Professional Manufacture Valve Assembly F00VC01528 Control Valve Injector Needle Injector Parts

Control valve design selection, especially in cavitation, flash and corrosion and other harsh conditions such as the success of the selection is not only related to the normal process control, but also affects the production of benefits and safety due to the selection of control valves involved in the application of fluid dynamics, material properties, mechanical and electrical control and other aspects of the application of knowledge, if the process of instrumentation and control valves failed to take into account the impact of the performance of control valves. Various factors, the final selection of the control valve can not fully meet the specific conditions of the control needs, resulting in control deviations, and even cause problems such as process safety. In order to choose the most suitable control valves for specific working conditions, this paper analyses the design and selection of control valves and the use of control valves in special working conditions, and then combines the control valves in the cavitation and flash evaporation of the practical use of the case to carry out research. By analysing the design and selection of control valves in special working conditions, it can provide better theoretical guidance and practical reference for instrumentation technicians in the selection process of control valves.

Control valves in different working conditions as a starting point, the type of valve internals and different flow characteristics, as well as valve positioners, cylinders and solenoid valves and other valve accessories to carry out a more in-depth study. On this basis, the flash steam problem of the control valve used in the high-pressure feedwater system of a plant of BASF CHEMICALS Co., Ltd. is analysed in practical application, and an optimised valve application plan is obtained through comprehensive evaluation. The main research methods in this paper include the combination of qualitative and quantitative analyses, the combination of theory and practical application methods, and the engineering calculation methods of valve fluids.