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Blade, impeller and turbine; method of manufacturing same

A technology for turbine impellers and blades, applied in the direction of blade support components, mechanical equipment, engine functions, etc., can solve problems such as dependence, and achieve the effect of simple manufacturing

Active Publication Date: 2019-05-07
SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is therefore relatively difficult to fabricate and typically require the mold or tool comprising multiple parts to be used, and / or may require reliance on a five-axis machining center

Method used

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  • Blade, impeller and turbine; method of manufacturing same
  • Blade, impeller and turbine; method of manufacturing same
  • Blade, impeller and turbine; method of manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0067] figure 1 Three identical blades 10 are shown representing an embodiment of the invention. Each blade 10 is designed to be assembled with N-1 identical blades 10 to form an impeller 100 comprising N blades ( figure 2 ).

[0068] The impeller 100 itself forms part of a turbine 110 .

[0069] In the impeller 100 the blades 10 are mounted on a rotor disk 12 in an axisymmetric manner about the axis X of the impeller. When using the impeller, the fluid flow flows along the axis X from the upstream side of the impeller to the downstream side of the impeller.

[0070] In the following description, elements associated with the upstream side are written as "u" and elements associated with the downstream side are written as "d".

[0071] Each blade 10 comprises, successively outwardly from the wheel in a radial direction: a root 14 , an airfoil 16 and a tip 18 .

[0072] The root 14 and the tip 18 thus constitute the two ends of the blade. They include respective platforms ...

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PUM

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Abstract

A blade for a turbine wheel comprising N blades. The blade has at one end a platform (13) formed as an integral part of the airfoil of the blade. For the part of the axial length of the blade, the section on the plane perpendicular to the axis (X) of the impeller of the flow path of the platform consists mainly of two rectilinear segments (48ps, 48ss) respectively arranged on the two sides of the airfoil )composition. These segments form an angle of 90°-180° / N with respect to the radial direction on either side of the airfoil.

Description

technical field [0001] The invention relates to a blade for a turbine wheel having N blades arranged around a hub shaft: the first end of the blade has, on the side facing the airfoil of the blade, a surface presenting a so-called "platform wall" first platform. The number N is an integer equal to the number of blades included in the impeller. Background technique [0002] This impeller may be a rotor wheel and thus receive energy from the air flow or send energy to the air flow passing through the impeller; it may also be a stator wheel, in which case it serves to direct the air flow. [0003] In the following, the term "platform wall" is used to denote the surface of the platform of the blade facing towards the airfoil. [0004] Especially when a blade for a turbine wheel has a tip with a tip platform wall and a root with a root platform wall, the blade forms a part of complex shape. It is therefore relatively difficult and often required to manufacture the mold or tool...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D5/14F01D5/30F01D5/22
CPCF01D5/143F01D5/3007F01D5/225F01D9/041F05D2220/30F05D2230/50F05D2260/81
Inventor 萨米·贝尼舒克里斯蒂安·巴瑞德斯蒂芬妮·德弗兰塞巴斯蒂安·迪加 布鲁 德 库萨特帕特里克·埃米利安·保罗·埃米尔·胡彻
Owner SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A