How does a steam turbine nozzle work?

1) The main function of the steam nozzle is to convert heat energy to kinetic energy. 2) To direct the steam at high velocity into blades of turbine at required angle. It is a nozzle with large entrance and tapers gradually to a smallest section at exit. It has no diverging portion.

How does a governing valve work?

A steam turbine governor is a component of the turbine control system that regulates rotational speed in response to changing load conditions. The governor output signal manipulates the position of a steam inlet valve or nozzles which in turn regulates the steam flow to the turbine.

How does steam spin a turbine?

In simple terms, a steam turbine works by using a heat source (gas, coal, nuclear, solar) to heat water to extremely high temperatures until it is converted into steam. The potential energy of the steam is thus turned into kinetic energy in the rotating turbine’s blades.

How is compounding done in steam turbine?

Compounding of steam turbine is used to reduce the rotor speed. It is the process by which rotor speed come to its desired value. A multiple system of rotors are connected in series keyed to a common shaft and the steam pressure or velocity is absorbed in stages as it flows over the blades.

What is vacuum in steam turbine?

Vacuum applies to steam turbines because the pressure of saturated vapour above available cooling water is well below 1 bar (typically 17 mbar at 15°C ambient). These shortcomings are examined and used to explain the anomalous response of a turbine to a copious supply of cold winter cooling water.

Why do steam turbines need to governing?

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 primary objective in the steam turbine operation is to maintain a constant speed of rotation irrespective of the varying load.