CN111520281A - Variable pitch air door mechanism for vertical axis wind power generation device - Google Patents
Variable pitch air door mechanism for vertical axis wind power generation device Download PDFInfo
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- CN111520281A CN111520281A CN202010209708.3A CN202010209708A CN111520281A CN 111520281 A CN111520281 A CN 111520281A CN 202010209708 A CN202010209708 A CN 202010209708A CN 111520281 A CN111520281 A CN 111520281A
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- air door
- stator
- variable pitch
- sanitary belt
- vertical axis
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- 230000007246 mechanism Effects 0.000 title claims abstract description 79
- 238000010248 power generation Methods 0.000 title claims abstract description 67
- 230000005540 biological transmission Effects 0.000 claims description 15
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- 229910000831 Steel Inorganic materials 0.000 claims description 6
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- 238000009826 distribution Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000011161 development Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
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- 229920002635 polyurethane Polymers 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- -1 but not limited to Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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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
- 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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor the axis being vertical
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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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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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
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Abstract
The invention relates to the technical field of new energy, and discloses a variable pitch air door mechanism for a vertical axis wind power generation device, which comprises a variable pitch air door mechanism, an air door upper sanitary belt, an air door lower sanitary belt and an air door panel; become oar air door mechanism and be located the periphery of movable vane rotor and stator, have a plurality of moving blades on the movable vane rotor, have the guide blade on the stator, become oar air door mechanism and be equipped with the air door panel, a plurality of wind section curb plates of gathering arrange the outside at the air door panel, moving blade, guide blade, air door panel and wind section curb plate one-to-one setting of gathering. The air door panels are distributed in an annular mode and are rotatably arranged between the air door upper sanitary belt and the air door lower sanitary belt, and the adjacent two air door panels and the air door upper sanitary belt and the air door lower sanitary belt form a tapered channel. The variable-pitch air door mechanism can complete variable pitch adjustment of the vertical axis wind power generation device, effectively and safely adjust the power of the wind driven generator according to set working conditions, and plays a role in protecting the vertical axis wind power generation device in extreme weather conditions such as storm.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a variable pitch air door mechanism for a vertical axis wind power generation device.
Background
With the global climate and energy issues becoming more prominent, wind power has become a new source of attention worldwide. The wind energy is a green renewable new energy source, has huge energy, is widely distributed, can be taken on site, does not need transportation, and is convenient to use. The utilization of wind energy has been developed from the first wind lifting, sail sailing and wind mill flour to today's wind power generation.
With the innovative development of low wind speed technology, low wind speed areas which previously had no development value are becoming hot soil for the wind power industry. At present, the reserves of wind resources with wind speeds of more than 5m/s and reaching economic development values in the central east and south regions are close to 9 hundred million KW. And in order to have economic development value in a low wind speed area, the wind energy density acting on the wind wheel blade must reach 0.08-0.17 kw/m 2. However, the annual average wind speed in the central east and south regions of China is 5.0-6.5m/s, that is, the wind energy density is lower than 0.08kw/m2, which cannot be directly utilized.
Disclosure of Invention
In view of the above technical defects and application requirements, embodiments of the present invention provide a pitch-controlled damper mechanism for a vertical-axis wind turbine, which not only functions to adjust the amount of wind entering the vertical-axis wind turbine and improve the wind energy density, but also functions to change the pitch, change the attack angle of wind current entering the rotor blade rotor, and integrate the functions of the pitch-controlled damper, thereby effectively adjusting the power and the optimal operating condition of the wind turbine. The single-machine power of the vertical axis wind generating set is greatly and effectively improved and can reach more than 30 MW. The wind turbine is incomparable to a three-blade horizontal shaft wind turbine and is a technical significant breakthrough of a vertical shaft wind turbine.
In order to solve the above problems, the present invention provides a pitch control damper mechanism for a vertical axis wind power generation apparatus, comprising: the air collecting section side plate, the air door upper sanitary belt, the air door lower sanitary belt and the air door panel;
the variable pitch air door mechanism is positioned at the periphery of a movable blade rotor and a guide blade stator of the vertical axis wind power generation device, the movable blade rotor is provided with a plurality of movable blades, the guide blade stator is provided with a plurality of guide blades, the variable pitch air door mechanism is provided with a plurality of air door panels, a plurality of air collecting section side plates are arranged at the outer sides of the air door panels, and the movable blades, the guide blades, the air door panels and the air collecting section side plates are arranged in a one-to-one correspondence manner;
the air door panels are distributed in an annular mode and are rotatably arranged between the air door upper sanitary belt and the air door lower sanitary belt, and the adjacent two air door panels and the air door upper sanitary belt and the air door lower sanitary belt form a tapered channel.
