VARIABLE SPEED HYDRAULIC PUMP
    21.
    发明申请
    VARIABLE SPEED HYDRAULIC PUMP 审中-公开
    变速液压泵

    公开(公告)号:WO0179697A3

    公开(公告)日:2002-03-14

    申请号:PCT/US0112221

    申请日:2001-04-13

    Abstract: The invention provides a variable speed hydraulic pump designed to operate at a maximum horsepower throughout its pressure range by adjusting motor speed according to motor load parameters. In particular, the variable speed hydraulic pump includes a hydraulic pump unit coupled to a variable speed electric motor by a drive unit and to a hydraulic fluid tank for pressurizing and pumping hydraulic fluid when operated by the motor. A motor controller is electrically connected to the motor to supply drive signals to the motor based on electrical characteristics of the drive signals which are dependent on the load exerted on the motor. Suction from the load is provided by both the main pump and a bidirectional supercharging pump by reversing the direction of the motor and shifting a 4/3 valve to connect the main pump inlet to the load and its outlet to tank. In addition, the controller reduces the motor speed at the maximum rated pressure to just maintain the pressure, to reduce the amount of fluid pumped through the maximum pressure relief valve.

    Abstract translation: 本发明提供了一种变速液压泵,其设计为通过根据电动机负载参数调整电动机速度在其整个压力范围内以最大功率运行。 特别地,变速液压泵包括通过驱动单元连接到变速电动机的液压泵单元和用于在由电动机操作时对液压流体进行加压和泵送的液压油箱。 电动机控制器电连接到电动机,以基于驱动信号的电特性向电动机提供驱动信号,驱动信号取决于施加在电动机上的负载。 从主泵和双向增压泵通过反转电机的方向和移动4/3阀将主泵入口连接到负载及其出口到罐而由负载提供吸力。 此外,控制器将电机速度降低到最大额定压力,以保持压力,以减少通过最大压力释放阀泵送的液体量。

    STEUERUNGSEINRICHTUNG UND VERFAHREN ZUM BETREIBEN EINES KÄLTEMITTELKOMPRESSORS

    公开(公告)号:WO2018114978A1

    公开(公告)日:2018-06-28

    申请号:PCT/EP2017/083591

    申请日:2017-12-19

    Abstract: Elektronische Steuerungseinrichtung für einen Kältemittelkompressor, welcher zumindest eine Antriebseinheit sowie einen mit der Antriebseinheit in Wirkverbindung stehenden Kompressionsmechanismus mit zumindest einem sich in einem Zylinder eines Zylinderblocks des Kältemittelkompressors in einem Betriebszustand des Kältemittelkompressors zur betriebsgemäßen Verdichtung von Kältemittel hin- und herbewegenden und über eine Kurbelwelle der Antriebseinheit angetriebenen Kolben umfasst, wobei die elektronische Steuerungseinrichtung des Kältemittelkompressors zumindest dazu eingerichtet ist, zumindest einen physikalischen Prozessparameter, vorzugsweise die Drehgeschwindigkeit (n) der Kurbelwelle oder die Leistungsaufnahme des Kältemittelkompressors, zu detektieren, ein an den Kältemittelkompressor gerichtetes Abschaltsignal zu detektieren, welches Abschaltsignal eine Betriebsphase des Kältemittelkompressors beendet, in welcher Betriebsphase der Kältemittelkompressor mit einem positiven Betriebsdrehmoment bestimmungsgemäß betrieben wird, sowie dazu eingerichtet ist, ein von der Antriebseinheit an die Kurbelwelle zur Einstellung deren Drehgeschwindigkeit (n) angelegtes Drehmoment zu regeln, wobei die elektronische Steuerungseinrichtung weiters dazu eingerichtet ist, unmittelbar nach Detektieren des Abschaltsignals ein Bremsmoment an die Kurbelwelle anzulegen, wobei das Bremsmoment dem während der Betriebsphase vorherrschenden positiven Drehmoment entgegengerichtet ist und der Betrag dieses Bremsmomentes eine Funktion des detektierten physikalischen Prozessparameters, vorzugsweise der Drehgeschwindigkeit (n) der Kurbelwelle oder der Leistungsaufnahme des Kältemittelkompressors, ist.

