What are the main components of a water tube boiler?

A water tube boiler is typically formed of four parts, a lower feed water drum – sometimes known as a mud drum – an upper steam drum with water surface from which the steam is evolved, water tubes connecting the two drums together and a super heater / economiser section (depending on the quality of steam required).

What are the parts of fire tube boiler and its functions?

A locomotive boiler has three main components: a double-walled firebox; a horizontal, cylindrical “boiler barrel” containing a large number of small flue-tubes; and a smokebox with chimney, for the exhaust gases. The boiler barrel contains larger flue-tubes to carry the superheater elements, where present.

What is fire tube boiler PDF?

FIRE TUBE BOILER. In fire tube steam boilers, the flames and hot gases produced by the combustion of. fuel pass through the tubes (called multi tubes) which are surrounded by water. The heat is conducted through the walls of the tube from the hot gases through. the surrounding water.

What is the main function of water tube boiler?

A high pressure watertube boiler (also spelled water-tube and water tube) is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which boils water in the steam-generating tubes.

How many types of boilers are there PDF?

What are the 3 types of boilers? Single tube and Multitube boilers. Fire-tube boiler and Water-tube boiler.

What is steam boiler PDF?

A steam boiler is a closed vessel, generally made of steel, in which water is heated by some source of heat produced by combustion of fuel and ultimately to generate steam. The steam produced may be supplied at low pressure for industrial process work in cotton mills, sugar industries etc.

What are the parts of fire tube boiler?

Different Components & Mountings Placed on the fire tube boiler

  • Safety valve.
  • Feed check valve (a kind of non-return valve)
  • Water level indicator.
  • Pressure gauge.
  • Steam stop valve.

What is boiler PDF?

Which is water tube boiler?

A watertube boiler has pipes (tubes) filled with water which are surrounded and heated by hot gases, whereas a firetube boiler’s pipes (tubes) are filled with fire and heat the water that surrounds them.

How many passes water tube boiler?

Number of passes – each time exhaust gas passes through the boiler, is referred to as a pass. Fire tube boiler typically have three or four passes, although one and two pass boilers are also in use.

What is the function of preheater?

The purpose of the air preheater is to recover the heat from the boiler flue gas which increases the thermal efficiency of the boiler by reducing the useful heat lost in the flue gas.