CN211474340U - Flexible spoiler for wind power tower cylinder - Google Patents
Flexible spoiler for wind power tower cylinder Download PDFInfo
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- CN211474340U CN211474340U CN201922234858.5U CN201922234858U CN211474340U CN 211474340 U CN211474340 U CN 211474340U CN 201922234858 U CN201922234858 U CN 201922234858U CN 211474340 U CN211474340 U CN 211474340U
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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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- 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 flexible spoiler of wind power tower cylinder, including two vortex strips, these two vortex strips form crisscross double helix structure of each other along tower section of thick bamboo length direction winding on the outer wall of a tower section of thick bamboo, play the effect of preventing vortex-induced resonance, and every vortex strip all laminates mutually with the outer wall of a tower section of thick bamboo. The utility model discloses a spoiler can effectively prevent vortex-induced resonance, and life is longer, the reliability is higher, the vortex effect is better.
Description
Technical Field
The utility model belongs to the technical field of aerogenerator prevents vortex-induced resonance's technique and specifically relates to indicate a flexible spoiler of wind power tower cylinder.
Background
High towers can encounter vortex-induced vibration problems during installation and operation. Any non-streamline object generates vortex which is separated from the surface of the structure on both sides of the object periodically and alternately under a certain stable flow speed, namely boundary layer separation. The alternately generated vortex can generate pulsating pressure which changes periodically in the transverse direction on the tower body, if the frequency of the pulsating pressure is close to the natural frequency of the structure, the transverse periodic vibration of the tower body can be caused, the regular vibration of the cylindrical body can change the vortex shedding form of the wake flow of the cylindrical body, the separation of surface vortex is worsened, and the phenomenon of fluid-structure interaction is called vortex-induced vibration. Vortex-induced vibration not only influences the hoisting progress of the tower, but also threatens the safety of the tower and the whole machine.
At present, the vortex-induced vibration problem in the process of installing a high tower crane is solved, at present, a mode that a vortex breaking and vibration stopping are realized by adding a turbulence bar tool to the upper-section tower frame in the hoisting stage is adopted, and the vortex-induced vibration problem in the hoisting stage and before the power-on of a unit can also be restrained by installing a damper tool in the installation stage of the tower frame or in a mode of pitch starting and resisting.
Through intensive research and experiments, "vortex-induced vibration" is considered to be the main cause. Vortex-induced vibration was found to have two requirements: a continuously stable karman vortex street; the vortex shedding frequency is close to the natural frequency of the object to form resonance. Therefore, the measure for avoiding the vortex-induced vibration is gradually born, during the hoisting of the tower frame, the separation frequency of the karman vortex street and the first-order frequency of the tower frame are close to easily generate the first-order vortex-induced vibration, and the vortex on the surface of the tower can be effectively destroyed by additionally arranging the turbulence strips, so that the stable generation of the karman vortex street is avoided. A common method is a wound spoiler, which is usually installed during the hoisting of the tower. The hoisting device is made of polyethylene foam, the service life is short, the hoisting device is periodically dismantled according to other factors after hoisting, and the dismantling after hoisting needs to consume more manpower and material resources.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a can effectively prevent vortex-induced resonance and life is longer, the higher flexible spoiler of wind power tower cylinder of reliability.
In order to achieve the above object, the present invention provides a technical solution: the utility model provides a flexible spoiler of wind power tower cylinder, includes two vortex strips, these two vortex strips along tower section of thick bamboo length direction winding on the outer wall of a tower section of thick bamboo, form crisscross double helix structure mutually, play the effect of preventing vortex-induced resonance, and every vortex strip all laminates with the outer wall of a tower section of thick bamboo mutually.
Furthermore, the turbulence strips are of continuous spiral structures formed by a plurality of turbulence sections, every two turbulence sections are connected through insertion, and each turbulence section is fixed on the outer wall of the tower barrel through a shooting nail.
Furthermore, the turbulence strips are of a discontinuous spiral structure formed by a plurality of turbulence sections, the distance between every two turbulence sections is kept, and each turbulence section is fixed on the outer wall of the tower barrel through a shooting nail.
