CN209228541U - Reduce the structure of blower fan tower barrel vortex-induced vibration - Google Patents
Reduce the structure of blower fan tower barrel vortex-induced vibration Download PDFInfo
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- CN209228541U CN209228541U CN201822103626.1U CN201822103626U CN209228541U CN 209228541 U CN209228541 U CN 209228541U CN 201822103626 U CN201822103626 U CN 201822103626U CN 209228541 U CN209228541 U CN 209228541U
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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 kind of structure for reducing blower fan tower barrel vortex-induced vibration, which can be tower top single hop, and around a snare barrel structure, tube-in-tube structure includes the tail portion for reducing vortex-induced vibration for periphery in whole or in part；Tube-in-tube structure is set as flexible sleeve structure, and Bao Rao is set as rigid sleeve structure in tower top periphery or tube-in-tube structure and Bao Rao is in tower top periphery.In addition, the structure can also be the spiral pipeline structure for being wrapped in tower top periphery, upwind is equipped with collection air port, and lower wind direction lets out air port along the setting of spiral pipeline, collection air port be set as it is distinguished and admirable enter spiral pipeline entrance, let out air port be set as it is distinguished and admirable go out spiral pipeline outlet.Mechanism of production and feature of the utility model according to whirlpool vibration, change barrel Flow Field Distribution, then influence barrel surface vortex shedding to avoid or mitigate vortex-induced vibration, to reduce the tower vibration under Action of Wind pressure and avoiding covibration.
Description
Technical field
The utility model relates to wind power generation field, in particular to a kind of structure for reducing blower fan tower barrel vortex-induced vibration.
Background technique
Air quality problems become the major issue concerning environment and human health in recent years, as clean reproducible energy
Wind energy, also serve human being's production and life more and more.There are many types, predominantly trunnion axis three for wind power generation plant
Turbo dynamo, this kind of electrical power generators power and impeller diameter size positive correlation, therefore as generated output increases
Impeller diameter increases, and the bigger wind-force of height is bigger in addition, and wind energy conversion system height is constantly promoted.As shown in Figure 1, wind-driven generator is main
It is made of blade, wheel hub, cabin, tower, transition portion and lower support structure.Tower carries to be provided effectively for top structure
The effect of support.MW grades of wind energy conversion system towers often tens rice up to a hundred, by manufacture, transport, the various aspects such as Lifting Capacity are limited tower
General sectional construction installation, single long length 20-30m or so, such as 01 section shown in FIG. 1,02 section and 03 section, 01 section of tower here
Cylinder refers to that top single hop or entire tower upper section are no more than 1/2 tower height component.
Elongated tower is acted on by wind flow field, and fluid is stopped to continue to flow around tower by tower, and flow field is dry by tower at this time
It disturbs and changes, influenced to have difference when fluid leaves component by component scale, shape, wind speed, roughness, air viscosity etc.,
It will form cyclical disequilibrium Action of Wind pressure under certain condition, vibrated so as to cause blower, is i.e. the vortex-induced vibration of blower.When
When the period of uneven wind pressure and close certain whole rank natural period of blower (the usually first natural frequency of blower), blower
Vortex-induced vibration can significantly increase.The generation of vortex-induced vibration has an adverse effect the reliability to fan operation, safety.With
The increase of blower fan pylon height, vortex-induced vibration have become inevitable urgent problem to be solved in industry.
The mechanism of action and feature of whirlpool vibration are as follows:
(1) when distinguished and admirable through tower, asymmetric Vortex Shedding can be generated in the two sides of structure, makes body structure surface by week
The frequency of phase property positive/negative pressure, the resultant force suffered by certain wind speed flowering structure is consistent with the natural frequency of vibration of structure, and structure occurs at this time
Vortex-induced vibration.
