CN110725936A - Oil suction port bubble filtering structure of wind power gear box - Google Patents
Oil suction port bubble filtering structure of wind power gear box Download PDFInfo
- Publication number
- CN110725936A CN110725936A CN201911061977.3A CN201911061977A CN110725936A CN 110725936 A CN110725936 A CN 110725936A CN 201911061977 A CN201911061977 A CN 201911061977A CN 110725936 A CN110725936 A CN 110725936A
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- Prior art keywords
- filter
- gear box
- oil
- foam
- oil suction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
- F16H57/0404—Lubricant filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/002—Arrangements for conditioning of lubricants in the lubricating system by deaeration
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The utility model provides an oil absorption mouth blister structure of wind-powered electricity generation gear box, including the gear box, the oil absorption pump, the filter, the respirator is installed to the gear box upper end, the respirator communicates with the inner chamber of gear box, the oil absorption pump, the filter is located outside the gear box, the entry end of oil absorption pump is connected with the oil absorption mouth of gear box through the oil absorption pipe, the exit end of oil absorption pump is connected with the filter, the filter export is connected with the fuel sprayer that sets up in the gear box through oil pipe, set up a foam filter mantle in the gear box and cover the oil absorption mouth of gear box, the sectional area of foam filter mantle inner chamber is greater than the drill way sectional area of oil absorption mouth, be equipped with a plurality of filter pores that run through the cover wall and. The aperture of the filter cell is 0.5-0.8 mm, and the filter cell is used for breaking foam and bubbles contained in the lubricating oil passing through the filter cell, so that the lubricating oil entering the oil suction port does not contain foam, and the quantity of the lubricating oil returning to the gear box is effectively ensured not to be reduced.
Description
Technical Field
The invention relates to the field of wind power gear boxes, in particular to an oil suction port bubble filtering structure of a wind power gear box.
Background
Lubricating oil with a certain volume is filled in the wind power gear box, so that a planet carrier, a gear and the like of the planet row in the box body are immersed in the lubricating oil. When the gear box is operated, the planet carrier and the gear stir lubricating oil in the continuous rotating process, and air is mixed into the lubricating oil, so that a large amount of foam is generated. Meanwhile, as the lubricating oil is sprayed out in a fan-shaped high-speed mode through the oil nozzle, the contact between the lubricating oil and air is greatly increased, a large amount of foam can be generated, and the foam content in the lubricating oil can exceed 10% in the running process of the gear box generally.
The oil suction pump used by the gear box is usually a volume pump, and the oil suction pump sucks out the lubricating oil in the gear box, and the lubricating oil is filtered and cooled outside the box body and then sprayed into the gear box to lubricate and cool moving parts such as gears, bearings and the like. However, when the lubricant containing the foam is sucked by the oil pump and then discharged to the filter, the lubricant containing the foam is pierced by the pores on the surface of the filter element when passing through the 10 μ/50 μ filter element, and is split into lubricant and air, the air is discharged through the air discharge pipe at the top end of the filter, and the remaining lubricant is returned to the gear box for lubrication and cooling. However, the lubricating oil sucked by the oil pump contains a large amount of foam, so that the oil amount of the lubricating oil returning to the gear box every time is reduced, the lubricating oil flow in the gear box is reduced for a long time, the lubricating and cooling effects of the gear and the bearing are finally greatly reduced, the abrasion of the gear and the bearing is accelerated, and the service life of the gear box is shortened.
Disclosure of Invention
The invention aims to provide an oil suction port bubble filtering structure of a wind power gear box aiming at the defects of the prior art, and the bubble filtering structure is characterized in that a foam filtering cover is arranged at an oil suction port in a cavity of the wind power gear box to cover the oil suction port, so that foam bubbles contained in lubricating oil can be punctured and eliminated when passing through a plurality of small holes in a filtering screen wall of the foam filtering cover, the lubricating oil entering the oil suction port does not contain foam, and the quantity of the lubricating oil returning to the gear box can be effectively ensured not to be reduced.
