EP1420166B1 - Boítier dotée d'un covercle pour une pompe centrifuge à haute pression - Google Patents

Boítier dotée d'un covercle pour une pompe centrifuge à haute pression Download PDF

Info

Publication number
EP1420166B1
EP1420166B1 EP20030405738 EP03405738A EP1420166B1 EP 1420166 B1 EP1420166 B1 EP 1420166B1 EP 20030405738 EP20030405738 EP 20030405738 EP 03405738 A EP03405738 A EP 03405738A EP 1420166 B1 EP1420166 B1 EP 1420166B1
Authority
EP
European Patent Office
Prior art keywords
pump
flange
sealing
pressure
housing
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
EP20030405738
Other languages
German (de)
English (en)
Other versions
EP1420166A1 (fr
Inventor
Wolfram Lienau
Paul Meuter
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.)
Sulzer Pumpen AG
Original Assignee
Sulzer Pumpen 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 Sulzer Pumpen AG filed Critical Sulzer Pumpen AG
Priority to EP20030405738 priority Critical patent/EP1420166B1/fr
Publication of EP1420166A1 publication Critical patent/EP1420166A1/fr
Application granted granted Critical
Publication of EP1420166B1 publication Critical patent/EP1420166B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F04D1/063—Multi-stage pumps of the vertically split casing type
    • 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
    • F04D29/08—Sealings
    • F04D29/086—Sealings especially adapted for liquid 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
    • 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

Definitions

  • the invention relates to a high-pressure centrifugal pump in a pot housing with a pressure lid and a use of this pump.
  • the pot housing pump is usually a multi-stage centrifugal pump in the the wheels "in line” (ie in series) or "back to back” on the shaft are arranged.
  • This pump can generate high pressures.
  • the rule is a drive unit on the low pressure side to the shaft coupled.
  • On the opposite side is the case through the Pressure lid completed.
  • the pressure lid has a flange, with the against the internal pressure, i. the pressure of a pumped liquid is sealed.
  • a pot-type pump of the "back to back" type which has two multi-stage, comprises centrifugal pumps arranged on a common shaft.
  • the object of the invention is to provide a pump with a sealing To provide pressure lid, in which the seal remains leak-free. These The object is achieved by the defined in claim 1 pump.
  • the high pressure centrifugal pump in a pot housing includes a Pressure lid (3).
  • This has a flange with a flange, with the pressure cap on a frontal and annular sealing surface of a Housing is secured by screwing.
  • the flange is through the Screwing on elastically deformed.
  • the sealing surface of the housing is in Area of a base zone of the flange on this with a second Sealing surface in contact.
  • the two sealing surfaces are in front of the Screwing on two at least approximately radially extending conical or annular surfaces. These two surfaces close a small angle ⁇ , which is in relation to a central axis outside opens. After screwing the flange are thanks to that elastic deformations, the two sealing surfaces pressed together and Thus, the angle between the sealing surfaces is equal to zero.
  • a pot housing pump 1 as shown in Fig. 1 is a pump of the type "back to back". It contains in a housing 2, a first part of the pump 1a and a second pump part 1b, which are offset by a common shaft 10 right or left in rotation. The drive end is indicated by an arrow 100 indicating the rotation. From a suction nozzle 21 at the drive end, a liquid to be conveyed passes through channels 11 in the sub-pump 1a, from which the liquid is transported at a mean pressure p L (200 to 500 bar) via further channels 12a, 12b to the drive remote end of the shaft, where it is deflected by a pressure cap 3 in the sub-pump 1b. After being transported through the second sub-pump 1b, the liquid exits from a centrally arranged discharge nozzle 22 out of the pump 1, wherein it has a final pressure of between approximately 400 and 1000 bar.
  • a pump of the "in-line” type which comprises only one centrifugal pump and in which the discharge nozzle is arranged at the end, ie at the pressure cover.
  • the pressure lid must seal against a pressure p L of 1000 bar.
  • the pressure cover 3 of the pump 1 has - see also Fig. 2 - a flange with a flange 4, which has a sealing function.
  • the pressure lid 3 carries in a profiled passage opening 31 a terminal Shaft bearings.
  • Installed in the pressure cap 3 is an axial thrust relief device and a shaft seal, with the one Liquid leakage into the environment is minimized by a pressure reduction.
  • the pressure cap 3 is on an end face and annular sealing surface 20 of the housing 2 screwed.
  • the flange 4 is elastically deformed when screwed so that the sealing surface 20 of the Housing 2 in the region of a base zone of the flange 4 on this with a second sealing surface 40 is in contact.
  • the two sealing surfaces 20, 40 lie before screwing on two at least approximately radially extending conical or annular surfaces, these two surfaces according to the invention include a small angle ⁇ with respect to a central axis 101 opens to the outside: see Fig. 3. Between the two sealing surfaces 20, 40 is thus a conical gap. The angle ⁇ this conical gap is a maximum of 1 °. After unscrewing the Flange 4 on the housing 2 are thanks to the elastic deformation of Flange 4, the two sealing surfaces 20, 40 pressed against each other: the conical gap is closed; the angle ⁇ between the sealing surfaces 20, 40 is zero in this state.
  • the sealing surface 20 of the housing 2 closes with the central axis 101 or with an angle ⁇ to this parallel straight line.
  • the second Sealing surface 40 encloses according to an angle ⁇ .
  • the sum of three angles ⁇ , ⁇ and ⁇ is 180 °.
  • the sealing surface 20 of the housing 2 contains at least one annular groove 25, wherein in each annular groove 25 a seal - in particular an O-ringseinfe employers is.
  • the sealing ring is with a dot-dashed circle 5 ' indicated.
  • a contact pressure p F of the flange 4 is largest there and decreases with increasing radius r: see the diagram on the right side of FIG. 4, in which the pressure curve within the contact area, namely the base zone of the flange 4, is shown.
  • a liquid-permeable gap between the sealing surfaces 20, 40 is so narrow that the material of the sealing ring 5 can not be extruded into these spaces. So that the flange 4 does not lift off, the contact pressure p F must be sufficiently large with respect to the liquid pressure p L. The larger the angle ⁇ is chosen, the larger is p F in the contact area. It is therefore possible to specify the contact pressure p F so that the flange 4 can not lift off.
  • the pressure cover 3 or its flange 4 can be formed so that at an internal pressure of up to 1000 bar - or more - the two sealing surfaces 20, 40 remain in the base zone of the flange 4 in contact.
  • two concentric annular grooves 25 with sealing rings. 5 provided (not shown). Between the two annular grooves 25 can Sensor can be arranged with the liquid due to leakage could flow through the seal located further inside, is registrable.
  • the second sealing surface 40 does not necessarily have to be on a conical surface lie; It can also be slightly bulged (convex).
  • the housing 2 and / or the pressure cover 3 is usually made of a metallic material, in particular forged steel.
  • the inventive pump can be used to pump water or a aqueous solution - especially seawater - at a pressure of at least 500 bar are used.
  • the pressure can also be up to 1000 bar or more.

