CN207246253U - A kind of device for increasing wind generating set pitch control system joint stiffness - Google Patents
A kind of device for increasing wind generating set pitch control system joint stiffness Download PDFInfo
- Publication number
- CN207246253U CN207246253U CN201721091106.2U CN201721091106U CN207246253U CN 207246253 U CN207246253 U CN 207246253U CN 201721091106 U CN201721091106 U CN 201721091106U CN 207246253 U CN207246253 U CN 207246253U
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- flange
- pitch
- blade
- studs
- generating set
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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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Abstract
A kind of device for increasing wind generating set pitch control system joint stiffness, including blade, studs, thread bush, paddle flange, pitch variable bearings Internal and external cycle, wheel hub, attachment bolt and Gaskets, the thread bush is embedded in blade matrix in advance, the paddle flange passes through standard bolt, Gaskets are fixed on blade, the wheel hub, pitch variable bearings outer ring is connected with Gaskets by standard bolt, described device further includes coupling nut, upper flange and lower flange, blade and the pitch variable bearings inner ring, lower flange, upper flange is coupled by studs with coupling nut, the upper lower flange, coupling nut, pitch variable bearings inner ring and studs are coupled by screw thread pair.The utility model provides a kind of device of the low increase wind generating set pitch control system joint stiffness of operable, good economy performance, cost.
Description
Technical field
Wind power generation field is the utility model is related to, more particularly to a kind of increase wind generating set pitch control system connection is just
The device of degree.
Background technology
The wind power generating set of wind power plant operation has been put at present, there is blade fracture in pitch-controlled system, and studs is broken,
The problems such as pitch variable bearings Internal and external cycle is broken, the inordinate wear of pitch variable bearings retainer or fracture.With to wind power generating set technology
Continuous research and progressive, research shows to increase the rigidity of wind generating set pitch control system, can improve pitch-controlled system operating
Reliability, reduces the failure rate of pitch-controlled system, ensures the security of wind power generating set operation.Wind generating set pitch control system
Connection parts include：Blade, thread bush, studs, paddle flange, pitch variable bearings, wheel hub, standard nut, standard bolt,
Gaskets, pitch variable bearings outer ring are coupled with wheel hub by standard bolt, and pitch variable bearings inner ring is joined with blade by studs
Connect.
The content of the invention
In order to overcome the shortcomings of that the existing operation wind generating set pitch control system rigidity of increase is poor, the utility model provides
A kind of device of the low increase wind generating set pitch control system joint stiffness of operable, good economy performance, cost.
The technical scheme in the invention for solving the above technical problem is：
A kind of device for increasing wind generating set pitch control system joint stiffness, including blade, studs, thread bush,
Paddle flange, pitch variable bearings Internal and external cycle, wheel hub, attachment bolt and Gaskets, the thread bush are embedded in blade matrix in advance, institute
State paddle flange to be fixed on blade by standard bolt, Gaskets, the wheel hub, pitch variable bearings outer ring and Gaskets lead to
Standard bolt connection is crossed, described device further includes coupling nut, upper flange and lower flange, blade and the pitch variable bearings inner ring,
Lower flange, upper flange are coupled by studs with coupling nut, the upper lower flange, coupling nut, pitch variable bearings inner ring and
Studs is coupled by screw thread pair.
Further, two upper flanges and two prime number lower flanges are spliced into a full circle；The upper flange and laxative remedy
Faying surface between orchid uses make-up overlapping mode.
The security risk that the utility model is brought for the deficiency of wind generating set pitch control system rigidity, newly-designed wind
Power generator group pitch-controlled system can be solved effectively because of pitch-controlled system insufficient rigidity band by increasing the rich degree of pitch-controlled system rigidity
The security risk come；But increase the wind generating set pitch control system rigidity that put into operation, face wind generating set pitch control system
Aerial renovation technique difficulty of uniting is big, and it is limited that wind generating set pitch control system transforms space in the air, wind generating set pitch control system
A series of problems, such as lower tower hoisting cost of system is huge.
The main beneficial effect of the utility model is shown：Can be with minimum cost, effect solves to have run wind power generating set
The problem of pitch-controlled system joint stiffness can not be increased in the air, provide newly to have run wind generating set pitch control system transformation
Thinking.
Brief description of the drawings
Fig. 1 is former pitch-controlled system connection schematic diagram.
Fig. 2 is the pitch-controlled system connection schematic diagram of the utility model.
Fig. 3 is upper and lower flanged lap joint face and coupling nut scheme of installation.
Fig. 4 is coupling nut schematic diagram, wherein, (a) is sectional view, and (b) is top view.
Fig. 5 is upper flange connection schematic diagram, wherein, (a) is structure chart, and (b) is side view.
