CN106567854B - A kind of lubrication oil cooling structure of bearing in pump - Google Patents

A kind of lubrication oil cooling structure of bearing in pump Download PDF

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Publication number
CN106567854B
CN106567854B CN201610938741.3A CN201610938741A CN106567854B CN 106567854 B CN106567854 B CN 106567854B CN 201610938741 A CN201610938741 A CN 201610938741A CN 106567854 B CN106567854 B CN 106567854B
Authority
CN
China
Prior art keywords
bearing
impeller
pump shaft
cooling
pump
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 - Fee Related
Application number
CN201610938741.3A
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Chinese (zh)
Other versions
CN106567854A (en
Inventor
付强
刘刚
朱荣生
张本营
李梦圆
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.)
Jiangsu Beijing Water Equipment Co. Ltd.
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Jiangsu Beijing Water Equipment Co Ltd
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Filing date
Publication date
Application filed by Jiangsu Beijing Water Equipment Co Ltd filed Critical Jiangsu Beijing Water Equipment Co Ltd
Priority to CN201610938741.3A priority Critical patent/CN106567854B/en
Publication of CN106567854A publication Critical patent/CN106567854A/en
Application granted granted Critical
Publication of CN106567854B publication Critical patent/CN106567854B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/06Lubrication
    • F04D29/061Lubrication 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
    • F04D29/04Shafts or bearings, or assemblies thereof
    • F04D29/043Shafts
    • 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
    • F04D29/18Rotors
    • F04D29/20Mounting rotors on shafts
    • 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
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/586Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps

Abstract

The invention belongs to cooling technology fields, it is related to a kind of lubrication oil cooling structure of bearing in pump, not by too many external equipment, pass through the open cycle channel in pump shaft, lubricating oil is allowed to flow in circulation canal under pump shaft itself turning effort, cooling of the heat exchange realization to lubricating oil is carried out with the cooling water in impeller, it is the higher region of temperature that the cooling lubricating oil got well, which is then entered bearing operation, to realize the cooling to bearing.

