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Four working condition-point hydraulic design method of impeller of centrifugal pump

A technology of centrifugal pump impeller and hydraulic design, which is applied to the components, pumps, and pump elements of pumping devices for elastic fluids to achieve the effect of ensuring consistency

Active Publication Date: 2011-06-08
柳州市标新特钢泵阀有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0013] In order to overcome the deficiencies of existing centrifugal pump impeller design methods, the present invention provides a new hydraulic design method for centrifugal pump impellers with four operating points

Method used

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  • Four working condition-point hydraulic design method of impeller of centrifugal pump
  • Four working condition-point hydraulic design method of impeller of centrifugal pump
  • Four working condition-point hydraulic design method of impeller of centrifugal pump

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Embodiment Construction

[0041] figure 1 and figure 2 Together determine the impeller shape for this embodiment. Like most centrifugal pump impellers, it has an impeller front cover (1) and an impeller rear cover (2), and is a closed impeller. If there is no impeller front cover plate and the impeller rear cover plate is very small, promptly make semi-open type or open impeller, also do not affect the enforcement of the present invention, because what the present invention controls is the parameter of blade (5). In the figure, the convex surface of the blade is the blade working surface (6), and the concave surface of the blade is the blade working surface (7). The present invention adjusts the impeller blade outlet width b through the following relational expressions 2 (3), the diameter of the outer circle of the impeller blade D 2 (4) The outlet placement angle β of the working surface of the impeller blade 2 (8), the inlet placement angle β of the working surface of the impeller blade 1 (9),...

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Abstract

The invention provides a hydraulic design method of an impeller of a centrifugal pump satisfying the requirements of four working condition points. The method is characterized in that the hydraulic design of the impeller of the centrifugal pump is carried out, and the geometrical parameters of the impeller of the centrifugal pump and the performance parameters of the four working condition points are associated, thus the effect of the coincidence of the actual performance curve and the required performance curve is achieved. The geometrical parameters of the impeller can be adjusted by adopting the impeller designed by method provided by the invention, and purpose of ensuring the performance of the centrifugal pump to satisfy the requirements of the four working condition points is achieved. According to the invention, the consistency of the actual running performance curve and required performance curve of the centrifugal can be ensured, and the method provided by the invention is especially suitable for the hydraulic design of the impeller of the centrifugal pump which has severe requirements for the performance.

Description

Technical field [0001] The invention relates to a hydraulic design method of four working condition points for a centrifugal pump impeller, which can be used when designing the impeller in the low specific speed working condition of the centrifugal pump, and can also be used in designing the impeller in the high specific turning number working condition of the centrifugal pump , especially suitable for use in situations where the performance parameters of centrifugal pumps are strictly required. Background technique [0002] At present, the known centrifugal pump impeller design adopts the speed coefficient method. This method is to design the geometric parameters of the impeller according to a certain working point proposed in the application. The formula for determining the main geometric parameters of the impeller is as follows: [0003] D 2 = K D 2 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22
Inventor 朱荣生袁寿其付强
Owner 柳州市标新特钢泵阀有限公司
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