Problems with the installation of centrifugal pump pipelines
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Our factory has installed two slurry pumps (with a flow rate of 245 and a head of 63) above a wastewater tank. The water in the tank is saltwater mixed with a small amount of salt particles; due to the severe corrosion caused by the saltwater, no bottom valve was installed on the inlet pipes of the pumps. Instead, an submersible pump (installed on the tank, with a flow rate of 150 and a head of 30) is used to supply water to the pipelines of the slurry pumps. The water inlet is located at the bottom of the slurry pump’s inlet pipe. The outlet pipe of the submersible pump has a diameter of 80 mm, while that of the slurry pump’s inlet pipe is 200 mm. The current problem is that when water is supplied using the submersible pump, the inlet pipe of the slurry pump does not get filled completely. What is the reason?
Your submersible pump has a low flow rate, which is not sufficient for what your centrifugal pump can handle
The submersible pump has a low flow rate; as mentioned upstairs, I’ve also tried to learn about it, but I actually don’t understand it very well
Where is this? A chemical plant? Have we crossed?
Poster: Your submersible pump’s outlet pipe has a diameter of 80, while the slurry pump’s inlet pipe has a diameter of 200. Pipes with a diameter of 80 can handle the flow, but how can a pipe with a diameter of 200 accommodate the same volume of flow? :L
Based on the phenomenon you described, it is suspected that too little water is being supplied by the outlet pipe of the submersible pump. This may be due to the low flow rate of the submersible pump; you can turn off the slurry pump first, wait until the inlet pipe of the slurry pump is filled with water by the submersible pump, and then turn on the slurry pump
It is obvious that the flow rate of 150 output by the submersible pump is far too low compared to the intake flow rate of 245 required by the slurry pump; in other words, the slurry pump does not receive enough flow, and therefore it cannot carry out its function.