EP1085212B1 - High-pressure centrifugal pump - Google Patents

High-pressure centrifugal pump Download PDF

Info

Publication number
EP1085212B1
EP1085212B1 EP00850140A EP00850140A EP1085212B1 EP 1085212 B1 EP1085212 B1 EP 1085212B1 EP 00850140 A EP00850140 A EP 00850140A EP 00850140 A EP00850140 A EP 00850140A EP 1085212 B1 EP1085212 B1 EP 1085212B1
Authority
EP
European Patent Office
Prior art keywords
pressure
pump
vanes
inlet
pressure step
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00850140A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1085212A3 (en
EP1085212A2 (en
Inventor
Ulf Arbeus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ITT Manufacturing Enterprises LLC
Original Assignee
ITT Manufacturing Enterprises LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ITT Manufacturing Enterprises LLC filed Critical ITT Manufacturing Enterprises LLC
Publication of EP1085212A2 publication Critical patent/EP1085212A2/en
Publication of EP1085212A3 publication Critical patent/EP1085212A3/en
Application granted granted Critical
Publication of EP1085212B1 publication Critical patent/EP1085212B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2211—More than one set of flow passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F04D17/12—Multi-stage pumps

Definitions

  • the invention concerns a high-pressure machine, namely a pump for liquids or a compressor for obtaining a media transport under high pressure as specified in the preamble of claim 1.
  • a pump or compressor is known from e.g. CH-A-93071 or DE-A-2115330.
  • a pump of the centrifugal type When pumping liquids to high levels where consequently a high pressure is needed, a pump of the centrifugal type is to prefer.
  • a pump comprises a pump impeller on a rotating shaft, said impeller being designed with a hub and a circular disc provided with one or several impeller vanes.
  • the liquid enters in an axial direction in the center and leaves the impeller at the periphery.
  • a pump housing surrounding the impeller transforms the kinetic energy to pressure energy which obtains the transport to a higher level.
  • the purpose of the invention is thus to obtain a pump or a compressor having more than two pressure steps having a very high efficiency thanks to the fact that the disc losses are minimized.
  • the device according to the invention is also characterized in that the design is very compact, easy to mount and being possible to adapt with regard to axial force and seal pressure.
  • Fig 1 shows a an axial cut through a pump according to the invention
  • Fig 2 shows the cut according to Fig 1 inserted in a view over a submersible pump.
  • FIG. 1 stands for a rotary shaft
  • 2 a pump impeller hub having a disc 3.
  • 4, 5, 6 and 7 stand for impeller vanes
  • 8 and 9 cover discs and 10 a part of a pump housing comprising walls 11 and 12 opposing the impeller 13, 14, 15, 16 and 17 symbolize seals
  • 18, 19 stand for inlets to the pressure steps.
  • 22, 23, 24 and 25 stand for diffusors in the pump steps.
  • 26, 27 and 28 stand for flow conduits, 29 and 30 inlet and outlet respectively for the pump and 31 finally, a motor unit.
  • the high-pressure pump comprises a pump housing 10 within which a rotating hub 2 with a connected disc 3 is arranged.
  • the disc 3 is on each side provided with vanes 5 and 6 respectively, each group of vanes being provided with a cover disc 8 and 9 respectively and creating a double-sided closed pump impeller.
  • the cover discs 8 and 9 are on their respective opposite sides provided with additional vanes which form another double sided pump impeller together with the pump housing walls 11 and 12 respectively. In this way a four-step pump impeller is created having two closed and two open channels.
  • the pump operates in the following way: the liquid is sucked in through the inlet 29 and flows to the inlet 18 of the first pressure step.
  • This step is formed by the vanes 4, the cover disc 8 and the pump housing wall 11.
  • a flow conduit 26 goes from the diffusor 22 of said first pressure step to the inlet 19 of a second pressure step, said second step being formed by the vanes 5, the underside of the hub disc 3 and the cover disc 8.
  • a second flow conduit 27 goes from the diffusor 23 of said second pressure step to the inlet 20 of a third pressure step, said third step being formed by the vanes 6, the upside of the hub disc 3 and the cover disc 9.
  • a third flow conduit 28 goes from the diffusor 24 of said third pressure step to the inlet 21 of a fourth pressure step, said fourth step being formed by the vanes 7, the cover disc 9 and the pump housing wall 12. Finally the liquid leaves the pump via the diffusor 25 of the fourth pressure step through the inlet 30.
  • the pump according to the invention provides a number of advantages when compared with conventional high-pressure pumps having one or several pressure steps.
  • the efficiency is very high thanks to the fact that several pressure steps bring about a more favorable specific rotation speed and that the disc losses are reduced considerably.
  • the mounting of the pump is much simpler in a comparison with mounting of conventional multi-step pumps.
  • trimming of the very compact pump means possibilities to reduce axial forces as well as seal pressures thanks to the symmetrical design.
  • the invention is not limited to pumps for liquids, but is also possible to apply for pressurizing of gaseous media.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP00850140A 1999-09-15 2000-08-23 High-pressure centrifugal pump Expired - Lifetime EP1085212B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9903278A SE521399C2 (sv) 1999-09-15 1999-09-15 Rotodynamisk högtrycksmaskin
SE9903278 1999-09-15

