High Temperature Flow Characteristics in Non-Full Opening Steam Gate Valve for Thermal Power Plant

4th Annual International Workshop on Materials Science and Engineering

Yu, Long^1 ; Yu, Shurong^1

School of Petro. ENG, Lanzhou University of Technology, Lanzhou

730050, China^1

关键词: Axisymmetric modeling;    Change of velocities;    Flow charac-teristics;    High temperature and high pressure;    High-temperature flows;    Monitoring points;    Thermal power plants;    Working environment;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/381/1/012121/pdf
DOI  :  10.1088/1757-899X/381/1/012121

来源: IOP

【 摘 要 】

Research on the conversion of flow energy and the flow characteristics in non-full opening steam gate valve for thermal power plant (SGVTP). According to the working characteristics of SGVTP, the simplified general model of throttle shaft symmetry for the non-full opening SGVTP is established. The flow field and temperature field of the valve were simulated within 5 seconds, the variation of flow rate and temperature with time was compared by testing 4 monitoring points on impact surface. The conclusion is that the distributions of velocity and temperature on the impact surface of the axisymmetric model are almost the same, and the change of velocity with time decreases with the increase of the distance between the central axis of the flow-path. When the load of temperature and external force changes periodically, the steam gate valve for thermal power plant (SGVTP) works in the condition with high temperature and high pressure, it is a great test for the performance of the valve and material. When the load of temperature and external force changes periodically, the working environment of the related components will further deteriorate.