公开(公告)号：US08313290B2

公开(公告)日：2012-11-20

申请号：US12488910

申请日：2009-06-22

申请人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

发明人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

IPC分类号： F04D29/44

CPC分类号： F04D29/441

摘要： In a high pressure centrifugal compressor, the occurrence of rotating stall noticeable in a comparatively-low specific speed wheel stage is prevented, thereby high efficient fluid performance is obtained and reliability is improved. The centrifugal compressor has a first vaneless diffuser with a constant flow channel height on the downstream side of an impeller, and a second vaneless diffuser in which the flow channel height decreases in a flow direction from an inlet to an outlet on the downstream side of the first vaneless diffuser. These diffusers are combined with an impeller using thick blades.

摘要翻译： 在高压离心式压缩机中，防止了在比较低的特定速度车轮台处显示的转动失速的发生，从而获得了高效率的流体性能，并提高了可靠性。 离心压缩机具有在叶轮的下游侧具有恒定的流动通道高度的第一无叶漫射器和第二无叶漫射器，其中流动通道高度在流动方向上从入口到下游侧的出口减小 第一个无叶漫射器。 这些扩散器与使用厚叶片的叶轮组合。

公开(公告)号：US08267644B2

公开(公告)日：2012-09-18

申请号：US12511743

申请日：2009-07-29

申请人： Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tetsuya Kuwano ,  Toshio Itou ,  Takanori Shibata ,  Manabu Yagi

发明人： Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tetsuya Kuwano ,  Toshio Itou ,  Takanori Shibata ,  Manabu Yagi

IPC分类号： F04D29/44

CPC分类号： F04D17/122 ,  F04D29/441 ,  F04D29/444

摘要： In a multistage centrifugal compressor, a plurality of impellers is attached to the same rotary shaft. Vaned Diffusers and vaneless diffusers are used, as diffusers, for respective compressor stages configuring the compressor. The vaned diffusers are continuously used from the first compressor stage to the middle compressor stage, and the vaneless diffusers are used for the last compressor stage and the previous stage. While high efficiency is maintained at the compressor stages having the vaned diffusers, an operating flow range is secured at the compressor stages having the vaneless diffusers.

摘要翻译： 在多级离心式压缩机中，多个叶轮连接在同一个旋转轴上。 对于构成压缩机的各个压缩机级，使用Vaned扩散器和无叶扩散器作为扩散器。 从第一压缩机阶段到中间压缩机阶段连续使用有叶扩散器，无级扩散器用于最后一个压缩机级和前一级。 在具有带叶片的扩散器的压缩机级保持高效率的情况下，在具有无叶漫射器的压缩机级确保工作流量范围。

公开(公告)号：US20090317248A1

公开(公告)日：2009-12-24

申请号：US12488910

申请日：2009-06-22

申请人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

发明人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

IPC分类号： F04D29/44

CPC分类号： F04D29/441

摘要： In a high pressure centrifugal compressor, the occurrence of rotating stall noticeable in a comparatively-low specific speed wheel stage is prevented, thereby high efficient fluid performance is obtained and reliability is improved. The centrifugal compressor has a first vaneless diffuser with a constant flow channel height on the downstream side of an impeller, and a second vaneless diffuser in which the flow channel height decreases in a flow direction from an inlet to an outlet on the downstream side of the first vaneless diffuser. These diffusers are combined with an impeller using thick blades.

摘要翻译： 在高压离心式压缩机中，防止了在比较低的特定速度车轮台处显示的转动失速的发生，从而获得了高效率的流体性能，并提高了可靠性。 离心压缩机具有在叶轮的下游侧具有恒定的流动通道高度的第一无叶漫射器和第二无叶漫射器，其中流动通道高度在流动方向上从入口到下游侧的出口减小 第一个无叶漫射器。 这些扩散器与使用厚叶片的叶轮组合。

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。

公开(公告)号：US08616843B2

公开(公告)日：2013-12-31

申请号：US12907126

申请日：2010-10-19

申请人： Takanori Shibata ,  Manabu Yagi ,  Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka

发明人： Takanori Shibata ,  Manabu Yagi ,  Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka

IPC分类号： F04D29/44

CPC分类号： F04D29/444 ,  F04D17/12 ,  F04D29/681 ,  F05D2250/52

摘要： Turbo machinery comprising an impeller and a diffuser positioned on a downstream side of the impeller that a channel wall surface of the diffuser is composed of a pair of a shroud side diffuser plate and a hub side diffuser plate which surface each other and a channel width is formed so as to be increased downstream, characterized in that guide vanes in a circular arc shape lower in height than the channel width are installed in a line of a plurality of vanes on both channel walls of the shroud side diffuser plate and hub side diffuser plate of the diffuser, and a total of vane heights of the two guide vanes at an outlet of the diffuser is set so as to be within a range from 30 to 70% of the channel width at the outlet of the diffuser.

