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

IPC分类号： F04D29/44 ,  F04D29/46 ,  F04D29/68 ,  F01D1/06

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。

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。

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

IPC分类号： F04D27/02 ,  F04D29/46 ,  G01F1/38 ,  G01L3/00

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。

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。

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

IPC分类号： F04D27/02 ,  F04D29/46 ,  F01D17/00

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。

公开(公告)号：US06491493B1

公开(公告)日：2002-12-10

申请号：US09719398

申请日：2001-02-01

申请人： Hiroyoshi Watanabe ,  Hideomi Harada

发明人： Hiroyoshi Watanabe ,  Hideomi Harada

IPC分类号： F01D514

CPC分类号： F01D5/145

摘要： A turbine nozzle comprises an array of nozzle blades (1) U disposed circumferentially in an annular passage (4) defined between inner and outer rings of a diaphragm and fixed to the inner and outer rings of the turbine diaphragm. The flow passage is defined between a pressure surface (F) and a suction surface (B) of adjacent ones of the nozzle blades, and a cross section of the flow passage includes predetermined ranges extending along a blade height (h) from the inner and outer diameter surfaces (hub and tip end walls) and defined by a curved line, and another range defined by a substantially straight line.

摘要翻译： 涡轮喷嘴包括在隔膜的内环和外环之间限定的环形通道（4）周向设置的一组喷嘴叶片（1），并固定到涡轮隔膜的内环和外环。 流动通道限定在相邻喷嘴叶片的压力表面（F）和吸力表面（B）之间，并且流动通道的横截面包括沿着从内部的叶片高度（h）延伸的预定范围， 外径表面（轮毂和尖端端壁）并由曲线限定，另一范围由基本上直线限定。

公开(公告)号：US06431829B1

公开(公告)日：2002-08-13

申请号：US09587554

申请日：2000-06-05

申请人： Hiroyoshi Watanabe ,  Hideomi Harada

发明人： Hiroyoshi Watanabe ,  Hideomi Harada

IPC分类号： F04D2944

CPC分类号： F01D5/141

摘要： A turbine device includes a rotor having a plurality of turbine blades disposed between an inner-diameter surface and an outer-diameter surface. The turbine blades are of a front or intermediate loaded type near the inner-diameter surface and of a rear loaded type near the outer-diameter surface.

摘要翻译： 涡轮装置包括具有设置在内径表面和外径表面之间的多个涡轮叶片的转子。 涡轮机叶片在靠近外径表面的内径表面和后加载型附近具有正面或中间负载型。

公开(公告)号：US5873696A

公开(公告)日：1999-02-23

申请号：US906436

申请日：1997-08-05

申请人： Hideomi Harada ,  Shunro Nishiwaki ,  Kazuo Takei

发明人： Hideomi Harada ,  Shunro Nishiwaki ,  Kazuo Takei

IPC分类号： F04D1/00 ,  F04D27/02 ,  F04D29/46 ,  F01D17/16

CPC分类号： F04D29/466 ,  F04D27/002 ,  F04D27/0246 ,  F04D29/462

摘要： A turbomachine having variable angle diffuser vanes wed with a centrifugal pump. The performance of a diffuser is greatly enhanced by the use of adjustable angle diffuser vanes which can be set to a wide range of vane angles to provide a variable size of an opening between adjacent vanes. The demonstrated pumping system has a significantly wider operating range than that in conventional pumping systems over a wide flow rate, and is particularly effective in the low flow rate range in which known diffuser vane arrangements would lead to surge in the entire system and other serious operational problems.

