EP1170509B1 - Connexion d'aspiration ou de refoulement d'une pompe centrifuge - Google Patents

Connexion d'aspiration ou de refoulement d'une pompe centrifuge Download PDF

Info

Publication number
EP1170509B1
EP1170509B1 EP01115908A EP01115908A EP1170509B1 EP 1170509 B1 EP1170509 B1 EP 1170509B1 EP 01115908 A EP01115908 A EP 01115908A EP 01115908 A EP01115908 A EP 01115908A EP 1170509 B1 EP1170509 B1 EP 1170509B1
Authority
EP
European Patent Office
Prior art keywords
end part
housing end
connection flange
pocket
hole
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
EP01115908A
Other languages
German (de)
English (en)
Other versions
EP1170509A2 (fr
EP1170509A3 (fr
Inventor
Per Frost Vedsted
Ryan Sondergaard
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.)
Grundfos AS
Original Assignee
Grundfos AS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7647984&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1170509(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Grundfos AS filed Critical Grundfos AS
Publication of EP1170509A2 publication Critical patent/EP1170509A2/fr
Publication of EP1170509A3 publication Critical patent/EP1170509A3/fr
Application granted granted Critical
Publication of EP1170509B1 publication Critical patent/EP1170509B1/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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially 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
    • F04D29/4293—Details of fluid inlet or outlet

