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1. 发明公开

EP3249172A4 SEAL DEVICE FOR TURBINE, TURBINE, AND THIN PLATE FOR SEAL DEVICE 审中-公开
公开(公告)号：EP3249172A4
公开(公告)日：2018-03-21
申请号：EP16752352
申请日：2016-02-09
申请人： MITSUBISHI HITACHI POWER SYS
发明人： YOSHIDA AZUMI , UEHARA HIDEKAZU , OYAMA HIROHARU , OZAKI KOHEI , HAMADA KATSUHISA , SUGISHITA HIDEAKI , NISHIKAWA TOYOHARU , KUWAMURA YOSHIHIRO , HATANO KOHEI , MATSUYAMA KEISUKE
IPC分类号： F01D11/12 , F16J15/22 , F16J15/44
CPC分类号： F01D11/02 , F01D11/12 , F02C7/28 , F05D2240/55 , F16J15/20 , F16J15/22 , F16J15/44 , F16J15/444
摘要： A seal device for a turbine disposed around a rotor so as to separate a high-pressure space and a low-pressure space includes: a plurality of thin plates arranged along an outer peripheral surface of the rotor, each of the thin plates including a root portion which is disposed on an outer side in a radial direction of the rotor and which is supported on a stationary part of the turbine and a tip portion which is disposed on an inner side in the radial direction of the rotor and which has a tip surface facing the outer peripheral surface of the rotor, Each of the thin plates is configured such that a width direction of the thin plate is parallel to an axial direction of the rotor at a side of the root portion, and the tip portion of each of the thin plates is configured such that an end on a side of the high-pressure space is positioned downstream of another end on a side of the low-pressure side, in a rotational direction of the rotor, in a cross-section taken along the width direction of the thin plate.

2. 发明公开

EP2617942A4 TURBINE 审中-公开
公开(公告)号：EP2617942A4
公开(公告)日：2018-02-28
申请号：EP11825071
申请日：2011-09-08
申请人： MITSUBISHI HITACHI POWER SYS
发明人： KUWAMURA YOSHIHIRO , MATSUMOTO KAZUYUKI , OYAMA HIROHARU , TANAKA YOSHINORI , MATSUURA MASAAKI , MATSUO ASAHARU
IPC分类号： F01D5/14 , F01D5/20 , F01D5/22 , F01D9/02 , F01D11/00 , F01D11/02 , F01D11/08 , F16J15/447
CPC分类号： F01D9/00 , F01D5/225 , F01D11/001 , F01D11/02 , F01D11/08 , F05D2220/31 , F16J15/4472
摘要： The turbine (1) according to the present invention includes: a blade body (50) having a blade (59) provided at one of a rotor rotatably supported and a stator provided around the rotor and extending in a radial direction toward the other side from one side and a shroud (51) extending in a circumferential direction at a tip portion in the radial direction of the blade (59); and an accommodating concave body (11) provided at the other of the rotor and the stator, extending in the circumferential direction, accommodating the shroud (51) with a gap (G) interposed therebetween, and relatively rotating with respect to the blade body (50), wherein leakage flow (L) leaked from main flow (M) flowing along the blade (59) flows into the gap (G); and wherein the shroud is provided with a guide curved surface formed between a peripheral surface (53C) facing the accommodating concave body (11) and a trailing edge end portion (56) formed closer to the main flow (M) side in a downstream of the leakage flow (L) than the peripheral surface (53C) in a downstream of the leakage flow (L), wherein a guide curved surface (57) is configured to guide the leakage flow (L) along the peripheral surface (53C) from the peripheral surface (53C) to the trailing edge end portion (56).

