Horizontal tube primary cooler
Thread Content
I would like to ask everyone, when the spare horizontal tube primary cooler is not running, should the horizontal tube be filled with gas (should the inlet or outlet valve of the spare horizontal tube be opened)? This post was last edited by ldy6230016 on 2009-4-11 11:39 ]
It can be opened or not. If it is opened, only the inlet or only the outlet valve will be opened.
All inlet and outlet valves should be closed to prevent gas from staying and causing corrosion.
There is no clear regulation on whether the gas valve of the spare horizontal tube primary cooler should be opened or not. In the actual production process, the inlet or outlet is generally only slightly opened to maintain gas pressure. And according to experience, it is best to keep the circulating water flowing to ensure stable water quality. The pressure-maintaining gas volume alone has little effect on the corrosion of the primary cooler.
There should be no need to open the backup inlet valve, and there is certainly no need to open the outlet valve.
When the spare horizontal tube primary cooler is not running, the horizontal tube must be filled with gas to maintain pressure, because it is relatively safe only under positive pressure.
We haven't officially started construction yet and are under construction. According to what I'm learning now* Judging from the content, it seems that there is no need to open it.
Is the tube side of the horizontal tube primary cooler filled with water? Gas is used in the shell side. Am I understanding it correctly? The poster asked whether the horizontal pipe is filled with gas. My answer is no. The inlet and outlet valves of our factory are closed.
How to report the pressure of the primary cooler: If you use gas to report pressure, you need to fill it with gas, then close the outlet valve and open the inlet a little. If using steam, the inlet and outlet valves must be fully closed.
There is no need to open it. The horizontal pipe is usually in the negative pressure section. After the replacement is passed, the inlet and outlet can be closed. There is no need to boil the water. The order of opening the tower is to open the gas inlet first, open the first and second stages of circulating water, open the gas outlet, and adjust the indicators until they are qualified.
I agree with the view that only a small amount of imports should be opened.
Only turn it on a little, and it is relatively safe to maintain the gas pressure.
When switching over the primary cooler, the inlet valve must be closed to facilitate the rest of the tower and give the standby tower a rest period. The outlet valve may or may not be opened. This depends on your company's specific operating procedures.
If the spare primary cooler uses gas to maintain pressure, it can have a small outlet or inlet. If it does not use gas to maintain pressure, it does not need to be opened!
Super powers of observation! ! Personal opinion: After thorough cleaning, the inlet and outlet valves should be fully closed. It seems that most primary coolers operate under negative pressure. Could you please tell me how to maintain pressure when the inlet is closed and the outlet is slightly opened?
Our factory was put on standby after the cold in the early Qing Dynasty. Specifically, the import and export were closed, the top was vented, the positive pressure gas was turned on, and the pressure was maintained. It was not replaced when used, that's it.
I advocate that all the inlets and outlets of the standby primary cooler should be closed during the standby period! When it is enabled again, it should be replaced with steam. After the replacement is qualified, the steam inlet valves should be closed in turn. ； Close the relief valve at the top of the tower ； Open gas inlet ； Turn on circulating water ； Turn on low temperature water ； Open the gas outlet valve ； Adjust each indicator to normal. During this switching process, a dedicated person must pay attention to observe and adjust the suction in front of the fan! Remember! ! ! ! ! ! ! !
It is best not to open it. After cleaning with steam, close the inlet and outlet valves and open them for dispersion!
4# lhq6388 If the circulating water is kept flowing, the inlet and outlet valves must not be closed. If they are closed after the cooling water temperature drops, the gas temperature in the device will shrink due to the temperature drop and the pressure will drop. The shell of the primary cooler will easily collapse due to atmospheric pressure.