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1.发明公开公开(公告)号：US20240093609A1
公开(公告)日：2024-03-21
申请号：US18365118
申请日：2023-08-03
发明人： Richard David Conner , Ryan Cox , Josef Merki , Brian Larsen
CPC分类号： F01D5/10 , F01D5/022 , F01D5/03 , F01D5/143 , F03D1/0633 , F03D9/32 , F05B2220/31 , F05B2240/33 , F05B2240/923 , F05B2250/14 , F05B2250/141 , F05D2240/24
摘要： A ram air turbine rotor comprises at least one intra-flow path shroud structure coupled between rotor blades, along a radial position between a support disc and an outer rim. The shroud structure includes shroud sectors each coupled between a respective pair of blades. The sectors each include a first edge adjacent to leading edges of the respective pair of blades, the first edge including a first curved segment, and a second edge adjacent to trailing edges of the respective pair of blades, the second edge including a second curved segment. The curved segments are each partially defined by a respective ellipse having a semi-major axis and a semi-minor axis. The semi-major axis is a portion of a spanwise distance between the respective pair of blades. The semi-minor axis is a portion of an axial distance between the leading edge of one blade and the trailing edge of an adjacent blade.
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公开(公告)号：US20240058904A1
公开(公告)日：2024-02-22
申请号：US18500223
申请日：2023-11-02
发明人： Jerry H. Griffin , Drew M. Feiner , Blair E. Echols , Michael J. Cushman , Alex J. Kowalski , Daniel J. Ryan
CPC分类号： B23P6/002 , B24B1/00 , F01D5/10 , F05D2230/72 , F05D2230/80 , F05D2260/83
摘要： A method and apparatus for maintaining integrally bladed rotors (IBR) includes using first vibration data from a IBR vibration apparatus of a first IBR to determine a set of values for a corresponding set of inherent vibratory properties based on a reduced order model for an IBR type to which the first IBR belongs. Shape data indicating an initial shape of a surface of a first blade is used, with repair data that indicates a candidate repair to form a restored shape, to determine a change in a value of an inherent blade section vibratory property of the set of inherent vibratory properties. A condition of the first IBR is determined based at least in part on the change in the value of the inherent blade section vibratory property. The first IBR is maintained based on the condition.
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公开(公告)号：US11808170B2
公开(公告)日：2023-11-07
申请号：US17614812
申请日：2020-05-27
发明人： Philippe Gérard Edmond Joly , Romain Nicolas Lagarde , Jean-Marc Claude Perrollaz , Laurent Jablonski , François Jean Comin , Edouard Antoine Dominique Marie De Jaeghere , Charles Jean-Pierre Douguet
CPC分类号： F01D5/26 , F01D5/10 , F04D29/668 , F05D2220/36 , F05D2230/60 , F05D2240/30 , F05D2250/71 , F05D2260/96
摘要： The present invention relates to a turbomachine assembly, comprising: a casing (10), a first rotor (12) which is movable in rotation with respect to the casing (10) about a longitudinal axis (X-X), and comprising: *a disk (120), and *a plurality of blades (122) capable of flapping with respect to the disk (120) during a rotation of the first rotor (12) with respect to the casing (10), a second rotor (140) which is movable in rotation with respect to the casing (10) about the longitudinal axis (X-X), and a damper (2) which is configured to damp a displacement of the first rotor (12) with respect to the second rotor (140) in a plane orthogonal to the longitudinal axis (X-X), the displacement being caused by a flapping of at least one blade (122) among the plurality of blades (122), the damper (2) comprising: o a first bearing part (21): *bearing against the first rotor (12), and *being configured to apply a first centrifugal force (C1) to the first rotor (12), o a second bearing part (22): *bearing against the second rotor (140), and *being configured to apply a second centrifugal force (C2) on the second rotor (140), and o a linking part (20): *connecting the first bearing part (21) to the second bearing part (22), and being thinned relative to the first bearing part (21) and the second bearing part (22), and o a flyweight (3) which is fixedly mounted on the damper (2).
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公开(公告)号：US11767760B2
公开(公告)日：2023-09-26
申请号：US17089564
申请日：2020-11-04
发明人： Richard David Conner , Ryan Cox , Josef Merki , Brian Larsen
CPC分类号： F01D5/10 , F01D5/022 , F01D5/03 , F01D5/143 , F03D1/0633 , F03D9/32 , F05B2220/31 , F05B2240/33 , F05B2240/923 , F05B2250/14 , F05B2250/141 , F05D2240/24
摘要： A ram air turbine rotor comprises at least one intra-flow path shroud structure coupled between rotor blades, along a radial position between a support disc and an outer rim. The shroud structure includes shroud sectors each coupled between a respective pair of blades. The sectors each include a first edge adjacent to leading edges of the respective pair of blades, the first edge including a first curved segment, and a second edge adjacent to trailing edges of the respective pair of blades, the second edge including a second curved segment. The curved segments are each partially defined by a respective ellipse having a semi-major axis and a semi-minor axis. The semi-major axis is a portion of a spanwise distance between the respective pair of blades. The semi-minor axis is a portion of an axial distance between the leading edge of one blade and the trailing edge of an adjacent blade.