Further, the pitch damper mechanism further includes: the electric actuator, the guide vane stator upper sanitary belt and the guide vane stator lower sanitary belt;
the electric actuator is arranged on the air door upper sanitary belt and is used for adjusting the air quantity of the incoming air flow entering the moving blades; or the electric actuator is arranged on the stator upper sanitary belt of the guide vane and is used for changing the attack angle entering the moving blade;
wherein, the stator of stator is the annular distribution and is in stator of stator upper sanitary belt with between the stator of stator lower sanitary belt, the stator of stator with stator of stator upper sanitary belt with stator of stator lower sanitary belt encloses jointly and establishes the tapered passageway that forms.
Further, the pitch damper mechanism further includes: an upper sanitation belt of a side plate of the wind collecting section and a lower sanitation belt of the side plate of the wind collecting section; the wind collecting section side plates are annularly arranged between the wind collecting section side plate upper sanitary belt and the wind collecting section side plate lower sanitary belt, and two adjacent wind collecting section side plates, the wind collecting section side plate upper sanitary belt and the wind collecting section side plate lower sanitary belt are jointly enclosed to form a tapered channel.
Furthermore, when the air door panel is fully opened, tapered channels formed by the air door panel, the guide vane stator and the wind collecting section side plate are communicated, so that the requirement of variable pitch wind collection of the vertical axis wind power generation device is met; when the air door panel is closed, the variable pitch air door mechanism forms a cylindrical tower body, and the air door panel seals the movable blade rotor, the guide blade stator and the core part of the vertical axis wind power generation device, so that the whole vertical axis wind power generation device is prevented from being impacted by strong wind power.
Furthermore, the vertical axis wind power generation device gradually forms a layered tower structure along with the height, and the variable pitch air door mechanism forms a multilayer variable pitch air door tower structure along with the height of the tower structure in cooperation with the vertical axis wind power generation device, so that the effects of layered adjustment and protection of the whole vertical axis wind power generation device are achieved.
Further, if the electric actuator is installed on the air door upper sanitary belt, the variable pitch air door mechanism further comprises:
the variable-pitch air door comprises a variable-pitch air door shaft, a chain wheel, a transmission chain, an upper bearing and a lower bearing; the electric actuator, the variable pitch air door shaft, the chain wheel, the transmission chain, the upper bearing and the lower bearing form a control transmission system of the variable pitch air door.
Further, the damper panel includes: the air door comprises an air door body framework, a variable pitch air door shaft, an air door reinforcing rib plate, an air door back arc skin, an air door inner arc skin and reinforcing fillers;
the air door body framework is made of C-shaped steel; the variable-pitch air door shaft is made of a seamless steel pipe; the air door reinforcing rib plate is formed by welding a hot rolled plate with the thickness of 3mm-16mm or a cold rolled plate with the thickness of 3mm-16mm, and the reinforcing filler is filled in an inner cavity; the reinforcing filler is a light high-strength filling material, the air door inner arc skin and the air door back arc skin are made of glass fiber reinforced plastics, and the thicknesses of the skins corresponding to the air door inner arc skin and the air door back arc skin are 1-10 mm.
Furthermore, the air door panel is formed by sections along the height direction, each section is manufactured separately by sections, and the sections are connected through the air door reinforcing rib plate.
Furthermore, the air door upper guard belt and the air door lower guard belt are connected with the integral tower of the vertical shaft wind power generation device, so that the variable pitch air door mechanism and the vertical shaft wind power generation device are integrated.
