CN104895935A - Magnetic thrust combination bearing for underwater generator - Google Patents
Magnetic thrust combination bearing for underwater generator Download PDFInfo
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- CN104895935A CN104895935A CN201510277928.9A CN201510277928A CN104895935A CN 104895935 A CN104895935 A CN 104895935A CN 201510277928 A CN201510277928 A CN 201510277928A CN 104895935 A CN104895935 A CN 104895935A
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- magnetic bearing
- bearing seat
- magnetic
- bearing
- retainer
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- Rolling Contact Bearings (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a magnetic thrust combination bearing for an underwater generator. The bearing comprises a magnetic bearing base A, a magnetic bearing base B, and a set of balls mounted on a cage. Magnetic rings are respectively mounted on the magnetic bearing bases A and B. A first annular rolling way and a cage groove are formed in a first annular end surface on the back end surface of the magnetic bearing base B. A second annular rolling way is formed in the front end surface of the magnetic bearing base B. The cage is mounted in the cage groove; and the multiple balls are clamped between the first annular rolling way and the second annular rolling way on the magnetic bearing base A and the magnetic bearing base B. The bearing has the advantages of no need of maintenance, self-lubrication, dirt resistance and corrosion resistance, and can reduce the power loss caused by generation of additional friction force because of increment of axial force in a traditional bearing; and under extreme conditions, the two magnetic bearing bases are not directly contacted, so that the service life of the bearing is prolonged.
Description
Technical field
The present invention relates to a kind of bearing, particularly relate to a kind of magnetic thrust combination bearing.
Background technique
International energy crisis and the environmental deterioration continued be the whole world common faced by a difficult problem, tap a new source of energy, study new power-saving technology, walking to continue can development, is the inevitable choice of the whole mankind.Marine energy is stored energy source maximum on the earth, comes from the gravitation of the sun and the moon, the radiation of the sun and the rotation of the earth, the desirable energy not needing fuel, being clean energy resource free from environmental pollution, is lasting renewable energy sources, belongs to the natural energy resources that can develop.Marine energy has broad application prospects due to its huge reserves, commercial promise.
Bearing pack is the vitals in the ocean power generating device such as Ocean Tidal Current Energy, wave energy.The supporting frame that traditional bearing group is manufactured by metallic material, ball, roller etc. form, even if it is relatively good that motive sealing is done, long-time reliably working is difficult under the bad working environments such as the fine sand suspended in the electrochemical corrosion, seawater of sea water immersion, and need oil lubrication and maintenance, and the nonmetallic bearing groups such as ceramic bearing are difficult to bear large load impact etc., therefore need a kind of novel can adapt to completely sea water immersion environment, moment large load impact can be born, can the bearing pack of reliably working for a long time.
Summary of the invention
Object of the present invention, be to provide a kind of underwater power generator magnetic thrust combination bearing, there is non-maintaining, selflubricating, resistant, decay resistance, and traditional bearing can be reduced produce because axial force increases the problem that additional friction causes power loss, in extreme circumstances, also directly do not contact between two magnetic bearing seats, extend bearing working life.
The technological scheme adopted is:
A kind of underwater power generator magnetic thrust combination bearing, comprises magnetic bearing seat A, magnetic bearing seat B, selflubricating POM ball bearing group, it is characterized in that:
Selflubricating POM ball bearing group, comprises multiple POM ball and retainer, and multiple POM ball is installed in a pocket hole of the correspondence of retainer respectively.
There is the first axis hole at the middle part of magnetic bearing seat A, the ear end face of magnetic bearing seat A has first ring connected in star, is equiped with the first magnet ring in first ring connected in star.First annular end face of the rear end of magnetic bearing seat A there are the first ring raceway and retainer groove.
There is the second axis hole in the middle part of magnetic bearing seat B, the front-end face of magnetic bearing seat B has the second annular groove, in the second annular groove, is equiped with the second magnet ring, the second axis hole and the first axis hole concentric.Second annular end face of magnetic bearing seat B front end has the second ring raceway, and the second ring raceway is corresponding with the first ring raceway.
Retainer is installed in retainer groove, and multiple POM ball is folded between the first ring raceway and the second ring raceway.
Retainer is fixedly connected with by multiple sunk screw with magnetic bearing seat A.
