Auxiliary positioning system and method of evaporator plate pipe locator based on visual identity

Abstract

The invention relates to an auxiliary positioning system of an evaporator plate pipe locator based on visual identity. The system comprises a network camera, a signal transmission system and an acquisition analysis computer; the network camera is arranged in a water chamber of an evaporator and shoots images of a plate pipe of the evaporator and the evaporator plate pipe locator on the plate pipe of the evaporator in real time; the signal transmission system is arranged between the network camera and the acquisition analysis computer, and sends the images shot by the network camera to the acquisition analysis computer; the acquisition analysis computer is arranged in an acquisition container out of a nuclear island, conducts real-time analysis on the images shot by the network camera so as to obtain coordinates of each pipe hole in the plate pipe, and displays the images superimposed and labeled with the coordinates of each pipe hole through a camera of the acquisition analysis computer. The auxiliary positioning system of the evaporator plate pipe locator based on the visual identity can automatically display the position coordinates on the plate pipe of the evaporator plate pipe locator in real time, can improve checking efficiency, and reduces possibilities of errors of people.

Description

technical field [0001] The invention relates to a positioning system and method based on visual identification, which assists in positioning the position of an evaporator tube plate locator on the tube plate of the evaporator when performing eddy current inspection on a steam generator heat transfer tube of a nuclear power plant. Background technique [0002] The main function of the steam generator in a nuclear power plant is to transfer the heat in the coolant of the primary circuit to the feed water of the secondary circuit as a heat exchange device, so that it can generate saturated steam to supply the power plant of the secondary circuit to generate electric energy. As a device connecting the primary circuit and the secondary circuit, the steam generator constitutes a second protective barrier between the primary and secondary circuits to prevent radioactive leakage. Specifically, the tube plate and inverted U-shaped tube of the steam generator are reactor A component o...

AI Technical Summary

Problems solved by technology

This is a method of post-event supervision, which cannot be used for real-time positioning, and each positioning takes a long time. In order to ensure the efficiency of on-site inspection, the position is usually confirmed every once in a while.

Although this can speed up the inspection process to a certain extent, there will still be situations where all the data collected between two confirmed positions will be invalidated due to position confirmation errors

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