Construction method of low-pressure turbine stator blade wave front edge

A technology for low-pressure turbine and stator blades, which is applied to stators, geometric CAD, engine components, etc., and can solve problems such as the impossibility of applying turbine stator blades

Active Publication Date: 2021-05-28
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] The technical problem solved by the present invention is: in order to solve the defect that the existing design method cannot be applied to the turbine vane blade, the present invention takes the low-pressure turbine vane blade as the object, and proposes a low-pressure turbine wave profile based on the three-dimensional reference profile of the low-pressure turbine. The leading edge structure construction method lays the foundation for later numerical and experimental research on the noise reduction effect of wave fronts on three-dimensional turbine blades

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  • Construction method of low-pressure turbine stator blade wave front edge
  • Construction method of low-pressure turbine stator blade wave front edge
  • Construction method of low-pressure turbine stator blade wave front edge

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Embodiment Construction

[0053]In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

[0054] see Figure 1-Figure 5 , the technical solution proposed by the present invention to solve this problem is: the wave leading edge blade is formed by stacking sections with different chord lengths in the radial direction, and the avera...

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Abstract

The invention relates to a construction method of a low-pressure turbine stator blade wave front edge. A wave front edge blade is formed by stacking sections with different chord lengths in the radial direction, and the sections with the different chord lengths are obtained by interpolation of known basic blade profile data. In the interpolation process, the structure of the wave front edge is achieved by changing the thickness of an original blade along a mean camber line according to a certain change rule, an interpolation coefficient is determined according to the radius, and it is guaranteed that the average chord length of the wave front edge blade is consistent with the chord length of a straight front edge reference blade, the chord length of each section is distributed in the radial direction according to a sine or cosine rule, and finally, data of each section are integrated to obtain the low-pressure turbine wave leading edge structure.

Description

technical field [0001] The invention belongs to the field of turbomachinery noise control, and relates to a method for controlling low-pressure turbine rotational-static interference noise of an engine, in particular to a construction method for a wave front edge of a low-pressure turbine stator blade. Background technique [0002] In the field of aero-engines, the concept of blade bionics wave front noise reduction mainly comes from human understanding of the structure of the leading edge of humpback whale fins. If the concept of noise reduction is applied to real three-dimensional engine blades, there are even few studies on the mechanism of its generation and the effect of noise reduction that can be achieved. To solve this problem, the first thing to be solved is the three-dimensional blade configuration method with wave leading edge. [0003] In the existing research on the three-dimensional blade configuration method with wavy leading edge, the application number is 2...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D9/02G06F30/10
CPCF01D9/02G06F30/10
Inventor 向康深同航黎霖卯鲁秦连健欣乔渭阳
Owner NORTHWESTERN POLYTECHNICAL UNIV
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