CN202783720U - Extension-type damping device and draught fan base floating at sea - Google Patents
Extension-type damping device and draught fan base floating at sea Download PDFInfo
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- CN202783720U CN202783720U CN2012203167402U CN201220316740U CN202783720U CN 202783720 U CN202783720 U CN 202783720U CN 2012203167402 U CN2012203167402 U CN 2012203167402U CN 201220316740 U CN201220316740 U CN 201220316740U CN 202783720 U CN202783720 U CN 202783720U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provided an extension-type damping device used on a draught fan base floating at sea and a draught fan base floating at sea including the extension-type damping device. The extension-type damping device comprises a damping disc and an extension main beam connected on upper portion of the damping disc. A quality tuning damper structure is placed inside the extension main beam. The extension-type damping device and the draught fan base floating at sea can obviously reduce movement range of the whole floating-type draught fan, saves investment, is obvious in effect and capable of supporting normal operation of a draught fan set at sea.
Description
Technical field
The floating type offshore wind turbine base that the utility model relates to a kind of scalable damping arrangement and has described scalable damping arrangement.
Background technology
Therefore there are abundant wind-resources and wide exploitation area in the sea, increasingly develops completely with landing field high-quality wind field resource, and each main blower fan is made commercial city and begun development priority is shifted to the sea in the world wide.Compare with the landwid electric field construction, marine wind electric field will be in the face of the test of the multiple load such as stormy waves stream, and environmental conditions is more complicated, and the technological development difficulty is larger, faces many new challenges.At present, intertidal zone, subtidal zone mudflat wind electric field and offshore wind farms, these depth of waters are no more than 50 meters marine wind electric field and usually adopt fixed type basic design form, mainly comprise gravity type foundation, single pile or many pile foundations, jacket basis, negative pressure bucket formula basis etc.
2011, National Energy Board and National Bureau of Oceanography unite formulation and have put into effect " offshore wind farm development ﹠ construction management tentative method detailed rules for the implementation ", according to these detailed rules and regulations, marine wind electric field should be no less than 10 kilometers in the offshore distance in principle, the marine site depth of water must not be less than 10 meters marine site layout when the beach width surpassed 10 kilometers, as seen, the developing direction of following offshore wind farm is to the deep-sea development away from the bank.In the zone, deep-sea away from the continent, the more more high-qualitys of the wind-resources that can develop, market outlook are also more wide.
Present stage, in order to develop the needs of deep-sea wind-powered electricity generation, people's deep-sea floating type oil platform pattern that the marine oil industry is commonly used is applied in the wind-powered electricity generation field, has in succession developed the floating type blower fan that adopts single column platform (SPAR), semisubmersible platform (Semi-submersible), tension leg platform (TLP).Adopt the location pattern of typical floating type blower fan of this three types as shown in table 1:
Table 1
| Project name | The basic design pattern | The mooring locate mode |
| Norway Hywind project | Single upright post basic | The catenary position fixing system |
| Vestas and Windfloat collaborative project | The semisubmersible basis | The catenary position fixing system |
| Holland BlueH project | Tension leg platform | The tension leg position fixing system |
Three kinds of floating type basis patterns shown in the table 1 are applied in petroleum industry the earliest, the suffered upper load of petroleum drilling and mining platform and floating type offshore wind turbine base is widely different, be embodied in: except bearing the environmental load effects such as stormy waves stream, the upper load that the petroleum drilling and mining platform bears is comparatively single, be mainly chunk and equipment self-weight Fz, and need to bearing this tall and slender structure of blower fan, floating type offshore wind turbine base moves caused gyro turning leverage, capsizing moment Mx, My and around the moment of torsion Mz of vertical axis, whole blower fan can produce the strenuous exercise of six-freedom degree, comprise X-axis, the axial motion of Y-axis and Z axis and around the swing of axle, change oar and the yaw control system of fan bring huge challenge, can have influence on the normal operation of blower fan, affect electric energy generated, even the safety of entail dangers to whole system structure.