3. 发明公开

EP3078888A4 SEAL STRUCTURE AND ROTARY MACHINE 有权转让
标题翻译： DICHTUNGSSTRUKTUR UND DREHMASCHINE
公开(公告)号：EP3078888A4
公开(公告)日：2017-08-30
申请号：EP14867257
申请日：2014-11-26
申请人： MITSUBISHI HITACHI POWER SYS
发明人： KUWAMURA YOSHIHIRO , MATSUMOTO KAZUYUKI , OYAMA HIROHARU , TANAKA YOSHINORI , NISHIKAWA TOYOHARU , UEHARA HIDEKAZU , NISHIMOTO SHIN
IPC分类号： F01D5/22 , F01D11/02 , F01D11/08 , F16J15/447
CPC分类号： F01D11/02 , F01D5/12 , F01D5/225 , F01D11/08 , F05D2220/31 , F05D2220/32 , F16J15/4472
摘要： In a seal structure (2) that seals a gap (Gd) between a first structure (10) and a second structure (51) which faces the first structure (10) in a radial direction and rotates relative to the first structure (10) about an axis, one of the first structure (10) and the second structure (51) has a base surface (4) and a step surface (5) that protrudes toward the other side from the base surface (4), and the other is provided with: a first fin (18) which extends toward the step surface (5) and forms a first gap (mB) at a space with respect to the step surface (5); a second fin (19) that, on the downstream side of the first fin (18), extends toward the base surface (4) and forms a second gap (mC) at the space with respect to the base surface (4); and a protrusion part (7) that is disposed between the first fin (18) and the second fin (19) and that divides a leak flow (SL2) which has passed through the first gap (mB), into a first vortex (B3) along the first fin (18) and a second vortex (B4) along the second fin (19).
摘要翻译：在密封在第一结构（10）和第二结构（51）之间沿径向方向面对第一结构（10）并且相对于第一结构（10）旋转的间隙（Gd）的密封结构（2）关于轴线，第一结构（10）和第二结构（51）中的一个具有基面（4）和从基面（4）朝向另一侧突出的台阶面（5），并且另一个设置有：第一翅片（18），其朝向所述台阶面（5）延伸并且在相对于所述台阶面（5）的空间中形成第一间隙（mB）;第二翅片在所述第一翅片（18）的下游侧，朝向所述底面（4）延伸并且在所述空间中相对于所述底面（4）形成第二间隙（mC）的第二翅片（19）。（18）和第二翅片（19）之间并且将穿过第一间隙（mB）的泄漏流（SL2）分成第一涡流（B3）的突出部分（7））沿着第一翅片（18）以及沿着第二翅片（19）的第二漩涡（B4）。

4. 发明公开

EP2623722A4 TURBINE 有权转让
公开(公告)号：EP2623722A4
公开(公告)日：2017-12-13
申请号：EP11828814
申请日：2011-09-15
申请人： MITSUBISHI HITACHI POWER SYS
发明人： MATSUMOTO KAZUYUKI , KUWAMURA YOSHIHIRO , OYAMA HIROHARU , TANAKA YOSHINORI , MACHIDA YUKINORI , MATSUO ASAHARU
IPC分类号： F01D11/08 , F01D5/20
CPC分类号： F01D5/12 , F01D5/225 , F01D11/001 , F01D11/08
摘要： A turbine is provided including an annular turbine blade body (50) disposed on a flow path, a diaphragm outer ring (11) installed at a tip side of the blade body via a clearance, and seal fins (12A, 12B, 12C) formed to protrude from the diaphragm outer ring (11) and configured to form small clearances (13A, 13B, 13C) with the annular turbine blade body (50), wherein dead water region-filling sections (15, 17, 19) are formed in cavities (C1, C2, C3) in which main vortexes (SU1, SU2, SU3) are generated, such that a dead water region that the main vortexes (SU1, SU2, SU3) cannot reach is filled.

5. 发明公开

EP2894299A4 ROTARY MACHINE 有权
标题翻译：旋转机械
公开(公告)号：EP2894299A4
公开(公告)日：2016-07-27
申请号：EP13830717
申请日：2013-08-23
申请人： MITSUBISHI HITACHI POWER SYS
发明人： KUWAMURA YOSHIHIRO , ISHIZAKA KOICHI , OKABE YOSHIYUKI , MATSUMOTO KAZUYUKI , OYAMA HIROHARU , UEHARA HIDEKAZU , TANAKA YOSHINORI , NISHIMOTO SHIN
IPC分类号： F01D11/08 , F01D11/10 , F01D25/00 , F16J15/16 , F16J15/22 , F16J15/44 , F16J15/447
CPC分类号： F16J15/3292 , F01D5/225 , F01D11/08 , F01D11/127 , F05D2240/59 , F15D1/10 , F16J15/444 , F16J15/447
摘要： A rotary machine includes turbine moving blades (50); a casing (10) covering the turbine moving blades (50) so as to define a gap at an outer circumference side of the turbine moving blades; a leaf seal (70) having a seal body (71) that is disposed in the gap so as to protrude radially inward from the casing (10) and is capable of coming into contact with the turbine moving blades (50), and a high-pressure-side plate member (73) that is disposed along a face facing a high pressure side of the seal body (71); and a swirling flow inhibitor (80) that is provided on the high pressure side of the leaf seal (70) in the gap and inhibits a swirl flow flowing through the gap in a circumferential direction.

