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

Variable stator blade supporting structure

A technology of stator blades and supporting structures, applied in the field of turbines

Inactive Publication Date: 2009-05-20
GENERAL ELECTRIC CO
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although composite materials such as polyimide-based composites can be used, their wear characteristics may require more frequent replacement of such composite bushings

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
  • Variable stator blade supporting structure
  • Variable stator blade supporting structure
  • Variable stator blade supporting structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Referring now to the drawings, and in particular to figure 1 , shows a part of the axial flow compressor 10 in enlarged detail. Two series-connected compressor stages are shown, each of which includes a number of circumferentially spaced, generally radially extending stator blades 12, 14, only one of which is shown. Also forming part of each compressor stage are a plurality of circumferentially spaced, generally radially extending rotor blades 16, 18 carried by respective rotor disks 20, 22, only one of which is shown. An annular casing 24 surrounds and encloses each compressor stage to define the outer circumference of the annular flow path through the compressor. The rotor disks 20, 22 are each drivably connected to a frustoconical drive shaft which is operatively connected to a high pressure turbine (not shown) which supplies torque to the rotary compressor shaft.

[0025] The stator vanes 12 are identical to 14 and are also described below, having a longitudinal a...

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

The invention relates to a stator vane support structure (42) for supporting a turbine stator vane (12) in an oscillating movement about a stator vane oscillating axis and a method for holding between a tubular bush (44) and a carrier (52) method of face-to-face contact. Trunnion bearings for variable position stator blades (12) of turbomachines. The stator blade (12) includes an upper trunnion (28) and a lower trunnion (40) to allow the stator blade to oscillate about the longitudinal axis. The lower trunnion (40) is supported in a bushing (44) in the hole (54) of the annular stator blade carrier ring (52), and the bushing 44 is longitudinally slit and fits into the carrier ring in a laterally compressed state (52), so that when the bearing ring (52) is installed, the bushing (44) presses against the bearing ring hole (54) and is positioned therein. As the carrier ring material expands with increasing temperature, the precompression in the bushing (44) causes it to expand to maintain tight frictional contact between the bushing (44) and the bore (54) and thus prevent the bushing (44) and The relative rotation between the carrier rings (52) reduces wear of the carrier ring material.

Description

technical field [0001] The present invention relates to a turbomachine having stator blades that are oscillable about the longitudinal axis of the blades, enabling them to operate efficiently under various operating conditions. More particularly, the present invention relates to a support structure for swingably supporting variable turbine stator blades to reduce wear between the blade trunnion and the support structure engaging therewith. Background technique [0002] Today's turbines include variable geometry elements to increase the efficiency of the machine at different design points than those applicable to fixed geometry machines. For example, a gas turbine with an axial compressor includes variable geometry elements such as variable inlet guide vanes and variable stator vanes. The variable vanes have trunnions at their upper and lower ends and are arranged to be pivotable about a longitudinal axis so that their angle of attack with respect to the incoming airflow can...

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 Patents(China)
IPC IPC(8): F01D9/02F01D17/16F04D29/56
CPCF01D9/02F01D11/001Y02T50/672F01D17/162F16C17/10F04D29/563Y02T50/60
Inventor W·R·博文J·C·波特M·J·赫利
Owner GENERAL ELECTRIC CO
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com