The SPAR platform that adopts in the Hywind project is because waterplane area own is less, the water body additional damping that provides is very little, and under the effect of blower fan load Mx, My, Mz, the corner of whole platform can be very large, under the blower fan limiting condition even can reach more than 40 °, this is that fan design institute is unallowed.Thereby the Hywind project is when adopting SPAR platform pattern, need to be at corner direction design damper, but this will additionally increase design difficulty and construction costs.
The blower foundation form that Vestas and Windfloat collaborative project adopt is the semisubmersible structure, and main body is comprised of three floating drums at a distance of 35m, and assembling is therein on floating drum, the positioning system using mooring location on basis.For the heave, pitching and the first motion amplitude of direction that shakes that effectively reduce blower foundation, this semisubmersible structure need to arrange in the bottom of each floating drum the damping that damping panel increases heave movement.
What the BlueH project adopted is tension leg platform, has adopted the tension leg of many tensionings, and under this locate mode, larger pretension makes tension leg platform less in out-of-plane motion (rolling, pitching and vertical swinging) amplitude, is similar to rigidity.But under this locate mode, tension leg platform motion (swaying, surging and head shake) amplitude planar is relatively large.Thereby, in order to suppress the motion in this floating type basic plane, just need to damper be set at each sense of motion, this will increase the design-build difficulty on basis undoubtedly.
Therefore, need the floating type blower fan of a kind of economical and practical, compact conformation of research and development, motion characteristics excellence, make the construction of marine wind electric field to the deep-sea regional development, take full advantage of the wide marine wind energy resource of China.
The utility model content
Main purpose of the present utility model provides a kind of simple and reliable for structure, reduced investment, make things convenient for installation, can effectively reduce the floating type blower foundation of complete machine motion amplitude, adopt the floating type blower fan of the basic pattern of this kind, be better than traditional floating type blower foundation on the exercise performance, for floating type fan operation maximum possible the smooth operation environment is provided, ensure that blower fan normally moves generating.
According to one side of the present utility model, a kind of scalable damping arrangement for floating type offshore wind turbine base is provided, it is characterized in that, the flexible girder that described scalable damping arrangement comprises dampened disk and is connected to the dampened disk upside is provided with the tuned mass damper structure in the described flexible girder.
Described dampened disk can comprise annular or the circular vertical plate that swings.
Described flexible girder comprises the urceolus of both ends open and inserts inner core in the urceolus, and the urceolus lower end connects dampened disk, and the inner core upper end is connected to blower foundation, and the tuned mass damper structure is arranged between the inwall of the outer wall of inner core and urceolus.
Described tuned mass damper structure comprises damper, removable slide block and the spring that connects in turn, the damper upper end is connected on the upper end inwall of urceolus, the lower end of spring is connected on the lower end inwall of urceolus, being equipped with on the inner core can be along the stop pin of inner core radial expansion, when in the stop pin retraction inner core, urceolus swings plate together with hanging down and can slide up and down along the outer wall of inner core, when stop pin stretches out, is locked in the groove of removable slide block.
Described hang down swung the plate upside and is provided with stabilizer, and described hang down to swinging be provided with the flow-disturbing hole on the plate.Described hang down swung plate to offer the air permeability rate in flow-disturbing hole is 8%～12%.Described vertical swinging is provided with reinforced rib on the plate.
The lower end of described flexible girder is connected on the stabilizer sheet.
According on the other hand of the present utility model, provide a kind of floating type offshore wind turbine base that comprises above-mentioned scalable damping arrangement.
Described flexible girder is connected to bottom or the sidepiece of floating type offshore wind turbine base.
Described floating type offshore wind turbine base comprises a plurality of floating drums and is connected to truss between described a plurality of floating drum.The quantity of described floating drum is three, is equilateral triangle and arranges, and flexible girder is connected to the central part of floating drum or is connected to the outside portion of floating drum.The quantity of described floating drum and flexible girder is three, and corresponding the connection.
Described floating type offshore wind turbine base is single upright post basic, semisubmersible basis or tension leg platform.
