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    Two-stage centrifugal compressor
    2.
    发明授权
    Two-stage centrifugal compressor 失效
    两级离心压缩机

    公开(公告)号：US06196809B1

    公开(公告)日：2001-03-06

    申请号：US09023686

    申请日：1998-02-13

    申请人： Kazuki Takahashi ,  Haruo Miura ,  Hideo Nishida ,  Naohiko Takahashi ,  Yasuo Fukushima

    发明人： Kazuki Takahashi ,  Haruo Miura ,  Hideo Nishida ,  Naohiko Takahashi ,  Yasuo Fukushima

    IPC分类号： F04B2300

    CPC分类号： F04D29/4206 ,  F04D25/16 ,  F04D29/5826

    摘要： A low pressure-side first-stage compressor impeller and a high pressure-side second-stage compressor impeller are mounted respectively on opposite ends of a rotation shaft. A rotor of an electric motor for driving the two impellers is formed at a central portion of the rotation shaft. A stator of the motor is held by a motor casing. The motor casing, a first-stage compressor casing, which cooperates with the first-stage compressor impeller to form a first-stage compressor, and a second-stage compressor casing, which cooperates with the second-stage compressor impeller to form a second-stage compressor, are cast into an integral construction. This integral casing is further formed integrally with an intermediate cooler, disposed downstream of the first-stage compressor, and a discharge cooler disposed downstream of the second-stage compressor. The intermediate cooler and the discharge cooler are disposed below the motor casing in generally parallel relation to the rotation shaft, and the main portions of the two-stage centrifugal compressor are combined into a compact, generally rectangular parallelepiped configuration.

    摘要翻译： 低压侧的第一级压缩机叶轮和高压侧的后级的压缩机叶轮分别安装在旋转轴的两端。 用于驱动两个叶轮的电动机的转子形成在旋转轴的中心部分。 马达的定子由马达壳体保持。 电动机壳体，与第一级压缩机叶轮配合形成第一级压缩机的第一级压缩机壳体和与第二级压缩机叶轮配合形成第二级压缩机叶轮的第二级压缩机壳体， 阶段压缩机，铸造成一体化结构。 该一体式外壳进一步与布置在第一级压缩机下游的中间冷却器一体地形成，并且设置在第二级压缩机的下游。 中间冷却器和排放冷却器以大致平行于旋转轴的方式设置在电动机壳体下方，并且两级离心压缩机的主要部分组合成紧凑的大致长方体形状。

    Multi-stage compressor having first and second passages for cooling a motor during load and non-load operation
    3.
    发明授权
    Multi-stage compressor having first and second passages for cooling a motor during load and non-load operation 失效
    具有用于在负载和非负载操作期间冷却电动机的第一和第二通道的多级压缩机

    公开(公告)号：US5980218A

    公开(公告)日：1999-11-09

    申请号：US921604

    申请日：1997-09-02

    申请人： Kazuki Takahashi ,  Haruo Miura ,  Hideo Nishida ,  Naohiko Takahashi

    发明人： Kazuki Takahashi ,  Haruo Miura ,  Hideo Nishida ,  Naohiko Takahashi

    IPC分类号： F04D13/06 ,  F04D17/12 ,  F04D25/16 ,  F04D29/04 ,  F04D29/058 ,  F04D29/58 ,  F04B25/00 ,  F04B39/06

    CPC分类号： F04D29/058 ,  F04D17/12 ,  F04D25/06 ,  F04D29/5806 ,  F04D29/584 ,  F16C32/0489 ,  F16C37/005

    摘要： A multi-stage compressor having at least two compressor stages comprises an inter-cooler provided between the stages for cooling a gas being discharged from a compressor in the preceding stage. The compressor stages are driven by a common electric motor, of which a rotating shaft is supported by magnetic bearings. A part of the gas cooled by the inter-cooler and a part of the work gas discharged from a bleed valve provided down-stream of a rear stage of the compressor are selectively introduced into the electric motor or the magnetic bearings. Thus, at the time of load operation the gas discharged from the inter-cooler is introduced into the motor or the magnetic bearings to cool them, and at the time of non-load operation the gas discharged from the bleed valve is introduced into the motor or the magnetic bearings to cool them. It is possible to ensure a flow rate of gas required for cooling the motor during non-load operation with economy during load operation.

