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公开(公告)号：US5545014A
公开(公告)日：1996-08-13
申请号：US114253
申请日：1993-08-30
CPC分类号： F04C14/226 , F01C21/0863 , F04C2/3441
摘要： A durable, single action, variable displacement vane pump capable of undervane pumping, components thereof, and pressure balancing method. The pump comprises a cylindrical barstock rotor member having large diameter journal ends and central vane slots uniformly spaced therearound. The vane slots are elongate and have a central vane-supporting portion of maximum depth surrounded at each end by extension portions having depths which decrease axially to the surface of rotor member. The vaned rotor is rotatably supported within a unitary cam member having opposed faces and a circular bore therethrough forming a cam chamber having a continuous interior circular cam surface. The vane slot extensions in the rotor project outwardly beyond the cam chamber. An opposed pair of manifold bearings rotatably support the journal ends of the rotor and overlap the vane slot extensions to admit fluid to expanding vane bucket areas of the rotating vaned rotor and also into the vane slot extensions and undervane areas for pressure balancing purposes. Fluid passages and pressures within the pump are arranged to balance forces acting on various parts to reduce stress, improve sealing, and permit sharing of a fluid pressure source.
摘要翻译： 一种耐用，单作用，能够进行底盘泵送的可变排量叶片泵，其部件和压力平衡方法。 泵包括具有大直径轴颈末端和在其周围均匀间隔的中心叶片槽的圆柱形棒料转子件。 叶片槽是细长的并且具有最大深度的中心叶片支撑部分，每个端部具有通过延伸部分的延伸部分，所述延伸部分的深度与转子部件的表面轴向减小。 叶片式转子可旋转地支撑在具有相对面的整体凸轮构件中，并且圆形孔穿过其形成具有连续内部圆形凸轮表面的凸轮室。 转子中的叶片槽延伸部向外突出超出凸轮室。 相对的一对歧管轴承可旋转地支撑转子的轴颈端并与叶片槽延伸部重叠，以将流体接纳到旋转的叶片转子的扩展叶片铲斗区域，并且还可以进入叶片槽延伸部和底座区域以用于压力平衡目的。 泵内的流体通道和压力被布置成平衡作用在各个部件上的力以减少应力，改善密封并允许流体压力源共享。
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公开(公告)号：US5863189A
公开(公告)日：1999-01-26
申请号：US500297
申请日：1995-07-10
CPC分类号： F04C14/223
摘要： Variable-displacement, single-acting vane pumps in which the cylindrical cam member is adjustably supported within an outer annular cam housing to enable the cam member to be adjustably-rotated relative to the housing to adjust the geometric center of the cam chamber relative to the center of the rotor member and thereby adjust the displacement capacity of the pump between zero-flow maximum flow values. The annular housing for the cam member comprises a roller bearing assembly between its inner race surface and the cylindrical outer surface of the cam member, which minimizes the friction when the cam member is rotated during adjustment and enables the adjustment to be actuated remotely, such as by means of a small motor gear assembly.
摘要翻译： 可变排量单作用叶片泵，其中圆柱形凸轮构件可调节地支撑在外部环形凸轮壳体内，以使得凸轮构件能够相对于壳体可调节地旋转，以调节凸轮腔室的几何中心相对于 从而在零流量最大流量值之间调节泵的排量。 用于凸轮构件的环形壳体包括在其内座圈表面和凸轮构件的圆柱形外表面之间的滚子轴承组件，当在调节期间凸轮构件旋转时使摩擦最小化，并且能够远程地致动调节，例如 通过小型电机齿轮组件。
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公开(公告)号：US5716201A
公开(公告)日：1998-02-10
申请号：US509399
申请日：1995-07-31
申请人： Robert Peck , Martin Thomas Books , Francis Tokarski , Bernard J. Bisson , Raymond D. Zagranski , Mihir C. Desai
发明人： Robert Peck , Martin Thomas Books , Francis Tokarski , Bernard J. Bisson , Raymond D. Zagranski , Mihir C. Desai
CPC分类号： F02M37/045 , F01C21/0863 , F04C2/3442
摘要： A variable displacement vane pump having a vaned rotor adjustably contained within a cam member for rotation between fuel inlet and fuel discharge arcs. Adjacent vanes form enclosed fuel bucket areas which are expanded and axially-supplied with fuel in the fuel inlet arc and are contracted and axially-discharge the fuel in the fuel discharge arc. Fuel circulation is improved by providing a central recess at each vane tip and/or a central groove in the cam surface to prevent trapping, stagnation and overheating of fuel at the centerpoints of the bucket areas, which overheating can result in expansion of the vane tips, scoring of the cam surface and pump failure.