(2) vortex-induced vibration is a kind of simple harmonic oscillation, and vibration mode is usually expressed as beam wind to vibration or twisting vibration.Knot
When structure amplitude is larger, the movement of structure generates feedback effect to the form of streaming of gas, makes vortex shedding frequencies in certain wind speed
It is equal with Structural Natural Vibration frequency in enclosing, i.e. " locking " phenomenon of Vortex-excited vibration." locking " will increase structure hair vortex-induced vibration
Probability, enhance three-dimensional structure on whirlpool swash power correlation.Vortex-induced vibration is a kind of clipping vibration, to the quality and resistance of structure
Buddhist nun is more sensitive, and when architecture quality and smaller damping, Vortex-excited vibration amplitude may be very big.In lock room, whirlpool takes off frequency
Strouhal relational expression is no longer obeyed, and is held at structural natural frequencies value.In lock room, object amplitude can reach structure
Part of the beam wind to size.
(3) cylinder vortex-induced vibration and Re relationship；
Reynolds number Re indicates relationship between inertia force and viscous force: Re=inertia force/viscous force=(ρ * U2/L)/(μ*U/
L2)=ρ * U*L/ μ=U*L/ ν, in formula, ρ: atmospheric density；U wind speed；L structure feature scale；μ air viscosity；ν air movement is viscous
Property coefficient=1.5*10-5m2/s；
When Re < 5: flowing does not separate；When 5~15 < Re < 40: there is a pair of stable vortex in wake flow；When 40 < Re < 3.0 ×
102: vortex regularly alternately falls off from rear cylindrical, forms Karman vortex street；When 3.0 × 102<Re<3.0×105: subcritical model
Spinning whirlpool is fallen off with a specific frequency periodicity；When 3.0 × 105<Re<3.5×105: it is turbulent in critical range vortex
It is covered, whirlpool takes off disorderly and unsystematic；When 3.5 × 105< Re: re-establishing in subcritical range whirlpool, and whirlpool is de- to reappear periodicity.
So streaming form difference in the case of different Reynolds number, thus the frequency of its Vortex Shedding and act on pneumatic in structure
Power is also different.
(4) whirlpool vibration Production conditions: St=fv*D/U；In formula, St: Si Tuoluoha number；U: wind and tower relative velocity；fv: whirlpool
De- frequency；D: tower diameter.
(5) wind friction velocity: U=f is lockedv*D/St。
(6) whirlpool exciting feature: being a, a kind of finite amplitude vibration that certain wind speed area occurs；B, only in a certain wind speed region
Interior generation；C, peak swing has very big dependence to structural damping；D, the minor change of section configuration is very sensitive to responding；E, whirlpool
Excited vibration can evoke bending vibration, can also be with exciting twisting vibration.
Vortex-induced vibration is as structural vibration phenomenon caused by a kind of periodical dynamic loading, to blower fan tower barrel pad
Fatigue will have an adverse effect.In addition, the state that can not be executed in the blower fan control systems such as assembling or shutdown control strategy
Under, the structure to blower is generated safely very detrimental effect by the generation of blower vortex-induced vibration.
Utility model content
The purpose of the utility model is to provide a kind of structures for reducing blower fan tower barrel vortex-induced vibration, according to whirlpool vibration mechanism of production
And feature, change barrel Flow Field Distribution, influences barrel surface vortex shedding then to avoid or mitigate vortex-induced vibration, make to reduce wind pressure
Covibration is vibrated and avoided to tower under.
In order to achieve the above object, a kind of spiral pipeline structure for reducing blower fan tower barrel vortex-induced vibration of the utility model, should
Spiral pipeline structure is wrapped in tower top periphery, and upwind is equipped with collection air port, and lower wind direction lets out air port along the setting of spiral pipeline, institute
State collection air port be set as it is distinguished and admirable enter spiral pipeline entrance, it is described let out air port be set as it is distinguished and admirable go out spiral pipeline outlet.
Preferably, in the spiral pipeline structure, winding pipe diameter range is 50mm to 300mm.
Preferably, in the spiral pipeline structure, lead is sized to 4.5 times to 5 times of tower diameter.
