Nuclear fuel assembly repair detection control system

Abstract

The present invention discloses a nuclear fuel assembly repair detection control system, which is used for detecting whether a nuclear fuel assembly is damaged and repairing the monitoring during the damaged nuclear fuel assembly work, and comprises a video detection device and a monitoring device, wherein the video detection device collects the video image in the monitoring work, and the monitoring device is respectively connected with the video detection device, a pulling force sensor (on a nuclear fuel rod drawing-inserting tool) and a cable encoder (on a new fuel elevator). According to the present invention, the action of the video detection device can be controlled, the video image collected by the video detection device can be displayed, the works of the nuclear fuel rod drawing-inserting tool and the new fuel elevator can be monitored through the pulling force data and the height data detected by the pulling force sensor (on the nuclear fuel rod drawing-inserting tool) and the cable encoder (on the new fuel elevator), and the operator can be reminded in case of failure, such that the operator can complete the whole monitoring work through the monitoring device, the operation is simple, the operation safety is good, and the repair efficiency is high.

Description

technical field [0001] The invention relates to the field of nuclear power generation, in particular to the monitoring of defect detection and repair work of nuclear fuel assemblies in nuclear power stations. Background technique [0002] The nuclear fuel assembly is composed of nuclear fuel rods, nuclear fuel assembly grids, compression springs, upper end tubes and lower end tubes. The fuel cladding houses the nuclear fuel rods, isolates the fuel from the coolant, and contains fission gases. It is the first barrier to prevent the escape of radioactive particles. During normal operation, due to thermal expansion, densification, swelling, cracks and released fission gas of nuclear fuel rods, the fuel cladding may be deformed and ruptured, resulting in an increase in the radioactivity of the primary circuit coolant. Therefore, it is necessary to carry out necessary inspections on nuclear fuel assemblies. When the nuclear fuel assembly is damaged, replace the damaged nuclear ...

AI Technical Summary

Problems solved by technology

When the operator is inexperienced or unresponsive, not only misjudgment is very likely to occur, but also the nuclear fuel rod 501 held by the nuclear fuel rod pulling and inserting tool cannot be stopped in time when the new fuel lifter controls the nuclear fuel rod pulling tool to reach the lower end of the nuclear fuel assembly 500 or break away from the upper end of the nuclear fuel assembly 500. The action of the fuel elevator 400 will cause damage to the nuclear fuel assembly, and it will not respond in time when the replacement process fails, which will affect the repair efficiency

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