Flow characteristics of orifice of pneumatic ball valve
According to the flow mechanics theory, the flow characteristics of the orifice of the pneumatic ball valve are as follows:
1. Air density;
2. Air quality passing through the orifice of pneumatic ball valve;
3. Orifice area of pneumatic ball valve;
4. Flow coefficient of orifice of pneumatic ball valve;
5. The change of pressure between the additional air chamber and the pneumatic ball 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 ball valve with an additional air chamber. The pneumatic ball valve with the damping effect of the orifice is equivalent to a damper system with elastic support, that is, the pneumatic ball valve with a stiffness of is in parallel with the damper with a damping coefficient of, Then it is connected in series with the pneumatic ball valve with rigidity, and finally it is connected in parallel with the pneumatic ball valve with rigidity.