Design Principle and Control Logic of Exhaust System of Small Steam Turbine . The monitoring of the discharge pressure of the small turbine can reflect the internal vacuum condition of the small turbine. The vacuum level of the Roots water ring vacuum unit is not only related to the economical operation of the unit, but also affects the stability of the unit operation. It is also the vibration axis of the unit. One of the main reasons for displacement. Therefore, it is extremely important for the small turbine exhaust gas detection to protect the small turbine vacuum without exceeding the limit.

The design of the control logic of the small steam turbine shaft monitoring protection system mainly monitors the shafting signal and the shaft eccentricity signal. The two monitoring signals of the Suzhou vacuum pump shaft play a leading role and determines whether the small steam turbine trips into the emergency stop state. . Moreover, the spindle eccentricity signal is an important signal in these signals. So it can be unconditionally tripped.

For the displacement signal to go three elections in two ways, which can determine whether the small turbine spindle is in place, but in the shaft vibration signal processing can choose to determine the relationship between each other or. Shaft vibration is an important signal. No matter what kind of signal is used, it initiates a trip command to make the unit safely trip and stop in the shortest time.