Test device for simulating nuclear reactor fuel rod

Abstract

The invention discloses a test device for simulating a nuclear reactor fuel rod. The test device for simulating a nuclear reactor fuel rod comprises a cladding pipe, an insulating pipe and a heating pipe. The cladding pipe sleeves the insulating pipe, and the inner circumferential surface of the cladding pipe is in contact with the outer circumferential surface of the insulating pipe. The heatingpipe is sleeved with the insulating pipe, and the inner circumferential surface of the insulating pipe makes contact with the outer circumferential surface of the heating pipe. The heating pipe is provided with a heating cavity, the heating pipe is provided with a gas channel communicated with the heating cavity, the gas channel penetrates through the heating pipe in the radial direction of the heating pipe, one end of the heating cavity is closed, the other end of the heating cavity is suitable for being communicated with an air source, and the heating pipe is suitable for being connected with external power supply equipment through a first wire and a second wire. The test device for simulating a nuclear reactor fuel rod can utilize electric heating to simulate the performance of a fuel rod to carry out a pressurization simulation test.

Description

technical field [0001] The invention relates to the technical field of simulation tests, in particular to a test device for simulating nuclear reactor fuel rods. Background technique [0002] Under the accident conditions of the PWR nuclear power plant, the fuel rods in the cladding tube expand rapidly, and the fission gas generates a large internal pressure in the tube. At the same time, the cladding tube also produces large axial stress under the action of swelling deformation and transient thermal stress, and the cladding tube undergoes bending deformation, swelling, brittle fracture or blasting, which poses a serious threat to nuclear safety. [0003] In order to carry out the pressure test on the cladding tube under accident conditions, a test device simulating the fuel core rod in the cladding tube is needed. Contents of the invention [0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. [0005]...

AI Technical Summary

Problems solved by technology

At the same time, the cladding tube also produces large axial stress under the action of swelling deformation, transient thermal stress, etc., and the cladding tube undergoes bending deformation, swelling, brittle fracture or blasting, which poses a serious threat to nuclear safety.

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