    METHOD AND DEVICE FOR OPERATING AN ELECTRIC PERISTALTIC HOSE PUMP
    23.
    发明申请
    METHOD AND DEVICE FOR OPERATING AN ELECTRIC PERISTALTIC HOSE PUMP 审中-公开
    方法和装置运行电动蠕动软管泵

    公开(公告)号:WO2007104435A2

    公开(公告)日:2007-09-20

    申请号:PCT/EP2007001754

    申请日:2007-03-01

    Abstract: The invention relates to a method and to a device for operating an electric peristaltic hose pump, in particular a hose pump for transporting fluids in medical-technical devices, in particular extracorporeal blood treatment devices. In order to monitor the regular operation of a hose pump, the power consumption of the pump or a physical variable in correlation with the power consumption, in particular the pump flow, is monitored. According to the invention, the pump flow comprises a periodically non-altering direct component which is superimposed on a periodically altering alternating component. In order to monitor the regular operation of the hose pump, the alternating component of the power consumption in relation to the direct component of the power consumption is monitored as whether it increases and/or decreases during blood treatment.

    Abstract translation: 本发明涉及一种用于操作电动蠕动软管泵,特别是软管泵用于医疗技术装置输送流体,特别是体外血液处理设备的方法和装置。 用于监测软管泵的正常操作中,泵或物理量的功耗相关联的值的电力消耗,特别是泵的电流被监视。 本发明是基于这样的泵电流具有不周期性变化的直流成分,向其中一个周期性变化的交流分量叠加。 用于监测蠕动泵的正确操作的血液处理期间被监控,如成比例地消耗电力或滴剂的DC分量的功率消耗增加了交变分量。

    Methods and systems for operating a fleet of pumps

    公开(公告)号:US11852001B2

    公开(公告)日:2023-12-26

    申请号:US18108752

    申请日:2023-02-13

    Abstract: Embodiments of a system, controller, and method for operating a plurality of pumps for a turbine driven fracturing pump system used in hydraulic fracturing are disclosed. In an embodiment, a method of operating a plurality of pumps associated with a hydraulic fracturing system includes receiving a demand Hydraulic Horse Power (HHP) signal. The demand HHP signal may include the Horse Power (HP) required for the hydraulic fracturing system to operate and may include consideration for frictional and other losses. The method further includes operating available pump units at a percentage of rating below Maximum Continuous Power (MCP) level, based at least in part on the demand HHP signal. Furthermore, the method may include receiving a signal for loss of power from one or more pump units. The method further includes operating one or more units at MCP level and operating one or more pump units at Maximum Intermittent Power (MIP) level to meet the demand HHP signal.

    METHOD AND APPARATUS FOR MONITORING THE PERFORMANCE OF A COMPRESSOR
    28.
    发明申请
    METHOD AND APPARATUS FOR MONITORING THE PERFORMANCE OF A COMPRESSOR 审中-公开
    监测压缩机性能的方法和装置

    公开(公告)号:US20100021314A1

    公开(公告)日:2010-01-28

    申请号:US12178136

    申请日:2008-07-23

    Applicant: Jackey Lee

    Inventor: Jackey Lee

    Abstract: A method of monitoring the operation of a compressor includes sensing a parameter on a housing of the compressor from a device placed on the housing, generating a representative sensor signal in response to the sensed parameter, transmitting from the device a data signal related to the representative sensor signal, and receiving the data signal at a location remote from the housing. Other methods and an apparatus for monitoring the compressor are further disclosed.

