Ultrasonic automatic scanning device for large-aperture pipeline in nuclear power plant

Abstract

The invention relates to an ultrasonic automatic scanning device for a large-aperture pipeline in a nuclear power plant. The ultrasonic automatic scanning device comprises a mechanical scanning part, an electric control part and a pipeline part, wherein the mechanical scanning part comprises a circumferential guide rail part, a circumferential moving module and an axial moving module; the circumferential guide rail part comprises an annular body and a plurality of supporting legs which are mounted on the inner side of the annular body and are capable of moving along the radial direction of the annular body; the circumferential moving module comprises a circumferential guide rail fixed on the annular body, an arc-shaped fixed plate which is detachably mounted on the circumferential guide rail and is capable of moving along the circumferential guide rail, and a circumferential driving motor which is fixed at one end of the arc-shaped fixed plate and is meshed with the circumferential guide rail; the axial moving module comprises an arc-shaped frame detachably mounted on the arc-shaped fixed plate, a probe disk which is parallel to the arc-shaped fixed plate, can slide in the arc-shaped frame and is used for fixing ultrasonic probes, an axial driving motor fixed on the arc-shaped frame, and a transmission mechanism which is connected with the axial driving motor and is used for driving the probe disk. On one hand, the mechanical scanning part is modularized, so that the occupation space can be effectively reduced, and the mechanical scanning part can conveniently move and be mounted in the narrow space of the nuclear power plant; on the other hand, the mechanical scanning part is in a detachable quick connection locking mode, so that the mounting time is shortened.

Description

technical field [0001] The invention relates to an ultrasonic scanning device, in particular to an ultrasonic automatic scanning device for a large-diameter pipeline of a nuclear power plant. Background technique [0002] Pipelines are widely used in industries such as petroleum, chemical industry, metallurgy, pharmaceuticals, energy, and environmental protection. They are responsible for the transportation of high-temperature, high-pressure, flammable, explosive, and toxic media. Playing an important role in core heat medium circulation, it is the heart and key equipment of the entire nuclear power plant, and its life and safe operation directly determine the usable life of the entire nuclear power plant. In order to fully understand and judge the material status of the reactor pressure vessel and other circuit system components, the in-service inspection specifications and inspection program of nuclear power plants put forward mandatory requirements for the application of ...

AI Technical Summary

Problems solved by technology

However, the basic carrier of this detection system is a 17-seat Iveco car, and the mechanical scanner on board weighs more than 20kg, which is suitable for the detection of large-diameter pipelines in the field. The material requirements are extremely high, and it is required that no damage to other equipment can be caused during the detection process, so the above detection system is not applicable

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