CN211820420U - Negative pressure grease discharging system of direct-drive wind power main shaft bearing - Google Patents
Negative pressure grease discharging system of direct-drive wind power main shaft bearing Download PDFInfo
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- CN211820420U CN211820420U CN202020414934.0U CN202020414934U CN211820420U CN 211820420 U CN211820420 U CN 211820420U CN 202020414934 U CN202020414934 U CN 202020414934U CN 211820420 U CN211820420 U CN 211820420U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The utility model discloses a negative pressure grease discharging system of direct drive formula wind-powered electricity generation main shaft bearing, including oiling pump, negative pressure oil-well pump and waste oil collector, set up the oil filler point that is linked together with the lubricated clearance that the bearing inner and outer lane formed on the stationary ring of wind-powered electricity generation main shaft bearing, the oil filler point is connected on oiling pump through oil pipe, set up the oil outlet that is linked together with the lubricated clearance that the bearing inner and outer lane formed on the stationary ring of wind-powered electricity generation main shaft bearing, the oil outlet passes through oil pipe and connects on the negative pressure oil-well pump, the utility model has the advantages of scientific and reasonable; can utilize oiling pump and oil-well pump to realize the circulation of the inside lubricating oil of bearing, can enough guarantee that the inside lubricating oil volume of bearing is less than 40% requirement, also can avoid the oil temperature to rise when high-speed operation, the too big oil leak problem that leads to of pressure to and avoided the grease dry and hard problem that appears after the bearing operation, prolonged the life of bearing, reduce the pollution that causes the environment, and reduced the number of times and the cost that the bearing was maintained.
Description
Technical Field
The utility model belongs to the technical field of wind-powered electricity generation main shaft bearing, concretely relates to direct-drive wind-powered electricity generation main shaft bearing's negative pressure grease discharging system.
Background
The wind power generator is an electric power device which converts wind energy into mechanical work, the mechanical work drives a rotor to rotate, and finally outputs alternating current. At present, three rows of cylindrical roller combined bearings are adopted on a main shaft of a direct-drive wind driven generator. The bearing with the structure can bear larger radial and axial loads and overturning moment at the same time. Due to the special characteristics of the installation and use environment of the wind power generation equipment, the bearing is required to have high reliability, good sealing performance, flexible operation, and a service life of more than 20 years.
However, in the use process of the existing direct-drive wind power main shaft bearing, because the bearing is in a high-speed operation state (the linear speed is 100-150 m/min), the requirement on the lubricating performance inside the bearing is high, and the grease amount inside the bearing generally does not exceed 40%.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a negative pressure grease discharging system of a direct-drive wind power main shaft bearing, which has scientific and reasonable design and convenient operation; can utilize oiling pump and oil-well pump to realize the circulation of the inside lubricating oil of bearing, can enough guarantee that the inside lubricating oil volume of bearing is less than 40% requirement, also can avoid the oil temperature to rise when high-speed operation, the too big oil leak problem that leads to of pressure to and avoided the grease dry and hard problem that appears after the bearing operation, prolonged the life of bearing, reduce the pollution that causes the environment, and reduced the number of times and the cost that the bearing was maintained.
The utility model adopts the technical proposal that: the utility model provides a direct-drive wind-powered electricity generation main shaft bearing's negative pressure grease discharging system, includes the oiling pump, negative pressure oil-well pump and waste oil collector, sets up the oil filler point that is linked together with the lubricated clearance that the interior lane of bearing formed on the quiet ring of wind-powered electricity generation main shaft bearing, and the oil filler point passes through oil pipe and connects on the oiling pump, sets up the oil outlet that is linked together with the lubricated clearance that the interior lane of bearing formed on the quiet ring of wind-powered electricity generation main shaft bearing, and the oil outlet passes through oil pipe and connects.
And the waste oil collector is connected with the negative pressure oil well pump through an oil pipe.
The oil filler point includes first oil filler point and second oil filler point, and first oil filler point intercommunication is in the lubricated clearance department of roller that parallels with the bearing central line, and first oil filler point evenly distributed around the bearing central line.
The second oil filling holes are communicated with two roller lubrication gaps which are vertical to the central line of the bearing, and the second oil filling holes are uniformly distributed around the central line of the bearing.
The oil outlet is equipped with a plurality ofly, and evenly distributed around the bearing central line.
