Method and apparatus for labyrinth seal packing rings
US9181817B2 · kind B2 · utility
4Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2010 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Oct 14, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D11/001
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present disclosure relates to a seal assembly for a turbomachine that includes at least one arcuate plate, a biasing member, and a packing ring. In addition, the seal assembly includes a plurality of arcuate teeth disposed intermediate to the packing ring and the rotor. The plurality of arcuate teeth includes at least one subset of arcuate teeth. The clearance of at least one of the arcuate teeth is different from the clearances of the rest of the arcuate teeth. The clearances of the arcuate teeth of the at least one subset do not progressively increase going from an upstream to a downstream side of the turbomachinery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.