CN105587471A - Protecting device for wind turbine tower - Google Patents
Protecting device for wind turbine tower Download PDFInfo
- Publication number
- CN105587471A CN105587471A CN201610052379.XA CN201610052379A CN105587471A CN 105587471 A CN105587471 A CN 105587471A CN 201610052379 A CN201610052379 A CN 201610052379A CN 105587471 A CN105587471 A CN 105587471A
- Authority
- CN
- China
- Prior art keywords
- circular ring
- wind turbine
- wind
- annulus
- turbine tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/10—Influencing flow of fluids around bodies of solid material
- F15D1/12—Influencing flow of fluids around bodies of solid material by influencing the boundary layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/002—Influencing flow of fluids by influencing the boundary layer
- F15D1/0025—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply
- F15D1/0055—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising apertures in the surface, through which fluid is withdrawn from or injected into the flow
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a protecting device for a wind turbine tower. The protecting device comprises an upper circular ring, a lower circular ring and a cylindrical surface. The cylindrical surface is arranged between the upper circular ring and the lower circular ring. A hollow cylinder arranged outside the wind turbine tower is defined by the cylindrical surface, the upper circular ring and the lower circular ring. A plurality of round holes, which are symmetrical relative to the central axis of the wind turbine tower, are uniformly formed in each of the upper circular ring, the lower circular ring and the cylindrical surface. According to the principle of generating small-scale turbulence when wind passes through a porous structure, a flow field at the bottom of the wind turbine tower is enabled to generate a disturbance, so as to inhibit the generation of a Karman vortex street and achieve the purpose of enhancing the safety and the stability of a wind turbine. The protecting device is simple in structure, convenient to implement, and reduced in cost.
Description
Technical field
The present invention relates to wind power generation field, relate in particular to a kind of windmill tower frame protective device.
Background technology
Along with producing and growth in the living standard, people are increasing to the demand of the energy, the non-renewable resources such as coal and oil can not meet people's demand, and China Wind Power aboundresources, therefore greatly develop wind-power electricity generation to readjusting the energy structure, ensure energy security, reply climate change and promoting that Sustainable Socioeconomic Development is significant, wherein wind energy conversion system plays effect of crucial importance as the key equipment of wind-power electricity generation for China's Wind Power Development. Wind-driven generator tower frame is the supporting member of wind power generating set, and it supports impeller to certain altitude, orders about wheel rotation to obtain enough large wind speed, and wind energy is converted to electric energy.
But pylon itself highly has certain altitude, and be load-supporting part, be one of emphasis of building the required consideration of wind power plant so improve its security performance and stability always.
In existing patent, note improving its stability by the structure of change pylon. As patent " a kind of string pendulum formula wind-driven generator vibration absorber " (patent No.: 201120448266.x), it,, by the connection string pendulum contrary with the direction of motion of the direction of motion and structure, plays the effect of power weakening; " covering type wind-driven generator tower frame " (patent No.: 201320355592.x), it takes interior tower tower body skeleton to make structure more stable with the mode that outer tower stressed-skin construction combines.
But change pylon structure can change the intensity of pylon, so pylon miscellaneous part also will make corresponding change, cost is increased. Directly can be convenient at the outside increase of pylon protector, reduce costs simultaneously.
When permanent incoming flow is under certain condition walked around some object, object both sides can periodically come off direction of rotation on the contrary and be arranged in well-regulated biserial line vortex. When beginning, this two alignments whirlpool keeps respectively the motion of self to advance, and then they interfere with each other, and attracts each other, and disturbs increasingly, forms nonlinear so-called vortex street, and it is of common occurrence that the wind causing due to Karman vortex street is ruined accident. For the particularly pylon of large scale wind power machine of wind energy conversion system, when wind streams pylon, alternately coming off of Karman vortex street easily causes the sharp resonance in whirlpool (tower oscillation and vortex granting are resonated), thereby pylon is caused damage.
Summary of the invention
Technical problem to be solved by this invention is for defect involved in background technology, and a kind of windmill tower frame protective device is provided.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of windmill tower frame protective device, comprises annulus, lower annulus and cylinder;
Described cylinder is arranged between annulus, lower annulus, and upper annulus, lower annulus composition are included in the hollow cylinder outside windmill tower frame;
On described upper annulus, lower annulus, cylinder, be all evenly provided with some circular holes about windmill tower frame axis symmetry.
