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1. 发明授权

US5391052A Impingement cooling and cooling medium retrieval system for turbine shrouds and methods of operation 失效
标题翻译：用于涡轮罩的冲击冷却和冷却介质回收系统及其操作方法
公开(公告)号：US5391052A
公开(公告)日：1995-02-21
申请号：US152363
申请日：1993-11-16
申请人： Victor H. Correia , Theresa A. Brown , R. Paul Chiu
发明人： Victor H. Correia , Theresa A. Brown , R. Paul Chiu
IPC分类号： F01D11/10 , F01D11/24 , F01D25/12
CPC分类号： F01D11/10 , F01D11/24 , F05D2260/201 , F05D2260/2322
摘要： The steam impingement cooling and retrieval system for turbine shrouds includes a plurality of circumferentially spaced housings about a turbine shroud, each housing being divided by an impingement plate defining first and second chambers on opposite sides of the housing. Steam supplied into a first chamber passes through a plurality of apertures formed in the impingement plate into the second chamber for impingement cooling of the shroud surface forming the opposite wall of the housing. Post-impingement steam passes from the compartment into a manifold for flow through and exhaust passage. In one form, a plurality of compartments are formed in the impingement plate. A first set of the plurality of compartments include through apertures for delivering steam from the first chamber into the second chamber. The second set of compartments communicates only with the second chamber and an exhaust passage whereby post-impingement steam passes from the second chamber through apertures of the impingement plate into the second set of compartments for flow to a manifold at the end wall of the housing for delivery to the exhaust passage.
摘要翻译：用于涡轮机护罩的蒸汽冲击冷却和回收系统包括围绕涡轮机护罩的多个周向间隔开的壳体，每个壳体由限定在壳体的相对侧上的第一和第二腔室的冲击板分隔。供应到第一室的蒸汽穿过形成在冲击板中的多个孔进入第二室，用于冲击冷却形成壳体的相对壁的护罩表面。后冲击蒸汽从隔室进入歧管以流过和排出通道。在一种形式中，在冲击板中形成多个隔室。多个隔室的第一组包括用于将蒸汽从第一室输送到第二室中的通孔。第二组隔间仅与第二腔室和排气通道连通，由此后冲击蒸汽从第二腔室通过冲击板的孔通入第二组隔室，以流动到壳体的端壁处的歧管输送到排气通道。

2. 发明授权

US5320483A Steam and air cooling for stator stage of a turbine 失效
标题翻译：涡轮定子级的蒸汽和空气冷却
公开(公告)号：US5320483A
公开(公告)日：1994-06-14
申请号：US996931
申请日：1992-12-30
申请人： Francisco J. Cunha , R. Paul Chiu
发明人： Francisco J. Cunha , R. Paul Chiu
IPC分类号： F01D9/02 , F01D5/18 , F01D9/04 , F02C7/16 , F02C7/18 , F01D9/06
CPC分类号： F01D5/187 , F02C7/18 , F05D2240/81 , F05D2260/201 , F05D2260/202 , F05D2260/2212 , F05D2260/2322
摘要： The second-stage nozzles include a plurality of stator vanes 10 having first, second, third, fourth and fifth passages 40, 42, 44, 46 and 48, respectively, for cooling the vanes. The first and fourth passages have a steam inlet along an outer sidewall 14 and a junction box 70 along the inner sidewall 12 for returning steam to the second passage 42. The third passage 44 has a contour corresponding to the contour of the leading edge and impingement steam is directed through openings in a partition 52, cooling the leading edge. Steam flows from the third passage 44 directly into the return passage 42 and also into a channel 64 for cooling the inner sidewall 12. Cooling air flows through fifth passage 48 radially inwardly through the inner sidewall 12 into a cavity 72 in the diaphragm 32 for flow axially outwardly into wheel cavities 86 and 88.
摘要翻译：第二级喷嘴包括分别具有用于冷却叶片的第一，第二，第三，第四和第五通道40,42,44,46和48的多个定子叶片10。第一和第四通道具有沿着外侧壁14的蒸汽入口和沿着内侧壁12的接线盒70，用于将蒸汽返回到第二通道42.第三通道44具有对应于前缘和冲击的轮廓的轮廓蒸汽通过分隔件52中的开口引导，冷却前缘。蒸汽从第三通道44直接流入返回通道42并且还流入用于冷却内侧壁12的通道64.冷却空气流经第五通道48径向向内通过内侧壁12进入隔膜32中的空腔72以用于流动轴向向外进入轮腔86和88。

