公开(公告)号：EP1826408A2

公开(公告)日：2007-08-29

申请号：EP07250722.1

申请日：2007-02-21

Applicant: Hamilton Sundstrand Corporation

Inventor： Parsons, Douglas A. ,  Alstrin, Kevin E.

IPC: F04B51/00

CPC classification number: F04B51/00 ,  F04B49/065 ,  F04B2201/0803 ,  F04B2203/0201 ,  F04B2203/0209 ,  F04C14/08 ,  F04C2220/24 ,  F04C2240/81 ,  F04C2270/80 ,  F04C2270/86

Abstract: A metering pump (18) incorporates a method of relating inner loop current to a pump output pressure. Pump/motor speed, which correlates to current, is measured and controlled by a system controller (12). System temperature is also measured by the system controller (12). The controller (12) monitors the measured system temperature and provides for compensation for system losses, including inductive-resistive (IR) losses, and for density and viscosity shifts, within a pre-determined allowable system temperature operating range. An initial system calibration is conducted using a "shut-off" test, where the metering pump is run at a very slow known speed while the system is shut-off. After initial start-up, a health-monitoring feature continues to monitor the current as an indicator of pump performance and continuously adjusts a motor speed to maintain a desired level of pump performance. This provides the system with the ability to compensate for performance losses, including performance losses due to variations in operating conditions, and to compensate for pump wear.

Abstract translation: 计量泵（18）包括将内部回路电流与泵输出压力相关联的方法。 与电流相关的泵/电动机速度由系统控制器（12）测量和控制。 系统温度也由系统控制器（12）测量。 控制器（12）监视所测量的系统温度，并在预定的允许系统温度运行范围内提供对系统损耗的补偿，包括电感电阻（IR）损耗以及密度和粘度变化。 使用“关闭”测试进行初始系统校准，其中计量泵在系统关闭时以非常慢的已知速度运行。 初次启动后，健康监测功能将继续监测电流作为泵性能的指标，并持续调整电机转速以保持所需的泵性能水平。 这为系统提供了补偿性能损失的能力，包括由于操作条件的变化而导致的性能损失，并补偿了泵的磨损。

公开(公告)号：EP0777887B1

公开(公告)日：2003-12-10

申请号：EP95930788.5

申请日：1995-08-02

Applicant: DIONEX CORPORATION

Inventor： WOLZE, David, A.

IPC: G06F19/00 ,  B01D15/08 ,  G01N30/32 ,  F04B49/06 ,  F04B49/20 ,  G05D7/06

CPC classification number: G05D7/0682 ,  F04B49/065 ,  F04B49/20 ,  F04B2201/0803 ,  F04B2205/05 ,  F04B2205/09 ,  F04B2207/041 ,  F04B2207/042 ,  G01N30/32 ,  G01N2030/324 ,  G01N2030/326

Abstract: Flowrate in a liquid chromatography precision pump (100) employs a digital control system (128) with artificial intelligence (150). In a default flow mode, pump motor speed is controlled without using real-time pressure feedback, which speed in a pressure mode is controlled using the pump system pressure point. Pressure mode is commanded by the artificial intelligence (150) when constant displacement flow measurement time is within a desired threshold and when the higher pressure piston (34a or 34B), which is used as a constant displacement flow measurement reference, is being measured. Flow mode pressure ripple is minimized by monitoring pressure points and commanding motor (18) speed change at appropriate rotation positions of a motor shaft (24) mounted cam. In pressure mode, the artificial intelligence (150) monitors for intake cycle oscillation and optimizes a highest system pressure gain dynamically. Constant flowrate proportion is provided by activating proportioning only during a constant intake flow portion of an intake cycle.

公开(公告)号：EP3109470A1

公开(公告)日：2016-12-28

申请号：EP15174079.2

申请日：2015-06-26

Applicant: Danfoss A/S

Inventor： Andersen, Stig Kildegaard ,  Hansen, Poul Erik ,  Haugaard, Erik

IPC: F04B1/12 ,  F04B49/10 ,  F03C1/06 ,  F04F13/00

CPC classification number: F04B19/22 ,  F03C1/06 ,  F04B1/12 ,  F04B49/10 ,  F04B2201/0803 ,  F04F13/00

Abstract: A hydraulic machine arrangement (1) is described having a housing (5), a working section and a hollow inside said housing (5), a supply port arrangement LPin, HPin, LPout connected to said working area, and a leakage path (7) between said working section and said hollow.
It should be possible to detect wear with simple means.
To this end, said housing (5) is provided with a leakage port (8) connected to said hollow.

