公开(公告)号：US20130019600A1

公开(公告)日：2013-01-24

申请号：US13185145

申请日：2011-07-18

申请人： Sudhakar Neeli ,  Joshy John ,  Antanu Sadhu

发明人： Sudhakar Neeli ,  Joshy John ,  Antanu Sadhu

IPC分类号： F01K23/06

CPC分类号： F01D25/30 ,  F01K9/00 ,  F05D2220/31

摘要： An exhaust arrangement for a turbine is provided having an inner turbine casing, a condenser, an exhaust arrangement structure, and a bearing cone. The inner turbine casing includes a plurality of last stage buckets. A steam flow passes through the inner turbine casing and out of the plurality of last stage buckets. The condenser for receives the steam flow. The exhaust arrangement structure has a diffuser, a lower section and an upper section. The lower section has an exhaust section. The lower section receives the steam flow from the last stage buckets of the inner turbine casing through the diffuser and guides the steam flow out of the exhaust section in a direction generally towards the condenser. The upper section has a receiving section and a guiding section.

摘要翻译： 提供了一种用于涡轮机的排气装置，其具有内涡轮机壳体，冷凝器，排气装置结构和轴承锥体。 内涡轮机壳体包括多个最后一级铲斗。 蒸汽流通过内涡轮机壳体并流出多个最后级的料斗。 用于接收蒸汽流的冷凝器。 排气装置结构具有扩散器，下部和上部。 下部具有排气部分。 下部通过扩散器接收来自内涡轮机壳体的最后级斗的蒸汽流，并将蒸汽流沿着大致朝向冷凝器的方向引导出排气部分。 上部具有接收部和引导部。

公开(公告)号：US20120126486A1

公开(公告)日：2012-05-24

申请号：US12951128

申请日：2010-11-22

申请人： Sudhakar Neeli ,  Joshy John

发明人： Sudhakar Neeli ,  Joshy John

IPC分类号： F16J15/447 ,  B23P11/00

CPC分类号： F01D11/02 ,  F05D2220/31 ,  F05D2230/60 ,  F16J15/4472

摘要： A method of assembling a sealing assembly for use in a turbomachine includes providing a rotatable element that includes an end portion with a plurality of grooves partially extending circumferentially about a portion of an outer surface of the end portion of the rotatable element. The method also includes providing a stationary portion that includes an upper section and a lower section. The method further includes inserting at least a portion of the end portion of the rotatable element into the lower section. The method also includes coupling the upper section to the lower section, thereby defining a rotor shaft cavity. The end portion of the rotatable element at least partially extends through the rotor shaft cavity, thereby defining a clearance between the end portion of the rotatable element and the stationary portion.

摘要翻译： 一种组装用于涡轮机的密封组件的方法包括提供可旋转元件，该可旋转元件包括具有多个槽的端部，所述多个槽部围绕可旋转元件的端部的外表面的一部分圆周地延伸。 该方法还包括提供包括上部和下部的固定部分。 该方法还包括将可旋转元件的端部的至少一部分插入下部。 该方法还包括将上部部分联接到下部部分，从而限定转子轴腔。 可旋转元件的端部至少部分地延伸穿过转子轴腔，从而在可旋转元件的端部与固定部分之间形成间隙。

公开(公告)号：US08434766B2

公开(公告)日：2013-05-07

申请号：US12858701

申请日：2010-08-18

申请人： Xiaoqiang Zeng ,  Jonathon Edward Slepski ,  Tao Guo ,  Joshy John ,  Sudhakar Neeli

发明人： Xiaoqiang Zeng ,  Jonathon Edward Slepski ,  Tao Guo ,  Joshy John ,  Sudhakar Neeli

IPC分类号： F16J15/447

CPC分类号： F01D11/001 ,  F01D11/02 ,  F05D2250/232 ,  F16J15/441 ,  F16J15/4472

摘要： A seal is provided for preventing axial leakage through a radial gap between a stationary structure and a rotating structure. The radial gap is defined by an inner radial surface opposing an outer radial surface across the radial gap. The seal includes at least one land disposed on one of the inner radial surface and outer radial surface. At least one first tooth and at least one second tooth project from the other of the radial surfaces. The second tooth is shorter than the first tooth. At least one of the first tooth and second tooth, is configured to extend at an angle upstream. This angle is defined between a radial surface from which the first or second tooth projects and an upstream surface of the same tooth. The angle is less than or equal to about 80 degrees.