Also comprise control system on the described floating type blower foundation, and post the acceleration/accel displacement pickup at the floating type blower foundation, displacement and the acceleration responsive situation of acceleration/accel displacement pickup Real Time Monitoring floating type blower foundation, control system is regulated stroke automatically according to base response.
The utility model can significantly reduce floating type complete blower motion amplitude, reduced investment, and successful can be used for supporting the normal operation of large megawatt offshore wind farm unit.
Description of drawings
By below in conjunction with accompanying drawing exemplary embodiment of the present utility model being described, above and other purpose of the present utility model and characteristics will become apparent, wherein:
Fig. 1 is the floating type offshore wind turbine base with scalable dampened disk according to the utility model embodiment;
Fig. 2 shows according to the flexible girder in the scalable damping arrangement of the utility model embodiment and the connection structure of tuned mass damper;
Fig. 3 shows the example that is connected according to scalable damping arrangement with the floating type offshore wind turbine base of the utility model embodiment.
The specific embodiment
Now, describe with reference to the accompanying drawings exemplary embodiment of the present utility model in detail.Although described the utility model with reference to particular example, yet the utility model can be implemented with multiple different form, and should not be construed as be limited to exemplary embodiments set forth herein.
Fig. 1 is the floating type offshore wind turbine base with scalable dampened disk according to the utility model embodiment.Fig. 2 shows according to the flexible girder in the scalable damping arrangement of the utility model embodiment and the connection structure of tuned mass damper.Fig. 3 shows the example that is connected according to scalable damping arrangement with the floating type offshore wind turbine base of the utility model embodiment.
As shown in Figure 1, the floating type offshore wind turbine base 100 with scalable damping arrangement according to the utility model embodiment comprises floating drum 110 and truss 120.In this example, three floating drums 110 are equilateral triangle to be arranged, and links to each other by truss 120 between the floating drum 110, consists of the main body of blower foundation 100.A short column is established in floating type offshore wind turbine base 100 centers, links to each other with blower fan pylon 180, in order to support wind power generating set.
Can be connected to bottom (for example, shown in Figure 1) or the sidepiece (for example, shown in Figure 3) of floating type blower foundation according to the scalable damping arrangement of the utility model embodiment.In the example depicted in fig. 1, scalable damping arrangement is connected to the bottom of floating drum 110.Scalable damping arrangement comprises dampened disk 130, flexible girder 140 and tuned mass damper 150.The upper end of flexible girder 140 is connected to the bottom of blower foundation, and the lower end is connected on the dampened disk 130.In this example, dampened disk 130 is connected with floating drum 110 bottoms by three flexible girders 140.Flexible girder 140 is connected by tuned mass damper (TMD) 150 telescopicallies with the vertical of floating drum 110, and other directions are for being rigidly connected.In one example, the rigidity of TMD 150 can be set to floating type blower foundation 100 vertical hydrostatic power rigidity 20%.
Fig. 2 shows according to the flexible girder in the scalable damping arrangement of the utility model embodiment and the connection structure of tuned mass damper.As shown in Figure 2, flexible girder 140 comprises urceolus 1410 and inner core 1420.Tuned mass damper 150 is embedded between urceolus 1410 and the inner core 1420.The below describes the annexation between flexible girder 140 and the tuned mass damper 150 in detail.
As shown in Figure 2, urceolus 1410 is fixedly connected on the vertical of dampened disk 130 and swings on the plate 1301, and urceolus all has opening in two ends about in the of 1410, and inner core 1420 passes urceolus 1410 and inserts in the urceolus 1410.Be provided with a plurality of stop pins 1421 that separate according to predetermined space on the inner core 1420.Described stop pin 1421 can according to control along inner core extend radially out or the inner core 1420 of retracting in.Two stop pins shown in Fig. 2 only are examples, and the quantity of stop pin and interval can arrange according to the design needs.
