Raised rotor platform with an internal breech ring locking mechanism for brush seal application in a turbine and methods of installation
US6811374B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2002 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Oct 31, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/56
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In the diaphragm packing area of a turbine, a raised platform affords an annular sealing surface for contact with a brush seal carried by the diaphragm. The platform includes a plurality of platform sealing segments secured to a locking device carried by the rotor. The locking device includes a pair of raised rims having flanges with teeth projecting axially toward one another and defining slots therebetween. The platform segments each include underlying flanges with axially oppositely directed teeth. By displacing the platform sealing segments radially inwardly and passing the teeth of the locking device and platform segments through the respective slots, the platform segment teeth lie radially inwardly of the locking device teeth. The platform segments are then rotated radially to align the teeth to secure the sealing surface against radial movement. One segment may be staked, welded or screwed to the locking device to preclude circumferential movement during turbine operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.