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公开(公告)号：US5913248A
公开(公告)日：1999-06-15
申请号：US896839
申请日：1997-07-18
申请人： Hideomi Harada , Shin Konomi , Kazuo Takei
发明人： Hideomi Harada , Shin Konomi , Kazuo Takei
CPC分类号： F04D29/462 , F04D27/001 , F04D27/02
摘要： A turbomachine having variable-angle diffuser vanes operates by regulating the angle of the diffuser vanes on the basis of the sensors disposed on the pump body or pipes of a surge detection device. The onset of surge can be forecast by measuring the fluctuations in the operating parameter(s) over a measuring interval of time computed on the basis of the operating characteristics of the impeller of the turbomachine. The onset of surge is prevented by adjusting the angle of the diffuser vanes in accordance with the sampling duration for parameter fluctuations over the measuring interval of time, and by adjusting the diffuser vanes to maintain the operating parameter fluctuations of the fluid machinery below a threshold value of the turbomachine derived from the design flow rate of the turbomachine. Application of the surge detection device in combination with fluid flow guide vanes and blades of the turbomachine enables full utilization of the potential capability of the turbomachine.
摘要翻译： 具有可变角度扩散器叶片的涡轮机通过基于布置在泵体上的传感器或浪涌检测装置的管道来调节扩散器叶片的角度来进行操作。 可以通过在基于涡轮机的叶轮的操作特性计算的测量间隔中测量操作参数的波动来预测喘振的开始。 通过根据在测量时间间隔上的参数波动的采样持续时间来调节扩散器叶片的角度并且通过调节扩散器叶片以将流体机械的操作参数波动保持在阈值以下来防止喘振的开始 的涡轮机从涡轮机的设计流量得出。 浪涌检测装置与涡轮机的流体导流叶片和叶片的组合的应用使得能够充分利用涡轮机的潜在能力。
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公开(公告)号：US5683223A
公开(公告)日：1997-11-04
申请号：US471317
申请日：1995-05-19
申请人： Hideomi Harada , Shin Konomi , Kazuo Takei
发明人： Hideomi Harada , Shin Konomi , Kazuo Takei
CPC分类号： F04D29/462 , F04D27/001 , F04D27/02
摘要： A turbomachine having variable-angle diffuser vanes operates by regulating the angle of the diffuser vanes on the basis of the sensors disposed on the pump body or pipes of a surge detection device. The onset of surge can be forecast by measuring the fluctuations in the operating parameter(s) over a measuring interval of time computed on the basis of the operating characteristics of the impeller of the turbomachine. The onset of surge is prevented by adjusting the angle of the diffuser vanes in accordance with the sampling duration for parameter fluctuations over the measuring interval of time, and by adjusting the diffuser vanes to maintain the operating parameter fluctuations of the fluid machinery below a threshold value of the turbomachine derived from the design flow rate of the turbomachine. Application of the surge detection device in combination with fluid flow guide vanes and blades of the turbomachine enables full utilization of the potential capability of the turbomachine.
摘要翻译： 具有可变角度扩散器叶片的涡轮机通过基于布置在泵体上的传感器或浪涌检测装置的管道来调节扩散器叶片的角度来进行操作。 可以通过在基于涡轮机的叶轮的操作特性计算的测量间隔中测量操作参数的波动来预测喘振的开始。 通过根据在测量时间间隔上的参数波动的采样持续时间来调节扩散器叶片的角度并且通过调节扩散器叶片以将流体机械的操作参数波动保持在阈值以下来防止喘振的开始 的涡轮机从涡轮机的设计流量得出。 浪涌检测装置与涡轮机的流体导流叶片和叶片的组合的应用使得能够充分利用涡轮机的潜在能力。
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公开(公告)号：US06347921B1
公开(公告)日：2002-02-19
申请号：US09542869
申请日：2000-04-04
申请人： Hiroyoshi Watanabe , Shin Konomi , Hideomi Harada , Iciro Ariga
发明人： Hiroyoshi Watanabe , Shin Konomi , Hideomi Harada , Iciro Ariga
IPC分类号： F01D106
CPC分类号： F01D17/143 , F01D1/06
摘要： A centrifugal or mixed flow type turbomachine, of a vaneless diffuser type can operate stably at low flow rates below the design flow rate, by preventing the initiation of flow instability in the system. The turbomachine comprises two stabilization members disposed in two predetermined locations of the diffuser section which prevents a generation of unstable flow in the diffuser section during a low flow rate operation and reduction of head coefficient in the turbomachine.
