CN113982840A - Power-increasing wind turbine suitable for mountain valley wind and power generation method - Google Patents
Power-increasing wind turbine suitable for mountain valley wind and power generation method Download PDFInfo
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- CN113982840A CN113982840A CN202111275759.7A CN202111275759A CN113982840A CN 113982840 A CN113982840 A CN 113982840A CN 202111275759 A CN202111275759 A CN 202111275759A CN 113982840 A CN113982840 A CN 113982840A
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- 238000010248 power generation Methods 0.000 title claims description 18
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- 230000009471 action Effects 0.000 claims description 44
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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
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/0608—Rotors characterised by their aerodynamic shape
- F03D1/0625—Rotors characterised by their aerodynamic shape of the whole rotor, i.e. form features of the rotor unit
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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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/0608—Rotors characterised by their aerodynamic shape
- F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
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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
- 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
- F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
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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
- 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
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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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
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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
- 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
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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
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
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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
- F03D7/06—Controlling wind motors the wind motors having rotation axis substantially perpendicular to the air flow entering the rotor
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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
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/30—Wind motors specially adapted for installation in particular locations
- F03D9/48—Wind motors specially adapted for installation in particular locations using landscape topography, e.g. valleys
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- 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
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/301—Cross-section characteristics
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- 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
- F05B2260/00—Function
- F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
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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
-
- 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
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- Engineering & Computer Science (AREA)
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- Sustainable Development (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Power Engineering (AREA)
- Remote Sensing (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a power-increasing wind turbine suitable for mountain valley wind, which comprises a tower cylinder, wherein the top of the tower cylinder is provided with a cabin, the input end of the cabin is connected with a wind wheel shaft, a generator is arranged in the cabin and used for converting mechanical energy transmitted by the wind wheel shaft into electric energy, the wind wheel shaft is connected with a hub, the hub is connected with horizontal incoming flow acting blades, and a plurality of horizontal incoming flow acting blades are arrayed in the circumferential direction of the hub; the method comprises the following steps that a plurality of quasi-vertical incoming flow acting blades are arrayed on a rotating upper ring of a hub in a rotating direction, the quasi-vertical incoming flow acting blades are bionic wing profiles, the rear edges of the quasi-vertical incoming flow acting blades are connected with horizontal incoming flow acting blades, and the windward side of the quasi-vertical incoming flow acting blades faces to the direction of the blade roots of the horizontal incoming flow acting blades; the span direction of the horizontal incoming flow acting blade is taken as a reference, the structures of the quasi-vertical incoming flow acting blades on the same circle diameter are the same, the chord lengths of the airfoil sections of all the sections are the same, and the chord lengths of the airfoil sections of the quasi-vertical incoming flow acting blades are gradually reduced from the blade tip of the horizontal incoming flow acting blade to the blade root. The invention increases the utilization rate of wind energy.
Description
Technical Field
The invention belongs to the technical field of renewable resource utilization, and particularly belongs to a power-increasing wind turbine suitable for mountain valley wind and a power generation method.
Background
In recent years, with the increasing problem of energy shortage, the awareness of environmental protection and the concept of sustainable development, the importance of clean energy and renewable energy is recognized. Wind energy has attracted attention due to the advantages of wide distribution, environmental protection, no pollution, cleanness, reproducibility and the like, and wind power generation has rapidly developed. The wind energy resources mainly comprise onshore wind power and offshore wind power. And onshore wind power is mainly built in the gobi, mountain bags and other areas with rare smoke. There are two main types of wind turbines in common use: horizontal axis wind turbines and vertical axis wind turbines. The horizontal axis wind turbine is widely applied because the generating efficiency is higher than that of the vertical axis wind turbine. The yaw system of the horizontal axis wind turbine can actively face wind, so that the wind turbine can reduce the loss of wind energy as much as possible and improve the utilization rate of the wind energy; the variable pitch system can enable blades of the wind turbine to rotate by a certain angle through information transmitted by the anemorumbometer, and the rotating speed and the power of a rotor of the wind turbine are controlled by changing the angle of the blades. However, in the area such as the hill bag, there are not only horizontal incoming flows but also mountain valley winds. The horizontal axis wind turbine which is installed in the mountainous bag and other zones in site can only convert most of the horizontal incoming flow, and cannot effectively utilize the mountain valley wind.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a power-increasing wind turbine suitable for mountain valley wind and a power generation method, and solves the problem that the wind energy is lost because the existing wind turbine cannot convert the mountain valley wind.
In order to achieve the purpose, the invention provides the following technical scheme: the power-increasing wind turbine suitable for valley wind comprises a tower barrel and a plurality of horizontal incoming flow acting blades, wherein the top of the tower barrel is provided with an engine room, the input end of the engine room is connected with a wind wheel shaft, a generator is arranged in the engine room and used for converting mechanical energy transmitted by the wind wheel shaft into electric energy, the wind wheel shaft is connected with a hub, the hub is connected with the horizontal incoming flow acting blades, and the plurality of horizontal incoming flow acting blades are arrayed in the circumferential direction of the hub;
the circular array in the rotating direction of the hub is provided with a plurality of quasi-vertical incoming flow acting blades, the quasi-vertical incoming flow acting blades are bionic wing profiles, the trailing edges of the quasi-vertical incoming flow acting blades are connected with the horizontal incoming flow acting blades, and the windward side of the quasi-vertical incoming flow acting blades faces to the direction of the blade roots of the horizontal incoming flow acting blades;
the span direction of the horizontal incoming flow acting blade is taken as a reference, the structures of the quasi-vertical incoming flow acting blades on the same circle diameter are the same, the chord lengths of the airfoil sections of all the sections are the same, and the chord lengths of the airfoil sections of the quasi-vertical incoming flow acting blades are gradually reduced from the blade tip of the horizontal incoming flow acting blade to the blade root.
