(19)
(11) EP 3 332 128 A1

(12)

(43) Date of publication:
13.06.2018 Bulletin 2018/24

(21) Application number: 16753861.0

(22) Date of filing: 02.08.2016
(51) International Patent Classification (IPC): 
F04D 13/14(2006.01)
F04D 29/12(2006.01)
(86) International application number:
PCT/EP2016/068407
(87) International publication number:
WO 2017/021399 (09.02.2017 Gazette 2017/06)
(84) Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD

(30) Priority: 04.08.2015 IT UB20152842

(71) Applicant: Nuovo Pignone Tecnologie SrL
50127 Florence (IT)

(72) Inventors:
  • MILONE, Fabrizio
    50127 Florence (IT)
  • GRIMALDI, Alberto
    50127 Florence (IT)
  • VERONICO, Giuseppe
    50127 Florence (IT)

(74) Representative: Illingworth-Law, William Illingworth 
GPO Europe GE International Inc. The Ark 201 Talgarth Road Hammersmith
London W6 8BJ
London W6 8BJ (GB)

   


(54) PUMPING SYSTEM WITH BARRIER FLUID DELIVERY CIRCUIT FOR DRY GAS SEALS