Fluid machine

A fluid machine according to an embodiment includes a sealing portion which is formed of an annular minute gap formed between a runner band of a runner configuring a 5 rotating portion and a sealing liner which is a stationary portion and arranged in opposition to the runner band. A groove having a...

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Bibliographic Details
Main Authors KAWAJIRI, HIDEYUKI, NAKAGAWA, NARITOSHI
Format Patent
LanguageEnglish
Published 17.04.2014
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES FOR LIQUIDS
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
PRODUCING MECHANICAL POWER
STEAM ENGINES
WEAPONS
WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Summary:A fluid machine according to an embodiment includes a sealing portion which is formed of an annular minute gap formed between a runner band of a runner configuring a 5 rotating portion and a sealing liner which is a stationary portion and arranged in opposition to the runner band. A groove having a quadrangular cross-sectional shape is formed circumferentially on a surface of the sealing liner configuring the sealing portion. In a cross section 10 perpendicular to a groove forming direction of the groove, an angle 0, which is formed between a side WU of the groove on the most upstream side with respect to the flowing direction of the leakage flow, and a side WO of the groove which is on an extended line of the surface of the sealing 15 liner, is determined to be 150 or more and 40* or less. 4933319_1 (GHMatters) P87783.AU i"
Bibliography:Application Number: AU20110213756