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1. 发明专利

FR2644018B1 未知
公开(公告)号：FR2644018B1
公开(公告)日：1992-09-18
申请号：FR9002430
申请日：1990-02-27
申请人： HITACHI LTD
发明人： MATSUSHITA OSAMI , TAKAGI MICHIYUKI , YOSHIDA TOYOMI , TAKAHASHI NAOHIKO , SAITOH IKUHIRO
IPC分类号： F16C39/06 , G05B11/36 , F16C32/04 , G05D3/12 , G06F17/10 , H03H17/02 , H03H7/12 , G01H11/04
摘要： A band pass filter multiplies an input waveform with first trigonometric functions at a plurality of frequencies and then filters the products. Furthermore, with that filtering step, the products are multiplied, or their phase is changed by a predetermined value, and the results are multiplied by the inverse of the trigonometric functions. The sum of this, for all frequencies, generated a filtered output waveform. Where the input waveform has two components, the corresponding outputs can be obtained from the read and imaginary components of the output waveform. In practice the trigonometric functions are produced by sine and cosine components at each frequency. In this way a band pass filter device is formed which is suitable for use in the control system of an apparatus which must be controlled continuously, such as a control system for a rotor.

2. 发明专利

FR2644018A1 未知
公开(公告)号：FR2644018A1
公开(公告)日：1990-09-07
申请号：FR9002430
申请日：1990-02-27
申请人： HITACHI LTD
发明人： MATSUSHITA OSAMI , TAKAGI MICHIYUKI , YOSHIDA TOYOMI , TAKAHASHI NAOHIKO , SAITOH IKUHIRO
IPC分类号： F16C39/06 , G05B11/36 , F16C32/04 , G05D3/12 , G06F17/10 , H03H17/02
摘要： A band pass filter multiplies an input waveform with first trigonometric functions at a plurality of frequencies and then filters the products. Furthermore, with that filtering step, the products are multiplied, or their phase is changed by a predetermined value, and the results are multiplied by the inverse of the trigonometric functions. The sum of this, for all frequencies, generated a filtered output waveform. Where the input waveform has two components, the corresponding outputs can be obtained from the read and imaginary components of the output waveform. In practice the trigonometric functions are produced by sine and cosine components at each frequency. In this way a band pass filter device is formed which is suitable for use in the control system of an apparatus which must be controlled continuously, such as a control system for a rotor.

3. 发明专利

JPH06273254A CALCULATION OF EQUIVALENT CORRECTED WEIGHT OF ELASTIC ROTOR 失效
公开(公告)号：JPH06273254A
公开(公告)日：1994-09-30
申请号：JP5840093
申请日：1993-03-18
申请人： HITACHI LTD
发明人： YOSHIDA TOYOMI , MATSUSHITA OSAMI , TAKAGI YUKISHI
IPC分类号： F16F15/32 , F16F15/34 , F16F15/36 , G01M1/32
摘要： PURPOSE:To increase the balance effect even if the balance weight quantity is small by converting the balance weight obtained at the shaft edge part in an equivalent form by the field balance and carrying out the development to the inside of a rotor as the essential imbalance generation position. CONSTITUTION:A rotor 1 is supported by the bearing 4 such as oil bearing and magnetic bearing at the left and right parts. Further, the rotor 1 is equipped with an impeller 2, and the imbalance 3 existing on the impeller 2 requires the balance due to the field balance. The dangerous speed mode is represented by the synthesis of the rigid body mode (two pieces) and the bearing 4 is pin- restrained, and the N+2 surface balance weight for these modes is calculated on the basis of the balance weight obtained at the shaft edge part of the rotor 1 by the field balance, and these balance weights are converted into an equivalent form in the inside of the rotor 1.

4. 发明专利

JPH03213716A ROTARY SHAFT CONTROL DEVICE 失效
公开(公告)号：JPH03213716A
公开(公告)日：1991-09-19
申请号：JP610490
申请日：1990-01-17
申请人： HITACHI LTD
发明人： TAKAHASHI NAOHIKO , MATSUSHITA OSAMI , TAKAGI YUKISHI , YOSHIDA TOYOMI
IPC分类号： F16C32/04 , G05B13/04
摘要： PURPOSE:To improve the accuracy of state estimation so as to increase stability in high rotation by providing an observer, having mechanism for changing an arithmetic parameter according to the rotating speed of a rotary shaft, inside a control device. CONSTITUTION:A sensor 2 fitted at a rotor 1 detects the radial displacement and rotating speed of the rotor 1. In an observer parameter setting device 3, a parameter setting part 31 fetches an appropriate parameter from an observer parameter table 32 according to the detected rotating speed and delivers it to an observer arithmetic part 4. The state estimated amount obtained by the observer arithmetic part 4 is fed back to an electromagnetic bearing device 6 by a regulator 5. The accuracy of state estimation is thus improved, and therefore stability in high rotation can be increased.

