CN112594146A - Axial rotation position adjusting method for variable-pitch bearing of wind generating set - Google Patents
Axial rotation position adjusting method for variable-pitch bearing of wind generating set Download PDFInfo
- Publication number
- CN112594146A CN112594146A CN202010885881.5A CN202010885881A CN112594146A CN 112594146 A CN112594146 A CN 112594146A CN 202010885881 A CN202010885881 A CN 202010885881A CN 112594146 A CN112594146 A CN 112594146A
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- Prior art keywords
- blade
- variable
- pitch bearing
- bolt
- bolts
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000007547 defect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/50—Maintenance or repair
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05B2260/79—Bearing, support or actuation arrangements therefor
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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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
A method for adjusting the axial rotation position of a variable-pitch bearing of a wind generating set comprises the following steps: controlling the position of the blade to be adjusted; loosening the blade bolts, and finally leaving 8 blade bolts to be connected with the variable-pitch bearing inner ring; replacing the remaining blade bolts one by one in sequence by using the blade lengthening bolts; separating the blade from the pitch bearing; connecting the blade bolt with the outer ring of the variable-pitch bearing through the connecting bracket; removing the lengthened bolts of the blades and driving the inner ring of the variable-pitch bearing to rotate; reconnecting the blade extension bolts; removing the connecting bracket; the blades are attached to the inner ring of the bearing in the axial direction through the lengthened bolts of the blades; connecting the blade bolt with the bearing inner ring again; and (4) removing the lengthened bolts of the blades. The invention overcomes the defects of the prior art, and the distance between the blade and the variable-pitch bearing inner ring is adjusted by the blade lengthening bolt, so that the blade and the variable-pitch bearing are separated in a short time, the variable-pitch bearing inner ring can be rotated by 180 degrees, and the original working area of 0-90 degrees can be avoided.
Description
Technical Field
The invention relates to the technical field of axial rotation adjustment of blades and a variable pitch bearing, in particular to an axial rotation position adjustment method for a variable pitch bearing of a wind generating set.
Background
The fan pitch bearing is used for connecting the bearing parts of the hub and the blades, and the hub and the blades can rotate relatively through the pitch bearing, so that the function of adjusting the rotating speed of the fan is achieved.
The working area of the variable pitch bearing is generally 0-90 degrees, the blades are driven to axially rotate by the meshing of the inner gear rings, and the tooth surface of the variable pitch bearing is easily abraded due to long-time reciprocating motion in a fixed angle. The existing maintenance method for the tooth surface of the variable-pitch bearing usually directly replaces the whole variable-pitch bearing, and wastes time and labor; and also greatly increases the maintenance cost of the blower.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an axial rotation position adjusting method for a variable pitch bearing of a wind generating set, which overcomes the defects of the prior art, has reasonable design, adjusts the relative position between a blade and an inner ring of the variable pitch bearing through a blade lengthening bolt, enables the blade to be separated from the variable pitch bearing in a short time, and then connects and fixes the blade and an outer ring of the variable pitch bearing through a connecting bracket, thereby separating the inner ring of the variable pitch bearing from the blade and rotating 180 degrees under the condition of not needing a weight-level crane, and the adjusted variable pitch bearing can avoid the original working area of 0-90 degrees, so that the working area is changed into 180-270 degrees.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a method for adjusting the axial rotation position of a variable-pitch bearing of a wind generating set comprises the following steps:
step S1: rotating the wind wheel to enable the blade to be adjusted to be in a vertically downward position when the blade to be adjusted is in a blade retracting state;
step S2: sequentially loosening the bolt connection between the blade and the variable pitch bearing inner ring, reserving 1 blade bolt after continuously loosening 6 blade bolts, repeating the operation, and finally reserving 8 blade bolts to be connected with the variable pitch bearing inner ring;
step S3: sequentially replacing the 8 blade bolts left in the step S2 with the blade extension bolts;
step S4: adjusting the position of a nut corresponding to the blade lengthening bolt to separate the end face of the blade from the variable-pitch bearing;
step S5: a plurality of connecting supports are uniformly arranged between the upper end surface of the blade and the outer ring of the variable-pitch bearing, and the blade bolt at the root of the blade is connected with the outer ring bolt of the variable-pitch bearing through the connecting supports;
step S6: removing the lengthened bolts of the blades to separate the root parts of the blades from the bearing inner ring;
step S7: the variable-pitch bearing inner ring is driven to rotate for 180 degrees by the variable-pitch driving motor;
step S8: connecting the blade with the inner ring of the variable-pitch bearing again through the blade lengthening bolt;
step S9: removing the connecting bracket;
step S10: the nut of the lengthened bolt of the blade is rotated through the torque sleeve to lift the blade, so that the upper end surface of the blade is attached to the inner ring of the bearing;
step S11: connecting and fastening the blade bolt and the bearing inner ring again;
step S12: and (4) removing the lengthened blade bolts, and connecting and fastening the remaining 8 blade bolts and the bearing inner ring.
