Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing
Patent
1988-04-13
1989-04-11
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Axially extending shroud ring or casing
416195, 416221, F01D 522
Patent
active
048201243
ABSTRACT:
Blading for a rotating thermal machine consists of an airfoil (1), a root (4) and a shroud plate (5) or a shroud, the tip (2) of the airfoil (1) having a spigot-type step (11) with a semi-circular groove (12) extending around the whole periphery of its generated surface. The shroud plate (5) or the shroud has a recess corresponding to the step (11) with a semi-circular groove (8) extending around the complete periphery. At least one piece of a firmly seated heat-resisting wire (10) is located in the circular duct formed by the grooves (8, 12) as the fastening element between the components (1, 5). The blading is manufactured by pushing and/or pulling the wire (10) sideways into the duct formed by the grooves (8, 12). Optimum material combination, particularly for highly loaded gas turbine blading, is possible by selecting an oxide-dispersion-hardened superalloy with longitudinally directed columnar crystals for the airfoil (1) and a non-oxide-dispersion-hardened cast or forged superalloy for the shroud plate (5) or the shroud.
REFERENCES:
patent: 1423466 (1922-07-01), Snyder
patent: 1720754 (1929-07-01), Baumann
patent: 2445154 (1948-07-01), Reed
patent: 3501247 (1970-03-01), Tournere
patent: 4211516 (1980-07-01), Speil
BBC Brown Boveri AG
Powell Jr. Everette A.
LandOfFree
Method of manufacturing rotating thermal machine blading consist does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing rotating thermal machine blading consist, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing rotating thermal machine blading consist will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-663175