As the further prioritization scheme of windmill tower frame protective device of the present invention, the circular hole on described cylinder is row shape to be arranged, and every row circular hole spacing equates.
Concrete circular hole quantity and the large I of Circularhole diameter are adjusted according to size and the local wind speed of wind energy conversion system.
Windmill tower frame protective device is wrapped in whole pylon skin; so when pylon is dirty distinguished and admirable when blowing over pylon; air-flow flows to downstream through the hole of damaged surface; easily produce the turbulent flow of small scale in downstream; thereby upset the dirty flow field of pylon; make Karman vortex street be difficult for producing, thereby the wind that reduces Karman vortex street is ruined accident rate.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1. porous cylindrical body structure not only can weaken Karman vortex street, and this structure itself just has stability simultaneously, and therefore the protective layer of porous cylindrical body structure is firmer with respect to other structures;
2. the structure that increases protective layer outward and do not change pylon itself at pylon, therefore the other technologies parameter of wind-driven generator need not change, and this structure than direct change pylon is easier, cost-saving;
3. also can add such protective device outward at now built wind-driven generator tower frame, applicability is stronger.
Brief description of the drawings
Schematic diagram when Fig. 1 is wind-driven generator work;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the schematic diagram of Karman vortex street.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
Schematic diagram when Fig. 1 is wind-driven generator work. As shown in the figure, when wind-driven generator work, the flow path direction that comes of natural wind is indefinite.
In the time that pylon is crossed in wind, pylon both sides can periodically come off, and direction of rotation is contrary, the biserial line vortex of queueing discipline, forms Karman vortex street, as shown in Figure 3 after nonlinear interaction. And the alternately granting in whirlpool after Karman vortex street can produce the alternation side force perpendicular to flow direction on pylon, force pylon to vibrate, affect the stability of pylon. And pylon is the load-bearing connecting portion of whole wind power generation plant, so this vibration is extremely harmful.
As shown in Figure 2, the invention discloses a kind of windmill tower frame protective device, comprise annulus, lower annulus and cylinder; Cylinder is arranged between annulus, lower annulus, and upper annulus, lower annulus composition are included in the hollow cylinder outside windmill tower frame; On upper annulus, lower annulus, cylinder, be all evenly provided with some circular holes about windmill tower frame axis symmetry.
Circular hole on cylinder is row shape to be arranged, and every row circular hole spacing equates.
This destroyed the flow field in relative incoming flow downstream, make Karman vortex street be difficult for form.
And in pylon outer wrap after windmill tower frame protective device; in the time that pylon is crossed in wind; no matter incoming flow wind blows to the shield segment of windmill tower frame protective device from which angle; air-flow all can flow into windmill tower frame protective device by the circular hole on windmill tower frame protective device surface, and flows out windmill tower frame protective device from other circular holes of windmill tower frame protective device. Due to the aperture in windmill tower frame protective device; can produce in pylon bottom the turbulent flow of small scale; the turbulent flow of this small scale can make the flow field in pylon downstream produce disturbance, thereby makes Karman vortex street be difficult for forming, and has also just strengthened security and the stability of whole device.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have with the present invention under the identical meaning of the general understanding of those of ordinary skill in field. Should also be understood that such as those terms that define in general dictionary and should be understood to have the meaning consistent with meaning in the context of prior art, unless and definition as here, can not explain by idealized or too formal implication.
Above-described detailed description of the invention; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. a windmill tower frame protective device, is characterized in that, comprises annulus, lower annulus and cylinder;
Described cylinder is arranged between annulus, lower annulus, and upper annulus, lower annulus composition are included in the hollow cylinder outside windmill tower frame;
On described upper annulus, lower annulus, cylinder, be all evenly provided with some circular holes about windmill tower frame axis symmetry.
