CN102080672A - Centrifugal cooling water pump - Google Patents

Centrifugal cooling water pump Download PDF

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Publication number
CN102080672A
CN102080672A CN2010102900092A CN201010290009A CN102080672A CN 102080672 A CN102080672 A CN 102080672A CN 2010102900092 A CN2010102900092 A CN 2010102900092A CN 201010290009 A CN201010290009 A CN 201010290009A CN 102080672 A CN102080672 A CN 102080672A
Authority
CN
China
Prior art keywords
impeller
water
bearing
low temperature
water inlet
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.)
Pending
Application number
CN2010102900092A
Other languages
Chinese (zh)
Inventor
陈晓飞
魏志明
谭建松
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.)
No70 Research Institute Of China North Industries Group Corp
Original Assignee
No70 Research Institute Of China North Industries Group Corp
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 No70 Research Institute Of China North Industries Group Corp filed Critical No70 Research Institute Of China North Industries Group Corp
Priority to CN2010102900092A priority Critical patent/CN102080672A/en
Publication of CN102080672A publication Critical patent/CN102080672A/en
Priority to US13/701,829 priority patent/US20130078087A1/en
Priority to PCT/CN2011/001559 priority patent/WO2012034359A1/en
Pending legal-status Critical Current

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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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/04—Helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant 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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/006—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps double suction 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
    • F04D13/12—Combinations of two or more pumps
    • F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • 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
    • F04D29/049—Roller bearings
    • 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
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2211—More than one set of flow passages
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • F05D2210/00—Working fluids
    • F05D2210/40—Flow geometry or direction
    • F05D2210/44—Flow geometry or direction bidirectional, i.e. in opposite, alternating directions

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a centrifugal cooling water pump, which comprises a water inlet receiving tray (1), an impeller (2), a volute (3), a bearing (4), a bearing seat (5), a transmission shaft (6), fasteners (7), a high-temperature impeller (8), a hub (9), a low-temperature impeller (10), a water inlet (11), a water inlet (12), a water outlet (13) and a water outlet (14), wherein the water inlet receiving tray (1) is provided with the water inlet (11); the volute (3) is provided with the water inlet (12), and the volute (3) is connected with the water inlet receiving tray (1) and the bearing seat (5) through the fasteners (7); the bearing seat (5) is in interference connection with the bearing (4); the bearing (4) is in interference connection with the transmission shaft (6); the transmission shaft (6) is in interference connection with the impeller (2); and one side of the impeller (2) is provided with the high-temperature impeller (8), the other side of the impeller (2) is provided with the low-temperature impeller (10), and the impeller (2) is axially provided with the hub (9). The centrifugal cooling water pump can improve the temperature balancing capacity of an engine, improve the heat transfer efficiency, reduce the discharge index of an internal-combustion engine, increase the efficiency of the whole machine and reduce the oil consumption.

