Nuclear reactor pressure regulator safety valve water seal test system and method

Abstract

The invention discloses a nuclear reactor pressure regulator safety valve water seal test system and method. A circuit can carry out low-pressure and medium-pressure hydraulic water seal experiments under vacuum, air and multi-component non-condensable gas, and reveals the water seal process and the hydraulic water seal mechanism phenomenon of the hydraulic water seal structure. The circuit mainlyincludes a deionized water system, a heating water tank, a hot water pump, a pressure vessel, a vacuum pump, a non-condensable gas, an exhaust pressure relief port, a water seal experimental section,and a control and acquisition system. The experimental pressure range is from 0.1 to 1.0 MPa and the temperature range is 0 to 180 degrees centigrade. The experimental circuit of the present invention can realize the visualization of the experimental phenomenon of the water seal structure. The circuit pressure vessel is designed in an integrated manner and has multiple sensing devices. The systemand method have the advantages of high safety, high precision of experimental data, and easy installation and maintenance.

Description

technical field [0001] The invention belongs to the technical field of nuclear power equipment performance verification test research, and in particular relates to a nuclear reactor voltage stabilizer safety valve water seal test system and a test method thereof. Background technique [0002] The nuclear power plant voltage stabilizer is an important device for maintaining the pressure of the primary circuit at a set value and regulating the pressure of the primary circuit. A water seal structure is installed upstream of the safety valve of the pressurizer to reduce the leakage of hydrogen in the vapor phase space of the pressurizer to the pressure relief box through the safety valve, and reduce the hydraulic load on the pipeline downstream of the safety valve and the nozzle of the safety valve of the pressurizer And slow down the temperature fluctuation of the safety valve. As early as the end of the 19th century, British turbulence expert Reynolds studied how U-shaped pip...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a hydraulic water seal that can restore the reactor pressurizer safety valve hydraulic water seal to the greatest extent in view of the fact that the above-mentioned test device or test system is not applicable or does not meet the needs of the nuclear engineering field for the hydraulic water seal test research of the pressurizer safety valve. The test system and test method thereof of phenomenon, the system of the present invention can obtain liquid level, pressure, temperature at the water seal structure place, can obtain the influence that non-condensable gas in the pressurizer forms to water seal again simultaneously, for nuclear reactor in pile up Provide a basis for judging the water seal of the safety valve in the regulator during the process

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