公开(公告)号：US20060267290A1

公开(公告)日：2006-11-30

申请号：US11134177

申请日：2005-05-20

申请人： Doug Spencer ,  Mohsiul Alam ,  Mingfong Hwang

发明人： Doug Spencer ,  Mohsiul Alam ,  Mingfong Hwang

IPC分类号： F16J15/00

CPC分类号： F01D25/183 ,  F01D11/02 ,  F02C7/28

摘要： A shaft oil purge system comprises an entrance seal, an exit seal and a buffer air flow. The entrance seal comprises a circumferential carbon seal running on an inner shaft and another carbon seal running on an outer shaft. The exit seal comprises a labyrinth seal positioned on the inner shaft and towards the exit end of the annulus between the shafts. An abradable material filled groove positioned radially outward from the exit seal allows the inner shaft to rub without compromising the integrity of the outer shaft. The buffer air flow enters the annulus from a cavity at the entrance seal, purges oil from the annulus and improves the efficiency of the seals.

摘要翻译： 轴油清洗系统包括入口密封件，出口密封件和缓冲空气流。 入口密封件包括在内轴上延伸的圆周碳密封件和在外轴上运行的另一碳密封件。 出口密封件包括位于内轴上并且朝向轴之间的环空的出口端的迷宫式密封件。 从出口密封件径向向外定位的可磨损材料填充槽允许内轴摩擦而不损害外轴的完整性。 缓冲空气流从入口密封件的空腔进入环形空间，从环形空气中清除油脂并提高密封件的效率。

公开(公告)号：US20060083448A1

公开(公告)日：2006-04-20

申请号：US10967979

申请日：2004-10-19

申请人： Mohsiul Alam ,  Doug Spencer ,  Shari Charleston ,  Paul Talbert ,  Edward Jankowich ,  Matthew Johnson

发明人： Mohsiul Alam ,  Doug Spencer ,  Shari Charleston ,  Paul Talbert ,  Edward Jankowich ,  Matthew Johnson

IPC分类号： F16C27/00

CPC分类号： F16F15/0237 ,  F01D25/164 ,  F16C19/06 ,  F16C27/045 ,  F16C2360/23 ,  Y02T50/671

摘要： The present invention provides a centering feature to the bearing assembly of a turbomachine to provide optimum operating characteristics of the squeeze film damper. Unlike conventional bearing centering methods and apparatus, a compact compliant centering support for the squeeze film damper interfaces between a bearing outer race, and an outer support structure. The compact design is lightweight and inexpensive, can be retrofitted easily to an existing turbomachine, such as a turbine and compressor, for improved rotor dynamic performance. The compact compliant centering support damper may be comprised of a ring with bumpers spaced around the circumference at the inside and outside diameters to form spring elements between the bumpers. The centering support may lift the rotor inside the squeeze film cavity and may eliminate rotor weight effect on the damper performance. The centering support may be offset in the vertical direction to center the rotor under 1 g deflection to eliminate rub at the 6 o'clock location of a compressor or turbine shroud. Tangential grooves may be provided on the centering support outer bumpers to allow oil to squeeze out when the centering support is deflected to provide additional viscous damping. The outer bumper height may be controlled to limit maneuver deflection of the rotor.

摘要翻译： 本发明为涡轮机的轴承组件提供定心特征，以提供挤压薄膜阻尼器的最佳操作特性。 与传统的轴承定心方法和装置不同，用于挤压薄膜阻尼器的紧凑型配合定心支架在轴承外圈和外支撑结构之间形成界面。 紧凑型设计重量轻，价格便宜，可以轻易地改装到现有的涡轮机，如涡轮机和压缩机，以提高转子的动态性能。 紧凑型对中支撑阻尼器可以包括具有在内部和外部直径周围围绕圆周间隔开的缓冲器的环，以在缓冲器之间形成弹簧元件。 定心支架可以提升挤压膜腔内的转子，并可以消除转子重量对阻尼器性能的影响。 定心支撑件可能在垂直方向上偏移，使转子居中在1g变形下，以消除压缩机或涡轮机护罩6点钟位置的摩擦。 切向槽可以设置在定心支撑外部缓冲器上，以便当定心支撑件偏转时允许油挤出以提供额外的粘性阻尼。 可以控制外保险杠高度以限制转子的机动偏转。