Description

A kind of centrifugal cooling waterpump
Technical field:
The invention belongs to the hydraulics field, be specifically related to a kind of centrifugal cooling waterpump.
Background technique
At present, internal-combustion engine mainly adopts the centrifugal cooling waterpump of single loop, cooling water temperature only can reach certain index, do not satisfy the temperature requirements of the different parts of internal-combustion engine cooling system to cooling liquid, in order to realize the motor of low oil consumption maximum discharge requirement, on the one hand the temperature of body cooling liquid is brought up to more than 120 ℃, intercooler is in order to satisfy the demand of intake temperature and density on the other hand, machine oil cooler need be limited in coolant temperature below 100 ℃ in order to satisfy oil-cooled demand.Dual cycle cooling system can satisfy the temperature requirements of the different parts of cooling system to cooling liquid, usually the dual cycle cooling system that adopts has the two circulations of double pump and single pump is two circulates two kinds, two coolant pumps are adopted in the two circulations of double pump, the complicated repetition on the structure, the bicirculating system of single pump is complicated in realization, can not improve the temperature equalization ability of motor and satisfy the requirement that improves heat transference efficiency, can not satisfy the demand of the different parts of internal-combustion engine cooling system to the different temperature of cooling liquid, the exhaust index height of internal-combustion engine, overall efficiency is low, the oil consumption height.
Summary of the invention:
A kind of centrifugal cooling waterpump provided by the invention, solved internal-combustion engine oil consumption height, overall efficiency is low, exhaust index is high, and the double pump dual cycle cooling system is structurally complicated to be repeated, single pump dual cycle cooling system is complicated problems in realization, can satisfy the different parts of the internal-combustion engine cooling system temperature requirements different to cooling liquid.
The present invention can be achieved through the following technical solutions:
A kind of centrifugal cooling waterpump comprises that into water connects dish 1, impeller 2, spiral case 3, bearing 4, bearing support 5, transmission shaft 6, fastening piece 7, high temperature impeller 8, wheel hub 9, low temperature impeller 10, water intake 11, water intake 12, water outlet 13, water outlet 14; Water inlet connects dish 1 and is provided with water intake 11, volute 3 is provided with water intake 12, spiral case 3 connects dish 1 by fastening piece 7 and water inlet and is connected with bearing support 5, interference connection bearing 4 on the bearing support 5, bearing 4 is connected with transmission shaft 6 inner ring interference, and transmission shaft 6 interference connect impeller 2, water pump radially is provided with water outlet 13 and water outlet 14, one side of impeller 2 is provided with high temperature impeller 8, and the opposite side of impeller 2 is provided with low temperature impeller 10, and impeller 2 is axially arranged with wheel hub 9.
Impeller 2 is two-sided impeller, is respectively high temperature impeller 8 and low temperature impeller 10, and blade is respectively 6, the inlet diameter of high temperature impeller 8 is 58mm, and low temperature impeller 10 diameters are 44mm, and shaft hole diameter is 18mm, wheel hub 9 diameters are 24mm, the import laying angle is 36 °, and inlet height is 17mm, and vane thickness is 3.5mm, 45 ° of outlet laying angles, the blade exit height is 10.3mm, and the high temperature impeller outer diameter is 107mm, and the low temperature impeller outer diameter is 105mm.
The present invention compared with prior art has following beneficial effect: the present invention can improve the temperature equalization ability of motor, improve heat transference efficiency, realize the requirement of internal-combustion engine, reduce the exhaust index of internal-combustion engine different parts coolant temperatures, increase overall efficiency, reduce oil consumption.
Description of drawings
Fig. 1 is the structural representation of water pump of the present invention.
Fig. 2 is a blade wheel structure schematic representation of the present invention
Embodiment
A kind of centrifugal cooling waterpump comprises that into water connects dish 1, impeller 2, spiral case 3, bearing 4, bearing support 5, transmission shaft 6, fastening piece 7, high temperature impeller 8, wheel hub 9, low temperature impeller 10, water intake 11, water intake 12, water outlet 13, water outlet 14; Water inlet connects dish 1 and is provided with water intake 11, volute 3 is provided with water intake 12, spiral case 3 connects dish 1 by fastening piece 7 and water inlet and is connected with bearing support 5, interference connection bearing 4 on the bearing support 5, bearing 4 is connected with transmission shaft 6 inner ring interference, and transmission shaft 6 interference connect impeller 2, water pump radially is provided with water outlet 13 and water outlet 14, one side of impeller 2 is provided with high temperature impeller 8, and the opposite side of impeller 2 is provided with low temperature impeller 10, and impeller 2 is axially arranged with wheel hub 9.
Impeller 2 is two-sided impeller, is respectively high temperature impeller 8 and low temperature impeller 10, and blade is respectively 6, the bilateral of vane collocation impeller, and the blade of high temperature and low temperature impeller all adopts antecurvature sweepback form.The inlet diameter of high temperature impeller 8 is 58mm, low temperature impeller 10 diameters are 44mm, shaft hole diameter is 18mm, and wheel hub 9 diameters are 24mm, and the import laying angle is 36 °, inlet height is 17mm, vane thickness is 3.5mm, 45 ° of outlet laying angles, and the blade exit height is 10.3mm, the high temperature impeller outer diameter is 107mm, and the low temperature impeller outer diameter is 105mm.
Spiral case 3 has high temperature and two runners of low temperature, by the Control Shaft section area, draws a section circle, and by the runner of free posing generation water pump, runner and impeller 2 are optimized matching Design; The water outlet of spiral case adopts radially water outlet form.
Water inlet connects the requirement of dish 1 according to the design point operating mode of water pump, and the axial suction chamber of straight-tapered is optimized design, adjusts the tapering of suction chamber, and tapering is adjusted into 10 °, satisfies the energy-efficient requirement of water pump.
The present invention combines simple advantage on the two loop structures of the simple and single pump of double pump binary cycle system, this cooling system by this novel cooling water pump with cooling liquid shunting do not cross mutually, in two cooling circuits of high low temperature of independent parallel, therefore this novel cooling water pump is corresponding has two runners of high low temperature, adopts the radially water-out manners of radially intaking respectively.This cooling waterpump has the running wheel that blade is all installed in both sides, and wherein a side works in the high temperature runner, and opposite side works in the low temperature runner, and hub disk cooperates separately two runners of volute.Impeller adopts efficient blade profile blade.This structure can improve the cavitation performance of water pump simultaneously, helps the water pump balance of axial force more.
Working procedure
Water pump connects water intake two water inlets on the water intake one of dish on 1 and the volute 3 by water inlet, water pump transmission shaft 6 is by external motivational drive, impeller 2 interference and transmission shaft 6 link together, the water that the rotation of impeller 2 enters water intake gets rid of respectively into spiral case 3 high temperature and low temperature water channel, again by water pump water outlet one and water outlet two water outlets radially.

