CN107842462A - A kind of control device of blower fan critical speed - Google Patents
A kind of control device of blower fan critical speed Download PDFInfo
- Publication number
- CN107842462A CN107842462A CN201711078649.5A CN201711078649A CN107842462A CN 107842462 A CN107842462 A CN 107842462A CN 201711078649 A CN201711078649 A CN 201711078649A CN 107842462 A CN107842462 A CN 107842462A
- Authority
- CN
- China
- Prior art keywords
- control device
- flap
- blade
- blower fan
- fan blade
- 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
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000009527 percussion Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241001075561 Fioria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
-
- 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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- 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
- F03D7/0252—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking with aerodynamic drag devices on the blades
-
- 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
- F03D7/0276—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling rotor speed, e.g. variable speed
-
- 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
- F03D7/06—Controlling wind motors the wind motors having rotation axis substantially perpendicular to the air flow entering the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/101—Purpose of the control system to control rotational speed (n)
- F05B2270/1011—Purpose of the control system to control rotational speed (n) to prevent overspeed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/60—Control system actuates through
- F05B2270/604—Control system actuates through hydraulic actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/60—Control system actuates through
- F05B2270/606—Control system actuates through mechanical actuators
-
- 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
- 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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Abstract
A kind of control device of blower fan critical speed, belongs to wind power equipment technical field.The control device mainly includes flap, jack and buffer unit.Flap is connected by hinge with fan blade, and jack is connected by connector with flap and fan blade, and buffer unit is arranged in blade tip.When fan blade rotating speed exceedes its critical speed, flap deviates its initial position under jack effect and the rotation of around hinge axle is angled with fan blade, therefore the air drag that the front face area increase of blade is subject to also increases, blower fan blade rotational speed reduces under air drag effect.The control device does not need complicated mechanical mechanism can to realize the control to fan blade rotating speed, greatly reduce the cost and fault rate of blower fan, the blower fan risk that generating equipment is damaged caused by rotating speed is too fast is also largely reduced simultaneously, and the control device can be widely applied to various trunnion axis blower fans and vertical shaft fan in addition.
Description
Technical field
The present invention relates to a kind of control device of blower fan critical speed, belong to wind power equipment technical field.
Background technology
Increasingly in short supply with fossil energy, sight is turned to regenerative resource by countries in the world one after another.Wind energy is as a kind of
Cleaning, reproducible green energy resource receive significant attention.Wind-power electricity generation is presently the most main wind energy utilization means, main logical
Crossing wind drives fan blade to rotate so as to drive generating equipment to rotate to produce electric energy, mainly includes trunnion axis blower fan and vertical axis
Two kinds of blower fan.Wind power plant is broadly divided into land power plant and power generating plant on sea at present, compared with land, marine shelter compared with
Few space is more wide, therefore wind energy resources is more concentrated, stably.Natural environment and life of the marine wind field to surrounding simultaneously
Environment influence is smaller, so as to reduce wind field operation cost.Therefore compared with the Wind Power Generation of land, offshore wind farm exploitation has more
Technology and cost advantage.
Offshore wind turbine will also face more severe maritime environment while can obtain more wind resources, including
The influence of the harassment of wave, ocean current, seawater corrosion and typhoon.For China, southeastern coast includes Jiangsu, Fujian and wide
The province such as east offshore wind energy resource is enriched, but the annual typhoon period that can all have the several months simultaneously, and offshore production life is caused not
Small influence, need to consider survival ability of the blower fan under extreme environment for this.Fan blade can be at a high speed when typhoon passes by
Operating, the rotating speed of TRT can acutely increase even more than its critical speed in this case, so as to cause serious " fly
Car " accident, this can cause huge damage to fan blade and TRT, or even directly destroy TRT.Therefore to sea
, it is necessary to which special device controls critical speed of the blower fan under extreme weather conditions for fan, the sea of blower fan is improved
Survival ability reduces maintenance cost, so as to improve its economic benefit to a greater degree.
The content of the invention
In order to solve problems of the prior art, the present invention provides a kind of control device of blower fan critical speed, should
Control device can reduce the rotating speed of blower fan under the conditions of typhoon etc. is exceedingly odious, its rotating speed is maintained the area of normal operation
Between, so as to realize self-protection of the blower fan under overspeed condition.
The technical solution adopted by the present invention is：A kind of control device of blower fan critical speed, it includes fan blade, it
Also include a flap, jack and buffer unit, the flap is connected by first axle with fan blade, described
One end of jack is fixed on the first connector, and the other end is fixed on the second connector, and the first connector passes through third hinge
With fan blade hinge connection, the second connector is by second hinge and flap hinge connection, at the tip of fan blade
Provided with buffer unit, buffer unit is engaged with the blade tip of flap；When the rotating speed of fan blade is less than critical speed,
The flap is in closure state positioned at initial position in the presence of jack, when the rotating speed of fan blade is higher than critical turn
When fast, the flap starts rotation in the presence of jack and is changed into opening.
