公开(公告)号：US20170016342A1

公开(公告)日：2017-01-19

申请号：US15278350

申请日：2016-09-28

申请人： Mitsubishi Hitachi Power Systems, Ltd.

发明人： Takanori SHIBATA ,  Noriyo NISHIJIMA ,  Kiyoshi SEGAWA ,  Hisataka FUKUSHIMA ,  Goingwon LEE

IPC分类号： F01D11/08 ,  F01D9/04

CPC分类号： F01D11/08 ,  F01D5/225 ,  F01D9/041 ,  F05D2220/31 ,  F05D2240/11 ,  F05D2240/12 ,  F05D2240/30

摘要： An axial flow turbine that can enhance an effect of reducing a mixing loss is disclosed. The axial flow turbine includes a plurality of stator blades provided on the inner circumferential side of a diaphragm outer ring; a plurality of rotor blades provided on the outer circumferential side of a rotor; a shroud provided on the outer circumferential side of the plurality of rotor blades; an annular groove portion formed in the diaphragm outer ring and housing the shroud therein; a clearance passage defined between the groove portion and the shroud, into which a portion of working fluid flows from the downstream side of the stator blades in a main passage; seal fins provided in the clearance passage; a circulation flow generating chamber defined on the downstream side of the clearance passage; and a plurality of shielding plates secured to the diaphragm outer ring.

摘要翻译： 公开了一种可以增强减少混合损失的效果的轴流涡轮机。 轴流涡轮机包括设置在隔膜外圈的内周侧的多个定子叶片; 设置在转子的外周侧的多个转子叶片; 设置在所述多个转子叶片的外周侧的护罩; 形成在所述隔膜外圈中并将所述护罩容纳在其中的环形槽部; 间隙通道，限定在所述槽部和所述护罩之间，一部分工作流体从所述定子叶片的下游侧在主通道中流动; 设置在间隙通道中的密封翅片; 限定在所述间隙通道的下游侧的循环流产生室; 以及固定到隔膜外圈的多个屏蔽板。

公开(公告)号：US20150132114A1

公开(公告)日：2015-05-14

申请号：US14535362

申请日：2014-11-07

申请人： MITSUBISHI HITACHI POWER SYSTEMS, LTD.

发明人： Hisataka FUKUSHIMA ,  Takanori SHIBATA ,  Kiyoshi SEGAWA ,  Goingwon LEE

IPC分类号： F01D11/08

CPC分类号： F01D11/08 ,  F01D5/145 ,  F01D5/225 ,  F01D17/162 ,  F05D2220/31 ,  F05D2250/411

摘要： An axial turbine includes a plurality of ribs provided in such a way as to be sandwiched between the diaphragm outer ring and the axial seal fin in the gap between the shroud and the diaphragm outer ring, the ribs being extended from the diaphragm outer ring toward the shroud in the radial direction of the rotor and in the direction of the rotation axis thereof, and a guide plate provided in such a way as to be present along the axial seal fin and a face of the diaphragm outer ring, opposed to the rotor, so as to be extended in the rotation radial direction of the rotor.

摘要翻译： 轴向涡轮机包括多个肋，所述多个肋设置成在护罩和隔膜外圈之间的间隙中夹在隔膜外圈和轴向密封翅片之间，肋从隔膜外圈向着 在转子的径向和沿其旋转轴线的方向上安装有沿轴向密封翅片设置的引导板和与转子相对的隔膜外圈的表面， 以便在转子的旋转径向方向上延伸。

公开(公告)号：US20150125266A1

公开(公告)日：2015-05-07

申请号：US14532424

申请日：2014-11-04

申请人： Mitsubishi Hitachi Power Systems, Ltd.

发明人： Yusuke TAKAHASHI ,  Goingwon LEE ,  Koji OGATA ,  Nozomu OGASAWARA

IPC分类号： F01K7/16 ,  F01D1/20 ,  F01D17/10

CPC分类号： F01K7/165 ,  F01D1/023 ,  F01D17/105 ,  F01D17/145 ,  F02C9/18 ,  F05D2260/606

摘要： Steam turbine equipment is provided that can sharply adjust power generation output based on a variation in power demand while improving power generation efficiency during operation at a rated power generation output.The steam turbine equipment includes a steam control valve 4 disposed in a main steam pipe 2 leading from a boiler 1 to a steam turbine, an overload valve 6 disposed in an overload steam pipe 5 that bypasses the steam control valve 4 and leads from the main steam pipe 2 to a lower-pressure side of a steam turbine than a point where the main steam pipe 2 connects to the steam turbine, and a slit portion 31 through which the steam having flowed through the overload steam pipe 5 passes before flowing into a steam turbine stage portion. The slit portion 31 is configured such that its width C in an axial direction of a turbine rotor 15 is smaller than an inside diameter d of the overload steam pipe 5 (d>C).

摘要翻译： 提供了一种蒸汽轮机设备，其可以在额定功率产生输出时在提高发电效率的同时，根据功率需求的变化急剧调整发电输出。 蒸汽轮机设备包括设置在从锅炉1引导到蒸汽轮机的主蒸汽管2中的蒸汽控制阀4，设置在过载蒸汽管5中的过载阀6，其绕过蒸汽控制阀4并从主管 蒸汽管2相对于主蒸汽管2与蒸汽轮机连接的点的蒸汽涡轮机的低压侧，以及在流过过热蒸汽管5之前流过过载蒸汽管5的蒸汽通过的狭缝部31 汽轮机台部。 狭缝部31构成为，其涡轮转子15的轴向宽度C比过载蒸汽管5的内径d小（d> C）。

公开(公告)号：US20150125260A1

公开(公告)日：2015-05-07

申请号：US14533537

申请日：2014-11-05

申请人： Mitsubishi Hitachi Power Systems, Ltd.

发明人： Genki KASHIMA ,  Toyohiko MASUDA ,  Tetsuya HINUMA ,  Isao SAGAWA ,  Yoshitaka NARIMATSU ,  Hotaka KOBAYASHI ,  Goingwon LEE ,  Kenji SASAKI

IPC分类号： F01D25/12

CPC分类号： F01D25/12 ,  F01D21/00 ,  F01D25/24 ,  F01K5/02 ,  F02C7/12 ,  F05D2220/31 ,  F05D2260/232

摘要： The invention offers a steam turbine forced air cooling system, its method, and a steam turbine provided with the system, the system being of an inexpensive and simple device configuration and improving a cooling effect by the use of an easy-to-get device.Suction is applied to the steam introduction side of an HP turbine 4 or an IP turbine 9 by the use of cooling air suction ejectors 27, 28 which use a compressed medium other than steam as a drive source. The cooling air is then introduced from the steam exhaust portion of the steam turbine into the inside of the steam turbine and is discharged from the ejectors 27, 28 to the atmosphere.

摘要翻译： 本发明提供了一种蒸汽轮机强制空气冷却系统及其方法，以及配备有该系统的蒸汽轮机，该系统是廉价且简单的装置结构，并且通过使用易于使用的装置来改善冷却效果。 通过使用使用蒸汽以外的压缩介质作为驱动源的冷却空气吸入喷射器27,28，对HP涡轮4或IP涡轮9的蒸汽引入侧进行吸引。 然后将冷却空气从蒸汽轮机的蒸汽排出部分引入蒸汽涡轮机的内部，并从喷射器27,28排放到大气中。