    摘要翻译： 具有至少两个压缩机级的多级压缩机包括设置在级之间的中间冷却器，用于在前级中冷却从压缩机排出的气体。 压缩机级由公共电动机驱动，其中旋转轴由磁性轴承支撑。 通过中间冷却器冷却的气体的一部分和从设置在压缩机的后级下游的排气阀排出的一部分工作气体被选择性地引入电动机或磁性轴承。 因此，在负载运转时，将从中间冷却器排出的气体引入电动机或磁性轴承中进行冷却，在非负载运转时，从排气阀排出的气体被引入到电动机 或磁轴承来冷却它们。 可以在负载运行时经济地确保在非负载运行期间冷却电机所需的气体流量。

    Magnetic bearing, rotating machine mounting the same, and method for driving rotating machine
    4.
    发明授权
    Magnetic bearing, rotating machine mounting the same, and method for driving rotating machine 有权
    磁轴承，旋转机安装相同，以及驱动旋转机器的方法

    公开(公告)号：US6111333A

    公开(公告)日：2000-08-29

    申请号：US261237

    申请日：1999-03-03

    申请人： Naohiko Takahashi ,  Tsunehiro Endo ,  Haruo Miura ,  Minoru Yoshihara ,  Yasuo Fukushima ,  Kazuki Takahashi

    发明人： Naohiko Takahashi ,  Tsunehiro Endo ,  Haruo Miura ,  Minoru Yoshihara ,  Yasuo Fukushima ,  Kazuki Takahashi

    IPC分类号： F16C32/04 ,  F16C39/06 ,  H02K7/09 ,  H02P6/08 ,  G05B1/02 ,  H02K11/00

    CPC分类号： H02P6/085 ,  F16C32/0453 ,  F16C32/0489 ,  H02K7/09 ,  F16C2360/42

    摘要： In a rotating machine with employment of a sensor-less DC brushless motor, a terminal voltage of a motor is corrected in a phase corrector by using a motor phase current signal. At this time, the terminal voltage is processed in an integrator and a comparator so as to be converted into an ON/OFF signal having a duty ratio of 1:1. Then, a rotation signal is produced based on an induced voltage which is generated by rotating a permanent magnet rotor, so that a rotation sensor is no longer required. On the other hand, an output derived from the phase corrector is entered as a 1-pulse/1-rotation output signal into a PLL circuit. The PLL circuit contains a phase comparator, a low-pass filter, an oscillator, and a counter. The PLL circuit frequency-divides the 1-pulse/1-rotation output signal. The sine wave data are stored into a ROM with respect to each of the frequency-divided signal positions. The unbalance vibrations of the magnetic bearing are controlled every frequency-divided signal.

    摘要翻译： 在使用无传感器的直流无刷电动机的旋转机器中，通过使用电动机相电流信号在相位校正器中校正电动机的端子电压。 此时，在积分器和比较器中对终端电压进行处理，以转换成占空比为1:1的ON / OFF信号。 然后，基于通过旋转永久磁铁转子而产生的感应电压产生旋转信号，从而不再需要旋转传感器。 另一方面，从相位校正器得到的输出作为1脉冲/ 1转输出信号输入到PLL电路中。 PLL电路包含一个相位比较器，一个低通滤波器，一个振荡器和一个计数器。 PLL电路对1脉冲/ 1转输出信号进行频率分频。 相对于每个分频信号位置，将正弦波数据存储到ROM中。 每个分频信号控制磁轴承的不平衡振动。

    Turbo compressor
    6.
    发明授权
    Turbo compressor 有权
    涡轮压缩机

    公开(公告)号：US06692224B2

    公开(公告)日：2004-02-17

    申请号：US10097611

    申请日：2002-03-15

    申请人： Haruo Miura ,  Kazuo Takeda ,  Naohiko Takahashi ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tomoyuki Ishikawa

    发明人： Haruo Miura ,  Kazuo Takeda ,  Naohiko Takahashi ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tomoyuki Ishikawa

    IPC分类号： F04D2958

    CPC分类号： F04D25/163 ,  F04D29/5826

    摘要： A turbo compressor, comprising two (2) pieces of rotation shafts, being disposed in parallel with each other, wherein impellers are attached on both ends of one of the rotation shafts, thereby to build up a first-stage compressor and a second-stage compressor, while an impeller on one end of the other rotation shaft, thereby to build up a third-stage compressor. In a lower side of each of the compressors, an intercooler and an after-cooler are disposed in alignment with, for cooling down an operation gas compressed in each stage. The operation gas is guided into the first-stage compressor on a side opposing to a motor, into the second-stage compressor on a side of the motor, and into the third-stage compressor on the side opposing to the motor, in the order thereof.

