CN220134365U - Protection device for be used for weakening vortex-induced vibration in marine wind power tower section of thick bamboo installation - Google Patents
Protection device for be used for weakening vortex-induced vibration in marine wind power tower section of thick bamboo installation Download PDFInfo
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- CN220134365U CN220134365U CN202321625711.9U CN202321625711U CN220134365U CN 220134365 U CN220134365 U CN 220134365U CN 202321625711 U CN202321625711 U CN 202321625711U CN 220134365 U CN220134365 U CN 220134365U
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- vortex
- tower
- sliding rail
- offshore wind
- induced vibration
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- 230000003313 weakening effect Effects 0.000 title claims abstract description 12
- 238000009434 installation Methods 0.000 title claims description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 title description 11
- 235000017491 Bambusa tulda Nutrition 0.000 title description 11
- 241001330002 Bambuseae Species 0.000 title description 11
- 235000015334 Phyllostachys viridis Nutrition 0.000 title description 11
- 239000011425 bamboo Substances 0.000 title description 11
- 238000011900 installation process Methods 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000013016 damping Methods 0.000 abstract description 3
- 239000006096 absorbing agent Substances 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000004690 animal fin Anatomy 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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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- Wind Motors (AREA)
Abstract
The utility model belongs to the field of offshore wind power engineering, and in particular relates to a protection device for weakening vortex-induced vibration in an offshore wind power tower drum installation process, which comprises a tower top fixing piece, a sliding rail assembly and a plurality of vortex assemblies, wherein the tower top fixing piece is arranged at the upper end of the tower drum, the sliding rail assembly is of an annular structure, is sleeved on the outer wall of the tower drum and can rotate relative to the tower drum, and is positioned at the lower end of the tower top fixing piece, the vortex assemblies comprise vortex ropes and a plurality of vortex modules arranged along the length direction of the vortex ropes, the upper end and the lower end of the vortex ropes are respectively connected with the tower top fixing piece and the sliding rail assembly, and the lower end of the vortex ropes can rotate along with the sliding rail assembly so that the vortex assemblies are wound on the outer wall of the tower drum. Compared with a conventionally used damping shock absorber, the utility model has the advantages of low cost and convenient construction, and can effectively avoid the problem of vortex-induced vibration in the construction process of the offshore wind power tower.
Description
Technical Field
The utility model belongs to the field of offshore wind power engineering, and particularly relates to a protection device for weakening vortex-induced vibration in an offshore wind power tower drum installation process.
Background
The complete offshore wind turbine comprises a foundation, a tower, a nacelle, a hub and blades. When offshore installation construction is carried out, split installation is generally adopted, and each large-sized part is hung one by one to a designated position through a crane ship. The height of the tower barrel of the offshore wind turbine generator often reaches hundreds of meters, the flexibility is very high, and the surface of the tower barrel is a smooth cylinder. When the wind turbine generator blades and the engine room are not installed, boundary layer separation can be generated when the airflow which is not disturbed by the rotating blades flows through the surface of the tower barrel, so that an unstable asymmetric vortex shedding phenomenon, namely karman vortex street, is formed. Along with the increase of wind speed, when the frequency that the vortex drops is close to the tower natural frequency, can lead to the tower to receive vortex excitation and produce resonance in the horizontal direction that is perpendicular to the incoming flow for tower structure produces fatigue damage, reduces tower fatigue life. In addition, because the wind turbine generator at the top cannot be installed in place immediately after the tower drum is installed, the vortex-induced resonance of the tower drum can also influence the installation of large components such as a subsequent engine room and blades, and thus potential construction safety hazards are caused.
At present, in order to solve the problem of vortex-induced resonance generated after the wind power tower is installed on site, a method of adding a damper inside the tower is generally adopted. However, the damping vibration attenuation device is generally high in cost, complex in construction and installation, and the vibration attenuation effect is difficult to ensure. Aiming at the potential vortex-induced vibration problem of the existing tower in the hoisting process, the utility model provides a protection device for weakening vortex-induced vibration in the installation process of the offshore wind power tower.
Disclosure of Invention
In order to make up for the defects of the prior art, the utility model provides a technical scheme of a protective device for weakening vortex-induced vibration in the installation process of an offshore wind power tower.
