公开(公告)号：US20200325784A1

公开(公告)日：2020-10-15

申请号：US16833783

申请日：2020-03-30

申请人： Mitsubishi Hitachi Power Systems, Ltd.

发明人： Shinji OIKAWA ,  Takeshi IZUMI ,  Jun SATO ,  Kiyoshi SEGAWA ,  Yuta YANASE

IPC分类号： F01D5/30 ,  F01D5/14

摘要： According to the present invention, the steam turbine rotor includes an embedded fin which includes: a bent bottom part; and an upright part including a fin tip and a fin root, and which is inserted in a fixing groove and fixed in the fixing groove by means of a locking strip, and has an arrangement wherein a static friction coefficient between a side surface of the fixing groove and a side surface of the fin root, a static friction coefficient between a side surface of the locking strip and a side surface of the fin root, and a static friction coefficient between the side surface of the fixing groove and the side surface of the locking strip are increased.

公开(公告)号：US20180080329A1

公开(公告)日：2018-03-22

申请号：US15562912

申请日：2016-04-11

申请人： MITSUBISHI HITACHI POWER SYSTEMS, LTD.

发明人： Shinji OIKAWA ,  Masahiko ARAI ,  Hiroyuki DOI ,  Hideo YODA

IPC分类号： F01D5/28 ,  F01D5/14 ,  C22C14/00 ,  C22F1/18 ,  B23K35/32 ,  B23K15/00 ,  B23K26/21 ,  B23K26/342 ,  B23K31/02 ,  B23K10/02

CPC分类号： F01D5/286 ,  B23K10/02 ,  B23K10/027 ,  B23K15/00 ,  B23K15/0093 ,  B23K26/21 ,  B23K26/342 ,  B23K31/00 ,  B23K31/02 ,  B23K35/325 ,  B23K35/327 ,  B23K2101/001 ,  B23K2103/14 ,  C22C1/02 ,  C22C14/00 ,  C22F1/00 ,  C22F1/02 ,  C22F1/18 ,  C22F1/183 ,  F01D5/147 ,  F01D5/28 ,  F01D25/00 ,  F05D2220/31 ,  F05D2230/31 ,  F05D2240/307 ,  F05D2300/174 ,  F05D2300/2262

摘要： A steam turbine rotor blade achieving both abrasion resistance and reliability, and a method for manufacturing a steam turbine rotor blade capable of obtaining such a steam turbine rotor blade are provided. A steam turbine rotor blade according to the invention is characterized by including a blade base material and an erosion shield formed on a surface of the blade base material, wherein the blade base material is composed of a titanium alloy, and the erosion shield is composed of a weld overlay layer including a parent phase composed of pure titanium in which a metal element is solid-dissolved or a titanium alloy in which a metal element is solid-dissolved, and a hard phase dispersed in the parent phase.

公开(公告)号：US20150132144A1

公开(公告)日：2015-05-14

申请号：US14535353

申请日：2014-11-07

申请人： MITSUBISHI HITACHI POWER SYSTEMS, LTD.

发明人： Shinji OIKAWA ,  Shinya IMANO ,  Hiroyuki DOI

IPC分类号： C21D6/02 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  F01D5/28 ,  C22C38/44 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D6/00 ,  C22C38/46

CPC分类号： C21D6/02 ,  C21D6/004 ,  C21D6/005 ,  C21D6/007 ,  C21D6/008 ,  C21D7/13 ,  C21D9/0068 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  F01D5/28 ,  F05D2220/31 ,  F05D2300/171

摘要： It is an objective of the invention to provide a precipitation-hardening martensitic stainless steel having a far better balance between a high mechanical strength and a high toughness than conventional ones as well as having good corrosion resistance properties. There is provided a precipitation-hardening martensitic stainless steel throughout which precipitates of intermetallic compounds are dispersed, the martensitic stainless steel including: 0.1 mass % or less of C; 11 to 13 mass % of Cr; 7.5 to 11 mass % of Ni; 0.9 to 1.7 mass % of Al; 0.85 to 1.35 mass % of Mo; 1.75 to 2.75 mass % of W; and the balance including Fe and inevitable impurities, in which “[Mo content]+0.5×[W content]” is from 1.9 mass % to 2.5 mass %, and “[Mo content]/[W content]” is from 0.4 to 0.6.

摘要翻译： 本发明的目的是提供一种沉积硬化马氏体不锈钢，其在高机械强度和高韧性之间具有比常规的更好的平衡以及具有良好的耐腐蚀性能。 提供了一种沉淀硬化马氏体不锈钢，其中分散有金属间化合物的析出物，马氏体不锈钢包括：0.1质量％以下的C; 11〜13质量％的Cr; 7.5〜11质量％的Ni; 0.9〜1.7质量％的Al; 0.85〜1.35质量％的Mo; 1.75〜2.75质量％的W; 余量包括Fe和不可避免的杂质，其中“[Mo含量] + 0.5×[W含量]”为1.9质量％至2.5质量％，“[Mo含量] / [W含量]”为0.4〜 0.6。

公开(公告)号：US20160177742A1

公开(公告)日：2016-06-23

申请号：US14971462

申请日：2015-12-16

申请人： Mitsubishi Hitachi Power Systems, Ltd.

