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    Method for controlling several pumps
    11.
    发明申请
    Method for controlling several pumps 有权
    多台泵的控制方法

    公开(公告)号：US20040071554A1

    公开(公告)日：2004-04-15

    申请号：US10646241

    申请日：2003-08-22

    Applicant: GRUNDFOS A/S

    Inventor： Peter Jungklas Nybo ,  Lasse Ilves ,  Heikki Yli-Korpela

    IPC: F04B049/00

    CPC classification number: F04D15/029

    Abstract: The invention relates to a method for controlling several pumps in a pump sump, with which each pump comprises a switch which switches on the pump and each pump after its running is first blocked and depending on the running of the further pumps in the pump sump is released again. The invention further relates to a pump for carrying out this method.

    Abstract translation: 本发明涉及一种用于控制泵槽中的多个泵的方法，每个泵包括开关，其在其运行首先被阻塞之后接通泵和每个泵，并且取决于泵泵中的另外的泵的运行 再次释放 本发明还涉及一种用于执行该方法的泵。

    Method of counterflow through a pump and method of controlling the operation of a pump in a pumping installation
    12.
    发明授权
    Method of counterflow through a pump and method of controlling the operation of a pump in a pumping installation 失效
    通过泵逆流的方法和在泵送装置中控制泵的操作的方法

    公开(公告)号：US5456115A

    公开(公告)日：1995-10-10

    申请号：US102041

    申请日：1993-08-04

    Applicant: Takao Kuwabara ,  Ezo Kita ,  Isao Yokoyama ,  Hiroto Nakagawa ,  Yasuteru Oono

    Inventor： Takao Kuwabara ,  Ezo Kita ,  Isao Yokoyama ,  Hiroto Nakagawa ,  Yasuteru Oono

    IPC: F03B15/04 ,  F03B15/02 ,  F03B15/08 ,  F04B49/06 ,  F04D15/00 ,  F04D15/02 ,  G01H17/00

    CPC classification number: F04D15/029 ,  F04B49/065 ,  F04D15/0027 ,  F04D15/0066 ,  Y02E10/226

    Abstract: A method of detecting a counterflow in a pump comprises providing with detecting means for detecting variations in the discharge pressure of the pump and signal analyzing means for analyzing oscillation components contained in an output signal from the pressure detecting means, and detecting the pump's operating point to have entered a counterflow characteristic operation region when a waveform of the detection signal generated in association with the variations in the discharge pressure of the pump exhibits a predetermined spectrum distribution. Further, when it is detected that the operating point enters a counterflow characteristic operation region, the escape from that region is performed by temporally throttling the guide vane and temporally increasing the rotating speed.

    Abstract translation: 一种在泵中检测逆流的方法，包括提供检测装置，用于检测泵的排出压力的变化;以及信号分析装置，用于分析包含在来自压力检测装置的输出信号中的振荡分量，并且检测泵的工作点 当与泵的排出压力的变化相关联地生成的检测信号的波形呈现预定的频谱分布时，进入逆流特性操作区域。 此外，当检测到工作点进入逆流特性操作区域时，通过对导向叶片进行暂时节流并且暂时提高转速来执行从该区域的逸出。

    Vertical centrifugal hydraulic pump assembly
    13.
    发明授权
    Vertical centrifugal hydraulic pump assembly 失效
    垂直离心液压泵组件

    公开(公告)号：US5201633A

    公开(公告)日：1993-04-13

    申请号：US690145

    申请日：1991-04-23

    Applicant: Jean C. Peu

    Inventor： Jean C. Peu

    IPC: F04D1/06 ,  F04D15/00 ,  F04D15/02

    CPC classification number: F04D15/0083 ,  F04D1/066 ,  F04D15/029 ,  Y10T137/789 ,  Y10T137/86163

    Abstract: A vertical centrifugal hydraulic pump assembly is provided fitted with at least one replaceable pack incorporating the centrifugal hydraulic elements of the pump, the pack being clamped between two flanged end plates and mounted vertically in a receiving bore of a pump body, the base region of the receiving bore housing a flat annular non-return valve fitted between the inner wall of the bore and the outer wall of a central inlet connector, the valve opening in the direction of delivery of the pump.

    Abstract translation: 垂直离心液压泵组件设置有至少一个包含泵的离心液压元件的可更换的组件，该组件被夹在两个凸缘端板之间并垂直安装在泵体的接收孔中， 接收孔容纳安装在孔的内壁和中心入口连接器的外壁之间的平坦的环形止回阀，该阀开口在泵的输送方向上。

    Sump pump control system
    14.
    发明授权
    Sump pump control system 失效
    水泵控制系统

    公开(公告)号：US4222711A

    公开(公告)日：1980-09-16

    申请号：US917858

    申请日：1978-06-22

    Applicant: Thomas J. Mayer

    Inventor： Thomas J. Mayer

    IPC: F04B49/06 ,  F04D15/02 ,  F04B49/00

    CPC classification number: F04D15/029 ,  F04B49/06 ,  F04D13/068 ,  F04D15/0218

    Abstract: An AC driven pump and a DC driven pump are positioned in a sump and respectively energized as the liquid in the sump reaches two different levels, the DC driven pump being automatically tested for operation after every predetermined number of pumping cycles of the AC driven pump.

    Abstract translation: 交流驱动泵和直流驱动泵定位在贮槽中，并且随着贮槽中的液体达到两个不同的水平，分别被激励，直流驱动泵在AC驱动泵的每预定数量的泵送循环之后被自动测试。

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