Stream corrosion fatigue test system

Abstract

The present invention belongs to the technical field of material performance testing, and relates to a steam corrosion fatigue test system, which comprises a fatigue tester and a fatigue loading clamper arranged on the fatigue tester, and further comprises a steam environment sealing cylinder, a heating furnace and a steam generation box, wherein the fatigue tester is used for providing a fatigue load and applying the fatigue load onto a fatigue specimen through the fatigue loading clamper so as to test, the steam environment sealing cylinder is wrapped on the outer side of the fatigue specimen and is used for providing a sealed steam environment for the fatigue specimen, the heating furnace is used for carrying out secondary heating on the steam in the steam environment sealing cylinder, and the steam generation box is used for providing steam to the steam environment sealing cylinder. According to the present invention, the system can meet the requirement of the stimulation of the wide steam environment temperature range in petroleum, chemical industry, electric power and other industrial fields, the accurate temperature control can be achieved, and the support is provided for the material selection design and the service life evaluation of the equipment servicing in the steam corrosion environment under the alternating load effect.

Description

technical field [0001] The invention belongs to the technical field of material performance testing, and relates to a steam corrosion fatigue test system. Background technique [0002] In petroleum, chemical, electric power and other industrial fields, equipment failure accidents caused by steam corrosion fatigue occur from time to time. For example, the rotors of steam turbines and steam compressors have been working under complex alternating loads and steam corrosion environments for a long time. Boilers, steam generators, heat exchangers, etc. Exciting vibrations generated by equipment and internal fluids, as well as gas column resonance caused by pressure pulsations, all have the risk of steam corrosion fatigue failure, which affects the long-term safe and efficient operation of equipment. The structural design and material selection of such equipment should be based on the fatigue performance data in the steam corrosion environment, and the combined effects of machiner...

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Problems solved by technology

[0003] At present, the test system for the fatigue performance of test materials in steam corrosion environment in my country is still relatively scarce, although the Chinese patent document "High Frequency Fatigue Life Test System and Test Method in High Temperature Steam Environment" (public number: CN103954514A) reported a high temperature Fatigue life test system under steam environment, but it is mainly aimed at steam turbine blades in electric power equipment, focusing on testing the influence of oxygen content in wet steam on fatigue performance of materials, and cannot fully simulate the conditions in petroleum, chemical, electric power and other industrial fields. Various steam corrosion environments at different temperatures and states

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