5. 发明专利

JP2010007611A Turbo-machine 有权
标题翻译： TURBO-MACHINE
公开(公告)号：JP2010007611A
公开(公告)日：2010-01-14
申请号：JP2008169773
申请日：2008-06-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAGUCHI KAZUYUKI , MAGARA YOHEI , YOSHIDA TOYOMI , TAKAGI YUKISHI , MURATA KENICHI , KUDO TAKESHI
IPC分类号： F01D11/02 , F16J15/447
CPC分类号： F04D29/102 , F01D11/001 , F01D11/02 , F01D11/08 , F05D2250/182 , F16J15/441 , F16J15/4472 , Y10T29/49297 , Y10T29/4932
摘要： PROBLEM TO BE SOLVED: To provide a turbo-machine including a labyrinth seal easy to fabricate and adapted to prevent unstable vibration of a rotor. SOLUTION: The turbo-machine 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. Segments 7a of the greater height of the comb tooth 5 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. Segments 7b of the smaller height of the comb tooth 5 are arranged in a direction right-angled to the reference direction, and in a direction opposite to the direction right-angled to the reference direction. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种易于制造并适于防止转子不稳定振动的迷宫式密封件的涡轮机。解决方案：涡轮机包括迷宫式密封件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对于每种节段的高度不同。梳齿5的较大高度的部分7a在与旋转轴成直角的横截面上并且沿与参考方向相反的方向沿特定的参考方向布置。梳齿5的较小高度的部分7b沿与参考方向成直角的方向并且沿与与参考方向成直角的方向相反的方向布置。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JPH03216011A FOURIER TRANSFORMATION BAND PASS FILTER TYPE CONTROLLER 失效
公开(公告)号：JPH03216011A
公开(公告)日：1991-09-24
申请号：JP1064290
申请日：1990-01-22
申请人： HITACHI LTD
发明人： MATSUSHITA OSAMI , TAKAGI YUKISHI , YOSHIDA TOYOMI , TAKAHASHI NAOHIKO , SAITOU IKUHIRO
IPC分类号： G05B11/36 , G05D3/12 , H03H17/02
摘要： PURPOSE:To apply a vibration waveform even when it is not a periodic function by adopting the method multiplying a trigonometric function of a vibration frequency component to be extracted with an original vibration waveform. CONSTITUTION:A complex number vibration displacement Zin is multiplied respectively with trigonometric functions e and e respectively to extract forward and backward vibration components at a multiplier 1. Then a low pass filter (with control rule) 2 extracts the signal and multiplies each vibration frequency component with control rules ake and bke (k=1-N) in forward and backward directions. Then in order to restore the waveform into the vibration waveform of the original extracted vibration frequency component by a multiplier 3, the functions e and e are multiplied respectively to the forward and backward component to reproduce the vibration waveform for control at each vibration frequency component and they are collected to obtain an output signal Zout. Thus, the vibration waveform is applied even when it is not a periodic function.

7. 发明专利

JPH02227701A FOURIER TRANSFORMATION BAND PASS FILTER TYPE CONTROLLER 失效
公开(公告)号：JPH02227701A
公开(公告)日：1990-09-10
申请号：JP4652989
申请日：1989-03-01
申请人： HITACHI LTD
发明人： MATSUSHITA OSAMI , TAKAGI MICHIYUKI , YOSHIDA TOYOMI , TAKAHASHI NAOHIKO , SAITOU IKUHIRO
IPC分类号： F16C32/04 , F16C39/06 , G05B11/36 , G05D3/12 , G06F17/10 , H03H17/02
摘要： PURPOSE:To attain the application of a vibrating waveform even if it is not equal to a periodic product by obtaining the average value of the vibrating frequency component to be extracted by multiplying a trigonometrical function of the vibrating frequency component by an original vibrating waveform. CONSTITUTION:The complex number vibrating frequency of the double channel input is defined as Zin(t)=xin(t)+jyin(t), where (j) shows an imaginary unit. For the Fourier transformation, Zin(t)=A0+SIGMAKN=i(Akexp(jomegakt)+Bkexp(-jomegakt) is satisfied. The original oscillation frequency is multiplied by the trigonometri cal functions exp(-jomegakt) and exp(+jomegakt) via a multiplier I to obtain the average values Ak and Bk respectively. Thus a band pass filter BPF is obtained to extract A0, Ak, B0 and Bk (k = 1 - N). Then akexp(jthetak) and bkexp(-jdeltak) of the control side are multiplied by each vibrating frequency via a low pass filter LPF 2 with control. A vibrating waveform for control is produced by multiplying exp(jomegakt) and exp(-jomegakt) via a multiplier II. These vibrating waveforms are gathered for acquisition of an output signal Zout.

