EP0739452A1 - Roue mobile de pompe centrifuge en tole avec orifices de decharge - Google Patents

Roue mobile de pompe centrifuge en tole avec orifices de decharge

Info

Publication number
EP0739452A1
EP0739452A1 EP95906291A EP95906291A EP0739452A1 EP 0739452 A1 EP0739452 A1 EP 0739452A1 EP 95906291 A EP95906291 A EP 95906291A EP 95906291 A EP95906291 A EP 95906291A EP 0739452 A1 EP0739452 A1 EP 0739452A1
Authority
EP
European Patent Office
Prior art keywords
centrifugal pump
pocket
pump impeller
impeller
sheet metal
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.)
Granted
Application number
EP95906291A
Other languages
German (de)
English (en)
Other versions
EP0739452B1 (fr
Inventor
Christoph Jäger
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.)
KSB AG
Original Assignee
KSB AG
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 KSB AG filed Critical KSB AG
Publication of EP0739452A1 publication Critical patent/EP0739452A1/fr
Application granted granted Critical
Publication of EP0739452B1 publication Critical patent/EP0739452B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04D29/2222—Construction and assembly
    • 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
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
    • 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
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2272—Rotors specially for centrifugal pumps with special measures for influencing flow or boundary layer

Definitions

  • Centrifugal pump impeller made of sheet metal equipped with relief openings
  • the invention relates to a centrifugal pump impeller formed from sheet metal, which has relief openings arranged in the pressure-side cover disk.
  • the object on which the invention is based is to create a centrifugal pump impeller made of sheet metal, the relief openings of which can be produced with little effort direct the relief flow in a direction which has little effect on the flow in the impeller inlet.
  • the pockets can be shaped in a simple manner, optionally simultaneously with one or more further shaping measures for producing the impeller, accomplish.
  • the individual pocket can be formed by a bulge embossed into the cover plate from only one side or by two bulges lying opposite one another. The opening located at the raised end of a bulge or between two bulges can already arise when a pocket is formed, so that a further step is not necessary for this.
  • Fig. 1 is a partial view of a centrifugal pump impeller according to the invention shown in section, and in
  • FIG. 2 is a plan view of a relief opening of the impeller of FIG. 1, shown as a detail.
  • the centrifugal pump impeller 1 made of sheet metal is arranged with a hub 2 on a shaft, not shown.
  • the centrifugal pump impeller 1 has several over its circumference evenly distributed impeller blades 3, which are arranged between a front, suction-side cover plate 4 and a rear, pressure-side cover plate 5.
  • a plurality of pockets 6 Arranged in the pressure-side cover plate 5 are a plurality of pockets 6 distributed uniformly over the circumference, each of which is formed by two bulges 7 and 8 pressed into the cover plate 5 in the opposite direction.
  • the connection which is initially present between the bulges 7 and 8 is torn open, as a result of which an opening 9 is created.
  • the pocket 6 and the opening 9 are aligned so that the relief current flowing from the hub space 10 into the impeller inlet 11, shown here by arrow 12, has approximately the same direction as the main flow symbolized by an arrow 13 at the impeller inlet 11.
  • such a pocket can also be formed by a single bulge 7 or 8, each of which has the same shaping direction, as shown here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne une roue mobile de pompe centrifuge (1) en tôle possédant des orifices de décharge disposés dans le disque de recouvrement (5) côté refoulement et constitués par une poche ouverte (6) ménagée dans la tôle du disque de recouvrement (5). Grâce à leur forme, cette poche (6) et son orifice (9) dirigent le courant de décharge (12) dans un sens sensiblement identique à celui du courant principal (13).
EP95906291A 1994-01-12 1995-01-04 Roue mobile de pompe centrifuge en tole avec orifices de decharge Expired - Lifetime EP0739452B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4400633 1994-01-12
DE4400633A DE4400633A1 (de) 1994-01-12 1994-01-12 Mit Entlastungsöffnungen ausgestattetes Kreiselpumpenlaufrad aus Blech
PCT/EP1995/000016 WO1995019503A1 (fr) 1994-01-12 1995-01-04 Roue mobile de pompe centrifuge en tole avec orifices de decharge

Publications (2)

Publication Number Publication Date
EP0739452A1 true EP0739452A1 (fr) 1996-10-30
EP0739452B1 EP0739452B1 (fr) 1998-11-04

Family

ID=6507746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95906291A Expired - Lifetime EP0739452B1 (fr) 1994-01-12 1995-01-04 Roue mobile de pompe centrifuge en tole avec orifices de decharge

Country Status (4)

Country Link
EP (1) EP0739452B1 (fr)
DE (2) DE4400633A1 (fr)
DK (1) DK0739452T3 (fr)
WO (1) WO1995019503A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4561852B2 (ja) 2008-03-26 2010-10-13 株式会社日立プラントテクノロジー 羽根車
JP2013148075A (ja) * 2012-01-23 2013-08-01 Mitsubishi Heavy Ind Ltd 遠心式流体機械
KR20140108389A (ko) * 2013-02-26 2014-09-11 현대중공업 주식회사 밸런싱홀을 구비하는 원심 펌프

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE518179C (de) * 1929-09-20 1931-02-12 Hans Reinecke Entlastung der innerhalb der rueckseitigen Dichtungsringe der Laufraeder umlaufenderhydraulischer Maschinen befindlichen Raeume
FR972528A (fr) * 1948-05-05 1951-01-31 Cie Des Surchauffeurs Perfectionnements aux pompes centrifuges
US3632220A (en) * 1970-08-27 1972-01-04 Chrysler Corp Coolant pump
DE3517499A1 (de) * 1985-05-15 1986-11-20 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Laufrad
JPH05288803A (ja) * 1992-04-14 1993-11-05 Fujitsu Ltd Ｉｃトレー

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9519503A1 *

Also Published As

Publication number Publication date
WO1995019503A1 (fr) 1995-07-20
DE4400633A1 (de) 1995-07-13
EP0739452B1 (fr) 1998-11-04
DE59504143D1 (de) 1998-12-10
DK0739452T3 (da) 1999-07-19

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