-service inspection. The f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/06G01N29/04G01N29/265
CPCG01N29/043G01N29/048G01N29/069G01N29/265G01N2291/023G01N2291/0289G01N2291/044
Inventor 罗宏建乔亚霞张俊张杰张浩赵洲峰陈胤桢梅简周宇通裘吕超鲁旷达周正强周进郑宏晔胡洁梓
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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