What is bearing gear in turbine?

What is bearing gear in turbine?

turbine bearings are supported turbine rotor and protect the shaft from any tear and wear during the running condition with the help of a thin oil film which is produce by cyclic circulation of oil . Steam turbines have journal bearings and thrust bearings.

What is barring in compressor?

A barring engine (also called barring motor) is a small engine that forms part of the installation of a large engine, and is used to turn the main engine to a favourable position from which it can be started. Originally they were used to turn stationary steam engines to a position from which they could be started.

What is the use of a reheater in the thermal power plant?

The use of a reheater in the thermal power plant is to increase the temperature of the steam before it enters the low pressure turbine. A reheater has gotten its name from warming the steam at a phase after extension to a specific weight (Not till the condenser pressure).

What is barring speed in turbine?

What is the barring speed of turbine? – Quora. Typical barring speeds vary for different manufacturers depending on the required moment to roll out the sagging. As far as my operational experience goes it varies between 20 – 50 rpm.

What is the function of turning gear?

A jacking gear (also known as a turning gear) is a device placed on the main shaft of an engine or the rotor of a turbine. The jacking gear rotates the shaft or rotor and associated machinery (such as reduction gears and main turbines), to ensure uniform cool-down. Without turning, hogging or sagging can occur.

What is the function of the thrust bearing?

It is an axial bearing that permits rotation between parts. Thrust bearings support the axial thrust of both horizontal and vertical shafts. The functions are to prevent the shaft from drifting in the axial direction and to transfer thrust loads applied on the shaft.

What is a barring device?

Engine barring devices are connected to engines. Known barring devices have been used to rotate crankshafts of engines and adding features to these known devices increases the complexity and cost of such devices. The subject barring device (10) includes a shaft (32) adapted for both axial and rotational movement.

What is the function of reheater in a boiler?

— Reheater is a part of the boiler which to reheat steam output from the first level of the steam turbine. Reheated steam will again absorb the heat energy from the boiler to be used in the next level steam turbine. Reheater is one way to improve the thermal efficiency of the Rankine Cycle.

Why reheater is used in boiler?

Reheater – removes the moisture and increases steam temperature after a partial expansion.

What is a gear reduction?

A reduction gear is an arrangement by which an input speed can be lowered for a requirement of slower output speed, with same or more output torque. The high speed incoming motion from the wheel work is transmitted to the set of rotating gears, wherein the motion or torque is changed.

What is a barring gear on a wind turbine?

Barring gear. Barring gear (or “turning gear”) is the mechanism provided to rotate the turbine generator shaft at a very low speed after unit stoppages. Once the unit is “tripped” (i.e., the steam inlet valve is closed), the turbine coasts down towards standstill.

What is a turning gear on a turbine generator?

Barring gear (or “turning gear”) is the mechanism provided to rotate the turbine generator shaft at a very low speed after unit stoppages. Once the unit is “tripped” (i.e., the steam inlet valve is closed), the turbine coasts down towards standstill.

What are the main components of a thermal power plant?

Answer Wiki. This is basic Rankine cycle, working principle the thermal power plant, which consists of primary four components including boiler, turbine, condenser and feed pump. Turbine is copouled with the alternator or generator which develops electrical energy.

What are the functions of pulverizer in thermal power power plant?

The functions of pulveriser in a thermal power power plant are following: To supply pulverized coal to the boiler as per requirement of steam generation. Transport the pulverized coal from pulverizer to the burners in the boiler. To remove moisture in coal to an acceptable level for firing in boiler.