GB997863A - Improvements relating to centrifugal pumps - Google Patents

Improvements relating to centrifugal pumps

Info

Publication number
GB997863A
GB997863A GB28402/62A GB2840262A GB997863A GB 997863 A GB997863 A GB 997863A GB 28402/62 A GB28402/62 A GB 28402/62A GB 2840262 A GB2840262 A GB 2840262A GB 997863 A GB997863 A GB 997863A
Authority
GB
United Kingdom
Prior art keywords
inlet
pass
flow
passage
effect
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
GB28402/62A
Inventor
Stanley Peerman Hutton
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.)
B S A Harford Pumps Ltd
Original Assignee
B S A Harford Pumps Ltd
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 B S A Harford Pumps Ltd filed Critical B S A Harford Pumps Ltd
Priority to GB28402/62A priority Critical patent/GB997863A/en
Priority to DEH42799U priority patent/DE1877836U/en
Priority to AT572963A priority patent/AT263549B/en
Priority to US297006A priority patent/US3286639A/en
Priority to LU44117D priority patent/LU44117A1/xx
Priority to CH921363A priority patent/CH398321A/en
Publication of GB997863A publication Critical patent/GB997863A/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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0011—Control, e.g. regulation, of pumps, pumping installations or systems by using valves by-pass valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Lubricants (AREA)
  • Medicines Containing Plant Substances (AREA)

Abstract

997,863. Centrifugal pumps. B.S.A. HARFORD PUMPS Ltd. July 22, 1963 [July 24, 1962], No. 28402/62. Heading F1C. In a centrifugal pump comprising a by-pass passage through which some liquid at elevated pressure is bled off and returned to the inlet leading to the impeller, the by-pass passage is so arranged that the by-pass flow issuing from the passage into the inlet has a directional component which is opposed to the direction of the main flow through the inlet, so that the by-pass flow physically opposes and thereby restricts the main flow through the inlet. A circulating pump for a central heating system is controlled by returning part of the flow to the inlet 2 via a by-pass passage 10, under the control of a manually adjustable valve 12. The by-pass passage 10 is located midway around the volute 4 and is inclined at approximately 15 degrees to the axis of the inlet. The by-pass flow enters the inlet 2 in counterflow to the inlet flow, whereby a throttling effect is exerted to restrict the inlet flow, thereby augmenting the normal by-pass effect in reducing the pump output. Rotation of the by-pass valve 12 towards the closed position alters the angle at which the by-pass flow discharges into the inlet 2, whereby the effect of the counterflow in throttling the inlet flow is reduced. The discharge angle may be fixed. Instead of being continuously variable, the by-pass valve may have two positions only. Alternatively, a by-pass passage with a fixed angle and a fixed flow may be provided.
GB28402/62A 1962-07-24 1962-07-24 Improvements relating to centrifugal pumps Expired GB997863A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB28402/62A GB997863A (en) 1962-07-24 1962-07-24 Improvements relating to centrifugal pumps
DEH42799U DE1877836U (en) 1962-07-24 1962-09-27 CENTRIFUGAL PUMP.
AT572963A AT263549B (en) 1962-07-24 1963-07-17 centrifugal pump
US297006A US3286639A (en) 1962-07-24 1963-07-23 Pumps
LU44117D LU44117A1 (en) 1962-07-24 1963-07-23
CH921363A CH398321A (en) 1962-07-24 1963-07-24 Centrifugal pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28402/62A GB997863A (en) 1962-07-24 1962-07-24 Improvements relating to centrifugal pumps

Publications (1)

Publication Number Publication Date
GB997863A true GB997863A (en) 1965-07-07

Family

ID=10275053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28402/62A Expired GB997863A (en) 1962-07-24 1962-07-24 Improvements relating to centrifugal pumps

Country Status (6)

Country Link
US (1) US3286639A (en)
AT (1) AT263549B (en)
CH (1) CH398321A (en)
DE (1) DE1877836U (en)
GB (1) GB997863A (en)
LU (1) LU44117A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533293A (en) * 1981-12-22 1985-08-06 Thomassen International Method of improving the part-load behavior of a turbo machine, and a compressor or pump adapted for use of such method