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公开(公告)号：US20190186270A1
公开(公告)日：2019-06-20
申请号：US16221363
申请日：2018-12-14
发明人： Philippe Gerard Edmond JOLY , Francois Jean COMIN , Laurent JABLONSKI , Romain Nicolas LAGARDE , Jean-Marc Claude PERROLLAZ
IPC分类号： F01D5/10
CPC分类号： F01D5/10 , F01D5/22 , F01D5/26 , F04D29/324 , F04D29/668 , F05D2260/96
摘要： The invention relates to an assembly for a turbomachine comprising: a first rotor module (2) comprising a first blade (20), a second rotor module (3), connected to the first rotor module (2), and comprising a second blade with a smaller length than the first blade (20), and a damping device (4) attached to the second rotor module (3) and comprising a radial external surface (40) supported with friction against the first module (2), so as to couple the modules (2, 3) for the purpose of damping their respective vibrational movements during operation.
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公开(公告)号：US10082034B2
公开(公告)日：2018-09-25
申请号：US14755952
申请日：2015-06-30
发明人： Brian D. Merry , Gabriel L. Suciu , James D. Hill
CPC分类号： F01D5/225 , B23P15/006 , F01D5/02 , F01D5/10 , F01D5/34 , F05D2220/32 , F05D2240/24 , F05D2260/941
摘要： A rotor for a gas turbine engine includes a plurality of blades which extend from a rotor disk, adjacent ones of the plurality of blades are joined by a flexible web.
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公开(公告)号：US20180250733A1
公开(公告)日：2018-09-06
申请号：US15951364
申请日：2018-04-12
发明人： Hiroyuki OCHIAI , Nobutaka YANAGIDANI , Rui KONDO
CPC分类号： B21J1/04 , B21J5/022 , B21K1/36 , B21K3/04 , B23P15/006 , B23P15/02 , F01D5/10 , F01D5/142 , F01D5/26 , F01D5/34 , F02C7/143 , F05D2230/10 , F05D2230/14 , F05D2230/21 , F05D2230/211 , F05D2230/25 , F05D2230/53 , F05D2230/61 , F05D2250/183
摘要： A method for manufacturing a blisk includes an intermediate product molding step of molding a blisk intermediate product including a circular disk-corresponding part, a plurality of rotor blade-corresponding parts, and bridges each connecting a front edge of one of each pair of the rotor blade-corresponding parts adjacent to each other and a rear edge of the other one of the rotor blade-corresponding parts. The method for manufacturing the blisk further includes a disk finishing step of cutting the disk-corresponding part so as to finish the disk-corresponding part into the disk in a product form, and a rotor blade finishing step of cutting each bridge so as to finish the respective rotor blade-corresponding parts into the respective rotor blades in a product form.
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公开(公告)号：US10001404B2
公开(公告)日：2018-06-19
申请号：US14807296
申请日：2015-07-23
发明人： Sébastien Picand , Martin Toulemonde , Boris Huart
CPC分类号： G01H1/006 , F01D5/10 , F01D21/003 , F01D21/14 , F05D2220/31 , F05D2270/334 , G01H1/10
摘要： A method for monitoring sub-synchronous torsional oscillations of a shaft line of a steam turbine includes measuring a rotational speed of the shaft line over a period of time and generating, from the measured rotational speed, a signal representative of the rotational speed over the period of time. The method further includes performing a spectrum analysis on the signal to determine, for at least one given frequency, an amplitude of variation of the rotational speed at the given frequency, comparing the amplitude with at least one predetermined amplitude threshold for the frequency, and generating an alert signal if the amplitude exceeds at least one predetermined amplitude threshold.
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公开(公告)号：US09951625B2
公开(公告)日：2018-04-24
申请号：US14931474
申请日：2015-11-03
申请人： SNECMA
CPC分类号： F01D5/10 , F01D5/22 , F01D5/3023 , F01D11/006 , F05D2260/30 , F05D2260/96 , Y02T50/671
摘要： A turbine wheel for a turbine engine, comprising a disk carrying blades each having a platform, carrying an impeller connected by a stilt to a root. Each blade comprises an upstream radial wall and a downstream radial wall extending inwards from the platform of the blade. The roots of the blades are engaged into slots on the periphery of the disk, so that the radial walls of the blades and the platforms of the blades are circumferentially arranged end-to-end, and define inter-blade cavities radially inside the platforms, each accommodating an inter-blade sealing and vibration damping member. At least one member comprises an elastically deformable element configured so as to be elastically prestressed against the walls of a cavity in the member mounting position.
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公开(公告)号：US20180087384A1
公开(公告)日：2018-03-29
申请号：US15278483
申请日：2016-09-28
发明人： MAKSIM PANKRATOV , IGNATIUS THERATIL , TONY CHANG , NICOLA HOULE , VINCENT SAVARIA , DANIEL COUTU
IPC分类号： F01D5/10
CPC分类号： F01D5/10 , F05D2220/32 , F05D2240/24
摘要： The stiffness of a rotor part is varied over its circumference to allow damper rings to effectively work in high speed applications. Circumferentially spaced-apart pockets may be defined in the rotor to create discontinuous strain to increase the force required to lock the damper ring in the groove above the centrifugal force of the ring when the rotor is rotating.
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