Abstract translation: 一种液压机器装置（1）被描述为在所述壳体（5）内部具有壳体（5），工作部分和中空部分，连接到所述工作区域的供应端口布置LPin，HPin，LPout和泄漏路径（7 ）在所述工作部分和所述中空部分之间。 应该可以用简单的手段检测磨损。 为此，所述壳体（5）设置有连接到所述中空部的泄漏口（8）。

公开(公告)号：EP2771578A1

公开(公告)日：2014-09-03

申请号：EP12727162.5

申请日：2012-05-29

Applicant: WATSON-MARLOW LIMITED

Inventor： WARREN, Oliver

IPC: F04B43/12 ,  F04B43/00

CPC classification number: F04B43/0081 ,  F04B43/009 ,  F04B43/12 ,  F04B43/1238 ,  F04B49/10 ,  F04B53/16 ,  F04B2201/0803 ,  F04B2207/70

Abstract: A peristaltic pump comprising a drive unit (1) and a pumphead (2) comprising a pressing element (48). The pumphead (2) is connectable to the drive unit (1) such that, when connected, the pressing element (48) is driveable by the drive unit (1) to exert a peristaltic action on a tube (52) arranged within the pumphead (2). The pumhead further comprises an optical sensor, wherein the optical sensor comprises an emitter (110) and a receiver (112) which are mounted on the drive unit (1) and a reflector element (53) mounted on the pumphead (2). The reflector element (53) is arranged on the pumphead (2) such that when the pumphead (2) is connected to the drive unit (1), radiation emitted by the emitter (110) is reflected by the reflector element (53) towards the receiver (112).

Abstract translation: 一种蠕动泵，包括驱动单元（1）和包括压紧元件（48）的泵头（2）。 泵头（2）可连接到驱动单元（1），使得当连接时，驱动单元（1）可驱动按压元件（48）以对布置在泵头内的管子（52）施加蠕动作用 （2）。 该泵头还包括光学传感器，其中光学传感器包括安装在驱动单元（1）上的发射器（110）和接收器（112）以及安装在泵头（2）上的反射器元件（53）。 反射器元件（53）布置在泵头（2）上，使得当泵头（2）连接到驱动单元（1）时，由发射器（110）发射的辐射被反射器元件（53）反射向 接收器（112）。

公开(公告)号：EP1826408B1

公开(公告)日：2018-08-22

申请号：EP07250722.1

申请日：2007-02-21

Applicant: Hamilton Sundstrand Corporation

Inventor： Parsons, Douglas A. ,  Alstrin, Kevin E.

IPC: F04B51/00 ,  F04B49/06 ,  F04C14/08 ,  F04D15/00

CPC classification number: F04B51/00 ,  F04B49/065 ,  F04B2201/0803 ,  F04B2203/0201 ,  F04B2203/0209 ,  F04C14/08 ,  F04C2220/24 ,  F04C2240/81 ,  F04C2270/80 ,  F04C2270/86

Abstract: A metering pump (18) incorporates a method of relating inner loop current to a pump output pressure. Pump/motor speed, which correlates to current, is measured and controlled by a system controller (12). System temperature is also measured by the system controller (12). The controller (12) monitors the measured system temperature and provides for compensation for system losses, including inductive-resistive (IR) losses, and for density and viscosity shifts, within a pre-determined allowable system temperature operating range. An initial system calibration is conducted using a "shut-off" test, where the metering pump is run at a very slow known speed while the system is shut-off. After initial start-up, a health-monitoring feature continues to monitor the current as an indicator of pump performance and continuously adjusts a motor speed to maintain a desired level of pump performance. This provides the system with the ability to compensate for performance losses, including performance losses due to variations in operating conditions, and to compensate for pump wear.

公开(公告)号：EP2188609A1

公开(公告)日：2010-05-26

申请号：EP08793888.2

申请日：2008-07-25

Applicant: National Oilwell Norway AS

Inventor： KYLLINGSTAD, Åge

IPC: G01M3/26 ,  F04B51/00

CPC classification number: G01M3/26 ,  F04B51/00 ,  F04B2201/0208 ,  F04B2201/0605 ,  F04B2201/0803

Abstract: A method for detection of a fluid leak related to at least one piston machine (1), where the method includes: - attaching a pressure sensor (18, 24) to at least a pressure side of the at least one piston machine (1); - measuring the pressure on the pressure side of the at least one piston machine (1); - attaching a transmitter (28) to the at least one piston ma-chine (1), said transmitter (28) rendering a signal for cal-culating the rotational speed of the at least one piston ma-chine (1); - calculating the speed of the at least one piston machine (1); - calculating the sum of nominal flow rates from all piston machines(1); - calculating a flow rate compensation factor; - calculating a normalized pressure (42) to be equal to the discharge pressure multiplied by the said compensation factor for the flow rate; and - monitoring the normalized pressure (42) to detect a leak-age.

Abstract translation: 1。一种用于检测与至少一个活塞机器（1）相关的流体泄漏的方法，其中所述方法包括： - 将压力传感器（18,24）附接到所述至少一个活塞机器（1）的至少一个压力侧， ; - 测量所述至少一个活塞式机器（1）的压力侧上的压力; - 将发射器（28）附接到所述至少一个活塞机（1），所述发射器（28）呈现用于计算所述至少一个活塞机（1）的旋转速度的信号; - 计算所述至少一个活塞式机器（1）的速度; - 计算来自所有活塞机器（1）的额定流量的总和; - 计算流量补偿因子; - 计算归一化压力（42），使其等于排出压力乘以流量的所述补偿因子; 和 - 监测归一化压力（42）以检测泄漏年龄。

公开(公告)号：EP0777887A1

公开(公告)日：1997-06-11

申请号：EP95930788.0

申请日：1995-08-02

Applicant: DIONEX CORPORATION

Inventor： WOLZE, David, A.