The upper end of urceolus 1410 also is connected with draw bar (or drag rope) 160, is used for moving up and down together with dampened disk by the draw bar application of force is dragged urceolus.Be connected to draw bar 160 on the urceolus 1410 by driving, urceolus 1410 can be swung plate 1301 together with hanging down and move up and down along inner core 1402.When moving to a certain position, by control setup the stop pin 1421 on the inner core 1420 is stretched out, and be stuck in the draw-in groove of the removable slide block 1502 between damper 1501 and the spring 1503, swing the plate location thereby will hang down.Such as the position that again needs up-down adjustment to hang down and swing plate, can the stop pin 1421 of inner core 1420 be regained by control, then swing plate by draw bar 160 moving verticals, until the desired location, again by stop pin 1421 location.
Dampened disk 130 is for having the vertical plate 1301 that swings in flow-disturbing hole.Dampened disk 130 is preferably annular and circle.In the example depicted in fig. 1, hang down and a plurality of stabilizer sheets can vertically be installed on the upper surface swing plate 1301.But the stabilizer sheet not necessarily.For example, in the example depicted in fig. 3, hang down and to swing plate and can not have the stabilizer sheet.
In Fig. 1 and embodiment shown in Figure 3, dampened disk 130 is hung down by the annular that has flow-disturbing hole (for example, 8%～12% air permeability rate) and swings plate 1301 and stabilizer sheet 1302 forms.Hanging down to swinging can arrange orthogonal stiffeners to strengthen the rigidity of structure on the plate 1301, improve the reliability of dampened disk 130.
Consider that from stability flexible girder 140 can be fixed on the position corresponding with stabilizer sheet 1301, swing the coupling stiffness of plate 1302 so that strengthen flexible girder 140 by stabilizer sheet 1301 with hanging down.But flexible girder 140 also can be directly installed on the position that separates with stabilizer sheet 1301, swings on the plate 1302 and be directly installed on to hang down.In addition, in the exemplary embodiment, it is identical with the quantity of the girder that stretches that the quantity of stabilizer sheet 1301 is set to, and still, the utility model is not limited to this, and the quantity of stabilizer sheet can be different from the quantity of flexible girder, can be greater or less than three.
For the offshore wind turbine floating type basis of adopting according to scalable damping arrangement of the present utility model, can utilize hydraulic-driven, winch or ball-screw or other can realize that the device of Telescopic finishes the flexible operation of flexible girder 140.Whole telescopic system is the active telescopic system, post the acceleration/accel displacement pickup on the floating type blower foundation, the displacement of Real Time Monitoring floating type blower foundation and acceleration responsive situation, complete machine control system is regulated stroke automatically according to base response, realize changing the effect of base integral rigidity and damping, and then reduce targetedly base response.
Although in exemplary embodiment of the present utility model, scalable damping arrangement is provided with 3 flexible girders,, the quantity of flexible girder can be set to more than 3 according to the scale on floating type basis.In addition, in the exemplary embodiment, the structure of floating type blower foundation is three floating drums that connect by truss, and is connected with three flexible girders.But the utility model is not limited to this, and the quantity of floating drum can be set to more than 3.Simultaneously, adopt the floating type basis of the scalable damping arrangement in the utility model also to be not limited to the example arrangement that provides in the example, scalable damping arrangement in the utility model can be applied to various types of floating types basis, for example, single upright post basic, semisubmersible basis, tension leg platform etc.
For single upright post basic, the top truss in the scalable damping arrangement can be connected as one with a framed structure, then be fixed on single upright post basic outside.Top truss in the scalable damping arrangement can be connected with the connecting material that compound anchor chain line, steel rope or other stiffness and strengths meet the demands for many spar structures.
The basis damping of blower fan floating type comprises three kinds of compositions: the first is the inherent damping of blower fan upper brace, depends on foundation outline size and drinking water situation, and damping value is constant; The second is the damping composition that TMD150 provides, and damping value is constant; The third hangs down for the lower end and swings the damping composition that plate provides, and damping value is relevant with the degree of depth.When the floating type basic displacement, when acceleration/accel is larger, drive retractor device by control system and will hang down and swing plate and place the darker position of the depth of water, increase system damping, and then reduce the floating type base response.
