High-temperature and high-pressure water vapor environment structural material testing device

Abstract

The invention discloses a high-temperature and high-pressure water vapor environment structural material testing device. The testing device is provided with a pipe, wherein high-temperature water flows inside and outside the pipe. The testing device comprises an autoclave, a test tube loading system, a loop system inside a test tube, a loop system outside the test tube, a controlling and measuring system and a data acquisition and processing system. The testing device which can be used for simulating the temperature, pressure, flow velocity, water chemical conditions, load and the like of a high-temperature and high-pressure water vapor environment structural material is applicable to tests in the aspects of corrosion, stress corrosion, corrosion fatigue, flow accelerated corrosion and the like of tubular specimens through complex flow and complex load coupling effect. Especially, the working conditions of different flow, different inner-side and outer-side temperatures, different pressures and different water chemistry in a heat exchange tube of a steam generator in a nuclear reaction pressurized-water reactor can be simulated to carry out related testing and research on the heat exchange tube.

Description

[0001] technical field [0002] The invention belongs to the field of test devices for simulating high-temperature and high-pressure water vapor environments, and relates to a test device capable of simulating temperature, pressure, flow velocity, water chemical conditions and loads and other high-temperature and high-pressure water vapor environment structural materials, and is suitable for complex flow and complex load coupling. Tests on corrosion, stress corrosion, corrosion fatigue and flow-promoted corrosion of pipe samples, in particular, can simulate different flows, different inner and outer temperatures, different pressures and different Under the working conditions of water chemistry, relevant tests and researches are carried out on the heat exchange tubes. Background technique [0003] With the rapid development of my country's nuclear power and thermal power industries, their safety has become an important issue of widespread concern to the country and the public...

AI Technical Summary

Problems solved by technology

But their limitations in mechanistic studies are the main reason why stress corrosion, high temperature corrosion cracking and other failure modes have not been addressed for 20 years

However, most of the key materials used in power plants (nuclear power plants and thermal power plants) exist in the form of pipes. Due to the shape effect, the general-purpose autoclave slow stretching equipment cannot make more accurate tests and evaluations for pipe samples. In particular, so far So far, no high-temperature and high-pressure water vapor environment test platform for stress corrosion of steam generator heat exchange tubes has been established in the world, which limits the relatively accurate life prediction of corresponding components.

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