The purpose of the invention is realized as follows: an oil suction port bubble filtering structure of a wind power gear box comprises a gear box body, an oil suction pump and a filter, the upper end of the gear box body is provided with a breather which is communicated with the inner cavity of the gear box body, the oil suction pump and the filter are positioned outside the gear box body, the inlet end of the oil suction pump is connected with the oil suction port of the gear box body through an oil suction pipe, the outlet end of the oil suction pump is connected with the filter, the outlet of the filter is connected with an oil nozzle arranged in the gear box body through an oil pipe, a foam filter cover is arranged in the gear box body to cover the oil suction port of the gear box body, the sectional area of the inner cavity of the foam filter cover is larger than the sectional area of the orifice of the oil suction port, the cover wall of the foam filter cover is provided with a plurality of filter bubble holes which penetrate through the cover wall and are used for lubricating oil to pass through to form a filter screen wall, the aperture of the filter cell is 0.5-0.8 mm, and the filter cell is used for breaking foam bubbles contained in the lubricating oil passing through the filter cell.
The filter screen wall of the foam filter cover is formed by welding metal strips distributed in a warp-weft manner, gaps among the metal strips distributed in the warp-weft manner are filter holes, or are formed by welding metal plates densely distributed with a plurality of through holes, and the through holes are filter holes.
The inner cavity of the foam filter cover is in a cubic shape, and the side length of each side of the cavity opening of the inner cavity is larger than the diameter of the oil suction opening.
The inner cavity of the foam filter cover is cylindrical, and the diameter of the cavity opening of the inner cavity is larger than that of the oil suction opening.
The wall thickness of the foam filter cover is 1-2 mm.
And fixing supports are arranged on two sides of the cavity opening of the foam filter cover, the foam filter cover covers the oil suction opening, and screws penetrate through the fixing supports to fixedly connect the foam filter cover with the gearbox body.
The oil suction port of the gearbox body is connected with an oil suction pipe through a ball valve.
Adopt above-mentioned technical scheme: the gear box is characterized in that a foam filter cover is arranged in the gear box body to cover an oil suction port of the gear box body, the sectional area of a cavity opening of the foam filter cover is larger than the sectional area of an orifice of the oil suction port, a plurality of filter bubble holes penetrating through the cover wall for lubricating oil to pass through are formed in the cover wall of the foam filter cover to form a filter screen wall, and the pore diameter of each filter bubble hole is 0.5-0.8 mm and is used for breaking foam bubbles contained in the lubricating oil passing through the filter bubble holes. The foam filter cover is provided with a plurality of filter bubble holes which penetrate through the cover wall and are used for lubricating oil to pass through to form a filter screen wall, the foam filter cover covers an oil suction port of the gear box body, the aperture of the filter bubble holes is set between 0.5 mm and 0.8mm, because the aperture of the filter bubble holes is small, the lubricating oil in the gear box can not pass through the filter bubble holes during mechanical motion stirring and the foam bubbles generated by oil nozzle injection, and can only be punctured by the filter bubble holes, the gas generated by foam bubble breakage is discharged from a breather at the upper end of the gear box, the lubricating oil enters a foam filter cover cavity and is sucked into a filter and an oil suction pump from the oil suction port, so that the lubricating oil sucked by the oil suction pump does not contain foam any more, the sucked and returned lubricating oil is sufficient, and therefore, the problems that the flow of the lubricating oil in the existing gear box is less and less, the lubricating and, leading to the problem of shortening the service life of the gearbox.
The sectional area of the inner cavity of the foam filter cover is larger than the sectional area of the orifice of the oil suction port, the inner cavity of the foam filter cover is in a cubic shape, and the side length of each side of the cavity opening of the inner cavity is larger than the diameter of the oil suction port; or the inner cavity of the foam filter cover is in a cylindrical shape, and the diameter of the cavity opening of the inner cavity is larger than that of the oil suction opening. Therefore, the inner cavity of the foam filter cover has sufficient space for lubricating oil with broken foam bubbles to pass through, and the lubricating oil entering the oil suction port cannot be reduced.
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Drawings
FIG. 1 is a schematic cross-sectional view of a gearbox of the present invention;
FIG. 2 is a schematic view of FIG. 1 taken along line A;
FIG. 3 is a schematic view of a portion of FIG. 1 taken along line B-B;
fig. 4 is a perspective view of the foam filter sock of the present invention.