6. 发明公开

EP3249267A4 SEAL DEVICE FOR TURBINE, TURBINE, AND THIN PLATE FOR SEAL DEVICE 有权转让
公开(公告)号：EP3249267A4
公开(公告)日：2018-03-14
申请号：EP15882747
申请日：2015-12-22
申请人： MITSUBISHI HITACHI POWER SYS
发明人： YOSHIDA AZUMI , UEHARA HIDEKAZU , OYAMA HIROHARU , OZAKI KOHEI , HAMADA KATSUHISA , SUGISHITA HIDEAKI , NISHIKAWA TOYOHARU , KUWAMURA YOSHIHIRO , HATANO KOHEI , MATSUYAMA KEISUKE
IPC分类号： F16J15/22 , F01D11/00 , F01D25/00 , F02C7/28 , F16J15/3292 , F16J15/447
CPC分类号： F01D11/12 , F01D11/001 , F05D2220/32 , F05D2240/56 , F05D2240/59 , F05D2250/13 , F05D2250/131 , F05D2250/182 , F05D2250/184 , F05D2250/232 , F05D2260/30 , F16J15/22 , F16J15/3288 , F16J15/3292 , F16J15/447 , F16J15/4472
摘要： A seal device for a turbine is disposed around a rotor so as to separate a high-pressure space and a low-pressure space and includes: a plurality of thin plates arranged along an outer peripheral surface of the rotor, each of the thin plates having a thin-plate tip surface facing the outer peripheral surface of the rotor; a first side plate disposed so as to face the high-pressure space and covering outer peripheral regions of first side surfaces, on a side of the high-pressure space, of the plurality of thin plates; and a second side plate disposed so as to face the low-pressure space and covering outer peripheral regions of second side surfaces, on a side of the low-pressure space, of the plurality of thin plates. The first side surface of each of the thin plates is covered with the first side plate in a region extending further to an inner side, in a radial direction of the rotor, than a region of the second side surface covered with the second side plate. A radial-directional position of the thin-plate tip surface of each of the thin plates has such a distribution that the side of the high-pressure space is farther away from the outer peripheral surface of the rotor than the side of the low-pressure space in at least a partial range of the thin-plate tip surface in an axial direction of the rotor, and the radial-directional position of the thin-plate tip surface at an axial-directional position closest to the high-pressure space is positioned on an inner side of an inner peripheral edge of the first side plate in the radial direction.

7. 发明公开

EP2487332A4 TURBINE 有权转让
公开(公告)号：EP2487332A4
公开(公告)日：2017-12-20
申请号：EP10821956
申请日：2010-10-04
申请人： MITSUBISHI HITACHI POWER SYS
发明人： KUWAMURA YOSHIHIRO , MATSUMOTO KAZUYUKI , OOYAMA HIROHARU , TANAKA YOSHINORI , MATSUO ASAHARU
IPC分类号： F01D11/08 , F01D5/20 , F01D11/02 , F01D25/00 , F02C7/28 , F16J15/447
CPC分类号： F16J15/4472 , F01D5/225 , F01D11/001 , F01D11/02 , F01D11/08
摘要： The turbine is provided with a blade (50) and a structure body (11) which rotates relatively with respect to the blade (50). A stepped part (52A) having a step surface (53A) is installed at one of the leading end of the blade (50) and the structure body (11) corresponding to the leading end thereof, while a seal fin (15A) which extends toward the stepped part (52A) to form a small space (H) is installed at the other of them. A cavity (C1) is formed between the blade (50) and the structure body (11) and also between the seal fin (15A) and the partition wall which faces thereto in the rotating shaft direction of the structure body (11) on the upstream side. When a distance of the cavity (C1) between the partition wall and the seal fin (15A) is given as a cavity width (W), and a distance between the seal fin (15A) and the end edge (55) of the stepped part (52A) in the rotating shaft direction on the upstream side is given as (L), at least one of the distances (L) satisfies the following formula (1). 0.7 �¢ H ‰¤ L ‰¤ 0.3 �¢ W