Adopt the floating type basis of scalable damping arrangement of the present utility model can have following advantage:
(1) larger area of dampened disk hangs down and to swing plate, increased the floating type blower foundation vertically swing, the horizontal stroke/added mass of pitching direction, additional damping, greatly reduce the floating type blower foundation vertically swing, horizontal stroke/pitching motion amplitude.Dampened disk is positioned at the deep water place, is subjected to wave effect little, can additionally not increase the wave excitation, because its present position is darker, has reduced the center-of-gravity position on whole basis on the contrary, has increased horizontal stroke/pitching hydrostatic power and has replied rigidity, has strengthened basic stability.Hang down and to swing plate and have the larger vertical mass coefficient Ca (Ca＞7) that swings, increased the vertical added mass that swings of floating type blower foundation, swing cycle T h so that hang down in the basis
M is the total weight of whole unsteady blower fan, and Ca is vertical mass coefficient, and K is vertical hydrostatic power rigidity) remain on more than the 20s, thus avoided the frequency limit that Wave energy is concentrated, avoid resonance, improved the rough water quality of floating type offshore wind turbine base;
(2) the stabilizer sheet of dampened disk, the head that has increased floating type offshore wind turbine base shakes added mass and the additional damping of motion, reduced to have guaranteed the reliability service of fan yaw system because the head of the blower foundation that the moment of torsion around vertical axis that produces in the fan operation process causes shakes motion amplitude;
(3) be connected by tuned mass damper (TMD) between dampened disk and the floating type blower foundation, by implementing hydrodynamic analysis and Dynamics Simulation Analysis, can choose rational rigidity and damping coefficient, for the period of a wave of typical sea situation, so that the heaving amplitude of floating type blower foundation further reduces to reach 20%;
(4) dampened disk of this floating type blower foundation is realized lifting by flexible girder, applicable in the more shallow port and pier complete machine assembly unit of the depth of water, also can avoid horizontal transportation in the transportation on the other hand, guarantee that dampened disk is not damaged by pressure by main platform body, in addition also for convenience detach removing.Flexible girder can be connected with the floating type blower foundation by multiple connection mode, can be connected to the bottom of blower foundation, also can be connected to the sidepiece of blower foundation;
(5) the dampened disk structure in the utility model, technique is simple, and is easy to process, be easy to realize, dampened disk with scalable the connection also be easy to realization between the basic main body;
(6) floating type offshore wind turbine base of this scalable damping arrangement has been installed, has been improved than the exercise performance of traditional semisubmersible blower foundation and reach 40%～50%.
In addition, can calculate by the complete machine dynamics software with aerodynamic force-hydrodynamic force coupling function offshore floating type complete machine dynamic response, check bottom fan platform response amplitude, guarantee that aerogenerator is in the position range of normal power generation.Be aided with again the model basin test, optimize the utility model scheme.
Although illustrated by reference to the accompanying drawings and described exemplary embodiment of the present utility model, but what those skilled in the art should understand that is, in the situation that does not break away from the principle of the present utility model that limited its scope by claim and equivalent thereof and spirit, can carry out multiple modification to exemplary embodiment.
Claims (17)
1. a scalable damping arrangement that is used for floating type offshore wind turbine base is characterized in that the flexible girder that described scalable damping arrangement comprises dampened disk and is connected to the dampened disk upside is provided with the tuned mass damper structure in the described flexible girder.
2. scalable damping arrangement as claimed in claim 1 is characterized in that, described dampened disk comprises annular or the circular vertical plate that swings.
3. scalable damping arrangement as claimed in claim 2, it is characterized in that, described flexible girder comprises the urceolus of both ends open and the inner core in the insertion urceolus, the urceolus lower end connects dampened disk, inner core upper end is connected to blower foundation, and the tuned mass damper structure is arranged between the inwall of the outer wall of inner core and urceolus.