    摘要翻译： 一种涡轮压缩机，包括两个彼此平行地设置的旋转轴（2），其中叶轮安装在一个旋转轴的两端，从而构建第一级压缩机和第二级 压缩机，同时在另一旋转轴的一端上的叶轮，从而构建第三级压缩机。 在每个压缩机的下侧，中间冷却器和后冷却器设置成对准，以冷却在每个级中压缩的操作气体。 操作气体在与电动机相对的一侧被引导到第一级压缩机中，并且在电动机一侧的第二级压缩机中被引导到与电动机相对的一侧的第三级压缩机中 其中。

    Labyrinth sealing device, and fluid machine providing the same
    8.
    发明授权
    Labyrinth sealing device, and fluid machine providing the same 失效
    迷宫式密封装置，以及提供相同的流体机械

    公开(公告)号：US6039535A

    公开(公告)日：2000-03-21

    申请号：US102562

    申请日：1998-06-23

    申请人： Hiromi Kobayashi ,  Hideo Nishida ,  Haruo Miura ,  Takashi Eino ,  Kazuki Takahashi

    发明人： Hiromi Kobayashi ,  Hideo Nishida ,  Haruo Miura ,  Takashi Eino ,  Kazuki Takahashi

    IPC分类号： F04D29/10 ,  F04D29/16 ,  F16J15/447 ,  F04D29/08

    CPC分类号： F04D29/102 ,  F04D29/106 ,  F04D29/162 ,  F04D29/167

    摘要： In a fluid machine such as multistage centrifugal compressor, the pressure of a working fluid is raised with the rotation of a impeller. A shaft sealing device is mounted at the end of the rotary shaft in order to prevent the working gas of the raised pressure from leaking out of the fluid machine and then polluting the surroundings. In a case where the fluid machine operates to rotate at high speed, a labyrinth sealing device is employed for the purpose of reducing a frictional loss in the shaft sealing device. The labyrinth sealing device includes a plurality of stages of labyrinth fins which are formed on a casing or the rotary shaft, and a layer of abradable coating to-be-bitten which is formed in the surface part of the rotary shaft or the casing opposing to the labyrinth fins. The clearances between the labyrinth fins and the rotary shaft or the casing are made narrower on the low-pressure side of the labyrinth sealing device than on the high-pressure side thereof. Thus, the fluid machine is run with the minimum clearance. Moreover, even when the coating layer has been lost in contacting the labyrinth fin or by peeling off, the labyrinth fin on the low-pressure side acts as a labyrinth seal.

    摘要翻译： 在诸如多级离心压缩机的流体机器中，随着叶轮的旋转，工作流体的压力升高。 轴密封装置安装在旋转轴的端部，以防止升高的压力的工作气体从流体机器泄漏，然后污染周围环境。 在流体机械高速旋转的情况下，为了减少轴封装置的摩擦损失，采用迷宫式密封装置。 迷宫式密封装置包括形成在壳体或旋转轴上的多级迷宫式散热片和形成在旋转轴的表面部分或与壳体相对的壳体上的可磨损涂层层 迷宫鳍。 迷宫式散热片与旋转轴或壳体之间的间隙在迷宫型密封装置的低压侧比在其高压侧更窄。 因此，流体机器以最小间隙运行。 此外，即使当涂层在迷宫式翅片接触或者剥离时已经失去了，低压侧的迷宫式翼片也作为迷宫式密封。

    Labyrinth sealing device, and fluid machine providing the same
    9.
    发明授权
    Labyrinth sealing device, and fluid machine providing the same 失效
    迷宫式密封装置，以及提供相同的流体机械

    公开(公告)号：US06435822B1

    公开(公告)日：2002-08-20

    申请号：US09864148

    申请日：2001-05-25

    申请人： Hiromi Kobayashi ,  Hideo Nishida ,  Haruo Miura ,  Takashi Eino ,  Kazuki Takahashi

    发明人： Hiromi Kobayashi ,  Hideo Nishida ,  Haruo Miura ,  Takashi Eino ,  Kazuki Takahashi