A protective device for attenuating vortex induced vibration during installation of an offshore wind turbine tower, comprising:
the tower top fixing piece is arranged at the upper end of the tower barrel;
the sliding rail component is of an annular structure, is sleeved on the outer wall of the tower barrel and can rotate relative to the tower barrel, and is positioned at the lower end of the tower top fixing piece; and
the vortex assembly comprises a vortex rope and a plurality of vortex modules arranged along the length direction of the vortex rope, wherein the upper end and the lower end of the vortex rope are respectively connected with a tower top fixing piece and a sliding rail assembly, and the lower end of the vortex rope can rotate along with the sliding rail assembly, so that the vortex assembly is wound on the outer wall of the tower.
Further, the spoiler module comprises a sleeve sleeved on the spoiler rope and a spoiler annularly arranged on the sleeve.
Further, the spoiler module and/or the spoiler rope are flexible structures.
Further, the spoiler modules are arranged on the spoiler ropes at intervals, and knots for separating the spoiler modules are arranged on the spoiler ropes.
Further, the sliding rail component comprises a sliding rail body and a plurality of rollers distributed on the sliding rail body in a ring mode, and the rollers are matched with the outer wall of the tower.
Further, set up the socket on the slide rail body, the magnetism is inhaled the piece and is included grafting portion and compress tightly the portion, the external diameter of compressing tightly the portion is greater than the external diameter of grafting portion, and grafting portion inserts corresponding socket and adsorbs on the tower section of thick bamboo, compresses tightly the slide rail body on the tower section of thick bamboo.
Further, the magnetic attraction piece further comprises a handle part arranged on the pressing part.
Further, the periphery of the tower top fixing piece is provided with a plurality of connecting parts, and the connecting parts are connected with the turbulent flow ropes in a one-to-one correspondence manner.
Compared with the prior art, the utility model has the beneficial effects that:
1) Compared with a conventionally used damping shock absorber, the utility model has the advantages of low cost and convenient construction, and can effectively avoid the problem of vortex-induced vibration in the construction process of the offshore wind power tower;
2) The sliding rail is adsorbed on the outer wall of the tower through the magnetic attraction piece, fastening measures such as bolts and welding are not needed, and the sliding rail can be quickly fixed and detached;
3) The tower top fixing piece fully utilizes the existing flange plate at the top of the tower barrel as a fixing base, and can complete the fixation of the protecting device only by manually screwing a small number of bolts, thereby being convenient and efficient;
4) The folding spoiler is light in weight and convenient to fold and store, is beneficial to on-site rapid retraction and release, and can improve on-site operation efficiency.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model in use;
FIG. 2 is a schematic top view of the tower top fixture of the present utility model mated with a flange;
FIG. 3 is a schematic view of a turbulence model according to the present utility model;
FIG. 4 is a schematic view illustrating a structure of the spoiler assembly of the present utility model when being received;
FIG. 5 is a schematic view of a sliding rail assembly according to the present utility model;
FIG. 6 is a schematic view of a magnetic attraction member according to the present utility model;
FIG. 7 is a schematic view of a spoiler assembly of the present utility model wrapped around an outer wall of a tower;
in the figure: the tower 1, the slide rail assembly 2, the roller 21, the magnetic attraction piece 22, the inserting part 221, the pressing part 222, the handle part 223, the spoiler 3, the spoiler 31, the sleeve 32, the tower top fixing piece 4, the spoiler rope 5, the flange 6 and the rope knot 7.
Detailed Description
In the description of the present utility model, it should be understood that the terms "one end," "the other end," "the outer side," "the upper," "the inner side," "the horizontal," "coaxial," "the center," "the end," "the length," "the outer end," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
The utility model is further described below with reference to the accompanying drawings.
Referring to fig. 1-7, a protection device for weakening vortex-induced vibration in an offshore wind power tower installation process comprises a tower top fixing piece 4, a sliding rail assembly 2 and a plurality of turbulence assemblies, wherein the tower top fixing piece 4 is arranged at the upper end of the tower 1. The sliding rail component 2 is of an annular structure, is sleeved on the outer wall of the tower 1 and can rotate relative to the tower 1, and is positioned at the lower end of the tower top fixing piece 4. The vortex subassembly includes vortex rope 5 and a plurality of vortex module 3 that set up along vortex rope 5 length direction, and the upper and lower both ends of vortex rope 5 are connected with top of the tower mounting 4 and slide rail assembly 2 respectively, and the lower extreme of vortex rope 5 can rotate along with slide rail assembly 2 together, makes the vortex subassembly twine on tower section of thick bamboo 1 outer wall.
