Global Patent Index - EP 2137413 A1

EP 2137413 A1 20091230 - SEWAGE PUMP BLOCKAGE DETECTION

Title (en)

SEWAGE PUMP BLOCKAGE DETECTION

Title (de)

ERFASSUNG DER VERSTOPFUNG EINER ABWASSERPUMPE

Title (fr)

DÉTECTION DU BLOCAGE D'UNE POMPE DE PUISARD

Publication

EP 2137413 A1 20091230 (EN)

Application

EP 08718794 A 20080318

Priority

  • GB 2008000955 W 20080318
  • GB 0706115 A 20070329

Abstract (en)

[origin: GB2447867A] A method and control unit for monitoring a pump 102 which operates to pump sewage from a wet well, in which the current 204 drawn by the pump is detected along with the speed 202 of operation of the pump and the wet well level 203. The detected values are compared with stored values in a look up table 205to determine whether the pump is blocked. The lookup table may be configured to conform to the characteristics of a particular pumping station. The lookup table may comprise upper and lower threshold values for each parameter. In an embodiment any parameter falling below a predetermined threshold is indicative of a blockage. In a further embodiment the three parameters falling below a threshold is indicative of a blockage. The stored parameters may be rate of change parameters of the measured parameters. In a still further embodiment if a blockage is detected a self clean routine is initiated. An alarm may be given if it is determined that the pump is still blocked.

IPC 8 full level

F04D 15/02 (2006.01)

CPC (source: EP GB)

F04B 49/00 (2013.01 - GB); F04D 15/0066 (2013.01 - EP); F04D 15/0088 (2013.01 - EP); F04D 15/0209 (2013.01 - EP); F04D 15/0236 (2013.01 - EP); F04D 15/0245 (2013.01 - GB); F04D 15/0281 (2013.01 - EP)

Citation (search report)

See references of WO 2008119932A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DOCDB simple family (publication)

GB 0706115 D0 20070509; GB 2447867 A 20081001; GB 2447867 B 20100127; AU 2008234704 A1 20081009; EP 2137413 A1 20091230; US 2010166569 A1 20100701; WO 2008119932 A1 20081009

DOCDB simple family (application)

GB 0706115 A 20070329; AU 2008234704 A 20080318; EP 08718794 A 20080318; GB 2008000955 W 20080318; US 59391208 A 20080318