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A structure for generating a distributed suction vortex

A distributed and vortex technology, applied in the mechanical field, can solve the problems of compressor surge, blade stall flutter, cascade flow separation, etc., to improve control efficiency and reduce separation flow.

Active Publication Date: 2022-08-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, due to the constraints of materials and structural conditions, due to safety considerations, the tangential velocity of the compressor rotor blade tip is limited. To further increase the aerodynamic load will cause serious flow separation in the cascade, reduce the efficiency of the cascade and even cause Stall flutter of the blades or surge of the compressor, leading to serious accidents

Method used

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  • A structure for generating a distributed suction vortex
  • A structure for generating a distributed suction vortex
  • A structure for generating a distributed suction vortex

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Embodiment Construction

[0022] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0023] The following discussion provides various embodiments of the present application. Although each embodiment represents a single combination of the application, the various embodiments of the application may be substituted, or combined in combination, and thus the application may also be considered to encompass all possible co...

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Abstract

The present application provides a structure for generating a distributed suction vortex, wherein the structure includes a base body and a suction hole. The base body has a working surface on which flow separation of the gas can occur. The suction hole is arranged on the base body, and the pressure of the suction hole at one end of the working face is greater than the pressure at the end of the suction hole away from the working face. In the structure provided by this application, when the gas flows through the working surface of the structure and passes through the suction holes, the low-energy fluid in the gas will be discharged from the suction holes to reduce the separation flow, and at the same time, the fluid along the direction perpendicular to the gas movement will be discharged. It is sucked into the suction hole, so the gas flows laterally in the direction perpendicular to the movement of the gas. Due to the effect of the cross-flow gas, the gas passes through the suction hole and symmetrically forms two vortices in the separation area. The two vortices can improve the gas flow. The kinetic energy of the gas is increased, thereby improving the ability of the gas to resist the adverse pressure gradient, reducing the separation flow, and thereby improving the control efficiency of the flow separation.

Description

technical field [0001] The present application relates to the technical field of machinery, and in particular, to a structure for generating a distributed suction vortex. Background technique [0002] In recent years, the rapid development of aero-engines and gas turbines has, without exception, put forward higher pressure ratio, higher efficiency and stable working range requirements for compressor components. At present, due to the constraints of materials and structural conditions, the tangential speed of the compressor rotor tip is limited for safety reasons. To further increase the aerodynamic load will cause serious flow separation in the cascade, reduce the efficiency of the cascade and even cause Stall flutter of the blades or surge of the compressor leads to serious accidents. SUMMARY OF THE INVENTION [0003] It is an object of the present application to provide a structure for generating a distributed suction vortex that reduces the flow of gas separation. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66
CPCF04D29/667
Inventor 周逊李柏罗磊杜巍
Owner HARBIN INST OF TECH
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