GB929790A - Improvements in or relating to centrifugal pumps - Google Patents

Improvements in or relating to centrifugal pumps

Info

Publication number
GB929790A
GB929790A GB23484/60A GB2348460A GB929790A GB 929790 A GB929790 A GB 929790A GB 23484/60 A GB23484/60 A GB 23484/60A GB 2348460 A GB2348460 A GB 2348460A GB 929790 A GB929790 A GB 929790A
Authority
GB
United Kingdom
Prior art keywords
impeller
diffuser
bearing
pump
hub
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
GB23484/60A
Inventor
Kenneth Raymond Lung
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.)
Tait Manufacturing Co
Original Assignee
Tait Manufacturing Co
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 Tait Manufacturing Co filed Critical Tait Manufacturing Co
Priority to GB23484/60A priority Critical patent/GB929790A/en
Publication of GB929790A publication Critical patent/GB929790A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/04Shafts or bearings, or assemblies thereof
    • F04D29/046Bearings
    • F04D29/047Bearings hydrostatic; hydrodynamic
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/02Selection of particular materials
    • F04D29/026Selection of particular materials especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/60Mounting; Assembling; Disassembling
    • F04D29/62Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/20Oxide or non-oxide ceramics
    • F05D2300/22Non-oxide ceramics
    • F05D2300/229Sulfides
    • F05D2300/2291Sulfides of molybdenum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/40Organic materials
    • F05D2300/43Synthetic polymers, e.g. plastics; Rubber
    • F05D2300/433Polyamides, e.g. NYLON

Landscapes

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

Abstract

929,790. Centrifugal pumps. TAIT MANUFACTURING CO. July 5, 1960, No. 23484/60. Class 110 (1). A centrifugal pump comprises an impeller having a hub forming a bearing surface rotatable within a bearing, at least the hub being formed from a synthetic resin having the property of swelling in water by a predetermined amount, the outer diameter of the bearing surface being sufficiently less than the inner diameter of the bearing when the pump is first placed in service that a substantial running clearance is provided for the passage of sand or other abrasive material present in the water, and the clearance becoming reduced, after the swelling has taken place, to a valve providing proper bearing support. In the case of a pump put into service in a new well, the high concentration of abrasive material usually encountered for the first few hours or days of operation in a new well can pass through the initial substantial bearing clearances without causing undue wear. The impellers 21, Fig. 6, of a multistage submersible pump are made of a nylon resin which swells in water by 1 to 3% of its initial dimensions, the resin desirably containing molybdenum disulphide to control the swelling and act as a lubricant. Each impeller may be cast in two pieces, one including the hub 30 and back shroud 33 and the other including the front shroud 35 and vanes 36, the pieces being secured together by means of integral rivets formed on each vane and passing through holes in the back shroud. Each impeller 21, together with a diffuser 22, operates within a casing 23, the thrust on the impeller normally being taken by engagement of a boss 40 with a bearing surface 45 on the casing 23. In the event of reversal of the thrust, the thrust is instead taken by a bearing surface 53 on a bush 51, which may be of stainless steel, in the centre of the diffuser 22. The bush 51 forms a radial bearing for hub sleeve 34, the clearance between the sleeve and bush being initially large, for the reason stated above, before the sleeve has become swollen by the water. Each impeller 21 is splined to the pump shaft 20 with freedom to float axially, and the shaft has no bearings other than the bushes 51. Each diffuser 22 is cast from a plastics material and comprises a disc 50 formed with a cylindrical rim 55. The liquid discharged by each impeller 21 is guided axially by generally helical fins 56, Fig. 7, projecting outwardly from the rim 55 of the adjacent diffuser 22, each fin 56 ending in a shoulder 57, Figs. 7 and 8, which engages within a notch 47 in the surrounding casing 23. The liquid is then guided radially inwardly towards the next impeller by means of diffuser vanes 61, formed on the back of the diffuser 22. The outer portion 62 of each vane 61 is cylindrically curved and merges with the rim 55.
GB23484/60A 1960-07-05 1960-07-05 Improvements in or relating to centrifugal pumps Expired GB929790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB23484/60A GB929790A (en) 1960-07-05 1960-07-05 Improvements in or relating to centrifugal pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23484/60A GB929790A (en) 1960-07-05 1960-07-05 Improvements in or relating to centrifugal pumps

Publications (1)

Publication Number Publication Date
GB929790A true GB929790A (en) 1963-06-26

Family

ID=10196353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23484/60A Expired GB929790A (en) 1960-07-05 1960-07-05 Improvements in or relating to centrifugal pumps

Country Status (1)

Country Link
GB (1) GB929790A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0828081A1 (en) * 1996-09-06 1998-03-11 Honda Giken Kogyo Kabushiki Kaisha Pump and medium circulation apparatus
WO2007118482A1 (en) * 2006-04-04 2007-10-25 Efficient Energy Gmbh Heat pump
CN102713302A (en) * 2009-12-30 2012-10-03 普拉德研究及开发股份有限公司 Submersible pump stage
CN104265649A (en) * 2014-09-17 2015-01-07 君禾泵业股份有限公司 Novel multistage submersible pump

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0828081A1 (en) * 1996-09-06 1998-03-11 Honda Giken Kogyo Kabushiki Kaisha Pump and medium circulation apparatus
US6126386A (en) * 1996-09-06 2000-10-03 Honda Giken Kogyo Kabushiki Kaisha Pump and medium circulation apparatus
WO2007118482A1 (en) * 2006-04-04 2007-10-25 Efficient Energy Gmbh Heat pump
US7841201B2 (en) 2006-04-04 2010-11-30 Efficient Energy Gmbh Heat pump that evaporates water as a working liquid to generate a working vapor
US9222483B2 (en) 2006-04-04 2015-12-29 Efficient Energy Gmbh Heat pump
CN102713302A (en) * 2009-12-30 2012-10-03 普拉德研究及开发股份有限公司 Submersible pump stage
CN102713302B (en) * 2009-12-30 2015-11-25 普拉德研究及开发股份有限公司 submersible pump stage
CN104265649A (en) * 2014-09-17 2015-01-07 君禾泵业股份有限公司 Novel multistage submersible pump

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