Preferably, in the spiral pipeline structure, pitch dimension is set as the one third of lead size, so that the lead
Three winding pipe of juxtaposition in size range.
Preferably, the winding bottom of the tube is equipped with the support sliding slot for limiting winding pipe displacement.
Preferably, collection air port is stated in the air port of letting out less than described in.
Preferably, bell mouth shape is in the air port that integrates.
Preferably, the collection air port is separately installed, or one is made with the winding pipe.
Preferably, the air holes of letting out directly is provided with the collection air port back side no more than within the scope of 120 degree, alternatively, described let out
Lower wall is arranged on winding pipe in air holes.
Preferably, the diameter for letting out air holes is less than the diameter of winding pipe, which, which is not less than, lets out air holes
Diameter, it is each to let out the equal in magnitude or unequal of air holes.
Compared with prior art, the utility model has the following beneficial effects: (1) the utility model passes through to tower top single hop
Periphery has certain tail shape, can improve tail portion flow field, to reduce whirlpool around a snare cylinder, the sleeve in whole or in part
Vibration.The design of sleeve upper and lower side has specific type of attachment, and sleeve can be made free to slide, and can be made according to wing theory in wind-force
With lower automatic deflecting, meets and carry out wind.(2) the utility model sleeve can be used as flexible bag around since fluid viscosity effect should not mistake
Long, under the action of the wind windward to automatic attaching tower, lee-ward is detached from tower surface and generates the shape similar to aerofoil profile, keeps away
Tight back area of low pressure is opened, back flow field is improved, to reduce whirlpool vibration.(3) the utility model twines tower top single hop periphery
Around spiral pipeline, upwind is equipped with collection air port, and lower wind direction is let out air port along pipeline setting, to upset the wake flow of wind direction under tower, reached
To reduction whirlpool vibration purpose.
Detailed description of the invention
The tower and wind energy conversion system overall schematic of Fig. 1 prior art；
The tower top section tube-in-tube structure schematic diagram of Fig. 2 the utility model embodiment one；
The tower top section sleeve connection schematic diagram of Fig. 3 the utility model embodiment one；
The top connection schematic diagram of the tower top section sleeve of Fig. 4 the utility model embodiment one；
The lower part connection schematic diagram of the tower top section sleeve of Fig. 5 the utility model embodiment one；
Upwind schematic diagram in the pipeline structure of Fig. 6 the utility model embodiment two；
Side schematic view in the pipeline structure of Fig. 7 the utility model embodiment two；
The corresponding A of Fig. 7 a the utility model Fig. 7 partially laterally view；
Lower wind direction schematic diagram in the pipeline structure of Fig. 8 the utility model embodiment two；
The local positive direction view of the corresponding B of Fig. 8 a the utility model reality Fig. 8；
The screw pitch and lead schematic diagram of Fig. 9 the utility model embodiment two.
Specific embodiment
The utility model discloses a kind of structures for reducing blower fan tower barrel vortex-induced vibration, in order to keep this practical new more obvious
It is understandable, the utility model is described further below in conjunction with the drawings and specific embodiments.
Embodiment one:
As shown in Fig. 2, the construction design method of the reduction blower fan tower barrel vortex-induced vibration of the utility model is in tower top
Periphery has certain tail shape, can improve tail portion flow field single hop around a snare cylinder 205, the sleeve 205 in whole or in part,
To reduce whirlpool vibration.The design of sleeve upper and lower side has specific type of attachment, sleeve can be made free to slide, and can be managed according to wing
By automatic deflecting under the action of the wind, meets and carry out wind.
Sleeve can be used as flexible bag around (having certain suppleness material similar to heavy kraft paper etc.), since fluid viscosity is made
With unsuitable too long, under the action of the wind windward to automatic attaching tower, lee-ward is detached from tower surface and generates similar aerofoil profile
Shape, avoid tight back area of low pressure, improve back flow field, to reduce whirlpool vibration.
