F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 5/08 (2006.01) F01D 25/12 (2006.01) F02C 7/18 (2006.01) F02C 7/28 (2006.01)
Patent
CA 2491476
The invention provides a steam-cooled gas turbine with a plurality of blades cooled by steam, comprising: a rotor for supporting the blades, the rotor composed of a plurality of rotor disks which includes a plurality of spindle bolt holes circumferentially arranged at intervals and spindle bolts extending through the spindle bolt holes to connect the plurality of rotor disks to each other to define the rotor, the rotor including a steam supply passage extending in the rotor; a steam supply chamber, fluidly connected to the steam supply passage and the respective blades, for distributing the steam to the respective blades; a steam recovery chamber, including an annular recess defined in the high pressure side end face of the rotor to be fluidly connected to the respective blades, for equally receiving the steam from the respective blades used for cooling the blades; and a steam recovery passage, fluidly connected to the steam recovery chamber, for directing the steam from the steam recovery chamber to the outside of the steam-cooled gas turbine; a catch in the form of radially outwardly convex and concave portions integrally connected to the rotor to be arranged alternatively along substantially the inner periphery of the opening of the annular recess; a closure in the form of substantially a ring for closing the opening of the annular recess; an engaging portion in the form of radially inwardly concave and convex portions alternatively arranged along the inner periphery of the closure; and the closure being attached to the rotor by the engagement between the catch and the engaging portions.
Hirokawa Kazuharu
Tanaka Katsunori
Uematsu Kazuo
Gowling Lafleur Henderson Llp
Mitsubishi Heavy Industries Ltd.
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