Furthermore, the pseudo-vertical incoming flow action blade is arranged close to the root of the horizontal incoming flow action blade, the root of the horizontal incoming flow action blade is used, and the pseudo-vertical incoming flow action blade is located in the range of 30% of the total length of the horizontal incoming flow action blade.
Further, the quasi-vertical incoming flow effect blade comprises a first vertical blade and a second vertical blade, the airfoil chord length of the first vertical blade is C1 ═ 2.5-3 × 1, the airfoil chord length of the second vertical blade is C2 ═ 2.1-2.8 × 2, wherein: c1 is the airfoil chord length of the first vertical blade, X1 is the airfoil chord length at the joint of the first vertical blade and the horizontal inflow acting blade, C2 is the airfoil chord length of the second vertical blade, and X2 is the airfoil chord length at the joint of the second vertical blade and the horizontal inflow acting blade.
Further, the length of the first vertical blade is: l1 is (3.2-4) X1, and the length of the second vertical blade is:
L2＝(3.5～4.6)*X2。
further, the distance between the first vertical blade and the blade root of the blade acted by the horizontal incoming flow is as follows: h2 is (0.3-0.26) H, and the distance between the second vertical blade and the blade root of the horizontal incoming flow acting blade is as follows: h1 ═ 0.15 to 0.22 × H; in the formula: h is the total length of the horizontal inflow effect blade.
Furthermore, the top of cabin is connected with first anemorumbometer, first anemorumbometer is perpendicular with the horizontal incoming flow wind, still be connected with second anemorumbometer on the cabin, second anemorumbometer is perpendicular with first anemorumbometer, first anemorumbometer is used for monitoring the wind speed and the wind direction of horizontal incoming flow wind, second anemorumbometer is used for monitoring the wind speed and the wind direction of valley wind.
Furthermore, the blade root of the horizontal incoming flow action blade is connected with the hub, the hub is provided with a first variable pitch device, the first variable pitch device is located at the blade root position of the horizontal incoming flow action blade and used for controlling the variable pitch of the horizontal incoming flow action blade, a variable pitch processing unit is further arranged in the nacelle, the quasi-vertical incoming flow action blade is provided with a second variable pitch device, the second variable pitch device is located at the connection position of the quasi-vertical incoming flow action blade and the horizontal incoming flow action blade, and the second variable pitch device is used for controlling the variable pitch of the quasi-vertical incoming flow action blade;
the first anemorumbometer and the second anemorumbometer are further respectively used for transmitting the wind speed and the wind direction of horizontal incoming wind and the wind speed and the wind direction of valley wind to a variable-pitch processing unit in the engine room, and the variable-pitch processing unit is further used for respectively controlling a first variable-pitch device and a second variable-pitch device according to data transmitted by the first anemorumbometer and the second anemorumbometer.
Further, the spacing distance between adjacent quasi-vertical incoming flow acting blades is the same.
The invention also provides a power generation method of the power-increasing wind turbine suitable for the valley wind, wherein a horizontal incoming flow acting blade is subjected to pitch variation through a first pitch variation device, a second pitch variation device is arranged on the horizontal incoming flow acting blade and a quasi-vertical incoming flow acting blade, the second pitch variation device is positioned at the joint of the quasi-vertical incoming flow acting blade and the horizontal incoming flow acting blade, a pitch variation processing unit is also arranged in the engine room, and the pitch variation processing unit is used for respectively driving the first pitch variation device and the second pitch variation device to control the horizontal incoming flow acting blade and the quasi-vertical incoming flow acting blade to vary the pitch; the method comprises the following steps:
when horizontal incoming wind blows to the power-increasing wind turbine, the first variable pitch device controls the horizontal incoming wind acting blades to be opened, the second variable pitch device controls the blades simulating vertical incoming flow to be feathered, the blades simulating vertical incoming flow do not work, the horizontal incoming wind acts on the horizontal incoming flow acting blades, the horizontal incoming flow acting blades rotate to drive the wind wheel shaft to rotate, the wind wheel shaft is connected with the gear box, the gear box is connected with the generator, the generator converts mechanical energy transmitted by the wind wheel shaft into electric energy, and power generation of the power-increasing wind turbine is completed;
when valley wind blows to the power-increasing wind turbine, the first variable pitch device controls the horizontal incoming flow acting blades to feather, the second variable pitch device controls the pseudo-vertical incoming flow acting blades to open the blades, the horizontal incoming flow acting blades do not work, the valley wind acts on the pseudo-vertical incoming flow acting blades, the pseudo-vertical incoming flow acting blades rotate to drive the wind wheel shaft to rotate, the wind wheel shaft transmits mechanical energy to the generator, the generator converts the mechanical energy transmitted by the wind wheel shaft into electric energy, and the power generation of the power-increasing wind turbine is completed;
when horizontal incoming wind blows to the power-increasing wind turbine and valley wind blows to the power-increasing wind turbine, the first variable pitch device controls the horizontal incoming wind to act on the blades to open the propellers, the second variable pitch device controls the pseudo-vertical incoming wind to act on the blades to open the propellers, the horizontal incoming wind acts on the horizontal incoming wind, the valley wind acts on the pseudo-vertical incoming wind, the torques of the pseudo-vertical incoming wind acting blades and the horizontal incoming wind acting blades are superposed and drive the wind wheel shaft to rotate, the wind wheel shaft transmits mechanical energy to the generator, and the generator converts the mechanical energy transmitted by the wind wheel shaft into electric energy to complete the power generation of the power-increasing wind turbine.