In the present embodiment, flexible bag winding layer perimeter is greater than it and corresponds to wrapping position tower perimeter, and after any extrusion shapes
Its maximum longitudinal extent should be less than (1+D) m to guarantee not generate interference with impeller in its any situation, and wherein D is tower
Maximum gauge.Wrapping layer is the material with specific compliance toughness, and upper and lower side can be directly solid by pushing up the upper lower flange of section tower
It is fixed.
Rigid sleeve form is as shown in Fig. 2, sleeve surrounds the periphery of tower top section.Upwind end is annular in shape, pastes as far as possible
Closely without contacting tower barrel, suitable spacing distance is determined according to conditions such as construction precision and material stiffnesses.Lower wind direction end is set
There are certain aerofoil profile or the processing of direct prism.The sleeve in the height direction, arbitrary section show as aerofoil profile section shape or
Circumference is combined with triangle.
Sleeve in the circumferential maximal projection length should ensure that not with blade generate interference and there are certain safe distances.It is maximum
Sleeve can integrally wrap also sectional wrapping.The upper and lower side of rigid sleeve is fixed using certain structure, which can guarantee
Rigid sleeve can be freely rotated with automatic alignment wind direction under Action of Wind pressure.
(1) sleeve ends connection type one, specific as follows:
In the present embodiment, form fixes sleeve upper and lower side as shown in Figure 3 can be used.
As shown in Fig. 2 and Fig. 3 combination, 201 be tower drum outer wall, and 202 be tower connection and sponson, and 203 be connector
Track portion, 205 be sleeve, and 206 be sleeve ends linkage section.
Connector track portion 203 belongs to tower sponson, passes through tower connection and sponson 202 and tower drum outer wall
201 fastenings.203 shape of connector track portion can be spherical shape, can also be other shapes protrusion.
In the present embodiment, tower connection and sponson 202 and connector track portion 203 connect around tower formation in one week
Continuous track guarantees that sleeve 205 can be free to slide by rail structure under Action of Wind pressure.Specifically, tower connection and it is overhanging
Part 202 and connector track portion 203 collectively form sliding rail, and the two is by being welded to connect or may be produced that integrally casting part.
The sliding rail is connected by tower and sponson 202 is welded with tower drum outer wall 201, passes through 203 outer surface of connector track portion
Slideway is formed with sleeve ends linkage section 206.Sliding rail is only arranged at the top of sleeve and bottom, the structure type phase of top and bottom
Together, sled position is as shown in the P point in Fig. 2.
Sleeve ends linkage section 206 can be continuous as sleeve connector, only circumferentially can also relatively evenly arrange several
Block plays the role of effectively connecting and 205 weight of stop sleeve.
Sleeve is the contact of connector track portion 203 and sleeve ends linkage section 206 with tower junction part 204
Face, the sleeve and tower junction part 204 are set as smooth contact, guarantee both sleeve and tower smooth contact.At this point, right
It rubs between adding lubrication to reduce contact surface at contact surface, ensures sleeve 205 by sleeve ends linkage section 206 (i.e. connector) along cunning
The smooth sliding in road, guarantee sleeve 205 under the action of the wind can upwind (rounded portions) windward, lower wind direction (pointed part) back
Wind is located at wake zone.In addition, sleeve and tower junction part 204 can also make magnetic connection, it contact the two need not, pass through magnetic pole
Repellence rubs between reducing contact surface, i.e., guarantees the free to slide of sliding rail using gravity and magnetic field repulsive force and be reliably connected.
In the present embodiment, should reducing friction resistance and the abrasion to material as far as possible, certain material, processing work can be passed through
Improvement is continued to optimize in skill, structure optimization etc..
(2) sleeve ends connection type two:
The sliding rail of the utility model can do magnetic track, be preferably minimized sliding rail friction.As shown in Figure 4 and Figure 5, this is
Another sliding rail design method, for the connection of sleeve and tower, but the utility model is not limited to this cross section structure form.
