CN202561055U - Bearing seal device applied to wind power generation unit main shaft system - Google Patents
Bearing seal device applied to wind power generation unit main shaft system Download PDFInfo
- Publication number
- CN202561055U CN202561055U CN2012200651314U CN201220065131U CN202561055U CN 202561055 U CN202561055 U CN 202561055U CN 2012200651314 U CN2012200651314 U CN 2012200651314U CN 201220065131 U CN201220065131 U CN 201220065131U CN 202561055 U CN202561055 U CN 202561055U
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- bearing end
- bearing
- main shaft
- end cap
- end cover
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- Expired - Fee Related
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- Y02E10/722—
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- Sealing Of Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model provides a bearing seal device with excellent seal effect applied to a wind power generation unit main shaft system, which comprises a front shaft sleeve, a rear shaft sleeve, a front bearing end cover, a rear bearing end cover, a front pressing cover and a rear pressing cover, wherein the front shaft sleeve and the rear shaft sleeve are arranged on a main shaft and arranged on the two ends of a main shaft bearing, the front bearing end cover and the rear bearing end cover are fixed on the two sides of a main bearing seat, the front pressing cover and the rear pressing cover are respectively arranged on the outer sides of the front bearing end cover and the rear bearing end cover, a front cavity is enclosed between the front pressing cover, the front bearing end cover and the front shaft sleeve, a front oil seal with a secondary lip is arranged in the front cavity, a rear cavity is enclosed between the rear pressing cover, the rear bearing end cover and the rear shaft sleeve, and a first rear oil seal without a secondary lip and a second rear oil seal with a secondary lip are arranged in the rear cavity body. The bearing seal device with excellent seal effect applied to the wind power generation unit main shaft system greatly improves seal effect, protects a fan main shaft bearing from being polluted by water and grains of sand and abraded by fragments, eliminates a hidden danger that bearings are burn down, and improves cleanliness conditions in the inner portion of a fan engine room and a frame tower drum.
Description
Technical field
The utility model relates to a kind of associated sealing arrangement for bearings, the associated sealing arrangement for bearings of the asynchronous Variable Speed Wind Power Generator main shaft of especially a kind of MW class double-fed type system.
Background technique
The most widely used wind power generating set of China is a double-fed type asynchronous wind driven generator group at present.Its feature is that the power that wind wheel is produced under wind is to pass to gear-box through main shaft, passes to generator by gear-box again.Main shaft bearing has just born the axial and radial load from wind wheel like this, becomes one of core component of wind power generating set.Therefore, main shaft bearing must have high reliability and long life, and good sealing system is the precondition that guarantees main shaft bearing performance and safe operating life.Sealing is in order to stop lubricating grease from bearing, to run off, also in order to prevent intrusion bearings such as extraneous dust, moisture, not have rational sealing will influence the operating life of bearing greatly.The main shaft seal form of existing most of wind power generating set mainly contains V-type rubber ring, felt sealing; The forms such as labyrinth sealing that also have more complicated; These forms can play good effect for keeping out extraneous dust in the sealing; But for preventing that aspects such as lubricating grease leakage are unsatisfactory, all there is the phenomenon of a large amount of leakage of oils in many blower fans.A large amount of leakage of oils not only cause a large amount of wastes of lubricating grease, burn out a bearing, even cause stopping accident.
The model utility content
The utility model provides a kind of associated sealing arrangement for bearings that is applied to wind driven generation set main shaft system of good sealing effect.
Realize the associated sealing arrangement for bearings that is applied to wind driven generation set main shaft system of the utility model purpose; Comprise and being installed on the main shaft; Be positioned at the front shaft sleeve and the rear axle housing at main shaft bearing two ends, be fixed on the fore bearing end cap and the rear bearing end cap of main bearing seat both sides, be installed in the preceding gland and the rear pressing cover in said fore bearing end cap and the rear bearing end cap outside respectively; Cavity before surrounding one between gland, fore bearing end cap and the front shaft sleeve before said; Be provided with Front oil seal in the cavity before said, surround a rear chamber between said rear pressing cover, rear bearing end cap and the rear axle housing, be provided with first Rear oil seal of not being with secondary lip and second Rear oil seal in the said rear chamber with secondary lip with secondary lip.
Said fore bearing end cap and rear bearing end cap pass through bolt through being bolted on the main bearing seat between said preceding gland and fore bearing end cap, rear pressing cover and the rear bearing end cap.
