公开(公告)号：US20250035120A1

公开(公告)日：2025-01-30

申请号：US18716469

申请日：2022-11-16

Applicant: GRUNDFOS HOLDING A/S

Inventor： Torben NIELSEN ,  Jesper Thørring DAMGAARD

IPC: F04D15/00 ,  G01H1/00

Abstract: Disclosed herein are embodiments of an apparatus for detecting hydraulic shock events in a fluid system, the apparatus comprising a vibration sensor operable to output a vibration sensor signal indicative of sensed vibrations of one or more components of the fluid system, and a processing unit configured to: obtain a vibration velocity signal from the vibration sensor signal, the vibration velocity signal being indicative of a vibration velocity of the one or more components of the fluid system; detect one or more peaks in the vibration velocity signal; and classify one or more of the detected peaks as a hydraulic shock event.

公开(公告)号：US20250020128A1

公开(公告)日：2025-01-16

申请号：US18716403

申请日：2022-11-16

Applicant: GRUNDFOS HOLDING A/S

Inventor： Torben NIELSEN ,  Jesper Thørring DAMGAARD

IPC: F04D15/00

Abstract: Disclosed herein are embodiments of an apparatus for detecting hydraulic shock events in a fluid system, the fluid system comprising a pump assembly, the pump assembly comprising a pump, in particular a centrifugal pump, and a pump motor, the apparatus comprising means for monitoring a pump speed of the pump and/or for monitoring a motor frequency; and a processing unit configured to detect a variation in the monitored pump speed and/or motor frequency; and detect a hydraulic shock event from the detected variation in the monitored pump speed and/or motor frequency.