Preferably, in step S5, fixing screw holes are formed in both ends of the connecting bracket, a locking bolt is connected to the fixing screw holes in the upper end of the connecting bracket through internal threads, and in step S5, the upper end of the connecting bracket is fixedly mounted in a bolt hole of the outer ring of the pitch bearing through the locking bolt; the lower end of the connecting support is matched and fixed with the blade bolt at the end part of the blade through the fixing screw hole.
Preferably, the blade extension bolt includes an extension portion and a tightening portion, and when the blade extension bolt is attached in step S3, the tightening portion of the blade extension bolt may be fixedly attached to the blade bolt at the upper end of the blade.
Preferably, the short-distance lifting of the blade is performed only by the torque sleeve in said step S10.
The invention provides an axial rotation position adjusting method for a variable pitch bearing of a wind generating set. The method has the following beneficial effects: the distance between the blade and the variable-pitch bearing inner ring is adjusted through the blade lengthening bolt, so that the blade and the variable-pitch bearing are separated in a short time, and then the blade and the variable-pitch bearing outer ring are connected and fixed through the connecting support, so that the variable-pitch bearing inner ring can be rotated by 180 degrees, the adjusted variable-pitch bearing can avoid the original working area of 0-90 degrees, the working area is changed into 180-270 degrees, the whole process is convenient and rapid, time and labor are saved, and the service life of the variable-pitch bearing is greatly prolonged.
Drawings
In order to more clearly illustrate the present invention or the prior art solutions, the drawings that are needed in the description of the prior art will be briefly described below.
FIG. 1 is a schematic view of the present invention with the blades separated;
FIG. 2 is a schematic view of the structure of the invention when the blades are connected with the bearing outer ring through the connecting bracket.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings.
As shown in fig. 1-2, the invention discloses a method for adjusting the axial rotation position of a pitch bearing of a wind generating set, which comprises the following steps:
step S1: when the blade 1 to be adjusted is in a blade-retracting state, rotating a wind wheel to enable the blade 1 to be in a vertically downward position;
step S2: sequentially loosening the blade 1 to be connected with the blade bolt 2 of the variable-pitch bearing inner ring 3, reserving one blade bolt 2 after continuously loosening six blade bolts 2, repeating the operation, and finally reserving eight blade bolts 2 to be connected with the variable-pitch bearing inner ring 3;
step S3: sequentially replacing the eight blade bolts 2 left in step S2 with the blade extension bolts 4;
step S4: adjusting the position of a nut corresponding to the blade lengthening bolt 4 to separate the end surface of the blade 1 from the variable-pitch bearing;
step S5: a plurality of connecting supports 6 are uniformly arranged between the upper end surface of the blade 1 and the variable-pitch bearing outer ring 5, and a blade bolt 2 at the root of the blade is connected with the variable-pitch bearing outer ring 5 through the connecting supports 6;
step S6: removing the lengthened bolts 4 of the blades to separate the roots of the blades from the variable-pitch bearing inner rings 3;
step S7: the variable-pitch bearing inner ring 3 is driven to rotate 180 degrees (or other suitable angles) by the variable-pitch driving motor;
step S8: connecting the blade with the variable-pitch bearing inner ring 3 through the blade lengthening bolt 4 again;
step S9: the connecting bracket 6 is removed;
step S10: the nut of the blade lengthening bolt 4 is rotated through the torque sleeve to lift the blade 1, so that the upper end surface of the blade 1 is attached to the variable-pitch bearing inner ring 3;
step S11: connecting and fastening the blade bolt 2 and the variable-pitch bearing inner ring 3 again;
step S12: and (4) removing the blade lengthening bolts 4, and connecting and fastening the remaining eight blade bolts 2 and the variable pitch bearing inner ring 3.
The whole process does not need large-scale hoisting equipment, the distance between the blade and the variable-pitch bearing inner ring is adjusted through the blade lengthening bolt, the blade and the variable-pitch bearing are separated in a short time, the blade and the variable-pitch bearing outer ring are connected and fixed through the connecting support, and the blade and the variable-pitch bearing inner ring are separated in a short time, so that the variable-pitch bearing inner ring can be independently rotated by 180 degrees, the adjusted variable-pitch bearing can avoid the original working area of 0-90 degrees, the working area is changed into 180-270 degrees, the whole process is convenient and rapid, time and labor are saved, and the service life of the variable-pitch bearing is greatly prolonged.
In the embodiment of the present invention, in step S5, both ends of the connecting bracket are provided with fixing screw holes, the fixing screw holes located at the upper end of the connecting bracket 6 are connected with locking bolts through internal threads, and in step S5, the upper end of the connecting bracket 6 is fixedly installed in a bolt hole of the outer ring of the pitch bearing through the locking bolts; the lower end of the connecting bracket 6 is matched and fixed with the blade bolt at the end part of the blade through a fixing screw hole. In this embodiment, the connection bracket may be configured as an i-shaped bracket, so that the two ends of the connection bracket can be more stably connected with the outer ring of the pitch bearing and the end of the blade.
In the embodiment of the present invention, the blade extension bolt 4 includes the extension portion and the tightening portion, and when the blade extension bolt is attached in step S3, the tightening portion of the blade extension bolt may be fixedly attached to the blade bolt at the upper end of the blade.
