Patent · US Expired

Turbine blade with actively cooled shroud-band element

US6464460B2 · kind B2 · utility

11Cited by

9References

26Claims

0Family size

Assignee

ALSTOM (Switzerland) Ltd · CH

Inventors

Ibrahim El-Nashar · Kloten, CH
Beat Von Arx · Trimbach, CH
Bernhard Weigand · Lauchringen, DE
Hartmut Haehnle · Waldshut-Tiengen, DE
Rudolf Kellerer · Waldshut-Tiengen, DE

Key dates

Filing date	Nov 30, 2000
Grant date	Oct 15, 2002
Priority date	—
Expiry date	Dec 15, 2020

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2250/141
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In an air-cooled turbine blade (10) which has a shroud-band element (11) at the blade tip, the shroud-band element (11) extending transversely to the blade longitudinal axis, hollow spaces (16, 16′, 17, 17′) for cooling being provided in the interior of the shroud-band element (11), which hollow spaces (16, 16′, 17, 17′) are connected on the inlet side to at least one cooling-air passage (18) passing through the turbine blade (10) to the blade tip and open on the outlet side into the exterior space surrounding the turbine blade (10), the hollow spaces (16, 16′, 17, 17′) and the shroud-band element (11) are matched to one another in shape and dimensions in order to reduce the weight of the shroud-band element (11).

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