STEAM TURBINE GOVERNOR VALVE I SERVO VALVE I LVDT

TOPIC

GOVERNOR VALVE
LVDT
SERVO VALVE

Steam turbine governing is the procedure of controlling the flow rate of steam to a steam turbine so as to maintain its speed of rotation as constant. The variation in load during the operation of a steam turbine can have a significant impact on its performance

SERVO VALVE
An electrohydraulic servo valve is an electrically-operated valve that controls how hydraulic fluid is sent to an actuator. Servo valves are often used to control powerful hydraulic cylinders with a very small electrical signal

Function of servo valve
Servo valves. Servo valves are a close relative of the proportional valve and are based on an electrical torque motor which produces a small deflection proportional to the electrical current through its coil. They commonly use feedback between the main and pilot spools to give precise control.

LVDT
The working principle of the linear variable differential transformer or LVDT working theory is mutual induction. The dislocation is nonelectrical energy that is changed into electrical energy.
LVDT is an acronym for Linear Variable Differential Transformer. It is a common type of electromechanical transducer that can convert the rectilinear motion of an object to which it is coupled mechanically into a corresponding electrical signal.

Uses of LVDT
which is then converted to an electrical signal. The design of an LVDT is cylindrical consisting of primary and secondary windings. The primary windings produce a magnetic field in the center of the transducer signaling the secondary windings


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