When the outlet pressure changes, the control mechanism such as the commander is first driven to move, thereby giving the signal pressure (or switching on the external energy), so that the control valve moves. The components of the inductive outlet pressure of the indirect acting voltage regulator and the components that are acted on and adjusted are separated.
(1) the working principle of the indirect acting voltage regulator is shown in Figure 2.
It consists of a main regulator, a command device and an exhaust valve. When the outlet pressure P is lower than the given value, the film of the conductor is reduced, the valve of the conductor is opened, and the gas is added to the under film space of the main pressure regulator after the throttle. Because P, greater than p: make the main regulator valve open, increase the flow rate, Pz restored to a given value. Conversely, when p: exceeds a given value, the controller film rises and closes the valve.
At the same time, due to the effect on the exhaust valve underside of the exhaust valve to open the exhaust valve, a part of the pressure of gas discharged from the atmosphere, so that the pressure of the main pressure regulator thin film lower side, and because of the P: the main pressure regulator valve is small, P is restored to the given value.