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1. 发明公开

EP3220018A4 SHAFT SEALING MECHANISM 审中-公开
公开(公告)号：EP3220018A4
公开(公告)日：2017-12-27
申请号：EP15869957
申请日：2015-12-15
申请人： MITSUBISHI HITACHI POWER SYS
发明人： OZAKI KOHEI , YOSHIDA AZUMI , UEHARA HIDEKAZU , SHINOHARA TANEHIRO , OYAMA HIROHARU
IPC分类号： F01D11/00 , F16J15/3284
CPC分类号： F01D11/025 , F01D11/001 , F02C7/28 , F05D2240/57 , F05D2240/59 , F16J15/22 , F16J15/3284 , F16J15/3292
摘要： Provided is a shaft sealing mechanism wherein the flexibility of thin-plate seal pieces can be maintained and vibration of the thin-plate seal pieces can be suppressed by partially thickening the thin-plate seal pieces. A shaft sealing mechanism (11) that partitions an annular space (14) that is formed between a fixed part (12) and a rotating shaft (13) into a high-pressure-side region and a low-pressure-side region, that obstructs the flow of a fluid (G), and that is provided with: a plurality of annularly laminated thin-plate seal pieces (22) that are fixed to an annular seal housing (21) that is provided to the fixed part (12) and are in sliding contact with the rotating shaft (13) ; and an annular low-pressure-side plate (26) that is sandwiched and held such that a low-pressure-side gap (´L) is formed between the seal housing (21) and a low-pressure-side side edge part (22d) of the thin-plate seal pieces (22). The thin-plate seal pieces (22) have a thick part (31) that is formed further to the inside in the radial direction of the rotating shaft than an inner-circumferential-side tip part (26a) of the low-pressure-side plate (26).

2. 发明公开

EP2444701A4 SHAFT SEAL DEVICE 有权转让
公开(公告)号：EP2444701A4
公开(公告)日：2017-01-18
申请号：EP10789181
申请日：2010-06-08
申请人： MITSUBISHI HITACHI POWER SYS
发明人： UEHARA HIDEKAZU , SHINOHARA TANEHIRO , NAKANO TAKASHI , NISHIMOTO SHIN , HIRAKAWA YUICHI
IPC分类号： F16J15/447 , F01D11/00 , F01D11/02 , F01D25/00 , F02C7/28 , F16J15/22 , F16J15/3292 , F16J15/44 , F16J15/453
CPC分类号： F16J15/4472 , F01D11/02 , F05D2240/57 , F16J15/3292 , F16J15/445

3. 发明公开

EP2824370A4 SHAFT SEAL DEVICE 审中-公开
公开(公告)号：EP2824370A4
公开(公告)日：2016-02-24
申请号：EP13757238
申请日：2013-02-01
申请人： MITSUBISHI HITACHI POWER SYS
发明人： UEHARA HIDEKAZU , SHINOHARA TANEHIRO , NISHIMOTO SHIN , NAKANO TAKASHI
IPC分类号： F16J15/22 , F01D11/00 , F01D11/02 , F02C7/28 , F16J15/3288 , F16J15/44 , F16J15/447 , F16J15/48
CPC分类号： F16J15/32 , F01D11/001 , F01D11/025 , F05D2240/59 , F16J15/3288 , F16J15/3292 , F16J15/442
摘要： Provided is a shaft sealing apparatus (1), which includes a seal ring (11) that is installed in an annular space between a rotor (2) and a stator surrounding an outer circumference side of the rotor (2), that is formed in a divided structure from a movable seal ring (12) and a stationary seal ring (13) whose circumferential ends are adjacent to each other, and that is configured so that the movable seal ring (12) is biased toward a radial outer side thereof by an elastic body (28), a seal body (9) that is formed by stacking a plurality of thin seal pieces (10), which extend from the seal ring toward a radial inner side of the rotor, in a circumferential direction of the rotor, and a communicating part (34) that causes the low-pressure side region and the high-pressure side region to communicate with each other.

4. 发明公开

EP2960558A4 SHAFT SEAL DEVICE AND ROTARY MACHINE 有权
标题翻译：轴密封装置及车床
公开(公告)号：EP2960558A4
公开(公告)日：2016-11-02
申请号：EP14754259
申请日：2014-02-13
申请人： MITSUBISHI HITACHI POWER SYS
发明人： UEHARA HIDEKAZU , NISHIMOTO SHIN , SHINOHARA TANEHIRO , OYAMA HIROHARU
IPC分类号： F16J15/44 , F01D11/00 , F02C7/28 , F16J15/16 , F16J15/32
CPC分类号： F16J15/3292 , F01D11/001 , F05D2240/59 , F16J15/3252
摘要： Disclosed is a shaft seal device (10) that partitions a space between a rotor (6) and a stator into a high-pressure side and a low-pressure side, the shaft seal device (10) comprising: a seal body (12) made by layering a plurality of thin-plate seal pieces (20) in the circumferential direction of the rotor, each thin-plate seal piece extending from the stator toward the rotor side; and a housing (9) that is fixed to the stator, holds the seal body (12) so as to surround the same from radially outside, and includes a first opposing surface (13) that opposes the high-pressure-side edge of the seal body (12) and a second opposing surface (22) that opposes the low-pressure-side edge (20a) of the seal body. The high-pressure-side clearance (t0) between the seal body (12) and the first opposing surface (13) is smaller than the low-pressure-side clearance (t1) between the seal body (12) and the second opposing surface (22), and a slope part (20b) that slopes gradually toward the high-pressure side toward the tip end, which is on the rotor side, is formed in the low-pressure-side edge (20a) of each thin-plate seal piece (20) of the seal body (12).