    IPC分类号： F04D2908

    CPC分类号： F04D29/102 ,  F04D29/106 ,  F04D29/162 ,  F04D29/167

    摘要： In a fluid machine such as multistage centrifugal compressor, the pressure of a working fluid is raised with the rotation of a impeller. A shaft sealing device is mounted at the end of the rotary shaft in order to prevent the working gas of the raised pressure from leaking out of the fluid machine and then polluting the surroundings. In a case where the fluid machine operates to rotate at high speed, a labyrinth sealing device is employed for the purpose of reducing a frictional loss in the shaft sealing device. The labyrinth sealing device includes a plurality of stages of labyrinth fins which are formed on a casing or the rotary shaft, and a layer of abradable coating to-be-bitten which is formed in the surface part of the rotary shaft or the casing opposing to the labyrinth fins. The clearances between the labyrinth fins and the rotary shaft or the casing are made narrower on the low-pressure side of the labyrinth sealing device than on the high-pressure side thereof. Thus, the fluid machine is run with the minimum clearance. Moreover, even when the coating layer has been lost in touch with the labyrinth fin or by peeling off, the labyrinth fin on the low-pressure side acts as a labyrinth seal.

    摘要翻译： 在诸如多级离心压缩机的流体机器中，随着叶轮的旋转，工作流体的压力升高。 轴密封装置安装在旋转轴的端部，以防止升高的压力的工作气体从流体机器泄漏，然后污染周围环境。 在流体机械高速旋转的情况下，为了减少轴封装置的摩擦损失，采用迷宫式密封装置。 迷宫式密封装置包括形成在壳体或旋转轴上的多级迷宫式散热片和形成在旋转轴的表面部分或与壳体相对的壳体上的可磨损涂层层 迷宫鳍。 迷宫式散热片与旋转轴或壳体之间的间隙在迷宫型密封装置的低压侧比在其高压侧更窄。 因此，流体机器以最小间隙运行。 此外，即使当涂层与迷宫式翅片相接触或剥离时，低压侧的迷宫式翼片也作为迷宫式密封件。

    Labyrinth sealing device, and fluid machine providing the same
    10.
    发明授权
    Labyrinth sealing device, and fluid machine providing the same 失效
    迷宫式密封装置，以及提供相同的流体机械

    公开(公告)号：US06302645B1

    公开(公告)日：2001-10-16

    申请号：US09505191

    申请日：2000-02-16

    申请人： Hiromi Kobayashi ,  Hideo Nishida ,  Haruo Miura ,  Takashi Eino ,  Kazuki Takahashi

    发明人： Hiromi Kobayashi ,  Hideo Nishida ,  Haruo Miura ,  Takashi Eino ,  Kazuki Takahashi

    IPC分类号： F04D2908

    CPC分类号： F04D29/102 ,  F04D29/106 ,  F04D29/162 ,  F04D29/167

    摘要： In a fluid machine such as multistage centrifugal compressor, the pressure of a working fluid is raised with the rotation of a impeller. A shaft sealing device is mounted at the end of the rotary shaft in order to prevent the working gas of the raised pressure from leaking out of the fluid machine and then polluting the surroundings. In a case where the fluid machine operates to rotate at high speed, a labyrinth sealing device is employed for the purpose of reducing a frictional loss in the shaft sealing device. The labyrinth sealing device includes a plurality of stages of labyrinth fins which are formed on a casing or the rotary shaft, and a layer of abradable coating to-be-bitten which is formed in the surface part of the rotary shaft or the casing opposing to the labyrinth fins. The clearances between the labyrinth fins and the rotary shaft or the casing are made narrower on the low-pressure side of the labyrinth sealing device than on the high-pressure side thereof. Thus, the fluid machine is run with the minimum clearance. Moreover, even when the coating layer has been lost in touch with the labyrinth fin or by peeling off, the labyrinth fin on the low-pressure side acts as a labyrinth seal.

    摘要翻译： 在诸如多级离心压缩机的流体机器中，随着叶轮的旋转，工作流体的压力升高。 轴密封装置安装在旋转轴的端部，以防止升高的压力的工作气体从流体机器泄漏，然后污染周围环境。 在流体机械高速旋转的情况下，为了减少轴封装置的摩擦损失，采用迷宫式密封装置。 迷宫式密封装置包括形成在壳体或旋转轴上的多级迷宫式散热片和形成在旋转轴的表面部分或与壳体相对的壳体上的可磨损涂层层 迷宫鳍。 迷宫式散热片与旋转轴或壳体之间的间隙在迷宫型密封装置的低压侧比在其高压侧更窄。 因此，流体机器以最小间隙运行。 此外，即使当涂层与迷宫式翅片相接触或剥离时，低压侧的迷宫式翼片也作为迷宫式密封件。