IMPORTANT TERMS OF BOILER

Fire Box:

Place where fuel is burnt.

Grate:

The fuel is burnt on this.

Baffles:

Plates used for directing the flow of flue gasses.

Chimney:

For ensuring that spent flue gasses exit the boiler at reasonable height, it helps in creation of natural draught.

Damper:

Regulates the amount of air through chimney

Headers:

Pipes connected to tubes and drums.

Tubes:

For enabling heat transfer from flue gasses to water

Shell:

Cylindrical vessel which contains water to be converted to steam

Mountings:

For ensuring safe and satisfactory performance

Safety Valve:

It releases steam if pressure inside boiler exceeds certain design limits. May be of dead weight, spring loaded and lever types

Pressure Gauge:

For indicating steam pressure Water Level Indicator: for indicating water level.

Steam Stop Valve:

Permits flow of steam from boiler as and when desired.

Feed Check Valve:

Permits flow of water to boiler.

Blow off Cock:

For removing settlements collected at the bottom of boiler.

Manhole:

Permits entering of operator / inspection staff

Fusible Plug:

For avoiding any explosion due to overheating

Boiler Accessories:

Auxiliary equipment for efficient boiler operation

Pre heater:

A heat exchanger which is used to heat air entering the boiler with waste flue gases

Economizer:

A heat exchanger to heat feed water by means of outgoing flue gasses.

Super heater:

To super heat the steam coming from boiler