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    Method for detecting pump-off of a rod pumped well
    2.
    发明授权
    Method for detecting pump-off of a rod pumped well 失效
    检测抽油杆抽油的方法

    公开(公告)号：US5237863A

    公开(公告)日：1993-08-24

    申请号：US802799

    申请日：1991-12-06

    Applicant: Cleon L. Dunham

    Inventor： Cleon L. Dunham

    IPC: E21B47/00 ,  F04B49/02

    CPC classification number: F04B49/02 ,  E21B47/0006 ,  E21B47/0008 ,  F04B2201/12

    Abstract: A method for monitoring a rod pumped well and detecting when the well is pumped off. The method utilizes the measured rod load and position for each stroke to set load limits and position limits. The load limits and position limits are set as predetermined percentages of the difference between the maximum and minimum measured rod load and position. The area within the thus determined load and position limits is determined to detect when the well has pumped-off.

    Abstract translation: 一种用于监测杆抽取井并检测井何时抽出的方法。 该方法利用测量的杆载荷和每个行程的位置来设定载荷极限和位置限制。 负载限制和位置限制设置为最大和最小测量的杆载荷和位置之间的差的预定百分比。 确定如此确定的负载和位置限制内的区域以检测井何时抽出。

    Piezoelectric microblower
    3.
    发明授权
    Piezoelectric microblower 有权
    压电微型鼓风机

    公开(公告)号：US08684707B2

    公开(公告)日：2014-04-01

    申请号：US12959462

    申请日：2010-12-03

    Applicant: Shungo Kanai ,  Gaku Kamitani ,  Yoko Kaneda

    Inventor： Shungo Kanai ,  Gaku Kamitani ,  Yoko Kaneda

    IPC: F04B17/00 ,  F04B35/04

    CPC classification number: F04B45/047 ,  F04B2201/0806 ,  F04B2201/12

    Abstract: A piezoelectric microblower includes a vibrating plate including a piezoelectric element and arranged to be driven in a bending mode by applying a voltage of a predetermined frequency to the piezoelectric element, and a blower body arranged to fix both ends or a periphery of the vibrating plate and to define a blower chamber between the blower body and the vibrating plate, an opening being provided in a portion of the blower body facing a central portion of the vibrating plate. In a portion of the blower chamber corresponding to the central portion of the vibrating plate, a partition is provided around the opening and a resonance space is defined inside of the partition. A size of the resonance space is set such that a driving frequency of the vibrating plate and a Helmholtz resonance frequency of the resonance space correspond to each other.

    Abstract translation: 一种压电微型鼓风机包括：振动板，其包括压电元件，并配置为通过向压电元件施加预定频率的电压而以弯曲模式驱动;以及鼓风机主体，其布置成将振动板的两端或周边固定，以及 在所述鼓风机主体和所述振动板之间限定鼓风机室，所述鼓风机主体的面向所述振动板的中心部分的部分设置有开口。 在对应于振动板的中心部分的鼓风机室的一部分中，在开口周围设置隔板，并且在隔板内限定共振空间。 谐振空间的大小被设定为使得振动板的驱动频率和谐振空间的亥姆霍兹共振频率彼此对应。

    Marine steering system having dual hydraulic and electronic output
    4.
    发明授权
    Marine steering system having dual hydraulic and electronic output 有权
    船用转向系统具有双液压和电子输出

    公开(公告)号：US06564739B2

    公开(公告)日：2003-05-20

    申请号：US09931745

    申请日：2001-08-20

    Applicant: Peter Doetsch

    Inventor： Peter Doetsch

    IPC: B63H2500

    CPC classification number: B63H25/12 ,  B63H25/24 ,  B63H25/30 ,  F04B1/20 ,  F04B9/14 ,  F04B2201/12

    Abstract: A marine steering system operable in either power steering or manual hydraulic modes. The system employs a modified helm pump having a single rotatable input shaft connectable to a steering wheel and dual hydraulic and electronic output. An encoder, such as an optical incremental encoder or hall effect device, is mechanically coupled to the input shaft for generating an electronic steering control signal representative of the change in position of the steering wheel. In the power steering mode, the electronic steering signal is processed by an amplifier controlling the operation of an auxiliary pumpset connected to the rudder steering cylinder. A bypass manifold disposed between the helm pump and the steering cylinder disables the hydraulic steering system in the power steering mode. In the event of power failure, the bypass manifold valves are opened and the system automatically switches to manual hydraulic steering.

