CN203925894U - A kind of flange or class flange reinforcing ring, linkage structure and wind power generating set - Google Patents
A kind of flange or class flange reinforcing ring, linkage structure and wind power generating set Download PDFInfo
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- CN203925894U CN203925894U CN201420348202.0U CN201420348202U CN203925894U CN 203925894 U CN203925894 U CN 203925894U CN 201420348202 U CN201420348202 U CN 201420348202U CN 203925894 U CN203925894 U CN 203925894U
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- flange
- class
- bolt
- flanged
- ring
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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
- Y02E10/728—Onshore wind turbines
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Abstract
The utility model discloses a kind of flange or class flange reinforcing ring and the flange that contains this stiffening ring or class flanged connecting structure, described flange for bolt two fixed fittings that are connected, described class flange be bearing structure and for bolt be fixedly connected part and rotating component, described flange, on class flange, be provided with the bolt hole coordinating with bolt, described stiffening ring is for coordinating with flanged surface or class flanged surface, for the along the circumferential direction combination ring structure of mix proportion successively of domain structure or multiple burst, and domain structure, combination is equipped with in ring structure and axially corresponding consistent through hole of bolt hole on flange or class flange.Above-mentioned stiffening ring can strengthen existing flange or class flanged connecting structure rigidity, intensity and reduce bolt load, and then improves the linkage structure life-span.The invention also discloses the wind power generating set that contains above-mentioned linkage structure, the accident that can avoid bolt fracture to cause, good operation stability.
Description
Technical field
The utility model relates to flange connection area, particularly, and the wind power generating set that relates to a kind of flange or class flange reinforcing ring, the flange that contains this stiffening ring or class flanged connecting structure and contain this linkage structure.
Background technique
At present, in wind power generating set, flange is to use important connected element widely.Between wind-driven generator tower section, tower cylinder and foundation ring, tower cylinder and cabin, wheel hub and fan blade, mostly use flange or class flange (bearing) to connect by the mode of high-strength bolt, particularly the Placement of wind generator set blade is all that the mode of wheel hub-pitch variable bearings-blade-high-strength bolt connects mostly, class flange (pitch variable bearings)-high-strength bolt for this position connects, the structural type of its design is adapted to bear thrust load and radial load, a little less than will wanting for the alternation of moment of flexure form and the relative first two load of its ability to bear of impulsive load.The high-strength bolt that has been found that at present a lot of vane propeller-changings position of bearings in the wind power generating set of the operation accident causing that rupture, if bolt fracture is found can to bring not in time and chain blower fan structure is damaged to larger accident.The reason that high-strength bolt lost efficacy and the structure stiffness of connection part have direct relation, in the time that structure stiffness is not enough, can in the time that load is larger, make to connect the load that high-strength bolt is subject to inhomogeneous, thereby make part bolt produce excessive deformation plastic deformation even occurs, structural rigidity deficiency thus, bolt load is inhomogeneous etc., and factor is the main cause of bolt failure.
For the problems referred to above, enhancement measures for flange or class flange (bearing)-high-strength bolt generally can adopt following several mode: first kind of way: the size that changes flange or class flange, select thickness larger, the flange that width is larger or class flange, improve the rigidity of flange or class flange and then the rigidity of raising total; The second way: select the high-strength bolt that diameter is larger, strengthen the integral rigidity of structure by increasing the rigidity of high-strength bolt.
Above first kind of way, strengthen structure stiffness by the method that increases flange or class flange (bearing) size, it need to redesign and produce corresponding flange or bearing, transformation for in-service wind power generating set needs very large workload, and whole reinforcement reforming cost is high, be difficult to extensive popularization, be more suitable for new-built unit and be not too applicable to the transformation of in-service unit.
The above second way, by select the method for large diameter high-strength bolt need to transform the through hole that high-strength bolt is corresponding and the tapped hole coordinating with bolt simultaneously.Operation easier is large, and is difficult to ensure precision.
In sum; relatively lack for measure and method that flange or the class flanged connecting structure part in use strengthens at present; usually by flange part is designed more and brought again, and often there will be the situation of intensity, life-span deficiency for ripe flange or class flange product.Therefore, be badly in need of the mode of a kind of new raising flange or class flanged connecting structure Rigidity and strength.
Model utility content
The purpose of this utility model is to provide a kind of flange or class flange reinforcing ring, to strengthen existing flange or class flanged connecting structure rigidity, intensity and to reduce bolt load, and then improves the linkage structure life-span.
Second object of the present utility model is to provide a kind of flange or class flanged connecting structure, has structural rigidity, intensity is strong and bolt load is little feature, and the life-span is longer.
