Rotary machine
US11066938B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2019 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Mar 22, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary machine includes damper pins and platforms each having a flat surface extending in an axial line direction. For each adjacent pair of the platforms, a damper abutting surface of a first of the adjacent pair of the platforms extends toward a damper abutting surface of a second of the adjacent pair of the platforms as approaching an outer side of a rotor blade stage in a radial direction while opposing each other in a peripheral direction. A damper accommodation space, which is defined by surfaces including the damper abutting surfaces, is defined between each adjacent pair of the platforms. Each of the damper pins defines a regular polygonal prism extending in the axial line direction and includes a damper pin main body in which an angle defined by two side surfaces corresponds to an angle defined by the damper abutting surfaces between the adjacent pair of the platforms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.