With continued reference to fig. 2, the tower top fixing member 4 has a herringbone structure, and three connecting portions are arranged around the tower top fixing member, and the tower top fixing member is hung on a flange 6 at the top of the tower 1 through a crane during construction and fastened to the tower 1 through bolts, wherein the connecting portions are used for being connected with the turbulent flow ropes 5.
The spoiler module 3 comprises a sleeve 32 sleeved on the spoiler rope 5 and a spoiler 31 annularly arranged on the sleeve 32, the spoiler 31 is of a fish fin structure, the spoiler 31 and the spoiler rope 4 are both made of flexible materials,
with continued reference to fig. 3, the spoiler module 3 is composed of a sleeve 32 and a fin-shaped spoiler 31, and both components are made of light flexible materials, so that the overall weight of the spoiler protection device is reduced, and meanwhile, unnecessary scratch damage to the anti-corrosion paint on the outer wall of the tower 1 is avoided. The spoiler 31 can effectively interfere with the flow field of the air flow flowing through the rugged tower wall, so that turbulence with certain intensity is formed to weaken the intensity of vortex-induced vibration. The sleeve 32 is hollow, and the spoiler rope 5 passes through the sleeve 32 to fix the spoiler module 3.
With continued reference to fig. 4, a plurality of spoiler modules 3 are connected in series on the spoiler rope 5 end to end at a certain interval, and the spoiler modules 3 are separated by knots 7. The knots 7 may serve as positioning anti-slip measures for the spoiler 3. Because the spoiler module 3 adopts the flexible rope 5 to connect in series, the spoiler protection device can be stored in a folding way to save storage space. The serial number of the spoiler modules 7 can be flexibly adjusted according to the tower height to be protected.
With continued reference to fig. 5 and 6, the sliding rail assembly 2 includes a sliding rail body, a plurality of rollers 21 uniformly distributed around the inner side of the sliding rail body, and a plurality of magnetic attraction members 22 uniformly distributed around the sliding rail body. The slide rail body is the ring type, and in the use middle ring staple bolt structure is embraced in tower section of thick bamboo 1 outer wall to there is the clearance with the outer wall, spoiler rope 5 lower extreme is connected on the slide rail body, and the tie point is cyclic annular equipartition. The gyro wheel 21 sets up in the slide rail body is inboard, and only part stretches out from the slide rail body inboard to cooperate with tower section of thick bamboo 1 outer wall, gyro wheel 21 can roll on tower section of thick bamboo 1 outer wall, and gyro wheel 21 is convenient for slide rail assembly 2 realize the rotation around tower section of thick bamboo 1 central axis at tower section of thick bamboo 1 surface, makes vortex subassembly winding on tower section of thick bamboo 1 outer wall. The socket is arranged on the sliding rail body, the magnetic attraction piece 22 comprises an inserting part 221, a compressing part 222 and a handle part 223 which are sequentially connected, the outer diameter of the compressing part 222 is larger than that of the inserting part 221, the inserting part 221 is inserted into the corresponding socket from the outer side of the sliding rail body and is adsorbed on the tower 1, the compressing part 222 compresses the sliding rail body on the tower 1, the handle part 223 is used for human operation, the inserting part 221 is a magnet, and the compressing part 222 and the handle part 223 can be made of other hard materials. When the magnetic attraction piece 22 is used, the magnetic attraction piece 22 is inserted into the socket of the slide rail body, so that the magnetic attraction piece 22 is adsorbed on the outer wall of the tower 1, and the slide rail body is fixed. When the device is removed, the magnetic attraction piece 22 is pulled out of the socket.
The installation process of the utility model is as follows:
1) Firstly, determining the number of the spoiler modules 3 and the length of the spoiler ropes 5 according to the height of the tower 1 needing vortex-induced vibration protection, and assembling the spoiler modules on land.
2) The spoiler assembly is connected with the tower top fixing piece 4.
3) After the tower 1 is installed, the tower top fixing piece 4 and the turbulent flow assembly are integrally lifted and placed on the flange 6 at the top of the tower 1 through the large crane. The tower top fixing piece 4 is connected with the flange plate 6 by bolts, so that the protection device is fixed on the tower barrel 1. The spoiler rope 5 and the spoiler module 3 freely drop and are attached to the surface of the tower 1.
4) An annular sliding rail body is arranged at the tail end of a turbulent flow rope 5 falling at the bottom of the tower 1, and the sliding rail assembly 2 is hung at the lower end of the turbulent flow assembly.