Further, when the second variable pitch device adjusts the quasi-vertical incoming flow acting blade, the quasi-vertical incoming flow acting blade is always perpendicular to the valley wind.
Compared with the prior art, the invention has at least the following beneficial effects:
the invention provides a power-increasing wind turbine suitable for valley wind, which is characterized in that a horizontal incoming flow acting blade is connected to the circumference of a hub and used for converting the horizontal incoming flow wind, the horizontal incoming flow acting blade is connected with a pseudo-vertical incoming flow acting blade and used for converting the valley wind. The quasi-vertical incoming flow blade is equivalent to a resistance device, when a vertical incoming flow blows to the quasi-vertical incoming flow acting blade, a wind wheel is pushed to rotate, the blade tip of the horizontal incoming flow acting blade faces the blade root direction, and the airfoil chord length of the quasi-vertical incoming flow acting blade is gradually reduced.
Furthermore, the main work output area of the horizontal incoming flow acting blade is beyond 30% of the blade span direction, and the pseudo-vertical incoming flow acting blade is added within 30% of the horizontal incoming flow acting blade close to the blade root to capture the valley wind, so that the wind turbine can capture the valley wind and the horizontal incoming flow wind at the same time, increase the resource utilization rate, and solve the problems that a wind turbine installed on a hillside is low in wind energy conversion efficiency and cannot fully and reasonably utilize the valley wind.
Furthermore, the quasi-vertical incoming flow blade is divided into the first vertical blade and the second vertical blade mainly because the distance between the horizontal incoming flow acting blades along the blade tips to the blade roots is gradually reduced, and in order to capture and convert valley wind with greater efficiency and reasonably utilize the area within 30% of the blade roots, the first vertical blade and the second vertical blade are arranged according to the distance between the horizontal incoming flow acting blades along the blade tips to the blade roots.
Furthermore, compared with a common straight-plate type blade and a semi-arc type blade, the quasi-vertical incoming flow blade adopting the bionic wing type has higher pneumatic performance, and can further improve the conversion of wind energy and further increase the working condition of the wind turbine.
Furthermore, the horizontal inflow acting blades and the quasi-vertical acting blades are controlled by the variable pitch device, so that valley wind can be captured to the maximum extent, and the energy conversion efficiency of the wind turbine is the maximum.
Furthermore, the arrangement of the two anemorumbometers can monitor the flow speed and the flow direction of horizontal and quasi-vertical incoming flows, so that a guiding effect is provided for blade pitch variation, valley wind can be efficiently captured, and the blade pitch variation under the action of horizontal incoming flows can be prevented from colliding with a tower barrel when driving the blades under the action of quasi-vertical incoming flows to rotate.
When horizontal incoming wind blows to the power-increasing wind turbine, the blades are controlled to feather through the second variable pitch device under the action of the quasi-vertical incoming flow, so that the resistance borne by the power-increasing wind turbine is minimum, the stress of the whole blades of the power-increasing wind turbine is reduced, the load of the wind turbine is also reduced, the operation influence on the whole machine is reduced to the minimum, and the output power of the power-increasing wind turbine is increased along with the increase of the wind speed; when the horizontal incoming flow wind blows to the power-increasing wind turbine and the valley wind blows to the power-increasing wind turbine, the torques generated by the pseudo-vertical incoming flow acting blades and the horizontal incoming flow acting blades are superposed, so that the wind turbine shaft obtains a larger rotating speed. The utilization rate of wind energy is ensured, and the wind energy can be well applied and converted no matter horizontal incoming wind or mountain valley wind.
