CN105736240B - Blower Blade Steel cable attachment device under a kind of mechanical brake state - Google Patents
Blower Blade Steel cable attachment device under a kind of mechanical brake state Download PDFInfo
- Publication number
- CN105736240B CN105736240B CN201610146777.8A CN201610146777A CN105736240B CN 105736240 B CN105736240 B CN 105736240B CN 201610146777 A CN201610146777 A CN 201610146777A CN 105736240 B CN105736240 B CN 105736240B
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- China
- Prior art keywords
- blade
- fan blade
- steel cable
- attachment device
- joint connection
- 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.)
- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 5
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims 2
- 230000035772 mutation Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0204—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
- F03D7/0208—Orientating out of wind
- F03D7/0212—Orientating out of wind the rotating axis remaining horizontal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0244—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to blower Blade Steel cable attachment devices under a kind of mechanical brake state, it is therefore intended that improves the reliability of mechanical braking system and the intensity of fan blade under the bad weather conditions such as typhoon.The present invention makes full use of blower mechanical braking system, and steel cable connecting device for air is added on specific two fan blades, the case where successfully managing wind direction mutation, reduce the carrying of mechanical braking system, and improve the stress concentration phenomenon of root of fan blade region appearance, reduce the risk factor of wind power equipment damage.For the present invention independently of the manufacturing process of former fan blade, implementation cost is low, does not influence the normal operation of Fan Equipment.
Description
Technical field
The present invention relates to wind power generation fields, and in particular to blower Blade Steel cable connection dress under a kind of mechanical brake state
It sets.
Background technique
The braking system of Wind turbines mainly includes aerodynamic braking and two kinds of mechanical braking.It is marked according to IEC61400-1
Standard, aerodynamic brake are the first brake systems of blower, wind speed round can be down to a lower value, but blower can not be made to stop completely
Vehicle.Mechanical braking is the supplement to aerodynamic brake as the second brake system, can further will on the basis of aerodynamic brake
Wheel speed is reduced to zero, and keeps dead ship condition.
In the bad weathers such as typhoon, controlled by yaw control and feathering, it being capable of high degree reduction fan blade institute
By wind load, but when prevailing wind direction mutation, yaw device and pitch-controlled system are difficult to react rapidly, cause fan blade that can not adjust
To new " feathering " posture, causes to bear huge wind load on fan blade, easily cause the mistake of mechanical braking equipment in cabin
It carries, causes the damage of the equipment such as gear-box, can also result in fractureing for fan blade when serious.
In the recent period, domestic existing research team proposes to solve the Anti-Typhoon New Measure of fan blade, i.e., pacifies between fan blade
It fills several cables, after blade feathering, control force is applied to cable by control system, and act on to fan blade, enhanced with this
Root of blade intensity achievees the purpose that effectively to resist typhoon.Three fan blades are linked together by this measure, can be improved wind
The integral strength of machine blade, but for the more demanding of brake control system, when the mutation of typhoon prevailing wind direction, fan blade exists
Wheel rotation can be driven under wind load effect, if wind load is larger, mechanical braking system institute is loaded to be further amplified, and there is damage
The risk of failure.
Summary of the invention
It is destroyed in the bad weathers such as typhoon it is an object of the invention to reduce fan blade and mechanical braking system
Risk.The present invention makes full use of the mechanical braking system of blower, proposes in one the mechanical braking shape that cost is relatively low, convenient to carry out
Blower Blade Steel cable attachment device under state, for ensureing the safe operation of Fan Equipment.
To achieve the goals above, the present invention adopts the following technical scheme: blower Blade Steel under a kind of mechanical brake state
Cable attachment device is mainly made of two sets of list joint connections and a wirerope.Divide on specific two fan blades
Not An Zhuan two sets of single joint connections, pass through wirerope connection between two sets single joint connections.When typhoon, in wind
Machine blade completes conventional feathering operation, i.e., after aerodynamic brake, further adjusts third root blade by mechanical braking system
With ground level, mechanical braking system keeps on-position later.When wind direction mutation, due to third root fan blade and ground
Level, therefore influence of the change of the wind for the blade is smaller；2 fan blades equipped with single joint connection are changed by wind direction
The influence of change can bear certain wind load, and steel cable connecting device for air can provide adaptive tensioning for this two fan blades at this time
Power improves the intensity of fan blade；Further, since 2 blades equipped with single joint connection are about third root fan blade
Be approximately axial symmetry relationship, therefore stress is in a basic balance, can high degree alleviate mechanical braking system carry excessively high situation, protect
Hinder the safety of fan blade and mechanical braking system.
Of the invention to be further characterized in that, single joint connection is mainly made of upper bush, lower sleeve, and upper bush is in blower
The leaf basin side of blade is installed, and lower sleeve is installed in the blade back side of fan blade.Structure type is simple, and easy to process
And charge and discharge operations.
Of the invention to be further characterized in that, middle section arranges wirerope on the outside of the upper bush of a set of single joint connection
Connector, middle section arranges wirerope connector on the outside of another set of single joint connection lower sleeve.
