公开(公告)号：US4529361A

公开(公告)日：1985-07-16

申请号：US600149

申请日：1984-04-13

申请人： Jack G. Sundberg

发明人： Jack G. Sundberg

IPC分类号： F04B23/10 ,  F04C2/344 ,  F04B23/12

CPC分类号： F04C2/3447 ,  F04B23/103

摘要： A vane pump (2), with undervane pumping capability, has a housing (4,14) within which a cam ring (16) is mounted. The cam ring has a cam surface which defines a pumping cavity and which includes two diametrically opposed inlet arcs (48, 50), two diametrically opposed discharge arcs (38, 40) and seal arcs (56, 58, 60, 62) disposed between the inlet arcs and discharge arcs. A rotor (12), mounted for rotation within the housing, carries a plurality of spokes (22). Mounted upon the spokes for radially outward and inward movement are channel-shaped vanes (28) having arcuate tips (46) for engaging the cam surface. Variable volume chambers (94), which provide undervane pumping, are formed between the radially outer ends of the spokes and the vanes. The variable volume chambers communicate with intervane volumes (93) through grooves (86) on the spokes. The vane tips engage seal arcs along a line of contact (76) selected to insure that the vanes are pressure balanced.

摘要翻译： 具有底部抽吸能力的叶片泵（2）具有安装有凸轮环（16）的壳体（4,14）。 所述凸轮环具有凸轮表面，所述凸轮表面限定泵送腔，并且包括两个直径相对的入口弧（48,50），两个直径相对的排出弧（38,40）和密封弧（56,58,60,62） 入口弧和放电弧。 安装成在壳体内旋转的转子（12）承载着多个辐条（22）。 安装在轮辐上用于径向向外和向内运动是具有用于接合凸轮表面的弓形尖端（46）的通道形叶片（28）。 在轮辐的径向外端和叶片之间形成有提供阴螺纹泵送的可变容积室（94）。 可变容积室通过轮辐上的凹槽（86）与间隙体积（93）连通。 叶片尖端沿着选择用于确保叶片压力平衡的接触线（76）接合密封弧。

公开(公告)号：US4493623A

公开(公告)日：1985-01-15

申请号：US468066

申请日：1983-02-22

申请人： James C. Nelson

发明人： James C. Nelson

IPC分类号： F04C15/00

CPC分类号： F04C15/0061 ,  F04C15/0088

摘要： A drive shaft (26) of a gear type fuel pump (2) forms a driving interconnection between an engine gearbox (4) and a shaft (14) which carries the driving gear (10) of the fuel pump. The drive shaft has a slightly diverging lubricant supply passage (65) which receives lubricant from an oil jet (70) in the engine gearbox and directs the lubricant to the engaged splines (44, 46) at the inboard end of the drive shaft. Lubricant from the area of spline engagement is returned to the gearbox via radial passage (78), annular lubricant return passage (68) and radial passage (80). O-ring seals (82, 84) on the drive shaft, which straddle a drain passage (86) prevent the mixing of the lubricant and the fuel which may envelop an intermediate portion of the drive shaft. Wear of the engaged, oil lubricated splines (40, 42) at the outboard end of the drive shaft should provide a general indication of spline wear at the inboard end of the drive shaft because both ends are exposed to similar lubrication.

摘要翻译： 齿轮式燃料泵（2）的驱动轴（26）在发动机齿轮箱（4）和承载燃料泵的驱动齿轮（10）的轴（14）之间形成驱动互连。 驱动轴具有稍微发散的润滑剂供应通道65，其从发动机齿轮箱中的喷油嘴（70）接收润滑剂，并将润滑剂引导到驱动轴内侧的接合花键（44,46）。 来自花键接合区域的润滑剂通过径向通路78，环形润滑剂返回通道68和径向通道80返回到齿轮箱。 跨越排水通道（86）的驱动轴上的O形圈密封件（82,84）防止润滑剂和可包围驱动轴中间部分的燃料的混合。 在驱动轴外侧的啮合的油润滑花键（40,42）的磨损应提供驱动轴内侧的花键磨损的一般指示，因为两端暴露于相似的润滑。

