Boiler Parts
Boilers are usually divided into two types.
Distributes the incoming feedwater makeup along a portion of the length of the drum.
What is internal feedwater header?
The section of the boiler where air and fuel are mixed and combustion occurs.
What is a furnace?
Any heat that escapes through the furnace stack.
What is wasted energy?
Boilers pose hazards when their water levels become too ___.
What is too low?
In a fire tube boiler, ____ is applied to the inside of the tube while water is circulated on the outside of the tubes and heated to steam.
What is fire or heat?
What is internal chemical feed line?
Is purpose is to unite fuel and air for the most efficient combustion.
What are burners?
When a liquid flashes, it changes into this.
What is a gas?
This possibility exists if major failure occurs in the water tubes, spilling a significant amount of water into the furnace.
What is potential explosion?
In a water tube boiler, _____ is circulated on the inside of the tube, and fire is on the outside.
What is water?
Perforated line extending approximately one-half of the drum length into the steam drum.
What is internal continuous blowdown line?
It's named so because impurities in the water will concentrate, like mud, and settle to the bottom of the drum after a certain amount of time.
What is a mud drum?
For proper combustion, this must be supplied and must flow properly through the furnace.
What is air?
One of the main sources of boiler explosions.
What is gas or oil leakage into a furnace before light-off?
Water tube boilers often have _____ and a ____ connected by water tubes.
What is a steam drum and a mud drum?
Vaned buckets located near the top of the steam drum.
What are cyclone separators?
It's located between the boiler feedwater supply and the boiler feedwater pumps, is the source of feedwater to pump(s).
What is deaerator tank?
This type of fan furnishes combustion air across the burners.
What is a forced-draft fan?
A safeguard for overpressurization.
What is safety or relief valves?
The tubes that connect a mud drum and steam drum.
What are risers and downcomers?
A series of corrugated plates in front of the steam line that exits the steam drum.
What is a chevron separator?
These are usually centrifugal pumps and generate a significant amount of heat.
Boiler Feedwater Pumps
This type of fan takes suction on the hot gases in the furnace and pulls them through the boiler and out the stack.
What is induced-draft fan?
What is 20 cubic feet?
What is triple or quadruple?