Seal segment and rotary machine
US10876481B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 2, 2017 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Aug 26, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/96
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A seal segment includes a retainer extending in a circumferential direction of a rotary shaft on an outer circumferential side of the rotary shaft; a first seal body which has a plurality of first thin plate seal pieces extending inward in a radial direction from the retainer and laminated in the circumferential direction; a high-pressure side plate; a low-pressure side plate; and a second seal body having a plurality of second thin plate seal pieces which are laminated at an end portion of the retainer in the circumferential direction, extend inward in the radial direction, and have fluttering resistance higher than the first thin plate seal piece. The high-pressure side plate and the low-pressure side plate cover at least a part of the second seal body in the circumferential direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.