The variable pitch air door mechanism for the vertical axis wind power generation device is simple in structure and convenient and fast to operate, the variable pitch air door mechanism is formed by the multiple variable pitch air doors on the periphery of the vertical axis wind power generation device, the variable pitch air door mechanism surrounds the periphery of the vertical axis wind power generation device, and the control system sends an instruction along with the condition of incoming wind power to complete variable pitch adjustment of the vertical axis wind power generation device, so that the vertical axis wind power generation device effectively and safely adjusts the power of the wind power generator according to a set working condition, and the vertical axis wind power generation device plays a role in protecting the wind power generation device in the extreme weather state of storm wind and the like. The variable pitch air door adopts a special structural design, so that the air door body can resist the impact of 12-grade hurricanes, and the 25-year service life of the variable pitch air door mechanism is effectively maintained. The vertical axis wind turbine is indispensable equipment of a vertical axis wind turbine and has a plurality of special functions.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram of a pitch damper mechanism according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view at B of FIG. 1;
FIG. 3 is an enlarged schematic view at C of FIG. 1;
FIG. 4 is a cross-sectional view taken at A in FIG. 1;
FIG. 5 is a schematic view of the adjustment of a pitch damper mechanism provided by an embodiment of the present invention;
FIG. 6 is a schematic structural view of a fully opened pitch damper mechanism according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a pitch damper mechanism provided in an embodiment of the present invention after being fully closed;
description of reference numerals: 1. an electric actuator; 2. a sanitation belt is arranged on the air door; 3. a sprocket; 4. an upper bearing; 5. A lower bearing; 6. a variable pitch damper shaft; 7. a reinforcing rib plate of the air door; 8. a lower guard belt of an air door; 9. a damper panel; 10. a drive chain; 11. covering the back arc of the air door; 12. a reinforcing filler; 13. covering the inner arc of the air door; 14. The air door body skeleton.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An embodiment of the present invention provides a variable pitch damper mechanism of a vertical axis wind turbine, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7, the variable pitch damper mechanism of the vertical axis wind turbine includes: the side plate of the air collecting section, the upper air door sanitary belt 2, the lower air door sanitary belt 8 and the air door panel 9; become oar air door mechanism and be located the periphery of vertical axis wind power generation set's movable vane rotor and stator, have a plurality of moving blades on the movable vane rotor, have a plurality of guide blades on the stator, become oar air door mechanism and be equipped with a plurality of air door panels 9, a plurality of wind section curb plates of gathering arrange in the outside of air door panel 9, moving blade, guide blade, air door panel 9 and wind section curb plate one-to-one setting of gathering. When the incoming wind passes through the tapered channel, the wind energy density of the incoming wind is increased.
Wherein, air door panel 9 is the annular distribution, rotationally arranges between air door upper band 2 and air door lower band 8, and two adjacent air door panels 9 and air door upper band 2 and air door lower band 8 form the tapered passageway.
Wherein, become oar air door mechanism still includes: the electric actuator 1, a guide vane stator upper sanitary belt and a guide vane stator lower sanitary belt. The electric actuator 1 is arranged on the air door upper sanitary belt and is used for adjusting the air quantity of the incoming air flow entering the movable vane; or the electric actuator 1 is arranged on a guide vane stator upper sanitary belt and is used for changing the attack angle entering the moving blade. The stator of the guide vane is annularly distributed between the upper sanitary belt and the lower sanitary belt of the stator of the guide vane, and the stator of the guide vane, the upper sanitary belt and the lower sanitary belt of the stator of the guide vane jointly enclose to form a tapered channel.
Wherein, become oar air door mechanism still includes: an upper sanitation belt of a side plate of the wind collecting section and a lower sanitation belt of the side plate of the wind collecting section; the wind collecting section side plates are annularly arranged between the wind collecting section side plate upper sanitary belt and the wind collecting section side plate lower sanitary belt, and two adjacent wind collecting section side plates and the wind collecting section side plate upper sanitary belt and the wind collecting section side plate lower sanitary belt are jointly enclosed to form a tapered channel.