Fig. 6 is lower flange connection schematic diagram, wherein, (a) is structure chart, and (b) is side view.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings
With reference to Fig. 2~Fig. 6, a kind of device for increasing wind generating set pitch control system joint stiffness, including blade 1, spiral shell
Line set 2, studs 3, paddle flange 4, standard bolt 5, Gaskets 6, pitch variable bearings outer ring 7, wheel hub 8, standard nut 9,
Gaskets 10, pitch variable bearings inner ring 11, lower flange 12, upper flange 13, special coupling nut 14.Thread bush 2 is pre-buried with blade 1
In matrix, blade 1 and pitch variable bearings inner ring 11, lower flange 12, upper flange 13 pass through studs 3 and special coupling nut 14
Connection is completed, pitch variable bearings outer ring, wheel hub are completed to couple by standard bolt with gasket.
The paddle flange is fixed on blade by standard bolt, Gaskets, the pitch axis inner ring, blade, paddle
Leaf flange, thread bush, upper lower flange by studs with it is special couple apply pretightning force between mother and clamped, the wheel
Hub, pitch variable bearings, Gaskets are clamped by applying pretightning force on standard bolt, the upper lower flange, special connection
Nut, pitch variable bearings inner ring, studs are coupled by screw thread pair.
The coupling nut design, its key property include following characteristics：The connection female portion s, e sizes use standard
Nut size, is easily installed use；The connection mother shoulder thickness b and outer diameter D, and chamfering R sizes, need to meet operating loading intensity
Design requirement；The coupling nut minimum outer diameter dw sizes, need to meet operating loading requirement of strength design, not less than nut pair
Hem width degree；The coupling nut internal thread Md sizes, need to confirm according to studs size；The coupling nut depth of internal thread
B, need to meet screw thread pair design standard；The coupling nut overall length L, gives definite according to specific actual use space.
Described flange design, its key property up and down include following characteristics：The upper lower flange, two upper flanges and two
Sliceable lower flange is a full circle；The faying surface of the upper lower flange, using make-up overlapping mode.
The increase wind generating set pitch control system joint stiffness device of the present embodiment implements brief step including following：
A) according to the specification of the bulk between pitch variable bearings inner ring 11 and wheel hub 8, and studs, it is special to complete
The design of connected nut 14, makes it meet requirement；
B) according to 11 bolt hole count of pitch variable bearings inner ring, the distance of pitch variable bearings inner ring 11 to pitch variable bearings outer ring 7 and
To the size of wheel hub 8, lower flange 12 is completed, the design of upper flange 13, makes it meet requirement
C) first lower flange 12 is installed：Hole number on flange is pressed, removes standard nut 9 on studs 3, standard pad
Piece 10, lower flange 12 is installed on pitch variable bearings inner ring 11, is screwed into special coupling nut 14, and by screw thread pair pretension；
D) second lower flange 12 is installed：Second lower flange is installed using axisymmetric method, is removed on studs 3
Standard nut 9, Gaskets 10, lower flange 12 is installed on pitch variable bearings inner ring 11, is screwed into special coupling nut 14, and will
Screw thread pair pretension；
E) first upper flange 13 is installed：Remove standard nut 9 on the studs 3 between two panels lower flange 12, standard
Gasket 10, upper flange 13 is positioned on lower flange 12 and pitch variable bearings inner ring, is screwed into special coupling nut 14, and by screw thread pair
Pretension；
F) second upper flange 13 is installed：Remove standard nut 9 on remaining studs 3, Gaskets 10, by upper flange
13 are positioned on lower flange 12 and pitch variable bearings inner ring, are screwed into special coupling nut 14, and by screw thread pair pretension.
Claims (2)
1. a kind of device for increasing wind generating set pitch control system joint stiffness, including blade, studs, thread bush, paddle
Leaf flange, pitch variable bearings Internal and external cycle, wheel hub, attachment bolt and Gaskets, the thread bush is embedded in blade matrix in advance, described
Paddle flange is fixed on blade by standard bolt, Gaskets, and the wheel hub, pitch variable bearings outer ring and Gaskets pass through
Standard bolt connects, it is characterised in that：Described device further includes coupling nut, upper flange and lower flange, the blade and variable pitch
Bearing inner race, lower flange, upper flange are coupled by studs with coupling nut, the upper lower flange, coupling nut, pitch axis
Hold inner ring and studs is coupled by screw thread pair.
2. a kind of device for increasing wind generating set pitch control system joint stiffness as claimed in claim 1, two it is described on
Flange and two lower flanges are spliced into a full circle；Faying surface between the upper flange and lower flange is overlapped using make-up
Mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091106.2U CN207246253U (en) | 2017-08-29 | 2017-08-29 | A kind of device for increasing wind generating set pitch control system joint stiffness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091106.2U CN207246253U (en) | 2017-08-29 | 2017-08-29 | A kind of device for increasing wind generating set pitch control system joint stiffness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207246253U true CN207246253U (en) | 2018-04-17 |
Family
ID=61884650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721091106.2U Active CN207246253U (en) | 2017-08-29 | 2017-08-29 | A kind of device for increasing wind generating set pitch control system joint stiffness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207246253U (en) |
-
2017
- 2017-08-29 CN CN201721091106.2U patent/CN207246253U/en active Active
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