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126 kV three-phase common-box basin-type insulator interface defect detection method

A basin-type insulator and interface defect technology, which is applied to measuring devices, analyzing solids using sound waves/ultrasonic waves/infrasonic waves, and using sound waves/ultrasonic waves/infrasonic waves for material analysis, etc. It can solve the problems of low detection costs, bulky equipment, and high prices. problems, to achieve the effect of no X-ray radiation hazard, high detection accuracy and low detection cost

Active Publication Date: 2022-01-07
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID +1
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Problems solved by technology

[0004] The invention provides a 126kV three-phase common box basin-type insulator interface defect detection method, which is used to solve the problem that the detection of basin-type insulator interface defects using X-ray imaging method has low sensitivity to defects with small width and the equipment is bulky , not easy to carry, expensive, X-rays have technical problems of radiation hazards to the human body, and have the advantages of low detection cost, high detection accuracy, small size, and no X-ray radiation hazards to the human body

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  • 126 kV three-phase common-box basin-type insulator interface defect detection method
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  • 126 kV three-phase common-box basin-type insulator interface defect detection method

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Embodiment Construction

[0043] In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] For ease of understanding, see figure 1 , the present invention provides an embodiment of a 126kV three-phase common box basin-type insulator interface defect detection method, including:

[0045] Step 101 , building a basin-type insulator interface defect detection platform based on ultrasonic longitudinal wave reflection detection. ...

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Abstract

The invention discloses a 126kV three-phase common-box basin-type insulator interface defect detection method, which comprises the following steps of: performing defect detection on a central conductor-epoxy resin interface of a detected 126kV three-phase common-box basin-type insulator by utilizing an ultrasonic longitudinal wave reflection detection system, establishing an interface defect ultrasonic propagation model, taking an amplitude as a defect characterization quantity, enabling the ultrasonic probe to scan along the detection path, determining the depth of the interface defect, obtaining two-dimensional and three-dimensional images of the interface defect through data three-dimensional reconstruction, determining then the size of the interface defect. The method can be used for factory detection of the basin-type insulator and can also be suitable for field assembly detection of the basin-type insulator. The technical problems that when an X-ray imaging method is used for detecting the interface defects of the basin-type insulator, the sensitivity to the defects with the small width is not high, equipment is large in size, inconvenient to carry and high in price, and X-rays have radiative harm to the human body are solved. The method has the advantages of low detection cost, high detection precision, small size and no X-ray radiation harm to a human body.

Description

technical field [0001] The invention relates to the technical field of detection of interface defects of basin-type insulators, in particular to a detection method of interface defects of basin-type insulators of 126kV three-phase common box. Background technique [0002] Basin insulator is a key component of gas insulated metal-enclosed switchgear (GIS), consisting of metal inserts, epoxy insulation and metal flanges, which play the role of electrical insulation, isolation of gas chambers, and support conductors. At the same time, the basin insulator is also the weakest insulation link in the gas-insulated metal-enclosed switchgear. The faults caused by basin insulators account for a considerable proportion of the insulation faults of gas-insulated metal-enclosed switchgear. Among them, the interface defects at the interface between the central conductor of the basin insulator and the epoxy insulating material are mainly due to artificial faults during the assembly process....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/06G01N29/24G01N29/28
CPCG01N29/0654G01N29/2443G01N29/28G01N2291/024G01N2291/0289G01N2291/2697G01N2291/102
Inventor 杨旭张长虹黎卫国黄忠康高超周福升黄若栋熊佳明杨芸王国利郑尧
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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