When the air door panel 9 is fully opened, the tapered passages formed by the air door panel 9, the guide vane stator and the air collecting section side plate are communicated, and the incoming air is accelerated when passing through the tapered passages formed by the air door panel, so that the wind energy density of the incoming air is improved. The energy density of the wind flow is greatly improved by matching the tapered channel formed by the stator of the guide vane and the tapered channel formed by the side plate of the wind collecting section, so that the requirement of variable-pitch wind collection of the vertical axis wind power generation device is met, and the whole machine power of the vertical axis wind power generation device is correspondingly improved. When the air door panel 9 is closed, the variable pitch air door mechanism forms a cylindrical tower body, and the air door panel 9 seals the movable blade rotor, the guide blade stator and the core components of the vertical axis wind power generation device, so that the whole vertical axis wind power generation device is prevented from being impacted by strong wind power. The variable pitch air door mechanism effectively adjusts the power and the optimal operation condition of the corresponding wind power generation mechanism. Can reach more than 30 MW. The three-blade horizontal axis wind turbine is incomparable and is a technical significant breakthrough of the vertical axis wind turbine.
The vertical axis wind power generation device gradually forms a layered tower structure along with the height, and the variable pitch air door mechanism forms a multilayer variable pitch air door tower structure along with the height of the tower structure and is matched with the vertical axis wind power generation device, so that the layered adjustment and the protection of the whole vertical axis wind power generation device can be achieved.
If electric actuator 1 installs on air door upper sanitary belt 2, then become oar air door mechanism still includes: the variable-pitch air door comprises a variable-pitch air door shaft 6, a chain wheel 3, a transmission chain 10, an upper bearing 4 and a lower bearing 5; the electric actuator 1, a variable pitch air door shaft 6, a chain wheel 3, a transmission chain 10, an upper bearing 4 and a lower bearing 5 form a control transmission system of the variable pitch air door, namely an electric actuating mechanism of the variable pitch air door. An electric actuator 1 can drive a plurality of air door panels 9 to rotate simultaneously, in the same direction and by the same displacement amount through the transmission of a transmission chain 10 so as to regulate the power of the vertical axis wind power generation device.
Wherein, the air door panel includes: the variable-pitch air door comprises an air door body framework 14, a variable-pitch air door shaft 6, an air door reinforcing rib plate 7, an air door back arc skin 11, an air door inner arc skin 13 and reinforcing fillers 12. The air door framework 14 is made of C-shaped steel which is lighter and has better rigidity and strength; the variable pitch air door shaft 6 is made of a high-strength seamless steel pipe; the air door reinforcing rib plate 7 is formed by welding a 3-16 mm hot rolled plate (or a cold rolled plate) in a combined mode, and reinforcing fillers are filled in an inner cavity. Reinforcing filler 12 comprises any lightweight, high strength filler material including, but not limited to, polyurethane fillers. The reinforcing filler 12 is made of polyurethane filler, so that the weight of the air door device is reduced, and the strength of the air door device is further enhanced. The strength and rigidity of the air door device can resist 12 grades of hurricanes after a wind blowing test of a wind tunnel. Due to the light weight, the drag power of the electric actuator 1 is reduced. The air door inner arc skin 13 and the air door back arc skin 11 are made of glass fiber reinforced plastics, the thickness of the glass fiber reinforced plastics can be determined according to natural conditions such as local wind sand, rainwater, temperature difference and the like, and the thickness is controlled to be 1-10mm generally. The skin can resist erosion of wind, sand and rainwater, greatly improves the strength of the wind door body, and is particularly more important to be used in offshore wind power so as to ensure the 25-year service life of a corresponding vertical axis wind power generation device.
Specifically, the pitch-variable air door is formed by connecting air door reinforcing rib plates 7 on an air door panel 9 in series through a pitch-variable air door shaft 6, and is connected with an upper bearing 4 and a lower bearing 5 through the pitch-variable air door shaft 6. The upper bearing 4 and the lower bearing 5 are matched to enable the variable pitch air door to rotate freely, so that the variable pitch air door can execute adjustment instruction quickly and conveniently. The upper bearing 4 is located on the air door upper sanitary belt, the air door upper sanitary belt 2 is connected with an air door upper support body of a fixed tower frame of the vertical axis wind power generation device, the lower bearing 5 is suspended on a lower surrounding belt of a variable pitch air door of the variable pitch air door, and the air door lower sanitary belt 8 is connected with an air door lower support body of the vertical axis wind power generation device tower frame.
In the embodiment, the air door panel 9 is formed by sections along the height direction, the size of each section meets the standard of road transportation of China and China, each section is manufactured separately by sections, and the sections are connected through the air door reinforcing rib plates 7. The large-piece road transportation is convenient, and the large-piece road transportation can be assembled on the ground or on a rack during field installation. And the verticality deviation of the air door panel 9 is less than one ten-thousandth after the assembly. The air door panel 9 can be assembled on the ground and hoisted to the position of the air door panel, and can also be hoisted in sections and assembled on the tower.