    Abstract translation: 可在动力转向或手动液压模式下操作的船用转向系统。 该系统采用改进的舵泵，其具有可连接到方向盘的单个可旋转输入轴和双液压和电子输出。 诸如光学增量编码器或霍尔效应装置的编码器机械地联接到输入轴，以产生代表方向盘位置变化的电子转向控制信号。 在动力转向模式中，电子转向信号由控制连接到方向舵缸的辅助泵组的操作的放大器进行处理。 设置在舵泵和转向缸之间的旁通歧管在动力转向模式下禁止液压转向系统。 在断电的情况下，旁路歧管阀打开，系统自动切换到手动液压转向。

    Rod-pump controller
    5.
    发明授权
    Rod-pump controller 有权

    公开(公告)号：US12000262B2

    公开(公告)日：2024-06-04

    申请号：US17321424

    申请日：2021-05-15

    Applicant: Williams NR Automation LLC

    Inventor： Jason Williams

    IPC: E21B47/009 ,  E21B43/12 ,  F04B47/02 ,  F04B49/02 ,  F04B49/06

    CPC classification number: E21B47/009 ,  E21B43/127 ,  F04B47/022 ,  F04B49/02 ,  F04B49/065 ,  F04B47/02 ,  F04B2201/0801 ,  F04B2201/12 ,  F04B2201/121 ,  F04B2203/02

    Abstract: A rod-pump control device is disclosed. The rod-pump control device uses AMP (current) measurements for electric units, fuel or air usage for gas units, and can use pressure for either unit. The AMP/fuel/air sensors work as the primary trigger to indicate a pump-off condition on an oil and gas well. These sensors can be used as stand-alone triggers or in conjunction with other sensors to more accurately monitor pump efficiency. When the pump-controller starts to indicate an inefficient pump condition, it will turn the pump off by removing power from the electric motor. For gas powered units, the controller will remove power to disengage an electric clutch or send a signal to an engine controller to stop. An adjustable algorithm will use percentage change of off time, dependent on actual run time compared to a user definable target time to keep the pump operating at peak efficiency.

    Constant Net Implement Pump Valve Flow
    7.
    发明申请
    Constant Net Implement Pump Valve Flow 审中-公开
    恒网净泵阀流量

    公开(公告)号：US20160319517A1

    公开(公告)日：2016-11-03

    申请号：US14699572

    申请日：2015-04-29

    Applicant: Caterpillar Inc.

    Inventor： Adam Nackers

    IPC: E02F9/22

    CPC classification number: E02F9/2278 ,  E02F9/2095 ,  E02F9/226 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F02D29/04 ,  F04B1/26 ,  F04B17/05 ,  F04B23/06 ,  F04B49/065 ,  F04B2201/12

    Abstract: A control system for a machine having a cylinder and an accessory is disclosed. The control system may include a pump configured to provide fluid to the cylinder and the accessory, and a controller operatively connected to the pump. The controller may be configured to operate the pump to provide a primary flow to the cylinder at up to a predetermined maximum level for the cylinder. The predetermined maximum level for the cylinder may be less than a maximum flow capability of the pump. The controller may also be configured to operate the pump to provide a secondary flow to the accessory utilizing a remaining fluid.