公开(公告)号：US4487548A

公开(公告)日：1984-12-11

申请号：US495987

申请日：1983-05-19

申请人： Frank A. Leachman, Jr. ,  Godwin L. Noell

发明人： Frank A. Leachman, Jr. ,  Godwin L. Noell

IPC分类号： F02C7/22 ,  F04D15/00 ,  F04D29/22 ,  F01D19/00

CPC分类号： F04D15/0005 ,  F02C7/22 ,  F04D29/2211

摘要： A centrifugal main fuel pump (10') for a gas turbine engine has a housing (12') in which a centrifugal impeller (16') is mounted for rotation. The centrifugal impeller includes a disc (24') which carries starting flow impeller elements (34) which are positioned in a radially outer location on the disc and also carries main flow impeller elements (26') positioned in a radially inner location on the disc. The starting flow impeller elements discharge to a starting flow collector (38) and diffuser (44) and the main flow impeller elements discharge to a separate collector (30') and diffuser (32'). The starting flow impeller elements produce adequate fuel flow at the pressure necessary for engine lightoff while the main flow impeller elements are adapted to supply engine fuel flow demand in the normal range of operation. A check valve (46) prevents starting flow from returning to the centrifugal impeller. The check valve opens to allow the main flow impeller elements to supply fuel when their discharge pressure exceeds that of the starting flow impeller elements. The addition of a starting element to the impeller results in minimal additional parasitic power loss.

摘要翻译： 用于燃气涡轮发动机的离心式主燃料泵（10'）具有壳体（12'），其中安装有用于旋转的离心式叶轮（16'）。 离心式叶轮包括一个托盘（24'），该盘（24'）承载起始流动叶轮元件（34），该元件位于盘的径向外部位置，并且还承载位于盘的径向内部位置的主流动叶轮元件（26'） 。 启动流动叶轮元件排放到起动集流器（38）和扩散器（44），并且主流体叶轮元件排放到单独的收集器（30'）和扩散器（32'）。 起动流动叶轮元件在发动机熄灯所需的压力下产生足够的燃料流量，而主流量叶轮元件适于在正常操作范围内提供发动机燃料流量需求。 止回阀（46）防止返回到离心式叶轮的启动流。 止回阀打开以允许主流量叶轮元件在其排出压力超过起动流动叶轮元件的排出压力时供应燃料。 将启动元件添加到叶轮将导致最小的额外的寄生功率损失。

公开(公告)号：US4454713A

公开(公告)日：1984-06-19

申请号：US270484

申请日：1981-06-04

申请人： Gene A. Meyer ,  Robert E. Peck

发明人： Gene A. Meyer ,  Robert E. Peck

IPC分类号： F02C9/28

CPC分类号： F02C9/28

摘要： A fuel metering system for a gas turbine engine with a low pressure drop fuel vaporizing system includes an engine driven centrifugal pump (10) supplied with fuel at a given absolute pressure (Pi) from a tank. The pump discharges fuel to a rapidly pulsed, solenoid operated ball valve (20) which functions as a metering valve in controlling flow to the engine. The solenoid (38) of the metering valve receives periodic voltage pulses of appropriate width from an electronic control which senses selected engine parameters and computes the required fuel flow and the pressure differential (Pr-P.sub.D) across the metering valve. Since the pressure differential across the metering valve increases with engine speed, favorable flow turndown ratios may be achieved without operating the metering valve at high or low values of duty cycle.

