Continuous harmonic shrouding
US4386887A · kind A · utility
9Cited by
16References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1980 |
| Grant date | Jun 7, 1983 |
| Priority date | — |
| Expiry date | Jun 30, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D5/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved blade rotor structure for an axial flow turbine substantially reduces vibratory stress at resonant frequencies by rigidly connecting the blades to each other in groups equal in number to an integer multiple of the resonant frequency of the blades (i.e. a harmonic frequency) divided by the rotor running speed. Flexible tie means are used for connecting adjacent groups of blades together for substantially reducing axial-torsional vibration of the blades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.