Above-mentioned magnetic bearing seat A and magnetic bearing seat B is respectively nylon magnetic bearing seat A and nylon magnetic bearing seat B.
Two magnet rings and sunk screw adopt water-fast corrosion resistant macromolecular material encapsulation process (macromolecular material is polyacrylate or epoxy resin).
Axle sleeve is had in above-mentioned second axis hole.Axle sleeve is high-strength wear-resisting self-lubricating macromolecule axle sleeve (macromolecule material, axle sleeve is polyether-ether-ketone).
Advantage of the present invention
The present invention aims at underwater power generator design, has excellent corrosion-resistant, self-lubricating property.Magnetic thrust-bearing is non-contact bearing, what apply is homopolar-repulsion principle, along with the minimizing of magnet ring distance, repulsive force strengthens, both can reduce traditional bearing and produce because axial force increases the power loss that additional friction causes, repulsion damping can be formed between relatively rotating parts again, with the form of shaking, accidental axial energy be consumed; Because the existence of middle selflubricating POM ball bearing group, under ultimate state, can not fit together between magnet ring completely, so both can evade the demagnetization risk produced because of infinitely close between magnet ring, bearing pack normal operational attitude can have been kept again.Extension shaft well format in magnetic bearing seat B, significantly can reduce that rotating shaft is non axial beats.The application of non-maintaining bearing pack, can reduce difficulty and the expense of unit maintenance maintenance greatly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the left view of magnetic bearing seat A.
Fig. 3 is the right elevation of magnetic bearing seat B.
Embodiment
A kind of underwater power generator magnetic thrust combination bearing, comprises magnetic bearing seat A1, selflubricating POM ball bearing group 2 and magnetic bearing seat B3, it is characterized in that:
Selflubricating POM ball bearing group 2, comprises multiple POM ball 4 and retainer 5, and multiple POM ball 4 is installed in a pocket hole of the correspondence of retainer 5 respectively.
There is the first axis hole 6 at the middle part of magnetic bearing seat A1, and the ear end face of magnetic bearing seat A1 has first ring connected in star 7, is equiped with the first magnet ring 8 in first ring connected in star 7.First annular end face 9 of the rear end of magnetic bearing seat A1 there are the first ring raceway 10 and retainer groove 11.
There is the second axis hole 12 in the middle part of magnetic bearing seat B3, the front-end face of magnetic bearing seat B3 has in the second annular groove 13, second annular groove 13 and be equiped with the second magnet ring 14, second axis hole 12 and the first axis hole 6 concentric.Second annular end face 15 of magnetic bearing seat B3 front end there is the second ring raceway 16, second ring raceway 16 corresponding with the first ring raceway 10.
Retainer 5 is installed in retainer groove 11, and multiple POM ball 4 is folded between the first ring raceway 10 and the second ring raceway 16.
Retainer 5 is fixedly connected with by multiple sunk screw 17 with magnetic bearing seat A1.
Above-mentioned magnetic bearing seat A1 and magnetic bearing seat B3 is respectively nylon magnetic bearing seat A and nylon magnetic bearing seat B.
Two magnet rings and sunk screw adopt water-fast corrosion resistant macromolecular material encapsulation process (macromolecular material is polyacrylate or epoxy resin).
Axle sleeve is had in above-mentioned second axis hole.Axle sleeve is polyether-ether-ketone by high-strength wear-resisting self-lubricating macromolecule axle sleeve 18(macromolecule material, axle sleeve).
