Offline inspection system for apparent surface defects of nuclear fuel pellets

Abstract

The invention discloses an offline inspection system for apparent surface defects of nuclear fuel pellets. The offline inspection system comprises a feeding pushing mechanism, a peripheral surface rotation detection mechanism, a material stirring mechanism, an end surface detection mechanism, a discharging pre-arrangement mechanism and a discharging mechanism, wherein the feeding pushing mechanismis used for feeding the whole pellets and conveying the pellets row by row; the peripheral surface rotation detection mechanism is in butt joint with the feeding pushing mechanism; the material stirring mechanism is in butt joint with the peripheral surface rotation detection mechanism and is used for transversely stirring the pellets; the end surface detection mechanism is in butt joint with thematerial stirring mechanism; the discharging pre-arrangement mechanism is in butt joint with the end surface detection mechanism; and the discharging mechanism is in butt joint with the discharging pre-arrangement mechanism and is used for arranging the pellets into a disc. According to the offline inspection system, the peripheral surfaces and the end surfaces of the nuclear fuel pellets are sequentially detected in a segmented manner by utilizing an assembly line type conveying manner, and the feeding pushing mechanism is utilized for realizing feeding of the whole disc and pushing the pellets in rows, so that the integration of comprehensive apparent defect detection of the pellets and assembly line transmission is realized, and the apparent defect detection efficiency of the pellets is effectively improved; and the discharging mechanism is further utilized for re-disc the detected pellets, so that the integrity of the detection process is guaranteed, and the subsequent treatment and use of the pellets are facilitated.

Description

technical field [0001] The invention relates to the technical field of appearance detection of nuclear fuel pellets, and relates to an off-line inspection system for appearance surface defects of nuclear fuel pellets. Background technique [0002] The nuclear fuel pellet is the core part of the nuclear fuel element, generally a small cylindrical block. After the nuclear fuel pellets are made, the surface needs to be inspected to avoid appearance defects such as lack of material, excess material, and cracks. Due to the small size of the pellet itself, it is very inconvenient to detect it by single grabbing. Therefore, automatic assembly line inspection is an effective inspection method, but it is difficult to comprehensively inspect its appearance at one time on assembly line equipment, and Most of the nuclear fuel pellets are arranged on the whole plate in the off-line state. How to accurately transport and detect the pellets placed on the whole plate is also a problem wort...

AI Technical Summary

Problems solved by technology

Due to the small size of the pellet itself, it is very inconvenient to detect it by single grabbing. Therefore, automatic assembly line inspection is an effective inspection method, but it is difficult to comprehensively inspect its appearance at one time on assembly line equipment, and Most of the nuclear fuel pellets are arranged on the whole plate in the off-line state. How to accurately transport and detect the pellets placed on the whole plate is also a problem worthy of consideration by those skilled in the art.

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