In order to improve the single-machine power of the vertical shaft wind power generation device, the height of the vertical shaft wind power generation device can be improved, and a multi-layer tower body structure is formed. The air door upper guard belt 2 and the air door lower guard belt 8 are connected with an integral tower of the vertical shaft wind power generation device, so that the variable pitch air door mechanism and the vertical shaft wind power generation device form a whole body. The whole tower of the unit supports the whole safe and reliable operation of the variable pitch air door mechanism. Because the shear performance of the incoming wind flow, the wind speed along the tower height is greatly changed, and the command issued by the adjusting control system can be determined according to the wind flow conditions of each layer, so that the layered efficient and safe control of the air door of each layer is realized, and the control mode is a control mode which cannot be achieved by a three-blade horizontal shaft.
When the incoming wind strength is higher and exceeds the cut-out wind speed of the vertical axis wind power generation device, the position state of the variable pitch air door can completely destroy the limit range of the available attack angle of the wind power entering the rotor blade rotor, so that the vertical axis wind power generation device is in a low-power operation state, and the self power utilization of the wind power generator set is maintained. When the incoming wind speed reaches the maximum wind speed that vertical axis wind generating set can bear, the electric actuator drives through drive chain 10, closes air door panel 9 totally, makes wind generating set stop completely to make the unit running state encourage the destructive power of wind current, start the energy storage battery device of generating set and maintain the fan power consumption simultaneously. Just after the air door body is completely closed, the air door reinforcing rib plate 7, the variable pitch air door shaft 6 and the like are arranged outside the formed cylinder, so that the wind current winds the variable pitch air door, the vortex excitation phenomenon is avoided at the moment, and the variable pitch air door is one of core technologies of a vertical axis wind power generation device. And the working state dragger of the variable pitch air door is an electric actuating mechanism of the variable pitch air door.
The electric actuating mechanism of the variable pitch air door comprises an electric actuator 1, a variable pitch air door shaft 6, a chain wheel 3, a transmission chain 10, an upper bearing 4 and a lower bearing 5, wherein the electric actuator 1 drags five or more variable pitch air doors through the transmission of the transmission chain 10 and the chain wheel 3 to rotate in the same direction and the same displacement, the arrangement and execution sequence of the mode greatly reduces the number of sensors and actuators of a control system, and reduces the operation and maintenance amount and the manufacturing cost of the whole machine. The method provides powerful support for the evaluation of the output electric quantity of the vertical axis wind turbine generator set. Two adjacent pitch-controlled air doors of the pitch-controlled air door mechanism, the upper air door sanitary belt 2 and the lower air door sanitary belt 8 form a tapered passage, incoming flow passes through the tapered passage to improve the energy density of the wind flow, and the power of the wind driven generator is improved accordingly.
Because the wind driven generator is the maximum generating capacity which is constantly sought, the variable pitch air door mechanism is opened only by operating in a safe wind speed area. The adjacent air door panels 9 form a tapered passage, so that the energy density of the air flow is improved by the variable-pitch air door mechanism. The whole vertical wind power generation device of the variable pitch air door mechanism is arranged on the periphery of a moving blade, incoming wind enters a moving blade rotor flow channel through the variable pitch air door mechanism, an electric actuator 1 rotates after receiving an instruction sent by an automatic control system, a variable pitch air door shaft 6 rotates synchronously to drive an air door panel 9 to rotate around a self shaft, two adjacent air door panels 9 rotate synchronously, the shape of a tapered flow channel formed by two adjacent air door panels 9 is changed, the cross section area of the air channel and the flow direction of wind flow are changed, the air intake of the air channel is changed inevitably, and the power of the wind power generation mechanism is changed. If the wind power is continuously increased, the air door panel 9 also continuously moves and displaces towards the closing direction of the air channel, so that the direction of the airflow is changed gradually, the air volume entering the movable blades is changed, even the air volume is separated from the limit value of the attack angle, and at the moment, the power of the wind power generation mechanism is rapidly reduced, and the wind power generation mechanism enters a shutdown state. When the variable-pitch air door mechanism encounters a 12-stage hurricane, the wind power generation mechanism is designed to close all the air doors, so that the whole wind power generation mechanism forms a cylinder, the destructive force of the incoming wind flow bypassing the cylinder is greatly weakened, the whole unit is protected from being attacked by the hurricane, the cylinder formed by the whole unit can enable the wind power generation mechanism to be lower than the maximum wind speed by 38m/s for 10 minutes, and the maximum wind speed by 53m/s for 3 seconds. When the wind speed is gradually reduced, the variable pitch air door mechanism gradually moves towards the opening direction until the variable pitch air door mechanism is fully opened, and the wind power generation mechanism can automatically put into operation. And outputting corresponding power according to the corresponding wind speed of the photo, and merging the power into a power grid for operation. Under the instruction of an automatic control system, the variable pitch air door mechanism is driven by an electric actuator through a transmission chain 10 to drive a plurality of air door panels 9 to rotate, and the combined action of simultaneous, equidirectional and equidistance of air doors is generated, so that the variable pitch effect is achieved, and the variable pitch air door mechanism is one of indispensable key devices of a vertical axis wind power generation mechanism.