Landscapes

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

Claims (9)

  1. Pompe centrifuge à haute pression dans un boítier en pot avec un couvercle de pression (3), qui présente une partie de bride avec une bride (4), par laquelle le couvercle de pression est fixé sur une face d'étanchéité annulaire (20) située au côté frontal d'un boítier (2) par vissage, où la bride est déformée élastiquement par le vissage, la face d'étanchéité du boítier, au voisinage d'une zone de base de la bride, est en contact sur celle-ci avec une seconde face d'étanchéité (40), caractérisée en ce que les deux faces d'étanchéité (20, 40) se situent avant le vissage sur deux faces coniques ou annulaires s'étendant au moins d'une manière approximativement radiale, et ces deux faces forment un petit angle (χ) qui s'ouvre relativement à un axe central (101) vers l'extérieur de sorte qu'après le vissage de la bride, grâce aux déformations élastiques de celle-ci, les deux faces d'étanchéité sont appliquées par pression l'une à l'autre et que de ce fait l'angle entre les faces d'étanchéité est égal à zéro.
  2. Pompe selon la revendication 1, caractérisée en ce que la face d'étanchéité (20) du boítier (2) forme avec l'axe central (101) un angle α, la seconde face d'étanchéité (40) un angle β, où la somme des trois angles α, β, χ est de 180° et α est de préférence un angle droit.
  3. Pompe selon la revendication 1 ou 2, caractérisée en ce que la face d'étanchéité (20) du boítier (2) comprend au moins une rainure annulaire (25), où est placé dans chaque rainure annulaire un joint d'étanchéité (5), en particulier un joint torique.
  4. Pompe selon l'une des revendications 1 à 3, caractérisée en ce que par le contact des deux faces d'étanchéité (20, 40), chaque rainure annulaire (25) forme avec la seconde face d'étanchéité appliquée (40) une chambre sensiblement fermée de sorte qu'une entrée de liquide dans cette chambre est possible, cependant une sortie de matériau d'étanchéité par extrusion est empêchée.
  5. Pompe selon la revendication 3 ou 4, caractérisée en ce que deux rainures annulaires concentriques (25) avec des bagues d'étanchéité (5) sont prévues, et en ce qu'un capteur pour enregistrer une fuite à travers le joint d'étanchéité situé à l'intérieur est disposé entre les rainures annulaires.
  6. Pompe selon l'une des revendications 1 à 5, caractérisée en ce que le couvercle de pression (3) est réalisé de façon que lors d'une pression intérieure de jusqu'à 1000 bars ou plus, les deux faces d'étanchéité (20, 40) restent en contact dans la zone de base de la bride.
  7. Pompe selon l'une des revendications 1 à 6, caractérisée en ce que la seconde face d'étanchéité (40) est réalisée d'une manière légèrement convexe.
  8. Pompe selon l'une des revendications 1 à 7, caractérisée en ce que le boítier (2) et/ou le couvercle de pression (3) sont réalisés en un matériau métallique, en particulier en acier de forge.
  9. Utilisation d'une pompe (1) selon l'une des revendications 1 à 8 pour le convoyage d'eau ou d'une solution aqueuse, en particulier d'eau de mer, à une pression d'au moins 500 bars.
EP20030405738 2002-11-12 2003-10-14 Boítier dotée d'un covercle pour une pompe centrifuge à haute pression Expired - Lifetime EP1420166B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20030405738 EP1420166B1 (fr) 2002-11-12 2003-10-14 Boítier dotée d'un covercle pour une pompe centrifuge à haute pression

