GB929790A - Improvements in or relating to centrifugal pumps - Google Patents
Improvements in or relating to centrifugal pumpsInfo
- 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
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
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/047—Bearings hydrostatic; hydrodynamic
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials 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
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps 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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/20—Oxide or non-oxide ceramics
- F05D2300/22—Non-oxide ceramics
- F05D2300/229—Sulfides
- F05D2300/2291—Sulfides of molybdenum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
- F05D2300/433—Polyamides, 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.
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)
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 |
-
1960
- 1960-07-05 GB GB23484/60A patent/GB929790A/en not_active Expired
Cited By (8)
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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