Of the invention to be further characterized in that, single joint connection uses stainless steel material, and outside spary antirust paint reduces day
It is often used the influence of middle plurosion, guarantees the reliability of attachment device.
Of the invention to be further characterized in that, the upper and lower sleeve of single joint connection passes through spiral shell at edge and rear in front of the blade
It tethers and connects, the reuse rate of device can be improved convenient for handling in connection type.
It is of the invention to be further characterized in that, upper and lower sleeve in front of the blade the bolt hole at edge and trailing edge in Ye Changfang
It is upwards single-row uniformly distributed layout types, makes each connection bolt uniform force in normal work.
Of the invention to be further characterized in that, the profile of attachment device inner surface and the profile of fan blade corresponding region are equidistant,
Distance is 50mm, and rubber layer, rubber layer thickness 50mm, for protecting fan blade to connect therewith are laid on the inside of upper and lower sleeve
The surface of touching, and play the role of friction and increase resistance.
Of the invention to be further characterized in that, all attachment devices are aligned close to blade root side with fan blade width maximum,
Attachment device is long 5% of leaf close to one lateral extent fan blade width maximum of blade tip.When normal work, attachment device will be by
To force component of the wirerope on blade root direction, it can be achieved that the self-locking function of all attachment devices, further enhances all companies
The stability that connection device is connect with blade.
Of the invention to be further characterized in that, effective connection length of the wirerope between each attachment device is that blade maximum cross-section is arrived
Three times of the radical sign of blade root distance.
The beneficial effects of the present invention are: mechanical braking system is made full use of to adjust Leaf orientation, blower when making wind vector
Wind load suffered by blade substantially reduces, and reduces the risk of mechanical braking equipment damage, and improves stress of the blade under wind load effect
Distribution situation improves the integral strength of fan blade.Implementation cost is low, and the equipment being installed in addition with does not influence wind power system variable pitch and feathering
Process.
Detailed description of the invention
Fig. 1 is the schematic diagram of blower Blade Steel cable attachment device under mechanical brake state.
Fig. 2 is the partial schematic diagram of blower Blade Steel cable attachment device under mechanical brake state.
Fig. 3 is the extreme operating mode schematic diagram of blower Blade Steel cable attachment device under mechanical brake state.
Specific embodiment
Below in conjunction with attached drawing and specific implementation case, blower Blade Steel cable under mechanical brake state of the invention is connected
The embodiment of device is described in detail.
As shown in Figure 1, the fan blade steel cable connecting device for air under mechanical brake state is mainly by first single connector connection dress
It sets 1, second single joint connection 3 and wirerope 2 forms.First single joint connection 1 on third fan blade 6, the
Second single joint connection 3 on one fan blade 4 is linked together by wirerope 2.First, second single joint connection 1,
3 are aligned close to blade root side with each fan blade width maximum, are close to one lateral extent fan blade width maximum of blade tip
The 5% of leaf length.When normal work, each list joint connection, can be real by the force component by wirerope 2 on blade root direction
The self-locking function of now all single joint connections further enhances the stabilization that all single joint connections are connect with blade
Property.Effective connection length of the wirerope between each single joint connection is radical sign three of the blade maximum cross-section to blade root distance
Times.
As shown in Fig. 2, second single joint connection 3 is mainly made of upper bush 7, lower sleeve 8, wherein upper bush 7 exists
The leaf basin side of first fan blade 4 is installed, and lower sleeve 8 is installed in the blade back side of the first fan blade 4.On the inside of sleeve
Rubber layer 9, rubber layer thickness 50mm, the surface for protecting fan blade to contact are laid, and plays friction and increases resistance
Effect.Upper bush 7 is connect at lower sleeve 8 in front of the blade edge by the second bolt 11 of single-row layout pattern, and upper bush 7 is under
Sleeve 8 is connected at trailing edge by the first bolt 10 of single-row layout pattern.It is arranged in 8 outside middle section of lower sleeve
Wirerope connector 12, for being connect with wirerope 2.Spary antirust paint on the outside of all attachment devices reduces rain erosion in routine use
The influence of effect guarantees the reliability of attachment device.
When typhoon, typhoon prevailing wind direction according to weather report passes through yaw device and adjusts impeller face typhoon prevailing wind direction；
While reducing wheel speed by pneumatic braking system, all fan blades complete feathering process；Pass through mechanical braking system
Further the second fan blade 5 of adjustment and ground level, then mechanical braking system keeps on-position.
Under 90 ° of the unexpected deflection angle of typhoon prevailing wind direction of extreme case, as shown in figure 3, the wind of feathering operation is completed
Machine blade will bear wind load with maximum front face area, at this point, due to the second fan blade 5 and ground level, by
The influence of typhoon wind direction mutation is smaller, and the first fan blade 4 still will receive wind load effect with third fan blade 6.Due to first
Fan blade 4 and the plane approximation locating for the second fan blade 5 of third fan blade 6 are symmetrical, thus the first fan blade 4 with
Wind load size suffered by third fan blade 6 is essentially identical, and three fan blade entirety stress are in a basic balance, effectively reduces
The carrying of mechanical braking system.In addition, wirerope 2 can provide adaptive for the first fan blade 4 and third fan blade 6
Clamp force, and then change lower first fan blade 4 of typhoon effect and the stress distribution situation on third fan blade 6, improve blade
The stress concentration phenomenon that root is likely to occur improves the reliability of Fan Equipment.