In summary, the variable pitch air door mechanism for the vertical axis wind power generation device provided by the embodiment of the invention has a simple structure and is convenient to operate, the variable pitch air door mechanism is formed by a plurality of variable pitch air doors on the periphery of the vertical axis wind power generation device, the variable pitch air door mechanism surrounds the periphery of the vertical axis wind power generation device, and along with the condition of incoming wind force, the control system sends an instruction to complete the variable pitch adjustment of the vertical axis wind power generation device, so that the vertical axis wind power generation device effectively and safely adjusts the power of the wind power generation device according to a set working condition, and plays a role in protecting the wind power generation device in the extreme weather state such as storm wind. The variable pitch air door adopts a special structural design, so that the air door body can resist the impact of 12-grade hurricanes, and the 25-year service life of the variable pitch air door mechanism is effectively maintained. The vertical axis wind turbine is indispensable equipment of a vertical axis wind turbine and has a plurality of special functions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A pitch damper mechanism for a vertical axis wind turbine, comprising:
the air collecting section side plate, the air door upper sanitary belt, the air door lower sanitary belt and the air door panel;
the variable pitch air door mechanism is positioned at the periphery of a movable blade rotor and a guide blade stator of the vertical axis wind power generation device, the movable blade rotor is provided with a plurality of movable blades, the guide blade stator is provided with a plurality of guide blades, the variable pitch air door mechanism is provided with a plurality of air door panels, a plurality of air collecting section side plates are arranged at the outer sides of the air door panels, and the movable blades, the guide blades, the air door panels and the air collecting section side plates are arranged in a one-to-one correspondence manner;
the air door panels are distributed in an annular mode and are rotatably arranged between the air door upper sanitary belt and the air door lower sanitary belt, and the adjacent two air door panels and the air door upper sanitary belt and the air door lower sanitary belt form a tapered channel.
2. The pitch damper mechanism of claim 1, further comprising:
the electric actuator, the guide vane stator upper sanitary belt and the guide vane stator lower sanitary belt;
the electric actuator is arranged on the air door upper sanitary belt and is used for adjusting the air quantity of the incoming air flow entering the moving blades; or the electric actuator is arranged on a guide vane stator upper sanitary belt and is used for changing the attack angle entering the moving blade;
wherein, the stator of stator is the annular distribution and is in stator of stator upper sanitary belt with between the stator of stator lower sanitary belt, the stator of stator with stator of stator upper sanitary belt with stator of stator lower sanitary belt encloses jointly and establishes and forms another tapered passageway.
3. The pitch damper mechanism of claim 2, further comprising:
an upper sanitation belt of a side plate of the wind collecting section and a lower sanitation belt of the side plate of the wind collecting section;
the wind collecting section side plates are annularly arranged between the wind collecting section side plate upper sanitary belt and the wind collecting section side plate lower sanitary belt, and two adjacent wind collecting section side plates, the wind collecting section side plate upper sanitary belt and the wind collecting section side plate lower sanitary belt are jointly enclosed to form a tapered channel.