Definitions

  • the invention is based on a fluid-conducting housing end part for a centrifugal pump, wherein the housing end part has at least one hole-free connection flange, which can be connected to a counterpart connection flange of a pipeline using clamping means which engage behind the flange.
  • Such a fluid-conducting end part is known for a generally multi-stage inline centrifugal pump for the chemical industry.
  • the housing end part has two diametrically opposite connecting pieces, each with a connecting flange, these flanges having no fastening holes.
  • a conduit with a mating flange is connected, which also has no mounting holes.
  • the connection between the flange and counterflange with each other is made by the fact that the back of the flanges is formed obliquely and that brackets or similar clamping means are used which engage around the flanges and are pressed by Schroubkraft against the flanges to hold them together.
  • Such a clamp connection is z. As disclosed in DE-OS 1,450,396.
  • connection flanges which are provided with mounting holes.
  • connection flanges are usually so-called oval flanges, which have two diametrically opposite mounting holes for a screw-nut connection.
  • a pump which is provided for connection of a connection flange provided with fastening holes, is known from DE 20 30 027.
  • a ring integral with the pump housing and surrounding the connection flange is provided, in which threaded bores are formed, into which threaded bolts for fastening a connection flange provided with fastening holes are formed.
  • This embodiment is suitable alone to attach connection flanges with mounting holes on the pump housing.
  • Punch-free connection flanges as used in the chemical industry, can not be flanged to the pump housing described in DE 20 30 027.
  • the object of the invention is therefore to improve a fluid-conducting housing end part for a centrifugal pump so that this housing end part both pipes with.
  • Connection flanges which are provided with mounting holes conventional shape and position, as well as hole-free connection flanges are connected.
  • an equipped centrifugal pump according to the invention is common both in the chemical industry, where pumps are used with hole-free connection flanges, as well as in other areas where piping with a mating flange with mounting holes are common, for example in a mating flange with mounting holes, for example in heating systems , usable.
  • the attachment formations assigned to its connection flange each consist of a wall recess of the housing end part, which comprises a laterally open, pocket-like receptacle for inserting a nut and a passage for the bolt inserted into the receptacle.
  • the pocket-like receptacle of the wall recesses has a width, which is essentially the wrench size of the nut equivalent.
  • fastening formations of the housing end part consists in that the fastening formations are designed in the form of a blind hole with thread in the peripheral wall structure of the housing end part.
  • the blind hole can be made as such at the same time when casting the housing end.
  • the centrifugal pump shown in Fig. 1 only with its lower portion is a multi-stage pump of known type and comprises a lower fluid-conducting housing end part 1, the lower end of a pump 2 carries foot and the upper end with a hollow cylindrical, the individual pump stages 3 with a radial distance surrounding shell 4 is connected.
  • the lower housing end part thus two themselves has diametrically opposite connecting pieces 5 and 6 for the suction or discharge of the pumped medium.
  • the lower housing end part is provided with only one inlet connection 5.
  • the outlet 6 is then z. B. in a housing end portion that is provided at the upper end of the multi-stage centrifugal pump, as is also known.
  • the nozzles 5 and 6 each have a connecting flange 7 and 8, which, apart from the respective central inlet channel 9 and outlet channel 10 is formed without holes.
  • the back of the flanges is formed obliquely or strongly tapered. Pumps with such known flanges are mainly used in the field of chemistry and connected to pipelines, the connecting flanges are also hole-free and have a strong conical back ..
  • the attachment of the pump flanges to the pipe flanges takes place in a known manner by means of screw clamps or the like , which engage behind the respective flange pairings and so fasten the flanges of each pair pressing together.
  • each mounting flange has two oppositely disposed mounting formations 11 and 12 spaced apart such that the respective mounting flange is located between the mounting formations such that bolts engage the respective one Connection flange can intervene in the mounting formations, as will become clear.
  • the mounting formations 11, 12 consist of a wall recess in the peripheral wall structure 13 of the housing end portion 1.
  • Each wall recess comprises a laterally open receptacle 14 for the insertion of a nut and a passage perpendicular thereto 15 for screwing a bolt into the nut used in the recording.
  • the pocket-like receptacle has such an inner width W (FIG. 3), which essentially corresponds to the wrench size of the screw nut.
  • the bottom of the pocket-like receptacle 14 is provided with a blind hole depression 16, so that the end of the screw bolt which protrudes from the inserted nut can move into the blind hole recess without disturbing influence.
  • the fluid-conducting housing end part 1 is produced by the process of casting. It therefore makes sense to co-infuse also the fastening formations 11 and 12 in the form of the wall recesses during the casting process of the housing end part 1, which is why the wall recesses are formed by casting in the peripheral wall structure 13 of the housing end part.
  • fastening formations 11 and 12 are formed as a threaded blind hole 17 in the peripheral wall structure 13 of the housing end portion 1, as shown in the lower half of Fig. 5.
  • the blind hole partially prepared during casting of the housing end part either by the blind hole as such or only the amount of material for the blind hole is mitgegossen at the relevant wall location of the housing end portion. In the first case, only the thread needs to be cut.
  • the pocket-like wall recesses 14 and 15 may be formed in an outer sprue part corresponding to the aforementioned outer sprue part 18. This embodiment is not shown but will be readily understood by those skilled in the art.
  • FIG. 2 shows, in addition to the housing end part 1 described above, two so-called oval flanges 20 and 21, which are known per se, with two diametrically opposite fastening holes 22. These oval flanges are connected in a known manner to pipes, not shown. Furthermore, two bolts 23 are shown for the left Ovalflansch 20, which are inserted through the mounting holes 22. The same applies to the right oval flange 21. In addition, two sealing rings 24 are shown, wherein a respective sealing ring between a hole-free connecting flange 7, 8 and the associated Ovalflansch 20 and 21 is positioned.
  • first nuts 25 are inserted into the pocket-shaped wall recesses 14,15, after which the bolts 23, after the oval flanges 20, 21 on the housing end flanges 7 and 8 with the interposition of the Sealing rings 24 have been recognized, inserted through the mounting holes 22 of the oval flanges 20 and 21 through and screwed into the nuts used in the wall recesses 14, 15 nuts 25.
  • the bolts 23 extend outwardly past the connecting flanges 7 and 8 of the housing end part 1 and are readily connectable to the housing end part 1.
  • an upper fluid-conducting housing end part or a middle housing part for a multistage centrifugal pump can also be as above be described described.
  • the upper housing end portion or the central housing part thus has a discharge nozzle with a connecting flange, which has no mounting holes for a mating flange except its pressure outlet, however, the respective housing part is provided with two opposite mounting formations 11 and 12 of the desired type.
  • the inventive design is also applicable to single-stage centrifugal pumps.

