公开(公告)号：US4557664A

公开(公告)日：1985-12-10

申请号：US484529

申请日：1983-04-13

申请人： Alan H. Tuttle ,  James K. Leonard ,  Shireesh A. Agharkar ,  John Waggott

发明人： Alan H. Tuttle ,  James K. Leonard ,  Shireesh A. Agharkar ,  John Waggott

IPC分类号： F01D3/04 ,  F01D25/16 ,  F01D3/00

CPC分类号： F01D3/04 ,  F01D25/168

摘要： An overhung steam turbine is described which features a seal assembly and a bearing assembly to minimize axial shaft movement. The seal assembly forms a pressure barrier between a relatively low vacuum exhaust region and an exhaust cavity disposed at one end of the rotor shaft to minimize the pressure differential across the ends of the shaft and the resultant thrust force of the rotor shaft against the turbine casing. A bearing assembly is provided which includes a pair of journal bearings and a pair of oppositely disposed thrust bearings. In one embodiment one thrust bearing is connected by an adapter ring which is mounted to a horizontally split bearing casing. In another embodiment, the thrust bearing is carried by one of the journal bearings. The journal bearings are preferrably connected by horizontally split ring bearings to facilitate insertion and removal of the bearings without removing the overhung shaft.

摘要翻译： 描述了一种悬挂的蒸汽轮机，其特征在于具有密封组件和轴承组件以最小化轴向运动。 密封组件在相对较低的真空排气区域和设置在转子轴的一端处的排气腔之间形成压力屏障，以最小化轴的两端的压力差和转子轴对涡轮机壳体的合力推力 。 提供一种轴承组件，其包括一对轴颈轴承和一对相对设置的推力轴承。 在一个实施例中，一个推力轴承通过适配环连接，该适配环安装在水平分割的轴承箱上。 在另一个实施例中，止推轴承由一个轴颈轴承承载。 轴颈轴承优选地通过水平分开的环形轴承连接，以便于在不移除悬挂轴的情况下插入和移除轴承。

公开(公告)号：US5277403A

公开(公告)日：1994-01-11

申请号：US60961

申请日：1993-05-12

申请人： John Waggott ,  George M. Lucas

发明人： John Waggott ,  George M. Lucas

IPC分类号： F01D17/10 ,  F01L35/02 ,  F16K1/36 ,  F16K31/12 ,  F16K39/02 ,  F16K1/00

CPC分类号： F16K39/022 ,  F01L35/02

摘要： A substantially cylindrical, plug-type configuration of the element offers a mass which is less responsive to non-uniform and unsteady pressures, and channeling therein opens centrally, and about the periphery thereof, onto a recess formed in an end of the element which closes onto a valve seat. The channeling and recess are cooperative to assure that the balance-end of the element will have average, representative pressures conducted thereto.

摘要翻译： 元件的基本上圆柱形的插头型构造提供了对不均匀和不稳定压力响应较小的质量，并且其中的沟槽在其中开始并且围绕其周边在形成在元件的端部中的凹部上闭合 到阀座上。 渠道和沟槽是合作的，以确保元素的平衡端将具有平均的代表性压力。

公开(公告)号：US6145844A

公开(公告)日：2000-11-14

申请号：US78092

申请日：1998-05-13

申请人： John Waggott

发明人： John Waggott

IPC分类号： F01D11/02 ,  F16J15/44 ,  F16J15/447

CPC分类号： F01D11/025 ,  F16J15/442 ,  F16J15/445

摘要： A self-aligning, sealing assembly in accordance with the present invention includes a sealing apparatus and at least one preloading device. The sealing assembly is mounted in machinery which has a rotating shaft and a stationary member with an inner surface which is spaced from and surrounds a shaft. A slot is located in and extends around the inner surface of the stationary member. The slot has an upstream surface, a downstream surface, and an outer surface. The sealing apparatus is adjustably disposed in the slot and has an inner surface, an outer surface, an upstream surface and a downstream surface. Labyrinth seal teeth extend radially inward from the inner surface of the sealing apparatus. Each tooth is radially spaced from the shaft to form a non-contact seal. A space between the outer surface of the ring and the inner surface of the slot is designed to accommodate radial movement of the ring resulting from radial movement of the shaft. The preloading device has first and second ends, with the first end abutting the upstream surface of the slot and the second end abutting an opposing surface of the sealing apparatus. The preloading device ensures sufficient frictional forces between the ring and the slot to support the weight of the sealing apparatus when an insufficient pressure difference exists.

摘要翻译： 根据本发明的自对准密封组件包括密封装置和至少一个预加载装置。 密封组件安装在具有旋转轴和固定构件的机械中，该内部表面与轴间隔开并围绕轴。 槽位于静止构件的内表面并且围绕固定构件的内表面延伸。 槽具有上游表面，下游表面和外表面。 密封装置可调节地设置在槽中并且具有内表面，外表面，上游表面和下游表面。 迷宫式密封齿从密封装置的内表面径向向内延伸。 每个齿与轴径向间隔开以形成非接触式密封。 环的外表面和槽的内表面之间的空间被设计成适应由轴的径向运动引起的环的径向移动。 预压装置具有第一端和第二端，其第一端邻接槽的上游表面，第二端邻接密封装置的相对表面。 当存在不足的压力差时，预紧装置确保了环和槽之间的足够的摩擦力以支撑密封装置的重量。

公开(公告)号：US5447413A

公开(公告)日：1995-09-05

申请号：US282221

申请日：1994-07-28

申请人： William Maier ,  John Waggott

发明人： William Maier ,  John Waggott

IPC分类号： F01D5/14 ,  F01D1/00

CPC分类号： F01D5/143 ,  Y10S415/914

摘要： Outer and inner endwall sections are so profiled that, essentially, the flowpath is straight or flat in the direction of flow. The profiles are defined by lines of revolution about a centerline of a turbine, and shaped as projections upstream from blade tips or bases, tangent to such blade tips or bases, axially, and radially, conforming to a mean obtaining between convex and concave surfaces of the nozzle.

摘要翻译： 外端壁和内端壁部分的外形尺寸基本上在流动方向上是直的或平坦的。 轮廓由绕涡轮机中心线的旋转线限定，并且形成为与刀片尖端或基座相对的刀片顶端或底座上方的突出部分，其轴向和径向方向与在凸面和凹面之间获得的平均值 喷嘴。