CN104158337B - A kind of half directly-drive permanent magnet wind generating machine bearing lubricating system - Google Patents
A kind of half directly-drive permanent magnet wind generating machine bearing lubricating system Download PDFInfo
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- CN104158337B CN104158337B CN201410414128.2A CN201410414128A CN104158337B CN 104158337 B CN104158337 B CN 104158337B CN 201410414128 A CN201410414128 A CN 201410414128A CN 104158337 B CN104158337 B CN 104158337B
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Abstract
The present invention relates to bearing lubrication system, be specially a kind of half directly-drive permanent magnet wind generating machine bearing lubricating system. A kind of half directly-drive permanent magnet wind generating machine bearing lubricating system, comprises end cap, bearing, bearing end cover, internal bearing cover with bearing chamber; The position of end cap between bearing lateral surface and bearing end cover inner side protruded to shaft axis direction border and formed oil scraper ring, and the oil sealing position corresponding with oil scraper ring is to extending to form disc away from shaft axis direction one side; Between oil scraper ring, disc and bearing lateral surface, form the waste and old grease memory space corresponding with bearing ball position; Space between oil scraper ring and disc forms waste and old grease passing away; Between the inwall of outer wall, oil sealing outer wall and the bearing end cover of end cap, form the waste and old lubricating grease collection space being connected with waste and old grease passing away. The present invention, due to smooth and easy bearing lubrication passage, effectively reduces the bearing of wind power generator heating that bearing too much causes due to lubricating grease accumulation at work.
Description
Technical field
The present invention relates to bearing lubrication system, be specially a kind of half directly-drive permanent magnet wind generating machine bearing lubricating system.
Background technology
Along with the fast development of wind-powered electricity generation industry, the rapid expansion of wind turbine kludge capacity, in the wind-powered electricity generation unit moving in wind power plant, the fault of each large parts and components also rolls up. The bearing fault of wind-driven generator is exactly one of them.
More than bearing fault accounts for the 60-70% of wind-driven generator fault, and cause in the reason of bearing fault have again the reasons such as 35% left and right is obstructed by lubricating system row fat passage, insufficient lubrication to cause bearing heating to cause. Therefore, ensure that bearing lubrication is the wind-powered electricity generation unit pith in Maintenance Significant Items at the scene. The bearing lubrication of current powerful wind-driven generator all adopts self-acting lubricator lubricated, it is that the lubricating grease amount mean allocation that every former cause 3 months or 6 months are supplemented was once supplemented once by every 10-20 hour, realize supplementing at any time of lubricating grease, ensured the proper lubrication of bearing. But, after adopting self-acting lubricator lubricated, only solved the lubricating grease supplementary question in regular maintenance, and bearing is not solved because of the fault that the reasons such as insufficient lubrication, row's fat passage be obstructed cause, and has brought new problem.
The large-scale half directly-drive permanent magnet wind generating machine of current many MW class, is not applied also in advanced development on a large scale in China; So the bearing arrangement of the large-scale half-direct-drive wind driven generator of many MW class is used for reference the bearing arrangement of MW class double feed wind power generator and cage modle wind-driven generator mostly. (seeing figure bis-)
Existing fan bearing mounting structure is as follows: comprise with the end cap of bearing chamber, be arranged on the indoor bearing of bearing with end cover, be separately positioned on bearing end cover and the internal bearing cover of bearing with end cover indoor and outdoor both sides; On bearing, be positioned on the position of bearing end cover inner side and be arranged with oil sealing; Between the surface that oil sealing is corresponding with bearing ball and bearing, there is gap and forms waste and old grease memory space, between oil sealing outer and bearing end cover medial surface, form waste and old grease passing away, in bearing end cover, have the cavity being connected with waste and old grease passing away and form waste and old lubricating grease collection space, bearing end cover bottom is provided with the oil-out being connected with waste and old grease memory space.
Lubricating grease passes through: the lubrication channel that outer bearing cover → end cap → inside cap → bearing → oil sealing forms bearing is jointly lubricated bearing, passes through simultaneously: bearing → oil sealing → outer bearing cover jointly forms waste and old grease memory space, row's fat passage and waste and old lubricating grease collection space waste and old lubricating grease is discharged.
The shortcoming of prior art: 1, existing bearing lubrication system structure can not in time, effectively discharge in bearing running, produce waste and old lubricating grease.
