Unlock instant, AI-driven research and patent intelligence for your innovation.

Guide vane for a turbomachine fan

A technology of guide vanes, turbines, applied in the direction of supporting elements of blades, mechanical equipment, engine elements, etc., capable of solving problems such as thrust reverser locking, bending, misalignment of engine nacelle structures, etc.

Active Publication Date: 2020-08-21
SAFRAN AIRCRAFT ENGINES SAS
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The effect of the cumulative pressure load on all segments of the blade 15 is to deform the blade by bending in the angular direction of the machine and to rotate the outer casing 4, which has various disadvantages: the common Bending and misalignment of components; misalignment of the radial shaft (which is used for power transmission between the turbine itself and auxiliary starter equipment, generators, etc.) as bearings and gear teeth wear increased; and With the inner casing 3 suspended by the vanes 15, the nacelle structure is misaligned and the thrust reverser may be locked

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Guide vane for a turbomachine fan
  • Guide vane for a turbomachine fan
  • Guide vane for a turbomachine fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] direct reference image 3 and Figure 4 . A blade 15 fitted with the invention comprises an inner end 20 fastened to the inner shell 3 and an outer end 21 fastened to the outer shell 4 . An oil lubrication circuit 22 is arranged in the machine, for example below the inner housing 3 . The oil lubrication circuit comprises a supply duct 23 by means of which the oil enters the blades 15 located downstream of the lubricating equipment where the oil has been exposed to friction and contact with hot entities such as bearings; the oil then becomes hotter and is adapted to transfer more heat to the blade 15 and create a greater localized thermal expansion in the blade 15 . This circuit further comprises an outlet circuit 24 by means of which the oil exits the blades 15 ; the oil, which is then cooled by passing through the blades 15 , is less suitable for transferring heat and produces less localized thermal expansion. The supply duct 23 extends into the vane 15 via a cavit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A guide vane (15) in an outer section of a turbofan engine contains oil cooling cavities which are located on one side of a main bending axis (Iz) of the vane (15) so that the differential thermal expansions compensate for the bending deformations caused by the aerodynamic forces exerted on the outer vane surface (16).

Description

technical field [0001] The subject of the invention is a turbine guide vane in the fan guide section. Background technique [0002] Some known turbines include twin-flow turbines, a brief description of which will be by means of figure 1 give. The rotor 1 is surrounded by a stator 2 comprising an inner housing 3 (also called hub) and an outer housing 4 (also called ferrule), which are concentric. The main flow 5 runs between the rotor 1 and the inner housing 3 and the secondary flow 6 runs between the inner housing 3 and the outer housing 4 . The compressors 7 , 8 and the subsequent turbines 9 , 10 extend along the main flow 5 upstream and downstream of the combustion chamber 11 . The machine further comprises a fan 12 upstream of the air streams 5 and 6 and a nozzle 13 opposite the fan, the fan consisting of rotating blades whose tops extend as far as the outer casing 4, where the air streams 5 and 6 converge and the air stream 5 Merge with the flow of 6. The blades of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/18F01D9/04F01D9/06F01D25/12F02K3/06F02K3/105
CPCF01D5/187F01D9/041F01D9/065F01D25/12F02K3/06F02K3/105F05D2220/36F05D2240/12F05D2260/20F05D2260/213F01D5/18
Inventor 尼尔斯·爱德华·罗曼·博尔多尼
Owner SAFRAN AIRCRAFT ENGINES SAS