Why does the drum liquid level drop when the amount of steam in the drum and the water volume in the boiler remain constant?
Thread Content
This post was last edited by Qi Lili on 2010-10-27 at 17:44. I have a question and would appreciate some guidance: When the amount of steam in the drum and the water level in the boiler remain constant, why does the liquid level in the drum decrease? ?
The steam pressure has dropped, big brother!
If the steam pressure decreases, shouldn’t the amount of water vaporization increase? Why hasn’t the amount of steam produced by the drum changed? ? 、
Oppose the argument from the second floor. The amount of steam and water flow that you see in the control room is the flow rate per hour, not the total amount. There is a balance inside the steam drum: vapor-liquid equilibrium. The upper layer is steam and the lower layer is water; when the pressure in the steam drum is high, the amount of vaporization increases and the liquid level drops, and vice versa. When the drum liquid level is low, the drum pressure setting should be reduced (i.e., pressure relief should be applied), the drum liquid level return valve should be closed completely, and a soft water pump should be started to supply soft water to the drum, or some of the soft water from the drum with a high liquid level should be transferred to the drum with a low liquid level.
Isn’t it true that the lower the pressure, the easier it is to vaporize? ?
Check the furnace tube to see if there is any leakage
Hello, what kind of furnace tube are you referring to? I haven’t started working yet and don’t know much about it. Is it the shell side of an old boiler? ?
Thank you all; I now know about this issue.
Girl, you get too stuck in details! Once you have a basic understanding of boilers, you will naturally understand these issues.
Mm-hmm, that’s right. I’ve never done it in practice; it’s really difficult to just rely on imagination. But I’m no longer focusing on that issue and am currently learning from the masters at the factory*.
The woman is in charge of the boilers; it’s been enlightening^_^