In an embodiment of the invention, step S10 only lifts the blade a short distance through the torque sleeve (or hydraulically advanced) to bring the blade into engagement with the pitch bearing.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. The method for adjusting the axial rotation position of the variable-pitch bearing of the wind generating set is characterized by comprising the following steps of:
step S1: rotating the wind wheel to enable the blade to be adjusted to be in a vertically downward position when the blade to be adjusted is in a blade retracting state;
step S2: sequentially loosening the bolt connection between the blade and the variable pitch bearing inner ring, reserving 1 blade bolt after continuously loosening 6 blade bolts, repeating the operation, and finally reserving 8 blade bolts to be connected with the variable pitch bearing inner ring;
step S3: sequentially replacing the 8 blade bolts left in the step S2 with the blade extension bolts;
step S4: adjusting the position of a nut corresponding to the blade lengthening bolt to separate the end face of the blade from the variable-pitch bearing;
step S5: a plurality of connecting supports are uniformly arranged between the upper end surface of the blade and the outer ring of the variable-pitch bearing, and the blade bolt at the root of the blade is connected with the outer ring bolt of the variable-pitch bearing through the connecting supports;
step S6: removing the lengthened bolts of the blades to separate the root parts of the blades from the bearing inner ring;
step S7: the variable-pitch bearing inner ring is driven to rotate for 180 degrees by the variable-pitch driving motor;
step S8: connecting the blade with the inner ring of the variable-pitch bearing again through the blade lengthening bolt;
step S9: removing the connecting bracket;
step S10: the nut of the lengthened bolt of the blade is rotated through the torque sleeve to lift the blade, so that the upper end surface of the blade is attached to the inner ring of the bearing;
step S11: connecting and fastening the blade bolt and the bearing inner ring again;
step S12: and (4) removing the lengthened blade bolts, and connecting and fastening the remaining 8 blade bolts and the bearing inner ring.
2. The method for adjusting the axial rotation position of the pitch bearing of the wind generating set according to claim 1, wherein the method comprises the following steps: fixing screw holes are formed in the two ends of the connecting support in the step S5, locking bolts are connected to the fixing screw holes in the upper end of the connecting support in a threaded mode, and in the step S5, the upper end of the connecting support is fixedly installed in the bolt holes in the outer ring of the variable-pitch bearing through the locking bolts; the lower end of the connecting support is matched and fixed with the blade bolt at the end part of the blade through the fixing screw hole.
3. The method for adjusting the axial rotation position of the pitch bearing of the wind generating set according to claim 1, wherein the method comprises the following steps: the blade extension bolt includes an extension portion and a tightening portion, and when the blade extension bolt is mounted in step S3, the tightening portion of the blade extension bolt may be fixedly mounted on the blade bolt at the upper end of the blade.
4. The method for adjusting the axial rotation position of the pitch bearing of the wind generating set according to claim 1, wherein the method comprises the following steps: the short-distance lifting of the blade is performed only by the torque sleeve in said step S10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885881.5A CN112594146A (en) | 2020-08-28 | 2020-08-28 | Axial rotation position adjusting method for variable-pitch bearing of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885881.5A CN112594146A (en) | 2020-08-28 | 2020-08-28 | Axial rotation position adjusting method for variable-pitch bearing of wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112594146A true CN112594146A (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010885881.5A Pending CN112594146A (en) | 2020-08-28 | 2020-08-28 | Axial rotation position adjusting method for variable-pitch bearing of wind generating set |
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|---|---|
| CN (1) | CN112594146A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562454A (en) * | 2010-12-08 | 2012-07-11 | 维斯塔斯风力系统有限公司 | Pitch gear |
| CN204283729U (en) * | 2014-12-08 | 2015-04-22 | 北车风电有限公司 | A kind of wind generator set blade blade pitch device |
| CN104625562A (en) * | 2014-12-23 | 2015-05-20 | 新疆金风科技股份有限公司 | Method of correcting blade dislocation of wind generating set |
| CN111140432A (en) * | 2018-11-05 | 2020-05-12 | 中国船舶重工集团海装风电股份有限公司 | Wind turbine generator system variable pitch system and wind turbine generator system |
-
2020
- 2020-08-28 CN CN202010885881.5A patent/CN112594146A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562454A (en) * | 2010-12-08 | 2012-07-11 | 维斯塔斯风力系统有限公司 | Pitch gear |
| CN204283729U (en) * | 2014-12-08 | 2015-04-22 | 北车风电有限公司 | A kind of wind generator set blade blade pitch device |
| CN104625562A (en) * | 2014-12-23 | 2015-05-20 | 新疆金风科技股份有限公司 | Method of correcting blade dislocation of wind generating set |
| CN111140432A (en) * | 2018-11-05 | 2020-05-12 | 中国船舶重工集团海装风电股份有限公司 | Wind turbine generator system variable pitch system and wind turbine generator system |
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Application publication date: 20210402 |
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| RJ01 | Rejection of invention patent application after publication |