Device and method for measuring and calibrating underwater bending-torsional deformation of fuel assembly

Abstract

The invention provides a fuel assembly underwater bending-torsional deformation measurement and calibration device and method. The device comprises a standard mechanism, a connecting mechanism, a calibration mechanism and a control mechanism, wherein the standard mechanism is used for providing standard parts needed by calibration, the connecting mechanism is used for achieving integrated installation, the calibration mechanism is arranged on the connecting mechanism and used for achieving calibration work, and the control mechanism is used for controlling the calibration work; and the control mechanism is in control connection with the calibration mechanism. The invention also provides a corresponding method. The method comprises steps of integrating a plurality of groups of visual calibration units, measuring corresponding standard blocks, synchronously projecting two beams of linear laser by each group of calibration units, obtaining point cloud data after three-dimensional reconstruction, carrying out the fitting intersection of the point cloud data, and carrying out coordinate normalization of each group of measurement data according to a global calibration result; and device calibration being completed. According to the method, three-dimensional vision measurement and calibration can be directly carried out in a hoisting state of the device, underwater calibration of the fuel assembly measurement and calibration device can be rapidly and accurately realized, and the device has the characteristics of high calibration precision and high calibration speed.

Description

technical field [0001] The invention relates to the technical field of nuclear radiation safety and detection, in particular to a fuel assembly underwater bending and torsion deformation measurement and calibration device and method. Background technique [0002] The increase in economic output and the improvement of living standards will put pressure on the current energy supply. Under the background of carbon neutrality, nuclear power, as a clean, stable and efficient power source, is a necessary supplement to wind and solar power generation and is necessary to help achieve the double carbon goal. indispensable energy. Nuclear power generation is based on nuclear fission in nuclear reactors, and realizes the conversion of energy stored in atomic nuclei to electric energy. more and more attention. [0003] In recent years, the development of domestic nuclear power has been booming. The construction of nuclear power plants has been promoted in an orderly manner, and the nu...

AI Technical Summary

Problems solved by technology

But in general, most of the current maintenance work can only measure the deformation of the fuel assembly that has been placed for a long time and has been out of the station, which is time-consuming and labor-intensive. It is impossible to directly perform three-dimensional vision measurement in its hoisting state, and it is impossible to design, develop and apply Fuel assembly deformation detection system for on-site maintenance; the measurement accuracy and efficiency of fuel assembly deformation detection are low, and only one surface or a section of fuel assembly parameters can be measured at a time. To complete the overall measurement of fuel assembly deformation parameters, it takes many Change the measurement plane or move the measurement equipment again, which will bring errors to the measurement and greatly reduce the measurement efficiency

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