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