Claims (8)

  1. Partie d'extrémité de carter véhiculant du fluide pour une pompe centrifuge, la partie d'extrémité de carter présentant au moins une bride de raccordement (7, 8) sans trou, qui peut être reliée à une bride conjuguée de raccordement sans trou d'une conduite, moyennant l' utilisation de moyens de serrage saisissant par derrière la bride de raccordement, caractérisée en ce que la partie d'extrémité de carter (1) présente, dans la zone de sa bride de raccordement (7, 8), au moins deux formations de fixation (11, 12) situées dans des positions opposées l'une à l'autre et recevant chacune un boulon fileté (23), qui ont entre elles un espacement tel, que les boulons filetés (23) peuvent être reliés aux formations de fixation (11, 12) de la partie d'extrémité de carter en passant devant la bride de raccordement (7, 8).
  2. Partie d'extrémité de carter selon la revendication 1, caractérisée en ce que les formations de fixation (11, 12) associées à la bride de raccordement (7, 8) se composent chacune d'un évidement de paroi de la partie d'extrémité de carter (1), qui comprend un logement (14) ouvert sur le côté et en forme de poche, pour l'insertion d'un écrou de vis (25), et un passage (15) pour le boulon fileté (23) s'engageant dans l'écrou de vis (25) inséré.
  3. Partie d'extrémité de carter selon la revendication 2, caractérisée en ce que le logement (14) en forme de poche de l'évidement de paroi présente une largeur (W) qui correspond sensiblement à la largeur, entre pans opposés, de l'écrou de vis (25).
  4. Partie d'extrémité de carter selon la revendication 2 ou 3, caractérisée en ce que le logement (14) en forme de poche des évidements de paroi est doté d'une cavité en trou borgne pour l'introduction de l'extrémité du boulon fileté (23).
  5. Partie d'extrémité de carter selon l'une des revendications 2, 3 ou 4, caractérisée en ce que les évidements de paroi (14, 15) dans la structure de paroi périphérique (13) de la partie d'extrémité de carter (1) sont réalisés par des techniques de coulée et sont produits conjointement avec la partie d'extrémité de carter par coulée.
  6. Partie d'extrémité de carter selon l'une des revendications 2, 3 ou 4, caractérisée en ce que les évidements de paroi (14, 15) sont réalisés, par des techniques de coulée, dans une partie d'entrée d'injection extérieure de la structure de paroi périphérique (13) de la partie d'extrémité de carter (1) et sont produits conjointement avec la partie d'extrémité de carter par coulée.
  7. Partie d'extrémité de carter selon la revendication 1, caractérisée en ce que les formations de fixation (11, 12) associées à la bride de raccordement (7, 8) sont constituées chacune d'un trou borgne (17) avec filetage dans la structure de paroi périphérique (13) de la partie d'extrémité de carter (1).
  8. Partie d'extrémité de carter selon la revendication 1, caractérisée en ce que les formations de fixation (11, 12) associées à la bride de raccordement (7, 8) sont constituées chacune d'un trou borgne (19) avec filetage dans une partie d'entrée d'injection (18) extérieure de la structure de paroi périphérique (13) de la partie d'extrémité de carter (1).
EP01115908A 2000-07-06 2001-06-29 Connexion d'aspiration ou de refoulement d'une pompe centrifuge Expired - Lifetime EP1170509B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000132835 DE10032835C5 (de) 2000-07-06 2000-07-06 Fluidleitendes Gehäuseendteil für eine Kreiselpumpe
DE10032835 2000-07-06

Publications (3)

Publication Number Publication Date
EP1170509A2 EP1170509A2 (fr) 2002-01-09
EP1170509A3 EP1170509A3 (fr) 2004-01-14
EP1170509B1 true EP1170509B1 (fr) 2006-03-15

Family

ID=7647984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01115908A Expired - Lifetime EP1170509B1 (fr) 2000-07-06 2001-06-29 Connexion d'aspiration ou de refoulement d'une pompe centrifuge

Country Status (2)

Country Link
EP (1) EP1170509B1 (fr)
DE (2) DE10032835C5 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008071592A1 (fr) * 2006-12-14 2008-06-19 Dab Pumps S.P.A. Pompe hydraulique
DE102008013473A1 (de) * 2008-03-10 2009-09-17 Wilo Ag Pumpengehäuse mit verdrehbaren Befestigungsflanschen
EP2112380A1 (fr) * 2008-04-21 2009-10-28 DP Industries B.V. Pompe centrifuge en plusieurs étages en construction en ligne
DE102008045093B4 (de) 2008-08-29 2015-12-10 Ksb Ag Mehrstufige Kreiselpumpe mit Mantelrohr
CN103398022B (zh) * 2013-08-12 2016-06-01 浙江威格泵业有限公司 一种屏蔽泵的泵头

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1450396A1 (de) * 1963-08-09 1968-11-14 Res & Dev Pty Ltd Dichtverbindung fuer stroemungsfaehige Medien

