Design method of pumping chamber of centrifugal submersible slurry pump

Abstract

The invention discloses a design method of a pumping chamber of a centrifugal submersible slurry pump, and belongs to the technical field of submersible slurry pumps. The design method comprises the following steps: 1) the width of the pumping chamber and the section shape of the pumping chamber are selected, and the pumping chamber is wider than an outlet of an impeller; 2) the diameter of a basecircle of the pumping chamber is determined; 3) the area of the radial section of the pumping chamber is determined; 4) a tongue angle of a pressurized water chamber tongue is determined; and 5) theangle of a diffusion tube is determined, wherein the angle of the diffusion tube is less than or equal to 12 degrees. According to the design method of the pumping chamber of the centrifugal submersible slurry pump, the problems that a spiral pumping chamber is prone to being blocked, and a partition tongue is seriously abraded are solved, and the problem that an annular pumping chamber is low inefficiency is solved; and factors such as abrasion, passing capacity and efficiency are comprehensively considered, so that the designed submersible slurry pump is high in passing capacity by adoptingthe quasi-spiral pumping chamber, and not prone to blockage, the abrasion of the separation tongue is small, the service life is long, and the efficiency is high.

Description

technical field [0001] The invention relates to a design method of a pressure water chamber of a centrifugal submersible slurry pump, which belongs to the technical field of submersible slurry pumps. Background technique [0002] The pressure water chamber of the centrifugal pump generally adopts the spiral water pressure chamber, the sewage pump and the pump containing the fiber often adopt the annular pressure water chamber, and the submersible slurry pump adopts the pressure water chamber between the spiral shape and the ring shape, that is, quasi Spiral pressure water chamber. Although the spiral pressurized water chamber has high efficiency, it is prone to blockage, and the tongue is severely worn; although the annular pressurized water chamber has advantages in terms of passing capacity, radial force, and abrasiveness, its efficiency is low. Submersible slurry pumps need to comprehensively consider factors such as wear, passing capacity, efficiency, and operational re...

AI Technical Summary

Problems solved by technology

Although the spiral pressurized water chamber has high efficiency, it is prone to blockage and the tongue is severely worn; although the annular pressurized water chamber has advantages in terms of passing capacity, radial force, and wear resistance, its efficiency is low

Submersible slurry pumps need to comprehensively consider factors such as wear, passing capacity, efficiency, and operational reliability, but the current design method for the pressure water chamber of the slurry pump cannot take into account the above aspects

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