Ultrasonic angle adjustment device in water immersion ultrasonic testing

Abstract

The invention belongs to the technical field of water immersion ultrasonic non-destructive testing on the inner surface of tubular equipment with small inner diameter in nuclear power plants, and relates to an ultrasonic angle adjustment device in water immersion ultrasonic testing. Including water immersion probes (2, 4), the ultrasonic angle adjustment device in the water immersion method ultrasonic detection adjusts the angle of the ultrasonic waves emitted by the water immersion probes (2, 4), and also includes: mounting base (1), reflector (6 ), the motor (7), the reflector base (9); the water immersion probes (2, 4) and the reflector base (9) are fixed on the mounting base (1), and the distance is specified; the reflector base ( 9), the reflector (6) is rotatably installed, and the reflector (6) faces the water immersion probe (2, 4); and the reflector (6) is connected with the stator of the motor (7), and the reflector base ( 9) Connect with the rotor of the motor (7). The present invention uses two water immersion probes, switches the positioning and quantitative water immersion probes according to the scanning needs, and remotely adjusts the ultrasonic incident angle.

Description

technical field [0001] The invention belongs to the technical field of water immersion ultrasonic nondestructive testing on the inner surface of tubular equipment with small inner diameter in nuclear power plants. Background technique [0002] There are many small-diameter tubular equipment in nuclear power plants. According to the requirements of the ASME code, regular testing of the welds of some of the small tubular equipment is required. For equipment installed in water, water immersion ultrasonic non-destructive testing is required. [0003] For the above-mentioned equipment, some tubular equipment cannot be inspected on the outer wall due to its location, and can only be inspected from the inside. At present, the detection method usually adopted for pipe structure is contact ultrasonic detection. However, due to the small diameter of small-diameter equipment, it is difficult to arrange contact probes; similarly, due to the limitation of pipe diameter, too many probes ...

AI Technical Summary

Problems solved by technology

However, due to the small diameter of small-diameter equipment, it is difficult to arrange contact probes; similarly, due to the limitation of pipe diameter, too many probes and cables cannot be arranged; in addition, for some small pipes with relatively thick walls, the water immersion method also requires There is sufficient water sound path distance, so it is difficult to obtain good detection results by using the detection method of the existing technology

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