Furthermore, the pseudo-vertical incoming flow acting blades are always perpendicular to the mountain valley wind, the pseudo-vertical incoming flow acting blades can obtain the maximum resistance, the generated resistance can push the wind wheel to rotate, the wind wheel rotates to drive the rotation of the rotating shaft of the wind wheel, and the rotating shaft can transmit the generated energy to the gear box and the generator, so that the conversion of the mountain valley wind energy is realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a rear side view of FIG. 1;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic front side view of the present invention;
FIG. 5 is a diagram of a usage scenario of the present invention;
FIG. 6 is a schematic structural view of a mid-horizontal inflow actuation blade and a quasi-vertical inflow actuation blade of the present invention;
FIG. 7 is an enlarged partial schematic view of a pseudo-vertical inflow vane on a horizontal inflow vane;
FIG. 8 is a view of a pseudo-vertical incoming flow action blade airfoil;
FIG. 9 is a sectional view of the airfoil of FIG. 8 taken along line A-A at the junction of the first vertical blade and the horizontal inflow blade;
FIG. 10 is a sectional view of the airfoil of FIG. 8 taken along line B-B at the junction of the second vertical blade and the horizontal inflow blade;
FIG. 11 is a view of a pseudo-vertical incoming flow effect vane;
FIG. 12 is an enlarged partial view of a horizontal oncoming flow blade connected to a pseudo-vertical oncoming flow blade;
FIG. 13 is a schematic view of horizontal wind and valley wind between hill-packs according to the present invention;
FIG. 14 is a schematic view of horizontal wind and mountain wind between mountain bags according to the present invention;
in the drawings: 1-a horizontal incoming flow acting blade, 2-a first vertical blade, 3-a second vertical blade, 4-a tower, 5-a first anemoscope, 6-a second anemoscope, 7-a second variable pitch device, 8-a cabin, 9-a hub, 10-a hill, 11-a valley, 12-a power-increasing wind turbine, 13-a quasi-vertical incoming flow acting blade, 14-a total length H of the horizontal incoming flow acting blade, 15-a distance H2 between the first vertical blade and the root, 16-a distance H1 between the root and the second vertical blade, 17-a chord length X1 between the first vertical blade and the horizontal incoming flow acting blade, 18-a chord length X2 between the second vertical blade and the horizontal incoming flow acting blade, 19-a chord length C1 between the first vertical blade, 20-airfoil chord length of the second vertical vane C2, 21-length of the first vertical vane L1, 22-length of the second vertical vane L2.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, 2, 4 and 5, the invention provides a power-increasing wind turbine suitable for valley wind, which is mainly applied to a region with valley wind, such as a small hill bag, and the like, wherein the valley region mainly has two types of horizontal incoming flow and quasi-vertical incoming flow, and the quasi-vertical incoming flow is the valley wind. The main work output area of the horizontal incoming flow acting blade 1 is beyond 30% of the blade span direction, so that the pseudo-vertical incoming flow acting blade 13 is added within 30% of the position, close to the blade root, of the horizontal incoming flow acting blade 1 to capture valley wind. Compared with the original horizontal axis wind turbine, the horizontal inflow and the vertical inflow of the valley region can be reasonably utilized and converted, the work doing condition of the wind turbine is increased, and the conversion rate of wind energy is further improved. The blade 13 of the wind turbine for simulating vertical incoming flow adopts a bionic wing type, and the application of the bionic wing type further improves the pneumatic performance of the wind turbine blade. In addition, two anemorumbometer devices are installed on the wind turbine to detect the conditions of horizontal incoming flow and quasi-vertical incoming flow respectively, and a second variable pitch device 7 is installed on the quasi-vertical incoming flow acting blade. The power of the wind turbine can be further improved.
As shown in fig. 3, in particular, the invention provides a power-increasing wind turbine suitable for mountain and valley wind, which includes a tower 4 and a plurality of horizontal inflow action blades 1, wherein the top of the tower 4 is provided with an engine room 8, the input end of the engine room 8 is connected with a wind wheel shaft, a generator in the engine room 8 is used for converting mechanical energy transmitted by the wind wheel shaft into electric energy, the wind wheel shaft is connected with a hub 9 through a flange, the hub 9 is connected with the horizontal inflow action blades 1, and the plurality of horizontal inflow action blades 1 are arrayed in the circumferential direction of the hub 9;
a plurality of quasi-vertical incoming flow acting blades 13 are arranged on a circular array in the rotating direction of the hub 9, the quasi-vertical incoming flow acting blades 13 are bionic wing profiles, the rear edges of the quasi-vertical incoming flow acting blades 13 are connected with the horizontal incoming flow acting blades 1, and the windward side of the quasi-vertical incoming flow acting blades 13 faces to the direction of the blade roots of the horizontal incoming flow acting blades 1;
the rotation direction of the horizontal incoming flow acting blade 1 is taken as a reference, the structures of the quasi-vertical incoming flow acting blades 13 on the same circle diameter are the same, the airfoil chord lengths of all sections are the same, and the airfoil chord lengths of the quasi-vertical incoming flow acting blades 13 are gradually reduced from the blade tip to the blade root of the horizontal incoming flow acting blade 1.
In the present embodiment, the spacing distance between adjacent pseudo-vertical incoming flow effecting vanes 13 is the same.
Specifically, the quasi-vertical incoming flow action blade 13 comprises a first vertical blade 2 and a second vertical blade 3, the structural size of each part of the device has a corresponding proportional relation with the chord length of an airfoil shape at the connecting part of the first vertical blade 2 and the second vertical blade 3 with the horizontal incoming flow action blade 1, and the proportional relation is as follows:
as shown in fig. 6, 7, 8, 9, 10 and 11, in the drawings, 14 is the total length H of the horizontal inflow influencing vane 1, 17 is the chord length X1 of the airfoil section connecting the first vertical vane 2 and the horizontal inflow influencing vane 1, 18 is the chord length X2 of the airfoil section connecting the second vertical vane 3 and the horizontal inflow influencing vane 1,
in the figure, 15 is the distance h2 between the first vertical blade 2 and the root of the horizontal incoming flow acting blade 1: h2 ═ 0.3 to 0.26 × H;
in the figure 16, the distance h1 between the second vertical blade 3 and the root of the horizontal incoming flow acting blade 1 is: h1 ═ 0.15 to 0.22 × H;
fig. 19 shows an airfoil chord length C1 of the first vertical blade 3: c1 ═ 2.5-3X 1;
in the figure 20, the airfoil chord length C2 of the second vertical blade 3 is: c2 ═ X2 (2.1-2.8);
in the figure 21 is the length L1 of the first vertical blade 2: l1 ═ 3.2-4X 1;
in the figure 22 is the length L2 of the second vertical blade 3: l2 ═ (3.5 to 4.6) × 2;
because the horizontal inflow action blade 1 of the power-increasing wind turbine 12 is close to the blade root and no work is basically done within 30% of the total length of the horizontal inflow action blade 1, the pseudo-vertical inflow action blade 13 is added within 30% of the horizontal inflow action blade 1 close to the blade root to capture the valley wind.