公开(公告)号：US20060204153A1

公开(公告)日：2006-09-14

申请号：US11078864

申请日：2005-03-10

申请人： Mohsiul Alam ,  Doug Spencer

发明人： Mohsiul Alam ,  Doug Spencer

IPC分类号： F16C27/00

CPC分类号： F01D25/164 ,  F05D2230/642 ,  F16C19/06 ,  F16C27/045 ,  F16C2360/23

摘要： A support for a bearing comprises a resilient ring having unevenly spaced inner and outer bumpers. The unevenly spaced bumpers provide anisotropy to the rotor to preclude non-synchronous vibration. The inner bumpers can be ground to provide a vertical offset of the rotor centerline to accommodate the deflection due to the rotor weight. A tangential groove in the outer bumper allows oil passage during ring deflection so that oil can be squeezed out under dynamic load, providing additional viscous damping to the rotor.

摘要翻译： 轴承的支撑件包括具有不均匀间隔的内部和外部缓冲器的弹性环。 不均匀的缓冲器为转子提供各向异性以排除非同步振动。 内部缓冲器可以被研磨以提供转子中心线的垂直偏移，以适应由于转子重量而引起的偏转。 外保险杠中的切向槽允许在环偏转期间油通过，使得油在动态载荷下被挤出，为转子提供额外的粘性阻尼。

公开(公告)号：US20070165971A1

公开(公告)日：2007-07-19

申请号：US11333711

申请日：2006-01-17

申请人： Mohsiul Alam ,  Doug Spencer

发明人： Mohsiul Alam ,  Doug Spencer

IPC分类号： F16C27/00

CPC分类号： F02C7/06 ,  F01D25/164 ,  F05D2240/53 ,  F16C19/26 ,  F16C27/045 ,  F16C33/6677 ,  F16C2360/23 ,  F16F15/0237 ,  Y02T50/671

摘要： A squeeze film damper is provided that includes a fluid source, a shaft, a bearing assembly, a static bearing support, and a dam. The shaft includes openings formed therein and an annular channel in communication therewith that is configured to receive fluid from the fluid source. The bearing assembly is disposed concentric to the shaft and includes an inner race coupled to the shaft, an outer race disposed concentric to the inner race, and a rolling element disposed between the inner and outer races. Each of the inner and outer races includes openings configured to receive fluid from the shaft opening. The static bearing support housing is spaced apart from the outer race to define a clearance therebetween. The dam is disposed adjacent the bearing assembly and extends radially inwardly relative to the bearing support housing defining a shelf for receiving the fluid from the race openings and directing the fluid into the clearance.

摘要翻译： 提供一种挤膜式阻尼器，其包括流体源，轴，轴承组件，静态轴承支撑件和坝。 轴包括形成在其中的开口和与其连通的环形通道，其构造成从流体源接收流体。 所述轴承组件与所述轴同心地设置并且包括联接到所述轴的内座圈，与所述内座圈同心设置的外座圈和设置在所述内座圈和所述外座圈之间的滚动元件。 内圈和外圈中的每一个包括构造成从轴开口接收流体的开口。 静态轴承支撑壳体与外圈间隔开以限定其间的间隙。 大坝相对于轴承组件设置并且相对于轴承支撑壳体径向向内延伸，该轴承支撑壳体限定用于接收来自座圈开口的流体并将流体引导到间隙中。

公开(公告)号：US20090269185A1

公开(公告)日：2009-10-29

申请号：US12111726

申请日：2008-04-29

申请人： Douglas Spencer ,  Mohsiul Alam ,  Griff Kinsinger

发明人： Douglas Spencer ,  Mohsiul Alam ,  Griff Kinsinger

IPC分类号： F01D25/04

CPC分类号： F01D25/164 ,  F16C19/06 ,  F16C27/045 ,  F16C2360/23 ,  Y02T50/671

摘要： Damping systems and engines including the damping systems are provided. In one embodiment, and by way of example only, the damping system includes a rotor, a bearing assembly mounted to the rotor, a spring cage disposed around the bearing assembly, an axially-extending housing surrounding the spring cage, a first squeeze film damper formed between the bearing assembly and the spring cage, and a second squeeze film damper formed between the spring cage and the axially-extending housing.

