Improvements in or relating to turbine blading or the like


614,678. Turbine blades. PARSONS & CO., Ltd., C. A., and GARDNER, F. W. July 19, 1946, No. 21683. [Class 110 (iii)] Clearance for both radial and axial expansion is provided between the coacting faces securing the blade roots to the rotor, and an additional connection comprising a parallel faced tongue coacting with a parallel-faced groove restrains the blade from rocking transversely. The groove d is preferably curved at the bottom. In one embodiment, Fig. 3, the upper faces f<1>, f<2>, f<3> of the blade serrations are in contact with the corresponding faces of the rotor groove serrations, and clearance is left between faces a and b. The faces f<1>, f<2>, f<3> are, in a known manner, inclined at different angles such that the planes containing them intersect at a line in the transverse central plane of the blade root; the faces f<1>, f<2>, f<3> thereby remain in contact on expansion. In a modification, the faces f<1>, f<2>, f3 may be parallel. The blade root may be of T form. The rotor grooves may be disposed axially instead of circumferentially. Alternative em. bodiments are described in which the blade fixing is of the straddle type, the tongue c being formed on the rotor periphery and the groove d on the blade root.




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Cited By (17)

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    DE-4432999-A1March 21, 1996Mtu Muenchen GmbhLaufrad einer Turbomaschine, insbesondere einer axial durchströmten Turbine eines Gasturbinentriebwerks
    DE-4432999-C2July 30, 1998Mtu Muenchen GmbhLaufrad einer Turbomaschine, insbesondere einer axial durchströmten Turbine eines Gasturbinentriebwerks
    EP-1130217-A1September 05, 2001ABB Alstom Power N.V.Befestigung von Laufschaufeln in einer Turbomaschine
    EP-2320030-A1May 11, 2011Alstom Technology LtdRotor mit Laufschaufel für eine axial durchströmte Turbomaschine
    FR-2686941-A1August 06, 1993Gen ElectricAilette de rotor comportant des talons anti-oscillants et rotor de moteur a turbine a gaz comportant de telles ailettes.
    FR-2724690-A1March 22, 1996Mtu Muenchen GmbhRoue mobile d'une turbomachine, notamment une turbine a ecoulement axial d'un groupe propulseur a turbine a gaz.
    GB-2263736-AAugust 04, 1993Gen ElectricRotor blade and rotor assembly.
    GB-2263736-BMay 24, 1995Gen ElectricRotor blade and rotor assembly
    GB-2293212-AMarch 20, 1996Mtu Muenchen GmbhTurbomachine rotor blade mounting arrangement
    GB-2293212-BMay 27, 1998Mtu Muenchen GmbhRotor for a turbomachine
    GB-2398843-ASeptember 01, 2004Gen ElectricRotor wheel assembly with dovetail root arrangement
    US-2686655-AAugust 17, 1954Maschf Augsburg Nuernberg AgJoint between ceramic and metallic parts
    US-5152669-AOctober 06, 1992Westinghouse Electric Corp.Turbomachine blade fastening
    US-5593282-AJanuary 14, 1997Mtu Motoren- Und Turbinen-Union Muenchen GmbhTurbomachine rotor construction including a serrated root section and a rounded terminal portion on a blade root, especially for an axial-flow turbine of a gas turbine engine
    US-6142737-ANovember 07, 2000General Electric Co.Bucket and wheel dovetail design for turbine rotors
    US-8770938-B2July 08, 2014Alstom Technology LtdRotor for an axial-throughflow turbomachine and moving blade for such a rotor
    WO-2016195689-A1December 08, 2016Siemens Energy, Inc.Système de fixation pour surface portante de turbine