摘要翻译： 具有可变角度扩散器叶片的涡轮机与离心泵结合。 扩散器的性能通过使用可调节的角度扩散器叶片大大增强，其可以设置在宽范围的叶片角度上，以提供相邻叶片之间的开口的可变尺寸。 所示出的泵送系统具有比在常规泵送系统中更宽的流量范围内的显着更宽的操作范围，并且在已知的扩散器叶片装置将导致整个系统的浪涌和其他严重操作的低流量范围内特别有效 问题。

公开(公告)号：US5417547A

公开(公告)日：1995-05-23

申请号：US170761

申请日：1993-12-21

申请人： Hideomi Harada

发明人： Hideomi Harada

IPC分类号： F04D29/44

CPC分类号： F04D29/448 ,  F04D29/444 ,  F05D2250/52

摘要： A vaned diffuser for centrifugal and mixed flow pumps which has vanes in two rows radially displaced from each other, wherein the vanes are arranged in an optimal positional relationship to each other to improve the diffuser performance with the total pressure loss coefficient and the static pressure recovery coefficient. The vaned diffuser includes vanes arranged in a fluid flow field defined at the outer periphery of an impeller of a centrifugal or mixed flow pump. The vanes are circumferentially arranged in two rows, that is, a first row and a second row, which are equal in number of vanes and radially displaced from each other such that the respective chords of each pair of adjacent vanes in the first and second rows are approximately parallel to each other, and the trailing edges of the vanes in the first row and the leading edges of the vanes in the second row are radially spaced from each other at a distance .DELTA.R=0.05 L to 0.4 L, where L is the chord length of the vanes in the first row.

摘要翻译： 一种用于离心和混合流动泵的叶片扩散器，其具有彼此径向偏移的两排叶片，其中叶片彼此以最佳位置关系布置，以改善扩散器性能，同时总压力损失系数和静态压力恢复 系数。 叶片式扩散器包括设置在离心式或混流式泵的叶轮的外周界限定的流体流场中的叶片。 叶片周向地布置成两排，即第一排和第二排，其在叶片数量上相等并且彼此径向偏移，使得第一和第二排中每对相邻叶片的各自的和弦 大致彼此平行，并且第一排中的叶片的后缘和第二排中的叶片的前缘在距离DELTA R = 0.05L至0.4L处彼此径向间隔开，其中L为 第一排叶片的弦长。

公开(公告)号：US5851103A

公开(公告)日：1998-12-22

申请号：US755475

申请日：1996-11-22

申请人： Hideomi Harada ,  Kazuo Takei

发明人： Hideomi Harada ,  Kazuo Takei

IPC分类号： F04D27/02 ,  F04D29/46

CPC分类号： F04D29/466 ,  F04D27/002 ,  F04D27/0246 ,  F04D29/462

摘要： A turbomachinery is presented to provide stable operation at fluid flow rates much lower than the design flow rate without introducing surge in the device. This is achieved by providing a diffuser with variable angle vanes. The vane angle at low flow rates is adjusted so as to minimize the diffuser loss of the exiting fluid stream from the impeller. Since the flow angle of the exit flow of the impeller is a function only of the non-dimensional flow rates, and does not depend on the flow angle at the inlet the impeller, therefore, the vane angles can be regulated to achieve a stable operation of the impeller without producing surge of the turbomachinery at flow rates lower than the design flow rate. To optimize the performance of the turbomachinery, in addition to the variable angle vanes, an inlet guide vane having variable vane angle is provided so that the turbomachinery can be operated at the required flow rate and head pressure. The concept is demonstrated in a turbomachinery provided with variable diffuser vanes and an inlet guide vane.

摘要翻译： 提供了一种涡轮机构，以便在流体流动速率比设计流速低得多的情况下提供稳定的操作，而不会在设备中引入浪涌。 这通过提供具有可变角度叶片的扩散器来实现。 调节低流速下的叶片角度，以使来自叶轮的离开的流体流的扩散器损失最小化。 由于叶轮的排出流的流角仅与无量纲的流量有关，并且不依赖于叶轮入口处的流角，因此可以调节叶片角度以实现稳定的操作 的叶轮，而不会以低于设计流速的流速产生涡轮机械的浪涌。 为了优化涡轮机械的性能，除了可变角度叶片之外，还提供具有可变叶片角度的入口导向叶片，使得涡轮机械可以以所需的流量和压头运行。 该概念在具有可变扩散器叶片和入口引导叶片的涡轮机中得以证明。