Interlock between the electric valve of the cooling tower inlet pipe and the start/stop of the pump
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This is my first time working on the cooling tower section, and I’m not sure which category it should be placed in: L. I’d like to ask for some advice. The first question is: there is an interlock between the electric valve on the cooling tower’s water inlet pipe and the start/stop of the pump, but there is also an interlock between the liquid level in the circulation tank and the start/stop of the pump. Can all of these be achieved through soft start on the screen? The circulating water pump and cooling tower are also equipped with manual start/stop switches on site. What’s not quite clear to me is: when it says there are manual start/stop switches at the cooling tower site, does that refer to the fan of the cooling tower? The second question is that the project I am working on is an expansion project that involves adding another cooling tower; I’m not sure whether the dimensions of the circulating water tank meet the requirements
It would be best to accompany your first question with a process diagram to facilitate discussion. For the second question, various conditions required for production are lacking; factors such as the additional capacity needed (the amount of water required for expansion) and whether it is possible to follow the same proportions as the original project are all matters that deserve attention.
The second question is that there were previously two cooling towers, and now one more is being added; this new tower has the same model as the first two. The rated flow rate of a single tower is 200 m3/h. Previously, the circulating water pumps operated in a two-in-use-one-backup configuration; now, with one additional pump added, it is a three-in-use-one-backup configuration. The rated flow rate of each pump is 218 m3/h. The size of the circulating pool is 20×8×2m (length, width, height)
With it already designed to this extent, it’s better to just copy it on-site. It seems to be an unmanned pump room. However, all on-site startups are necessary; it is best to introduce microcomputer control to ensure that normal on-site startup is achieved before integrating it into the automatic interlock system. Because the water pump needs to be monitored on-site during operation, and it must be stopped immediately if any problems occur.
Is the size of the circulating pool sufficient? Can it meet the water demand of three cooling towers and four pumps?