    Abstract translation: 监视压缩机的操作的方法包括:从放置在壳体上的装置感测压缩机壳体上的参数,响应于所感测的参数产生代表性的传感器信号,从设备发送与代表相关的数据信号 传感器信号,以及在远离壳体的位置处接收数据信号。 还公开了用于监视压缩机的其它方法和装置。

    Variable speed hydraulic pump
    29.
    发明授权
    Variable speed hydraulic pump 有权
    变速液压泵

    公开(公告)号:US06863502B2

    公开(公告)日:2005-03-08

    申请号:US10257302

    申请日:2001-04-13

    Abstract: The invention provides a variable speed hydraulic pump designed to operate at a maximum horsepower throughout its pressure range by adjusting motor speed according to motor load parameters. In particular, the variable speed hydraulic pump includes a hydraulic pump unit coupled to a variable speed electric motor by a drive unit and to a hydraulic fluid tank for pressurizing and pumping hydraulic fluid when operated by the motor. A motor controller is electrically connected to the motor to supply drive signals to the motor based on electrical characteristics of the drive signals which are dependent on the load exerted on the motor. Suction from the load is provided by both the main pump and a bidirectional supercharging pump by reversing the direction of the motor and shifting a 4/3 valve to connect the main pump inlet to the load and its outlet to tank. In addition, the controller reduces the motor speed at the maximum rated pressure to just maintain the pressure, to reduce the amount of fluid pumped through the maximum pressure relief valve.

    Abstract translation: 本发明提供了一种变速液压泵,其设计为通过根据电动机负载参数调整电动机速度在其整个压力范围内以最大功率运行。 特别地,变速液压泵包括通过驱动单元连接到变速电动机的液压泵单元和用于在由电动机操作时对液压流体进行加压和泵送的液压油箱。 电动机控制器电连接到电动机,以基于驱动信号的电特性向电动机提供驱动信号,驱动信号取决于施加在电动机上的负载。 从主泵和双向增压泵通过反转电机的方向和移动4/3阀将主泵入口连接到负载及其出口到罐而由负载提供吸力。 此外,控制器将电机速度降低到最大额定压力,以保持压力,以减少通过最大压力释放阀泵送的液体量。

    Control systems for hydraulic pumps of the variable displacement type
    30.
    发明授权
    Control systems for hydraulic pumps of the variable displacement type 失效
    变量式液压泵控制系统

    公开(公告)号:US5297941A

    公开(公告)日:1994-03-29

    申请号:US980269

    申请日:1992-11-23

    Applicant: An H. Park

    Inventor: An H. Park

    CPC classification number: F04B1/324 F04B49/08 F04B2201/1203

    Abstract: A control system for a hydraulic pump of the variable displacement type using a pair of coaxially arranged pressure responding pistons. The control system comprises a servo valve for controlling a conduit of pump delivery pressure which is to be applied to a larger chamber of a servo cylinder in response to the pump delivery pressure and external pilot pressure. The servo valve includes a servo spool for controlling the conduit in order to control the pump delivery pressure, a servo sleeve for movably receiving the servo spool, a pump delivery pressure responding piston for biasing the servo spool in response to the pump delivery pressure, an external pilot pressure responding piston adapted for biasing the servo spool in response to the external pilot pressure and being coaxially arranged with the pump delivery pressure responding piston. The lever assembly causes the servo sleeve to move in accordance with the movement of the servo piston. The lever assembly has an inclined surface part for causing displacement of the servo piston as a function of displacement of the pressure responding pistons to show a characteristic hyperbola.

    Abstract translation: 一种使用一对同轴布置的压力响应活塞的可变排量型液压泵的控制系统。 该控制系统包括一个伺服阀,用于响应于泵输送压力和外部先导压力而控制将被施加到伺服缸的较大腔室的泵输送压力的导管。 伺服阀包括用于控制导管以便控制泵输送压力的伺服阀芯,用于可移动地接收伺服阀芯的伺服套筒,用于响应于泵输送压力偏压伺服阀芯的泵输送压力响应活塞, 外部先导压力响应活塞,其适于响应于外部先导压力偏压伺服阀芯,并与泵输送压力响应活塞同轴布置。 杠杆组件使得伺服套筒根据伺服活塞的运动而移动。 杠杆组件具有倾斜表面部分,用于使伺服活塞作为压力响应活塞的位移的函数来显示特征双曲线。

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