Top junction as shown in Figure 4,211 be sleeve；210 be sleeve top end part, the structure for cooperating with sliding rail；
212 be sliding rail, and one end is connect with tower, and the other end is track of sliding track, and bottom passes through reinforcer 215 (band iron) support reinforcing；213
For tower drum outer wall.
Three surfaces that the orbital groove of sliding rail 212 and sleeve top end part 210 cooperate are made into magnetic force face, i.e. sleeve top end part
210 inside and outside two surfaces contacted with sliding rail 212 and lower end surface are set as magnetic force face, and circumferentially continuous one week along tower.
Sleeve bottom end portion 209 is identical as 210 structure of sleeve top end part.Similarly, the orbital groove and sleeve bottom end of sliding rail 214
Three surfaces that portion 209 cooperates are made into magnetic force face, i.e., inside and outside two surfaces that are contacted with sliding rail 214 of sleeve bottom end portion 209 and on
End surface is set as magnetic force face.Three magnetic force faces of the sleeve bottom in the present embodiment and three magnetic force faces composition three at the top of sleeve
To magnetic force repulsion face, then three groups of repulsion as shown in Figure 4 and Figure 5 are formed after two sets of guide rails and the cooperation of sleeve upper and lower end face up and down:
Power 1 and power 1 ', power 2 and power 2 ', power 3 and power 3 '.
Wherein, the repulsion of power 1 and the composition of power 1 ' contrary a pair of of horizontal direction balance equal in magnitude；Power 2 and power 2 '
Form contrary a pair of of horizontal direction balance repulsion equal in magnitude.Since the nearlyr repulsion of relative distance is bigger between magnet, when
When 1 repulsion interplanar distance of power reduces, repulsion can be such that its distance increases, and when 1 ' repulsion interplanar distance of power reduces likewise, power 1 ' connects
The repulsion of contacting surface can act on bigger repulsion again increases its distance, and being finally reached 210 two sides of sleeve top end part away from sliding rail has one
The position of relative equilibrium, and remain gap, it avoids rubbing.
Power 3 and power 3 ' are vertical direction a pair of balance repulsion, but since gravity is greater than magneticaction, one where power 3
Contact surface is generally required specially treated, increasing lubrication, polishing fillet or increasing by 3 surface repulsion of power if having ready conditions makes
Its size can balancing gravity and 3 ' face of power the sum of two power, keep entire sliding rail under the action of the wind can be without frictionally relatively sliding
It is dynamic.
As shown in Figure 3 and Figure 4,215,216 be respectively upper and lower track structure support reinforcing component, can circumferentially be connected along tower
Continuous one circle of welding can be discontinuously uniformly distributed along tower periphery.
In conclusion in the above two kind sleeve ends type of attachment (i.e. Fig. 3 and Fig. 4,5 shown in) of the present embodiment one,
Track be set as along one week ring structure of tower (the first form pass through tower connection and sponson 202 realize；Second
In form, top by sliding rail 212 and upper rail 215 one end of structural support stiffener realize, bottom by track 214, under
Realize 216 one end of track structure support reinforcing component) it can be directly welded to connect with tower or using tower taper itself in sleeve
It is tightly sleeved under Gravitative Loads, or local spot welding connection；Can also re-optimization contact position structure be attached.
Embodiment two:
Shown in combining such as Fig. 6, Fig. 7 and Fig. 8, in the present embodiment two, to tower top single hop periphery winding screw pipeline, on
Wind direction is equipped with collection air port, and lower wind direction lets out air port along pipeline setting, to upset the wake flow of wind direction under tower, reaches and reduces whirlpool vibration mesh
's.
Wherein, collection air port be it is distinguished and admirable enter spiral pipeline entrance, should have big opening form convenient for more gases flow into spiral shell
In coil.The outlet that air port is distinguished and admirable spiral pipeline out is let out, should be small compared with collection air port, so that air-flow has compared with the bigger flow velocity punching of wake flow
Helix tube out.
A kind of above-mentioned application for Bernoulli equation, then according to Bernoulli equation:
In formula, p is certain point pressure in fluid；V is the fluid-flow rate；ρ is fluid density；G is acceleration of gravity；
Z is height where the point；C is a constant.
