Flowing water corrosion water chemical experiment system

Abstract

The invention provides a flowing water corrosion water chemical experiment system which includes a loop. In the water flow direction, a deoxygenization water tank, a main pump, a heat regenerator, a preheater, a test area, a heat exchanger and a pressure regulating system are arranged in the loop. The heat regenerator comprises a shell pass and a tube pass located in the shell pass. The main pumpconveys water in the deoxygenization water tank to the preheater through the tube pass; inlet water flows to the test area after being treated by the preheater; water flowing out of the test area flows into the heat exchanger through the shell pass and water treated by the heat exchanger flows to the pressure regulating system. The pressure regulating system comprises a first electric regulating valve and a plurality of pore plates connected in series, which are connected; each pore plate is correspondingly provided with a first stop valve, and each first stop valve is connected with the corresponding pore plate in parallel. Stepless adjustment of the pressure in the loop is achieved by means of the pressure regulating system; the pressure in the test loop can be accurately regulated, theregulating range is wide, the regulating precision is high, stability and safety of thermotechnical hydraulic parameters of the system are effectively guaranteed, and therefore a long-period corrosionexperiment can be carried out.

Description

technical field [0001] The invention relates to the technical field of dynamic water accelerated corrosion experiments, and more specifically relates to a hydrochemical experimental system for dynamic water corrosion. Background technique [0002] The corrosion performance of new nuclear power materials is usually obtained by placing the experimental parts in an autoclave and conducting long-term experimental research. The experimental research data is only the corrosion characteristics of new nuclear power materials in static water chemical environment conditions; the autoclave is mainly composed of high-pressure A certain volume of sealed cavity composed of kettle body, kettle cover, safety valve accessories, temperature and pressure monitoring components and fasteners, etc., the higher the design pressure and temperature of the equipment, the smaller the volume of the sealed cavity; The body is a stainless steel cylinder that can withstand high temperature and high pressu...

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Problems solved by technology

The temperature and pressure are adjusted by heat exchangers and voltage regulators respectively, and the newly developed nuclear power material test pieces are placed in a special test body; the test system has no specific dosing system and cannot dynamically adjust specific water quality requirements, and the main pump power components Long-term corrosion operation under high temperature and high pressure environment poses a great challenge to the reliability of the main pump’s long-term stable operation; therefore, common thermal experimental devices are not suitable for long-term hydrodynamic corrosion experiments of nuclear power materials

[0004] Shanghai Jiaotong University invented a flow accelerated corrosion test device. The circuit of the device is equipped with a pressure-stabilizing water tank, a centrifugal circulating pump, a stop valve, a flow meter, the first test section, the second test s

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