EP0259313B1 - Kreiselpumpengehäuse - Google Patents

Kreiselpumpengehäuse Download PDF

Info

Publication number
EP0259313B1
EP0259313B1 EP86902795A EP86902795A EP0259313B1 EP 0259313 B1 EP0259313 B1 EP 0259313B1 EP 86902795 A EP86902795 A EP 86902795A EP 86902795 A EP86902795 A EP 86902795A EP 0259313 B1 EP0259313 B1 EP 0259313B1
Authority
EP
European Patent Office
Prior art keywords
flange
pump
casing
centrifugal pump
pump intake
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
Application number
EP86902795A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0259313A1 (de
Inventor
Jörg STARKE
Rolf Scherer
Renzo Ghiotto
Primo Lovisetto
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
Lowara SRL
Original Assignee
KSB AG
Klein Schanzlin and Becker AG
Lowara SRL
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, Klein Schanzlin and Becker AG, Lowara SRL filed Critical KSB AG
Priority to AT86902795T priority Critical patent/ATE39973T1/de
Publication of EP0259313A1 publication Critical patent/EP0259313A1/de
Application granted granted Critical
Publication of EP0259313B1 publication Critical patent/EP0259313B1/de
Expired legal-status Critical Current

Links

Images

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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4266—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps made of sheet metal

