Is there a deviation in the return water pipe at the top of the water cooling tower, causing no water to flow out from one of the pipes?
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Circulating water is required in the process flow; two cooling towers have been installed. At the far end of the return pipe, there is a 90° elbow that leads directly to the water inlet on the side of the water cooling tower, and there is also a tee that connects to the water inlet on the same side of the water cooling tower. The current situation is that customers report an increase in the temperature of the circulating water. Upon inspection, it was found that there is water only at the outlet on the far end, while there is no water at the inlet at all – not a single drop. The return water pressure measured is 0.202 MPa. Only one main return valve is installed for the return water; the span of the pipes is 1.5 meters, and their vertical height is 3.9 meters. Return pipe DN150. May I ask why this is?
Extreme deflection of the vortex at the return water inlet?
The top of the water-cooling tower is an open structure; the return pipes are connected directly to the water tank at the top, from where the water is distributed evenly downward via distributors. I’m wondering why, despite the flow deviation caused by the different resistances (as the piping isn’t perfectly symmetrical), one end is spraying water while the other end doesn’t emit any water at all
I can’t send photos and videos; it seems like the website doesn’t support it. Otherwise, pictures and videos would make it clearer.
The pipe is blocked. Otherwise, it’s hard to explain.
There are two water-cooled towers on site. The customer reported that after this issue occurred in one of the towers, they switched to the other one. At first, water flowed from both ends, but after a while, only water flowed from the outlet at the far end.
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LZ’s video is in the attachment; the content can also be seen through the screenshots. I hope everyone will participate actively and carry forward the HaiChuan spirit
After watching this video, it seems that negative pressure has been created in your pipeline. You might consider having the personnel on site try it by hand. At the beginning, when the system is first put into use, the flow rate on the left side has not yet been established, so water flows from both sides. After the system has been operating for some time, the flow rate on the left side becomes established, which creates negative pressure in the right-side pipeline due to the rapid flow of the medium, as a result of which no water flows from that side, as shown in the diagram