The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 1985
Filed:
Feb. 24, 1983
Taizo Inagaki, Yokohama, JP;
Kentaro Ichikawa, Chigasaki, JP;
Hitoshi Kido, Yokohama, JP;
Yozo Kawase, Yokohama, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
An apparatus for use in a method for discharging leakage water from guide vanes of a reversible hydraulic machine when the guide vanes are fully closed under the water surface of a runner being depressed comprises a runner connected to a main shaft of the hydraulic machine and covered with upper and lower covers, a plurality of guide vanes arranged at a peripheral portion of the runner, first and second discharge pipes provided with first and second discharge valves and arranged so as to connect a discharge conduit and a runner chamber formed between the runner and one of the covers, and a device for operating said discharge valves. A leakage water discharge method is carried out in accordance with such control mode as that the first and second discharge valves are both opened when the runner rotates in a power generation direction and one of the discharge valves is opened when said runner rotates in a pumping-up direction.