Furthermore, both ends of the first turbulent flow section of each turbulent flow strip are inwards flanged, mounting holes for fixing the injection nails are formed in the flanges, only one end of each of the other turbulent flow sections is inwards flanged, the mounting holes for fixing the injection nails are formed in the flanges, and one end of each of the other turbulent flow sections is an insertion end and is inserted into the adjacent turbulent flow sections in an embedded mode.
Furthermore, both ends of the turbulent flow section are flanged inwards, and mounting holes for fixing the injection nails are formed in the flanges.
Furthermore, the whole of the turbulence section is spirally twisted to adapt to the shape of the outer wall of the tower, and the cross section of the turbulence section is of a triangular structure.
Furthermore, the turbulent flow section is a glass fiber reinforced plastic turbulent flow section.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
the utility model has the advantages that the spoiler only uses one or two spoiler section types to meet the shape following of the tower barrels with different diameters and different tapers; the service life of the spoiler is prolonged by applying the isotropic glass fiber reinforced plastic material; the spoiler is fixed with the outer wall of the tower barrel through the non-welded shooting nail, the reliability of the spoiler is improved, the installation efficiency is improved, the cost is low, the spoiler effect is better, and the tower barrel is effectively prevented from being threatened by vortex excitation in the whole life cycle of 20 years.
Drawings
Fig. 1 is a schematic structural diagram of a flexible spoiler for a wind power tower according to embodiment 1.
Fig. 2 is a schematic structural diagram of a first spoiler section in embodiment 1.
Fig. 3 is a schematic structural diagram of a first turbulent flow segment in embodiment 1.
Fig. 4 is a schematic structural diagram of the remaining spoiler sections in embodiment 1.
FIG. 5 is a first schematic view of the assembly of the first stage spoiler and the second stage spoiler in embodiment 1.
Fig. 6 is an enlarged view of a part a of example 1.
FIG. 7 is a second schematic view of the assembly of the first stage spoiler and the second stage spoiler in embodiment 1.
FIG. 8 is an enlarged partial view B of the first spoiler section fixed to the outer wall of the tower in embodiment 1.
FIG. 9 is a D-direction sectional view of the second flow spoiler section fixed to the outer wall of the tower in embodiment 1.
Fig. 10 is a schematic structural diagram of a flexible spoiler for a wind power tower according to embodiment 2.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Example 1
As shown in fig. 1 to 4, this embodiment a flexible spoiler of wind power tower cylinder, including two vortex strips 1, these two vortex strips 1 along 3 length direction twine on the outer wall of a tower section of thick bamboo 3, form crisscross double helix structure mutually, every vortex strip 1 is the continuous type helical structure who comprises a plurality of vortex sections, two liang of vortex sections link to each other through pegging graft, and every vortex section all adopts to penetrate nail 4 and fix on the outer wall of a tower section of thick bamboo 3 to laminate mutually with the outer wall of a tower section of thick bamboo 3, play the effect of preventing vortex-induced resonance.
Both ends of the first turbulent flow section 11 of the turbulent flow strip 1 are flanged inwards, 4 mounting holes are formed in the flange 111 for mounting the injection nails 4, and the first turbulent flow section 11 is fixed on the outer wall of the tower barrel 3; the other spoiler sections 12 of the spoiler 1 are only flanged inwards at one end, the flange 121 is provided with a mounting hole for fixing the shooting nail 4, and the other end is an insertion end 122 inserted into the adjacent spoiler section. All the turbulence sections are made of glass fiber reinforced plastic in an integrated mode, the whole turbulence sections are spirally twisted to adapt to the shape of the outer wall of the tower barrel 3, and the cross section of each turbulence section is of a triangular structure.
