Method of and apparatus for operating pump turbine

Patent · Tue Jun 19 04:00:00 EDT 1979

OSTI ID:5555228

Kawase, Y; Fujisaki, M

In a method of operating a pump turbine, compressed air is supplied into a runner chamber of the turbine and a leakage drain valve of a guide vane is opened at the time of starting the pump turbine to force downwardly the level of the water in the runner chamber and to rotate a runner of th pump turbine in air. The comprssed air in the runner chamber is exhausted when the rotating speed of the runner reaches a rated speed for the pump operation, thus filling the runner chamber with water. The water containing a large quantity of dissolved oxygen and contained near the periphery of the runner is drained into a spillway through a pipe for draining water leakage through the guide vanes. Priming pressure in the runner chamber is detected and a leakage drain valve in the drain pipe is closed after a predetermined time from the detection of the priming pressure.

• Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
• Patent Number(s): US 4158525
• OSTI ID: 5555228
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250300* -- Energy Storage-- Pumped Hydro-- (-1989)
AIR
COMPRESSED AIR
CONTROL EQUIPMENT
CORROSION PROTECTION
CRYOGENIC FLUIDS
ELEMENTS
ENERGY STORAGE
EQUIPMENT
FLOW REGULATORS
FLUIDS
GASES
HYDRAULIC TURBINES
HYDROGEN COMPOUNDS
MACHINERY
NONMETALS
OPERATION
OXYGEN
OXYGEN COMPOUNDS
PUMP TURBINES
PUMPED STORAGE
PUMPS
STORAGE
TURBINES
TURBOMACHINERY
VALVES
WATER