Description

A kind of lubrication oil cooling structure of bearing in pump
Technical field
The invention belongs to cooling technology field, in particular to the lubrication oil cooling structure of a kind of bearing in pump.
Background technique
With the fast development of modern industry, more and more operating conditions can make centrifugal pump shaft and bearing working in high pressure, height In the environment of speed.The axial workpiece of rotation often combines to complete the transmission of kinetic energy with bearing, bearing as axis support end in axis High speed rotation under generate a large amount of heat, bearing high speed rotation and the frictional heat that generates keep the temperature rise of axis and bearing significantly high Allow operating temperature rise range in it, the adverse consequences such as high temperature will lead to lubricating oil coking, and sealing ring occurs carbon deposit and follows the string. There is an urgent need to be cooled down with the axis of good cooling results and bearing arrangement to it.
CN104421214A discloses a kind of high-temperature pump bearing cooler, and the program includes lubricating oil cooling in bearing housing Circuit and bearing box outer wall air cooling circuit, lubricating oil lubricate oil cooling loop internal circulation flow to bearing ball in bearing housing Surface carries out forced-convection heat transfer, and outside again cools down bearing housing with air-cooled.CN203430866U discloses a kind of horizontal Centrifugal pump shaft and bearing cooler, the dual-cooled measure using internal cooling water pipeline and external cooling water flow conduits pass through spiral shell Revolve the cold of the dual runner form of shape runner and annular channel, the method enhancing horizontal centrifugal pump shaft of annular channel fluting and bearing But effect.Above scheme all uses more complicated external equipment and is cooled down to bearing.And existing bearing in pump Cooling major part is also to be cooled down using external equipment to the lubricating oil in the oil pocket in bearing, to realize to the cold of bearing But.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of lubrication oil cooling structures of bearing in pump.It is lubricated by allowing Oil flows in the circulation canal in pump shaft, cooling of the heat exchange realization to lubricating oil is carried out with the cooling water in impeller, thus real Now to the cooling of bearing.
Realizing technical solution used by above-mentioned purpose is:
A kind of lubrication oil cooling structure of bearing in pump, including pump shaft, impeller, impeller nut, bearing, bearing gland, storage Oil pocket, bearing interstage sleeve, lubrication oil circulation channel, small impeller, cooling-water duct;
The outer peripheral surface lower part of the pump shaft is successively arranged keyway section and thread segment, and the impeller nut is connected through a screw thread It is axially fixed on pump shaft on the thread segment and by impeller, the impeller passes through the radially fixed keyway section in pump shaft of key On.
The bearing is mounted on pump shaft, and bearing gland and bearing rib set compression axis hold and be fixed, the pump shaft, Shoe cream room is formed between bearing and bearing interstage sleeve;The shoe cream room is provided with lubricating oil, and lubricating oil can flow to bearing.
The lubrication oil circulation channel is set in pump shaft, successively by oil inlet section entrance, oil inlet section, and heat exchanging segment, out Oily section, fuel-displaced section of exit composition;
Oil inlet section entrance is placed on shoe cream room, is equipped with small impeller, the rotation direction and pump of blade in oil inlet section entrance The rotation direction of axis is consistent;When pump shaft rotation, impeller rotation makes the lubricating oil in oil pocket enter circulation canal.Fuel-displaced section go out It is placed on the side of the nearly bearing cap of Bearing support at mouthful, and passes through bearing interstage sleeve, makes cooling outflow of lubrication oil, cools down in this way Lubricating oil temperature higher region when can flow directly into bearing working.
The small impeller is cylindrical impeller.
The heat exchanging segment is set at the top of the thread segment of pump shaft, is the Y type groove opened at the top of thread segment, in Y type groove Upper both ends are respectively formed two fuel-displaced section of duct of circulating line along pump shaft aperture, in the lower end edge pump shaft aperture of Y type groove It is respectively formed the oil inlet section of circulating line.
The impeller nut is connected with impeller, and heat exchanging segment is closed, allows lubricating oil in circulation canal Flowing will not leak.
It is also provided with cooling-water duct in the impeller nut, flows the cooling water energy in impeller wherein, is increased cold But the effect of lubricating oil.
The invention has the benefit that
Structure of the invention in pump shaft internal circulation flow, exchanges heat the lubricating oil in bearing with the cooling water in impeller It is cooling, the lubricating oil cooled down is finally sent to the higher region of temperature in bearing, realizes the cooling to bearing.It can be effective It does not need other external equipment using the cooling water for pumping itself effectively to cool down bearing, and can be to a certain degree The upper thermal balance for realizing pump shaft.
Detailed description of the invention
Fig. 1 is bearing in pump lubrication oil cooling structure schematic diagram;
Fig. 2 is heat exchanging segment structural schematic diagram;
Fig. 3 is heat exchanging segment Y type groove structure schematic diagram;
Fig. 4 is small impeller structural schematic diagram;
Description of symbols:
1, pump shaft;2, impeller;3, impeller nut;4, bearing;5, bearing gland;6, shoe cream room;7, bearing interstage sleeve;8, it lubricates Oil circulation passage;9, small impeller;10, cooling-water duct;11, oil inlet section;12, oil inlet section entrance;13, heat exchanging segment;14, go out Oily section;15, fuel-displaced section of exit.
Specific implementation method
The present invention is further described with reference to the accompanying drawings and detailed description.
Fig. 1 shows a kind of embodiment of the lubrication oil cooling structure of bearing in pump of the invention, which includes pump shaft 1, impeller 2, impeller nut 3, bearing 4, bearing gland 5, shoe cream room 6, bearing interstage sleeve 7, lubrication oil circulation channel 8, small impeller 9, cooling-water duct 10, oil inlet section 11, oil inlet section entrance 12, heat exchanging segment 13, fuel-displaced section 14, fuel-displaced section of exit 15.Bearing 4 Be mounted on pump shaft 1, bearing gland 5 and bearing interstage sleeve 7 compress bearing 4 and are fixed, pump shaft 1, bearing 4 and bearing interstage sleeve 7 it Between formed shoe cream room 6, shoe cream room 6 is provided with lubricating oil, and can flow to bearing 4.
Lubrication oil circulation channel 8 is equipped with inside pump shaft 1, lubrication oil circulation channel 8 is successively by oil inlet section entrance 12, oil inlet Section 11, heat exchanging segment 13, fuel-displaced section 14, fuel-displaced section of exit 15 forms, and oil inlet section entrance 12 is equipped with small impeller 9.Such as Fig. 4 Shown, 9 rotation direction of small impeller and pump shaft 1 are consistent, drive small impeller 9 to enter the lubricating oil in shoe cream room 6 when pump shaft 1 rotates Circulation canal 8, flow direction as shown by the arrows in Figure 1 flow successively through 13 fuel-displaced sections 14 of 11 heat exchanging segment of oil inlet section, will finally cool down Lubricating oil enters at bearing 4.
The outer peripheral surface lower part of pump shaft 1 is successively arranged keyway section and thread segment, and impeller nut 3 is threadedly attached in thread segment It above and by impeller 2 is axially fixed on pump shaft, impeller 2 is radially fixed in keyway section by key.
As shown in figure 3, the heat exchanging segment 13 in lubrication oil circulation channel is the Y type groove opened at the top of 1 thread segment of pump shaft, The upper both ends of Y type groove are respectively formed two fuel-displaced section 14 of duct of circulating line along 1 aperture of pump shaft, under Y type groove End is respectively formed the oil inlet section 11 of circulating line along 1 aperture of pump shaft, and then impeller nut 3 is connected with impeller 2, by heat exchanging segment Sealing is closed, and allowing lubricating oil to flow in circulation canal will not leak.
Cooling-water duct 10 is also provided in impeller nut 3, the cooling water in impeller can be wherein under impeller turning effort Flowing, increases the effect of cutting oil.
More than, it is illustrated for the invention patent referring to what embodiment was made, but the present invention is not limited to above-mentioned implementations Example, also comprising the other embodiments or variation within the scope of present inventive concept.

