Coupling structure for expansion unit output shaft and driven-side transmission shaft
US6761143B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2002 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Sep 18, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D15/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An expansion unit (4) for converting an expansion energy of pressure-increased steam into a rotation energy of an output shaft, wherein a cover member (26) is provided on the casing outer surface of the expansion unit (4). The cover member (26) has a function of sealing the end section of an output shaft (23) protruding beyond the casing outer surface against the outside and a function of recovering steam led out from the casing and has its pressured reduced after the conversion. The end section of the output shaft (23) provided inside the cover member (26) and a driven-side transmission shaft (119) disposed outside the cover member (26) are coupled with each other via a magnet type shaft coupling (120) so as to be able to transmit power, whereby the output shaft (23) and the driven-side transmission shaft (119) can be coupled without steam in the expansion unit leaking outside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.