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE378662C (de) * 1923-07-25 Adolf Zeller Abnehmbares Saugrohr fuer Kreiselpumpen
US2858768A (en) * 1954-08-12 1958-11-04 Union Carbide Corp Corrosion resistant pump
DE1082123B (de) * 1956-01-14 1960-05-19 Karl Wernert Kreiselpumpe fuer angreifende Medien
US3427982A (en) * 1967-09-25 1969-02-18 Flygt Corp Submersible pumps
DE2030027A1 (de) * 1970-06-18 1971-12-30 Rheinhuette Pumpe zur Förderung aggressiver Flüssigkeiten
US3771914A (en) * 1972-05-08 1973-11-13 C Crespo Connecting flange arrangement of submersible pump for fixed discharge outlet
DE4413488A1 (de) * 1994-04-19 1995-10-26 Leybold Ag Vakuumdichte Verbindung
JPH0875074A (ja) * 1994-09-07 1996-03-19 Kayaba Ind Co Ltd ポンプ用サクションコネクター

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1450396A1 (de) * 1963-08-09 1968-11-14 Res & Dev Pty Ltd Dichtverbindung fuer stroemungsfaehige Medien

Also Published As

Publication number Publication date
DE10032835A1 (de) 2002-01-24
DE10032835C5 (de) 2008-07-03
DE50109195D1 (de) 2006-05-11
DE10032835C2 (de) 2003-11-13
EP1170509A2 (fr) 2002-01-09
EP1170509A3 (fr) 2004-01-14

Similar Documents

Publication Publication Date Title
WO2001029472A1 (fr) Systeme de canalisation
WO2017102491A1 (fr) Pompe centrifuge multi-étagée comprenant des tirants d'ancrage constitués de tôle
EP2663435B1 (fr) Organe d'ajout et élément de boîtier pour un dispositif mélangeur
EP1740873B1 (fr) Raccord pour tuyaux flexibles
EP1170509B1 (fr) Connexion d'aspiration ou de refoulement d'une pompe centrifuge
EP3009680B1 (fr) Pompe centrifuge à plusieurs étages
EP3105483A1 (fr) Bride de fixation
DE19529189C2 (de) Anschlußstück
DE2222290A1 (de) Muffenverbindung fuer rohre, armaturen oder dgl
EP0076275A1 (fr) Raccordement etanche de tubes en matiere plastique resistant aux forces de poussee
DE3146219A1 (de) "spannband zur verbindung von zwei im verbindungsstossbereich kreisfoermigen teilen"
DE3221518C2 (de) Fittinge zum automatischen Verbinden von Leitungen in pneumatischen oder hydraulischen Kreisen
WO2007121856A1 (fr) Robinetterie de conduite d'eau sanitaire avec régulateur de jet
DE4102048C2 (de) Sanitärarmatur
EP1043452B1 (fr) Agencement d'un filtre
DE2917350A1 (de) Vorrichtung zum befestigen eines elementes an einem rohr
DE1475616B2 (de) Dichte Verbindung für Muffenrohre
DE3825313A1 (de) Vorrichtung fuer die befestigung von druckschlaeuchen in anschlussbohrungen
DE8317189U1 (de) Steckkupplung
EP0759487A1 (fr) Pièce de raccordement
DD240415A1 (de) Ueberschiebemuffe oder kunststoffrohr mit flanschabgang
DE4430435C2 (de) Knieförmiges Übergangsstück aus Kunststoff
DE3445054C2 (fr)
EP1843049B1 (fr) Liaison de barres de differents diamètres
DE1475616C (de) Dichte Verbindung für Muffenrohre

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: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7F 04D 29/42 A

17P Request for examination filed

Effective date: 20040513

17Q First examination report despatched

Effective date: 20040729

AKX Designation fees paid

Designated state(s): DE FR GB IT

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 IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50109195

Country of ref document: DE

Date of ref document: 20060511

Kind code of ref document: P

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

Effective date: 20060515

ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: WILO AG

Effective date: 20061027

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

PLCK Communication despatched that opposition was rejected

Free format text: ORIGINAL CODE: EPIDOSNREJ1

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 20101109

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

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: 20200623

Year of fee payment: 20

Ref country code: DE

Payment date: 20200618

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: 20200625

Year of fee payment: 20

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

Ref country code: IT

Payment date: 20200630

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50109195

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20210628

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: 20210628