EP 0731880 A1 19960918 - DEVICE FOR PREVENTING TURBULENCE AT PUMP INLETS
Title (en)
DEVICE FOR PREVENTING TURBULENCE AT PUMP INLETS
Title (de)
EINRICHTUNG ZUR VERHINDERUNG VON UNTERWASSERWIRBELN AN PUMPENEINLÄUFEN
Title (fr)
DISPOSITIF POUR EMPECHER LA FORMATION DE TOURBILLONS AUX ENTREES DE POMPES
Publication
Application
Priority
- DE 4340711 A 19931130
- EP 9403720 W 19941110
Abstract (en)
[origin: WO9515440A1] The subject matter of the invention is a low-complexity device for preventing turbulence arising at the base (6) and rear wall (3) of the inlet chamber (1) of a centrifugal pump. The device has a ridge (7) of any cross section running along the base (6) of the inlet chamber (1) and passing through the extended central axis (9) of the pump inlet (4). The height (h) and width (b) of the cross section and of the segments (x1 and x2) thereof on either side of the extended central axis (9) of the pump inlet (4) are defined by reference to the diameter (D) of the pump inlet (4) as follows: a) 0,055 < h/D < 0,29; b) 0,045 < b/D < 0,39; c) 0,45 < x1/D < INFINITY ; d) 0,45 < x2/D < INFINITY .
IPC 1-7
IPC 8 full level
F04D 29/42 (2006.01); F04D 29/66 (2006.01)
CPC (source: EP)
F04D 29/4273 (2013.01); F04D 29/688 (2013.01); F04D 29/708 (2013.01)
Citation (search report)
See references of WO 9515440A1
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
DE 4340711 A1 19950601; CN 1051359 C 20000412; CN 1131453 A 19960918; DE 59406462 D1 19980820; EP 0731880 A1 19960918; EP 0731880 B1 19980715; WO 9515440 A1 19950608
DOCDB simple family (application)
DE 4340711 A 19931130; CN 94193425 A 19941110; DE 59406462 T 19941110; EP 9403720 W 19941110; EP 95900701 A 19941110