What is the boiler drum?

Boiler drum is made up of membrane wall, tube bundle, drum, furnace wall, header and other parts, among which boiler drum is a very important pressure component with many functions. This page introduces what the boiler drum is.

What is the boiler drum?

What is a boiler drum, the boiler drum is a cylindrical pressure vessel. Boiler drum is an important pressure component in natural circulation boiler and multiple forced circulation boiler. It is used for steam-water separation and steam purification in a water-tube boiler, forming water circulation loop and storing boiler water.

Function of boiler drum

Users should not only know what the boiler drum is, but also correctly understand its function, so as to better master the skills of boiler operation.

(1) The boiler drum is connected with the downcomer and water wall to form a natural circulation loop. At the same time, the boiler drum receives the feed water from the economizer and delivers saturated steam to the superheater. Therefore, what the boiler drum is, is the connecting hub of the three processes of heating, evaporation and overheating in the boiler, and plays a connecting role.

(2) There is a certain amount of water in the boiler drum, so it has a certain energy storage capacity. When the boiler working condition changes, it can slow down the speed of steam pressure change, which is beneficial to operation regulation, thus improving the safety of boiler operation.

(3) The boiler drum is equipped with various equipment, which can ensure the steam quality. For example, the steam-water separator in the steam drum of a steam boiler can separate the salty water droplets in the steam; The cleaning device in the steam drum of the boiler can remove the dissolved salt in the steam; The continuous blowdown device in the steam drum of the boiler can reduce the salt content of boiler water; The dosing device of the steam drum of the boiler can treat the water in the boiler, thus improving the steam quality.

Boiler drum is a heavy and expensive thick-walled pressure-bearing part in the boiler, which not only bears high internal pressure, but also generates thermal stress due to the fluctuation of wall temperature due to the change of operating conditions, so the working conditions are bad, and effective monitoring of operating conditions is needed.