Visual non-destructive testing
Using X-ray digital imaging DR technology to visualize non-destructive inspection of typical defects of GIS equipment, can realize the intuitive, reliable and accurate evaluation of the internal situation of GIS equipment without disassembling the equipment and damaging the environment.
Non-destructive inspection of internal foreign matter visualization
(1) Visual non-destructive inspection of tool foreign body defects
(2) Defects of foreign objects in assembly parts: This defect is to place two metal gaskets, one bolt, one nut, and one spring leaf on the bottom of the GIS tank. It is used to simulate foreign object defects in assembly parts and assembly arrangement The situation and X-ray transillumination picture are shown in the figure
It can be clearly seen from FIG. 2 that the distribution of the assembly inside the GIS equipment has verified the feasibility of the X-ray digital imaging technology to visually and non-destructively detect the foreign objects in the assembly of the GIS equipment.
(3) Defects of scattered foreign matter in desiccant
Visual non-destructive inspection of internal assembly defects
Assembly-type defects come from defects such as installation misalignment, assembly scratches, and loose running vibration. This type of defects include four typical defects, such as loose screws, loose shielding cover, inadequate closing of the isolating switch, and inadequate opening of the isolating switch.
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Visual non-destructive inspection of internal material defects
Material defects are caused by improper installation, external forces, tolerances, tolerances, external forces, vibration and wear. This type of defect includes three typical defects, such as metal particles scattered in the cavity near the contact, supporting bubbles inside the insulator, and loosening of the operating insulating rod.
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