公开(公告)号：US20150148972A1

公开(公告)日：2015-05-28

申请号：US14608834

申请日：2015-01-29

Applicant: ABB TECHNOLOGY AG

Inventor： Marcel BLAUMANN ,  Rüdiger FRANKE ,  Olaf REISMANN

IPC: F04D15/02 ,  G05B15/02 ,  G06F17/10 ,  F04D1/04

CPC classification number: F04D15/029 ,  F04D1/04 ,  F04D13/14 ,  G05B15/02 ,  G06F17/10

Abstract: A device and a method for operating multiple centrifugal pumps are disclosed. The device can include a communication interface for receiving as at least one input information, an instantaneous pressure drop and an instantaneous flow rate per pump or speed of the centrifugal pumps, and for transmitting output information to the centrifugal pumps, where the output information reflects a reference value for the number of centrifugal pumps to be operated in parallel. The device can contain a data storage unit and a processing unit, which determine from input information and additional information an instantaneous efficiency, a first expected efficiency under the assumption that the actual number is reduced by one, and a second expected efficiency under the assumption that the actual number is increased by one, and which can generate the reference value depending on which of the instantaneous or first expected or second expected efficiencies has a highest value.

Abstract translation: 公开了一种用于操作多个离心泵的装置和方法。 该装置可以包括通信接口，用于接收作为至少一个输入信息的瞬时压降和每个泵的瞬时流量或离心泵的速度，并且用于将输出信息发送到离心泵，其中输出信息反映 要并联运行的离心泵数量的参考值。 该设备可以包含数据存储单元和处理单元，其从输入信息和附加信息确定即时效率，在假定实际数量减少1的情况下的第一预期效率，以及假定第二预期效率 实际数量增加1，并且其可以根据瞬时或第一预期效率或第二预期效率中的哪一个具有最高值来生成参考值。