STEAM-TURBINE WATER CONTROL SYSTEM Russian patent published in 1997 - IPC

FIELD: turbines with water-lubricated bearings. SUBSTANCE: system has two pulse-amplifying systems, one of differential-flow type located in controllers proper or in respective pulse receivers and other of shut-off type incorporating shut-off valves and hydraulic servomotors. Basic parts of system are as follows: regulating pump, speed governing pulse receiver, shut-off valves, servomotors, steam distributors, starting and control, valves of hydraulic system. Extraction and back-pressure turbines have in their systems additionally introduced steam pressure controllers with respective control and safety valves as well as with internal steam-distributing elements. Required ties between separate system components are provided by levers. System is also provided with separate devices for closing control valves simultaneously with stop valves when protective gear components operate. EFFECT: improved economic efficiency of turbine due to reduced water flow rate and improved reliability of system. 4 cl, 4 dwg