Claims (3)

1. a kind of lubrication oil cooling structure of bearing in pump, it is characterised in that: including pump shaft (1), impeller (2), impeller nut (3), bearing (4), bearing gland (5), shoe cream room (6), bearing interstage sleeve (7), lubrication oil circulation channel (8), small impeller (9), Cooling-water duct (10);
The outer peripheral surface lower part of the pump shaft (1) is successively arranged keyway section and thread segment, and impeller nut (3) is threadedly attached in spiral shell It is axially fixed on pump shaft in line section and by impeller (2), impeller (2) is radially fixed in keyway section by key;Impeller nut (3) In be also provided with cooling-water duct (10);
The bearing (4) is mounted on pump shaft (1), and bearing gland (5) and bearing interstage sleeve (7) compress bearing (4) and be fixed, Shoe cream room (6) are formed between the pump shaft (1), bearing (4) and bearing interstage sleeve (7);The lubrication oil circulation channel (8) is set to pump Axis (1) is internal, and successively by oil inlet section entrance (12), oil inlet section (11), heat exchanging segment (13), fuel-displaced section (14), fuel-displaced section is exported Locate (15) composition;Oil inlet section entrance (12) is placed on shoe cream room, and the heat exchanging segment (13) is set to the thread segment top of pump shaft (1) Portion is respectively formed the two of circulating line along pump shaft (1) aperture at the upper both ends of Y type groove for the Y type groove opened at the top of thread segment The duct of item fuel-displaced section (14) is respectively formed the oil inlet section (11) of circulating line in lower end edge pump shaft (1) aperture of Y type groove;
Fuel-displaced section of exit (15) is placed on the side of the nearly bearing cap of Bearing support, and passes through bearing interstage sleeve (7);The oil inlet section Entrance (12) is equipped with small impeller (9), and unanimously, pump shaft (1) drives when rotating for the rotation direction of small impeller (9) and pump shaft (1) Lubricating oil in shoe cream room (6) is entered circulation canal (8) by small impeller (9).
2. the lubrication oil cooling structure of a kind of bearing in pump according to claim 1, it is characterised in that: the small impeller It (9) is cylindrical impeller.
3. the lubrication oil cooling structure of a kind of bearing in pump according to claim 1, it is characterised in that: the impeller nut (3) it is connected with impeller (2), heat exchanging segment is closed.
CN201610938741.3A 2016-10-25 2016-10-25 A kind of lubrication oil cooling structure of bearing in pump Expired - Fee Related CN106567854B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610938741.3A CN106567854B (en) 2016-10-25 2016-10-25 A kind of lubrication oil cooling structure of bearing in pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610938741.3A CN106567854B (en) 2016-10-25 2016-10-25 A kind of lubrication oil cooling structure of bearing in pump