摘要翻译： 一种用于具有低压降燃料蒸发系统的燃气涡轮发动机的燃料计量系统，包括从罐提供给定绝对压力（Pi）的燃料的发动机驱动的离心泵（10）。 泵将燃料排放到快速脉冲的电磁操作的球阀（20）上，该球阀用作控制流向发动机的计量阀。 计量阀的螺线管（38）从电子控制器接收适当宽度的周期性电压脉冲，该电子控制器感测所选择的发动机参数，并计算跨越计量阀的所需燃料流量和压力差（Pr-PD）。 由于计量阀上的压力差随着发动机转速的增加而增加，因此可以在不使用计量阀处于高或低占空比的情况下实现有利的流量调节比。

公开(公告)号：US4423593A

公开(公告)日：1984-01-03

申请号：US369301

申请日：1982-04-16

申请人： Raymond D. Zagranski ,  James J. Howlett

发明人： Raymond D. Zagranski ,  James J. Howlett

IPC分类号： F02C3/10 ,  F02C9/28

CPC分类号： F02C9/28 ,  F05D2270/022

摘要： The difference in the speed (54, 56) of a helicopter gas engine (20), free turbine (40) from a reference speed (62, 64) generates (80) a desired acceleration signal (81). The difference (82) in actual turbine acceleration (84, 86) from desired acceleration is integrated (100) to provide an engine fuel command signal (67-73) whenever (88) the speed error signal exceeds (90) a predetermined threshold magnitude.

摘要翻译： 直升机燃气发动机（20），从参考速度（62,64）起的空气涡轮（40）的速度（54,56）的差异产生（80）期望的加速度信号（81）。 当期望加速度的实际涡轮加速度（84,86）中的差（82）积分（100）以提供发动机燃料指令信号（67-73），每当（88）速度误差信号超过（90）预定阈值 。

公开(公告)号：US4408961A

公开(公告)日：1983-10-11

申请号：US349009

申请日：1982-02-16

申请人： Bernard D. Laybourne

发明人： Bernard D. Laybourne

IPC分类号： F04F5/48

CPC分类号： F04F5/48 ,  Y10T137/7834 ,  Y10T137/7835

摘要： A combined pressure regulator and jet pump includes a valve member and cooperating nozzle defining member which are coaxial and independently movable. Both members are responsive to the difference in upstream and downstream pressures and each member will move relative to the other in response to a predetermined pressure difference. The relative movement between the nozzle defining and valve members will not interrupt the pumping action resulting from fluid flow through the variable area nozzle formed by these members.

摘要翻译： 组合的压力调节器和喷射泵包括同轴且可独立移动的阀构件和配合的喷嘴限定构件。 两个构件都响应于上游和下游压力的差异，并且每个构件将响应于预定的压力差相对于另一个移动。 喷嘴限定和阀构件之间的相对运动不会中断由流体流过由这些构件形成的可变区域喷嘴的泵送动作。

公开(公告)号：US4408953A

公开(公告)日：1983-10-11

申请号：US337473

申请日：1982-01-06

申请人： Pius J. Nasvytis ,  George W. Jahrstorfer

发明人： Pius J. Nasvytis ,  George W. Jahrstorfer

IPC分类号： F02C7/22 ,  F04D9/04 ,  F04D13/02 ,  F04D29/22 ,  F04D29/44 ,  F01D1/10 ,  F04D13/14

CPC分类号： F04D13/021 ,  F02C7/22 ,  F04D1/06 ,  F04D29/2277 ,  F04D29/447 ,  F04D9/04

摘要： A high speed fuel pump for a gas turnbine engine has a positively-driven shroud (28) positioned between a main impeller (14) and the wall of a pumping cavity (12) to reduce impeller drag. The shroud is formed by a first disc (30) having a boost impeller (36) connected to its central hub portion 30a and a second disc (32) having a gear (32b) carried by its central hub portion (32a). The main drive shaft assembly (24), to which the main impeller is connected, carries a gear (64) which meshes with gear (62) mounted upon a shaft (58). The shaft (58) also carries a gear (56) which meshes with the gear 32b. The gears are sized so that the shroud is driven at one-half the speed of the main impeller in order to maximize impeller drag reduction and enhance pumping capability when severe inlet conditions are present at the pump inlet (10).

