Gas turbine stationary shroud seals

US3947145A · kind A · utility

Assignee

• Westinghouse Electric Company LLC · US

Inventors

• Frank Michel · Rosbach, DE
• Egidio J. Ruffini · Havertown, US

Key dates

• Filing date: Oct 7, 1974
• Grant date: Mar 30, 1976
• Expiry date: Oct 7, 1994

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01D11/005
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A seal is provided between adjacent stationary annular shroud members in a gas turbine. The shroud members have an axially directed gap disposed between their adjoining ends. Each adjoining end of each stationary shroud has a shoulder arrangement which provides support for a seal disposed across the gap. The shoulders on the ends of the shrouds provide restraint against radially inwardly directed dislocation, and a blade ring which supports the shroud members themselves, provides restraint against axial and radially outwardly directed dislocation. The seal prevents escape of hot motive fluid from the generally axially directed working fluid flow path.