Multi-working-condition design method for guide vanes of axial flow pumps

A design method and technology of axial flow pumps, applied in the direction of components, pumps, pump elements, etc. of pumping devices for elastic fluids, to achieve the effects of improving operational reliability, widening range, and good response effects

Inactive Publication Date: 2013-12-18
JIANGSU GUOQUAN PUMP MFG CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing axial flow pump guide vane design method, the present invention provides a new multi-working condition design method for axial flow pump guide vanes, and the number of multi-working condition points can be between 2 and 6

Method used

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  • Multi-working-condition design method for guide vanes of axial flow pumps
  • Multi-working-condition design method for guide vanes of axial flow pumps

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Embodiment Construction

[0034] figure 1 and figure 2 Together determine the vane shape of this embodiment. The present invention adjusts the guide vane hub diameter through the following relations D h (1), guide vane inlet diameter D 3 (2), 1 / 2 guide vane divergence angle θ / 2(3), guide vane height h (4) and the installation angle of guide vane inlet of each flow surface α 3k (5), so that the performance of the axial flow pump of this embodiment meets the flow rate of the optimal efficiency working condition Q BEP , the head of the optimal efficiency condition H BEP , No. i The flow rate of the operating point Q i , No. i Head of operating point H i , impeller speed n requirements.

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[0043] In the formula: Q BEP ——the flow rate at the optimal efficiency working condition point, cubic meters per second;

[0044] H BEP ——The head of the optimal efficiency working point, m;

[0045]...

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Abstract

The invention provides a design method, meeting requirements on multiple working condition points, for guide vanes of axial flow pumps. The design method is characterized in that during designing of the guide vanes of the axial flow pumps, geometrical parameters of the guide vanes and performance parameters of different working condition points are linked together, and actual operation performance curves of the axial flow pumps are enabled to be identical to required performance curves, so that effect that design performance curves of the pumps are coincident with the required performance curves is achieved. The geometrical parameters of the guide vanes designed by the method can be adjusted to achieve the objective that performance of the axial flow pumps can meet the requirements on the multiple working condition points. Consistency of the actual operation performance curves of the axial flow pumps and the required performance curves can be guaranteed, and the design method is especially suitable for designing of the guide vanes, with strict requirements on the multiple working condition points, of the axial flow pumps.

Description

technical field [0001] The invention relates to a multi-working-condition design method for the guide vane of an axial flow pump, which can be used when designing the guide vane in the low specific speed working condition of the axial flow pump, and can also be used to design the guide vane in the high specific speed working condition of the axial flow pump It is especially suitable for the situation where the performance parameters of axial flow pumps with multiple operating points are strictly required. Background technique [0002] Axial flow pumps are low-lift, high-flow pumps. The general performance range is: head 1~12m, flow 0.3-65m 3 / s, specific speed 500-1600. The design method of the guide vane can use the lift method, the integral method and the streamline method, but the streamline method is generally used. In the past, the design of axial flow pumps was mainly limited to a single working point, but with the needs of production development, sometimes it is nec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/54
Inventor 朱荣生蒋旭松杨爱玲
Owner JIANGSU GUOQUAN PUMP MFG CO LTD
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