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

EP3217045A4 SHAFT SEAL MECHANISM 有权转让
公开(公告)号：EP3217045A4
公开(公告)日：2018-01-03
申请号：EP15869960
申请日：2015-12-15
申请人： MITSUBISHI HITACHI POWER SYS
发明人： UEHARA HIDEKAZU , OZAKI KOHEI , YOSHIDA AZUMI , OYAMA HIROHARU
IPC分类号： F16J15/22 , F01D11/00 , F02C7/28 , F16J15/3292 , F16J15/447
CPC分类号： F16J15/3276 , F01D11/00 , F02C7/28 , F05D2240/58 , F05D2300/501 , F16J15/22 , F16J15/3292 , F16J15/442 , F16J15/447
摘要： The purpose of the present invention is to provide a shaft seal mechanism that, even if pressing force is applied to thin-plate seal pieces, can suppress deformation due to the pressing force and prevent abrasion due to contact with a rotating shaft in the thin-plate seal pieces. In order to achieve the foregoing, a shaft seal mechanism (11) that blocks a fluid (G) flowing within a ring-shaped space (14) is equipped with: a ring-shaped seal housing (21) disposed on a fixed section (12); a plurality of thin-plate seal pieces (22) that are secured to the seal housing (21), are in sliding contact with a rotating shaft (13), and are layered in a ring shape; a ring-shaped high-pressure-side plate (25) that forms a high-pressure-side gap (´H) between itself and the seal housing (21); a ring-shaped low-pressure-side plate (26) that forms a low-pressure-side gap (´L) between the seal housing (21) and the thin-plate seal pieces (22); stepped sections (31, 32) that are formed on side edge sections (22c, 22d) of the thin-plate seal pieces (22); and locking sections (25b, 26b) that lock the stepped sections (31, 32).

7. 发明公开

EP3220019A4 SHAFT SEALING MECHANISM 有权转让
公开(公告)号：EP3220019A4
公开(公告)日：2017-12-27
申请号：EP15869958
申请日：2015-12-15
申请人： MITSUBISHI HITACHI POWER SYS
发明人： OZAKI KOHEI , UEHARA HIDEKAZU , YOSHIDA AZUMI , OYAMA HIROHARU
IPC分类号： F01D11/00 , F16J15/3284
CPC分类号： F02C7/28 , F01D11/001 , F01D11/003 , F04D29/10 , F05D2240/55 , F05D2240/57 , F05D2240/59 , F16J15/22 , F16J15/24 , F16J15/3292
摘要： Provided is a shaft sealing mechanism that, by making the pressure of fluid that flows between thin-plate seal pieces uniform, can eliminate the fluid pressure difference that acts on an upper surface and a lower surface of the thin-plate seal pieces and suppress vibration of the thin-plate seal pieces. A shaft sealing mechanism (11) that partitions an annular space (14) that is formed between a fixed part (12) and a rotating shaft (13) into a high-pressure-side region and a low-pressure-side region, that obstructs the flow of a fluid (G), and that is provided with: a plurality of annularly laminated thin-plate seal pieces (22) that are fixed to an annular seal housing (21) that is provided to the fixed part (12) and are in sliding contact with the rotating shaft (13) ; and an annular low-pressure-side plate (26) that is sandwiched and held such that a low-pressure-side gap (´L) is formed between the seal housing (21) and a low-pressure-side side edge part (22d) of the thin-plate seal pieces (22). The thin-plate seal pieces (22) have pressure-conduction holes (31) that are formed further to the inside in the radial direction of the rotating shaft than an inner-circumferential-side tip part (26a) of the low-pressure-side plate (26).

8. 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）。

9. 发明公开

EP2634459A4 SHAFT SEAL MECHANISM AND ROTARY MACHINE PROVIDED WITH SAME 有权
标题翻译：轴封机制和如此装备的旋转机械
公开(公告)号：EP2634459A4
公开(公告)日：2017-01-25
申请号：EP11836337
申请日：2011-10-26
申请人： MITSUBISHI HITACHI POWER SYS
发明人： UEHARA HIDEKAZU , SHINOHARA TANEHIRO , NISHIMOTO SHIN , NAKANO TAKASHI , ARAKI MASATO , TAKAHASHI TATSUJI
IPC分类号： F16J15/22 , F01D11/00 , F01D11/02 , F02C7/28 , F16J15/3292
CPC分类号： F16J15/447 , F01D11/025 , F05D2240/57 , F16J15/3292
摘要： A shaft seal structure capable of preventing a seal body of the shaft seal structure of a rotation body from being held in an inclined posture even when the seal body is inclined is provided. It includes, an accommodation body (9), a seal body (12) including thin plate seal pieces (20), and a plate body (17) covering one end in the axial direction (20d) of the seal body (12). A recessed portion (31) recessing in the axis direction, and a protruding portion projecting to the other side from the recessed portion (31) are formed on one of the plate surface (17c) of the plate body (17) and the inner wall surface (9e) of the accommodation body (9). When the protruding portion abuts the other side and a pocket (X), the recessed portion(31) communicates with the pocket (X) and the fluid low pressure region.

10. 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.

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