When the negative pressure grease discharging system for the direct-drive wind power main shaft bearing is used, when the bearing runs at a high speed, lubricating grease can be guided into the grease holes through the oil pipes by using the grease pump, the grease is guided into the lubricating gap between the inner ring and the outer ring of the bearing through the first grease hole and the second grease hole, so that the rollers in the bearing can be fully contacted with the grease during running, the lubricating and cooling effects are achieved, meanwhile, the grease is pumped out of the bearing by the negative pressure oil pump, the phenomenon that the grease is dried and solidified in the bearing is avoided, the problem that the grease is too large in the bearing due to too high temperature and leakage is caused is solved, the grease can be reused, the grease input cost is reduced, the environmental pollution can be avoided, and the service life of the bearing is prolonged.
An oil injection hole communicated with a lubricating gap formed by the inner ring and the outer ring of the bearing is formed in the static ring of the wind power main shaft bearing and is connected to an oil injection pump through an oil pipe; the purpose of this is: inside being used for through the leading-in bearing of oiling pump with grease through oil pipe, utilize the negative pressure oil-well pump to discharge grease, when the speed of oil feed is equal with the speed of oil extraction, can make the inside oil mass of bearing invariable all the time, be less than 40% with the oil mass control, can fully lubricate inside the bearing, reach the lubricated effect of ideal, when guaranteeing that lubricated effect is stable, the grease can realize the circulation under oiling pump and negative pressure oil-well pump effect, can avoid the grease to be big at the inside high interior pressure that leads to the fact of temperature rise of bearing, cause the grease leakage problem, also avoided after the bearing operation is accomplished, the grease takes place to do the knot, the bearing life who leads to reduces, the problem of polluted environment, very big improvement bearing life and cost are reduced.
The utility model has the advantages that: the utility model has scientific and reasonable design and convenient operation; can utilize oiling pump and oil-well pump to realize the circulation of the inside lubricating oil of bearing, can enough guarantee that the inside lubricating oil volume of bearing is less than 40% requirement, also can avoid the oil temperature to rise when high-speed operation, the too big oil leak problem that leads to of pressure to and avoided the grease dry and hard problem that appears after the bearing operation, prolonged the life of bearing, reduce the pollution that causes the environment, and reduced the number of times and the cost that the bearing was maintained.
Drawings
FIG. 1 is an overall structure diagram of the present invention;
FIG. 2 is a structural diagram of a first oil hole of the present invention;
FIG. 3 is a schematic cross-sectional view of a first oil hole of the present invention;
FIG. 4 is a structural view of a second oil hole of the present invention;
FIG. 5 is a schematic cross-sectional view of a second oil hole of the present invention;
FIG. 6 is a structural diagram of the oil outlet of the present invention;
fig. 7 is a schematic cross-sectional view of the oil outlet of the present invention.
The labels in the figure are:
1. an oil injection pump; 2. a negative pressure oil well pump; 3. a waste oil collector; 4. a first oil filler hole; 5. a second oil filler hole; 6. an oil outlet.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, a negative pressure grease discharging system of direct drive type wind power main shaft bearing, including oiling pump 1, negative pressure oil-well pump 2 and waste oil collector 3, offer the oil filler point that is linked together with the lubricated clearance that the inner and outer lane formed in the bearing on wind power main shaft bearing's the quiet circle (quiet circle means the bearing does not carry out pivoted lasso at the during operation, can be the inner circle, also can be the outer lane, this embodiment adopts the inner circle), the oil filler point that is linked together passes through oil pipe connection on oiling pump 1, offer the oil outlet 6 that is linked together with the lubricated clearance that the inner and outer lane formed in the bearing on wind power main shaft bearing's the quiet circle, oil outlet 6 passes through oil pipe connection.
The oil filler holes comprise a first oil filler hole 4 and a second oil filler hole 5, the first oil filler hole 4 is communicated with a roller lubrication gap parallel to the central line of the bearing, the first oil filler holes 4 are uniformly distributed around the central line of the bearing, and as shown in figures 2-3, an upper first oil filler hole and a lower first oil filler hole 4 are arranged on the cross section and are respectively communicated with the gaps at the upper end and the lower end of the vertical roller so as to lubricate the gap of the roller group.
The second oil filling holes 5 are communicated with two roller lubrication gaps which are perpendicular to the central line of the bearing, the second oil filling holes 5 are uniformly distributed around the central line of the bearing, as shown in fig. 4-5, the cross section is provided with an upper second oil filling hole 5 and a lower second oil filling hole 5, the second oil filling hole 5 positioned at the upper part is communicated with the roller group gap at the upper part, and the second oil filling hole 5 positioned at the lower part is communicated with the roller group gap at the lower part for lubricating the upper and lower roller group gaps.