The beneficial effect of the associated sealing arrangement for bearings that is applied to wind driven generation set main shaft system of the utility model is following:
1, the associated sealing arrangement for bearings of the utility model; Between bearing (ball) cover, axle sleeve and the gland of main shaft bearing, adopt oil sealing sealing; The forward end seal form is single oil sealing of band seal lip and dustproof secondary lip; The back-end sealing form is the dual-oil seal combination seal mode of band seal lip oil sealing with band seal lip and dustproof secondary lip oil sealing, and it has reduced the leakage of main shaft bearing lubricating grease, has greatly improved sealing effect.
2, the oil sealing of the utility model in the front end and back end all adopted the oil sealing of the dustproof secondary lip of band, prevented further that not only lubricating grease from leaking, and protection blower fan main shaft bearing is avoided the pollution of water, the grains of sand and the wearing and tearing of chip.
3, the utility model has reduced a large amount of leakages of main shaft bearing lubricating grease, has therefore eliminated the hidden danger that bearing burns.
4, the utility model has reduced a large amount of leakages of main shaft bearing lubricating grease, has therefore improved the clean condition of blower fan engine room inside and frame tower tube.
Description of drawings
Fig. 1 is the structural representation of the associated sealing arrangement for bearings that is applied to wind driven generation set main shaft system of the utility model.
Embodiment
As shown in Figure 1; The associated sealing arrangement for bearings that is applied to wind driven generation set main shaft system of the utility model; Comprise being installed on the main shaft 2, be positioned at the front shaft sleeve 11 and rear axle housing 12 at main shaft bearing 3 two ends, be fixed on the fore bearing end cap 6 and rear bearing end cap 10 of main bearing seat 1 both sides; Be installed in the preceding gland 5 and rear pressing cover 9 in the said fore bearing end cap 6 and rear bearing end cap 10 outsides respectively; Be provided with Front oil seal between gland 5, fore bearing end cap 6 and the front shaft sleeve 11 before said, surround a preceding cavity between said rear pressing cover, rear bearing end cap and the rear axle housing, be provided with Front oil seal 4 in the said preceding cavity with secondary lip with secondary lip; Surround a rear chamber between said rear pressing cover 9, rear bearing end cap 10 and the rear axle housing 12, be provided with first Rear oil seal 7 of not being with secondary lip and second Rear oil seal 8 in the said rear chamber with secondary lip.
Said fore bearing end cap 6 and rear bearing end cap 10 pass through bolt through being bolted on the main bearing seat 1 between said preceding gland 5 and fore bearing end cap 6, rear pressing cover 9 and the rear bearing end cap 10.
The working principle of the associated sealing arrangement for bearings that is applied to wind driven generation set main shaft system of the utility model is following:
Being respectively equipped with bearing (ball) cover, axle sleeve and gland in the both sides of the main shaft bearing between main shaft and main bearing seat, is oil sealing sealing between said bearing (ball) cover, axle sleeve and the gland, and the forward end seal form is single oil sealing, and the back-end sealing form is a dual-oil seal.The Front oil seal band seal lip of main shaft bearing forward end seal and dustproof secondary lip.The dual-oil seal of main shaft bearing back-end sealing is made up of first Rear oil seal and second Rear oil seal, and first Rear oil seal only is with seal lip, the second Rear oil seal band seal lip and dustproof secondary lip.
Wherein, Gland and fore bearing end cap and front shaft sleeve before the front end of said main bearing seat is provided with; The rear end is provided with rear pressing cover and rear bearing end cap and rear axle housing; Surround cavity between main bearing seat, main shaft, preceding gland, fore bearing end cap, front shaft sleeve, rear pressing cover, rear bearing end cap and the rear axle housing, said main shaft bearing is contained in this cavity, and is set on the main shaft; Said fore bearing end cap is fixed on the main bearing seat through Bolt Connection, and fore bearing end cap and preceding gland are also through being provided with the Front oil seal sealing between Bolt Connection and the front shaft sleeve; Said rear bearing end cap is fixed on the main bearing seat through Bolt Connection, and rear bearing cover and rear pressing cover are also through being provided with the combination seal that first Rear oil seal adds second Rear oil seal between Bolt Connection and the rear axle housing.
The utility model is respectively equipped with bearing (ball) cover, axle sleeve and gland in the both sides of main shaft bearing, is oil sealing sealing between said bearing (ball) cover, axle sleeve and the gland.Oil sealing band seal lip, its material is a nitrile butadiene rubber, and has spring band.Its feature is: seal lip is flexible elastomer, under the influence of mechanical vibration and sealing-fluid pressure change, still can keep stable seal action, and plays a lip and the effect of surface-stable contact condition of keeping.Spring band can improve the impacting force of sealing lip to axle, works to keep this impacting force.The lip end is oblique wedge shape, and the place connects the last item surface in the end, plays a part fluid-encapsulated.Because the environment of wind-driven generator operation is all very abominable usually, there are a large amount of pollutions such as dust, salt fog, the grains of sand in the air, so the oil sealing that adopts not only has seal lip, also have dustproof secondary lip.This oil sealing both can reach the effect that prevents that lubricating grease from leaking outside, and significantly improved sealing effect, can protect the blower fan main shaft bearing to avoid water again, salt fog, the pollution of the grains of sand and the wearing and tearing of chip.