2. windmill tower frame protective device according to claim 1, is characterized in that, the circular hole on described cylinder is row shape to be arranged, and every row circular hole spacing equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052379.XA CN105587471A (en) | 2016-01-26 | 2016-01-26 | Protecting device for wind turbine tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052379.XA CN105587471A (en) | 2016-01-26 | 2016-01-26 | Protecting device for wind turbine tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105587471A true CN105587471A (en) | 2016-05-18 |
Family
ID=55927308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610052379.XA Pending CN105587471A (en) | 2016-01-26 | 2016-01-26 | Protecting device for wind turbine tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105587471A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740752A (en) * | 2017-11-21 | 2018-02-27 | 北京金风科创风电设备有限公司 | Surround apparatus and method for suppressing vibration of building envelope |
| WO2019047484A1 (en) * | 2017-09-11 | 2019-03-14 | 北京金风科创风电设备有限公司 | Exterior-enclosed construction having function of suppressing vortex-induced vibration, and method for suppressing vortex-induced vibration |
| WO2019047483A1 (en) * | 2017-09-11 | 2019-03-14 | 北京金风科创风电设备有限公司 | Method and apparatus for suppressing vibration of exterior-protected construction, and method for hoisting tower barrel |
| CN113502741A (en) * | 2021-06-15 | 2021-10-15 | 哈尔滨工业大学 | Structure for inhibiting vortex-induced vibration of cylindrical structure |
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| KR20110115288A (en) * | 2010-04-15 | 2011-10-21 | 엘에스전선 주식회사 | Bearing apparatus for wind tower |
| CN102345272A (en) * | 2011-07-15 | 2012-02-08 | 上海大学 | Cable-stayed bridge stay rope capable of resisting aerodynamic instability |
| CN202483805U (en) * | 2011-12-30 | 2012-10-10 | 江苏道达海洋装备技术有限公司 | Marine wind generation wind vibration preventing device |
| CN202689230U (en) * | 2012-06-11 | 2013-01-23 | 同济大学建筑设计研究院(集团)有限公司 | Ring type shock absorber for wind power tower |
| CN105020106A (en) * | 2015-08-14 | 2015-11-04 | 厦门大学 | Wind turbine low frequency aerodynamic noise suppression device based on rotatable fairing |
| CN205400999U (en) * | 2016-01-26 | 2016-07-27 | 南京航空航天大学 | Wind energy conversion system pylon protection device |
-
2016
- 2016-01-26 CN CN201610052379.XA patent/CN105587471A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110115288A (en) * | 2010-04-15 | 2011-10-21 | 엘에스전선 주식회사 | Bearing apparatus for wind tower |
| CN102345272A (en) * | 2011-07-15 | 2012-02-08 | 上海大学 | Cable-stayed bridge stay rope capable of resisting aerodynamic instability |
| CN202483805U (en) * | 2011-12-30 | 2012-10-10 | 江苏道达海洋装备技术有限公司 | Marine wind generation wind vibration preventing device |
| CN202689230U (en) * | 2012-06-11 | 2013-01-23 | 同济大学建筑设计研究院(集团)有限公司 | Ring type shock absorber for wind power tower |
| CN105020106A (en) * | 2015-08-14 | 2015-11-04 | 厦门大学 | Wind turbine low frequency aerodynamic noise suppression device based on rotatable fairing |
| CN205400999U (en) * | 2016-01-26 | 2016-07-27 | 南京航空航天大学 | Wind energy conversion system pylon protection device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019047484A1 (en) * | 2017-09-11 | 2019-03-14 | 北京金风科创风电设备有限公司 | Exterior-enclosed construction having function of suppressing vortex-induced vibration, and method for suppressing vortex-induced vibration |
| WO2019047483A1 (en) * | 2017-09-11 | 2019-03-14 | 北京金风科创风电设备有限公司 | Method and apparatus for suppressing vibration of exterior-protected construction, and method for hoisting tower barrel |
| EP3480454A4 (en) * | 2017-09-11 | 2019-05-08 | Beijing Goldwind Science & Creation Windpower Equipment Co. Ltd. | Exterior-enclosed construction having function of suppressing vortex-induced vibration, and method for suppressing vortex-induced vibration |
| US11506180B2 (en) | 2017-09-11 | 2022-11-22 | Beijing Goldwind Science & Creation Windpower Equipment Co.. Ltd. | Enclosure with vortex-induced vibration suppression function and method for suppressing vortex-induced vibration |
| CN107740752A (en) * | 2017-11-21 | 2018-02-27 | 北京金风科创风电设备有限公司 | Surround apparatus and method for suppressing vibration of building envelope |
| CN113502741A (en) * | 2021-06-15 | 2021-10-15 | 哈尔滨工业大学 | Structure for inhibiting vortex-induced vibration of cylindrical structure |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160518 |