Patent · US Active

Light weight shroud fin for a rotor blade

US8967972B2 · kind B2 · utility

5Cited by

1References

11Claims

0Family size

Assignee

ALSTOM Technology Ltd · CH

Inventors

Herbert Brandl · Waldshut-Tiengen, DE
Igor Tsypkakyin · Turgi, CH
Philipp Indlekofer · Waldshut-Tiengen, DE

Key dates

Filing date	Nov 2, 2012
Grant date	Mar 3, 2015
Priority date	—
Expiry date	Nov 2, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49341
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A turbine blade is provided and includes a tip end carrying a shroud and at least one fin, which extends radially away from the shroud. The fin includes a first sidewall and a second sidewall, which are spaced apart, arranged parallel to each other, and are connected to the shroud, and a cutting edge, which is connected to the first and second sidewalls. The cutting edge thereby creates a hollow space between the sidewalls, the shroud, and the cutting edge, and further extends radially away from the first and second sidewalls. Also provided is a method of manufacturing the blade by casting the blade as single piece with the hollow fin or by forging the blade; and machining the fin to create the first and second sidewalls and cutting edge thereby opening the hollow space between said sidewalls and the cutting edge.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.