Detailed Description
Referring to fig. 1 to 4, the oil suction port bubble filtering structure of the wind power gear box comprises a gear box body 4, an oil suction pump 5 and a filter 6, wherein a breather 7 is mounted at the upper end of the gear box body 4, the breather 7 is communicated with an inner cavity of the gear box body 4, the oil suction pump 5 and the filter 6 are located outside the gear box body 4 and are mounted at the side part of the gear box body 4, the inlet end of the oil suction pump 5 is connected with an oil suction port of the gear box body 4 through an oil suction pipe 3, and the outlet end of the oil suction pump 5 is connected with the filter 6. In order to facilitate the maintenance and replacement of the oil suction pump 5 and the filter 6, the oil suction port of the gear box body 4 is connected with the oil suction pipe 3 through a ball valve 2, and the ball valve 2 can be closed during maintenance to prevent lubricating oil from flowing out of the gear box body 4. The outlet end of the filter 6 is connected with an oil nozzle arranged in the gearbox housing 4 through an oil pipe. A foam filter cover 1 is arranged in the gear box body 4 to cover an oil suction port of the gear box body 4, and the wall thickness of the foam filter cover is 1-2 mm. The sectional area of the inner cavity of the foam filter cover 1 is larger than the sectional area of the orifice of the oil suction port, and a plurality of filter bubble holes which penetrate through the cover wall and are used for lubricating oil to pass through are arranged on the cover wall of the foam filter cover 1 to form a filter screen wall. The filter screen wall of the foam filter cover 1 is formed by welding metal strips distributed longitudinally and longitudinally, gaps between the metal strips distributed longitudinally and longitudinally are filter holes, or are formed by welding metal plates densely distributed with a plurality of through holes, and the through holes are filter holes. The filter screen wall of the embodiment is formed by welding metal strips distributed in a warp and weft mode. The aperture of the filter cell is 0.5-0.8 mm, and the filter cell is used for breaking foam bubbles contained in the lubricating oil passing through the filter cell. If the flow of the lubricating oil in the gear box is small, a filter screen wall with a thin cover wall and small pore diameter of a filter bubble hole can be adopted; if the flow rate of the lubricating oil in the gear box is larger, a filter screen wall with thicker cover wall and larger pore diameter of the filter pore can be adopted, so that the foam filter cover 1 can bear the pressure generated by the flowing of the lubricating oil when the oil suction pump 5 sucks the lubricating oil. The shape of the inner cavity of the foam filter cover 1 is cubic, the side length of each side of the cavity opening of the inner cavity is larger than the diameter of the oil suction opening, or the inner cavity of the foam filter cover 1 is cylindrical, and the diameter of the cavity opening of the inner cavity is larger than the diameter of the oil suction opening. The foam filter cover 1 of the embodiment adopts the foam filter cover 1 with the cubic inner cavity, the side length of each side of the cavity opening of the inner cavity is 175-176 mm, and the axial length of the foam filter cover 1 is 175-176 mm, so that the inner cavity of the foam filter cover 1 can contain sufficient lubricating oil, the lubricating oil without foam bubbles can be buffered to a certain extent in the foam filter cover 1, and the lubricating oil entering the oil suction opening is ensured to have no foam. The foam filter cover 1 is characterized in that fixing supports 8 are arranged on two sides of a cavity opening of the foam filter cover 1, the foam filter cover covers an oil suction opening, and screws penetrate through the fixing supports 8 to fixedly connect the foam filter cover 1 with the gear box body 4.
When the foam filter cover 1 is arranged, the cavity opening of the foam filter cover 1 is required to cover the oil suction opening completely, and the whole foam filter cover 1 is immersed in the lubricating oil in the gear box completely.
