High temperature high pressure water circulation system

Abstract

The invention relates to water circulation systems, in particular to a water circulation system which can control hydrochemistry and meet high temperature and high pressure conditions, and solves problems such as the measurement and the control of a hydrochemistry parameter in the high temperature and high pressure water circulation system and the like. The system mainly consists of two loops; a primary loop is in a normal temperature and pressure state; through continuous circulation in the primary loop, the conductivity of water can be caused to reach a needed index; dissolved oxygen content and dissolved hydrogen content in the water can be comparatively precisely controlled; the PH value and temperature changes of the water can be detected in an on-line manner; and solutions containing special ions can be added in the primary loop according to the needs of an experiment; a high pressure pump and a preheater in a secondary loop can cause water in an autoclave to reach a state of high temperature and high pressure (320 DEG C, 12 MPa), and simulate practical service environments (such as a nuclear power high temperature water environment) to conduct an environment damage experiment on a material; and after heat transfer and cooling, water out of the autoclave can return to the primary loop to be continuously recycled and used.

Description

technical field [0001] The invention relates to a water circulation system, in particular to a water circulation system capable of controlling water chemistry and realizing high temperature and high pressure conditions. Background technique [0002] The service performance of nuclear power plant materials is a key issue related to the safe operation of nuclear power plants. Judging from the current operating experience of nuclear power plants, various environmental failures will occur in some key equipment materials such as circulation loop pipes and steam generator heat transfer tubes. The most typical failure mode is stress corrosion cracking, which seriously threatens nuclear power plants. safe operation. Therefore, it is imperative to study the damage and failure mechanism of key nuclear power materials in the service environment, to provide the basis for the design and processing of materials, and to provide safety evaluation criteria for the use of materials. To carr...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a water circulation system that can control water chemistry and realize high temperature and high pressure conditions, solve the problems of adjustment and control of water chemical parameters in the high temperature and high pressure water circulation system, and can more accurately simulate the typical nuclear power operating water environment. The environmental failure behavior of key materials provides the conditions

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