8. 发明公开

EP2792852A4 TURBINE 审中-公开
公开(公告)号：EP2792852A4
公开(公告)日：2015-07-22
申请号：EP12857899
申请日：2012-12-12
申请人： MITSUBISHI HITACHI POWER SYS
发明人： KUWAMURA YOSHIHIRO , MATSUMOTO KAZUYUKI , OYAMA HIROHARU , TANAKA YOSHINORI , UEHARA HIDEKAZU , MACHIDA YUKINORI
IPC分类号： F01D11/02 , F01D5/20 , F01D11/08 , F02C7/28 , F16J15/40 , F16J15/447
CPC分类号： F01D5/141 , F01D5/225 , F01D11/001 , F01D11/02 , F01D11/08 , F01D11/122 , F05D2220/31
摘要： The turbine related to the invention is a turbine including blades and a structure rotating relative to the blades and having a fluid flowing thereto. The turbine includes step portions that are provided in either radial tip portions of the blades or areas of the structure that face the radial tip portions; sealing fins that extend from the other toward the step portions, and form minute gaps between the sealing fins and the step portions; a flow collision surface that is provided upstream of the sealing fins in a flow direction of the fluid and against which the fluid collides; a protrusion that protrudes toward an upstream side from the flow collision surface; and a facing surface that faces the flow collision surface.

9. 发明公开

EP2894377A4 ROTATING MACHINE 有权
标题翻译： DREHMASCHINE
公开(公告)号：EP2894377A4
公开(公告)日：2015-11-18
申请号：EP13847399
申请日：2013-10-17
申请人： MITSUBISHI HITACHI POWER SYS
发明人： MATSUMOTO KAZUYUKI , KUWAMURA YOSHIHIRO , OYAMA HIROHARU , TANAKA YOSHINORI
IPC分类号： F16J15/447 , F01D11/08 , F01D25/00 , F16J15/22
CPC分类号： F01D11/001 , F01D11/08 , F16J15/4472
摘要： A steam turbine (1A) through which a fluid flows along an axis is equipped with: a tip shroud (51) for turbine blades (50) that are provided on a shaft that extends with the axis as a center; an outer partition plate ring (11) that is provided on a casing so as to face the tip shroud (51) in a radial direction and be capable of rotating relative to the tip shroud (51) around the axis; seal fins (15) that extend radially inward from the outer partition plate ring (11) and that, with the tip shroud (51), form minute gaps (H) therebetween; and steam introduction surfaces (70a) that are formed on downstream sides of the seal fins (15) and are provided so as to face the seal fins (15) within cavities (C) where a main vortex (Y1), generated from a leakage flow passing through a minute gap (H), is generated, and that guide the flow, generated from the main vortex (Y1), toward the minute gaps (H).
摘要翻译：流体沿轴线流过的蒸汽轮机（1A）装有：用于涡轮叶片（50）的尖端罩（51），其设置在以轴线为中心延伸的轴上; 外隔板环（11），其设置在壳体上以在径向方向面对所述尖端罩（51）并且能够相对于所述尖端罩（51）绕所述轴线旋转; 密封翅片（15），其从所述外隔板环（11）径向向内延伸，并且与所述尖端护罩（51）在其间形成微小间隙（H）; 以及形成在密封翅片（15）的下游侧并且设置成面对空腔（C）内的密封翅片（15）的蒸汽引入表面（70a），其中由泄漏产生的主涡流（Y1）产生通过微小间隙（H）的流动，并且将从主涡流（Y1）产生的流引导到微小间隙（H）。

10. 发明公开

EP2759678A4 TURBINE 有权转让
公开(公告)号：EP2759678A4
公开(公告)日：2015-05-06
申请号：EP12833997
申请日：2012-09-18
申请人： MITSUBISHI HITACHI POWER SYS
发明人： KUWAMURA YOSHIHIRO , MATSUMOTO KAZUYUKI , OYAMA HIROHARU , TANAKA YOSHINORI , MATSUO ASAHARU
IPC分类号： F01D11/08 , F01D5/22 , F01D11/00 , F01D11/02
CPC分类号： F01D11/08 , F01D5/225 , F01D11/001 , F01D11/02 , F05D2250/182
摘要： Provided is a turbine (1). One of a tip portion of a blade (50) and a portion of a partition plate outer ring (11) corresponding to the tip portion of the blade (50) is provided with a step part (52) having a step face (53) that protrudes toward the other, and the other is provided with seal fins (15) extending out with respect to the step part (52) and forming minute clearance (H) between the step part (52) and the other. The step part (52) facing the seal fins (15) is configured to protrude so that a cavity (C) forming a main vortex and counter vortex being formed by the main vortex are formed on an upstream side of the seal fins (15). The cavity (C) is formed so that an axial width dimension (W) and a radial height dimension (D) satisfy Formula (1) expressed by 0.45‰¤D/W‰¤2.67.

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