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公开(公告)号：EP2141363A2
公开(公告)日：2010-01-06
申请号：EP09164093.8
申请日：2009-06-30
申请人： Hitachi, Ltd.
发明人： Yamaguchi, Kazuyuki , Magara, Yohei , Yoshida, Toyomi , Takagi, Michiyuki , Murata, Kenichi , Kudo, Takeshi
IPC分类号： F04D29/10
CPC分类号： F04D29/102 , F01D11/001 , F01D11/02 , F01D11/08 , F05D2250/182 , F16J15/441 , F16J15/4472 , Y10T29/49297 , Y10T29/4932
摘要： Disclosed herein is a turbomachinery including a labyrinth seal easy to fabricate and adapted to prevent unstable vibration of a rotor.
A turbomachinery according to this invention includes a labyrinth seal 2 formed by dividing the seal into segments 7 in a circumferential direction and combining the segments 7 whose comb teeth 5 differ in height. The labyrinth seal 2 preferably includes two kinds of segments 7 whose comb teeth 5 differ in height for each kind of segment, and the segments 7a of the greater comb tooth height are arranged in a certain reference direction on a cross section right-angled to a rotational axis, and in a direction opposite to the reference direction, and the segments 7b of the smaller comb tool height are arranged in a direction right-angled to the reference direction, and in a direction opposite to that right-angled to the reference direction.摘要翻译： 本文公开了一种涡轮机械，其包括易于制造并适于防止转子不稳定振动的迷宫式密封件。 根据本发明的涡轮机械包括迷宫式密封件2，其通过将密封件沿圆周方向分割成段7而形成，并组合其梳齿5的高度不同的段7。 迷宫式密封件2优选地包括两种类型的节段7，其梳齿5对于每种类型的节段的高度不同，并且较大梳齿高度的节段7a在一定的参考方向上布置在直角至 旋转轴线和与参考方向相反的方向，并且较小梳齿刀具高度的段7b沿与参考方向成直角的方向布置，并且在与参考方向成直角的方向上相反的方向 。
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公开(公告)号：EP2141363A3
公开(公告)日：2010-11-03
申请号：EP09164093.8
申请日：2009-06-30
申请人： Hitachi, Ltd.
发明人： Yamaguchi, Kazuyuki , Magara, Yohei , Yoshida, Toyomi , Takagi, Michiyuki , Murata, Kenichi , Kudo, Takeshi
CPC分类号： F04D29/102 , F01D11/001 , F01D11/02 , F01D11/08 , F05D2250/182 , F16J15/441 , F16J15/4472 , Y10T29/49297 , Y10T29/4932
摘要： Disclosed herein is a turbomachinery including a labyrinth seal easy to fabricate and adapted to prevent unstable vibration of a rotor.
A turbomachinery according to this invention includes a labyrinth seal 2 formed by dividing the seal into segments 7 in a circumferential direction and combining the segments 7 whose comb teeth 5 differ in height. The labyrinth seal 2 preferably includes two kinds of segments 7 whose comb teeth 5 differ in height for each kind of segment, and the segments 7a of the greater comb tooth height are arranged in a certain reference direction on a cross section right-angled to a rotational axis, and in a direction opposite to the reference direction, and the segments 7b of the smaller comb tool height are arranged in a direction right-angled to the reference direction, and in a direction opposite to that right-angled to the reference direction.摘要翻译： 本文公开了一种涡轮机械，其包括易于制造并且适于防止转子的不稳定振动的迷宫式密封件。 根据本发明的涡轮机械包括迷宫式密封件2，该迷宫式密封件2通过将密封件沿圆周方向分成段7并且组合其梳齿5高度不同的段7而形成。 迷宫式密封件2优选地包括两种类型的区段7，其梳齿5在每种类型的区段中高度不同，并且较大梳齿高度的区段7a在一定的基准方向上布置在与 并且在与参考方向相反的方向上，并且较小梳具高度的片段7b被布置在与参考方向成直角的方向上，并且在与参考方向成直角的方向上相反的方向上 。
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公开(公告)号：EP2141363B1
公开(公告)日：2012-08-01
申请号：EP09164093.8
申请日：2009-06-30
申请人： Hitachi, Ltd.
发明人： Yamaguchi, Kazuyuki , Magara, Yohei , Yoshida, Toyomi , Takagi, Michiyuki , Murata, Kenichi , Kudo, Takeshi
CPC分类号： F04D29/102 , F01D11/001 , F01D11/02 , F01D11/08 , F05D2250/182 , F16J15/441 , F16J15/4472 , Y10T29/49297 , Y10T29/4932
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公开(公告)号：EP0703368B1
公开(公告)日：2001-07-25
申请号：EP95113297.6
申请日：1995-08-24
发明人： Ueyama, Yoshiharu , Takagi, Michiyuki , Takano, Yasushi , Iwase, Yukiji , Ida, Michiaki , Tanaka, Sadashi , Nagaoka, Yoshihiro , Yoshida, Tetsuya
CPC分类号： F04D29/669 , F04D1/063 , F04D17/125 , F04D29/444 , F04D29/448 , F04D29/668
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公开(公告)号：EP0703368A3
公开(公告)日：1998-04-01
申请号：EP95113297.6
申请日：1995-08-24
发明人： Ueyama, Yoshiharu , Takagi, Michiyuki , Takano, Yasushi , Iwase, Yukiji , Ida, Michiaki , Tanaka, Sadashi , Nagaoka, Yoshihiro , Yoshida, Tetsuya
CPC分类号： F04D29/669 , F04D1/063 , F04D17/125 , F04D29/444 , F04D29/448 , F04D29/668
摘要： In a fluidal machine with an impeller (7) rotating to urge a fluid radially outwardly by a centrifugal force, a vane guiding the fluid discharged from the impeller, a vane member (4) which includes a front end of the vane facing to the impeller so that the fluid discharged from the impeller (7) strikes against the front end and which is prevented from contacting the atmosphere, and a casing (1, 3) surrounding the vane member (4) and contacting the atmosphere, the vane member (4) is discrete from the casing (1, 3), a vibration propagation between the vane member (4) and the casing (1, 3) is prevented or restrained, and a vibration of a pipe (12) extending from the casing (1, 3) is absorbed.
