The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 1984
Filed:
Mar. 03, 1982
Robert J Koenig, Vernon, CT (US);
Leonard W Stevens, Vernon, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A coolable stator assembly 18 positioned outwardly of an array of rotor blades 32 in a gas turbine engine is disclosed. The stator assembly includes an outer case 48 and an outer air seal 76 positioned outwardly of the array of rotor blades by the outer casing leaving a variable clearance gap G therebetween. The outer case has an upstream flange 52 and a downstream flange 54 for joining the outer case to adjacent cases 46, 50. A coolable rail assembly 22 for varying the diameter of the outer air seal and the clearance gap G is attached to the outer air seal. Various construction details for improving the sealing effectiveness of the stator assembly are developed. The coolable rail assembly is supported inwardly of a plurality of spray bars 26 from the upstream flange and the downstream flange. In one embodiment, a first section 102 and a second section 104 of the outer casing support the rail assembly from the flanges. The cross-sectional area of the first and second sections are smaller than the cross-sectional area of the rail assembly. An array of stator vanes 61 adjacent the outer air seal and rail assembly is supported from a flanged joint 58 spaced axially from the rail assembly.