Definitions

  • the invention relates to a centrifugal pump housing according to the preamble of claim 1.
  • Centrifugal pump housings of this type are firstly loaded by external pipeline forces and secondly they are subjected to high internal pressures.
  • the invention is therefore based on the object of developing a shape for a centrifugal pump housing designed as a sheet metal construction which remains stable under the influence of high internal pressures. This object is achieved in accordance with the characterizing part of the main claim.
  • the inventive integration of the suction-side connection flange into the housing shell results in a spherical or arcuate course of the pressure-receiving housing between the pressure-side fastening flange and the connection point of the suction line. This creates a housing that is highly protected against deformation.
  • the bead-like free spaces that are necessary for the assembly of the flange connection screws require a further additional stiffening of the housing shell.
  • An embodiment of the invention provides that the bead-like free spaces are provided with disk-shaped counter bearings in the area of the suction-side connecting flange. This embodiment is used in those cases in which the nuts of the flange screw connections are arranged in these bead-shaped free spaces. Because of the counter bearing, the flanges of the suction line to be connected and the suction socket integrated in the housing shell can then be connected to one another.
  • a separate ring flange is connected to the housing shell in the area of the suction-side connecting flange.
  • the housing shell here has a shoulder on which an annular flange lies flush and is firmly connected to the housing shell.
  • This ring flange which can also be designed as an individual part made of sheet metal, brings about a further stiffening of the housing shell.
  • a further embodiment of the invention provides that the housing shell is provided with an insert which forms the suction nozzle and which provides a gap seal with the impeller.
  • This insert which can be inserted into the housing shell from the pressure side, for example, can be produced as a simple tubular part. Depending on its design, it can interact directly with the suction mouth of the impeller and thus form a gap seal, or it can accommodate an appropriately shaped split ring that interacts with the suction mouth of the impeller.
  • the housing shell is provided with a one-part or multi-part insert which forms the suction nozzle and / or the wheel side space on the suction side.
  • This measure can serve to improve the hydraulic properties within the housing shell, on the other hand it also offers the possibility of further stiffening the housing shell.
  • a further embodiment of the invention works, according to which stiffening means are arranged within the housing between the suction nozzle and the space surrounding the suction nozzle.
  • These can be appropriately designed sheet metal parts which, for example, extend between the split ring area and the bead-like free spaces.
  • the space inside the housing shell and surrounding the suction nozzle can just as well be filled with appropriate potting materials.
  • These can be of a metallic type, but it is also possible to use appropriate plastics.
  • a housing shell which is provided with an annular flange.
  • the housing shell 1 is provided on the pressure side with a mounting flange 2, which ensures the connection of the housing shell with a bearing block or block motor, not shown.
  • a stylized representation of an impeller 3 in radial design is shown within the housing shell.
  • the housing shell 1 extends from the pressure-side mounting flange 2 in an approximately arc shape to the suction-side connection flange 4. This is formed by a sealing surface 5, above which beads-like free spaces 6 are stamped into the housing shell, which in this exemplary embodiment for receiving nuts 7 for not shown in detail Flange screws are provided.
  • the free spaces have a size that allows the nuts 7 to be held with an appropriate tool.
  • a disk-shaped counter bearing 8 is welded into each free space 6 in the area of the nuts 7.
  • the suction nozzle 9 arranged due to this type of construction within the housing shell 1 is provided with a split ring 10 into which the suction mouth of the impeller 3 is immersed.
  • the housing shell 1, including the flange sealing surface 5, is designed as a one-piece sheet metal part.
  • FIG. 2 has a suction nozzle 9 which, in order to improve the hydraulic properties within the pressure chamber 11, is made in one piece with an insert 12 that reduces the wheel side chamber on the suction side is trained.
  • This insert can be inserted into the housing from the pressure side without difficulty and can be connected to the housing shell 1 on the outer and inner circumference by weld seams 13, 14. Appropriate spot welds are also conceivable.
  • FIG. 3 shows a front view of the housing shell designed according to the invention and shows how the disk-shaped counter bearing 8 closes the bead-like free spaces 6 in the area of the fastening nuts 7.
  • Fig. 4 shows a housing shell 1, in which the suction-side connection flange is formed by a separate ring flange 15 which lies flush with the rear surface of the housing shell 1.
  • the nuts 7 shown here lie in the bead-like free spaces 6.
  • the ring flange 15 can be firmly connected to the housing shell 1 by a circumferential weld seam 17 or appropriately attached spot welds. Depending on the material thickness, additional stiffening of the entire housing is achieved.
  • the suction nozzle 9 is in turn designed as a simple tubular individual part provided with a split ring.
  • FIG. 5 shows a variant which deviates from FIG. 4 and which, like FIG. 2, has as its object an insert 12 which reduces the wheel-side space and which is formed in one piece with the suction nozzle 9.
  • an insert 12 which reduces the wheel-side space and which is formed in one piece with the suction nozzle 9.
  • additional stiffening means can be support elements (not shown here) which connect the area of the bead-like free spaces 6 located within the housing shell 1 to the area of the split ring 10. Filling with a correspondingly rigid casting compound, which improves the compressive strength of the housing, can just as well be.
  • this housing is extremely resistant to pressure loads both from the inside and from the outside.
  • FIG. 6 again shows a front view of the housing shell 1 corresponding to FIG. 3, from which it can be seen how the ring flange 15 acts in the area of the bead-like free spaces 6 as a counter bearing for the nuts 7. infoige of the flush contact of the ring flange 15 on the housing shell 1, the ring flange 15 is thus a supporting part of the housing.
  • the arcuate course of the housing shell 1, which is also spherical, conical or, as shown in the exemplary embodiments, from a combination thereof, has a very high strength against the possible pressure forces that occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP86902795A 1985-05-17 1986-05-09 Kreiselpumpengehäuse Expired EP0259313B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86902795T ATE39973T1 (de) 1985-05-17 1986-05-09 Kreiselpumpengehaeuse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3517827 1985-05-17
DE19853517827 DE3517827A1 (de) 1985-05-17 1985-05-17 Kreiselpumpengehaeuse

Publications (2)

Publication Number Publication Date
EP0259313A1 EP0259313A1 (de) 1988-03-16
EP0259313B1 true EP0259313B1 (de) 1989-01-11

Family

ID=6271012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86902795A Expired EP0259313B1 (de) 1985-05-17 1986-05-09 Kreiselpumpengehäuse

Country Status (7)

Country Link
EP (1) EP0259313B1 (ja)
JP (1) JPS63500817A (ja)
CN (1) CN1004645B (ja)
CA (1) CA1266797A (ja)
DE (2) DE3517827A1 (ja)
IN (1) IN165644B (ja)
WO (1) WO1986006800A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4329019A1 (de) * 1993-08-28 1995-03-02 Klein Schanzlin & Becker Ag Kreiselpumpengehäuse in Blechbauweise

