Impeller water power design method of solid-liquid two-phase flow pump

An impeller and phase flow technology, which is applied to the components, pumps, and pump elements of the pumping device for elastic fluids, can solve the problems of incomplete hydraulic design method of the impeller of the solid-liquid two-phase flow pump.

Active Publication Date: 2015-04-29
JIANGSU UNIV
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AI Technical Summary

Problems solved by technology

[0008] The existing hydraulic design methods for impellers of solid-liquid two-phase flow pumps are not complete, and even the hydraulic design methods for individual types of solid-liquid two-phase flow pump impellers still need to be improved in many areas.

Method used

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  • Impeller water power design method of solid-liquid two-phase flow pump
  • Impeller water power design method of solid-liquid two-phase flow pump
  • Impeller water power design method of solid-liquid two-phase flow pump

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Embodiment Construction

[0090] The present invention determines 1 blade outlet width b through the following formulas 2 , 2 The axial angle θ of the blade outlet tangent line, 3 The width of each blade b i , 5 impeller outlet diameter D 2 , 7 Radius R of the front cover of the impeller a , 8 arc radius R of impeller rear cover b , 10 blade outlet placement angle β 2 , blade outlet placement angle correction Δβ 2 , 11 blade inlet placement angle β 1 , blade number z, blade inlet displacement coefficient Ψ 1 , blade outlet displacement coefficient Ψ 2 , blade true thickness δ, and other important design parameters of the impeller.

[0091] In this embodiment, the parameters of the impeller are calculated under the premise of given design flow rate Q, design head H, and design speed n:

[0092] b i = b 2 [ 0.406 ( D i ...

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Abstract

The invention relates to an impeller water power design method of a solid-liquid two-phase flow pump, in particular to an impeller water power design method of a centrifugal solid-liquid two-phase flow pump high in specific speed. The impeller water power design method includes determines important design parameters such as the impeller outlet diameter D2, the blade outlet width b2, the blade outlet arrangement angle beta 2, the blade outlet arrangement angle allowance delta beta 2, the blade inlet arrangement angle beta 1, the number z of blades, the blade inlet excretion coefficient Psi 1, the blade outlet excretion coefficient Psi 2, the real blade thickness delta, the all-over blade width bi, the axial inclined angle theta of the blade outlet tangent line, the arc radius Ra of an impeller front cover plate, and the arc radius Rb of an impeller rear cover plate. Through production practice and test, design efficiency and standard of the solid-liquid two-phase flow pump are greatly improved, and design cost and risk are reduced. The solid-liquid two-phase flow pump designed and produced by the impeller water power design method has the advantages of excellent using performance and high economic benefits.

Description

technical field [0001] The invention relates to a hydraulic design method for an impeller of a solid-liquid two-phase flow pump, in particular to a hydraulic design method for a centrifugal solid-liquid two-phase flow pump impeller with a high specific speed. Background technique [0002] The solid-liquid two-phase flow pump refers to the equipment that increases the energy of the solid-liquid mixed medium through the rotation of the impeller and converts the electrical energy into the kinetic energy and potential energy of the medium. It is mainly used in mines, power plants, dredging, metallurgy, chemical industry, building materials and other industries. Petroleum and other industries. The solid-liquid two-phase flow pump theory can be studied from two aspects: the influence of the solid-liquid mixture on the pump and pipeline characteristics, and the law of the solid-liquid two-phase flow in the pump. [0003] The working medium of the solid-liquid two-phase flow pump i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22
CPCF04D29/2216F04D29/242
Inventor 付强刘永朱荣生王秀礼王学吉张本营
Owner JIANGSU UNIV
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