Rotary pneumatic valve in the petrochemical application 1)

clips of eccentric rotating pneumatic valve groups by the long neck institution convention, as arch crown ball or hemisphere pneumatic valve, pneumatic valve seat retainer, dry, Main and auxiliary shaft) Guide sleeve and packing, etc. Part type single rooms of different specifications, there is no standardization, seriation, modularization, but only part of the portfolio. According to the concepts and ideas put forward the concept of 'pneumatic valve', the concept of eccentric rotating pneumatic valve can seal the main ingredient in working conditions or material design pneumatic valve for packet classification, the influence of the performance requirement to establish to modular tape library products according to the characteristics of its own to establish different requirements of a part of the module library.
due to eccentric rotary pneumatic valve, eccentric rotary pneumatic valve adjustment, cut off the media, combined with the advantages of pneumatic valve ball and butterfly. Leakage is small, it can be used as cutting off pneumatic valve, adjustable ratio, small volume, light weight, flow coefficient, dynamic stability, is the effect of the pneumatic valve ( Generally the characteristic curve of flow in the critical point of pneumatic valves and this phenomenon is called as the pneumatic valve effect) Small unbalanced force is not obvious, pneumatic disc ( Single-seat pneumatic valve is about /) Wide temperature, high universality. For a same size change of pneumatic valve flow ability, just replace the seat, didn't change the disc. Coating and lining pneumatic valve cavity structure is simple, easy to adapt to the needs of different media. Good comprehensive performance of the pneumatic valve can adjust the pneumatic valve to replace the traditional, especially suitable for need adjustment range ( At this point it can replace a big development, two shunt regulating pneumatic valve is relatively small, so as to simplify the system and control) Working conditions, large flow resistance. If the power plant deaerator heating steam condensation water control pneumatic valve and the main pneumatic valve and the high viscosity medium ( Such as heavy oil) And so on.
the concept of eccentric rotating pneumatic valve need further study and solve the problem, and there may be several aspects have made great progress.
( ） The content of the computer aided design of eccentric rotating pneumatic valve for further study of sealing structure of sealing element. Frictionless contact seal eccentric rotary pneumatic valve, pneumatic valve rotating self-reliance eccentric, eccentric rotary pneumatic valve need the depth of the air heavy structure.
( ） Ceramic, high hardness alloy, high temperature composite coating such as the depth of the new research and development required for the application.
( ） Eccentric rotary pneumatic valve and so on the numerical simulation of dynamic process of pneumatic valves need to be further strengthened. Dust in the fire, steam media, paper pulp, sand and other media, the numerical method and the pneumatic valve pneumatic valve application will greatly improve the performance, reduce the development cost of technology. To shorten the development cycle.
( ） High frequency operation, long life, high load pneumatic actuators have more defects is improved. Intelligent electric rotary actuator is the focus of the current and future development. Research and development of new bus positioning is to improve the accuracy of the main ways of pneumatic actuators.
( ） Ceramic, high hardness alloy, high temperature composite coating post-processing technology and application and ability also needs to improve.
( ） Fire protection type, low temperature, super high temperature, corrosion resistance, abrasion resistance corrosion resistance of the application and potential market development and promotion of the type.