Because the elevation angle that the existence of blower fan main shaft and horizontal fan position is 5 ° is so the grease that the rear bearing end cap is leaked out in actual motion is higher than the fore bearing end cap far away.Therefore, need to strengthen the sealability of rear bearing end cap.So the back-end sealing form adopts dual-oil seal, be to combine, to reach the effect that prevents that lubricating grease from leaking outside by Rear oil seal 1 and Rear oil seal 2.
Embodiment recited above describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Design under the spiritual prerequisite not breaking away from the utility model; Various distortion and improvement that the common engineers and technicians in related domain make the utility model technological scheme all should fall in the protection domain that claims of the utility model confirm.
Claims (2)
1. one kind is applied to the associated sealing arrangement for bearings that wind driven generation set main shaft is; It is characterized in that: comprise being installed on the main shaft; Be positioned at the front shaft sleeve and the rear axle housing at main shaft bearing two ends, be fixed on the fore bearing end cap and the rear bearing end cap of main bearing seat both sides, be installed in the preceding gland and the rear pressing cover in said fore bearing end cap and the rear bearing end cap outside respectively; Cavity before surrounding one between gland, fore bearing end cap and the front shaft sleeve before said; Be provided with Front oil seal in the cavity before said, surround a rear chamber between said rear pressing cover, rear bearing end cap and the rear axle housing, be provided with first Rear oil seal of not being with secondary lip and second Rear oil seal in the said rear chamber with secondary lip with secondary lip.
2. the associated sealing arrangement for bearings that is applied to wind driven generation set main shaft system according to claim 1; It is characterized in that: said fore bearing end cap and rear bearing end cap pass through bolt through being bolted on the main bearing seat between said preceding gland and fore bearing end cap, rear pressing cover and the rear bearing end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200651314U CN202561055U (en) | 2012-02-27 | 2012-02-27 | Bearing seal device applied to wind power generation unit main shaft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200651314U CN202561055U (en) | 2012-02-27 | 2012-02-27 | Bearing seal device applied to wind power generation unit main shaft system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202561055U true CN202561055U (en) | 2012-11-28 |
Family
ID=47210714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200651314U Expired - Fee Related CN202561055U (en) | 2012-02-27 | 2012-02-27 | Bearing seal device applied to wind power generation unit main shaft system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202561055U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295749A (en) * | 2014-09-29 | 2015-01-21 | 内蒙古久和能源科技有限公司 | Bearing sealing device |
| CN105333017A (en) * | 2014-07-02 | 2016-02-17 | 通用电气公司 | Sealing device, wind-driven generator and grease collecting method |
| CN106625060A (en) * | 2016-12-29 | 2017-05-10 | 芜湖新兴铸管有限责任公司 | DN350-800 casting pipe mouthing internal grinding rod assembly |
| CN110630743A (en) * | 2019-08-26 | 2019-12-31 | 江门市鑫辉特种密封科技有限公司 | Main shaft sealing device for wind turbine generator |
-
2012
- 2012-02-27 CN CN2012200651314U patent/CN202561055U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333017A (en) * | 2014-07-02 | 2016-02-17 | 通用电气公司 | Sealing device, wind-driven generator and grease collecting method |
| CN105333017B (en) * | 2014-07-02 | 2017-12-15 | 通用电气公司 | Sealing device, wind-driven generator and Grease Collection method |
| CN104295749A (en) * | 2014-09-29 | 2015-01-21 | 内蒙古久和能源科技有限公司 | Bearing sealing device |
| CN104295749B (en) * | 2014-09-29 | 2016-09-21 | 内蒙古久和能源装备有限公司 | A kind of associated sealing arrangement for bearings |
| CN106625060A (en) * | 2016-12-29 | 2017-05-10 | 芜湖新兴铸管有限责任公司 | DN350-800 casting pipe mouthing internal grinding rod assembly |
| CN110630743A (en) * | 2019-08-26 | 2019-12-31 | 江门市鑫辉特种密封科技有限公司 | Main shaft sealing device for wind turbine generator |
| CN110630743B (en) * | 2019-08-26 | 2021-06-22 | 江门市鑫辉密封科技有限公司 | Main shaft sealing device for wind turbine generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20130227 |