5) On the platform at the bottom of the tower 1, the slide rail body is manually rotated, so that the turbulence assembly is spirally wound on the outer wall of the tower 1.
6) The magnetic attraction piece 22 is inserted into the slide rail body, so that the slide rail body is fixed on the outer wall of the tower 1, and the slide rail body does not slide.
7) After the vortex-induced vibration protection of the tower 1 is completed, the magnetic attraction piece is pulled out, the sliding rail body is removed, and the protection device is dismounted and integrally lifted through the large crane.
And hoisting the fan and other large parts continuously to finish the field installation of the offshore wind turbine.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (9)
1. A protective device for attenuating vortex induced vibration during installation of an offshore wind turbine tower, comprising:
the tower top fixing piece (4), the tower top fixing piece (4) is arranged at the upper end of the tower barrel (1);
the sliding rail assembly (2) is of an annular structure, is sleeved on the outer wall of the tower cylinder (1) and can rotate relative to the tower cylinder (1), and is positioned at the lower end of the tower top fixing piece (4); and
the vortex assembly comprises a vortex rope (5) and a plurality of vortex modules (3) arranged along the length direction of the vortex rope (5), wherein the upper end and the lower end of the vortex rope (5) are respectively connected with a tower top fixing piece (4) and a sliding rail assembly (2), and the lower end of the vortex rope (5) can rotate along with the sliding rail assembly (2), so that the vortex assemblies are wound on the outer wall of the tower barrel (1).
2. The protection device for weakening vortex induced vibration in the installation process of the offshore wind power tower according to claim 1, wherein the vortex module (3) comprises a sleeve (32) sleeved on the vortex rope (5) and a vortex plate (31) annularly arranged on the sleeve (32).
3. A protective device for attenuating vortex induced vibrations in an offshore wind tower installation according to claim 2, characterized in that the spoiler module (3) and/or the spoiler rope (5) are of flexible construction.
4. The protection device for weakening vortex induced vibration in the installation process of the offshore wind power tower according to claim 2, wherein the vortex modules (3) are arranged on the vortex rope (5) at intervals, and knots (7) for separating the vortex modules (3) are arranged on the vortex rope (5).
5. A protection device for attenuating vortex induced vibration in an offshore wind power tower installation process according to claim 1, wherein the sliding rail assembly (2) comprises a sliding rail body and a plurality of rollers (21) annularly distributed on the sliding rail body, and the rollers (21) are matched with the outer wall of the tower (1).
6. The protection device for weakening vortex-induced vibration in an offshore wind turbine tower installation process according to claim 5, wherein the sliding rail assembly (2) further comprises a magnetic attraction piece (22) arranged on the sliding rail body, and the sliding rail assembly (2) is fixed on the tower (1) through the magnetic attraction piece (22).
7. The protection device for weakening vortex-induced vibration in an offshore wind turbine tower installation process according to claim 6, wherein the sliding rail body is provided with a socket, the magnetic attraction piece (22) comprises a plug-in part (221) and a pressing part (222), the outer diameter of the pressing part (222) is larger than that of the plug-in part (221), the plug-in part (221) is inserted into the corresponding socket and is adsorbed on the tower (1), and the sliding rail body is pressed on the tower (1) by the pressing part (222).
8. A protective device for attenuating vortex induced vibration during installation of an offshore wind turbine tower according to claim 7, wherein the magnetic attraction member (22) further comprises a handle portion (223) provided on the hold-down portion (222).
9. The protection device for weakening vortex induced vibration in the installation process of the offshore wind power tower according to claim 1, wherein the periphery of the tower top fixing piece (4) is provided with a plurality of connecting parts, and the connecting parts are connected with the vortex ropes (5) in a one-to-one correspondence manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321625711.9U CN220134365U (en) | 2023-06-26 | 2023-06-26 | Protection device for be used for weakening vortex-induced vibration in marine wind power tower section of thick bamboo installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321625711.9U CN220134365U (en) | 2023-06-26 | 2023-06-26 | Protection device for be used for weakening vortex-induced vibration in marine wind power tower section of thick bamboo installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220134365U true CN220134365U (en) | 2023-12-05 |
Family
ID=88951544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321625711.9U Active CN220134365U (en) | 2023-06-26 | 2023-06-26 | Protection device for be used for weakening vortex-induced vibration in marine wind power tower section of thick bamboo installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220134365U (en) |
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2023
- 2023-06-26 CN CN202321625711.9U patent/CN220134365U/en active Active
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