Apparatus for preventing a turbine from exceeding revolution speed
US5234315A · kind A · utility
13Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1992 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Mar 16, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/56
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus comprises a first rotational speed detecting device provided on a stub shaft at a position closer to a turbine than a pump, a second revolution speed detecting device provided at the other end of the stub shaft, a comparator for continuously comparing values detected by these first and second rotational speed detecting devices, and a device for tripping the turbine when a difference is determined between the values compared by the comparator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.