The calculation of the pressure of the underwater anti-corrosion pump is also very important to make it conform to the principles of economy, safety and applicability. Specifically, there are the following aspects:

The pool pressure of the submerged anti-corrosion pump, the pressure of the drainage pool, and the pressure drop (head loss) in the pipeline system.

Pipeline system data of underwater anti-corrosion pump (pipe diameter, length, type and number of pipe accessories, geometric elevation from suction tank to pressure tank).

If necessary, the device characteristic curve shall also be made.

In the design and layout of pipelines, the following matters shall be noted:

A. Reasonably select the pipe diameter of the submerged anti-corrosion pump. The pipe diameter is large, the liquid flow speed is small and the resistance loss is small under the same flow rate, but the high price and small pipe diameter will lead to a sharp increase in the resistance loss, which will increase the lift of the selected submerged anti-corrosion pump, increase the matching power, and increase the cost and operating costs. Therefore, it should be comprehensively considered from the perspective of technology and economy.

B. The discharge pipe and its pipe joint shall consider the large pressure they can bear.

C. The pipeline of the submerged anti-corrosion pump shall be arranged as straight as possible, and the accessories in the pipeline shall be minimized and the pipeline length shall be minimized. When it is necessary to turn, the bending radius of the elbow shall be 3~5 times of the pipeline diameter, and the angle shall be greater than 90 ℃ as far as possible.