Abstract:
PROBLEM TO BE SOLVED: To propose a ceramic bushing reducing conventional defects. SOLUTION: This invention relates to a ceramic-based bushing 10 for mounting in a turbomachine casing to provide a smooth bearing for a pivot of a variable-pitch vane. The bushing is constituted by a metal jacket 11 and a ceramic ring 16 secured to the inside wall 11a of the metal jacket 11 by brazing. The invention also provides a turbomachine compressor having variable-pitch stator vanes with pivots mounted in the casing by means of such bushings. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a compressor exerting an excellent compression function for a long period of time, by surely suppressing an addition reaction of refrigerant containing a compound having carbon double bond. SOLUTION: The compressor uses the refrigerant containing the compound having double bond. The compressor uses, as a coat layer of an internal constructional element of the compressor, any one of Fe-P electroplating coat, Fe-W electroplating coat, Fe-C electroplating coat, Fe-N electroplating coat, Co electroplating coat, Co-W electroplating coat, Cr electroplating coat, Cr-Mo electroplating coat, resin coating film, and a DLC surface treatment coat. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system for preventing wear on a tip shroud 106 of a turbine blade 100 in a turbine engine. SOLUTION: This system includes a pocket 212 formed in a contact surface 200 of the tip shroud 106 and a plug 211 that fits within the pocket 212 and has a durable outer surface 214. The durable outer surface 214 may include a cobalt-based hardfacing powder. The pocket may be machined out of the contact surface 200, and the plug 211 may include a plug of predetermined size that fits snugly into the pocket 212. In some embodiments, the durable outer surface 214 may substantially align with the contact surface 200 after the plug 211 is fitted into the pocket 212. In other embodiments, the durable outer surface 214 may remain slightly raised from the contact surface 200 after the plug 211 has been fitted into the pocket 212. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an erosion resistant protective structure for turbine engine components. SOLUTION: The erosion resistant protective structure comprises a shape memory alloy. The shape memory alloy includes nickel-titanium based alloys, indium-titanium based alloys, nickel-aluminum based alloys, nickel-gallium based alloys, copper based alloys, gold-cadmium based alloys, iron-platinum based alloys, iron-palladium based alloys, silver-cadmium based alloys, indium-cadmium based alloys, manganese-copper based alloys, ruthenium-niobium based alloys, ruthenium-tantalum based alloys, titanium based alloys, iron-based alloys, combinations comprising at least one of the foregoing alloys. Also, methods for forming the shape memory alloy onto the turbine component are disclosed. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for providing turbulence to an inner surface of a through hole in an article. SOLUTION: In this method, turbulence 38 is provided to the inner surface 40 of the through hole 36 (such as a turbine cooling hole). Turbulence material 12 is applied to a base plate 10 that can be finally inserted into the through hole. The base plate is a bar or tube formed of sacrificial material in most cases. After the turbulence material is applied to the base plate, the base plate is inserted into the through hole 36. The turbulence material is then fused with the inner surface by conventional heating technique. Next, the sacrificial base plate 10 can be removed from the through hole 36 by various technique. COPYRIGHT: (C)2004,JPO
Abstract:
The present invention relates to an airfoil (101) for a gas turbine. The airfoil (101) comprises a coated surface section (104) which is coated with a MCrAlY coating.