Title:
HYDRAULIC TRANSMISSION, WIND TURBINE GENERATOR WITH THE SAME, AND METHOD OF CONTROLLING OPERATION OF WIND TURBINE GENERATOR
Document Type and Number:
Japanese Patent JP2015078739
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hydraulic transmission capable of delaying a drop in low-pressure line pressure if a boost pump sending hydraulic oil to a low-pressure line abnormally stops.SOLUTION: A hydraulic transmission includes: a hydraulic pump configured to pressurize hydraulic oil; a hydraulic motor configured to be driven with the hydraulic oil pressurized by the hydraulic pump; a high-pressure line connecting a discharge side of the hydraulic pump and a suction side of the hydraulic motor to each other; a low-pressure line connecting a discharge side of the hydraulic motor and a suction side of the hydraulic pump to each other; a storage tank connected to the low-pressure line and reserving the hydraulic oil; and a boost pump for sending out the hydraulic oil reserved in the storage tank to the low-pressure line. At least when the boost pump abnormally stops, no hydraulic oil is supplied from the low-pressure line to a bearing or seal of at least one of the hydraulic pump and hydraulic motor.
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Inventors:
TSUTSUMI KAZUHISA
UCHIDA MITSUYA
YAMAGUCHI HIROYUKI
UCHIDA MITSUYA
YAMAGUCHI HIROYUKI
Application Number:
JP2013216088A
Publication Date:
April 23, 2015
Filing Date:
October 17, 2013
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F16H39/06; F03D9/00; F16H61/12
Attorney, Agent or Firm:
Seishin ip patent business corporation