Combustion engine, gas turbine, and polishing layer

Details Combustion engine, gas turbine, and polishing layer Combustion engine, gas turbine, and polishing layer

2005-05-24

2005-05-24

Lopez, F. Daniel (Department: 3745)

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

C416S24100B, C416S24100B

Reexamination Certificate

active

06896485

ABSTRACT:
The present invention provides a gas turbine in which a proper clearance is kept between a rotor blade and a shroud for a long period of time from the operation start, so that damage to the rotor blade is less liable to occur. In a turbine portion of the gas turbine in accordance with the present invention, the rotor blade and the shroud face each other. At the tip end of the rotor blade is formed an abrasive layer, and on the inner peripheral surface of the shroud is formed a heat insulating layer. The abrasive layer is formed of a matrix and many abrasive particles dispersed in the matrix. The abrasive particles include protruding particles protruding from the matrix and embedded particles embedded in the matrix. In initial sliding of the rotor blade and the shroud at the early stage of operation, the inner peripheral surface of the shroud is ground by the protruding particles. After the protruding particles have disappeared, the inner peripheral surface of the shroud is ground by the embedded particles.

REFERENCES:
patent: 4169020 (1979-09-01), Stalker et al.
patent: 4249913 (1981-02-01), Johnson et al.
patent: 4735656 (1988-04-01), Schaefer et al.
patent: 5076897 (1991-12-01), Wride et al.
patent: 5702574 (1997-12-01), Foster et al.
patent: 5780116 (1998-07-01), Sileo et al.
patent: 5879753 (1999-03-01), Zajchowski et al.
patent: 5935407 (1999-08-01), Nenov et al.
patent: 5952110 (1999-09-01), Schell et al.
patent: 5997248 (1999-12-01), Ghasripoor et al.
patent: 6171351 (2001-01-01), Schroder et al.
patent: 6194086 (2001-02-01), Nenov et al.
patent: 0 273 854 (1988-07-01), None
patent: 484115 (1992-05-01), None
patent: 0 573 928 (1993-12-01), None
patent: 1 367 147 (2003-12-01), None
patent: 10-030403 (1998-02-01), None
patent: 2002 105666 (2002-04-01), None
patent: 94 19583 (1994-09-01), None
patent: WO 02097160 (2002-12-01), None

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