摘要翻译： 涡轮机械包括叶轮和位于叶轮下游侧的扩散器，扩散器的通道壁表面由一对彼此面对并且沟道宽度的护罩侧扩散板和轮毂侧扩散板组成， 形成为向下游侧增加，其特征在于，在所述护罩侧扩散板和轮毂侧扩散板的两个通道壁上的多个叶片的一条线上安装有高于沟道宽度的圆弧形状的导向叶片 的扩散器的出口处的两个导向叶片的叶片高度的总和被设定为在扩散器的出口处的通道宽度的30至70％的范围内。

公开(公告)号：US08475131B2

公开(公告)日：2013-07-02

申请号：US12623089

申请日：2009-11-20

申请人： Takanori Shibata ,  Manabu Yagi ,  Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tetsuya Kuwano

发明人： Takanori Shibata ,  Manabu Yagi ,  Hideo Nishida ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tetsuya Kuwano

IPC分类号： F04D29/38

CPC分类号： F04D29/284 ,  F04D29/30 ,  Y10T29/49329

摘要： A centrifugal compressor provided with an impeller which is configured to have a plurality of blades arranged at a predetermined interval in a circumferential direction of a hub rotating together with a rotation shaft, in which a blade angle on a shroud side of the blade distributes to have a minimum value at a position between a leading edge of the blade and a midpoint of a camber line on the shroud side, and a maximum value at a position between the midpoint of the camber line on the shroud side and a trailing edge of the blade, and a blade angle of the blade on a hub side distributes so as to have a maximum value at a position between a leading edge and a midpoint of a camber line on the hub side.

摘要翻译： 一种设置有叶轮的离心式压缩机，其被构造成具有在与旋转轴一起旋转的轮毂的圆周方向上以预定间隔布置的多个叶片，叶片的护罩侧的叶片角度分布在其中， 在叶片的前缘和护罩侧的外倾线的中点之间的位置处的最小值以及护罩侧的外倾线的中点与叶片的后缘之间的位置处的最大值 并且轮毂侧上的叶片的叶片角度分布成在轮毂侧的倾斜线的前缘和中点之间的位置处具有最大值。

公开(公告)号：US20120263599A1

公开(公告)日：2012-10-18

申请号：US13437958

申请日：2012-04-03

申请人： Kazuyuki SUGIMURA ,  Hideo Nishida ,  Hiromi Kobayashi ,  Toshio Ito

发明人： Kazuyuki SUGIMURA ,  Hideo Nishida ,  Hiromi Kobayashi ,  Toshio Ito

IPC分类号： F01D5/14 ,  F01D5/02

CPC分类号： F04D29/284 ,  F04D29/30

摘要： An impeller includes a hub plate and a plurality of blades circumferentially disposed at intervals on one surface side of the hub plate. Each blade has a shape formed by piling up a plurality of blade sections in a blade height-wise direction of each blade in a reference impeller in which the hub plate intersects with the blades and which includes a linear element blade in the blade height-wise direction so as to form a curvilinear element blade. In piling up the blade sections, amounts of tangential lean and sweep to be applied to the blade sections are increased as it goes from an end face of at least one of a hub plate side end and a counter hub plate side end toward a span intermediate part of the blade.

摘要翻译： 叶轮包括轮毂板和在毂板的一个表面侧上周向间隔设置的多个叶片。 每个叶片具有通过在参考叶轮中的每个叶片的叶片高度方向上堆叠多个叶片部分而形成的形状，其中轮毂板与叶片相交，并且其包括叶片高度方向上的线性元件叶片 以形成曲线元件叶片。 在堆叠叶片部分时，施加到叶片部分的切向倾斜和扫掠的量随着从毂板侧端部和对置毂板侧端部朝向跨度中间线中的至少一个的端面而增加 部分刀片。

公开(公告)号：US20100028141A1

公开(公告)日：2010-02-04

申请号：US12511743

申请日：2009-07-29

申请人： Hideo NISHIDA ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tetsuya Kuwano ,  Toshio Itou ,  Takanori Shibata ,  Manabu Yagi

发明人： Hideo NISHIDA ,  Hiromi Kobayashi ,  Masanori Tanaka ,  Tetsuya Kuwano ,  Toshio Itou ,  Takanori Shibata ,  Manabu Yagi

IPC分类号： F04D29/44

CPC分类号： F04D17/122 ,  F04D29/441 ,  F04D29/444

摘要： In a multistage centrifugal compressor, a plurality of impellers is attached to the same rotary shaft. Vaned Diffusers and vaneless diffusers are used, as diffusers, for respective compressor stages configuring the compressor. The vaned diffusers are continuously used from the first compressor stage to the middle compressor stage, and the vaneless diffusers are used for the last compressor stage and the previous stage. While high efficiency is maintained at the compressor stages having the vaned diffusers, an operating flow range is secured at the compressor stages having the vaneless diffusers.

摘要翻译： 在多级离心式压缩机中，多个叶轮连接在同一个旋转轴上。 对于构成压缩机的各个压缩机级，使用Vaned扩散器和无叶扩散器作为扩散器。 从第一压缩机阶段到中间压缩机阶段连续使用有叶扩散器，无级扩散器用于最后一个压缩机级和前一级。 在具有带叶片的扩散器的压缩机级保持高效率的情况下，在具有无叶漫射器的压缩机级确保工作流量范围。

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。

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。