Synergic action device of preventing breath heavily and expanding stability of airbleed inside stator of multistage axial flow air compresdsor

A technology for axial flow compressors and stators, applied to components, mechanical equipment, machines/engines, etc. of pumping devices for elastic fluids

Inactive Publication Date: 2007-12-26
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a device for locally entraining air on the stator surface of an axial flow compressor to prevent panting and expand stability, so

Method used

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  • Synergic action device of preventing breath heavily and expanding stability of airbleed inside stator of multistage axial flow air compresdsor
  • Synergic action device of preventing breath heavily and expanding stability of airbleed inside stator of multistage axial flow air compresdsor
  • Synergic action device of preventing breath heavily and expanding stability of airbleed inside stator of multistage axial flow air compresdsor

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Embodiment Construction

[0023] The present invention is a multi-stage axial flow compressor stator vane internal air-induction synergistic anti-surge expansion and stability device, as shown in Figure 1, is composed of a stator 1, air suction groove (or air suction hole) 2, air induction pipe 3, collecting Air chamber 4 is formed. Stator 1 is a certain stator blade in a multi-stage axial flow compressor; the suction slot (or suction hole) 2 is located on the surface of the suction surface of the stator 1, and there is a similar area of ​​flow separation, which can be one or more; the air induction pipe 3 Located inside the blade of the stator 1, it is a ventilation pipe connecting each suction pipe; the air collection chamber 4 is located outside the flow channel casing 6, after the suction groove (or suction hole) 2 on the surface of the stator 1 sucks a small low-energy airflow The chamber where the air flows through the bleed tube 3. The suction groove (or suction hole) 2 sucks the low-energy flu...

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Abstract

This invention discloses a stator internal gas-inducing efficient anti-surge steady expansion device of a multi-stage axial compressor composed of a stator, a gas-suction groove, a gas-inducing pipe and a gas-collecting chamber, in which the stator is stator blade in the multi-stage axial compressor, the groove, one or many, is placed in a region adjacent to flow separation existing on the surface of the stator suction face, the gas inducing pipe is in the stator blade and a ventilation pipe connecting suction pipes, the collecting chamber is set outside of the runner box and collects gas flows induced by the gas-inducing pipe after the suction groove absorbs small low energy gas flows, and the suction groove absorbs fluids of low energy on the surface of the stator suction side and transports them to the chamber and discharges them out of the system after mixed press.

Description

(1) Technical field: [0001] The invention provides an anti-swelling and stabilizing device which takes into account both the flow control of the stator blade boundary layer of an axial flow compressor and the air release between stages, and belongs to the technical field of aerospace vehicle engines. (two) background technology: [0002] At present, the axial flow fan / compressor is developing towards high performance, high load and high stability. Studies have shown that unsteady rotor-stator interference will affect the service life of the engine and generate a lot of noise. The flow field at the outlet of the upstream stator The pressure loss will aggravate the unsteadiness and non-uniformity of the downstream rotor inlet, and may also cause high-cycle fatigue of the engine. Therefore, it is of great significance to study an airflow control measure to effectively weaken the flow separation in the stator channel. [0003] As early as 1904, Prandtl proposed the method of del...

Claims

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Application Information

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IPC IPC(8): F04D29/54F04D29/66
Inventor 桂幸民孙晓峰金东海陈迪殷明霞
Owner BEIHANG UNIV
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