摘要翻译： 可变排量叶片泵，其具有可转动地容纳在凸轮构件内的用于在燃料入口和燃料排出弧之间旋转的叶片转子。 相邻的叶片形成封闭的燃料斗区域，其在燃料入口弧中膨胀并且轴向供应燃料并且在燃料排放电弧中收缩并轴向排出燃料。 通过在每个叶片尖端处设置中心凹槽和/或凸轮表面中的中心凹槽来改善燃料循环，以防止在铲斗区域的中心点处的燃料的捕获，停滞和过热，过热可导致叶片尖端 ，凸轮表面的刻痕和泵的故障。
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公开(公告)号：US08807974B2
公开(公告)日：2014-08-19
申请号：US13602431
申请日：2012-09-04
申请人： Paul J. Paluszewski , Mihir C. Desai , Xingen Dong
发明人： Paul J. Paluszewski , Mihir C. Desai , Xingen Dong
CPC分类号： F04C2/3446 , F04C13/00 , F04C14/26 , F04C15/06 , F04C2220/24
摘要： A split discharge vane pump is disclosed having a pump body that includes an interior pumping chamber having a central axis and defining a continuous peripheral cam surface, the cam surface including four quadrantal cam segments, wherein diametrically opposed cam segments have identical cam profiles, and each cam segment defines an inlet arc, a discharge arc and two seal arcs. A rotor is mounted for axial rotation within the pumping chamber and a plurality of circumferentially spaced apart radially extending vanes are mounted for radial movement within the rotor, wherein the plurality of vanes define an equal number of circumferentially spaced apart buckets which extend between the rotor and the cam surface of the pumping chamber for carrying pressurized fluid.
摘要翻译： 公开了一种分体式排放叶片泵，其具有包括具有中心轴线并限定连续周边凸轮表面的内部泵送室的泵体，所述凸轮表面包括四个四边形凸轮段，其中直径相对的凸轮段具有相同的凸轮轮廓，并且每个 凸轮段限定了入口弧，放电弧和两个密封弧。 安装转子以在泵送室内轴向旋转，并且安装多个周向间隔开的径向延伸的叶片用于在转子内径向移动，其中多个叶片限定相等数量的周向间隔开的叶片，其在转子和 用于承载加压流体的泵送室的凸轮表面。
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公开(公告)号：US08277208B2
公开(公告)日：2012-10-02
申请号：US12456086
申请日：2009-06-11
申请人： Paul J. Paluszewski , Mihir C. Desai , Xingen Dong
发明人： Paul J. Paluszewski , Mihir C. Desai , Xingen Dong
CPC分类号： F04C2/3446 , F04C13/00 , F04C14/26 , F04C15/06 , F04C2220/24
摘要： A split discharge vane pump is disclosed having a pump body that includes an interior pumping chamber having a central axis and defining a continuous peripheral cam surface, the cam surface including four quadrantal cam segments, wherein diametrically opposed cam segments have identical cam profiles, and each cam segment defines an inlet arc, a discharge arc and two seal arcs. A rotor is mounted for axial rotation within the pumping chamber and a plurality of circumferentially spaced apart radially extending vanes are mounted for radial movement within the rotor, wherein the plurality of vanes define an equal number of circumferentially spaced apart buckets which extend between the rotor and the cam surface of the pumping chamber for carrying pressurized fluid.
摘要翻译： 公开了一种分体式排放叶片泵，其具有包括具有中心轴线并限定连续周边凸轮表面的内部泵送室的泵体，所述凸轮表面包括四个四边形凸轮段，其中直径相对的凸轮段具有相同的凸轮轮廓，并且每个 凸轮段限定了入口弧，放电弧和两个密封弧。 安装转子以在泵送室内轴向旋转，并且安装多个周向间隔开的径向延伸的叶片用于在转子内径向移动，其中多个叶片限定相等数量的周向间隔开的叶片，其在转子和 用于承载加压流体的泵送室的凸轮表面。
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公开(公告)号：US07770388B2
公开(公告)日：2010-08-10
申请号：US11667741
申请日：2005-11-15
申请人： Mihir C. Desai
发明人： Mihir C. Desai
IPC分类号： F04B49/06
CPC分类号： F02C7/236 , F02C7/232 , F02C9/30 , F04C2/344 , F04C11/001 , F04C14/02 , F05D2260/85 , Y10T137/86019 , Y10T137/86139 , Y10T137/86171
摘要： A two-stage system for delivering fuel to a gas turbine including a first stage variable pump for serving as a primary source of fuel, a second stage fixed pump for selectively supplementing the variable pump, a bypass valve connected to the fixed pump for loading and unloading the fixed pump and a regulator valve assembly connected to the variable pump and the bypass valve for controlling operation of the variable pump and the bypass valve. Preferably, the two-stage system also includes a control valve connected to the regulator valve assembly for setting a pressure differential across the regulator valve assembly and, thereby, loading and unloading the fixed pump.