As shown in fig. 12, in this embodiment, in order to capture valley wind to the maximum extent and maximize the energy conversion efficiency of the augmented wind turbine 12, the second pitch device 7 is installed at the joint of the blade 13 with the quasi-vertical incoming flow effect, and two anemoscope devices are installed at the tail of the nacelle 8, and are used for monitoring the flow velocity and the flow direction of the horizontal and quasi-vertical incoming flows and providing a guiding effect for the blade pitch variation. By the design, the mountain valley wind can be efficiently captured, and the collision between the horizontal incoming flow blades and the tower barrel when the blades are driven to rotate under the action of the quasi-vertical incoming flow by the variable pitch of the blades can be avoided.
Specifically, the top of the nacelle 8 is connected with a first anemorumbometer 5, the first anemorumbometer 5 is perpendicular to horizontal incoming wind, the nacelle 8 is further connected with a second anemorumbometer 6, the second anemorumbometer 6 is perpendicular to the first anemorumbometer 5, the first anemorumbometer 5 is used for monitoring the wind speed and the wind direction of the horizontal incoming wind, the second anemorumbometer 6 is used for monitoring the wind speed and the wind direction of valley wind, the first anemorumbometer 5 and the second anemorumbometer 6 are further used for transmitting the wind speed and the wind direction of the horizontal incoming wind and the valley wind to a variable-pitch processing unit in the nacelle 8, the variable-pitch processing unit is further used for controlling a first variable-pitch device and a second variable-pitch device 7 according to data transmitted by the first anemorumbometer 5 and the second anemorumbometer 6, a yaw processing unit is further arranged at the connection between the nacelle 8 and the tower 4, and is used for active wind alignment of the wind turbine, the positions of the wind wheel and the cabin 8 are controlled according to data transmitted by the anemorumbometer, so that the axis of the wind wheel is consistent with the wind direction, and wind energy is captured as much as possible. Specifically, the variable pitch processing unit comprises a variable pitch processing unit of the horizontal incoming flow acting blade 1 and a variable pitch processing unit of the quasi-vertical incoming flow acting blade 13, the variable pitch processing unit of the horizontal incoming flow acting blade 1 and the variable pitch processing unit of the quasi-vertical incoming flow acting blade 13 control the first vertical blade and the second vertical blade through a first variable pitch device and a second variable pitch device 7 respectively, wherein the first variable pitch device is connected with the blade root of the horizontal incoming flow acting blade 1 at the hub 9, the quasi-vertical incoming flow acting blade 13 is connected with the horizontal incoming flow acting blade 1 through part components such as a flange bearing, and the part of the horizontal incoming flow acting blade 1 connected with the quasi-vertical incoming flow acting blade 13 is connected with the second variable pitch device 7. The horizontal inflow acting blade 1 and the quasi-vertical inflow acting blade 13 are subjected to pitching through the first pitching device and the second pitching device 7.
As shown in fig. 13 and 14, in another embodiment of the present invention, there is provided a power generation method for a power-increased wind turbine suitable for use in valley wind, including the following steps:
when horizontal incoming wind blows to the power-increasing wind turbine 12, the first variable pitch device controls the horizontal incoming wind acting blades 1 to be opened, the second variable pitch device 7 controls the pseudo-vertical incoming wind acting blades 13 to be feathered, the pseudo-vertical incoming wind acting blades 13 do not work, the horizontal incoming wind acts on the horizontal incoming wind acting blades 1, the horizontal incoming wind acting blades 1 rotate to drive the wind wheel shaft to rotate, the wind wheel shaft is connected with the gear box, the gear box is connected with the generator, the generator converts mechanical energy transmitted by the wind wheel shaft into electric energy, and power generation of the power-increasing wind turbine is completed;
when valley wind blows to the power-increasing wind turbine 12, the first variable pitch device controls the horizontal incoming flow acting blades 1 to feather, the second variable pitch device 7 controls the quasi-vertical incoming flow acting blades 13 to feather, the horizontal incoming flow acting blades 1 do not work, the valley wind acts on the quasi-vertical incoming flow acting blades 13, the quasi-vertical incoming flow acting blades 13 rotate to drive the wind turbine shaft to rotate, the wind turbine shaft transmits mechanical energy to the generator, the generator converts the mechanical energy transmitted by the wind turbine shaft into electric energy, and the power generation of the power-increasing wind turbine is completed;
when horizontal incoming wind blows to the power-increasing wind turbine and valley wind blows to the power-increasing wind turbine 12, the first variable pitch device controls the horizontal incoming wind to act on the blades 1 to open the propellers, the second variable pitch device 7 controls the quasi-vertical incoming wind to act on the blades 13 to open the propellers, the horizontal incoming wind acts on the horizontal incoming wind acting blades 1, the valley wind acts on the quasi-vertical incoming wind acting blades 13, the torques of the quasi-vertical incoming wind acting blades 13 and the horizontal incoming wind acting blades 1 are superposed and drive the wind wheel shaft to rotate, the wind wheel shaft transmits mechanical energy to the generator, and the generator converts the mechanical energy transmitted by the wind wheel shaft into electric energy to complete the power generation of the power-increasing wind turbine.