The oil outlet holes 6 are arranged in a plurality and are uniformly distributed around the central line of the bearing, as shown in fig. 6-7, the oil outlet holes 6 are communicated with a lubricating gap between the inner ring and the outer ring, so that lubricating grease is guided into the oil outlet holes 6 under the action of the negative pressure oil well pump 2, and the purpose of oil discharge is achieved.
When the negative pressure grease discharging system for the direct-drive wind power main shaft bearing is used, when the bearing runs at a high speed, lubricating grease can be guided into a grease hole through an oil pipe by using the grease pump 1, the grease is guided into a lubricating gap of an inner ring and an outer ring of the bearing through the first grease hole 4 and the second grease hole 5, so that a roller in the bearing can be fully contacted with the grease when running, the lubricating and cooling effects are achieved, meanwhile, the grease is pumped out of the interior of the bearing by the negative pressure oil pump 2, the phenomenon that the grease is dried inside the bearing is avoided, the problem that the grease is too high in temperature and causes overlarge pressure in the bearing and leakage is avoided, the grease can be recycled, the grease input cost is reduced, the environmental pollution can be avoided, and the service life of the bearing is prolonged.
Claims (5)
1. The utility model provides a direct drive formula wind-powered electricity generation main shaft bearing's negative pressure grease discharging system which characterized in that: including oiling pump, negative pressure oil-well pump and waste oil collector, set up the oil filler point that is linked together with the lubricated clearance that the bearing inner and outer lane formed on wind-powered electricity generation main shaft bearing's stationary ring, the oil filler point passes through oil pipe and connects on the oiling pump, sets up the oil outlet that is linked together with the lubricated clearance that the bearing inner and outer lane formed on wind-powered electricity generation main shaft bearing's stationary ring, and the oil outlet passes through oil pipe and connects on the negative pressure oil-well pump.
2. The negative pressure grease discharging system of the direct-drive wind power main shaft bearing according to claim 1, characterized in that: the waste oil collector is connected with the negative pressure oil well pump through an oil pipe.
3. The negative pressure grease discharging system of the direct-drive wind power main shaft bearing according to claim 1, characterized in that: the oil filler point includes first oil filler point and second oil filler point, and first oil filler point intercommunication is in the lubricated clearance department of roller that parallels with the bearing central line, and first oil filler point evenly distributed around the bearing central line.
4. The negative pressure grease discharging system of the direct-drive wind power main shaft bearing according to claim 3, characterized in that: the second oil filling holes are communicated with two roller lubrication gaps which are vertical to the central line of the bearing, and the second oil filling holes are uniformly distributed around the central line of the bearing.
5. The negative pressure grease discharging system of the direct-drive wind power main shaft bearing according to claim 1, characterized in that: the oil outlet is equipped with a plurality ofly, and evenly distributed around the bearing central line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020414934.0U CN211820420U (en) | 2020-03-27 | 2020-03-27 | Negative pressure grease discharging system of direct-drive wind power main shaft bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020414934.0U CN211820420U (en) | 2020-03-27 | 2020-03-27 | Negative pressure grease discharging system of direct-drive wind power main shaft bearing |
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| Publication Number | Publication Date |
|---|---|
| CN211820420U true CN211820420U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020414934.0U Active CN211820420U (en) | 2020-03-27 | 2020-03-27 | Negative pressure grease discharging system of direct-drive wind power main shaft bearing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664566A (en) * | 2020-12-04 | 2021-04-16 | 国家电投集团广西兴安风电有限公司 | Bearing grease lubrication monitoring and determining method and system |
| CN112664567A (en) * | 2020-12-04 | 2021-04-16 | 国家电投集团广西兴安风电有限公司 | Automatic bearing lubrication control method and device |
-
2020
- 2020-03-27 CN CN202020414934.0U patent/CN211820420U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664566A (en) * | 2020-12-04 | 2021-04-16 | 国家电投集团广西兴安风电有限公司 | Bearing grease lubrication monitoring and determining method and system |
| CN112664567A (en) * | 2020-12-04 | 2021-04-16 | 国家电投集团广西兴安风电有限公司 | Automatic bearing lubrication control method and device |
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