When the wind power gearbox works, the planet carrier and the gear in the gearbox stir lubricating oil in the gearbox body in the continuous rotating process, so that a large amount of foam is generated; at the same time, the oil suction pump 5 ejects the lubricating oil from the oil nozzle at a high speed, and a large amount of foam is generated. In the process that the oil suction pump 5 sucks the lubricating oil from the gear box, when foam contained in the lubricating oil contacts the filter cell holes of the foam filter cover 1, the foam can not pass through the filter cell holes, but the foam bubbles are punctured by the filter cell holes, so that the foam bubbles are broken. The gas that the foam breaks the back release floats lubricating oil liquid level, the breather 7 that sets up via gearbox housing 4 upper end discharges out the gear box, the lubricating oil that does not contain the foam is inhaled filter 6, in 5 return gearbox housing 4 of oil absorption pump again, from the fuel sprayer injection to lubricated gear in the gear box, the moving part of bearing, so circulation, make the foam can not take up the volume space in getting into the filter along with lubricating oil, let and get into the filter in lubricated oil mass can not reduce, thereby guarantee to return the oil mass reduction of the lubricating oil of gear box at every turn, make the lubrication and the cooling effect of moving parts such as gear, bearing can not reduce, wind-powered electricity generation gear box life shortens the phenomenon and takes place effectively.
Claims (7)
1. The utility model provides an oil absorption mouth filtration bubble structure of wind-powered electricity generation gear box, includes gear box, oil absorption pump, filter, the respirator is installed to gear box upper end, the inner chamber intercommunication of respirator and gear box, oil absorption pump, filter are located outside the gear box, and the entry end of oil absorption pump is connected with the oil absorption mouth of gear box through the oil absorption pipe, and the filter is connected to the exit end of oil absorption pump, and the filter export is connected its characterized in that through the fuel sprayer that oil pipe and gear box set up: the gear box is characterized in that a foam filter cover is arranged in the gear box body to cover an oil suction port of the gear box body, the sectional area of an inner cavity of the foam filter cover is larger than the sectional area of an orifice of the oil suction port, a plurality of filter bubble holes penetrating through the cover wall for lubricating oil to pass through are formed in the cover wall of the foam filter cover to form filter screen walls, and the pore diameter of each filter bubble hole is 0.5-0.8 mm and is used for breaking foam bubbles contained in the lubricating oil passing through the filter bubble holes.
2. The oil suction port filter bubble structure of the wind power gearbox as set forth in claim 1, wherein: the filter screen wall of the foam filter cover is formed by welding metal strips distributed in a warp-weft manner, gaps among the metal strips distributed in the warp-weft manner are filter holes, or are formed by welding metal plates densely distributed with a plurality of through holes, and the through holes are filter holes.
3. The oil suction port filter bubble structure of the wind power gearbox as set forth in claim 1, wherein: the shape of the inner cavity of the foam filter cover is cubic, and the side length of each side of the cavity opening of the inner cavity is larger than the diameter of the oil suction opening.
4. The oil suction port filter bubble structure of the wind power gearbox as set forth in claim 1, wherein: the inner cavity of the foam filter cover is cylindrical, and the diameter of the cavity opening of the inner cavity is larger than that of the oil suction opening.
5. The oil suction port filter bubble structure of the wind power gearbox as set forth in claim 1, wherein: the wall thickness of the foam filter cover is 1-2 mm.
6. The oil suction port filter bubble structure of the wind power gearbox as set forth in claim 1, wherein: and fixing supports are arranged on two sides of the cavity opening of the foam filter cover, the foam filter cover covers the oil suction opening, and screws penetrate through the fixing supports to fixedly connect the foam filter cover with the gearbox body.
7. The oil suction port filter bubble structure of the wind power gearbox as set forth in claim 1, wherein: the oil suction port of the gearbox body is connected with an oil suction pipe through a ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061977.3A CN110725936A (en) | 2019-11-01 | 2019-11-01 | Oil suction port bubble filtering structure of wind power gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061977.3A CN110725936A (en) | 2019-11-01 | 2019-11-01 | Oil suction port bubble filtering structure of wind power gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110725936A true CN110725936A (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911061977.3A Pending CN110725936A (en) | 2019-11-01 | 2019-11-01 | Oil suction port bubble filtering structure of wind power gear box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738862A (en) * | 2021-10-08 | 2021-12-03 | 德力佳传动科技(江苏)有限公司 | Cooling device and method for high-speed shaft bearing of wind power gearbox |
-
2019
- 2019-11-01 CN CN201911061977.3A patent/CN110725936A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738862A (en) * | 2021-10-08 | 2021-12-03 | 德力佳传动科技(江苏)有限公司 | Cooling device and method for high-speed shaft bearing of wind power gearbox |
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