Based on above-mentioned and by taking bottommost a pair of entrance as an example and assume that entrance on outlet, can obtain:
In formula, νinSpeed for fluid in entrance somewhere；pinFor pressure at fluid inlet；ρ is fluid density；G is gravity
Acceleration；zinThe height where inlet；νoutSpeed for fluid in outlet somewhere；poutFor pressure at fluid inlet；zoutOut
Mouth place is in height.
Due to wind have viscosity, when being flowed along barrel tower surface formed a boundary layer, and with become a mandarin into it is certain
Boundary layer separation causes the viscous whirlpool at turbulent flow and the tower back side at angular position, therefore the leeward surface pressure of tower reduces rapidly, i.e. pin
> pout.And flowed up for fluid the current situation can increase kinetic energy deficiency, therefore it is more windy will be easier to flow downwards,
Therefore upper-part centralized air port and lower part are closed on to let out air port and regard a pair of of entrance as and has Zin> Zout, therefore vout>vinGo out gas speed
Degree more greatly can disturb wake flow, destroy original flow field.
The specific design method of the present embodiment two is as follows:
It chooses in the winding section pipe diameter 50-300mm of spiral pipeline.
As shown in figure 9, lead hw size is about 4.5 to 5 times of tower diameter, lead hw size in spiral pipeline
In range can three winding pipe of juxtaposition, then screw pitch lw be lead hw one third.
In the present embodiment two, it lightweight material can be used to reduce gravity, have small spacing that can also take centainly between tube wall and barrel
Mode does Wear-resistant Treatment.It can be connected with nacelle atop with wheel rotation and rotate at the top of winding pipe, so that collection air port is always
In upwind, let out air port it is at a disadvantage to.The settable support sliding slot of bottom of the tube is wound, its displacement is limited.
Collection air port is mainly characterized in that bell mouth shape, and loudspeaker opening is gradually reduced to junction greatly, the horn mouth concrete form
Can be a variety of, (Fig. 7 a show one of which).Settable more effective wind-drive device, such as impeller in horn mouth make to inject wind more
Effectively flow into winding pipe.In addition, collection air port can be individually attached, can also be made of one with winding pipe.
As shown in Figure 8 a, letting out air holes can directly open within the scope of the collection air port back side is no more than 120 degree, and it is small to let out air holes diameter
In winding pipe diameter, air holes pitch-row is let out not less than letting out air holes bore dia distance.Letting out air holes number should not be excessive, size can it is equal or
Person need not be equal, lower wall setting can also let out air holes on winding pipe.
It is discussed in detail although the content of the utility model has passed through above preferred embodiment, but it should be appreciated that on
The description stated is not considered as limitations of the present invention.After those skilled in the art have read above content, for
A variety of modifications and substitutions of the utility model all will be apparent.Therefore, the protection scope of the utility model should be by appended
Claim limit.
Claims (10)
1. a kind of spiral pipeline structure for reducing blower fan tower barrel vortex-induced vibration, which is characterized in that the spiral pipeline structure is wrapped in
Tower top periphery, upwind are equipped with collection air port, and lower wind direction lets out air port along spiral pipeline setting, and the collection air port is set as
It is distinguished and admirable enter the spiral pipeline entrance, it is described let out air port be set as it is distinguished and admirable go out the spiral pipeline outlet.
2. a kind of spiral pipeline structure for reducing blower fan tower barrel vortex-induced vibration as described in claim 1, which is characterized in that
In the spiral pipeline structure, winding pipe diameter range is 50mm to 300mm.
3. a kind of spiral pipeline structure for reducing blower fan tower barrel vortex-induced vibration as claimed in claim 1 or 2, which is characterized in that
In the spiral pipeline structure, lead (hw) is sized to 4.5 times to 5 times of tower diameter.