Specifically, 1) horizontal incoming flow blows to the wind turbine:
when only horizontal incoming flow exists in the valley, the horizontal incoming flow acts on the horizontal incoming flow acting blades 1 of the power-increasing wind turbine 12, and the horizontal incoming flow acting blades 1 are connected through the hub 9. The horizontal inflow effect blade 1 is in the open state at the initial moment. In the oar opening state, the wind energy captured by the blades is the largest, and the power generated by the power-increasing wind turbine 12 is also the largest; the quasi-vertical inflow acting blade 13 is connected to the horizontal inflow acting blade 1 at the positions h2 and h1 away from the blade roots by the second pitch device 7. The quasi-vertical incoming flow acting blade 13 is feathered under the condition, and the quasi-vertical incoming flow acting blade 13 can ensure that the power-increasing wind turbine 12 has the minimum resistance and the influence on the operation of the whole machine is reduced to the minimum during feathering. The pseudo-vertical incoming flow effecting vanes 13 are not active at this time. Therefore, the stress of the whole blade of the wind turbine can be reduced, the load of the wind turbine can be reduced, but the output power cannot be reduced due to the wind speed, so that the whole variable-pitch system can ensure rated power output on the premise of ensuring the safety of the unit, the unit can be completely feathered and shut down in extreme weather, the load of the unit is ensured to be minimum through the control of the yawing device and the variable-pitch device, the safety of the unit is ensured, and the variable-pitch system is of great importance to the safe operation of the whole wind turbine. When the wind speed reaches the starting wind speed, the horizontal incoming flow acting blades 1 rotate, meanwhile, the pseudo-vertical incoming flow acting blades 13 are driven to rotate, and the pseudo-vertical incoming flow acting blades 1 do not work. The output power of the power-increasing wind turbine 12 increases with the increase of the wind speed, and in order to enable the power-increasing wind turbine 12 to capture more wind energy, the horizontal inflow acting blade 1 performs corresponding pitch variation through the first pitch variation device according to the information fed back by the first anemorumbometer, so that the wind turbine receives the most wind energy. At this time, the second pitch control device 7 of the pseudo-vertical incoming flow acting blade 13 controls the pseudo-vertical incoming flow acting blade to change the pitch, so that the influence of the pseudo-vertical incoming flow acting blade 13 on the horizontal incoming flow acting blade 1 is reduced, and the pseudo-vertical incoming flow acting blade 13 is prevented from impacting the tower 4, thereby causing unnecessary danger. Therefore, the horizontal incoming flow can be effectively converted into mechanical energy, the mechanical energy is transmitted to a gear box and a generator which are positioned in the cabin 8 through a wind wheel shaft, and finally the wind energy is converted into electric energy required by people.
2) The wind blowing from the valley to the wind machine:
when only valley wind exists in the valley, the valley wind acts on the power-increasing wind turbine 12, the quasi-vertical incoming flow acts on the blade 13 to be driven to rotate, the blade 13 is driven to rotate by the rotation of the wind wheel shaft to convert wind energy, the quasi-vertical incoming flow acts on the blade 13 to be driven to rotate, the resistance borne by the quasi-vertical incoming flow acting blade 13 is the maximum, and in addition, the total resistance of the wind turbine blade can be further increased by the feathering of the horizontal incoming flow acting blade 1. In order to ensure that the quasi-vertical incoming flow acting blades 13 can have the maximum resistance at all times, the second anemorumbometer 6 can monitor the wind speed and the wind direction of local valley wind in real time, so as to provide sufficient information for a variable pitch processing unit of the quasi-vertical incoming flow acting blades 13, meanwhile, the second variable pitch device 7 of the quasi-vertical incoming flow acting blades 13 can adjust the angle of the quasi-vertical incoming flow acting blades 13 to prevent the variable pitch from excessively colliding with the tower 4, and the quasi-vertical incoming flow acting blades 13 are made to be perpendicular to the incoming flow as far as possible on the basis, so that the blades can obtain the maximum resistance, the generated resistance can push the wind wheel to rotate, the wind wheel rotates to drive the wind wheel shaft to rotate, and the wind wheel shaft transmits the generated energy to the gear box and the generator, thereby realizing the conversion of the valley wind energy.
