公开(公告)号：US20110236189A1

公开(公告)日：2011-09-29

申请号：US13027291

申请日：2011-02-15

申请人： Hideki ONO ,  Takeshi KUDO ,  Kenichi MURATA ,  Masataka SONOBE ,  Tsutomu SUGIYAMA

发明人： Hideki ONO ,  Takeshi KUDO ,  Kenichi MURATA ,  Masataka SONOBE ,  Tsutomu SUGIYAMA

IPC分类号： F01D11/02

CPC分类号： F01D11/02 ,  F01D5/225

摘要： Whirl flow of leakage flow is reduced to reduce the occurrence potential of steam whirl.A rotor oscillation preventing structure for a steam turbine includes: a stator vane 3; a moving blade 1; a shroud cover 2 installed on an outer circumferential side distal end of the moving blade 1; and a plurality of seal fins 6 installed, at any interval in the axial direction of a rotor, on an wall surface of a stationary body located on an outer circumferential side of the shroud cover 2, a whirl preventing structure comprised of whirl preventing plates 9 or whirl preventing grooves 11 is provided at a shroud cover inlet return portion 10 of the shroud cover 2 so as to block the whirl flow of leakage flow 8 on an upstream side in an operating steam flow direction of the seal fins to reduce an absolute velocity component of the leakage flow 8 in a rotational direction of the rotor.

摘要翻译： 泄漏流量的旋转流量减少，以减少蒸汽旋转的发生潜力。 一种用于汽轮机的转子摆动防止结构，包括：定子叶片3; 动叶片1; 安装在动叶片1的外周侧前端的护罩罩2; 以及在转子的轴向上任意间隔地安装在位于护罩罩2的外周侧上的静止体的壁面上的多个密封翅片6，由防旋转板9构成的防旋转结构 或防水槽11设置在护罩盖2的护罩盖入口返回部10处，以阻止密封翅片的工作蒸汽流动方向上游侧的泄漏流8的旋转流动，从而降低绝对速度 在转子的旋转方向上的泄漏流8的分量。

公开(公告)号：US20120014778A1

公开(公告)日：2012-01-19

申请号：US13181970

申请日：2011-07-13

申请人： Kenjiro NARITA ,  Haruyuki YAMAZAKI ,  Takeshi KUDO ,  Kenichi MURATA

发明人： Kenjiro NARITA ,  Haruyuki YAMAZAKI ,  Takeshi KUDO ,  Kenichi MURATA

IPC分类号： F01D11/02

CPC分类号： F01D11/22 ,  F01D11/06 ,  F05D2220/31 ,  F16J15/442 ,  F16J15/445

摘要： Subject: To provide a sealing structure, and control method therefor, which improve sealing performance between a rotating region and a fixed region, prevent fins from being damaged, and prevent increases in the amount of steam leakage from any clearances newly formed by further abrasion of an abradable material.Solution: The sealing structure in which free-cutting spacers 28 on a sealing base plate 25 and sealing fins 24 on a rotor 18 are opposed to each other is provided, in the sealing structure of which the sealing base plate 25 is disposed so as to be movable in an axial direction of the rotor 18. When a steam turbine 3 increases in load, a pressure head 30 moves in an axial steam-pressure loading direction of the rotor 18 and the sealing base plate 25 connected to the pressure head 30 moves in the axial steam-pressure loading direction. Since the free-cutting spacers 28 at positions opposed to those of the sealing fins 24 existing after the movement of the sealing base plate are maintained in a non-contact state, clearances between the sealing fins 24 and the free-cutting spacers 28 are dimensionally minimized.

摘要翻译： 主题：为了提供一种改善旋转区域和固定区域之间的密封性能的密封结构及其控制方法，防止翅片被损坏，并且防止由于进一步磨损而新形成的任何间隙的蒸汽泄漏量增加 耐磨材料。 解决方案：在密封基板25的密封结构中，设置密封基板25上的自由切割间隔件28和转子18上的密封翅片24彼此相对的密封结构， 可以在转子18的轴向方向上移动。当蒸汽轮机3的负载增加时，压头30在转子18的轴向蒸汽加载方向上移动，连接到压头30的密封基板25移动 在轴向蒸汽压力加载方向。 由于与在密封基板的移动之后存在的密封翅片24相对的位置处的自由切割间隔件28保持在非接触状态，所以密封翅片24和自由切割间隔件28之间的间隙是尺寸的 最小化。

公开(公告)号：US20120121411A1

公开(公告)日：2012-05-17

申请号：US13292131

申请日：2011-11-09

申请人： Akira ENDO ,  Kazuyuki YAMAGUCHI ,  Yohei MAGARA ,  Toyomi YOSHIDA ,  Michiyuki TAKAGI ,  Kenichi MURATA ,  Takeshi KUDO

发明人： Akira ENDO ,  Kazuyuki YAMAGUCHI ,  Yohei MAGARA ,  Toyomi YOSHIDA ,  Michiyuki TAKAGI ,  Kenichi MURATA ,  Takeshi KUDO

IPC分类号： F01D11/00 ,  F16J15/447

CPC分类号： F01D11/02 ,  F05D2260/96

摘要： A labyrinth seal is provided that can suppress the occurrence of an unequal pressure pattern in the seal, suppress unstable vibration of a rotating shaft and ensure sealing performance.The labyrinth seal includes a seal ring 13 and a plurality of seal fins 11. Ring-like cavities 12 are defined on the outer circumference of the rotating shaft 2 with the seal ring 13 and the seal fins 11. The ring-like cavities 12 suppress a leakage flow LS moving along the outer circumference of the rotating shaft 2. Void portions 14 are each provided on the outer circumferential side of the cavity 12 in the seal ring 13 so as to extend in the circumferential direction of the rotating shaft 2 and communicate with the cavity 12 at circumferential intervals to temporarily relieve a leakage flow from inside the cavity in the circumferential direction.