Claims (2)
1. blower Blade Steel cable attachment device under a kind of mechanical brake state, it is characterised in that: blower leaf under mechanical brake state
Piece steel cable connecting device for air includes two sets of single joint connections and a wirerope；The list joint connection is installed close to leaf
Root side is aligned with fan blade width maximum, and effective length of the wirerope between each single joint connection is that blade is maximum
Three times of radical sign to blade root distance of section；The list joint connection lays rubber layer in sleeve inside up and down；It is singly connect a set of
Middle section arranges wirerope connector on the outside of the upper bush of head attachment device, on the outside of another set of single joint connection lower sleeve
Middle section arranges wirerope connector: blade is conventional along after slurry process, does not install single connector by mechanical braking system adjustment
The fan blade of attachment device, with ground level, and keeps on-position after along slurry operation.
2. blower Blade Steel cable attachment device under a kind of mechanical brake state according to claim 1, it is characterised in that: platform
When wind prevailing wind direction is mutated, the fan blade of single joint connection is not installed substantially not by wind load action, while wirerope is dress
There are 2 fan blades of single joint connection to provide adaptive tensile force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610146777.8A CN105736240B (en) | 2016-03-15 | 2016-03-15 | Blower Blade Steel cable attachment device under a kind of mechanical brake state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610146777.8A CN105736240B (en) | 2016-03-15 | 2016-03-15 | Blower Blade Steel cable attachment device under a kind of mechanical brake state |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105736240A CN105736240A (en) | 2016-07-06 |
| CN105736240B true CN105736240B (en) | 2019-03-01 |
Family
ID=56250690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610146777.8A Expired - Fee Related CN105736240B (en) | 2016-03-15 | 2016-03-15 | Blower Blade Steel cable attachment device under a kind of mechanical brake state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105736240B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089573A (en) * | 2016-08-29 | 2016-11-09 | 苏德华 | There is on a kind of blade the wind electric impeller of stay cord and vane change device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101230834A (en) * | 2007-12-25 | 2008-07-30 | 黄金伦 | Stretching type wind mill wind wheel |
| CN101413477A (en) * | 2007-10-20 | 2009-04-22 | 黄金伦 | Floating raft-reducing three-vane wind wheel |
| GB2461753A (en) * | 2008-07-15 | 2010-01-20 | Univ Nottingham | Bracing Arrangement for Large Horizontal-Axis Wind-Turbine |
| CN102536683A (en) * | 2012-01-19 | 2012-07-04 | 清华大学 | Zonal guy cable device used for enhancing blade stability of large-scale wind driven generator |
| CN102777322A (en) * | 2011-05-06 | 2012-11-14 | 远景能源（丹麦）有限公司 | A wind turbine and associated control method |
| CN103089553A (en) * | 2013-01-17 | 2013-05-08 | 清华大学 | Articulated truss fixed variable pitch combined blade device |
| CN104612896A (en) * | 2014-12-12 | 2015-05-13 | 西北工业大学 | Offshore wind power generation typhoon-resistance control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004169610A (en) * | 2002-11-20 | 2004-06-17 | Ko Yamaguchi | Propeller |
-
2016
- 2016-03-15 CN CN201610146777.8A patent/CN105736240B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413477A (en) * | 2007-10-20 | 2009-04-22 | 黄金伦 | Floating raft-reducing three-vane wind wheel |
| CN101230834A (en) * | 2007-12-25 | 2008-07-30 | 黄金伦 | Stretching type wind mill wind wheel |
| GB2461753A (en) * | 2008-07-15 | 2010-01-20 | Univ Nottingham | Bracing Arrangement for Large Horizontal-Axis Wind-Turbine |
| CN102777322A (en) * | 2011-05-06 | 2012-11-14 | 远景能源（丹麦）有限公司 | A wind turbine and associated control method |
| CN102536683A (en) * | 2012-01-19 | 2012-07-04 | 清华大学 | Zonal guy cable device used for enhancing blade stability of large-scale wind driven generator |
| CN103089553A (en) * | 2013-01-17 | 2013-05-08 | 清华大学 | Articulated truss fixed variable pitch combined blade device |
| CN104612896A (en) * | 2014-12-12 | 2015-05-13 | 西北工业大学 | Offshore wind power generation typhoon-resistance control system |
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| Publication number | Publication date |
|---|---|
| CN105736240A (en) | 2016-07-06 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20180717 Address after: 710072 Navigation College, 127 Youyi West Road, Xi'an, Shaanxi Province Applicant after: Northwestern Polytechnical University Applicant after: RESEARCH & DEVELOPMENT INSTITUTE OF NORTHWESTERN POLYTECHNICAL University IN SHENZHEN Address before: 710072 127 Youxi Road, Beilin District, Xi'an, Shaanxi Applicant before: Northwestern Polytechnical University |
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Granted publication date: 20190301 |
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