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68921203T2 (de) * 1988-02-29 1995-10-12 Ebara Corp Anschlussstück für leitungen in einer pumpe.
JP2808838B2 (ja) * 1990-06-29 1998-10-08 株式会社荏原製作所 遠心ポンプケーシング
JP2676450B2 (ja) * 1991-01-11 1997-11-17 株式会社荏原製作所 板金製ポンプケーシング
IT1248200B (it) * 1991-01-11 1995-01-05 Ebara Corp Cassa in lamiera metallica per pompa centrifuga
DE19838798C2 (de) * 1998-08-26 2002-08-29 Ind Tech Res Inst Pumpengehäuse aus einem Metallblech und Verfahren zu seiner Herstellung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844100A (en) * 1954-07-06 1958-07-22 Kurt J Heinicke Sheet metal centrifugal pump
GB1092533A (en) * 1964-02-27 1967-11-29 Speedwell Res Ltd Improvements relating to pump casings
DK131438B (da) * 1973-08-31 1975-07-14 Danske Mejeriers Maskinfabrik Centrifugalpumpe.
GB2010434B (en) * 1977-12-16 1982-06-30 Rolls Royce Flanged joint structure for composite materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4329019A1 (de) * 1993-08-28 1995-03-02 Klein Schanzlin & Becker Ag Kreiselpumpengehäuse in Blechbauweise
DE4329019C2 (de) * 1993-08-28 1999-11-04 Ksb Ag Kreiselpumpengehäuse in Blechbauweise

Also Published As

Publication number Publication date
CN86103310A (zh) 1986-11-12
CA1266797A (en) 1990-03-20
IN165644B (ja) 1989-12-02
DE3517827C2 (ja) 1988-07-14
DE3661759D1 (en) 1989-02-16
WO1986006800A1 (en) 1986-11-20
EP0259313A1 (de) 1988-03-16
JPH0361040B2 (ja) 1991-09-18
CN1004645B (zh) 1989-06-28
DE3517827A1 (de) 1986-11-20
JPS63500817A (ja) 1988-03-24

Similar Documents

Publication Publication Date Title
DE69308057T2 (de) Pumpengehäuse in Blechbauweise
DE69209854T2 (de) Pumpengehäuse in Blechbauweise
DE69329657T2 (de) Pumpengehäuse in Blechbauweise
DE3517828C2 (ja)
EP0259313B1 (de) Kreiselpumpengehäuse
DE69518815T2 (de) Seitenströmungspumpe
DE3517499A1 (de) Laufrad
DE3622963A1 (de) Pumpe, vorzugsweise behaelterpumpe
DE2852852C2 (de) Kolbenpumpe, insbesondere Radialkolbenpumpe
DE4303328C2 (de) Gerotorpumpe zum Fördern von Fluid, insbesondere als Kraftstoff-Förderaggregat für Kraftfahrzeuge
DE19908143C2 (de) Geschmiedetes Kreiselpumpengehäuse
EP0588258B1 (de) Mehrteiliges Stufengehäuse
EP0692075A1 (de) Pumpenstufe in blechbauweise
DE2134311A1 (de) Förderpumpe, insbesondere Servolenkungspumpe
DE3707803C2 (ja)
DE3628177A1 (de) Kruemmergehaeuse fuer stroemungsmaschinen mit radialer zustroemung
EP2228538A1 (de) Mehrstufiges Kreiselpumpenaggregat
DE4011475A1 (de) Topfgehaeuse
DE19653936A1 (de) Kreiselpumpengehäuse
DE102006030669B4 (de) Messeinsatz für Flüssigkeitszähler
DE4101611C2 (de) Kreiselpumpengehäuse in Blechbauweise
DE7726026U1 (de) Spaltrohr fuer spaltrohrpumpe
DE4329019C2 (de) Kreiselpumpengehäuse in Blechbauweise
DE102013207321A1 (de) Pumpeneinheit
DE1476993C (de) Kältekompressor mit Haubenmotor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19871105

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19880603

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: LOWARA S.P.A.

Owner name: KSB AKTIENGESELLSCHAFT

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 39973

Country of ref document: AT

Date of ref document: 19890115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3661759

Country of ref document: DE

Date of ref document: 19890216

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19890531

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 86902795.3

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20030422

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20030423

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030430

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030520

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030521

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20030522

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20030613

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030626

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040509

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040510

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040531

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040531

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040531

BERE Be: lapsed

Owner name: *LOWARA S.P.A.

Effective date: 20040531

Owner name: *KSB A.G.

Effective date: 20040531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041201

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041201

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040509

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20041201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050509