Spiral centrifugal pump impeller parameter calculation method based on airfoil shape theory

A screw centrifugal pump, parameter calculation technology, applied to parts, pumps, pump components, etc. of pumping devices used for elastic fluids, can solve problems that are not given or involve hydraulic design of screw centrifugal pump impellers, etc., to ensure Match each other, facilitate application and programming, and calculate accurate effects

Inactive Publication Date: 2019-11-12
山西天海给排水设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent does not involve the hydraulic design of the impeller of the screw centrifugal pump, let alone the design of specific parameters

Method used

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  • Spiral centrifugal pump impeller parameter calculation method based on airfoil shape theory
  • Spiral centrifugal pump impeller parameter calculation method based on airfoil shape theory
  • Spiral centrifugal pump impeller parameter calculation method based on airfoil shape theory

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Embodiment Construction

[0031] A method for calculating the parameters of the impeller of a screw centrifugal pump based on the airfoil theory of the present invention includes the following formulas:

[0032]

[0033] In the formula:

[0034] C L —The lift coefficient of the blade in the centrifugal section of the impeller of the screw centrifugal pump;

[0035] m 1 —lift force correction coefficient of the centrifugal section of the impeller of the screw centrifugal pump;

[0036] m 2 — angle correction factor;

[0037] l—the blade length of the centrifugal section of the impeller of the screw centrifugal pump, mm;

[0038] δ max —The maximum thickness of the centrifugal section of the impeller of the screw centrifugal pump, mm;

[0039] alpha L —The blade attack angle of the centrifugal section of the impeller of the screw centrifugal pump, degrees;

[0040] δ max =1.279n s 0.3678 (2)

[0041] In the formula:

[0042] δ max —The maximum thickness of the centrifugal section of th...

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Abstract

The invention discloses a spiral centrifugal pump impeller parameter calculation method based on an airfoil shape theory, and belongs to the field of industrial design. The technical problem to be solved is to provide a spiral centrifugal pump impeller parameter calculation method based on an airfoil shape theory; a centrifugal pump impeller centrifugal section blade lift coefficient CL, a spiralcentrifugal pump impeller centrifugal section lift correction coefficient M1, an angle correction coefficient M2, a spiral centrifugal pump impeller centrifugal section blade maximum thickness delta max, a spiral centrifugal pump impeller centrifugal section blade attack angle alpha L and a spiral centrifugal pump impeller outlet edge inclination angle alpha 2 can be calculated. The spiral centrifugal pump impeller parameter calculation method can be widely applied to the field of industrial design.

Description

technical field [0001] The invention discloses a method for calculating impeller parameters of a spiral centrifugal pump based on airfoil theory, belonging to the technical field of industrial design. Background technique [0002] In the 1960s, Martin Shtal invented the screw centrifugal pump equipped with a screw impeller and used it to transport live fish in the port. It combined the advantages of the screw pump and the centrifugal pump and gave full play to the advantages of the screw pump and the centrifugal pump. In 20 years, more than 2,000 screw centrifugal pumps have been put into use in the conveying systems of major fishing ports. [0003] The screw centrifugal pump can not only run safely, reliably and stably, but also its efficiency is much higher than that of ordinary centrifugal impurity pumps and swirl impurity pumps. After the early domestic introduction of screw centrifugal pumps, they are mainly used in papermaking, seaweed chemical industry and fishing ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/24F04D29/00
CPCF04D29/007F04D29/242
Inventor 王亚军王秀礼陈文华董少杰
Owner 山西天海给排水设备有限公司
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