Claims (1)
1. a underwater power generator magnetic thrust combination bearing, comprises magnetic bearing seat A(1), selflubricating POM ball bearing group (2) and magnetic bearing seat B(3), it is characterized in that:
Selflubricating POM ball bearing group (2), comprises multiple POM ball (4) and retainer (5), and multiple POM ball (4) is installed in a pocket hole of the correspondence of retainer (5) respectively;
Magnetic bearing seat A(1) middle part have the first axis hole (6), magnetic bearing seat A(1) ear end face on have first ring connected in star (7), be equiped with the first magnet ring (8) in first ring connected in star (7), magnetic bearing seat A(1) rear end the first annular end face (9) on have the first ring raceway (10) and retainer groove (11);
Magnetic bearing seat B(3) middle part have the second axis hole (12), magnetic bearing seat B(3) front-end face on have the second annular groove (13), the second magnet ring (14) is equiped with in second annular groove (13), second axis hole (12) and the first axis hole (6) concentric, magnetic bearing seat B(3) front end the second annular end face (15) on have the second ring raceway (16), the second ring raceway (16) is corresponding with the first ring raceway (10);
Retainer (5) is installed in retainer groove (11), and multiple POM ball (4) is folded between the first ring raceway (10) and the second ring raceway (16);
Retainer (5) and magnetic bearing seat A(1) be fixedly connected with by multiple sunk screw (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510277928.9A CN104895935B (en) | 2015-05-28 | 2015-05-28 | A kind of underwater power generator magnetic thrust combination bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510277928.9A CN104895935B (en) | 2015-05-28 | 2015-05-28 | A kind of underwater power generator magnetic thrust combination bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104895935A true CN104895935A (en) | 2015-09-09 |
| CN104895935B CN104895935B (en) | 2017-10-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510277928.9A Expired - Fee Related CN104895935B (en) | 2015-05-28 | 2015-05-28 | A kind of underwater power generator magnetic thrust combination bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104895935B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930715A (en) * | 2018-10-10 | 2018-12-04 | 杭州江河水电科技有限公司 | The two-way adjacent relatively prime magnetic force of one kind and roller mixing Thrust Bearing System |
| CN110143437A (en) * | 2019-06-04 | 2019-08-20 | 恒钛(天津)机械制造有限公司 | A kind of device using permanent magnet haul |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6285216A (en) * | 1985-10-11 | 1987-04-18 | Copal Electron Co Ltd | Thrust magnetic bearing for rotary optical deflector |
| US20020089245A1 (en) * | 2000-12-23 | 2002-07-11 | Shixin Chen | Electric spindle motor with magnetic bearing and hydrodynamic bearing |
| JP2007085889A (en) * | 2005-09-22 | 2007-04-05 | Ntn Corp | Bearing with rotation detecting device |
| CN103629233A (en) * | 2013-11-18 | 2014-03-12 | 钱坤喜 | Permanent-magnetic de-loading axial roller bearing |
| CN204267531U (en) * | 2014-12-02 | 2015-04-15 | 南京艾凌永磁调速技术研究有限公司 | A kind of permanent magnetism magnetic suspension bearing |
| CN204985369U (en) * | 2015-05-28 | 2016-01-20 | 沈阳风电设备发展有限责任公司 | Magnetism thrust combination bearing for generator under water |
-
2015
- 2015-05-28 CN CN201510277928.9A patent/CN104895935B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6285216A (en) * | 1985-10-11 | 1987-04-18 | Copal Electron Co Ltd | Thrust magnetic bearing for rotary optical deflector |
| US20020089245A1 (en) * | 2000-12-23 | 2002-07-11 | Shixin Chen | Electric spindle motor with magnetic bearing and hydrodynamic bearing |
| JP2007085889A (en) * | 2005-09-22 | 2007-04-05 | Ntn Corp | Bearing with rotation detecting device |
| CN103629233A (en) * | 2013-11-18 | 2014-03-12 | 钱坤喜 | Permanent-magnetic de-loading axial roller bearing |
| CN204267531U (en) * | 2014-12-02 | 2015-04-15 | 南京艾凌永磁调速技术研究有限公司 | A kind of permanent magnetism magnetic suspension bearing |
| CN204985369U (en) * | 2015-05-28 | 2016-01-20 | 沈阳风电设备发展有限责任公司 | Magnetism thrust combination bearing for generator under water |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930715A (en) * | 2018-10-10 | 2018-12-04 | 杭州江河水电科技有限公司 | The two-way adjacent relatively prime magnetic force of one kind and roller mixing Thrust Bearing System |
| CN108930715B (en) * | 2018-10-10 | 2020-06-19 | 杭州江河水电科技有限公司 | Bidirectional adjacent coprime magnetic force and roller hybrid thrust bearing system |
| CN110143437A (en) * | 2019-06-04 | 2019-08-20 | 恒钛(天津)机械制造有限公司 | A kind of device using permanent magnet haul |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104895935B (en) | 2017-10-13 |
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