4. The variable pitch air door mechanism according to claim 3, wherein when the air door panel is fully opened, tapered passages formed by the air door panel, the guide vane stator and the air collecting section side plate are communicated with each other so as to meet the variable pitch air collecting requirement of the vertical axis wind power generation device; when the air door panel is closed, the variable pitch air door mechanism forms a cylindrical tower body, and the air door panel seals the movable blade rotor, the guide blade stator and the core part of the vertical axis wind power generation device, so that the whole vertical axis wind power generation device is prevented from being impacted by strong wind power.
5. The variable pitch air door mechanism according to claim 4, wherein the vertical axis wind power generation device gradually forms a layered tower structure along with the height, and the variable pitch air door mechanism forms a multi-layer variable pitch air door tower structure along with the height of the tower structure by matching with the vertical axis wind power generation device, so that the effects of layered adjustment and protection of the whole vertical axis wind power generation device are achieved.
6. The variable pitch damper mechanism of claim 2, wherein if the electric actuator is mounted on the damper upper sanitary band, the variable pitch damper mechanism further comprises:
the variable-pitch air door comprises a variable-pitch air door shaft, a chain wheel, a transmission chain, an upper bearing and a lower bearing; the electric actuator, the variable pitch air door shaft, the chain wheel, the transmission chain, the upper bearing and the lower bearing form a control transmission system of the variable pitch air door.
7. The pitch damper mechanism of claim 2, wherein the damper panel comprises: the air door comprises an air door body framework, a variable pitch air door shaft, an air door reinforcing rib plate, an air door back arc skin, an air door inner arc skin and reinforcing fillers;
the air door body framework is made of C-shaped steel; the variable-pitch air door shaft is made of a seamless steel pipe; the reinforcing rib plate of the air door is formed by welding a hot rolled plate combination with a thickness of 3mm-16mm or by welding a cold rolled plate combination, and the inner cavity is filled with the reinforcing filler; the reinforcing filler is a light high-strength filling material, the air door inner arc skin and the air door back arc skin are made of glass fiber reinforced plastics, and the thicknesses of the skins corresponding to the air door inner arc skin and the air door back arc skin are 1-10 mm.
8. The variable pitch damper mechanism according to claim 7, wherein the damper panel is formed by sections in the height direction, each section is manufactured separately in sections, and the sections are connected through the damper reinforcing rib plate.
9. The variable pitch damper mechanism according to claim 1, wherein the damper upper guard band and the damper lower guard band are connected to a unitary tower of the vertical axis wind turbine such that the variable pitch damper mechanism and the vertical axis wind turbine are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010209708.3A CN111520281A (en) | 2020-03-23 | 2020-03-23 | Variable pitch air door mechanism for vertical axis wind power generation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010209708.3A CN111520281A (en) | 2020-03-23 | 2020-03-23 | Variable pitch air door mechanism for vertical axis wind power generation device |
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| CN111520281A true CN111520281A (en) | 2020-08-11 |
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| CN202010209708.3A Pending CN111520281A (en) | 2020-03-23 | 2020-03-23 | Variable pitch air door mechanism for vertical axis wind power generation device |
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| CN112065657A (en) * | 2020-08-24 | 2020-12-11 | 河南恒聚新能源设备有限公司 | Turbine stator structure and vertical axis turbine wind power generation device |
| CN112065658A (en) * | 2020-08-24 | 2020-12-11 | 河南恒聚新能源设备有限公司 | Moving blade and vertical axis turbine wind power generation device |
| CN112342558A (en) * | 2020-09-22 | 2021-02-09 | 河南恒聚新能源设备有限公司 | Device for producing hydrogen by utilizing wind power photo-thermal photovoltaic renewable energy and application system |
| CN112383084A (en) * | 2020-09-22 | 2021-02-19 | 河南恒聚新能源设备有限公司 | Device for producing hydrogen by utilizing renewable energy and application system |
| CN113085622A (en) * | 2021-03-15 | 2021-07-09 | 河南恒聚新能源设备有限公司 | Wind, light, electricity, hydrogen storage integrated charging and hydrogen charging system for electric automobile on highway |
| WO2024040683A1 (en) * | 2022-08-26 | 2024-02-29 | 浙江龙耀风电新能源科技有限公司 | Fan vertical tower power generation system and power generation control method applicable to all environments |
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Application publication date: 20200811 |