Power plants – Combustion products used as motive fluid – Combustion products generator
Reexamination Certificate
2006-04-03
2009-06-02
Cuff, Michael (Department: 3741)
Power plants
Combustion products used as motive fluid
Combustion products generator
C060S774000, C060S751000
Reexamination Certificate
active
07540158
ABSTRACT:
In order to desirably prevent leakage of a working fluid from the tip clearance to reduce loss of a heat drop of the working fluid, a first corresponding blade of a second stationary blade row, which corresponds to a first reference blade of a first stationary blade row, is disposed in a position distant by 2L from the position of a lower end of a rotor blade in the direction of movement of the rotor blades when the rotor blade makes the closest approach to a lower end of the first reference blade. It should be noted that L is a value obtained by multiplying the average time T required for the high-pressure working fluid to pass through the rotor blade by the traveling speed U of the rotor blade. On the other hand, a second corresponding blade of the second stationary blade row, which corresponds to a second reference blade of the first stationary blade row, is disposed in a position of a lower end of a rotor blade when the rotor blade makes the closest approach to a lower end of the first reference blade.
REFERENCES:
patent: 2499772 (1950-03-01), Osborne
patent: 6-272619 (1994-09-01), None
patent: 2003-293702 (2003-10-01), None
Iwase Shiki
Saito Yoshio
Cuff Michael
Dwivedi Vikansha S
Japan Aerospace Exploration Agency
Westerman, Hattori, Daniels & Adrian , LLP.
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