8. 发明专利

JP2009299528A Turbomachine 审中-公开
标题翻译：涡轮机
公开(公告)号：JP2009299528A
公开(公告)日：2009-12-24
申请号：JP2008153016
申请日：2008-06-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAGUCHI KAZUYUKI , MAGARA YOHEI , YOSHIDA TOYOMI , TAKAGI YUKISHI
IPC分类号： F04D29/56 , F01D9/02 , F01D17/16 , F02C7/24 , F02C9/22 , F04D29/66
摘要： PROBLEM TO BE SOLVED: To prevent deterioration of fluid performance during a rated load operation of a turbomachine and to reduce vibration stress to moving blades caused by slip stream of stator blades during partial rotation speed operation. SOLUTION: The turbomachine is equipped with a rotor having a plurality of moving blades extended in the radial direction on its outer periphery, a casing rotatably holding the rotor thereinside and forming a flow passage for leading a fluid to the moving blades to the rotor, and a plurality of variable stator blades distributed in the circumferential direction in the flow passage formed in the casing and in which mounting angles can be changed during the partial rotation speed operation. The variable stator blades are uniformly distributed in the circumferential direction of the casing and the change amount of mounting angles during the partial rotation speed operation are non-uniform. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了防止在涡轮机的额定负载运行期间的流体性能的劣化，并且在部分转速操作期间减少由定子叶片的滑动流引起的对动叶片的振动应力。解决方案：涡轮机配备有转子，转子具有在其外周沿径向方向延伸的多个活动叶片，壳体可旋转地将转子保持在其内部并形成用于将流体引导到活动叶片的流动通道转子，以及在形成于壳体中的流路中在圆周方向上分布的多个可变定子叶片，并且在部分转速操作期间可以改变安装角度。可变定子叶片在壳体的圆周方向上均匀分布，并且部分转速操作期间的安装角度的变化量不均匀。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JPH02244205A FOURIER TRANSFORMING DEVICE AND FOURIER TRANSFORMING METHOD 失效
公开(公告)号：JPH02244205A
公开(公告)日：1990-09-28
申请号：JP6373489
申请日：1989-03-17
申请人： HITACHI LTD
发明人： YOSHIDA TOYOMI , MATSUSHITA OSAMI
IPC分类号： G05B21/02 , G06F17/14
摘要： PURPOSE:To attain the real time analysis of a waveform by multiplying the new vibration waveform value by the small weight value according to the stored old mean vibration waveform and defining the new mean vibration waveform value with addition of the new vibration waveform when the new vibration waveform value is stored in a mean vibration waveform value area at the corresponding time for each sampling cycle. CONSTITUTION:The newly sampled vibration waveform value is stored in a memory of the corresponding order with the time mean addition of the memory. Then N pieces of new complex amplitude value Ck' are obtained via an equation 1 in a range covering K = 0 through N - 1 for each sampling of a vibration waveform based on the old complex amplitude value Ch already obtained as well as the difference between the new mean vibration waveform value -Xin and the old mean vibration waveform value -Xout so far stored. Then these values Ck' are updated. Thus it is possible to obtain a high speed controller which is immune to the noises and errors and can extremely shorten the calculating time.

10. 发明专利

JP2014152696A Labyrinth seal device, and turbomachine using the same 审中-公开
标题翻译： LABYRINTH SEAL DEVICE，和TURBOMACHINE WITH THE SAME
公开(公告)号：JP2014152696A
公开(公告)日：2014-08-25
申请号：JP2013022802
申请日：2013-02-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ENDO AKIRA , YAMAGUCHI KAZUYUKI , NISHIJIMA NORIYO , MURATA KENICHI , KUDO TAKESHI , MAGARA YOHEI , YOSHIDA TOYOMI
IPC分类号： F01D11/02 , F01D11/08
摘要： PROBLEM TO BE SOLVED: To provide a labyrinth seal device capable of effectively reducing a flow in a rotating direction at a labyrinth seal inlet to suppress unstable vibration of a rotating shaft, and reducing generation of vibration by contact with the rotating shaft and abrasion of a seal fin.SOLUTION: A labyrinth seal device 1 having a seal fin 11 disposed on an outer peripheral face of a rotating body and projecting to an outer peripheral side in the radial direction of the rotating body, and a seal ring 13 fixed to a stationary body enclosing the rotating body so as to face the seal fin, includes a projecting portion 14 formed on an inner peripheral face of the seal ring and projecting to an inner peripheral side in the radial direction of the seal ring, a plurality of flow straightening holes 15 formed in the radial direction and the circumferential direction of the projecting portion, penetrating through both axial side wall faces of the projecting portion, and reducing a speed component in the rotating direction of the rotating body, of a leakage flow passing through the holes, and the seal fin 11 disposed in opposition to an inner peripheral face of the projecting portion.
摘要翻译：要解决的问题：提供一种迷宫式密封装置，能够在迷宫式密封入口处有效地减少旋转方向的流动，以抑制旋转轴的不稳定的振动，并且通过与旋转轴的接触减少振动的产生和磨损密封翅片。解决方案：一种迷宫式密封装置1，其具有设置在旋转体的外周面上的突出于旋转体的径向外周侧的密封翅片11，以及固定在静止状态的密封环13 包围旋转体以与密封翅片相对的主体包括形成在密封环的内周面上的突出部分14，并且在密封环的径向方向上突出到内周侧，多个流动矫直孔 15形成在突出部的径向方向和周向上，贯通突出部的两个轴向侧壁面，并且降低速度旋转体的旋转方向的分量，穿过孔的泄漏流以及与突出部的内周面相对配置的密封翅片11。

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