Axial pump vane airfoil optimizing design method

An optimized design and axial flow pump technology, which is applied to parts, pumps, and pump elements of pumping devices used for elastic fluids, and can solve the problem of reducing the service life of the guide vane, reducing the strength of the guide vane, and increasing the difficulty of casting the guide vane, etc. problems, to achieve the effect of reducing casting difficulty, improving head and efficiency, and saving manpower

Active Publication Date: 2014-02-05
JIANGSU GUOQUAN PUMP MFG CO LTD
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Problems solved by technology

In the traditional design method, the inlet and outlet of the guide vane airfoil are sharper, and the thickness of the part near the inlet and outlet is also thinner, which reduces the strength of the guide vane on the one hand, reduces the service life of the guide vane, and on the other hand increases the difficulty of casting the guide vane

Method used

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  • Axial pump vane airfoil optimizing design method
  • Axial pump vane airfoil optimizing design method
  • Axial pump vane airfoil optimizing design method

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Embodiment Construction

[0028] figure 1 The shape of the guide vane airfoil is determined for this embodiment. In the figure, first calculate the working surface profile radius R 1 (2) and back profile radius R 2 (3), then the sharp parts at both ends of the inlet and outlet of the guide vane airfoil are changed to a circular arc transition, and the arc radius of the guide vane inlet is r 1 (4) and guide vane outlet arc radius r 2 (5) Make sure that the thickness near the inlet and outlet ends is also appropriately thickened. The chord length l(1) and profile placement angle α are obtained by calculation L (6), using the molded line placement angle α L (6) Instead of the placement angle of the guide vane inlet and outlet, determine the placement position of the guide vane.

[0029] The guide vane airfoil is designed according to the following main parameters, including the chord length l(1) and the working surface profile radius R 1 (2), back profile radius R 2 (3), guide vane inlet arc radiu...

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Abstract

The invention relates to an improvement of a traditional axial pump vane airfoil design method, and provides a novel axial pump vane airfoil optimizing design method. The method has the advantages that the strength of a vane is effectively improved, the service life of the vane is prolonged, the casting difficulty of the vane is reduced, the vane drawing time is greatly shortened, the labor is saved, and the hydraulic performance of the vane is ensured. The method is characterized in that the sharp parts at the inlet and outlet ends of the back surface of the vane airfoil are changed into the circular arc transition, and the parts near the inlet and outlet ends are properly thickened; the placing position of the vane is determined by using the profile placing angle to replace the vane inlet and outlet placing angle; the vane airfoil is designed according to the following main parameters, namely chord length l, working surface profile radius R1, back surface profile radius R2, vane inlet circular arc radius r1, vane outlet circular arc radius r2, and profile placing angle alpha L.

Description

technical field [0001] The invention belongs to the field of pump design and manufacture, and relates to the design of guide vanes of axial flow pumps, and is especially suitable for the optimal design of guide vane airfoils of axial flow pumps. 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 traditional design method, the inlet and outlet of the guide vane airfoil are sharper, and the thickness of the part near the inlet and outlet is also thinner, which reduces the strength of the guide vane on the one hand, reduces the service life of the guide vane, and on the other hand increases the difficulty of casting the guide vane . Contents of the invention [0003] In order to overcome the deficienc...

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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