The buffer unit is used in buffer deceleration plate closing to the cushion pad or buffer spring of blade percussion.
When the flap is located at closure state, the surface of fan blade and the surface of flap are using the stream seamlessly transitted
Linear profile.
The jack uses passive control mode or active control mode, using spring, hydraulic means mechanism
Realize the folding and unfolding of flap.
The control device is applied to trunnion axis blower fan or vertical shaft fan.
The control device is installed on the relevant position of fan blade, including blade root and blade tip position, and with blower fan leaf
Piece is engaged.
The control device realizes the change of air drag suffered by fan blade by the unlatching of flap with closure, so as to
The regulation to fan blade rotating speed is realized using air drag.
The beneficial effects of the invention are as follows：The control device of this blower fan critical speed includes fan blade, flap, folding and unfolding
Mechanism and buffer unit.Flap is connected through the hinge with fan blade, and buffer unit is provided with the tip of fan blade.When
When the rotating speed of fan blade is less than critical speed, flap is located at closure state, when the rotating speed of fan blade is higher than critical speed
When, flap, which rotates, becomes opening.When flap is located at opening, the air drag increase of fan blade, so as to
The critical speed of blower fan is controlled, realizes braking, protection under high speed conditions to blower fan.The control device is according to change blower fan
Air drag size realizes the control to blade rotational speed, therefore can be widely applied to trunnion axis blower fan and vertical shaft wind
Machine.In addition the device also reduces the cost of a whole set of blower fan apparatus while failure rate of machinery is reduced.Work as fan blade in addition
When rotating speed exceedes critical speed, the different angle that flap is opened can be allowed according to the difference of actual speed to produce extra sky
Atmidometer, blade rotational speed is adjusted by the size of air drag.
Brief description of the drawings
Fig. 1 is the schematic diagram that a kind of control device of blower fan critical speed is applied on vertical shaft fan.
Fig. 2 is a kind of structure chart of the control device of blower fan critical speed.
Fig. 3 is the structure chart that a kind of flap of the control device of blower fan critical speed is located at closure state.
Fig. 4 is the structure chart that a kind of flap of the control device of blower fan critical speed is located at opening.
In figure：1st, fan blade, 1a, blade tip, 2, first axle, 2a, second hinge, 2b, third hinge, 3, subtract
Fast plate, 3a, tip, the 4, first connector, 4a, the second connector, 5, jack, 6, buffer unit.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1,2,3,4 show a kind of structure chart of the control device of blower fan critical speed.This blower fan critical speed
Control device includes fan blade 1, flap 3, jack 5 and buffer unit 6.Flap 3 passes through first axle 2 and blower fan
The hinge connection of blade 1.One end of jack 5 is fixedly connected on the first connector 4, and the other end is fixedly connected to be connected with second
Part 4a, the first connector 4 are connected by third hinge 2b with fan blade 1, and the second connector 4a is by second hinge 2a with subtracting
Fast plate 3 is connected, and buffer unit 6, the blade tip 3a phases of buffer unit 6 and flap 3 are provided with the tip 1a of fan blade 1
Coordinate.When the rotating speed of fan blade 1 is less than critical speed, the flap 3 is located at initial bit in the presence of jack 5
It is in closure state to put.When the rotating speed of fan blade 1 is higher than critical speed, the flap 3 is opened in the presence of jack 5
Beginning rotation becomes opening.
Jack 5 uses passive control mode or active control mode, can be real by mechanisms such as spring, hydraulic means
The unlatching and recovery of existing flap.Buffer unit 6 uses the cushion pad or buffering elastic of impulsive force when can be closed with buffer deceleration plate 3
Spring.When flap 3 is located at closure state, the surface of fan blade 1 is used outside the streamlined seamlessly transitted with the surface of flap 3
Shape.
The concrete operating principle of above-mentioned technical proposal is as follows：Blower fan starts to rotate under incoming effect, when blade rotational speed is low
When critical speed, it is located at closure state under jack effect with the flap that blade rotates together with, as shown in Figure 3.When
When blade rotational speed exceedes critical speed, jack is triggered, and flap rotates deviation under jack effect around jointed shaft
Its initial position, Leaf-Air resistance is caused to increase as shown in figure 4, fan blade front face area becomes big, fan blade rotating speed drop
It is low so as to realize control blower fan critical speed purpose.When fan blade rotating speed is reduced to below critical speed, in radio and tape player
The lower flap of structure effect returns to initial closed state, will be closed in a flash in flap, it is right to reduce its by buffer unit
The impulsive force of fan blade.
