Two-dimensional simulation monitoring method and device used for replacing nuclear rods

Abstract

The invention discloses a two-dimensional simulation monitoring method used for replacing nuclear rods. The two-dimensional simulation monitoring method is used for nuclear rod replacing monitoring, and comprises following steps: (1) two-dimensional data of nuclear rod replacing related equipment is acquired, and nuclear rod replacing simulation images are obtained based on the two-dimensional data; (2) encoder information detected by a pull wire encoder of a new fuel elevator is acquired in real time, the encoder information is converted into height data of the new fuel elevator, and the nuclear rod replacing simulation images are updated based on the height data; and (3) the nuclear rod replacing simulation images are displayed. Compared with the prior art, the two-dimensional simulation monitoring method enables operators to know about specific processes of nuclear rod replacing via the nuclear rod replacing simulation images, security of nuclear rod replacing is improved. The invention also discloses a corresponding two-dimensional simulation monitoring device used for replacing nuclear rods.

Description

Technical field [0001] The invention relates to the field of nuclear power generation, in particular to the monitoring of replacing nuclear fuel rods in the repair work of nuclear fuel assemblies in nuclear power stations. Background technique [0002] The nuclear fuel assembly consists of a nuclear fuel rod, a nuclear fuel assembly grid, a compression spring, an upper tube seat and a lower tube seat. The fuel cladding contains the nuclear fuel rods, isolates the fuel from the coolant, and contains the fission gas. 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, nuclear fuel rods may cause deformation and rupture of the fuel cladding, leading to increased radioactivity of the primary circuit coolant. Therefore, necessary inspections of nuclear fuel assemblies are required. When the nuclear fuel assembly is damaged, replace the damaged nuclear fue...

AI Technical Summary

Problems solved by technology

Since the operator must monitor and control the specific station for nuclear fuel assembly replacement by viewing height data and video images, when the operator is inexperienced or negligent, it is easy to fail to respond in time when the replacement process fails, resulting in misjudgment. When the new fuel lifter 30 controls the nuclear fuel rod held by the fuel rod tool 40 to reach the lower end of the nuclear fuel assembly 50 or break away from the upper end of the nuclear fuel assembly 50, the action of the new fuel lifter 30 cannot be stopped in time, thereby causing damage to the nuclear fuel assembly 50 or affecting repair efficiency.

Images