Rotary kinetic fluid motors or pumps – With control means responsive to non-cyclic condition... – With testing means for speed control
Patent
1978-05-24
1980-09-30
Casoregola, Louis J.
Rotary kinetic fluid motors or pumps
With control means responsive to non-cyclic condition...
With testing means for speed control
415 17, F01D 2120
Patent
active
042252849
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.
REFERENCES:
patent: 2009419 (1935-07-01), Schwendner
patent: 2617438 (1952-11-01), Doran
patent: 2866470 (1958-12-01), Hold et al.
patent: 2998017 (1961-08-01), Cavalieri
Masek Jaroslav
Suter Franz
BBC Brown Boveri & Company Limited
Casoregola Louis J.
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