What is the principle of a steam drum?
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Why can gas and water coexist
The three states of water – ice, water, and vapor – are primarily determined by temperature and pressure! When the water is at its boiling point, part of it turns into gaseous vapor. The drum maintains a certain balance between the inflow of water and the generation of vapor, which allows the liquid level in the drum to remain at a relatively stable position!
The drum produces saturated steam, which is a state where steam and water coexist at the boiling point
Today, thermal power plants are equipped with supercritical boilers, also known as once-through boilers, which do not have a steam drum.
As I understand it, the main functions of a steam drum are to act as a gas-liquid separator and to provide pressure buffering!
A steam drum is a container for collecting steam and water.
This summary is very accurate and clear!
Saturated steam becomes superheated steam when its temperature is raised to a certain level!