公开(公告)号：US20210233377A1

公开(公告)日：2021-07-29

申请号：US17054438

申请日：2019-05-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Christian SCHOU ,  Ole Hejn PJENGAARD ,  Carsten Skovmose KALLESØE

IPC: G08B21/18 ,  E03F5/22

Abstract: An alarm management module (13) is for a wastewater pumping station that includes at least one pump (9a, 9b) arranged for pumping wastewater out of a wastewater pit (1). The alarm management module (13) is configured to process at least one level variable (h) indicative of a filling level of the wastewater pit (1) and at least one capacity variable (p %, P %, C %) indicative of a pumping capacity of the wastewater pumping station. The alarm management module (13) is configured to trigger an intervention alarm only if all of the following conditions are met: a) the at least one level variable (h) is at or above a predetermined alarm level threshold (hm), b) the at least one level variable (h) is increasing, and c) the at least one capacity variable (p %, P %, C %) is below a capacity threshold.

公开(公告)号：US20210215158A1

公开(公告)日：2021-07-15

申请号：US17054419

申请日：2019-05-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Christian SCHOU ,  Christian Robert DAHL JACOBSEN ,  Carsten Skovmose KALLESØE

IPC: F04D15/00 ,  F04D13/06 ,  F04D13/12

Abstract: A monitoring module (13) identifies an operating scenario in a wastewater pumping station, with at least one pump (9a, 9b) arranged for pumping wastewater out of a wastewater pit (1) into a pipe (11). The monitoring module (13) is configured to process at least one load-dependent pump variable indicative of how the at least one pump (9a, 9b) operates and at least one model-based pipe parameter indicative of how the wastewater flows through the pipe (11) and/or the at least one pump (9a, 9b). The monitoring module is configured to identify an operating scenario in the wastewater pumping station by selecting an operating scenario from a group of predefined operating scenarios dependent on at least one first criterion that is based on the at least one load-dependent pump variable and at least one second criterion that is based on the at least one model-based pipe parameter.

公开(公告)号：US20170225982A1

公开(公告)日：2017-08-10

申请号：US15428814

申请日：2017-02-09

Applicant: GRUNDFOS HOLDING A/S

Inventor： Bruno KIILERICH ,  Christian SCHOU ,  Martin LYNGSØ

IPC: C02F1/68 ,  C02F1/00

CPC classification number: C02F1/686 ,  C02F1/008 ,  C02F2101/101 ,  C02F2209/001 ,  C02F2209/003 ,  C02F2209/26 ,  C02F2209/265 ,  C02F2209/40 ,  C02F2307/08 ,  E03F5/22 ,  E03F2201/20

Abstract: A unit (8) is intended for treating waste water. It includes a well (9) with an inlet conduit connector (21) and with an outlet conduit connector (22) at the outside of the well (9). The unit further includes a connecting conduit (20) inside the well (9). The connecting conduit (20) connects the inlet conduit connector (21) to the outlet conduit connector (22). There is at least one storage tank (13) inside the well (9) for a liquid chemical and a metering pump (18) inside the well (9) for pumping the chemical from the storage tank (13) into the connecting conduit (20). A control device (23) activates the metering pump according to a signal of a sensor (24) which senses a quantity of chemical element in the liquid flowing through the conduit (20).