摘要翻译： 提供包括阻尼系统在内的阻尼系统和发动机。 在一个实施例中，仅作为示例，阻尼系统包括转子，安装到转子的轴承组件，围绕轴承组件设置的弹簧保持架，围绕弹簧保持架的轴向延伸壳体，第一挤压膜阻尼器 形成在轴承组件和弹簧保持架之间，以及形成在弹簧保持架和轴向延伸壳体之间的第二挤压薄膜缓冲器。

公开(公告)号：US20080267767A1

公开(公告)日：2008-10-30

申请号：US11742163

申请日：2007-04-30

申请人： Mohsiul Alam ,  Jack Moy ,  Thomas P. Swadener ,  James E. Franks

发明人： Mohsiul Alam ,  Jack Moy ,  Thomas P. Swadener ,  James E. Franks

IPC分类号： F04D29/10

CPC分类号： F01D11/003 ,  F01D25/183 ,  F05C2201/0466 ,  F16J15/0887

摘要： In one embodiment, and by way of example only, a seal is provided for sealing a hollow shaft, where the hollow shaft has an inner surface that may be uneven due to shot peening. The seal includes an axially extending ring section having a first end, a second end, an inner surface, and a disk section disposed substantially perpendicular to the ring section inner surface between the ring section first and second ends. The seal conforms to the shaft inner surface to stop oil leakage.

摘要翻译： 在一个实施例中，仅作为示例，提供用于密封空心轴的密封件，其中空心轴具有由于喷丸硬化而可能不均匀的内表面。 密封件包括轴向延伸的环形部分，其具有第一端，第二端，内表面和与环部分第一端和第二端之间的环部分内表面基本垂直的基板。 密封件符合轴内表面，以防止漏油。

公开(公告)号：US06682219B2

公开(公告)日：2004-01-27

申请号：US10115823

申请日：2002-04-03

申请人： Mohsiul Alam ,  Doug K. Spencer

发明人： Mohsiul Alam ,  Doug K. Spencer

IPC分类号： F16C2704

CPC分类号： F01D25/164 ,  F05D2230/64 ,  F05D2240/53 ,  F16C19/26 ,  F16C19/54 ,  F16C27/045 ,  F16C2360/23

摘要： An apparatus and method that provides a flexible anisotropic support, which may accommodate open, closed, or re-circulating squeeze film damper in parallel, has improved internal rolling element clearances, limits maneuver and blade loss responses by limiting rotor excursion, and has a rotor centering feature. This is accomplished through the combination of beam and ring arrangement, which provides support anisotropy that produces beneficial cross-coupling stiffness for the support to control synchronous and non-synchronous vibration.

摘要翻译： 提供柔性各向异性支撑件的装置和方法可平行地容纳打开，关闭或再循环的挤压薄膜阻尼器，具有改善的内部滚动元件间隙，通过限制转子偏移来限制机动和叶片损失响应，并具有转子 居中功能 这通过梁和环布置的组合来实现，其提供支撑各向异性，其为支撑件产生有利的交叉耦合刚度以控制同步和非同步振动。

公开(公告)号：US20120121446A1

公开(公告)日：2012-05-17

申请号：US13358368

申请日：2012-01-25

申请人： Walter Lee Meacham ,  Kostandin Gjika ,  Mohsiul Alam ,  Gerald D. LaRue

发明人： Walter Lee Meacham ,  Kostandin Gjika ,  Mohsiul Alam ,  Gerald D. LaRue

IPC分类号： F01D25/16 ,  F16C32/06

CPC分类号： F01D25/164 ,  F02C6/12 ,  F05D2220/40 ,  F05D2240/53 ,  F05D2240/54 ,  F16C17/02 ,  F16C17/18 ,  F16C19/184 ,  F16C27/02 ,  F16C27/045 ,  F16C27/06 ,  F16C32/06 ,  F16C33/10 ,  F16C33/1045 ,  F16C33/6659 ,  F16C35/10 ,  F16C35/12 ,  F16C2360/24 ,  Y10S384/901

摘要： An exemplary anisotropic member supports a semi-floating bearing in a bore and can reduce non-synchronous vibration of the bearing in the bore. An anisotropic member can include an annular body configured to receive a semi-floating bearing and to space the bearing a distance from a bore surface and can be configured to impart anisotropic stiffness and damping terms to the semi-floating bearing when positioned in the bore. Such a member is suitable for use in a rotating assembly for a turbocharger where the bearing may be a semi-floating bearing. Various exemplary members, bearings, housings, assemblies, etc., are disclosed.