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925042A (en) * 1971-12-18 1975-12-09 Gutehoffnungshuette Sterkrade Apparatus for treating a gas current which is obtained by coal gasification
AT342425B (en) * 1976-05-12 1978-04-10 Vogel Pumpen SELF-PRIMING CENTRIFUGAL PUMP
US4964783A (en) * 1988-04-20 1990-10-23 Hanning Electro-Werke Gmbh & Co. Device for emptying a liquid-collection tank in a water-conducting household appliance
EP0411431B1 (en) * 1989-07-31 1994-11-02 Asmo Co., Ltd. Windscreen washer pump for vehicle
US5141390A (en) * 1990-05-29 1992-08-25 Haentjens Walter D Vertical axis centilevered pump provided with a stabilizing by-pass flow
DE19544173C1 (en) * 1995-11-14 1997-06-05 Grundfos As Housing for a centrifugal pump
NZ336855A (en) * 1999-07-21 2002-03-01 Unitec Inst Of Technology Multi-phase flow pump with vanes having large spaces there between
US7507066B2 (en) * 2006-03-27 2009-03-24 Koenig Kevin J Pump header body and modular manifold
US8202040B2 (en) * 2006-03-27 2012-06-19 Koenig Kevin J Pump header and implementation thereof
FR2970465B1 (en) * 2011-01-19 2013-10-11 Aircelle Sa NACELLE FOR A DOUBLE FLOW AIRCRAFT AIRCRAFT TURBOREACTOR.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190917195A (en) * 1909-07-23 1910-07-25 Otto Wolf Improvements in or relating to Apparatus for Supplying Gas for Illuminating and like purposes.
US1216119A (en) * 1911-07-21 1917-02-13 Pokorny & Wittekind Maschb Ag Rotary compressor and the method of operating it.
US1467331A (en) * 1921-08-24 1923-09-11 Mcdonald Klein Distributing Co Liquid-circulating pump
FR580080A (en) * 1924-04-12 1924-10-29 Motor-pump unit
US2449002A (en) * 1946-08-30 1948-09-07 Lewis F Moody Apparatus for regulating centrifugal machines
GB745693A (en) * 1951-01-04 1956-02-29 Snecma Device for controlling the flow of fluid between cambered blades
US2865297A (en) * 1952-12-22 1958-12-23 Thompson Prod Inc Injector cover for pumps
US3029011A (en) * 1955-10-13 1962-04-10 Bristol Siddeley Engines Ltd Rotary compressors or turbines
FR1230297A (en) * 1958-07-18 1960-09-14 Richardsons Improvement in turbines, blowers or the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533293A (en) * 1981-12-22 1985-08-06 Thomassen International Method of improving the part-load behavior of a turbo machine, and a compressor or pump adapted for use of such method

Also Published As

Publication number Publication date
DE1877836U (en) 1963-08-14
CH398321A (en) 1966-03-15
US3286639A (en) 1966-11-22
LU44117A1 (en) 1963-09-23
AT263549B (en) 1968-07-25

Similar Documents

Publication Publication Date Title
GB997863A (en) Improvements relating to centrifugal pumps
ES196548U (en) A tape valve device. (Machine-translation by Google Translate, not legally binding)
GB1095924A (en) Improvements in or relating to thermally controlled mixing valves
GB1076785A (en) Improvements in or relating to centrifugal and mixed-flow fans, pumps and the like
GB1259528A (en)
ES329648A1 (en) Jet pumping system for a nuclear reactor
GB1503905A (en) Centrifugal fluid pumps
GB1502781A (en) Centrifugal fans and pumps
GB1200197A (en) Improvements in or relating to centrifugal pumps
ES380446A1 (en) Flow control valve
GB1426799A (en) Valves
GB532758A (en) Improvements in or relating to fans or pumps
GB1049976A (en) Improvements in or relating to fans
GB1027790A (en) Improvements in self-priming centrifugal pumps
GB926400A (en) Rotary pumps for circulating liquids
GB1079331A (en) Improvements in or relating to large-capacity double-suction centrifugal fans, blowers or the like
GB1172996A (en) Rotary Impeller Pumps
GB1032938A (en) Centrifugal pumps for liquids
GB1036407A (en) Centrifugal pumps
GB1087912A (en) Improvements in or relating to centrifugal pumps
GB1016003A (en) Improvements in or relating to pumping apparatus
GB1062947A (en) Improvements relating to fluid flow controllers
GB991876A (en) Improvements in centrifugal pumps
SU137767A1 (en) Auto-head centrifugal pump
GB1107603A (en) A pumping plant including means for controlling the pump delivery