Probe Swing Mechanism for Ultrasonic Inspection of Control Rod Drive Mechanism ω Welds

Abstract

The invention belongs to an oscillating mechanism, and specifically discloses a probe oscillating mechanism for a control rod driving mechanism Ω welding seam ultrasonic inspection, which includes a servo motor and a gear transmission mechanism connected to the output shaft of the servo motor, and it also includes a The guide rail plate on the gear transmission mechanism and the probe swinging block installed on the guide rail plate have an arc-shaped guide rail chute on the guide rail plate, and the probe swing block is installed on the arc-shaped guide rail chute through a sliding pin and a lever. There is also an arc-shaped groove on the swing block, and a probe clamp for clamping the ultrasonic probe is installed in the arc-shaped groove. The output shaft of the transmission mechanism is fixedly connected with the shift fork, and the front end of the shift fork clamps the shift lever, so that the shift fork The toggle drives the lever, together with the probe swing block, to slide along the chute of the arc-shaped guide rail, thereby driving the ultrasonic probe to rotate around the Ω weld in the circumferential direction. The oscillating mechanism of the present invention can realize continuous ultrasonic full inspection on the circumferential direction of the Ω weld seam.

Description

technical field [0001] The invention belongs to an oscillating mechanism, in particular to a probe oscillating mechanism used for ultrasonic inspection of a control rod driving mechanism Ω welding seam. Background technique [0002] The structure of the upper part of the control rod drive mechanism Ω sealing weld I (referred to as Ω weld) is a stainless steel thin-walled tube with an outer diameter of Φ11.4mm and a wall thickness of 2.3mm. The materials are 0Cr18Ni9Ti and 1Cr18Ni9Ti. Due to the special structure of the weld, the diameter of the outer circle is small, the wall thickness is very thin, the shape is circular, and there is a driving mechanism in the middle of the weld, which makes the inspection space narrow. Routine ultrasonography cannot be performed. [0003] Due to the limitation of the position of the Ω weld I, at present, it is generally used to arrange multiple probes in the circumferential direction of the control rod drive mechanism to realize the full ...

AI Technical Summary

Problems solved by technology

Routine ultrasonography cannot be performed

[0003] Due to the limitation of the position of the Ω weld I, at present, it is generally used to arrange multiple probes in the circumferential direction of the control rod drive mechanism to realize the full inspection of the cross section by arranging multiple probes in the circumferential direction of the upper Ω weld I. The inspection position of the probes in the circumferential direction of the Ω weld I is still discontinuous, and it is impossible to realize continuous full inspection in the true sense.

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