摘要翻译： 一种用于气体旋转阀发动机的高速燃料泵具有位于主叶轮（14）和泵送腔（12）的壁之间的主动驱动罩（28），以减少叶轮的阻力。 护罩由具有连接到其中心毂部分30a的增压叶轮（36）的第一盘（30）和具有由其中心毂部（32a）承载的齿轮（32b）的第二盘（32）形成。 与主叶轮连接的主驱动轴组件（24）承载与安装在轴（58）上的齿轮（62）啮合的齿轮（64）。 轴（58）还承载与齿轮32b啮合的齿轮（56）。 齿轮的尺寸使得护罩以主叶轮的一半速度被驱动，以便在泵入口（10）处存在严重的入口条件时，最大化叶轮阻力减小和增强泵送能力。

公开(公告)号：US4061439A

公开(公告)日：1977-12-06

申请号：US700763

申请日：1976-06-29

申请人： Karl H. Pech

发明人： Karl H. Pech

IPC分类号： F04D13/02 ,  F04D13/12 ,  B27C9/00

CPC分类号： F04D13/12 ,  F04D13/021

摘要： A fuel pump assembly for a gas turbine engine incorporates an impeller pump and a vane pump which are driven by a common drive shaft. A centrifugally operated clutch functions to disengage the vane pump from the drive shaft at a predetermined angular velocity. The vane pump is designed to fulfill dry lift, starting flow and pressure requirements for the engine. The impeller pump, alone, provides fuel to the engine near idle speed and above after the vane pump has been disengaged from the drive shaft.

摘要翻译： 用于燃气涡轮发动机的燃料泵组件包括由公共驱动轴驱动的叶轮泵和叶片泵。 离心操作的离合器用于以预定的角速度将叶片泵与驱动轴分离。 叶片泵设计用于满足发动机的干式起升，起动流量和压力要求。 单独的叶轮泵在叶片泵已经从驱动轴分离之后向发动机提供燃料，怠速和高于燃油。

公开(公告)号：US4047859A

公开(公告)日：1977-09-13

申请号：US714598

申请日：1976-08-16

申请人： Jack Gunnar Sundberg

发明人： Jack Gunnar Sundberg

IPC分类号： F04C2/356 ,  F04C15/00 ,  F04C1/00

CPC分类号： F04C2/3568

摘要： A vane pump has a cam member carried upon a drive shaft in coaxial relationship therewith. The axial sides of the cam member define annular cam surfaces which each engage an array of vanes disposed in a fixedly mounted stator. An interior portion of the drive shaft is hollowed to provide a fluid inlet to passages in the cam member which communicate with the cam surfaces. The cam member is provided with additional passages to receive discharge flow from intervane volumes and direct such flow to the radially outer periphery of the cam member.

摘要翻译： 叶片泵具有承载在与其同轴关系的驱动轴上的凸轮构件。 凸轮构件的轴向侧面限定环形凸轮表面，每个凸轮表面接合设置在固定安装的定子中的一组叶片。 驱动轴的内部是中空的，以提供与凸轮部件中与凸轮表面连通的通道的流体入口。 凸轮构件设置有附加通道，以接收来自间隙体积的排出流，并将该流动引导到凸轮构件的径向外周。

公开(公告)号：US4030289A

公开(公告)日：1977-06-21

申请号：US410606

申请日：1973-10-29

申请人： Robert F. Kampe

发明人： Robert F. Kampe

IPC分类号： F02K1/28 ,  F02K1/36 ,  F23R1/00

CPC分类号： F02K1/28 ,  F02K1/36

摘要： A thrust augmentation technique wherein a primary gas stream is directionally switched at a high rate to produce flow discontinuities in the interest of increasing efficiency. Apparatus in accordance with the invention includes a fluidic switch, particularly a controlled expansion thrust vector control nozzle, which delivers a pulsating primary gas stream to an eductor or lift surface.

摘要翻译： 推力增加技术，其中主气流以高速率定向切换以产生流动不连续性，以提高效率。 根据本发明的装置包括流体开关，特别是控制的膨胀推力矢量控制喷嘴，其将脉动的主气流输送到喷射器或提升表面。