The 3rd object of the present utility model is to provide a kind of wind power generating set, with the accident of avoiding bolt fracture to cause, good operation stability.
For achieving the above object, the utility model is by the following technical solutions:
A kind of flange or class flange reinforcing ring, described flange for bolt two fixed fittings that are connected, described class flange be bearing structure and for bolt be fixedly connected part and rotating component, on described flange, class flange, be provided with the bolt hole coordinating with bolt, described stiffening ring is for coordinating with flanged surface or class flanged surface, for the along the circumferential direction combination ring structure of mix proportion successively of domain structure or multiple burst, and in domain structure, combination ring structure, be equipped with and axially corresponding consistent through hole of bolt hole on flange or class flange.
Further, the bridging arrangement that the interface section of described adjacent burst is concavo-convex cooperation; Or the interface surface of adjacent burst is parallel to each other, and interface surface is all perpendicular to flanged surface or class flanged surface.
Further, described bridging arrangement is angle type bridging arrangement or rectangle bridging arrangement.
A kind of flange or class flanged connecting structure, comprise flange and bolt for connecting two fixed fittings, or for class flange and the bolt of connection fixture and rotating component, wherein class flange is bearing structure; On flanged surface or class flanged surface, also have additional above-mentioned stiffening ring; Accordingly, the value added of described bolt length is equal to or greater than the thickness of stiffening ring.
Further, the described class flange for connection fixture and rotating component is wind generator set blade pitch variable bearings, and wherein fixed block is wheel hub, and rotating component is blade, and described stiffening ring is arranged on the end face of the pitch variable bearings outer shroud coordinating with wheel hub.
Further, described bearing is wind generating set yaw bearing.
A kind of wind power generating set, contains above-mentioned flange or class flanged connecting structure.
By adopting technique scheme, the utlity model has following beneficial effect:
1, the utility model adopts the stiffening ring of the combination ring structure of a kind of domain or split blade type, can carry out later stage reinforcing to flange or the class flanged connecting structure in use, make up original design strength deficiency, be out of shape the problems such as excessive, and can avoid redesign and the too high problem of replacement cost.
2, by installing stiffening ring additional at flange or class flanged connecting structure, there is the effect that strengthens flange or class flange (bearing) linkage structure rigidity, intensity and reduce clamping bolt load, and then the life-span of having improved linkage structure.Strengthen structural rigidity and intensity by installing the mode of flange reinforcing ring additional, share bolt load equally, its installation difficulty is little, only needs the length of corresponding growth bolt, and overall cost, lower than two kinds of modes mentioning in background technique, has good popularization operability and Economy.
3, by installing the flange of existing wind power generating set or class flanged connecting structure additional stiffening ring, there is the installation of manufacture convenient, and can in the situation that not changing original design, effectively strengthen the Rigidity and strength of structure, finally reach the effect in the working life that extends flange and class flange (bearing), eliminate its damage inactivation, and then the accident of avoiding bolt fracture to cause, make wind power generating set good operation stability.
4, adopt the stiffening ring burst of angle type and rectangle bridging arrangement, after installation, between stiffening ring burst, can transmit perpendicular to the power in flanged surface direction by its bridging arrangement, can further share bolt load.
5, be parallel to each other for the interface surface of adjacent burst and interface surface all perpendicular to the stiffening ring burst of flanged surface or class flanged surface, it has design, manufactures easy feature, and on-the-spot installation precision require lower.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is the flanged connecting structure schematic diagram that stiffening ring is not installed;
Fig. 2 is the flanged connecting structure schematic diagram that stiffening ring is installed;
Fig. 3 is the flange reinforcing ring structural representation of combination ring structure;
Fig. 4 is angle type overlap joint stiffening ring burst structural representation;
Fig. 5 is rectangle overlap joint stiffening ring burst structural representation;
Fig. 6 is the stiffening ring burst structural representation that the interface surface of adjacent burst is parallel to each other;
Fig. 7 is class flange (wind generating set pitch control bearing) the linkage structure schematic diagram that stiffening ring is not installed;
Fig. 8 is the linkage structure schematic diagram that the class flange (wind generating set pitch control bearing) of stiffening ring is installed.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
Understand for convenient, now the part term relating in the utility model described:
Flange: its for bolt two fixed fittings that are connected; Class flange: for bearing structure and for bolt be fixedly connected part and rotating component.Both are provided with the bolt hole coordinating with bolt.Taking wind power generating set as example, multiple tower cylinder sections, tower cylinder and the foundation ring of wind-driven generator are wherein fixed fitting, can connect by flange; Tower cylinder and cabin, wheel hub and fan blade, be fixed block and rotating component, can connect by class flange (bearing).