摘要翻译： 提供了一种迷宫式密封件，可以抑制密封件中不均匀的压力图案的发生，抑制旋转轴的不稳定的振动并确保密封性能。 迷宫式密封件包括密封环13和多个密封翅片11.环形空腔12由密封环13和密封翅片11限定在旋转轴2的外圆周上。环状空腔12抑制 泄漏流LS沿着旋转轴2的外周移动。空隙部分14分别设置在密封环13中的空腔12的外周侧上，以沿着旋转轴2的圆周方向延伸并且连通 空腔12以周向间隔暂时缓解在圆周方向上的空腔内的泄漏流。

公开(公告)号：US20100232966A1

公开(公告)日：2010-09-16

申请号：US12706866

申请日：2010-02-17

申请人： Hideki ONO ,  Shunsuke MIZUMI ,  Kenichi MURATA

发明人： Hideki ONO ,  Shunsuke MIZUMI ,  Kenichi MURATA

IPC分类号： F01D5/22

CPC分类号： F01D5/225 ,  F01D5/143 ,  F05D2220/31 ,  F05D2250/232

摘要： In a steam turbine including a turbine rotor 7; a moving blade 1 secured to the turbine rotor 7; a shroud 3 provided on an outer circumferential side distal end of the moving blade 1; and an outer circumferential side stationary wall 4 internally embracing the turbine rotor 7 and forming an outer circumferential side passage wall of a steam path, the shroud 3 has an inner circumferential surface 14 so formed that a moving blade outlet flare angle α3 is greater than a moving blade inlet flare angle α2; an angle α1 formed between the outer circumferential side stationary wall 4 and the turbine central axis 50 is generally equal to the moving blade inlet flare angle α2; and an angle α4 formed between the outer circumferential side stationary wall and an turbine central axis 50 is generally equal to the moving blade outlet flare angle α3.

摘要翻译： 在包括涡轮转子7的汽轮机中; 固定在涡轮转子7上的动叶片1; 设置在动叶片1的外周侧前端的护罩3; 外周侧固定壁4内部包围涡轮转子7并形成蒸汽通道的外周侧通道壁，罩3具有如此形成的内周面14，使得动叶片出口喇叭口角度α3大于 移动叶片入口喇叭角α2; 形成在外周侧静止壁4与涡轮机中心轴线50之间的角度α1通常与动叶片入口张开角α2相等; 形成在外周侧静止壁和涡轮机中心轴线50之间的角度α4大体上等于动叶片出口喇叭口角度α3。

公开(公告)号：US20120301309A1

公开(公告)日：2012-11-29

申请号：US13477289

申请日：2012-05-22

申请人： Eiji NISHIOKA ,  Jun SATO ,  Shinya IMANO ,  Takeshi KUDO ,  Kenichi MURATA ,  Kazutaka HOSOKAWA ,  Kazuhiko ENDO

发明人： Eiji NISHIOKA ,  Jun SATO ,  Shinya IMANO ,  Takeshi KUDO ,  Kenichi MURATA ,  Kazutaka HOSOKAWA ,  Kazuhiko ENDO

IPC分类号： F04D29/38 ,  B23K1/19 ,  B23K28/00 ,  B23K101/00

CPC分类号： B23K9/0282 ,  B23K9/0026 ,  B23K9/046 ,  B23K9/173 ,  B23K9/232 ,  B23K9/235 ,  B23K2101/001 ,  B23K2101/06 ,  B23K2103/18 ,  B23K2103/26 ,  F01D5/063 ,  F05D2230/232 ,  F05D2300/50212 ,  Y10T29/4932 ,  Y10T403/479

摘要： Dissimilar metal welds including a buttering portion with a small variation in strength distribution in a plate thickness direction are formed by welding two parent materials having at least one of different compositions and different refining conditions through a buttering for alleviating mismatch between one of the different compositions and the different refining conditions of the two members and through a welded metal for joining one of the parent materials and the buttering. The buttering is formed of welding metals laminated in a plate thickness direction, and a dilution ratio of the buttering with the parent materials is 50% or less. The manufacturing method includes performing butt welding on a dummy material formed by increasing a groove depth by providing a member on a bottom side of a welding groove and on parent materials by using the buttering; and processing a groove within a welding metal formed of the buttering.

摘要翻译： 通过焊接具有不同组成和不同精炼条件中的至少一种的两种母体材料，通过用于减轻不同组合物之一和不同组分之间的错配的糊状物来形成包括在板厚度方向上具有小的强度分布变化的涂抹部分的异种金属焊缝 两个构件的不同的精炼条件以及通过焊接金属接合母材和母料之一。 黄油由板材厚度方向层叠的焊接金属形成，母料与母材的稀释比例为50％以下。 该制造方法包括通过在焊接槽的底侧设置构件并通过使用所述母料来对通过增加沟槽深度而形成的虚拟材料进行对接焊接; 以及在由所述黄油形成的焊接金属内加工凹槽。