摘要翻译： 示例性各向异性构件在孔中支撑半浮动轴承并且可以减小孔中的轴承的非同步振动。 各向异性构件可以包括构造成接收半浮动轴承并且使轴承与孔表面间隔一定距离的环形主体，并且可以构造成当定位在孔中时赋予半浮动轴承各向异性刚度和阻尼项。 这种构件适用于用于涡轮增压器的旋转组件，其中轴承可以是半浮动轴承。 公开了各种示例性构件，轴承，壳体，组件等。

公开(公告)号：US08118570B2

公开(公告)日：2012-02-21

申请号：US11930841

申请日：2007-10-31

申请人： Walter Lee Meacham ,  Mohsiul Alam ,  Gerald D. LaRue ,  Kostandin Gjika

发明人： Walter Lee Meacham ,  Mohsiul Alam ,  Gerald D. LaRue ,  Kostandin Gjika

IPC分类号： F04B17/02 ,  F16C32/06

CPC分类号： F01D25/164 ,  F02C6/12 ,  F05D2220/40 ,  F05D2240/53 ,  F05D2240/54 ,  F16C17/02 ,  F16C17/18 ,  F16C19/184 ,  F16C27/02 ,  F16C27/045 ,  F16C27/06 ,  F16C32/06 ,  F16C33/10 ,  F16C33/1045 ,  F16C33/6659 ,  F16C35/10 ,  F16C35/12 ,  F16C2360/24 ,  Y10S384/901

摘要： An exemplary anisotropic member (625, 1200, 1600, 1700, 1800, 1950) supports a bearing in a bore and can reduce non-synchronous vibration (NSV) of the bearing in the bore. An exemplary anisotropic member includes an annular body configured to receive a bearing and to space the bearing a distance from a bore surface and is configured to impart anisotropic stiffness and damping terms to the bearing when positioned in the bore. Such a member is suitable for use in a rotating assembly for a turbocharger where the bearing may be a floating bearing, a semi-floating bearing or a ball bearing. Various exemplary members, bearings, housings, assemblies, etc., are disclosed.

摘要翻译： 示例性各向异性构件（625,1200,1600,1700,1800,1950）支撑在孔中的轴承并且可以减小孔中的轴承的非同步振动（NSV）。 示例性的各向异性构件包括环形体，其构造成接收轴承并且使轴承与孔表面间隔一定距离，并且构造成当定位在孔中时赋予轴承各向异性刚度和阻尼项。 这种构件适用于涡轮增压器的旋转组件，其中轴承可以是浮动轴承，半浮动轴承或滚珠轴承。 公开了各种示例性构件，轴承，壳体，组件等。

公开(公告)号：US20090060717A1

公开(公告)日：2009-03-05

申请号：US11769515

申请日：2007-06-27

申请人： Mark A. Shilo ,  Paul B. Talbert ,  Mohsiul Alam

发明人： Mark A. Shilo ,  Paul B. Talbert ,  Mohsiul Alam

IPC分类号： F01D25/04 ,  G01M1/22 ,  G01B7/00

CPC分类号： F02C7/36

摘要： A synchronous signal generator is provided for use in conjunction with an aircraft engine having a spool and an engine output shaft driven by the spool. The synchronous signal generator includes a generator housing, a generator output member rotatably mounted in the generator housing, a once-per-revolution timing mark on the generator output member, and conversion gearing disposed within the housing and configured to couple the engine output shaft to the generator output member. The conversion gearing rotates the generator output member at substantially the same rotational frequency as the spool when the conversion gearing is coupled to the engine output shaft.

摘要翻译： 提供同步信号发生器，用于与具有由卷轴驱动的线轴和发动机输出轴的飞机发动机结合使用。 同步信号发生器包括发电机壳体，发电机输出构件，可旋转地安装在发电机壳体中，发电机输出构件上的每转一次定时标记，以及设置在壳体内并被配置为将发动机输出轴耦合到 发电机输出构件。 当转换齿轮联接到发动机输出轴时，转换齿轮将发电机输出构件以与线轴基本相同的旋转频率旋转。