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：US4500096A

公开(公告)日：1985-02-19

申请号：US468348

申请日：1983-02-22

申请人： Alan H. Tuttle ,  James K. Leonard ,  Henry J. Dlugosz

发明人： Alan H. Tuttle ,  James K. Leonard ,  Henry J. Dlugosz

IPC分类号： F01D11/02 ,  F16J15/44 ,  F16J15/48

CPC分类号： F01D11/02 ,  F16J15/44 ,  Y10S277/925

摘要： A three part split shaft seal assembly is disclosed which is particularly adapted for use in an overhung steam turbine. In one embodiment the assembly is located between the shaft opening of the turbine case and a horizontally split shaft bearing case. To facilitate axial insertion and removal of the assembly, the seal assembly is formed from three pairs of split ring seals. Proper axial alignment is maintained by stand-offs or dowel pins located between two of the split ring seals. In one embodiment a snap ring received within an annular groove in the turbine housing holds two of the seal rings against axial movement. In that embodiment set screws carried in one ring seal are used to seat and align two ring seals of the assembly relative to the turbine casing. A pin holds two of the ring seals against relative rotational movement. In another embodiment, a split spacer ring is used to maintain correct spacing and the third seal is used to position and hold the other two seals axially aligned to each other.

摘要翻译： 公开了一种三部分分裂轴密封组件，其特别适用于悬挂式蒸气轮机。 在一个实施例中，组件位于涡轮壳体的轴开口和水平分裂的轴轴承箱之间。 为了促进组件的轴向插入和移除，密封组件由三对分开的环形密封件形成。 通过位于两个开口环密封件之间的支座或定位销来维持正确的轴向对齐。 在一个实施例中，容纳在涡轮壳体中的环形槽内的卡环保持两个密封环抵抗轴向运动。 在该实施例中，承载在一个环形密封件中的定位螺钉被用于相对于涡轮机壳体安置和对准组件的两个环形密封件。 针头保持两个环形密封件抵抗相对旋转运动。 在另一个实施例中，分隔间隔环用于保持正确的间隔，并且第三密封件用于定位和保持彼此轴向对准的其它两个密封件。