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GB2009849A - Centrifugal pumps - Google Patents

Centrifugal pumps

Info

Publication number
GB2009849A
GB2009849A GB7843640A GB7843640A GB2009849A GB 2009849 A GB2009849 A GB 2009849A GB 7843640 A GB7843640 A GB 7843640A GB 7843640 A GB7843640 A GB 7843640A GB 2009849 A GB2009849 A GB 2009849A
Authority
GB
United Kingdom
Prior art keywords
liquid
pump
diverted
flow
centrifugal pumps
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
GB7843640A
Other versions
GB2009849B (en
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.)
HERMETIC PUMPEN GmbH
Original Assignee
HERMETIC PUMPEN GmbH
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 HERMETIC PUMPEN GmbH filed Critical HERMETIC PUMPEN GmbH
Publication of GB2009849A publication Critical patent/GB2009849A/en
Application granted granted Critical
Publication of GB2009849B publication Critical patent/GB2009849B/en
Expired 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
    • 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
    • F04D13/0606—Canned motor pumps
    • F04D13/0613—Special connection between the rotor compartments

Landscapes

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

Abstract

A part of the liquid being pumped is diverted for lubricating the impeller shaft 20 and/or for cooling a driving means mounted in the pump housing, which means may be a motor 2 or a magnetic coupling. In order to avoid evaporation of the liquid, the flow rate of the diverted liquid is substantially constant over the operating range of the pump and is substantially independent of the throughput of the pump. This may be achieved by arranging the inlet 17 and outlet 18 of the flow path of the diverted liquid at points of approximately equal elevated pressure, the flow being promoted by an auxiliary pump impeller 10. <IMAGE>
GB7843640A 1977-12-09 1978-11-08 Centrifugal pumps Expired GB2009849B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772754840 DE2754840C3 (en) 1977-12-09 1977-12-09 Centrifugal pump

Publications (2)

Publication Number Publication Date
GB2009849A true GB2009849A (en) 1979-06-20
GB2009849B GB2009849B (en) 1982-05-12

Family

ID=6025675

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7843640A Expired GB2009849B (en) 1977-12-09 1978-11-08 Centrifugal pumps

Country Status (4)

Country Link
CH (1) CH632060A5 (en)
DE (1) DE2754840C3 (en)
FR (1) FR2411322A1 (en)
GB (1) GB2009849B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150979A (en) * 1983-12-06 1985-07-10 Crane Co A pressurized recirculation system for cooling a canned motor pump
GB2167495A (en) * 1984-11-20 1986-05-29 Boc Group Plc Cooling a pump drive coupling
FR2626940A1 (en) * 1988-02-09 1989-08-11 Grundfos Int MOTOR PUMP GROUP FOR HEATING FACILITIES
GB2357377A (en) * 1999-12-13 2001-06-20 Delphi Tech Inc Cooling a combined pump and electric generator
US6561155B1 (en) 1998-10-12 2003-05-13 Dana Automotive Limited Pumping apparatus for an internal combustion engine
CN102808779A (en) * 2011-06-03 2012-12-05 开利泵业(集团)有限公司 Low-noise water-cooled centrifugal pump
FR3015585A1 (en) * 2013-12-19 2015-06-26 Wilo Salmson France ROTOR PROTECTION OF A NO-ROTOR SYNCHRONOUS MOTOR FLUID CIRCULATION PUMP
US10288073B2 (en) 2013-05-08 2019-05-14 Ksb Aktiengesellschaft Pump arrangement

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2840137C2 (en) * 1978-09-15 1986-04-30 Lederle GmbH Pumpen- und Maschinenfabrik, 7803 Gundelfingen Pump-motor unit with a magnetic coupling
DE3015211C2 (en) * 1980-04-19 1986-05-28 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Protective device for underwater motors
DE9116052U1 (en) * 1991-12-24 1992-02-20 Pumpenbau G. Schulte, 4040 Neuss Pump for liquids with low viscosity or close to the boiling point
DE102009023188B4 (en) 2009-05-29 2011-03-31 Baron von Grotthuß, Alexander Turbomachine with arranged inside a hollow shaft impeller
DE102011122554B3 (en) * 2011-12-27 2013-03-07 Eagleburgmann Germany Gmbh & Co. Kg Magnetic coupling and agitator with such magnetic coupling

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7231312U (en) * 1972-11-16 Hermetic Pumpen Gmbh Canned motor pump unit
FR1087959A (en) * 1953-05-04 1955-03-02 Vogel Pumpen Device for cooling the rotor of submersible motors
DE942338C (en) * 1953-05-04 1956-05-03 Vogel Pumpen Device for cooling the runner of water-filled underwater motors by means of an internal water cooling circuit
GB739537A (en) * 1953-05-18 1955-11-02 Fmc Corp Electric pump motor
GB773827A (en) * 1954-04-16 1957-05-01 Chempump Corp Improvements in motor driven pumps
US3013500A (en) * 1958-07-10 1961-12-19 Westinghouse Electric Corp Sealed dynamoelectric machine
DE1100788B (en) * 1960-03-05 1961-03-02 Siemens Ag Canned motor filled with the delivery fluid to drive pumps
CH389409A (en) * 1960-12-05 1965-03-15 Lederle Pumpen & Maschf Multistage centrifugal pump driven by a canned motor
US3318253A (en) * 1965-01-21 1967-05-09 Pall Corp Pumps with heat exchanger for pumping slurries
US3572976A (en) * 1967-10-09 1971-03-30 Nikkiso Co Ltd Fluid takeoff device for canned motor driven pump

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150979A (en) * 1983-12-06 1985-07-10 Crane Co A pressurized recirculation system for cooling a canned motor pump
GB2167495A (en) * 1984-11-20 1986-05-29 Boc Group Plc Cooling a pump drive coupling
FR2626940A1 (en) * 1988-02-09 1989-08-11 Grundfos Int MOTOR PUMP GROUP FOR HEATING FACILITIES
US6561155B1 (en) 1998-10-12 2003-05-13 Dana Automotive Limited Pumping apparatus for an internal combustion engine
GB2357377A (en) * 1999-12-13 2001-06-20 Delphi Tech Inc Cooling a combined pump and electric generator
CN102808779A (en) * 2011-06-03 2012-12-05 开利泵业(集团)有限公司 Low-noise water-cooled centrifugal pump
US10288073B2 (en) 2013-05-08 2019-05-14 Ksb Aktiengesellschaft Pump arrangement
FR3015585A1 (en) * 2013-12-19 2015-06-26 Wilo Salmson France ROTOR PROTECTION OF A NO-ROTOR SYNCHRONOUS MOTOR FLUID CIRCULATION PUMP

Also Published As

Publication number Publication date
FR2411322B1 (en) 1985-01-18
DE2754840B2 (en) 1981-04-09
CH632060A5 (en) 1982-09-15
FR2411322A1 (en) 1979-07-06
GB2009849B (en) 1982-05-12
DE2754840A1 (en) 1979-06-13
DE2754840C3 (en) 1986-10-02

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19981107