3) Horizontal incoming flow and mountain valley wind blow to the wind turbine:
when horizontal incoming flow and valley wind exist in the valley at the same time, the horizontal incoming flow and the valley wind in the valley act on the power-increasing wind turbine 12, and the quasi-vertical incoming flow acting blade 13 and the horizontal incoming flow acting blade 1 work in a matched mode to capture wind energy. Under the condition, the horizontal incoming flow acting blade 1 and the quasi-vertical incoming flow acting blade 13 are both in oar opening, wind energy can be captured to the maximum when the horizontal incoming flow acting blade 1 is in oar opening, and the quasi-vertical incoming flow acting blade 13 is arranged within 30% of the position, close to the blade root, of the horizontal incoming flow acting blade 1, and cannot affect acting on the horizontal incoming flow acting blade 1, so that when the horizontal incoming flow and the valley wind exist simultaneously, the torques generated by the quasi-vertical incoming flow acting blade 13 and the horizontal incoming flow acting blade 1 are superposed, and a wind wheel shaft obtains a large rotating speed. Because horizontal incoming flow and valley wind exist simultaneously, wind speed and direction real-time recording is needed to be carried out on two kinds of wind through the first anemorumbometer 5 and the second anemorumbometer 6 respectively, recorded information is timely fed back to a variable-pitch processing unit of the horizontal incoming flow acting blade 1 and a variable-pitch processing unit of the quasi-vertical incoming flow acting blade, the two units are matched with each other, the maximum wind energy is obtained as far as possible, meanwhile, the quasi-vertical incoming flow acting blade 13 also has safety problems, and collision with the tower barrel 4 in the variable-pitch process is prevented.
Because the wind turbine does not work basically within 30% of the horizontal inflow action blade close to the blade root, the pseudo-vertical inflow action blade 13 is added within 30% of the horizontal inflow action blade 1 close to the blade root to capture the valley wind. In addition, in order to capture valley wind to the maximum extent and maximize the energy conversion efficiency of the wind turbine, a second variable pitch device is installed at the joint of the blade 13 under the action of the quasi-vertical incoming flow, and two wind speed and direction instrument devices are installed at the tail of the engine room 8 and used for monitoring the flow speed and the flow direction of the horizontal and quasi-vertical incoming flows and providing a guiding effect for blade variable pitch. By the design, the mountain valley wind can be efficiently captured, and the collision between the horizontal incoming flow blades and the tower barrel when the blades are driven to rotate under the action of the quasi-vertical incoming flow by the variable pitch of the blades can be avoided.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The power-increasing wind turbine suitable for valley wind is characterized by comprising a tower barrel (4) and a plurality of horizontal incoming flow acting blades (1), wherein the top of the tower barrel (4) is provided with a cabin (8), the input end of the cabin (8) is connected with a wind wheel shaft, a generator is arranged in the cabin (8) and used for converting mechanical energy transmitted by the wind wheel shaft into electric energy, the wind wheel shaft is connected with a hub (9), the hub (9) is connected with the horizontal incoming flow acting blades (1), and the plurality of horizontal incoming flow acting blades (1) are arrayed in the circumferential direction of the hub (9);
a plurality of quasi-vertical incoming flow acting blades (13) are arranged on a circular array in the rotating direction of the hub (9), the quasi-vertical incoming flow acting blades (13) are bionic wing profiles, the rear edges of the quasi-vertical incoming flow acting blades (13) are connected with the horizontal incoming flow acting blades (1), and the windward side of the quasi-vertical incoming flow acting blades (13) faces towards the direction of the blade root of the horizontal incoming flow acting blades (1);
the unfolding direction of the horizontal incoming flow action blade (1) is taken as a reference, the structures of the quasi-vertical incoming flow action blades (13) on the same circle diameter are the same, the chord lengths of the airfoil sections of the cross sections are the same, and the chord lengths of the airfoil sections of the quasi-vertical incoming flow action blades (13) are gradually reduced from the blade tip of the horizontal incoming flow action blade (1) to the blade root.
2. The power-increasing wind turbine suitable for valley wind as claimed in claim 1, characterized in that the pseudo-vertical inflow effect blade (13) is arranged close to the root of the horizontal inflow effect blade (1), and is operated from the root of the horizontal inflow effect blade (1), and the pseudo-vertical inflow effect blade (13) is located within 30% of the total length of the horizontal inflow effect blade (1).
3. The work-increasing wind turbine suitable for mountain valley wind according to claim 1, wherein the quasi-vertical incoming flow acting blade (13) comprises a first vertical blade (2) and a second vertical blade (3), the airfoil chord length of the first vertical blade (2) is C1 ═ 2.5-3 ═ X1, and the airfoil chord length of the second vertical blade (3) is C2 ═ 2.1-2.8 ═ X2, wherein: c1 is the airfoil chord length of the first vertical blade (2), X1 is the airfoil chord length of the joint of the first vertical blade (2) and the horizontal inflow action blade (1), C2 is the airfoil chord length of the second vertical blade (3), and X2 is the airfoil chord length of the joint of the second vertical blade (3) and the horizontal inflow action blade (1).
4. The power-increasing wind turbine suitable for valley wind according to claim 3, characterized in that the length of the first vertical blade (2) is as follows: l1 is (3.2-4) X1, and the length of the second vertical blade is: l2 ═ 3.5 to 4.6X 2.
5. The power-increasing wind turbine suitable for valley wind according to claim 3, characterized in that the distance between the first vertical blade (2) and the root of the blade (1) acted by the horizontal incoming flow is as follows: h2 is (0.3-0.26) H, and the distance between the second vertical blade (3) and the blade root of the horizontal incoming flow acting blade (1) is as follows: h1 ═ 0.15 to 0.22 × H; in the formula: h is the total length of the horizontal inflow acting blade (1).