4. a kind of spiral pipeline structure for reducing blower fan tower barrel vortex-induced vibration as claimed in claim 3, which is characterized in that
In the spiral pipeline structure, screw pitch (lw) is sized to the one third of lead (hw) size, so that the lead
(hw) three winding pipe of juxtaposition in size range.
5. a kind of spiral pipeline structure for reducing blower fan tower barrel vortex-induced vibration as claimed in claim 2, which is characterized in that
The winding bottom of the tube is equipped with the support sliding slot for limiting winding pipe displacement.
6. a kind of spiral pipeline structure for reducing blower fan tower barrel vortex-induced vibration as described in claim 1, which is characterized in that
Collection air port is stated less than described in the air port of letting out.
7. a kind of spiral pipeline structure for reducing blower fan tower barrel vortex-induced vibration as described in claim 1 or 6, which is characterized in that
Bell mouth shape is in the air port that integrates.
8. a kind of spiral pipeline structure for reducing blower fan tower barrel vortex-induced vibration as claimed in claim 2, which is characterized in that
The collection air port is separately installed, or one is made with the winding pipe.
9. a kind of spiral pipeline structure for reducing blower fan tower barrel vortex-induced vibration as claimed in claim 2, which is characterized in that
The air port of letting out directly is provided within collection air port back side setting range, alternatively, the air port of letting out is arranged on winding pipe
Lower wall.
10. a kind of spiral pipeline structure of reduction blower fan tower barrel vortex-induced vibration as described in claim 2 or 9, which is characterized in that
The diameter for letting out air port is less than the diameter of the winding pipe, which lets out the straight of air port not less than described
Diameter, it is each described to let out the equal in magnitude or unequal of air port.
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| CN201822103626.1U CN209228541U (en) | 2018-12-14 | 2018-12-14 | Reduce the structure of blower fan tower barrel vortex-induced vibration |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735767A (en) * | 2019-09-18 | 2020-01-31 | 浙江运达风电股份有限公司 | flexible tower wind-induced vibration flow disturbing device of retractable wind generating set |
| CN113074086A (en) * | 2020-01-06 | 2021-07-06 | 周英 | Induced air type power generation device and method |
| CN113819009A (en) * | 2021-09-28 | 2021-12-21 | 中国华能集团清洁能源技术研究院有限公司 | Passive turbulence device, wind turbine generator and passive turbulence method |
| CN114033634A (en) * | 2021-11-22 | 2022-02-11 | 南通河海大学海洋与近海工程研究院 | Device for inhibiting vortex-induced resonance of wind turbine |
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2018
- 2018-12-14 CN CN201822103626.1U patent/CN209228541U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735767A (en) * | 2019-09-18 | 2020-01-31 | 浙江运达风电股份有限公司 | flexible tower wind-induced vibration flow disturbing device of retractable wind generating set |
| CN113074086A (en) * | 2020-01-06 | 2021-07-06 | 周英 | Induced air type power generation device and method |
| CN113819009A (en) * | 2021-09-28 | 2021-12-21 | 中国华能集团清洁能源技术研究院有限公司 | Passive turbulence device, wind turbine generator and passive turbulence method |
| CN113819009B (en) * | 2021-09-28 | 2023-03-07 | 中国华能集团清洁能源技术研究院有限公司 | Passive flow disturbing method |
| CN114033634A (en) * | 2021-11-22 | 2022-02-11 | 南通河海大学海洋与近海工程研究院 | Device for inhibiting vortex-induced resonance of wind turbine |
| CN114033634B (en) * | 2021-11-22 | 2024-04-09 | 南通河海大学海洋与近海工程研究院 | Device for inhibiting vortex-induced resonance of wind turbine |
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Address after: 200241 Dongchuan Road, Shanghai, No. 555, building No. 8, floor, floor, No. Patentee after: Shanghai Electric Wind Power Group Co., Ltd Address before: 200241, 4 floor, building 555, 4 Dongchuan Road, Shanghai, Minhang District Patentee before: Shanghai Electric Wind Power Group Co., Ltd. |
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