摘要翻译： 一种用于将燃料输送到燃气轮机的两级系统，包括用作主要燃料源的第一级可变泵，用于选择性地补充可变泵的第二级固定泵，连接到用于装载的固定泵的旁通阀，以及 卸载固定泵和连接到可变泵和旁通阀的调节阀组件，用于控制可变泵和旁通阀的操作。 优选地，两级系统还包括连接到调节阀组件的控制阀，用于设置调节阀组件上的压力差，从而装载和卸载固定泵。
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公开(公告)号：US20080289338A1
公开(公告)日：2008-11-27
申请号：US11667741
申请日：2005-11-15
申请人： Mihir C. Desai
发明人： Mihir C. Desai
CPC分类号： F02C7/236 , F02C7/232 , F02C9/30 , F04C2/344 , F04C11/001 , F04C14/02 , F05D2260/85 , Y10T137/86019 , Y10T137/86139 , Y10T137/86171
摘要： A two-stage system for delivering fuel to a gas turbine including a first stage variable pump for serving as a primary source of fuel, a second stage fixed pump for selectively supplementing the variable pump, a bypass valve connected to the fixed pump for loading and unloading the fixed pump and a regulator valve assembly connected to the variable pump and the bypass valve for controlling operation of the variable pump and the bypass valve. Preferably, the two-stage system also includes a control valve connected to the regulator valve assembly for setting a pressure differential across the regulator valve assembly and, thereby, loading and unloading the fixed pump.
摘要翻译： 一种用于将燃料输送到燃气轮机的两级系统，包括用作主要燃料源的第一级可变泵，用于选择性地补充可变泵的第二级固定泵，连接到用于装载的固定泵的旁通阀，以及 卸载固定泵和连接到可变泵和旁通阀的调节阀组件，用于控制可变泵和旁通阀的操作。 优选地，两级系统还包括连接到调节阀组件的控制阀，用于设置调节阀组件上的压力差，从而装载和卸载固定泵。
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公开(公告)号：US06729139B2
公开(公告)日：2004-05-04
申请号：US09963180
申请日：2001-09-26
IPC分类号： F02C310
CPC分类号： B64C27/001 , B64C27/14 , B64D31/06 , F02C9/28 , F02C9/56 , F05D2220/329 , F05D2270/02 , F05D2270/052 , G05B5/01
摘要： A power turbine speed control system for a helicopter is disclosed which includes components for generating a power turbine speed signal based upon a demanded rotor speed, a high-order filter for filtering the power turbine speed signal by effectuating a rapid attenuation of main and tail rotor torsional frequencies in the power turbine speed signal without compromising phase at low frequencies, and a governor for providing isochronous power turbine speed and rotor speed control based upon the filtered power turbine speed signal.
摘要翻译： 公开了一种用于直升机的动力涡轮机速度控制系统，其包括用于基于所需转子速度产生动力涡轮转速信号的部件，用于通过实现主转子和尾转子的快速衰减来过滤功率涡轮转速信号的高阶滤波器 功率涡轮转速信号中的扭转频率，而不降低低频下的相位;以及调速器，用于基于滤波的功率涡轮转速信号提供等时动力涡轮速度和转子速度控制。
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公开(公告)号：US06986641B1
公开(公告)日：2006-01-17
申请号：US10614364
申请日：2003-07-07
CPC分类号： B64C27/001 , B64C27/14 , B64D31/06 , F02C9/28 , F02C9/56 , F05D2220/329 , F05D2270/02 , F05D2270/052 , G05B5/01
摘要： A power turbine speed control system for a helicopter is disclosed which includes components for generating a power turbine speed signal based upon a demanded rotor speed, a high-order filter for filtering the power turbine speed signal by effectuating a rapid attenuation of main and tail rotor torsional frequencies in the power turbine speed signal without compromising phase at low frequencies, and a governor for providing isochronous power turbine speed and rotor speed control based upon the filtered power turbine speed signal.
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公开(公告)号：US06241392B1
公开(公告)日：2001-06-05
申请号：US09489747
申请日：2000-01-21
IPC分类号： F16C3206
CPC分类号： F16C33/1075 , F16C32/06
摘要： A bearing for supporting a rotating shaft receiving a transverse load, wherein the bearing supports the shaft along a load line and wherein the bearing is closest to the rotating shaft at a running line. The bearing includes a circumferential inner surface, and a lubricant bay defined in the inner surface. The lubricant bay is axially and circumferentially offset from the load line such that a resulting pressure pad of lubricant within the bay provides a hydrostatic force that forces the running line to a location substantially perpendicular to the load line. Load capabilities of a bearing according to the present disclosure, therefore, are substantially insensitive to shaft bending and do not deteriorate in response to the shaft bending.
摘要翻译： 用于支撑承受横向载荷的旋转轴的轴承，其中所述轴承沿着负载线支撑所述轴，并且其中所述轴承在运行线处最靠近所述旋转轴。 轴承包括周向内表面和限定在内表面中的润滑剂槽。 润滑剂隔间在轴向和周向地偏离负载线，使得在隔间内形成的润滑剂压力垫提供了静水力，其将行进线强制到基本上垂直于负载线的位置。 因此，根据本公开的轴承的负载能力对轴弯曲基本上不敏感，并且不会随着轴弯曲而劣化。
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