For the device control function is better achieved, fan blade should accordingly be set in the control device installation site
Meter, include the reinforcement of relevant range structure, while design reserves enough spaces to accommodate flap, jack and its phase
Correlate connection member.
The size of flap and the relevant parameter of jack should according to circumstances be designed selection, be considered as during design
The wind-force size in assembling place, the rated speed and critical speed of blower fan, while consider the correlations such as fan blade size
Factor.
Claims (7)
1. a kind of control device of blower fan critical speed, it includes fan blade（1）, it is characterised in that：It also subtracts including one
Fast plate（3）, jack（5）And buffer unit（6）, the flap（3）Pass through first axle（2）With fan blade（1）Even
Connect, the jack（5）One end be fixed on the first connector（4）, the other end is fixed on the second connector（4a）, first connects
Fitting（4）Pass through third hinge（2b）With fan blade（1）Hinge connection, the second connector（4a）Pass through second hinge（2a）With
Flap（3）Hinge connection, in fan blade（1）Tip（1a）Place is provided with buffer unit（6）, buffer unit（6）With deceleration
Plate（3）Blade tip（3a）It is engaged；Work as fan blade（1）Rotating speed when being less than critical speed, the flap（3）Receiving
Laying mechanism（5）In the presence of positioned at initial position be in closure state, work as fan blade（1）Rotating speed when being higher than critical speed, institute
State flap（3）In jack（5）In the presence of start rotation and be changed into opening.
A kind of 2. control device of blower fan critical speed according to claim 1, it is characterised in that：The buffer unit
（6）Using in buffer deceleration plate（3）To the cushion pad or buffer spring of blade percussion during closure.
A kind of 3. control device of blower fan critical speed according to claim 1, it is characterised in that：The flap（3）
During positioned at closure state, fan blade（1）Surface and flap（3）Surface using the slender contour that seamlessly transits.
A kind of 4. control device of blower fan critical speed according to claim 1, it is characterised in that：The jack is adopted
With passive control mode or active control mode, the folding and unfolding of flap is realized using spring, hydraulic means mechanism.
A kind of 5. control device of blower fan critical speed according to claim 1, it is characterised in that：The control device should
For trunnion axis blower fan or vertical shaft fan.
A kind of 6. control device of blower fan critical speed according to claim 1, it is characterised in that：The control device peace
Relevant position loaded on fan blade, including blade root and blade tip position, and be engaged with fan blade.
A kind of 7. control device of blower fan critical speed according to claim 1, it is characterised in that：The control device leads to
Cross the unlatching of flap and closure realizes the change of air drag suffered by fan blade, so as to be realized using air drag to blower fan
The regulation of blade rotational speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711078649.5A CN107842462A (en) | 2017-11-04 | 2017-11-04 | A kind of control device of blower fan critical speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711078649.5A CN107842462A (en) | 2017-11-04 | 2017-11-04 | A kind of control device of blower fan critical speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107842462A true CN107842462A (en) | 2018-03-27 |
Family
ID=61681379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711078649.5A Pending CN107842462A (en) | 2017-11-04 | 2017-11-04 | A kind of control device of blower fan critical speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107842462A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4290071A1 (en) | 2022-06-09 | 2023-12-13 | Seaquenz SL | Floating vertical offshore wind turbine with compensation system and method to prevent the overturning of said floating wind turbine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137843A (en) * | 2005-03-07 | 2008-03-05 | 株式会社Ipb | Blade for vertical shaft windmill and lift type vertical shaft windmill having the same |
| US20100021300A1 (en) * | 2007-02-20 | 2010-01-28 | Tsuneo Noguchi | Vertical axis windmill |
| CN102536665A (en) * | 2011-12-09 | 2012-07-04 | 河海大学 | Lifting-power type vertical shaft windmill adopting aerodynamic brake |
| CN207500043U (en) * | 2017-11-04 | 2018-06-15 | 大连理工大学 | A kind of control device of wind turbine critical speed |
-
2017
- 2017-11-04 CN CN201711078649.5A patent/CN107842462A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137843A (en) * | 2005-03-07 | 2008-03-05 | 株式会社Ipb | Blade for vertical shaft windmill and lift type vertical shaft windmill having the same |
| US20100021300A1 (en) * | 2007-02-20 | 2010-01-28 | Tsuneo Noguchi | Vertical axis windmill |
| CN102536665A (en) * | 2011-12-09 | 2012-07-04 | 河海大学 | Lifting-power type vertical shaft windmill adopting aerodynamic brake |
| CN207500043U (en) * | 2017-11-04 | 2018-06-15 | 大连理工大学 | A kind of control device of wind turbine critical speed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4290071A1 (en) | 2022-06-09 | 2023-12-13 | Seaquenz SL | Floating vertical offshore wind turbine with compensation system and method to prevent the overturning of said floating wind turbine |
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