Double-suction double-layer double-channel impeller and design method thereof

Abstract

The invention provides a double-suction double-layer double-channel impeller. The double-suction double-layer double-channel impeller is characterized in that the double-channel impeller is of an asymmetric double-suction structure, a left channel and a right channel are distributed in a 180-degree mirror image manner, and each channel is a double-layer impeller body; each channel of the double-channel impeller corresponds to a suction inlet, and the suction inlets are symmetrically arranged on to two sides of the double-suction double-layer double-channel impeller; each channel of the double-channel impeller comprises an upper layer and a lower layer, the layer close to a channel suction inlet cover plate is a first layer of channel, and the layer away from the channel suction inlet cover plate is a second layer of channel, the first layer of channel and the second layer of channel are different in axial width, the circumferential width of the first layer of channel is larger than that of the second layer of channel, and outer channels of the two layers of channels are different in streamline equation and inlet angles. Efficiency and non-blocking performance can be improved greatly, the problem that the conventional double-channel pump is overlarge in axial force is solved, and efficiency of the double-suction double-layer double-channel impeller at off-design condition points is increased greatly.

Description

technical field [0001] The invention belongs to the field of fluid machinery design, in particular to a double-suction, double-layer, double-channel impeller and a design method thereof. Background technique [0002] Double-channel pump is also called double-channel centrifugal pump, which has the characteristics of symmetrical structure, stable operation and good non-blocking performance. It is mainly used in submersible sewage pumps; because it can pump domestic sewage, industrial wastewater and liquid containing solid particles and fibers, thus Widely used in municipal, light industry, chemical industry, construction, mining and other industries. Due to the limitations of traditional water pump product design, its anti-clogging and anti-winding performance is poor, which seriously affects and restricts the development of municipal construction and environmental protection work, and greatly restricts the production capacity of enterprises. Therefore, it will be particular...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a double-suction, double-layer, double-channel impeller and its design method, which greatly improves its efficiency and non-blocking performance, and solves the problem of excessive axial force of the traditional double-channel pump , and the efficiency of the double-suction double-layer double-channel impeller is greatly improved at non-design operating points

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