摘要翻译： 在具有旋转以通过离心力径向向外推动流体的叶轮（7）的流体机器中，引导从叶轮排出的流体的叶片，叶片构件（4），其包括面向叶轮的叶片的前端 使得从叶轮（7）排出的流体撞击前端并防止其与大气接触，以及围绕叶片构件（4）并与大气接触的壳体（1,3），叶片构件（4） ）从壳体（1,3）离散，防止或限制叶片构件（4）和壳体（1,3）之间的振动传播，并且从壳体（1）延伸的管（12）的振动 ，3）被吸收。
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公开(公告)号：EP0703368A2
公开(公告)日：1996-03-27
申请号：EP95113297.6
申请日：1995-08-24
发明人： Ueyama, Yoshiharu , Takagi, Michiyuki , Takano, Yasushi , Iwase, Yukiji , Ida, Michiaki , Tanaka, Sadashi , Nagaoka, Yoshihiro , Yoshida, Tetsuya
CPC分类号： F04D29/669 , F04D1/063 , F04D17/125 , F04D29/444 , F04D29/448 , F04D29/668
摘要： In a fluidal machine with an impeller (7) rotating to urge a fluid radially outwardly by a centrifugal force, a vane guiding the fluid discharged from the impeller, a vane member (4) which includes a front end of the vane facing to the impeller so that the fluid discharged from the impeller (7) strikes against the front end and which is prevented from contacting the atmosphere, and a casing (1, 3) surrounding the vane member (4) and contacting the atmosphere, the vane member (4) is discrete from the casing (1, 3), a vibration propagation between the vane member (4) and the casing (1, 3) is prevented or restrained, and a vibration of a pipe (12) extending from the casing (1, 3) is absorbed.
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公开(公告)号：EP2453111A2
公开(公告)日：2012-05-16
申请号：EP11188368.2
申请日：2011-11-09
申请人： Hitachi, Ltd.
发明人： Endo, Akira , Yamaguchi, Kazuyuki , Magara, Yohei , Yoshida, Toyomi , Takagi, Michiyuki , Murata, Kenichi , Kudo, Takeshi
IPC分类号： F01D11/02
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 沿着旋转轴2的外周移动的泄漏流LS.空隙部14分别设置在密封环13中的空腔12的外周侧，以沿着旋转轴2的周向延伸并且连通 空腔12以周向间隔暂时缓解在空腔内沿圆周方向的泄漏流量。
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8.发明授权
公开(公告)号：EP0201894B1
公开(公告)日：1991-07-31
申请号：EP86106410.3
申请日：1986-05-12
申请人： HITACHI, LTD.
IPC分类号： F16C39/06
CPC分类号： F16C32/0453 , F16C32/048
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9.发明公开
公开(公告)号：EP0201894A3
公开(公告)日：1988-08-03
申请号：EP86106410
申请日：1986-05-12
申请人： HITACHI, LTD.
IPC分类号： F16C39/06
CPC分类号： F16C32/0453 , F16C32/048
摘要： @ The present invention consists in lowering the resonance amplitude of the rotational frequency-synchronous unbalance vibration of a rotor supported by an electromagnetic bearing. To this end, the invention disposes an X-direction control servo circuit and a Y-direction control servo circuit each of which detects the deviation of the rotor from a desired position in the radial direction thereof and controls the rotor so as to be held at the desired position on the basis of the detection signal, and a tracking filter (7) which is synchronous with a rotational frequency. Outputs from the filter (7) are crossed to supply the Y-direction control servo circuit with the X-directional signal ( XN ) of the outputs and to supply the X-direction control servo circuit with the Y-directional signal (y N ).
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公开(公告)号：EP0201894A2
公开(公告)日：1986-11-20
申请号：EP86106410.3
申请日：1986-05-12
申请人： HITACHI, LTD.
IPC分类号： F16C39/06
CPC分类号： F16C32/0453 , F16C32/048
摘要： @ The present invention consists in lowering the resonance amplitude of the rotational frequency-synchronous unbalance vibration of a rotor supported by an electromagnetic bearing.
To this end, the invention disposes an X-direction control servo circuit and a Y-direction control servo circuit each of which detects the deviation of the rotor from a desired position in the radial direction thereof and controls the rotor so as to be held at the desired position on the basis of the detection signal, and a tracking filter (7) which is synchronous with a rotational frequency.
Outputs from the filter (7) are crossed to supply the Y-direction control servo circuit with the X-directional signal ( XN ) of the outputs and to supply the X-direction control servo circuit with the Y-directional signal (y N ).
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