3. 发明授权

US5536143A Closed circuit steam cooled bucket 失效
标题翻译：闭路蒸汽冷却桶
公开(公告)号：US5536143A
公开(公告)日：1996-07-16
申请号：US414700
申请日：1995-03-31
申请人： Ariel Jacala , Richard M. Davis , Michael A. Sullivan , R. Paul Chiu , Fred Staub
发明人： Ariel Jacala , Richard M. Davis , Michael A. Sullivan , R. Paul Chiu , Fred Staub
IPC分类号： F01D5/18 , F01D25/12 , F02C7/18
CPC分类号： F01D5/187 , F05D2260/2212
摘要： In a gas turbine bucket having a shank portion, a radial tip portion and an airfoil having leading and trailing edges and pressure and suction surfaces, and an internal fluid cooling circuit, an improvement wherein the internal fluid cooling circuit has a serpentine configuration including plural radial outflow passages and plural radial inflow passages. The radial outflow passages, in one example, are shaped to have aspect ratios of about 3.3 to 1 and Buoyancy Numbers of 0.80. A method of determining a configuration for steam cooling passages for a bucket stage in a gas turbine is also provided which includes, in one example, the steps of:a) determining combustion gas inlet temperature and mass flow rate of combustion gases passing through the gas turbine stage;b) taking into account Coriolis and buoyancy secondary flow effects in the steam coolant caused by rotation of the bucket stage; andc) configuring the radial outflow coolant passages to have a size and shape sufficient to produce aspect ratios of about 3.3 to 1 and Buoyancy Numbers in the radial outflow passages of 0.80.
摘要翻译：在具有柄部，径向前端部分和具有前缘和后缘以及压力和吸力表面的翼型和内部流体冷却回路的燃气涡轮机桶中，其中内部流体冷却回路具有包括多个径向的蛇形结构流出通道和多个径向流入通道。在一个示例中，径向流出通道被成形为具有约3.3比1的纵横比和<0.15或> 0.80的浮力数。还提供了一种确定燃气轮机中用于铲斗级的蒸汽冷却通道的构造的方法，在一个示例中包括以下步骤：a）确定通过气体的燃烧气体的燃烧气体入口温度和质量流量涡轮级; b）考虑由铲斗级旋转引起的蒸汽冷却剂中的科里奥利和浮力二次流动作用; 以及c）将径向流出冷却剂通道配置成具有足以产生约3.3比1的纵横比和径向流出通道中的浮力数<0.15或> 0.80的尺寸和形状。