Fig. 1 is the flanged connecting structure schematic diagram that connects two fixed fitting a, b in prior art; Flanged connecting structure comprises: multiple bolts 2 that flange 1 and bolt 2, two fixed fitting a, b coordinate by flange 1 and with flange 1 couple together.On flange 1, be provided with multiple bolt hole (not shown)s that coordinate with bolt 2.The problem that this kind of linkage structure exists is, structural rigidity deficiency, and bolt load is inhomogeneous, causes the lost of life, and replacement cost is too high to redesign flanged connecting structure.
For the problems referred to above, the present embodiment provides a kind of intensifier, i.e. a kind of flange reinforcing ring, by installing this stiffening ring additional, can strengthen structural rigidity and intensity.
As shown in Figure 2, for having installed the flanged connecting structure of flange reinforcing ring 3 additional.This flange reinforcing ring 3 is for coordinating with flanged surface, its structural type can be the along the circumferential direction combination ring structure of mix proportion successively of domain structure or multiple burst 31, and in domain structure, combination ring structure, is equipped with and axially corresponding consistent through hole 32 (shown in cooperation Fig. 3) of bolt hole on flange.
Use basic procedure as follows for the design of flange reinforcing ring: first before using flange reinforcing ring, need to install according to it size of the dimensional parameters design flange reinforcing ring of companion flange, through hole (bolt hole) position of stiffening ring and size need to be mounted the measure-alike of position.Select the one-tenth-value thickness 1/10 of flange reinforcing ring according to the intensity that will strengthen.Then according to the dimensional parameters of the specification of original fastener bolt and new bolt corresponding to Design of length flange reinforcing ring, bolt specification and grade are constant, and length dimension value added is consistent or larger with the one-tenth-value thickness 1/10 of flange reinforcing ring.Complete after the size design of above flange reinforcing ring and bolt, produce corresponding stiffening ring and bolt fastener.
If the form of flange reinforcing ring is the split blade type of non-full circle, the quantity of burst and every length can be carried out particular design according to the flange loads of Environmental Conditions, can select the stiffening ring burst that length is identical, also can select not isometric stiffening ring burst.In addition, in split blade type flange reinforcing ring, the bridging arrangement (angle type bridging arrangement as shown in Figure 4 or rectangle bridging arrangement as shown in Figure 5) that the interface section of adjacent burst is concavo-convex cooperation; Or the interface surface of adjacent burst is parallel to each other, and interface surface is all perpendicular to flanged surface or class flanged surface (as shown in Figure 6).
Adopt the stiffening ring burst of angle type and rectangle bridging arrangement, after installation, between stiffening ring burst, can transmit perpendicular to the power in flanged surface direction by its bridging arrangement.But in the time of Design and manufacture bridging arrangement, need to do higher requirement to design size and machining accuracy, to ensure that the gap of its bridging arrangement is enough little and then can transmit power.And for the interface surface of adjacent burst be parallel to each other and interface surface all perpendicular to the stiffening ring burst of flanged surface, it cannot transmit the power perpendicular to flanged surface, but design, manufacture easy, and facilitate flange reinforcing ring scene install, require lower than first two for installation precision.
In flange reinforcing ring installation process: first the fastener bolt of original installation is removed, flange reinforcing ring is positioned on flanged surface by locating stud, pack clamping bolt into bolt hole, by tightening tool, bolt is tightened on request.
The above-mentioned flange Connecting format of having enumerated between two fixed fittings, between fixed block and rotating component (as the tower cylinder of wind power generating set and cabin, wheel hub and fan blade), can pass through class flange (driftage bearing, pitch variable bearings) and connect, also can there is similar problem in it.Therefore, this flange reinforcing ring also can be used for coordinating with class flange.
As shown in Figure 7, for connecting the pitch variable bearings linkage structure schematic diagram of wheel hub c (fixed block) and fan blade d (rotating component) in prior art; Linkage structure comprises pitch variable bearings 4 and bolt 51,52, and wherein bolt 51 is connected with wheel hub c by the outer shroud of pitch variable bearings 4; Bolt 52 is connected with fan blade d by the interior ring of pitch variable bearings 4.
Through improved linkage structure as shown in Figure 8, be with the difference of Fig. 7, on the end face of pitch variable bearings 4 outer shrouds that coordinate with wheel hub c, install stiffening ring 3 additional.
