EP0715691B1 - Torque-compensated centrifugal pump - Google Patents

Torque-compensated centrifugal pump Download PDF

Info

Publication number
EP0715691B1
EP0715691B1 EP94925659A EP94925659A EP0715691B1 EP 0715691 B1 EP0715691 B1 EP 0715691B1 EP 94925659 A EP94925659 A EP 94925659A EP 94925659 A EP94925659 A EP 94925659A EP 0715691 B1 EP0715691 B1 EP 0715691B1
Authority
EP
European Patent Office
Prior art keywords
pump
impeller
hose
rigid element
secured
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
EP94925659A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0715691A1 (en
Inventor
Bengt Olsson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0715691A1 publication Critical patent/EP0715691A1/en
Application granted granted Critical
Publication of EP0715691B1 publication Critical patent/EP0715691B1/en
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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/406—Casings; Connections of working fluid 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/04—Units comprising pumps and their driving means the pump being fluid driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged

Definitions

  • the present invention relates to a pumping system including a submersible centrifugalpump in which the reaction moment of the pump impeller will be opposed in a manner advantageous to the practipal handling of the pumping system.
  • a hose connected directly to the pump, as discharge line, enabling the line to be rolled up, with the pump and motor still attached to the end, in order to transfer the complete assembly from one application site to another.
  • the main purpose of the present invention is to achive a pumping system including a submersible centrifugal pump with motor and impeller, where the reaction moment on the pump housing caursed by the impeller drive torque is opposed in a manner allowing the pump to be installed and to operate just through suspention from a hose without any other means or attachment.
  • the hose preferably serving also as flow discharge line from the pump.
  • the pump housing (2, Fig.3) may suitably be provided with an outgoing rigid fastend rigid element (7, Fig.3).
  • This element can be designed as an outlet section which is longer than that required to connect the hose (4) securely by means or a hose clip.
  • the outlet section may consist, for example, of a welded-on iron pipe, to which the hose (4) is connected essentially above the centre of the pump impeller.
  • the invention may, of course, be varied within the framework of the patent claims; for example, the arrangement described for large moment may also be obtained even in the case when the hose (4) is connected directly to the pump housing, by provideing the pump housing with some other rigidly protruding rigid element other than the outlet pipe (7), to which the hose is secured essentially above the centre of the pump impeller, for example clamped on the outside or the hose by means of an external hose clip.
  • Another possible alternative is to suspend the pump from one or both of the hoses through which the fluid for the hydraulic drive motor flows (6, Fig.4) and to secure that/them to the aforesaid rigid element some distance up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP94925659A 1993-08-25 1994-08-16 Torque-compensated centrifugal pump Expired - Lifetime EP0715691B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9302739 1993-08-25
SE9302739A SE503575C2 (sv) 1993-08-25 1993-08-25 Vridmomentskompenserad centrifugalpump
PCT/SE1994/000744 WO1995006206A1 (en) 1993-08-25 1994-08-16 Torque-compensated centrifugal pump

Publications (2)

Publication Number Publication Date
EP0715691A1 EP0715691A1 (en) 1996-06-12
EP0715691B1 true EP0715691B1 (en) 1999-12-01

Family

ID=20390875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94925659A Expired - Lifetime EP0715691B1 (en) 1993-08-25 1994-08-16 Torque-compensated centrifugal pump

Country Status (5)

Country Link
EP (1) EP0715691B1 (da)
DE (1) DE69421931T2 (da)
DK (1) DK0715691T3 (da)
SE (1) SE503575C2 (da)
WO (1) WO1995006206A1 (da)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI54185C (fi) * 1976-05-04 1978-10-10 Sarlin Ab Oy E Fiskpump

Also Published As

Publication number Publication date
DE69421931D1 (de) 2000-01-05
EP0715691A1 (en) 1996-06-12
SE9302739L (sv) 1995-02-26
DE69421931T2 (de) 2000-11-02
SE503575C2 (sv) 1996-07-08
WO1995006206A1 (en) 1995-03-02
DK0715691T3 (da) 2000-05-08
SE9302739D0 (sv) 1993-08-25

Similar Documents

Publication Publication Date Title
US4650163A (en) Hydraulic winch
US3785752A (en) Portable submersible pump
US3273507A (en) Transportable float-supported centrifugal pump assembly
EP0715691B1 (en) Torque-compensated centrifugal pump
US4019836A (en) Plastic motor-pump base for a submersible pump unit
EP0277131B1 (en) Loop pump
US6988874B2 (en) Tile flood pump
JP2008002411A (ja) 立軸樹脂製水中ポンプ
CA1106697A (en) Submersible pump arrangement
CN212896781U (zh) 一种排水车
JP3589918B2 (ja) 排水ポンプ車
EP0648934A1 (en) Full-circumferential flow pump
CN111980894B (zh) 平衡调整装置及具有其的游梁式抽油机
CA2245749C (en) Water jet propulsion device for marine vessel
CN207246045U (zh) 新型深井消防泵
CN101042148A (zh) 移动式液压泵
CN111794357B (zh) 一种排水车
JP4037054B2 (ja) 立軸ポンプ
CA1227127A (en) Erecting rig for a well pump
CN217270874U (zh) 一种用于冷却塔的水泵
CN220726605U (zh) 一种增压式潜水泵
CN215370257U (zh) 一种双吸泵及应急抢险设备
EP1170509A3 (de) Fluidleitendes Gehäuseendteil für eine Kreiselpumpe
CN220956087U (zh) 一种组合式潜水泵
CN220727434U (zh) 一种便于安装的缓冲管

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: 19960207

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE DK FR GB IT SE

17Q First examination report despatched

Effective date: 19980616

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE DK FR GB IT SE

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

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19991201

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;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: 19991201

REF Corresponds to:

Ref document number: 69421931

Country of ref document: DE

Date of ref document: 20000105

ET Fr: translation filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

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
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: GB

Payment date: 20090828

Year of fee payment: 16

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

Ref country code: DE

Payment date: 20100826

Year of fee payment: 17

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100816

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: 20100816

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69421931

Country of ref document: DE

Effective date: 20120301

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

Ref country code: DE

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

Effective date: 20120301

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

Ref country code: DK

Payment date: 20130821

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20130902

Year of fee payment: 20

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

Effective date: 20140816