摘要翻译： 无叶型扩散器类型的离心式或混流式涡轮机可以通过防止系统中流动不稳定性的开始而以低于设计流量的低流量运行。 涡轮机包括设置在扩散器部分的两个预定位置中的两个稳定部件，其防止在低流量操作期间在扩散器部分中产生不稳定的流动并降低涡轮机中的头部系数。
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公开(公告)号：US06338610B1
公开(公告)日：2002-01-15
申请号：US09600237
申请日：2000-07-13
申请人： Hideomi Harada , Shin Konomi
发明人： Hideomi Harada , Shin Konomi
IPC分类号： F04D2938
CPC分类号： F04D29/2255 , F04D29/24 , F04D29/30
摘要： The present invention provides a centrifugal turbomachinery having a good performance which can effectively reduce the secondary flow in the flow passage of the impeller and minimize the loss caused by the secondary flow without an excessive increase in manufacturing cost. An impeller has a plurality of blades (3) between an inlet (6a) at a central portion and an exit (6b) at a peripheral portion, and a flow passage formed between the blades for delivering fluid from the impeller inlet to the impeller exit by rotation the impeller. The blade (3) is leaned toward a circumferential direction so that the blade at the hub side (2) precedes the blade at the shroud side (4) in a rotational direction of the impeller. A blade lean angle, defined as an angle between the blade and a surface perpendicular to a hub surface as viewed from the direction of the exit, shows a decreasing tendency from the inlet to the exit. A blade centerline at the hub side and a blade centerline at the shroud side as viewed from the front direction at the inlet intersect at a point where non-dimensional radius location, defined as a ratio of the radius of the intersection to the radius of the impeller exit, ranges from 0.8 to 0.95.
摘要翻译： 本发明提供一种具有良好性能的离心式涡轮机械，其能够有效地减少叶轮的流路中的二次流动，并且使二次流动造成的损失最小化，而不会过度增加制造成本。 叶轮具有在中心部分的入口（6a）和周边部分的出口（6b）之间的多个叶片（3）和形成在叶片之间的流动通道，用于将流体从叶轮入口输送到叶轮出口 通过旋转叶轮。 叶片（3）朝向圆周方向倾斜，使得轮毂侧（2）处的叶片在叶轮的旋转方向处在护罩侧（4）处的叶片之前。 从出口方向观察时，被定义为叶片与垂直于轮毂表面的表面之间的角度的叶片倾斜角度表现出从入口到出口的减小趋势。 轮毂侧的叶片中心线和在入口处从前方观察的护罩侧的叶片中心线在无量纲半径位置处的点处相交，所述点的尺寸半径位置被定义为交点的半径与半径的比率 叶轮出口的范围为0.8至0.95。
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公开(公告)号：US06155779A
公开(公告)日：2000-12-05
申请号：US167722
申请日：1998-10-07
申请人： Hiroyoshi Watanabe , Shin Konomi , Hideomi Harada , Ichiro Ariga
发明人： Hiroyoshi Watanabe , Shin Konomi , Hideomi Harada , Ichiro Ariga
CPC分类号： F04D29/44 , F04D29/462 , F05D2250/52
摘要： A centrifugal or mixed flow type turbomachine, of a diffuser type can operate stably at low flow rates below the design flow rate, by preventing the initiation of flow instability in the system. The turbomachine comprises a stabilization member disposed in a predetermined location of the diffuser section which prevents a generation of unstable flow in the diffuser section during a low flow rate operation.
摘要翻译： 扩散型的离心式或混流式涡轮机可以通过防止系统中流动不稳定性的开始而以低于设计流量的低流量稳定运行。 涡轮机包括设置在扩散器部分的预定位置的稳定部件，其防止在低流量操作期间在扩散器部分中产生不稳定的流动。
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