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP02405971 2002-11-12
EP02405971 2002-11-12
EP20030405738 EP1420166B1 (fr) 2002-11-12 2003-10-14 Boítier dotée d'un covercle pour une pompe centrifuge à haute pression

Publications (2)

Publication Number Publication Date
EP1420166A1 EP1420166A1 (fr) 2004-05-19
EP1420166B1 true EP1420166B1 (fr) 2005-09-07

Family

ID=32178700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030405738 Expired - Lifetime EP1420166B1 (fr) 2002-11-12 2003-10-14 Boítier dotée d'un covercle pour une pompe centrifuge à haute pression

Country Status (1)

Country Link
EP (1) EP1420166B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008062917A1 (de) * 2008-12-23 2010-07-01 J. Eberspächer GmbH & Co. KG Flanschverbindung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118386A (en) * 1964-01-21 Multi-stage centrifugal pump
US2281631A (en) * 1939-10-06 1942-05-05 Worthington Pump & Mach Corp Centrifugal pump
CH669979A5 (fr) * 1986-04-30 1989-04-28 Sulzer Ag

Also Published As

Publication number Publication date
EP1420166A1 (fr) 2004-05-19

Similar Documents

Publication Publication Date Title
DE3404520C2 (de) Pumpe oder Hydraulikanlage
EP3029333A1 (fr) Pompe a separation axiale
DE102019100158A1 (de) Gerotorpumpe mit radialer Spaltkompensation
DE2937459B2 (de) Dichtungsanordnung für eine Kolbenpumpe
DE202013102506U1 (de) Innenzahnradmaschine mit Schrägbohrungen zur Verbindung hydrostatischer Lager für ein Hohlrad mit einem Druck-Hauptkanal
EP3029332A1 (fr) Pompe a separation axiale
DE69114458T2 (de) Pumpenzwischengehäuse in Blechbauweise.
EP1110017A1 (fr) ELEMENT D'ETANCHEITE A FAIBLE FROTTEMENT et cylindre hydraulique
DE1528968B1 (de) Zahnradpumpe
EP2657525A2 (fr) Machine à roue dentée dotée d'un joint axial qui s'étend dans la zone de la surface extérieure radiale du corps de palier associé
EP1420166B1 (fr) Boítier dotée d'un covercle pour une pompe centrifuge à haute pression
EP2636905A1 (fr) Agencement de joint et pompe dotée d'un agencement de joint
DE1264958B (de) Zahnradpumpe oder -motor
DE102015210004A1 (de) Zahnradmaschine mit belastungsminderndem Druckfeld an den Lagerkörpern
DE2326848A1 (de) Dichter verschluss eines zylindrischen behaelters
DE1291204B (de) Dichtungsanordnung an den Lagerkoerpern einer Zahnradpumpe
EP1230486B1 (fr) Pompe pour milieu liquide ou gazeux
DE2846172C2 (de) Berührungsfreie Dichtung für Kolbenpumpen, insbesondere Plungerkolbenpumpen
EP1941152B1 (fr) Injecteur doté d'un joint et d'une bague d'appui
EP2153075B1 (fr) Palier
EP0929743B1 (fr) Pompe a piston radial
EP0640783A1 (fr) Clapet de non-retour à haute pression
DE2123140A1 (de) Abdichtung einer hin- und hergehenden Stange
WO1996016286A1 (fr) Systeme d'etancheite
DE1280056B (de) Drehkolbenmaschine mit zwei Zahnraedern im Inneneingriff

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20041021

AKX Designation fees paid

Designated state(s): DE FR GB

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050907

REF Corresponds to:

Ref document number: 50301139

Country of ref document: DE

Date of ref document: 20051013

Kind code of ref document: P

ET Fr: translation filed
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

Effective date: 20060608

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50301139

Country of ref document: DE

Representative=s name: MANITZ, FINSTERWALD & PARTNER GBR, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 50301139

Country of ref document: DE

Owner name: SULZER MANAGEMENT AG, CH

Free format text: FORMER OWNER: SULZER PUMPEN AG, WINTERTHUR, CH

Ref country code: DE

Ref legal event code: R082

Ref document number: 50301139

Country of ref document: DE

Representative=s name: MANITZ FINSTERWALD PATENTANWAELTE PARTMBB, DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20150618 AND 20150624

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Owner name: SULZER MANAGEMENT AG, CH

Effective date: 20150828

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

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

Ref country code: FR

Payment date: 20221028

Year of fee payment: 20

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

Ref country code: GB

Payment date: 20221019

Year of fee payment: 20

Ref country code: DE

Payment date: 20221019

Year of fee payment: 20

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230412

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50301139

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20231013

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 EXPIRATION OF PROTECTION

Effective date: 20231013

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 EXPIRATION OF PROTECTION

Effective date: 20231013