Publications (3)

Publication Number Publication Date
EP1085212A2 EP1085212A2 (en) 2001-03-21
EP1085212A3 EP1085212A3 (en) 2002-05-29
EP1085212B1 true EP1085212B1 (en) 2006-03-08

Family

ID=20416981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00850140A Expired - Lifetime EP1085212B1 (en) 1999-09-15 2000-08-23 High-pressure centrifugal pump

Country Status (11)

Country Link
EP (1) EP1085212B1 (es)
JP (1) JP2001099091A (es)
AR (1) AR026878A1 (es)
AT (1) ATE319934T1 (es)
AU (1) AU762289B2 (es)
BR (1) BR0004211A (es)
CA (1) CA2319607C (es)
DE (1) DE60026490T2 (es)
MX (1) MXPA00008931A (es)
SE (1) SE521399C2 (es)
ZA (1) ZA200004443B (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0916901D0 (en) * 2009-09-25 2009-11-11 Dynamic Boosting Systems Ltd Diffuser

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE155337C (es) *
CH93071A (fr) * 1918-11-01 1922-02-16 Johnston Frame William Perfectionnement dans les ventilateurs et les pompes centrifuges à plusieurs étages.
DE345856C (de) * 1920-02-20 1921-12-17 Bbc Brown Boveri & Cie Kreiselmaschine zum Verdichten und Foerdern von Gasen bzw. Fluessigkeiten mit mehreren hintereinander geschalteten Stufen
CH252609A (de) * 1945-01-13 1948-01-15 Sulzer Ag Mehrstufiger Verdichter.
US3102680A (en) * 1961-06-27 1963-09-03 Sam F Fogleman Multistage centrifugal gas compressor
DE2115330A1 (de) * 1971-03-30 1972-10-19 Demag Ag Mehrstufiger Verdichter radialer oder halbradialer Bauart

Also Published As

Publication number Publication date
MXPA00008931A (es) 2004-10-15
AU5941800A (en) 2001-03-22
AR026878A1 (es) 2003-03-05
CA2319607A1 (en) 2001-03-15
BR0004211A (pt) 2001-04-10
CA2319607C (en) 2003-11-04
DE60026490D1 (de) 2006-05-04
AU762289B2 (en) 2003-06-19
ATE319934T1 (de) 2006-03-15
ZA200004443B (en) 2001-05-22
SE9903278L (sv) 2001-03-16
EP1085212A3 (en) 2002-05-29
DE60026490T2 (de) 2006-10-12
EP1085212A2 (en) 2001-03-21
JP2001099091A (ja) 2001-04-10
SE9903278D0 (sv) 1999-09-15
SE521399C2 (sv) 2003-10-28

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