4. 发明授权

US6131910A Brush seals and combined labyrinth and brush seals for rotary machines 失效
标题翻译：刷子密封件和旋转机器的组合式迷宫式和刷式密封件
公开(公告)号：US6131910A
公开(公告)日：2000-10-17
申请号：US855013
申请日：1997-05-13
申请人： Bharat S. Bagepalli , R. Paul Chiu , Robert Harold Cromer , Gregory Allan Crum , Osman Saim Dinc , Anthony Holmes Furman , Paul Thomas Marks , Rudolf Matthias Markytan , David Robert Skinner , Norman Arnold Turnquist , Christopher Edward Wolfe
发明人： Bharat S. Bagepalli , R. Paul Chiu , Robert Harold Cromer , Gregory Allan Crum , Osman Saim Dinc , Anthony Holmes Furman , Paul Thomas Marks , Rudolf Matthias Markytan , David Robert Skinner , Norman Arnold Turnquist , Christopher Edward Wolfe
IPC分类号： F01D11/00 , F01D11/02 , F01D11/08 , F01D11/12 , F16J15/32 , F16J15/44 , F16J15/447
CPC分类号： F16J15/442 , F01D11/001 , F01D11/02 , F01D11/08 , F01D11/12 , F01D11/127 , F01D5/225 , F01D5/3046 , F16J15/3288 , F16J15/4472 , F05D2240/56 , F05D2250/182 , F05D2300/6012
摘要： Brush seals are retrofitted into existing turbine labyrinth seal rings to create a fail-safe seal design at locations wherever labyrinth seals are currently used, including interstage shaft seals, rotor end seals, bucket (or blade) tip seals and spill strips. Brush seals, per se, when used in place of labyrinth seals, can result in considerable span reductions of steam turbines, or machines with more turbine stages for a given span. Application to end packings results in the potential elimination of gland sealing/exhauster systems. Brush seal life can be improved by retrofitting brush segments to labyrinth seal segments that are either spring-backed, or use pressure loads to obtain design clearances only after steady state operating conditions are achieved. The brush seals are provided with backing plates shaped like labyrinth teeth, resulting in a fail-safe design. Also, the use of existing labyrinth teeth as bristle backing plates results in a brush seal with diminished susceptibility to hysteresis when compared to conventional brush seal designs. Low friction coatings can also be used to reduce brush seal hysteresis. Incorporation of brush seals in labyrinth seal rings that are either spring-backed or held in place by pressure forces results in extremely low brush seal wear.
摘要翻译：电刷密封件改装成现有的涡轮迷宫式密封环，以在目前使用迷宫式密封件的位置创建故障安全密封设计，包括级间轴密封件，转子端部密封件，铲斗（或刀片）末端密封件和溢出条。刷子密封件本身在用于代替迷宫式密封件时，可以导致蒸汽轮机或具有更多涡轮级的机器在给定跨度上的相当大的跨度减少。对端部密封的应用导致密封/排气系统的潜在消除。刷子密封寿命可以通过将刷段改装为弹簧密封段，或者使用压力负载仅在达到稳态工作条件之后才能获得设计间隙。刷子密封件设置有类似迷宫齿的背板，从而形成故障安全设计。此外，与传统的刷密封设计相比，使用现有的迷宫齿作为刷毛背板导致刷密封，对滞后的敏感性降低。低摩擦涂层也可用于减少刷子密封滞后。将刷子密封件装入迷宫式密封环中，弹簧支撑或通过压力力保持在适当位置导致极低的刷密封磨损。

5. 发明授权

US5350277A Closed-circuit steam-cooled bucket with integrally cooled shroud for gas turbines and methods of steam-cooling the buckets and shrouds 失效
标题翻译：用于燃气轮机的具有整体冷却罩的闭路蒸汽冷却斗和蒸汽冷却桶和护罩的方法
公开(公告)号：US5350277A
公开(公告)日：1994-09-27
申请号：US979247
申请日：1992-11-20
申请人： Ariel C. P. Jacala , R. Paul Chiu
发明人： Ariel C. P. Jacala , R. Paul Chiu
IPC分类号： F01D5/18
CPC分类号： F01D5/225 , F01D5/185 , F01D5/187 , F05D2240/81 , F05D2260/2322 , Y02T50/673 , Y02T50/676
摘要： The bucket 10 of a gas turbine includes first and second steam supply passageways 32 and 34 for directing cooling steam radially outwardly along the bucket. Steam return passageways 40, 42 and 44 lie adjacent the trailing edge for returning cooling steam to its source. A shroud is disposed at the bucket tip and has cross-over passages communicating the supply steam from the first and second passageways to the fifth, third and fourth passageways, respectively.
摘要翻译：燃气轮机的铲斗10包括用于沿着铲斗沿径向向外引导冷却蒸汽的第一和第二蒸汽供应通道32和34。蒸汽回流通道40,42和44位于后缘附近，用于将冷却蒸汽返回到其源。护罩设置在铲斗前端，并具有将供应蒸汽从第一和第二通道分别连接到第五，第三和第四通道的交叉通道。

6. 发明授权

US5125798A Method and apparatus for cooling air flow at gas turbine bucket trailing edge tip 失效
标题翻译：用于在气体涡轮机底座上冷却气流的方法和装置
公开(公告)号：US5125798A
公开(公告)日：1992-06-30
申请号：US521891
申请日：1990-04-13
申请人： Myron C. Muth , R. Paul Chiu
发明人： Myron C. Muth , R. Paul Chiu
IPC分类号： F01D5/18
CPC分类号： F01D5/187 , Y02T50/676
摘要： An apparatus and method for varying the cooling air flow within a gas turbine bucket tip. Each turbomachinery blade contains at least one radial cooling passage located between a hollow interior and an outside of the blade. A transversely-oriented elongate channel connects at least one of the cooling passages with the trailing edge of the blade. Secured within the transversely-oriented channel is a pin which extends into at least one of the radial cooling passages to partially obstruct the cooling fluid flow depending on the needs of the design.

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