IPC: G01N30 ,  F04B49 ,  G05B13 ,  G05D7

CPC classification number: G05D7/0682 ,  F04B49/065 ,  F04B49/20 ,  F04B2201/0803 ,  F04B2205/05 ,  F04B2205/09 ,  F04B2207/041 ,  F04B2207/042 ,  G01N30/32 ,  G01N2030/324 ,  G01N2030/326

Abstract: Flowrate in a liquid chromatography precision pump (100) employs a digital control system (128) with artificial intelligence (150). In a default flow mode, pump motor speed is controlled without using real-time pressure feedback, which speed in a pressure mode is controlled using the pump system pressure point. Pressure mode is commanded by the artificial intelligence (150) when constant displacement flow measurement time is within a desired threshold and when the higher pressure piston (34a or 34B), which is used as a constant displacement flow measurement reference, is being measured. Flow mode pressure ripple is minimized by monitoring pressure points and commanding motor (18) speed change at appropriate rotation positions of a motor shaft (24) mounted cam. In pressure mode, the artificial intelligence (150) monitors for intake cycle oscillation and optimizes a highest system pressure gain dynamically. Constant flowrate proportion is provided by activating proportioning only during a constant intake flow portion of an intake cycle.

公开(公告)号：EP2771578B1

公开(公告)日：2017-07-12

申请号：EP12727162.5

申请日：2012-05-29

Applicant: WATSON-MARLOW LIMITED

Inventor： WARREN, Oliver

IPC: F04B43/12 ,  F04B43/00 ,  F04B53/16

CPC classification number: F04B43/0081 ,  F04B43/009 ,  F04B43/12 ,  F04B43/1238 ,  F04B49/10 ,  F04B53/16 ,  F04B2201/0803 ,  F04B2207/70

公开(公告)号：EP1826408A3

公开(公告)日：2010-12-22

申请号：EP07250722.1

申请日：2007-02-21

Applicant: Hamilton Sundstrand Corporation

Inventor： Parsons, Douglas A. ,  Alstrin, Kevin E.

IPC: F04B51/00 ,  F04B49/06 ,  F04C14/08 ,  F04D15/00

CPC classification number: F04B51/00 ,  F04B49/065 ,  F04B2201/0803 ,  F04B2203/0201 ,  F04B2203/0209 ,  F04C14/08 ,  F04C2220/24 ,  F04C2240/81 ,  F04C2270/80 ,  F04C2270/86

Abstract: A metering pump (18) incorporates a method of relating inner loop current to a pump output pressure. Pump/motor speed, which correlates to current, is measured and controlled by a system controller (12). System temperature is also measured by the system controller (12). The controller (12) monitors the measured system temperature and provides for compensation for system losses, including inductive-resistive (IR) losses, and for density and viscosity shifts, within a pre-determined allowable system temperature operating range. An initial system calibration is conducted using a "shut-off" test, where the metering pump is run at a very slow known speed while the system is shut-off. After initial start-up, a health-monitoring feature continues to monitor the current as an indicator of pump performance and continuously adjusts a motor speed to maintain a desired level of pump performance. This provides the system with the ability to compensate for performance losses, including performance losses due to variations in operating conditions, and to compensate for pump wear.

公开(公告)号：EP0777887A4

公开(公告)日：1998-12-02

申请号：EP95930788

申请日：1995-08-02

Applicant: DIONEX CORP

Inventor： WOLZE DAVID A

IPC: G01N30/34 ,  F04B49/06 ,  F04B49/08 ,  F04B49/20 ,  G01N30/32 ,  G05B13/02 ,  G05D7/06 ,  G06F19/00 ,  B01D15/08

CPC classification number: G05D7/0682 ,  F04B49/065 ,  F04B49/20 ,  F04B2201/0803 ,  F04B2205/05 ,  F04B2205/09 ,  F04B2207/041 ,  F04B2207/042 ,  G01N30/32 ,  G01N2030/324 ,  G01N2030/326

Abstract: Flowrate in a liquid chromatography precision pump (100) employs a digital control system (128) with artificial intelligence (150). In a default flow mode, pump motor speed is controlled without using real-time pressure feedback, which speed in a pressure mode is controlled using the pump system pressure point. Pressure mode is commanded by the artificial intelligence (150) when constant displacement flow measurement time is within a desired threshold and when the higher pressure piston (34a or 34B), which is used as a constant displacement flow measurement reference, is being measured. Flow mode pressure ripple is minimized by monitoring pressure points and commanding motor (18) speed change at appropriate rotation positions of a motor shaft (24) mounted cam. In pressure mode, the artificial intelligence (150) monitors for intake cycle oscillation and optimizes a highest system pressure gain dynamically. Constant flowrate proportion is provided by activating proportioning only during a constant intake flow portion of an intake cycle.