Cladding tube internal pressure bursting test device and method

Abstract

The invention relates to a cladding tube internal pressure bursting test device. The device comprises a first medium source, a second medium source, a vacuum heating device, a cladding tube arranged in the vacuum heating device, a pressure medium conveying pipeline, at least one temperature probe which is arranged on the vacuum heating device and detects the cladding tube temperature, a pressure release device arranged on the vacuum heating device and a control device, wherein the pressure medium conveying pipeline is connected with the first medium source and the second medium source and communicated with the cladding tube and conveys pressure media to the cladding tube, and the control device is connected with the vacuum heating device and the pressure medium conveying pipeline and controls the vacuum heating device to heat and controls the pressure medium conveying pipeline to convey the media; the control device comprises a first mode of controlling the pressure medium conveying pipeline to convey the first media at first temperature and a second mode of controlling the pressure conveying pipeline to convey the second media. The cladding tube internal pressure bursting test device can be used for simulating and measuring the loading capacity of the cladding tube in the working condition that a nuclear power plant has an accident in the high temperature and high pressure environment.

Description

technical field [0001] The present invention relates to a testing device, more specifically, to a testing device and a testing method thereof. Background technique [0002] The nuclear fuel cladding tube is the first barrier for nuclear reactor safety, which can ensure that it contains the radioactive fission products produced by nuclear fission of pellets under long-term operating conditions without leakage of radioactive substances. Zirconium alloy cladding tube has the characteristics of high strength, good corrosion resistance, and low neutron absorption cross section, and is the most widely used cladding material for nuclear power plants. However, the zirconium alloy cladding tube also has its own defects. When a power station loses water in the primary circuit or a power outage occurs in the power station, the temperature of the cladding tube rises rapidly, and a violent chemical reaction occurs with water vapor, and the hydrogen produced accumulates in the safe There...

AI Technical Summary

Problems solved by technology

It can be seen that the current internal pressure blasting equipment is far from meeting the test parameter requirements for accident-tolerant fuel cladding tubes. The main reason is that the blasting test machine in the nuclear industry is a single liquid medium pressurized blasting system, and the heating temperature of the heating furnace is low. The pressure medium is high-temperature silicone oil, which cannot achieve high-temperature (>400°C) internal pressure blasting

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