Above-mentioned flange or the class flanged connecting structure with stiffening ring structure is applied in wind power generating set, can overcome flange in in-service wind power generating set or the problem of class flanged connecting structure safety coefficient deficiency in original design, by strengthening the strength and stiffness of linkage structure, reduce bolt load, avoid the accident being caused by it, strengthen the wind power generating set life-span.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technological scheme that still can record previous embodiment is modified, or part technical characteristics is wherein equal to replacement.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a flange or class flange reinforcing ring, described flange for bolt two fixed fittings that are connected, described class flange be bearing structure and for bolt be fixedly connected part and rotating component, on described flange, class flange, be provided with the bolt hole coordinating with bolt, it is characterized in that:
Described stiffening ring is for coordinating with flanged surface or class flanged surface, for the along the circumferential direction combination ring structure of mix proportion successively of domain structure or multiple burst, and in domain structure, combination ring structure, be equipped with and axially corresponding consistent through hole of bolt hole on flange or class flange.
2. flange according to claim 1 or class flange reinforcing ring, is characterized in that, the bridging arrangement that the interface section of described adjacent burst is concavo-convex cooperation; Or the interface surface of adjacent burst is parallel to each other, and interface surface is all perpendicular to flanged surface or class flanged surface.
3. flange according to claim 2 or class flange reinforcing ring, is characterized in that, described bridging arrangement is angle type bridging arrangement or rectangle bridging arrangement.
4. flange or a class flanged connecting structure, comprises flange and bolt for connecting two fixed fittings, or for class flange and the bolt of connection fixture and rotating component, wherein class flange is bearing structure; It is characterized in that, on flanged surface or class flanged surface, also have additional the stiffening ring described in claim 1-3 any one; Accordingly, the value added of described bolt length is equal to or greater than the thickness of stiffening ring.
5. flange according to claim 4 or class flanged connecting structure, it is characterized in that, the described class flange for connection fixture and rotating component is wind generator set blade pitch variable bearings, wherein fixed block is wheel hub, rotating component is blade, and described stiffening ring is arranged on the end face of the pitch variable bearings outer shroud coordinating with wheel hub.
6. flange according to claim 4 or class flanged connecting structure, is characterized in that, described bearing is wind generating set yaw bearing.
7. a wind power generating set, is characterized in that, contains flange or class flanged connecting structure described in claim 4-6 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420348202.0U CN203925894U (en) | 2014-06-26 | 2014-06-26 | A kind of flange or class flange reinforcing ring, linkage structure and wind power generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420348202.0U CN203925894U (en) | 2014-06-26 | 2014-06-26 | A kind of flange or class flange reinforcing ring, linkage structure and wind power generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203925894U true CN203925894U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420348202.0U Expired - Fee Related CN203925894U (en) | 2014-06-26 | 2014-06-26 | A kind of flange or class flange reinforcing ring, linkage structure and wind power generating set |
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| Country | Link |
|---|---|
| CN (1) | CN203925894U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405734A (en) * | 2014-10-13 | 2015-03-11 | 河海大学 | Buckle type flange connection structure and method for tower and base of wind turbine |
| CN104533728A (en) * | 2014-12-16 | 2015-04-22 | 北京金风科创风电设备有限公司 | Reinforcing device of variable pitch bearing of generator set and impeller structure |
| CN109854462A (en) * | 2019-03-11 | 2019-06-07 | 中国船舶重工集团海装风电股份有限公司 | A kind of wind-driven generator and its blade pitch device |
| CN113539027A (en) * | 2020-12-30 | 2021-10-22 | 北京金风慧能技术有限公司 | Yaw teaching equipment of wind generating set |
-
2014
- 2014-06-26 CN CN201420348202.0U patent/CN203925894U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405734A (en) * | 2014-10-13 | 2015-03-11 | 河海大学 | Buckle type flange connection structure and method for tower and base of wind turbine |
| CN104533728A (en) * | 2014-12-16 | 2015-04-22 | 北京金风科创风电设备有限公司 | Reinforcing device of variable pitch bearing of generator set and impeller structure |
| CN109854462A (en) * | 2019-03-11 | 2019-06-07 | 中国船舶重工集团海装风电股份有限公司 | A kind of wind-driven generator and its blade pitch device |
| CN113539027A (en) * | 2020-12-30 | 2021-10-22 | 北京金风慧能技术有限公司 | Yaw teaching equipment of wind generating set |
| CN113539027B (en) * | 2020-12-30 | 2024-02-06 | 北京金风慧能技术有限公司 | Yaw teaching equipment of wind generating set |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20170626 |
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| CF01 | Termination of patent right due to non-payment of annual fee |