Because large-scale many MW class wind turbines group adopts self-acting lubricator supplemental lubrication fat, a few hours in the time interval supplement once. And in existing bearing arrangement lubricating system: the waste and old lubricating grease memory space of a. little (3-5mm) (9 places in figure bis-); The size little (4-7mm) (10 places in figure bis-) of b. arranging fat passage, c. waste and old lubricating grease collection space compactness (20x30mm) (11 places in figure bis-) etc., cause can not in time, effectively discharge in bearing running, produce waste and old lubricating grease. Bearing is operation for a long time under this condition, very easily causes because waste and old lubricating grease accumulation increases gradually, causes bearing heating, causes the fault that bearing temperature rise is high, and then causes as larger bearing faults such as bearing lockings.
2, be unfavorable for the preservation of lubricating grease.
Because memory space is little, can not preserve unnecessary lubricating grease, easily make the fluid in lubricating grease run off, can not make lubricating grease participate in secondary lubricated, easily cause that operating bearing lubrication is bad, also can cause bearing fault.
3, affect supplementing of new lubricating grease.
Because row's fat passage is not smooth, waste and old lubricating grease can not be discharged in time, and supplementing of new lubricating grease will be affected, and can cause part lubricating grease (grease) from gap seepage between internal bearing cover and rotating shaft, internal bearing cover and end cap, pollutes.
In sum, the problem existing for prior art, in the urgent need to a kind of novel bearing lubricating system that can reduce bearing temperature rising fault.
Summary of the invention
The present invention solves the technical problem that current wind power generating set bearing row fat passage does not freely cause bearing temperature rising fault, and a kind of bearing of wind power generator lubricating system is provided.
The present invention adopts following technical scheme to realize: a kind of half directly-drive permanent magnet wind generating machine bearing lubricating system, comprises with the end cap of bearing chamber, is arranged on the indoor bearing of bearing with end cover, is separately positioned on bearing end cover and the internal bearing cover of bearing with end cover indoor and outdoor both sides; Rotating shaft through bearing is arranged with oil sealing in the part that is positioned at bearing end cover inner side; The position of end cap between bearing lateral surface and bearing end cover inner side protruded to shaft axis direction border and formed oil scraper ring, and the oil sealing position corresponding with oil scraper ring is to extending to form disc away from shaft axis direction one side; Between oil scraper ring, disc and bearing lateral surface, form the waste and old grease memory space corresponding with bearing ball position; Space between oil scraper ring and disc forms waste and old grease passing away; Between the inwall of outer wall, oil sealing outer wall and the bearing end cover of end cap, form the waste and old lubricating grease collection space being connected with waste and old grease passing away; On bearing end cover, have the oil-out being communicated with waste and old lubricating grease collection space; In described waste and old grease memory space, between oil sealing and end cap inwall, spacing is 55 ± 5mm, between oil scraper ring and disc and bearing outside surface, spacing is 18 ~ 20mm, between oil scraper ring and disc, gap is 20 ~ 25mm, spacing between end cap outer surface and bearing end cover inwall is 30 ~ 35mm, and waste and old lubricating grease collection space oil-out is of a size of 70 ± 5mm to oil sealing top.
Bearing lubrication system structure of the present invention, in regular maintenance, adopt the feature of self-acting lubricator in conjunction with wind power generating set, adopt open bearing lubrication row fat passage, can make waste and old lubricating grease that bearing of wind power generator produces in running smoothly, discharge in time, and the contacting of disengaging and bearing, reduce the bearing heating frequency in wind-driven generator running; Meanwhile, can accept smoothly again the new lubricating grease that supplemented by automatic lubricator. Therefore, the bearing lubricating oil circuit of wind-driven generator that the present invention is smooth and easy, has reduced the stopping accident frequency that wind power generating set causes because of dynamo bearing temperature rise fault.
For bearing of wind power generator in running because waste and old lubricating grease accumulates the high fault of bearing temperature rise too much causing, the present invention, in the situation that not changing other structures, has adopted novel bearing lubricating system, realizes and reduces bearing temperature rise high fault. (specifically seeing Fig. 1).
1, the waste and old lubricating grease storage area of larger volume (9 places in Fig. 1); 2, the loose waste and old lubricating grease row's fat passage (10 places in Fig. 1) of open, large scale; 3, the large volume collection space of waste and old lubricating grease (11 places in Fig. 1).
Further, the disc on oil sealing is incline structure and is 55 ~ 65 ° of angles with the shaft axis of ecto-entad near the medial surface of bearing.
Wherein, 1, the waste and old lubricating grease storage area of larger volume (in Fig. 1 9), not only can effectively store lubricating grease, reduce bearing loss of fluid oil in lubricating grease in running, also can ensure that lubricating grease is excessive in the situation that, can alleviate the high fault of bearing temperature rise too much causing because of lubricating grease simultaneously.
2, the loose waste and old lubricating grease row fat channel size of open, large scale (in Fig. 1 10), be for waste and old lubricating grease can be in time, discharge smoothly, do not make the too much accumulation and cause the fault that bearing temperature rise is high of waste and old lubricating grease.
