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Non-axisymmetric blade tip actuation generator

An excitation generator, axisymmetric technology

Inactive Publication Date: 2009-04-29
廊坊智驰动力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the inherent unsteady characteristics of the axial flow compressor due to the relative rotation of the rotating / static parts, it has not been fully considered in the design process of the casing

Method used

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  • Non-axisymmetric blade tip actuation generator
  • Non-axisymmetric blade tip actuation generator
  • Non-axisymmetric blade tip actuation generator

Examples

Experimental program
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Embodiment Construction

[0028] In order to describe the present invention more clearly, several typical embodiments of the non-axisymmetric blade tip excitation generator of the present invention will be described below with reference to the accompanying drawings.

[0029] Figure 5 It is an axial cross-sectional view of an embodiment of the non-axisymmetric blade tip excitation generator of the present invention. This non-axisymmetric blade tip excitation generator is composed of a processing ring 1 and two pitch adjusting rings 2. The treatment ring 1 is above the compressor rotor blade 3, and its axial position relative to the rotor blade 3 maintains an advancement equivalent to 50% of the axial length of the tip portion of the rotor blade 3.

[0030] Those skilled in the art can easily imagine that in other embodiments, by adjusting the axial width of the pitch adjusting ring 2, the axial position of the processing ring 1 can be moved forward or backward relative to the axial position described in t...

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Abstract

The blade tip excitation generator comprises a treatment ring which is cut with non-axial-symmetric distributed treatment grooves and one or two pitch-adjusting rings. The treatment ring comprises an excitation area with treatment grooves and a solid wall area without treatment grooves. When axial compressor losses speed, there is unsteady nature in non-axial-symmetric flow field and flow field, the blade tip excitation generator can excite blade tip flow field of the compressor rotor, which can not only enlarge the stable margin of the compressor, but also ensure the boosting ability of the compressor not decreased or make it raised, and increase the heat-insulation efficiency of the compressor around 1 %.

Description

Technical field [0001] The invention relates to a device for improving the stability margin of an axial flow compressor, in particular to a non-axisymmetric blade tip excitation generator which can obviously improve the stability margin of the axial flow compressor while simultaneously improving its adiabatic efficiency. Background technique [0002] Axial compressors are widely used in aero engines and industrial production. However, in the process of compressor design and development, the unstable flow of the compressor, such as rotating stall, surge, etc., greatly limits the further improvement of compressor performance. When a rotating stall occurs, there are one or more low-energy stall groups that rotate in the circumferential direction of the compressor. The performance of the compressor will suddenly drop, and the flow rate, pressure ratio and efficiency will all drop to the lowest point, and will cause periodicity to the compressor blades. Exciting force, even causing su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/52F04D27/02
Inventor 周盛袁巍刘建勇
Owner 廊坊智驰动力科技有限公司
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