Global Patent Index - EP 2350458 A1

EP 2350458 A1 20110803 - METHOD FOR OPERATING A MULTISTAGE COMPRESSOR

Title (en)

METHOD FOR OPERATING A MULTISTAGE COMPRESSOR

Title (de)

VERFAHREN ZUM BETRIEB EINES MEHRSTUFIGEN VERDICHTERS

Title (fr)

PROCÉDÉ PERMETTANT DE FAIRE FONCTIONNER UN COMPRESSEUR À ÉTAGES MULTIPLES

Publication

EP 2350458 A1 20110803 (DE)

Application

EP 09799295 A 20091123

Priority

  • EP 2009065613 W 20091123
  • DE 102008058799 A 20081124

Abstract (en)

[origin: WO2010058002A1] The invention relates to a method for operating a multistage compressor (CO), comprising monitoring the pump limit (SL), wherein at least a first measurement parameter measured during operation is compared to a reference parameter, said reference parameter being characteristic of reaching the pump limit (SL) or a specific distance of the operating point (OP1, OP2) from the pump limit (SL). The invention further relates to a multistage compressor. In order to enlarge the operating range without risking safety, it is proposed that each stage (ST1 to ST4) be monitored individually for the onset of the pump.

IPC 8 full level

F04D 19/02 (2006.01); F04D 27/00 (2006.01); F04D 29/58 (2006.01)

CPC (source: EP US)

F04D 17/12 (2013.01 - EP US); F04D 19/02 (2013.01 - EP US); F04D 27/001 (2013.01 - EP US); F04D 29/5826 (2013.01 - EP US)

Citation (search report)

See references of WO 2010058002A1

Citation (examination)

  • JP S5746088 A 19820316 - HITACHI LTD
  • US 4807150 A 19890221 - HOBBS JAMES W [US]
  • SOCIETY OF PETROLEUM ENGINEERS: "Compressors", 17 September 2013 (2013-09-17), pages 1 - 11, XP055139687, Retrieved from the Internet <URL:http://petrowiki.org/Compressors#Polytropic_head> [retrieved on 20140911]
  • PETER C RASMUSSEN ET AL: "Centrifugal Compressor Applications -- Upstream and midstream", 1 January 2009 (2009-01-01), XP055139676, Retrieved from the Internet <URL:http://turbolab.tamu.edu/proc/turboproc/T38/ch16_Rasmussen.pdf> [retrieved on 20140911]

Citation (third parties)

Third party :

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 MK MT NL NO PL PT RO SE SI SK SM TR

DOCDB simple family (publication)

WO 2010058002 A1 20100527; CN 102224346 A 20111019; CN 102224346 B 20151125; DE 102008058799 A1 20100602; DE 102008058799 B4 20120426; EP 2350458 A1 20110803; US 2011229303 A1 20110922; US 2014334911 A1 20141113; US 8939704 B2 20150127

DOCDB simple family (application)

EP 2009065613 W 20091123; CN 200980146852 A 20091123; DE 102008058799 A 20081124; EP 09799295 A 20091123; US 200913130619 A 20091123; US 201414337794 A 20140722