摘要翻译： 提供密封件以防止通过固定结构和旋转结构之间的径向间隙的轴向泄漏。 径向间隙由跨越径向间隙的与外径向表面相对的内径向表面限定。 密封件包括设置在内径向表面和外径向表面中的一个上的至少一个区域。 至少一个第一齿和至少一个第二齿从另一个径向表面突出。 第二个齿比第一个牙齿短。 第一齿和第二齿中的至少一个构造成在上游以一定角度延伸。 该角度限定在第一或第二齿突出的径向表面与同一牙齿的上游表面之间。 该角度小于或等于约80度。

公开(公告)号：US20120121404A1

公开(公告)日：2012-05-17

申请号：US12945917

申请日：2010-11-15

申请人： Sudhakar Neeli ,  Joshy John

发明人： Sudhakar Neeli ,  Joshy John

IPC分类号： F01D25/24

CPC分类号： F01D25/30 ,  F05D2220/31 ,  F05D2250/11

摘要： The present application provides a diffuser for an exhaust hood of a steam turbine. The diffuser may include a first end adjacent to a last bucket and a second end downstream of a steam guide and adjacent to a bearing cone. An exhaust flow path extends therethrough. The second end may include an axial extension enlarging the exhaust flow path.

摘要翻译： 本申请提供了一种用于蒸汽轮机的排气罩的扩散器。 扩散器可以包括与最后一个铲斗相邻的第一端和蒸汽引导件的下游的第二端并与轴承锥相邻。 排气流路延伸穿过其中。 第二端可以包括扩大排气流动路径的轴向延伸。

公开(公告)号：US20120091662A1

公开(公告)日：2012-04-19

申请号：US12907452

申请日：2010-10-19

申请人： Sudhakar Neeli ,  Joshy John

发明人： Sudhakar Neeli ,  Joshy John

IPC分类号： F16J15/447

CPC分类号： F16J15/4472 ,  F01D11/02 ,  F05D2220/31

摘要： A labyrinth seal system is disclosed, including a stationary component having a plurality of radially inwardly projecting, axially spaced teeth extending therefrom; and a rotor having a plurality of radially outwardly projecting, axially spaced protrusions, each protrusion having a low pressure side and a high pressure side, wherein the low pressure side of at least one protrusion extends farther in a radial direction than the high pressure side.

摘要翻译： 公开了一种迷宫式密封系统，其包括具有从其延伸的多个径向向内突出的轴向隔开的齿的固定部件; 以及转子，其具有多个径向向外突出的轴向隔开的突起，每个突起具有低压侧和高压侧，其中至少一个突起的低压侧在径向方向上比高压侧更远地延伸。

公开(公告)号：US20120043728A1

公开(公告)日：2012-02-23

申请号：US12858701

申请日：2010-08-18

申请人： Xiaoqiang Zeng ,  Jonathon Edward Slepski ,  Tao Guo ,  Joshy John ,  Sudhakar Neeli

发明人： Xiaoqiang Zeng ,  Jonathon Edward Slepski ,  Tao Guo ,  Joshy John ,  Sudhakar Neeli

IPC分类号： F16J15/447

CPC分类号： F01D11/001 ,  F01D11/02 ,  F05D2250/232 ,  F16J15/441 ,  F16J15/4472

摘要： A seal is provided for preventing axial leakage through a radial gap between a stationary structure and a rotating structure. The radial gap is defined by an inner radial surface opposing an outer radial surface across the radial gap. The seal includes at least one land disposed on one of the inner radial surface and outer radial surface. At least one first tooth and at least one second tooth project from the other of the radial surfaces. The second tooth is shorter than the first tooth. At least one of the first tooth and second tooth, is configured to extend at an angle upstream. This angle is defined between a radial surface from which the first or second tooth projects and an upstream surface of the same tooth. The angle is less than or equal to about 80 degrees.

摘要翻译： 提供密封件以防止通过固定结构和旋转结构之间的径向间隙的轴向泄漏。 径向间隙由跨越径向间隙的与外径向表面相对的内径向表面限定。 密封件包括设置在内径向表面和外径向表面中的一个上的至少一个区域。 至少一个第一齿和至少一个第二齿从另一个径向表面突出。 第二个齿比第一个牙齿短。 第一齿和第二齿中的至少一个构造成在上游以一定角度延伸。 该角度限定在第一或第二齿突出的径向表面与同一牙齿的上游表面之间。 该角度小于或等于约80度。

公开(公告)号：US08870532B2

公开(公告)日：2014-10-28

申请号：US12945917

申请日：2010-11-15

申请人： Sudhakar Neeli ,  Joshy John

发明人： Sudhakar Neeli ,  Joshy John

IPC分类号： F01D25/24 ,  F01D25/30

CPC分类号： F01D25/30 ,  F05D2220/31 ,  F05D2250/11

摘要： The present application provides a diffuser for an exhaust hood of a steam turbine. The diffuser may include a first end adjacent to a last bucket and a second end downstream of a steam guide and adjacent to a bearing cone. An exhaust flow path extends therethrough. The second end may include an axial extension enlarging the exhaust flow path.

