Device for detecting size and appearance defects of nuclear fuel rod

Abstract

The invention relates to a device for detecting the size and appearance defects of a nuclear fuel rod, which integrates the detection functions of length, symbol, welding seam and surface defects, fully optimizes the switching and transposition among procedures, the arrangement of a camera and the reasonability of scanning and acquisition under the principle of ensuring the measurement accuracy and efficiency, and improves the detection accuracy. Modular structural design and standardized model selection are adopted, redundant actions are eliminated, and the structure is simple, reasonable and compact. According to the device, the special column dividing device and the centering mechanism are designed, so that the device can be suitable for detecting fuel rods with different diameters, the feeding requirements of workpieces with different pipe diameters are met, and the device is easy to switch and convenient to maintain. The device is reasonable in process distribution, free of redundant actions, high in collection efficiency due to the fact that professional cameras are adopted for detection, and therefore the system is good in overall takt and high in operation efficiency. And all parts in contact with the fuel rod are made of special materials, so that damage and pollution to workpieces are avoided, and the production safety is ensured.

Description

technical field [0001] The invention relates to the detection technology of nuclear fuel rods, in particular to a device for detecting the size and appearance defects of nuclear fuel rods. Background technique [0002] Nuclear fuel rods are the first safety barrier of nuclear reactors, and they need to be tested before use to avoid defects such as scratches on the surface. If the defects on the surface of the nuclear fuel rod cladding and the weld surface exceed the standard, it may cause the damage of the nuclear fuel rod, which directly affects the safe operation of the nuclear power plant reactor. [0003] The functions of the existing inspection systems for the appearance and surface defects of nuclear fuel rods are relatively simple, the automation level is low, many processes need to be completed manually, the inspection efficiency is low, and the personnel workload is large; and the existing inspection equipment has complex structure and space utilization. It is low ...

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the requirements of key dimension measurement of fuel rods, character recognition of rod numbers, welds at both ends and surface defect detection of whole rods, etc.

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