Patent ID: 8459932

Claim:
A bearing device of gas turbine power generation equipment, comprising: a water-lubricated type bearing main body rotatably carrying a rotor of a generator; a sleeve provided on the outer circumference side of said bearing main body; and a bearing housing holding said sleeve via an O-ring while forming an annular clearance between the outer circumference of said sleeve and said bearing housing; wherein said bearing housing has a feed-water hole communicating with the clearance passage and adapted to feed water thereto, said sleeve has a lead water hole communicating with the clearance passage and leading a part of the water, that is fed to the clearance passage from the feed-water hole, to said bearing main body, and a discharge hole which communicates with the clearance passage at a position axially apart by a predetermined distance from a communicating position of the feed-water hole with the clearance passage and discharges a remainder of the water therefrom, and a minimum value of a passage sectional area of a water discharge line adapted to discharge water from the clearance passage through the discharge hole of said sleeve is made smaller than a minimum value of a passage sectional area of a lead water line adapted to lead water from the clearance passage through the lead water hole of said sleeve to said bearing main body.