4. scalable damping arrangement as claimed in claim 3, it is characterized in that, described tuned mass damper structure comprises damper, removable slide block and the spring that connects in turn, the damper upper end is connected on the upper end inwall of urceolus, the lower end of spring is connected on the lower end inwall of urceolus, being equipped with on the inner core can be along the stop pin of inner core radial expansion, when in the stop pin retraction inner core, urceolus swings plate together with hanging down and can slide up and down along the outer wall of inner core, when stop pin stretches out, be locked in the groove of removable slide block.
5. scalable damping arrangement as claimed in claim 2 is characterized in that, described hang down swung the plate upside and be provided with stabilizer, and described hang down to swinging be provided with the flow-disturbing hole on the plate.
6. such as the described scalable damping arrangement of each claim among the claim 2-5, it is characterized in that described hang down swung plate to offer the air permeability rate in flow-disturbing hole be 8%～12%.
7. such as the described scalable damping arrangement of each claim among the claim 2-5, it is characterized in that described vertical swinging is provided with reinforced rib on the plate.
8. such as the described scalable damping arrangement of each claim among the claim 2-5, it is characterized in that the lower end of described flexible girder is connected on the stabilizer sheet.
9. such as the described scalable damping arrangement of each claim among the claim 3-5, it is characterized in that, be provided with draw bar or drag rope on the described urceolus.
10. floating type offshore wind turbine base that comprises each described scalable damping arrangement among the claim 1-9.
11. floating type offshore wind turbine base as claimed in claim 10 is characterized in that, described flexible girder is connected to bottom or the sidepiece of floating type offshore wind turbine base.
12. floating type offshore wind turbine base as claimed in claim 10 is characterized in that, described floating type offshore wind turbine base comprises a plurality of floating drums and is connected to truss between described a plurality of floating drum.
13. floating type offshore wind turbine base as claimed in claim 12 is characterized in that, the quantity of described floating drum is three, is equilateral triangle and arranges, and flexible girder is connected to the central part of floating drum or is connected to the outside portion of floating drum.
14. floating type offshore wind turbine base as claimed in claim 12 is characterized in that, the quantity of described floating drum and flexible girder is three, and corresponding the connection.
15., it is characterized in that described floating type offshore wind turbine base is single upright post basic, semisubmersible basis or tension leg platform such as claim 10 or 11 described floating type offshore wind turbine bases.
16. such as the described floating type offshore wind turbine base of each claim in the claim 10 to 14, it is characterized in that, also comprise control system on the described floating type blower foundation, and post the acceleration/accel displacement pickup at the floating type blower foundation, displacement and the acceleration responsive situation of acceleration/accel displacement pickup Real Time Monitoring floating type blower foundation, control system is regulated stroke automatically according to base response.
17. such as the described floating type offshore wind turbine base of each claim among the claim 1-14, it is characterized in that, also comprise hydraulic-driven, winch or ball-screw, be used for driving flexible girder and realize Telescopic.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012203167402U CN202783720U (en) | 2012-06-29 | 2012-06-29 | Extension-type damping device and draught fan base floating at sea |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012203167402U CN202783720U (en) | 2012-06-29 | 2012-06-29 | Extension-type damping device and draught fan base floating at sea |
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| CN102720209A (en) * | 2012-06-29 | 2012-10-10 | 北京金风科创风电设备有限公司 | Telescopic damping device and offshore floating type fan foundation |
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| CN110422297A (en) * | 2019-08-09 | 2019-11-08 | 浙江海洋大学 | A kind of inhibition device of semisubmersible platform heaving |
| CN110466705A (en) * | 2019-07-08 | 2019-11-19 | 河海大学 | A kind of semi-submersible type offshore wind turbine self-stabilization equipment |
| CN110805529A (en) * | 2019-09-20 | 2020-02-18 | 株洲时代新材料科技股份有限公司 | Tuned mass damping device |
| CN110805530A (en) * | 2019-09-20 | 2020-02-18 | 株洲时代新材料科技股份有限公司 | Tuned mass damping device |
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