3, become the bearing enclosure of angle shape in running with level, utilize the effect of centrifugal force that unnecessary lubricating grease is added in bearing and gone, make lubricating grease participate in secondary lubricated, make bearing in running, obtain lubricated supplement (Fig. 3).
4, the collection space of the large volume of waste and old lubricating grease (in Fig. 1 11) is can collect fully, swimmingly oil catcher in order to make to depart from the waste and old lubricating grease contacting with bearing.
The present invention is due to smooth and easy bearing lubrication passage; effectively reduce the bearing of wind power generator heating that bearing too much causes due to lubricating grease accumulation at work; eliminate potential faults; and then reduce the wind power generating set stopping accident causing because of bearing of wind power generator fault; improve the operating efficiency of wind power generating set; increase generated energy, improved owner's economic benefit, reduced the economic loss causing because of bearing fault simultaneously.
Brief description of the drawings
The structural representation of the lubricating system after Fig. 1 improvement of the present invention.
The structural representation of conventional lubricating system on the current wind-driven generator of Fig. 2.
The local structure for amplifying schematic diagram of Fig. 3 disc of the present invention inclination angle part.
The local structure for amplifying schematic diagram of Fig. 4 lubricating system.
1-end cap, 2-bearing, 3-bearing end cover, 4-internal bearing cover, 5-rotating shaft, 6-oil sealing, 7-oil scraper ring, 8-disc, the waste and old grease memory space of 9-, the waste and old grease passing away of 10-, the waste and old lubricating grease collection space of 11-, 12-oil-out.
Detailed description of the invention
A kind of half directly-drive permanent magnet wind generating machine bearing lubricating system, comprises with the end cap 1 of bearing chamber, is arranged on bearing 2 in end cap 1 bearing chamber, is separately positioned on bearing end cover 3 and the internal bearing cover 4 of both sides inside and outside end cap 1 bearing chamber; Rotating shaft 5 through bearing 2 is arranged with oil sealing 6 in the part that is positioned at bearing end cover 3 inner sides; The position of end cap 1 between bearing 2 lateral surfaces and bearing end cover 3 inner sides protruded to shaft axis direction border and formed oil scraper ring 7, and oil sealing 6 position corresponding with oil scraper ring 7 is to extending to form disc 8 away from rotating shaft 5 axis direction one sides; Between oil scraper ring 7, disc 8 and bearing 2 lateral surfaces, form the waste and old grease memory space 9 corresponding with bearing ball position; Space between oil scraper ring 7 and disc 8 forms waste and old grease passing away 10; Between the inwall of outer wall, oil sealing 6 outer walls and the bearing end cover 3 of end cap 1, form the waste and old lubricating grease collection space 11 being connected with waste and old grease passing away 10; On bearing end cover 3, have the oil-out 12 being communicated with waste and old lubricating grease collection space 11; In described waste and old grease memory space 9, between oil sealing 6 and end cap 1 inwall, spacing c is 55 ± 5mm, between oil scraper ring 7 and disc 8 and bearing 2 outer surfaces, spacing b is 18 ~ 20mm, between oil scraper ring 7 and disc 8, gap d is 20 ~ 25mm, spacing f between end cap 1 outer surface and bearing end cover 3 inwalls is 30 ~ 35mm, waste and old lubricating grease collection space 11 oil-outs to the size e on oil sealing 6 tops be 70 ± 5mm.
Disc 8 on oil sealing 6 is incline structure and is 55 ~ 65 ° of angles with the shaft axis of ecto-entad near the medial surface of bearing 2. (in Fig. 3 shown in a).
The present invention passes through waste and old grease memory space 9 in lubricating system, the size of waste and old grease passing away 10 and waste and old lubricating grease collection space 11 is improved, smooth and easy bearing lubrication passage, effectively reduce the bearing of wind power generator heating that bearing too much causes due to lubricating grease accumulation at work, eliminated potential faults. Fig. 4 (being arranged in the partial structurtes schematic diagram of rotating shaft below in Fig. 1) can clearly find out the each change in size figure after improvement; The present invention simultaneously has also made improvement (structure of disc 8) to the structure of oil sealing, as shown in Figure 3; Waste and old grease memory space 9 is corresponding with the position of bearing ball; The incline structure of disc 8 can utilize the effect of centrifugal force that unnecessary lubricating grease is added in bearing and gone, make lubricating grease participate in secondary lubricated in.