6. The power-increasing wind turbine applicable to valley wind according to claim 1, wherein a first anemorumbometer (5) is connected to the top of the nacelle (8), the first anemorumbometer (5) is perpendicular to horizontal incoming wind, a second anemorumbometer (6) is further connected to the nacelle (8), the second anemorumbometer (6) is perpendicular to the first anemorumbometer (5), the first anemorumbometer (5) is used for monitoring the wind speed and the wind direction of the horizontal incoming wind, and the second anemorumbometer (6) is used for monitoring the wind speed and the wind direction of the valley wind.
7. The power-increasing wind turbine suitable for valley wind of claim 6, wherein the blade root of the horizontal inflow action blade (1) is connected with the hub (9), the hub (9) is provided with a first pitch control device, the first pitch control device is located at the blade root of the horizontal inflow action blade (1), the first pitch control device is used for controlling the horizontal inflow action blade (1) to change the pitch, the cabin (8) is also provided with a pitch control unit, the quasi-vertical inflow action blade (13) is provided with a second pitch control device (7), the second pitch control device (7) is located at the joint of the quasi-vertical inflow action blade (13) and the horizontal inflow action blade (1), and the second pitch control device (7) is used for controlling the quasi-vertical inflow action blade (13) to change the pitch;
the first anemorumbometer (5) and the second anemorumbometer (6) are further used for transmitting the wind speed and the wind direction of horizontal incoming wind and the wind speed and the wind direction of valley wind to a variable-pitch processing unit in the engine room (8) respectively, and the variable-pitch processing unit is further used for controlling a first variable-pitch device and a second variable-pitch device (7) respectively according to data transmitted by the first anemorumbometer (5) and the second anemorumbometer (6).
8. The power-increasing wind turbine suitable for the valley wind as claimed in claim 1, wherein the spacing distance between the adjacent quasi-vertical incoming flow acting blades (13) is the same.
9. The power generation method of the power-increasing wind turbine suitable for the valley wind as claimed in any one of claims 1 to 8, wherein a horizontal incoming flow acting blade (1) is subjected to pitch variation through a first pitch variation device, a second pitch variation device (7) is arranged on the horizontal incoming flow acting blade (1) and a quasi-vertical incoming flow acting blade (13), the second pitch variation device (7) is positioned at the joint of the quasi-vertical incoming flow acting blade (13) and the horizontal incoming flow acting blade (1), a pitch variation processing unit is further arranged in the nacelle (8), and the pitch variation processing unit is used for respectively driving the first pitch variation device and the second pitch variation device (7) to control the horizontal incoming flow acting blade (1) and the quasi-vertical incoming flow acting blade (13) to perform pitch variation; the method comprises the following steps:
when horizontal incoming wind blows to the power-increasing wind turbine (12), the first variable pitch device controls the horizontal incoming flow acting blade (1) to be opened, the second variable pitch device (7) controls the quasi-vertical incoming flow acting blade (13) to be feathered, the quasi-vertical incoming flow acting blade (13) does not work, the horizontal incoming wind acts on the horizontal incoming flow acting blade (1), the horizontal incoming flow acting blade (1) rotates to drive the wind wheel shaft to rotate, the wind wheel shaft is connected with the gear box, the gear box is connected with the generator, the generator converts mechanical energy transmitted by the wind wheel shaft into electric energy, and power generation of the power-increasing wind turbine (12) is completed;
when valley wind blows to the power-increasing wind turbine (12), the first variable pitch device controls the horizontal incoming flow acting blades (1) to feather, the second variable pitch device (7) controls the quasi-vertical incoming flow acting blades (13) to feather, the horizontal incoming flow acting blades (1) do not work, the valley wind acts on the quasi-vertical incoming flow acting blades (13), the quasi-vertical incoming flow acting blades (13) rotate to drive the wind wheel shaft to rotate, the wind wheel shaft transmits mechanical energy to the generator, the generator converts the mechanical energy transmitted by the wind wheel shaft into electric energy, and the power generation of the power-increasing wind turbine (12) is completed;
when horizontal incoming wind blows to the power-increasing wind turbine and valley wind blows to the power-increasing wind turbine (12), the first variable pitch device controls the horizontal incoming wind to act on the blades (1) to open the propeller, the second variable pitch device (7) controls the pseudo-vertical incoming wind to act on the blades (13) to open the propeller, the horizontal incoming wind acts on the horizontal incoming wind acting blades (1), the valley wind acts on the pseudo-vertical incoming wind acting blades (13), the torques of the pseudo-vertical incoming wind acting blades (13) and the horizontal incoming wind acting blades (1) are superposed to drive the wind wheel shaft to rotate, the wind wheel shaft transmits mechanical energy to the generator, and the generator converts the mechanical energy transmitted by the wind wheel shaft into electric energy to complete the power generation of the power-increasing wind turbine.
10. The power generation method of the power-increasing wind turbine suitable for the valley wind as claimed in claim 9, wherein when the second variable pitch device (7) adjusts the quasi-vertical inflow acting blade (13), the quasi-vertical inflow acting blade (13) is always perpendicular to the valley wind.
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