Flow characteristics of pneumatic butterfly valve orifice
According to the flow mechanics theory, the flow characteristics of the pneumatic butterfly valve orifice:
1. Air density;
2. Air quality passing through the orifice of pneumatic butterfly valve;
3. Orifice area of pneumatic butterfly valve;
4. Flow coefficient of pneumatic butterfly valve orifice;
5. Pressure change between the additional air chamber and the pneumatic butterfly valve body. There is a nonlinear relationship between the flow rate of the orifice and the pressure difference. In order to obtain the damping characteristics of the system, it is necessary to stop the linear treatment of it. There are: a mechanical model of the pneumatic butterfly valve with an additional air chamber. The pneumatic butterfly valve with damping effect from the orifice is equivalent to a damper system with elastic support, that is, the pneumatic butterfly valve with stiffness is in parallel with the damper with damping coefficient, Then it is connected in series with the pneumatic butterfly valve with rigidity, and finally it is connected in parallel with the pneumatic butterfly valve with rigidity.