公开(公告)号：US07510380B2

公开(公告)日：2009-03-31

申请号：US11213178

申请日：2005-08-26

申请人： Mohsiul Alam ,  Scott J. Freestone ,  Walter L. Meacham ,  Paul B. Talbert

发明人： Mohsiul Alam ,  Scott J. Freestone ,  Walter L. Meacham ,  Paul B. Talbert

IPC分类号： F01D5/02

CPC分类号： F01D5/025 ,  F01D5/027 ,  F01D5/066 ,  F05D2230/64 ,  F05D2260/15 ,  F05D2260/31

摘要： The present invention provides apparatus and methods for balancing stacked components of rotating machinery, such as in a gas turbine engine. Unlike conventional processes and devices for balancing stacked components, the present invention may use a single non-parallel spacer for obtaining an acceptable and repeatable component group balance. The non-parallel spacer may be used to compensate for rotor bow and the associated imbalance of the rotor group. By indexing a spacer with non-parallel faces, situated terminally at the end of the stack adjacent to the nut, rotor balance can be achieved without disassembly of the rotor group and clocking of its individual components. A spacer may also be disposed at any one or more of the interfaces between various components in the stack.

摘要翻译： 本发明提供了用于平衡诸如在燃气涡轮发动机中的旋转机械的堆叠部件的装置和方法。 与用于平衡堆叠部件的常规工艺和装置不同，本发明可以使用单个非平行间隔件来获得可接受和可重复的部件组平衡。 非平行间隔件可用于补偿转子弓和转子组的相关不平衡。 通过将具有非平行面的间隔物分度，位于与螺母相邻的堆叠的端部处，可以实现转子平衡而不拆卸转子组并对其各个部件进行计时。 间隔物也可以设置在堆叠中各种组分之间的任何一个或多个界面处。

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。

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：US20130294917A1

公开(公告)日：2013-11-07

申请号：US13465534

申请日：2012-05-07

申请人： Mohsiul Alam

发明人： Mohsiul Alam

IPC分类号： F04D29/04

CPC分类号： F01D25/164 ,  F05D2260/96 ,  F05D2270/301 ,  F05D2270/304 ,  F16C19/26 ,  F16C27/045 ,  F16C2360/23 ,  Y02T50/671

摘要： An apparatus includes a rotor group rotatable within the apparatus and a bearing assembly supporting the rotor group. A support structure supports the bearing assembly and is fixed in the apparatus. The support structure includes a support housing, an anisotropic support that engages the bearing assembly and the support housing, and a squeeze film cavity that is defined between the anisotropic support and the support housing. A damper fluid supply line is in fluid communication with the squeeze film cavity. A fluid interruption device is disposed in the damper fluid supply line. A method of damping the apparatus includes supplying fluid under pressure to the squeeze film cavity through the damper fluid supply line. Upon surpassing a predetermined value of a variable correlated to rotational speed of the rotor group, the fluid flow to the squeeze film cavity is interrupted with the fluid interruption device.

摘要翻译： 一种装置包括可在该装置内旋转的转子组和支承转子组的轴承组件。 支撑结构支撑轴承组件并固定在设备中。 支撑结构包括支撑壳体，接合轴承组件和支撑壳体的各向异性支撑件，以及限定在各向异性支撑件和支撑壳体之间的挤压膜腔。 阻尼器流体供应管线与挤压膜腔体流体连通。 流体中断装置设置在阻尼器流体供应管线中。 一种阻尼装置的方法包括：通过阻尼流体供应管线向挤压膜腔提供压力下的流体。 当超过与转子组的转速相关的变量的预定值时，流体中断装置中断到挤压膜腔的流体流动。

公开(公告)号：US08342796B2

公开(公告)日：2013-01-01

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：US07435052B2

公开(公告)日：2008-10-14

申请号：US11134177

申请日：2005-05-20

申请人： Doug K. Spencer ,  Mohsiul Alam ,  Mingfong F. Hwang

发明人： Doug K. Spencer ,  Mohsiul Alam ,  Mingfong F. Hwang

IPC分类号： F01D25/16

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。