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High-performance nonlinear symmetric bionic centrifugal impeller for flow control

A centrifugal impeller and flow control technology, which is applied to components of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., can solve the problems of impeller structural strength and safety that need to be tested, and promote Orderly and concentrated flow of gas, improvement of dynamic stall characteristics, and effect of increasing pressure difference

Active Publication Date: 2022-08-02
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is very important to the flow efficiency and stability of the gas, and the strength and safety of the impeller structure under high-speed operation need to be tested

Method used

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  • High-performance nonlinear symmetric bionic centrifugal impeller for flow control
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  • High-performance nonlinear symmetric bionic centrifugal impeller for flow control

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Embodiment Construction

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0029] refer to Figure 1-3 , the present invention provides a high-performance nonlinear symmetric bionic centrifugal impeller applied to flow control, which belongs to a two-dimension...

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Abstract

The invention discloses a high-performance nonlinear symmetric bionic centrifugal impeller applied to flow control, comprising an impeller main body, a plurality of bionic high-performance blades arranged on the hub of the impeller main body, a vane diffuser arranged on the outside of the impeller main body, the impeller main body and the The outer cover of the leaf diffuser is provided with a volute, the bionic high-performance blade is imitation seagull airfoil, the inner cavity of the bionic high-performance blade is provided with support components, and the two ends of the bionic high-performance blade are the leading edge of the blade and the trailing edge of the blade; suction A backflow suppression flap is arranged on the surface, and the backflow suppression flap is deflected up and down along the suction surface; a Gurney flap assembly is arranged on the pressure surface, and the Gurney flap assembly includes a first Gurney flap and a second Gurney flap. The invention can generate greater driving force and compressibility for the working medium, delay the separation of the boundary layer, improve flow stability and flow efficiency, and improve the single-stage pressure ratio and stable working area under the premise of ensuring isentropic work. .

Description

technical field [0001] The invention relates to the field of fluid machinery, in particular to a high-performance nonlinear symmetric bionic centrifugal impeller applied to flow control. Background technique [0002] Centrifugal impellers are widely used because of their simple manufacturing process, high boost ratio, simple structure, small axial size, and wide stable working range. When the two-dimensional centrifugal impeller is used in devices such as inert gas circulating pumps, the internal working fluid not only requires stable properties, but also requires good heat exchange capacity, small flow loss, etc., and it is relatively easy to compress and expand. For heat-power conversion, helium is generally used as a compressed working fluid in a closed system, but helium is difficult to compress, so an inert mixed working fluid is used, and the inert mixed working fluid makes the flow easier to separate and reduces the impeller and pump. The stable working range of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/28F04D29/30F04D29/44F04D29/42F04D29/66
CPCF04D29/28F04D29/30F04D29/444F04D29/4233F04D29/667
Inventor 刘刚田康琪王坤董宝田乐韵郑世强
Owner BEIHANG UNIV
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