Suction type discrete and inclined seam casing treatment control device and method of compressor

A process control, compressor technology, applied in pump control, machine/engine, components of pumping devices for elastic fluids, etc. The effect of flow blockage and suppression of axial momentum transport

Active Publication Date: 2018-04-27
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The interaction between the strong shock wave and the leakage vortex exists in the blade tip area of ​​the high-load compressor, which is easy to cause a large flow blockage
The flow blockage in the blade tip area of ​​the compressor is an important cause of the rotating stall, which restricts the stable working range of the compressor

Method used

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  • Suction type discrete and inclined seam casing treatment control device and method of compressor
  • Suction type discrete and inclined seam casing treatment control device and method of compressor
  • Suction type discrete and inclined seam casing treatment control device and method of compressor

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Embodiment Construction

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the purpose, technical solution and advantages of the present invention will be described in detail below in conjunction with the accompanying drawings and through specific embodiments. It should be noted that implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "backward", "left", "right", "top", "bottom", etc., are only for reference The orientation of the graph. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0027] Such as figure 1 As shown, the compressor suction type inclined seam casing processing control device of the present invention includes: compressor motor blade 1, compressor processing casing 2, discrete inclined seam 3, suction hole 4 a...

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Abstract

The invention discloses a suction type discrete and inclined seam casing treatment control device and method of a compressor. A plurality of discrete and inclined seams are formed in the wall surfaceof a compressor treatment casing in the circumferential direction, and the seams are inclined to the rotor rotation direction by a certain angle; then a certain number of suction holes are formed in the tops of the seams, and a back cavity is additionally arranged on the upper portion of the suction holes; by adjusting the angle of the suction holes, the air pumping volume and the air pumping position, flow vortex structures in the discrete and inclined seams and axial flow amount of the air flow of inflow and outflow of the discrete and inclined seams can be changed, and then the momentum ofa tip leakage flow and a mainstream can be changed; and the position of the interface of the tip leakage flow and the mainstream and flow loss caused by interaction between the seams and the tip flowfield can be adjusted. Compared with traditional discrete and inclined seam casing treatment, suction type discrete and inclined seam casing treatment can achieve the goal of reducing the efficiency loss while increasing the stable working range of the compressor.

Description

technical field [0001] The invention relates to a treatment control device and a flow control method for an air-breathing discrete inclined seam casing of a compressor, which are used to improve the stable working range of a compressor, and belong to the field of impeller machinery. Background technique [0002] The function of the compressor is to process the air flow passing through it with the lowest possible flow resistance loss to increase its pressure. The compressor is one of the core components of gas turbines and aero-engines. With the development of gas turbines and aero-engines in the direction of high compactness, low fuel consumption and high stability, the compressor load and efficiency must be increased while ensuring that the compressor has a high Stall margin is a goal that researchers are constantly pursuing. When the flow through the compressor decreases to a certain extent at a certain speed, unstable flow phenomena such as rotating stall and surge will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/02F04D29/52F04D29/68
CPCF04D27/0223F04D27/023F04D27/0238F04D29/526F04D29/682F04D29/684
Inventor 周小勇赵庆军刘蕾赵巍项效镕
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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