    Abstract translation: 公开了一种具有圆筒和附件的机器的控制系统。 控制系统可以包括构造成向缸和附件提供流体的泵，以及可操作地连接到泵的控制器。 控制器可以被配置为操作泵以在气缸上以达到预定最大水平的速度向缸提供初级流。 气缸的预定最大水平可能小于泵的最大流量能力。 控制器还可以被配置为操作泵，以利用剩余的流体向附件提供二次流。

    Electronic camshaft motor control for piston pump
    8.
    发明授权
    Electronic camshaft motor control for piston pump 有权
    电动凸轮轴马达控制活塞泵

    公开(公告)号：US08807958B2

    公开(公告)日：2014-08-19

    申请号：US12442782

    申请日：2007-09-25

    Applicant: Timothy Sidlyarevich ,  James Campbell ,  John A. Metza

    Inventor： Timothy Sidlyarevich ,  James Campbell ,  John A. Metza

    IPC: F04B43/12 ,  F04B11/00

    CPC classification number: F04B11/005 ,  F04B11/0058 ,  F04B15/02 ,  F04B17/03 ,  F04B49/06 ,  F04B2201/00 ,  F04B2201/12 ,  F04B2201/1201 ,  F04B2203/02 ,  F04B2203/0209 ,  F04B2205/00 ,  F04B2205/05

    Abstract: A two (or more) piston pump system (10) is provided with both pumps (12) being crank (14) driven. The system does not have a mechanical camshaft, but a software algorithm, which acts like one in controller (20). The algorithm will LEARN and create a unique speed profile, which will mimic the mechanical camshaft. For practical purposes the speed profile of output gear is called Cam profile with software acting as an imaginary camshaft. The algorithm utilizes Crank Angle Estimation, Learn Curve Generation, Smoothing and Advance Timing Calculation.

    Abstract translation: 两个（或多个）活塞泵系统（10）设置有驱动曲柄（14）的两个泵（12）。 该系统没有机械凸轮轴，而是一个软件算法，它像控制器（20）中一样。 该算法将学习并创建一个独特的速度曲线，这将模拟机械凸轮轴。 出于实际目的，输出齿轮的速度曲线称为凸轮轮廓，软件用作假想凸轮轴。 该算法利用曲柄角估计，学习曲线生成，平滑和提前计时。

    HYDRAULIC FAN DRIVE FOR AN INTERNAL COMBUSTION ENGINE
    10.
    发明申请
    HYDRAULIC FAN DRIVE FOR AN INTERNAL COMBUSTION ENGINE 有权
    用于内燃机的液压风扇驱动

    公开(公告)号：US20130243611A1

    公开(公告)日：2013-09-19

    申请号：US13616131

    申请日：2012-09-14

    Applicant: Egon Rill

    Inventor： Egon Rill

    IPC: F04D13/02

    CPC classification number: F04B27/18 ,  F01P7/044 ,  F01P2025/62 ,  F01P2025/64 ,  F04B1/26 ,  F04B1/34 ,  F04B17/05 ,  F04B49/02 ,  F04B49/06 ,  F04B49/12 ,  F04B2201/12 ,  F04B2205/06 ,  F04B2207/044 ,  F04D13/02

    Abstract: A hydraulic fan drive for a cooling system of an internal combustion engine, in particular a diesel engine of a mobile working machine or a construction machine, is configured to be switched off for a short time or by way of a transition in dependence on a load of the internal combustion engine. A shut-off valve, which is arranged in a working line connecting a variable-displacement pump to a fan motor, is configured to switch off the fan drive. The fan drive is further configured to be switched off by rotational speed monitoring of the internal combustion engine.

    Abstract translation: 用于内燃机，特别是可移动工作机械或建筑机械的柴油发动机的冷却系统的液压风扇驱动器被配置为在短时间内关闭或通过依赖于负载的转换 的内燃机。 配置在将可变排量泵连接到风扇马达的工作线中的截止阀被配置为关闭风扇驱动器。 风扇驱动器被进一步构造成通过内燃机的转速监视来关闭。

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