摘要翻译： 本申请提供了一种用于蒸汽轮机的排气罩的扩散器。 扩散器可以包括与最后一个铲斗相邻的第一端和蒸汽引导件的下游的第二端并与轴承锥相邻。 排气流路延伸穿过其中。 第二端可以包括扩大排气流动路径的轴向延伸。

公开(公告)号：US08740563B2

公开(公告)日：2014-06-03

申请号：US12951128

申请日：2010-11-22

申请人： Sudhakar Neeli ,  Joshy John

发明人： Sudhakar Neeli ,  Joshy John

IPC分类号： F04D29/10

CPC分类号： F01D11/02 ,  F05D2220/31 ,  F05D2230/60 ,  F16J15/4472

摘要： A method of assembling a sealing assembly for use in a turbomachine includes providing a rotatable element that includes an end portion with a plurality of grooves partially extending circumferentially about a portion of an outer surface of the end portion of the rotatable element. The method also includes providing a stationary portion that includes an upper section and a lower section. The method further includes inserting at least a portion of the end portion of the rotatable element into the lower section. The method also includes coupling the upper section to the lower section, thereby defining a rotor shaft cavity. The end portion of the rotatable element at least partially extends through the rotor shaft cavity, thereby defining a clearance between the end portion of the rotatable element and the stationary portion.

摘要翻译： 一种组装用于涡轮机的密封组件的方法包括提供可旋转元件，该可旋转元件包括具有多个槽的端部，所述多个槽部围绕可旋转元件的端部的外表面的一部分圆周地延伸。 该方法还包括提供包括上部和下部的固定部分。 该方法还包括将可旋转元件的端部的至少一部分插入下部。 该方法还包括将上部部分联接到下部部分，从而限定转子轴腔。 可旋转元件的端部至少部分地延伸穿过转子轴腔，从而在可旋转元件的端部与固定部分之间形成间隙。

公开(公告)号：US08475125B2

公开(公告)日：2013-07-02

申请号：US12758919

申请日：2010-04-13

申请人： Sudhakar Neeli ,  Prakash Bavanjibhai Dalsania

发明人： Sudhakar Neeli ,  Prakash Bavanjibhai Dalsania

IPC分类号： F01D25/30

CPC分类号： F01D5/143 ,  F01D5/225 ,  F01D25/30 ,  F05D2210/42 ,  F05D2220/31 ,  F05D2240/127 ,  Y10T29/49323

摘要： Tip shrouds on last stage buckets for condensing steam turbines may create significant blockage and form a vortex at the wall of the steam guide of the diffuser, causing the steam flow to separate from the wall of the steam guide. Vortex formation reduces the effective flow area for the remaining fluid to diffuse, causing poor recovery. An inward radial depression is provided of a predetermined depth and distance along an outer steam guide, which redirects the tip leakage flows slightly downward, reducing a shroud blockage effect. This deflection assists the main flow in rejoining the steam guide, thereby making the diffuser more effective.

摘要翻译： 用于冷凝蒸汽涡轮机的最后一级铲斗上的尖端罩可能产生明显的堵塞并在扩散器的蒸汽导管的壁处形成涡流，导致蒸汽流与蒸汽导管的壁分离。 漩涡形成减少了剩余流体扩散的有效流动面积，导致恢复不良。 向内的径向凹陷沿着外部蒸汽导管设置有预定的深度和距离，其将尖端泄漏流向稍微向下重定向，从而减少护罩堵塞效应。 该偏转有助于重新连接蒸汽导管的主流，从而使扩散器更有效。

公开(公告)号：US20130243564A1

公开(公告)日：2013-09-19

申请号：US13419860

申请日：2012-03-14

申请人： Prakash Bavanjibhai Dalsania ,  Joseph Anthony Cotroneo ,  Sudhakar Neeli

发明人： Prakash Bavanjibhai Dalsania ,  Joseph Anthony Cotroneo ,  Sudhakar Neeli

IPC分类号： F01D1/00 ,  F01D25/00

CPC分类号： F01D25/30 ,  F01D5/143 ,  F01D5/225 ,  F01D9/02

摘要： An exhaust diffuser for a turbine includes an inlet configured to receive exhaust gas from a last stage bucket of the turbine and an exhaust gas guide surface configured to guide the exhaust gas. A curvature of the guide surface comprises a first angle with respect to an axis of the turbine and a ratio of a guide surface axial length to the active length of the last stage bucket which is between about 0.45 to 0.70. A method of diffusing exhaust of a turbine includes energizing a boundary layer along a curved exhaust flow guide surface of an exhaust diffuser with over tip leakage of a last stage bucket of the turbine.

摘要翻译： 用于涡轮机的排气扩散器包括被配置为接收来自涡轮机的最后级别的排气的入口和被构造成引导废气的废气引导表面的入口。 引导表面的曲率包括相对于涡轮机的轴线的第一角度和引导表面轴向长度与最后一级铲斗的有效长度的比率在约0.45至0.70之间。 一种扩散涡轮机排气的方法包括沿着涡轮机的最后一级铲斗的尖端泄漏使排气扩散器的弯曲排气流引导表面激励边界层。