Cloth seal for an inner compressor discharge case and methods of locating the seal in situ
US6652231B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2002 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Feb 24, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/6012
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Upper and lower halves of the inner barrel of a compressor for a turbine are bolted to one another along a horizontal midline joint with metal-to-metal surface contact. Elongated grooves are provided in the engaging surfaces, with the upper groove having a depth greater than the depth of the lower groove. Elongated seals are provided in the grooves, including an elongated shim with a metallic woven covering on opposite sides, and margins having sealing edges. The depth of the seal is equal to or less than the depth of the upper groove and an adherent material maintains the seal in the upper groove during installation. In operation, the adherent material dissolves at temperatures above ambient and the seal drops by gravity to bear against the walls of the grooves in response to high pressure air leaking through any gap at the horizontal midline joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.