Design and Application of Nuclear Power Plant Venturi Pipeline Inspection and Thickness Measurement Robot
The Venturi tube in the main feedwater system of a nuclear power plant is a throttling device that uses pressure difference to calculate the main feedwater flow rate.During operation,it is affected by the environment,and the inner wall is prone to corrosion,thinning,and even perforation and rupture.Its structural integrity directly affects the safe and stable operation of the nuclear power plant and requires regular testing.Traditional inspection methods lack accessibility.Therefore,research on inspection and thickness measurement robot technology is being conducted with the aim of achieving remotely controllable robot operations.Through comparative analysis,the use of high-definition video inspection and electromagnetic ultrasonic thickness measurement technology can effectively solve the detection problem of the pipeline in confined spaces.The design of the structure and functional modules of the inspection and thickness measurement robot has been carried out,and the control system software and hardware have been developed.An engineering prototype of the robot has also been developed and experimental tests have been conducted in simulated pipelines.Video inspections and thickness measurements of the Venturi tubes have been performed multiple times at nuclear power overhaul sites.The results indicate that the robot can flexibly and accurately reach the inspection position and works stably and reliably.The video inspection image data inside the pipeline is complete,high-definition,and the thickness measurement data is accurate.The detection results are consistent with the actual engineering situation.The development and successful application of this robot provide a robot solution for video inspection and thickness measurement in narrow and inaccessible areas,which can promote technological progress in the field of non-destructive testing.
nuclear power plantwenturi tubecheckthickness measurementrobot
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