Claims (2)

1. a centrifugal cooling waterpump comprises that into water connects dish (1), impeller (2), spiral case (3), bearing (4), bearing support (5), transmission shaft (6), fastening piece (7), high temperature impeller (8), wheel hub (9), low temperature impeller (10), water intake (11), water intake (12), water outlet (13), water outlet (14); It is characterized in that: water inlet connects dish (1) and is provided with water intake (11), volute (3) is provided with water intake (12), spiral case (3) connects dish (1) by fastening piece (7) and water inlet and is connected with bearing support (5), bearing support (5) is gone up interference connection bearing (4), bearing (4) is connected with transmission shaft (6) inner ring interference, transmission shaft (6) interference connects impeller (2), water pump radially is provided with water outlet (13) and water outlet (14), one side of impeller (2) is provided with high temperature impeller (8), the opposite side of impeller (2) is provided with low temperature impeller (10), and impeller (2) is axially arranged with wheel hub (9).
2. according to the described a kind of centrifugal cooling waterpump of claim 1, it is characterized in that: impeller (2) is two-sided impeller, be respectively high temperature impeller (8) and low temperature impeller (10), blade is respectively 6, the inlet diameter of high temperature impeller (8) is 58mm, low temperature impeller (10) diameter is 44mm, shaft hole diameter is 18mm, and wheel hub (9) diameter is 24mm, and the import laying angle is 36 °, inlet height is 17mm, vane thickness is 3.5mm, 45 ° of outlet laying angles, and the blade exit height is 10.3mm, the high temperature impeller outer diameter is 107mm, and the low temperature impeller outer diameter is 105mm.
CN2010102900092A 2010-09-18 2010-09-18 Centrifugal cooling water pump Pending CN102080672A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2010102900092A CN102080672A (en) 2010-09-18 2010-09-18 Centrifugal cooling water pump
US13/701,829 US20130078087A1 (en) 2010-09-18 2011-09-14 Centrifugal coolant pump
PCT/CN2011/001559 WO2012034359A1 (en) 2010-09-18 2011-09-14 Centrifugal coolant pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010102900092A CN102080672A (en) 2010-09-18 2010-09-18 Centrifugal cooling water pump

Publications (1)

Publication Number Publication Date
CN102080672A true CN102080672A (en) 2011-06-01

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ID=44086813

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010102900092A Pending CN102080672A (en) 2010-09-18 2010-09-18 Centrifugal cooling water pump

Country Status (3)

Country Link
US (1) US20130078087A1 (en)
CN (1) CN102080672A (en)
WO (1) WO2012034359A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012034359A1 (en) * 2010-09-18 2012-03-22 Huang Xiaodong Centrifugal coolant pump
CN104500206A (en) * 2014-11-26 2015-04-08 中国北方发动机研究所(天津) Water pump with double-sided impeller
CN104776036A (en) * 2015-03-27 2015-07-15 中国北方发动机研究所(天津) Method and device for measuring water movement amount of rim clearance of double-faced impeller water pump