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CN106567854A CN106567854A (en) 2017-04-19
CN106567854B true CN106567854B (en) 2019-01-29

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109915420A (en) * 2017-12-12 2019-06-21 张颖 From cooling water pump
CN109854515A (en) * 2018-12-27 2019-06-07 枞阳县中邦科技信息咨询有限公司 A kind of engineering plastic pump resistant to high temperature

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596476A (en) * 1983-05-28 1986-06-24 Klein, Schanzlin & Becker Aktiengesellschaft Lubricating system for shaft bearings
CN86105549A (en) * 1985-08-01 1987-02-18 西屋电气公司 Impeller/the rotating assembly of nuclear reactor coolant pump
CN2043685U (en) * 1988-07-26 1989-08-30 沈阳市木工机床厂 Bearing lubrication cooling device
US5046920A (en) * 1989-02-23 1991-09-10 Fuji Electric Co., Ltd. Bearing cooling system in horizontal shaft water turbine generator
CN1097243A (en) * 1992-12-07 1995-01-11 运载器有限公司 Horizontai rotary compressor
JP2003301799A (en) * 2002-04-10 2003-10-24 Shimadzu Corp Turbo type rotary apparatus
CN205639046U (en) * 2016-05-30 2016-10-12 重庆水泵厂有限责任公司 Multistage centrifugal pump bearing parts lubricating oil automatic cycle structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035610B1 (en) * 1970-11-16 1975-11-18
JP4135182B2 (en) * 1997-12-04 2008-08-20 株式会社Ihi Cooling lubrication structure of motor-integrated pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596476A (en) * 1983-05-28 1986-06-24 Klein, Schanzlin & Becker Aktiengesellschaft Lubricating system for shaft bearings
CN86105549A (en) * 1985-08-01 1987-02-18 西屋电气公司 Impeller/the rotating assembly of nuclear reactor coolant pump
CN2043685U (en) * 1988-07-26 1989-08-30 沈阳市木工机床厂 Bearing lubrication cooling device
US5046920A (en) * 1989-02-23 1991-09-10 Fuji Electric Co., Ltd. Bearing cooling system in horizontal shaft water turbine generator
CN1097243A (en) * 1992-12-07 1995-01-11 运载器有限公司 Horizontai rotary compressor
JP2003301799A (en) * 2002-04-10 2003-10-24 Shimadzu Corp Turbo type rotary apparatus
CN205639046U (en) * 2016-05-30 2016-10-12 重庆水泵厂有限责任公司 Multistage centrifugal pump bearing parts lubricating oil automatic cycle structure

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Effective date of registration: 20181128

Address after: 225300 East China Hardware Industrial Park, Jiangyan District, Taizhou City, Jiangsu Province

Applicant after: Jiangsu Beijing Water Equipment Co. Ltd.

Address before: 21 2001 43 Science and Technology Park of 99 Dingmaojing 15th Road, Zhenjiang New District, Jiangsu Province

Applicant before: Zhenjiang Institute of fluid engineering technology, Jiangsu University

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190129

Termination date: 20201025