发明人： Shinji OIKAWA ,  Shinya IMANO ,  Hiroyuki DOI ,  Akira YOSHINARI

IPC分类号： F01D5/28 ,  F01D25/00 ,  F01D5/02

CPC分类号： F01D5/28 ,  C22C14/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52 ,  C22C38/54 ,  F01D5/02 ,  F01D5/06 ,  F01D25/005 ,  F05D2220/31 ,  F05D2220/72 ,  F05D2240/60 ,  F05D2300/11 ,  F05D2300/121 ,  F05D2300/13 ,  F05D2300/131 ,  F05D2300/132 ,  F05D2300/171 ,  F05D2300/174

摘要： It is an objective of the invention to provide a steam turbine rotor of which a rotor shaft is made of a low-cost heat resistant ferritic steel and that can withstand high main steam temperatures of about 650° C. There is provided a steam turbine rotor comprising: a rotor shaft made of a heat resistant ferritic steel such as a 12-Cr steel; and a rotor blade made of a Ti—Al alloy, wherein the Ti—Al alloy includes: from 38 to 45 atomic % of Al; from 0.5 to 2 atomic % of V; from 2 to 6 atomic % of Cr and/or Mo; and the balance being Ti and incidental impurities.

摘要翻译： 本发明的目的是提供一种蒸汽轮机转子，其中转子轴由低成本的耐热铁素体钢制成，并且能够承受约650℃的高主蒸汽温度。提供了一种汽轮机转子 包括：由诸如12-Cr钢的耐热铁素体钢制成的转子轴; 以及由Ti-Al合金制成的转子叶片，其中所述Ti-Al合金包括：38至45原子％的Al; 0.5至2原子％的V; 2〜6原子％的Cr和/或Mo; 余量为Ti和杂质。

公开(公告)号：US20180058232A1

公开(公告)日：2018-03-01

申请号：US15630036

申请日：2017-06-22

申请人： Mitsubishi Hitachi Power Systems, Ltd.

发明人： Shinji OIKAWA

IPC分类号： F01D11/00 ,  F01D5/02 ,  F01D9/04 ,  F01D25/24

CPC分类号： F01D11/001 ,  F01D5/02 ,  F01D9/04 ,  F01D11/00 ,  F01D11/006 ,  F01D11/122 ,  F01D11/18 ,  F01D25/24 ,  F05D2220/30 ,  F05D2240/55

摘要： A segment 31 for a sealing device according to the present invention is used in a sealing device 28 provided between a turbine rotor 12 and a stationary body 14 that covers the turbine rotor 12. The segment 31 for the sealing device is characterized by including a base 32 that engages with the turbine rotor 12 and a free-cutting layer 34 that covers a stationary body opposed surface 37, which is a surface of the base 32 opposed to the stationary body 14.

公开(公告)号：US20160169023A1

公开(公告)日：2016-06-16

申请号：US14965001

申请日：2015-12-10

申请人： Mitsubishi Hitachi Power Systems, Ltd.

发明人： Shunsuke MIZUMI ,  Takeshi KUDO ,  Koji OGATA ,  Shinji OIKAWA

IPC分类号： F01D11/02 ,  F16J15/447

CPC分类号： F01D11/02 ,  F05D2220/32 ,  F05D2240/55 ,  F16J15/442 ,  F16J15/447

摘要： It is an object of the present invention to provide a sealing mechanism that, while preventing a clearance that passes in an axial direction through an entire abutting surface without involving large resistance and that invites blow-by of a working fluid, can prevent adjacent seal segments from sticking to each other, and a method for manufacturing the sealing mechanism. A sealing device includes: an annular sealing ring that includes a plurality of seal segments annularly juxtaposed; a plurality of seal fins provided in an axial direction on an inner peripheral surface of the sealing ring; a joint surface on a circumferential end of the seal segment, the joint surface facing a joint surface on an adjacent seal segment; a groove that extends in a radial direction in the joint surface; and a protrusion formed by bending part of a surface that constitutes a long side of the groove toward an outside of the joint surface.

摘要翻译： 本发明的目的是提供一种密封机构，其能够防止沿着轴向通过整个抵接面而没有大的阻力而引起工作流体窜漏的间隙，能够防止相邻的密封部 彼此粘合，以及密封机构的制造方法。 密封装置包括：环形密封环，其包括环形并置的多个密封段; 在所述密封环的内周面上沿轴向设置的多个密封翅片; 所述密封段的周向端部上的接合表面，所述接合表面面向相邻密封段上的接合表面; 在所述接合面中沿径向延伸的槽; 以及通过将构成槽的长边的表面的一部分朝向接头表面的外侧弯曲而形成的突起。