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2555063C1 (en) * 2014-09-03 2015-07-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский национальный исследовательский технический университет им. А.Н. Туполева-КАИ" (КНИТУ-КАИ) Housing of liquid channels of internal combustion engine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953150A (en) * 1972-02-10 1976-04-27 Sundstrand Corporation Impeller apparatus
SU1141221A1 (en) * 1983-02-09 1985-02-23 МВТУ им.Н.Э.Баумана Centrifugal pump impeller
CN2133675Y (en) * 1992-06-19 1993-05-19 西安交通大学 Front-bend, back-glance centrifugal impeller of turbine for automobile booster
CN1078023A (en) * 1992-04-30 1993-11-03 浙江义乌石油油泵厂 Double suction, single-stage and self-priming centrifugal pump
US20050103286A1 (en) * 2003-11-18 2005-05-19 Sang Woo Ji Electric twin flow pump apparatus
CN2876383Y (en) * 2006-03-28 2007-03-07 姜万芝 Multiflow passage impeller centrifugal pump
CN201090490Y (en) * 2007-09-29 2008-07-23 上海凯士比泵有限公司 Fore pump with improved structure
CN101457773A (en) * 2008-12-19 2009-06-17 浙江理工大学 Uniaxial paralleling centrifugal pump for simultaneously conveying double mediums

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1229274A (en) * 1916-08-08 1917-06-12 Robert K Jack Duplex centrifugal pump.
US4061187A (en) * 1976-04-29 1977-12-06 Cummins Engine Company, Inc. Dual cooling system
US4385594A (en) * 1981-08-03 1983-05-31 Deere & Company Two-circuit cooling system and pump for an engine
JPH0734231Y2 (en) * 1988-03-23 1995-08-02 アイシン精機株式会社 Two-system cooling water pump
JP3475174B2 (en) * 2000-02-10 2003-12-08 東芝テック株式会社 Electric pump
JP2003269165A (en) * 2002-03-15 2003-09-25 Aisin Seiki Co Ltd Water pump
CN2693998Y (en) * 2003-03-07 2005-04-20 重庆力帆实业（集团）有限公司 Water pump for motorcycle engine
CN201318313Y (en) * 2008-10-27 2009-09-30 潍坊盛瑞动力机械科技有限公司 Pump impeller
DE102008061407B4 (en) * 2008-12-10 2013-09-05 Mtu Friedrichshafen Gmbh Water pump for coolant delivery in a low-temperature and a high-temperature circuit
CN201546798U (en) * 2009-11-03 2010-08-11 荣成市壮发水泵有限公司 Diesel engine cooling pump
CN102080672A (en) * 2010-09-18 2011-06-01 中国兵器工业集团第七○研究所 Centrifugal cooling water pump

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953150A (en) * 1972-02-10 1976-04-27 Sundstrand Corporation Impeller apparatus
SU1141221A1 (en) * 1983-02-09 1985-02-23 МВТУ им.Н.Э.Баумана Centrifugal pump impeller
CN1078023A (en) * 1992-04-30 1993-11-03 浙江义乌石油油泵厂 Double suction, single-stage and self-priming centrifugal pump
CN2133675Y (en) * 1992-06-19 1993-05-19 西安交通大学 Front-bend, back-glance centrifugal impeller of turbine for automobile booster
US20050103286A1 (en) * 2003-11-18 2005-05-19 Sang Woo Ji Electric twin flow pump apparatus
CN2876383Y (en) * 2006-03-28 2007-03-07 姜万芝 Multiflow passage impeller centrifugal pump
CN201090490Y (en) * 2007-09-29 2008-07-23 上海凯士比泵有限公司 Fore pump with improved structure
CN101457773A (en) * 2008-12-19 2009-06-17 浙江理工大学 Uniaxial paralleling centrifugal pump for simultaneously conveying double mediums

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012034359A1 (en) * 2010-09-18 2012-03-22 Huang Xiaodong Centrifugal coolant pump
CN104500206A (en) * 2014-11-26 2015-04-08 中国北方发动机研究所(天津) Water pump with double-sided impeller
CN104776036A (en) * 2015-03-27 2015-07-15 中国北方发动机研究所(天津) Method and device for measuring water movement amount of rim clearance of double-faced impeller water pump
CN104776036B (en) * 2015-03-27 2016-06-15 中国北方发动机研究所(天津) The measuring method of double-impeller water pump rim clearance channeling water amount and device

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Publication number Publication date
US20130078087A1 (en) 2013-03-28
WO2012034359A1 (en) 2012-03-22

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Application publication date: 20110601