As shown in fig. 5 to 9, the specific installation method of the spoiler 1 is as follows: firstly, a first spoiler section, namely a first spoiler section 11 is installed: installing a shooting nail 4 at a corresponding position on the outer wall of the tower barrel 3, aligning one mounting hole of the first turbulent flow section 11 with the shooting nail 4 and installing the first turbulent flow section 4, adjusting the angle of the first turbulent flow section 11 to be tightly attached to the outer wall of the tower barrel 3, marking the positions of the other three mounting holes of the first turbulent flow section 11 on the outer wall of the tower barrel 3, installing the shooting nail 4 at the marked position, installing the first turbulent flow section 11, and locking the first turbulent flow section 11 by using a locknut 5; then the second spoiler section 12 is installed: inserting the insertion end 122 of the turbulent flow section 12 into the tail part of the first turbulent flow section 11, adjusting the angle of the turbulent flow section 12, tightly attaching to the outer wall of the tower barrel 3, marking the installation hole at the tail part of the turbulent flow section 12, installing a shooting nail 4 at the marked position, and installing a locknut 5 to lock the turbulent flow section 2; and then installing the remaining spoiler sections 12 according to the above method until the installation of the entire spoiler strip 1 is completed.
Example 2
As shown in fig. 10, the present embodiment is different from embodiment 1 in that: the turbulence strips 2 are of a discontinuous spiral structure formed by a plurality of turbulence sections 21, the distance between every two turbulence sections 21 is kept, two ends of each turbulence section 21 are turned inwards, mounting holes for fixing ejection nails are formed in the turned edges, and two ends of each turbulence section 21 are fixed on the outer wall of the tower barrel through the ejection nails.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a flexible spoiler of wind power tower cylinder which characterized in that: including two vortex strips, these two vortex strips along tower section of thick bamboo length direction winding on the outer wall of a tower section of thick bamboo, form crisscross double helix structure mutually, play the effect of preventing vortex-induced resonance, and every vortex strip all laminates with the outer wall of a tower section of thick bamboo mutually.
2. The flexible spoiler of wind tower according to claim 1, wherein: the turbulence strips are of continuous spiral structures formed by a plurality of turbulence sections, every two turbulence sections are connected through insertion, and each turbulence section is fixed on the outer wall of the tower barrel through a shooting nail.
3. The flexible spoiler of wind tower according to claim 1, wherein: the turbulence strips are of a discontinuous spiral structure formed by a plurality of turbulence sections, the distance between every two turbulence sections is kept, and each turbulence section is fixed on the outer wall of the tower barrel through a shooting nail.
4. The flexible spoiler of wind tower according to claim 2, wherein: both ends of the turbulence section at the first section of the turbulence strip are inwards flanged, mounting holes for fixing the injection nails are formed in the flanges, only one end of each of the other turbulence sections is inwards flanged, the mounting holes for fixing the injection nails are formed in the flanges, and the other ends of the turbulence sections are inserted into the adjacent turbulence sections in an inserting mode.
5. The flexible spoiler of wind tower according to claim 3, wherein: both ends of the turbulent flow section are flanged inwards, and mounting holes for fixing the injection nails are formed in the flanges.
6. The flexible spoiler of wind turbine tower according to claim 4 or 5, wherein: the whole of the turbulence section is spirally twisted to adapt to the shape of the outer wall of the tower, and the cross section of the turbulence section is of a triangular structure.
7. The flexible spoiler of wind turbine tower according to claim 4 or 5, wherein: the flow disturbing section is a glass fiber reinforced plastic flow disturbing section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922234858.5U CN211474340U (en) | 2019-12-13 | 2019-12-13 | Flexible spoiler for wind power tower cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922234858.5U CN211474340U (en) | 2019-12-13 | 2019-12-13 | Flexible spoiler for wind power tower cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN211474340U true CN211474340U (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922234858.5U Active CN211474340U (en) | 2019-12-13 | 2019-12-13 | Flexible spoiler for wind power tower cylinder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623140A (en) * | 2021-09-09 | 2021-11-09 | 三一重能股份有限公司 | Vortex-induced vibration suppression device of fan and fan |
| CN113700613A (en) * | 2021-09-23 | 2021-11-26 | 中国华能集团清洁能源技术研究院有限公司 | Tower section of thick bamboo vortex subassembly and tower section of thick bamboo |
-
2019
- 2019-12-13 CN CN201922234858.5U patent/CN211474340U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623140A (en) * | 2021-09-09 | 2021-11-09 | 三一重能股份有限公司 | Vortex-induced vibration suppression device of fan and fan |
| CN113700613A (en) * | 2021-09-23 | 2021-11-26 | 中国华能集团清洁能源技术研究院有限公司 | Tower section of thick bamboo vortex subassembly and tower section of thick bamboo |
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