Safety system for a steam turbine installation
US4225284A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1978 |
| Grant date | Sep 30, 1980 |
| Priority date | — |
| Expiry date | May 24, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D21/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A safety system for a steam turbine installation is disclosed based on a closed circuit principle and includes a two-channel low-pressure section in which safety devices are utilized and a high pressure section. Each channel of the low-pressure section acts hydraulically on the high pressure section by way of a tripping and reset relay. The high pressure section includes a high pressure hydraulic system and is divided into an intermediate safety system and a principal safety system each having a two channel arrangement. A one-channel common safety system is provided with stop valves for the steam turbine. Feed and discharge amplifiers are hydraulically connected in series and separate the intermediate and principal safety systems. A separating relay is provided between the principal and intermediate safety system so that the safety devices in the low pressure section can be tested channel by channel during operation of the steam turbine with the series arrangement of the feed and discharge amplifiers being interrupted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.