Claims (2)
1. a half directly-drive permanent magnet wind generating machine bearing lubricating system, comprises end cap (1) with bearing chamber, is arranged on bearing (2) in end cap (1) bearing chamber, is separately positioned on bearing end cover (3) and the internal bearing cover (4) of the inside and outside both sides of end cap (1) bearing chamber; Rotating shaft (5) through bearing (2) is arranged with oil sealing (6) in the part that is positioned at bearing end cover (3) inner side; It is characterized in that, end cap (1) is positioned at position between bearing (2) lateral surface and bearing end cover (3) inner side and protrudes to shaft axis direction border and form oil scraper ring (7), and oil sealing (6) position corresponding with oil scraper ring (7) is to extending to form disc (8) away from rotating shaft (5) axis direction one side; Between oil scraper ring (7), disc (8) and bearing (2) lateral surface, form the waste and old grease memory space (9) corresponding with bearing ball position; Space between oil scraper ring (7) and disc (8) forms waste and old grease passing away (10); Between the inwall of outer wall, oil sealing (6) outer wall and the bearing end cover (3) of end cap (1), form the waste and old lubricating grease collection space (11) being connected with waste and old grease passing away (10); On bearing end cover (3), have the oil-out (12) being communicated with waste and old lubricating grease collection space (11); In described waste and old grease memory space (9), between oil sealing (6) and end cap (1) inwall, spacing is 55 ± 5mm, between oil scraper ring (7) and bearing (2) outer surface, spacing is 18 ~ 20mm, between disc (8) and bearing (2) outer surface, spacing is 18 ~ 20mm, between oil scraper ring (7) and disc (8), gap is 20 ~ 25mm, spacing between end cap (1) outer surface and bearing end cover (3) inwall is 30 ~ 35mm, and waste and old lubricating grease collection space (11) oil-out to oil sealing (6) top is of a size of 70 ± 5mm.
2. a kind of half directly-drive permanent magnet wind generating machine bearing lubricating system as claimed in claim 1, is characterized in that, the disc (8) on oil sealing (6) is incline structure and is 55 ~ 65 ° of angles with the shaft axis of ecto-entad near the medial surface of bearing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410414128.2A CN104158337B (en) | 2014-08-21 | 2014-08-21 | A kind of half directly-drive permanent magnet wind generating machine bearing lubricating system |
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| CN201410414128.2A CN104158337B (en) | 2014-08-21 | 2014-08-21 | A kind of half directly-drive permanent magnet wind generating machine bearing lubricating system |
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| CN104158337A CN104158337A (en) | 2014-11-19 |
| CN104158337B true CN104158337B (en) | 2016-05-11 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451893A (en) * | 2016-12-02 | 2017-02-22 | 中车永济电机有限公司 | Novel bearing chamber structure of motor |
| CN107795381B (en) * | 2017-11-23 | 2019-03-22 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of lubricating oil collection structure of the bearing radial direction fuel feeding between rotor |
| CN108953386A (en) * | 2018-08-06 | 2018-12-07 | 中车株洲电机有限公司 | A kind of motor and its bearing lubrication sealing structure |
| CN109412319A (en) * | 2018-12-21 | 2019-03-01 | 卧龙电气南阳防爆集团股份有限公司 | The fast heavy-duty motor of a kind of low noise, cooling |
| CN112003412B (en) * | 2020-09-01 | 2021-08-20 | 青岛中加特电气股份有限公司 | End cover structure of motor bearing |
| CN113410939B (en) * | 2021-05-31 | 2023-03-14 | 山东风发新能源科技有限公司 | Motor and electric equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011080498A (en) * | 2009-10-05 | 2011-04-21 | Ntn Corp | Wheel bearing device |
| JP5978568B2 (en) * | 2011-07-23 | 2016-08-24 | 株式会社ジェイテクト | Rotating shaft device |
| CN203404120U (en) * | 2013-06-28 | 2014-01-22 | 湖南天雁机械有限责任公司 | Sealing structure of turbocharger compressor |
| CN103398106B (en) * | 2013-07-31 | 2015-07-08 | 东方电气（乐山）新能源设备有限公司 | Wind driven generator bearing lubricating structure |
| CN203517250U (en) * | 2013-09-29 | 2014-04-02 | 廖云霞 | Anti-oil-leakage lubricating mechanism applied to bearing |
| CN204013030U (en) * | 2014-08-21 | 2014-12-10 | 永济新时速电机电器有限责任公司 | A kind of half directly-drive permanent magnet wind generating machine bearing lubricating system |
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Address after: 044500 Yongji City, Shanxi Province, the city of motor street, No. 18, No. Patentee after: CRRC YONGJI ELECTRIC CO., LTD. Address before: 044500 Yongji City, Shanxi Province, the city of motor street, No. 18, No. Patentee before: Yongji Xinshisu Motor Electrical Appliance Co., Ltd. |
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