In a POWER PLANT,BOILER is vibrating.How does it happens,funda behind this and also,How it can be resolved?
When the BOILER is lit-up and attains a full-load, some-times it starts VIBRATING and gives an ABNORMAL SOUND.
Arvind:
There are a number of reason that a boiler might be vibrating. They include
1. Flame impingement on various surfaces
2. Vibrations due to gas and liquid flow in the various pipes, tubes and passages.
3. Combustion-induced boiler vibration (i.e., “rumble”)
to name just a few.
Have you isolated where the vibrations are originating from?
This depends, is it a critical or super-critical boiler?
Coal, gas, biomas fired?
T-fired or wall fired?
Tangent tube or membrane?
What are the firebox dimensions? (plan view)
It is sometimes common for boilers to “vibrate” in supercritical as the temperatures inside are fluctuating due to a large cross sectional area. Couple that with a firebox that is longer than it is wide (usually only a problem with wall fired) and you can really see it vibrate.
as for the noise you are talking about. What does it sound like? Is it a roaring sound, and popping sound, or something else?
A common sound that is sometimes heard is a roar but it is intermittent. This usually means that the coal being used has a high moisture content and you are getting “globs” of coal that are firing through and combusting all at once which gives you a roar. You can also sometimes hear the water in the coal flashing to steam which sounds like a large hiss or AHH.
