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Contra-rotating gas compressor structure and composite type anti-whirling device structure suitable for contra-rotating gas compressor air entraining system

A technology of bleed air system and vortex reducer, which is applied to the components of pumping devices for elastic fluids, machines/engines, mechanical equipment, etc., can solve problems such as inapplicability, reduce the impact of vibration and improve stability performance and reliability, and the effect of reducing leakage

Active Publication Date: 2019-11-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing vortex reducer structures are all arranged in the interstage disk cavity of the co-rotating compressor, which is not suitable for the engine structure of the counter-rotating compressor

Method used

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  • Contra-rotating gas compressor structure and composite type anti-whirling device structure suitable for contra-rotating gas compressor air entraining system
  • Contra-rotating gas compressor structure and composite type anti-whirling device structure suitable for contra-rotating gas compressor air entraining system
  • Contra-rotating gas compressor structure and composite type anti-whirling device structure suitable for contra-rotating gas compressor air entraining system

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Such as figure 1 , 2a , 2b shows a composite vortex reducer structure suitable for the counter-rotating compressor bleed air system, including the first-stage compressor wheel 1, the second-stage compressor wheel 2, the finned vortex reducer 3, the tube Type vortex reducer 4 and tube type vortex reducer cage 5;

[0033] Wherein, the finned vortex reducer 3, tubular vortex reducer 4 and tubular vortex reducer cage 5 are all arranged in the disk cavity between the primary compressor wheel 1 and the secondary compressor wheel 2 Inside, and the rotation axes of the first-stage compressor disc 1, the second-stage compressor disc 2, the finned vortex reducer 3, the tubular vortex reducer 4 and the tubular vortex reducer cage 5 coincide; the one The steering of the first-stage compressor wheel 1 and the second-stage compressor wheel 2 are opposite, f...

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Abstract

The invention discloses a contra-rotating gas compressor structure and a composite type anti-whirling device structure suitable for a contra-rotating gas compressor air entraining system. The composite type anti-whirling device structure is characterized in that a first-stage gas compressor wheel disc and a second-stage gas compressor wheel disc reversely rotate in a coaxial manner, the contra-rotating gas compressor structure is formed, and outer edge check rings of the first-stage gas compressor wheel disc and the second-stage gas compressor wheel disc form the air inlet slot of the contra-rotating gas compressor air entraining system; fin type anti-whirling devices are evenly distributed on the high radius position along the circumference, and fixed to the first-stage gas compressor wheel disc, and tubular anti-whirling devices are evenly distributed on the low radius position along the circumference, and mounted on the second-stage gas compressor wheel disc through a tubular anti-whirling device holder. Through the composite type anti-whirling device structure of the high-radius fin type anti-whirling devices and the low-radius tubular anti-whirling devices, the airflow pressure losses of the contra-rotating gas compressor air entraining system can be effectively reduced, the system stability and reliability are greatly improved, meanwhile, the fixed manner is simple and reliable, mounting is convenient, and later-period maintenance and repair can be achieved.

Description

technical field [0001] The invention relates to a counter-rotating compressor structure and a composite vortex reducer structure suitable for the bleed air system of the counter-rotating compressor, belonging to the technical field of aero-engine structure design. Background technique [0002] As a complex rotating machine with a high degree of integration, an aero-engine consists of thousands of parts, mainly composed of rotating parts and stationary parts. Air is compressed in the compressor, combusted in the combustion chamber, and expanded to perform work in the turbine. Drives the turbine to rotate to provide power for the compressor. With the development of aero-engine design technology, in order to reduce the number of engine parts, reduce the weight of the engine, and improve the performance of the engine, a counter-rotating compressor structure is proposed. [0003] On the other hand, with the continuous improvement of engine performance, the temperature before the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/26F04D29/66
CPCF04D29/26F04D29/666F04D29/667
Inventor 王锁芳夏子龙侯晓亭郝媛慧
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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