Pneumatic control valve regulating ability directly affect the security and stability of the system

Pneumatic - valve widely used in our country's energy industry and industrial field, so the research for the pneumatic control valve is of great significance. Steam turbine pneumatic control valve is an important component of the turbine regulating system, adjust its ability directly affect the security and stability of the control system. Combined with basic theories and methods of fluid mechanics, pneumatic control valve of the three-dimensional flow field model is established. Selection of typical working condition, on the computational fluid dynamics analysis software Fluent platform for pneumatic control valve flow field of the mathematical simulation. Experiment method has been used as the research method, can obtain some overall performance parameters of pneumatic control valve, but due to the limitation of cost and experimental period, often adopt the method of empirical formula or similar design to the design, development, and for some complex conditions of pneumatic - valve interior flow field, it is difficult to obtain accurate fluid flow parameters. The numerical simulation method the aerodynamic performance of the pneumatic control valve for steam turbine, the analysis and calculation of the system is to obtain the detailed parameters of the pneumatic - valve interior flow field, at the same time improving the design of key structural parameters of pneumatic control valve.