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Corrosion fatigue test apparatus with high temperature and high pressure circulating water

A high-temperature, high-pressure, corrosion-fatigue technology, applied in the field of material experiments, can solve problems such as complex structure, troublesome use and maintenance, and achieve the effects of simple operation, low cost and stable operation.

Active Publication Date: 2012-02-08
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a device capable of testing the corrosion fatigue performance of materials in a high-temperature and high-pressure circulating water environment, so as to solve the problems of complex structure and troublesome use and maintenance in the prior art.

Method used

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  • Corrosion fatigue test apparatus with high temperature and high pressure circulating water
  • Corrosion fatigue test apparatus with high temperature and high pressure circulating water
  • Corrosion fatigue test apparatus with high temperature and high pressure circulating water

Examples

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Effect test

Embodiment 1

[0051] The corrosion fatigue test of SA508-3 low alloy steel for domestic pressure vessels in 300℃, 10MPa, DO dissolved oxygen saturated high temperature and high pressure circulating water, the strain amplitude is 2.18%.

[0052] The experimental sample material is SA508-3 low-alloy steel for domestic nuclear power plant pressure vessels, which is processed into a smooth round bar sample with a gauge length of 16mm and a diameter of 8mm. The fatigue sample is fixed on the fixture, the autoclave is tightened, and the water storage After the tank is filled with water, introduce oxygen to keep the oxygen pressure of 0.2-0.5MPa in the water storage tank for at least 12 hours, and the dissolved oxygen in the water reaches saturation (8ppm). Start the high-temperature and high-pressure circulating water control cabinet and the fatigue machine control cabinet. Start the circulation pump to filter all the water through the ion exchange resin. When the electrical resistivity of the out...

Embodiment 2

[0054] High temperature and high pressure corrosion fatigue test of SA508-3 low alloy steel for domestic pressure vessels at a strain amplitude of 1.9%.

[0055] The experimental sample material is SA508-3 low-alloy steel for domestic nuclear power plant pressure vessels, which is processed into a smooth round bar sample with a gauge length of 16mm and a diameter of 8mm. The fatigue sample is fixed on the fixture, the autoclave is tightened, and the water storage After the tank is filled with water, introduce oxygen to keep the oxygen pressure of 0.2-0.5MPa in the water storage tank for at least 12 hours, and the dissolved oxygen in the water reaches saturation (8ppm). Start the high-temperature and high-pressure circulating water control cabinet and the fatigue machine control cabinet. Start the circulation pump to filter all the water through the ion exchange resin. When the electrical resistivity of the outlet water is greater than 10MΩ.cm, turn on the high-pressure pump and...

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Abstract

The invention belongs to the field of material testing, specifically to a corrosion fatigue test apparatus with high temperature and high pressure circulating water. With the present invention, the problems of the complex structure and the cumbersome use and maintenance in the prior art are solved. The apparatus is provided with a high temperature and high pressure circulating water system, an autoclave and a fatigue machine. The high temperature and high pressure circulating water system is communicated with the autoclave. A test sample is placed in the autoclave, and is connected with a loading part of the fatigue machine. The high temperature and high pressure circulating water system comprises a water storage tank, a circulation pump, a high pressure pump, a buffer tank, a heat exchanger, a preheater, a condenser, a back pressure valve and an ion exchange resin. An inlet of the autoclave is connected with the heat exchanger through a pipeline. The pipeline is provided with the preheater. An outlet of the autoclave is connected with the heat exchanger through the pipeline. The high temperature and high pressure circulating water system is provided for providing high temperatureand high pressure water required by the test. The fatigue machine is provided for performing fatigue loading for the test sample in the autoclave. A control system controls the high temperature and high pressure circulating water system and the fatigue machine.

Description

technical field [0001] The invention belongs to the field of material experiments, more precisely, relates to a corrosion fatigue experiment device with high temperature and high pressure circulating water. Background technique [0002] Corrosion fatigue of materials under high temperature and high pressure environment is a major problem faced by many fields, such as petroleum, chemical industry, electric power and other industries. At present, my country is in a period of great development of nuclear power. As an efficient, stable, economical and clean energy source, nuclear power has significant advantages in solving the energy crisis and improving the environment. However, a key factor restricting the rapid development of nuclear power is the safety of nuclear power plants. question. At present, commercial nuclear power plants mainly use light water reactors. Since the service environment of light water reactor nuclear power plants is high-temperature and high-pressure wa...

Claims

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Application Information

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IPC IPC(8): G01N3/08
Inventor 徐松吴欣强韩恩厚柯伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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