CN115355132A - Offshore floating type secondary power generation spiral fan and power generation method thereof - Google Patents
Offshore floating type secondary power generation spiral fan and power generation method thereof Download PDFInfo
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- CN115355132A CN115355132A CN202211018202.XA CN202211018202A CN115355132A CN 115355132 A CN115355132 A CN 115355132A CN 202211018202 A CN202211018202 A CN 202211018202A CN 115355132 A CN115355132 A CN 115355132A
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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
- F03D1/04—Wind motors with rotation axis substantially parallel to the air flow entering the rotor having stationary wind-guiding means, e.g. with shrouds or channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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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
- F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor having a plurality of rotors
- F03D1/025—Wind motors with rotation axis substantially parallel to the air flow entering the rotor having a plurality of rotors coaxially arranged
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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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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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
- Y02E10/727—Offshore wind turbines
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Abstract
The invention relates to a marine floating type secondary power generation spiral fan and a power generation method thereof, wherein the marine floating type secondary power generation spiral fan comprises a spiral wind collector, wherein the lower part of the spiral wind collector is provided with wind inlets at intervals along the circumferential direction, the center of the top of the spiral wind collector is provided with a wind outlet, and a fan barrel is arranged at the wind outlet in a penetrating way; a middle shaft is fixedly arranged on the upper and lower through spiral wind collectors, a plurality of groups of fans are axially and rotationally arranged on the middle shaft which extends upwards into the fan barrel at intervals, and a power generation mechanism is arranged between each fan and the middle shaft which rotates relatively; a floating foundation is rotatably arranged on a central shaft extending downwards out of the spiral wind collector, and another group of power generation mechanisms are arranged between the inside of the floating foundation and the relatively rotating central shaft; the spiral wind collector concentrates and changes the direction of wind blown in orderly or disorderly in the circumferential direction to the fan barrel, so that a fan in the fan barrel rotates to generate power, meanwhile, the torque applied in the wind collecting process of the spiral wind collector is slowly released and absorbed through a central shaft fixedly arranged with the spiral wind collector, and the rotation of the central shaft promotes a power generation mechanism between the central shaft and a floating foundation to generate power, thereby realizing the secondary power generation of a marine floating type.
Description
Technical Field
The invention relates to the technical field of offshore power generation, in particular to a marine floating type secondary power generation spiral fan and a power generation method thereof.
Background
The offshore wind turbine is divided into two types: one is a fixed wind turbine fixed on the shallow sea, and the other is a floating wind turbine floating on the sea.
The offshore fixed type fan is suitable for shallow water depth, usually within 50 meters, due to engineering and economic requirements. The floating type fan in the prior art has high gravity center, heavy weight and high requirement on a floating foundation, and causes huge cost.
On the other hand, the existing offshore wind turbines are all three-blade horizontal-shaft type wind turbines, so that not only is the center of gravity high, but also the price of the blades is very high; in addition, the existing fan is greatly influenced by wind direction and wind speed, and the power generation window period is short. Under the combined effect of such high cost and short power generation window period, the development of wind turbines is greatly limited.
Disclosure of Invention
The marine floating type secondary power generation spiral fan is suitable for uniform or nonuniform wind power generation in all directions, secondary power generation can be carried out simultaneously, the window period of wind power generation is greatly prolonged, and the wind power generation cost is effectively reduced.
The technical scheme adopted by the invention is as follows:
a marine floating type secondary power generation spiral fan comprises a spiral air collector, wherein air inlets are formed in the lower portion of the spiral air collector at intervals along the circumferential direction, an air outlet is formed in the center of the top of the spiral air collector, and an air fan barrel is installed at the position, at the air outlet, of the spiral air collector in a penetrating mode; a middle shaft is fixedly arranged on the upper and lower penetrating spiral wind collectors, a plurality of groups of fans are rotatably arranged on the middle shaft extending upwards into the fan barrel at intervals along the axial direction, and a power generation mechanism is arranged between each fan and the middle shaft rotating relatively; a floating foundation is rotatably arranged on a central shaft extending downwards out of the spiral wind collector, and another group of power generation mechanisms are arranged between the inside of the floating foundation and the central shaft rotating relatively.
As a further improvement of the technical scheme:
a plurality of flow channels are formed in the spiral air collector from an air inlet at the circumferential direction of the lower part to an air outlet at the center of the top part, the sectional area of the air inlet of a single flow channel is larger than that of the air outlet, and air flowing in from the air inlet is guided by the flow channels and then vertically flows out from the air outlet upwards.
The spiral wind collector is of a thin-wall shell structure, and the specific structure of the spiral wind collector is as follows: the wind-guiding baffle plate comprises a base plate, a middle shaft penetrates through the base plate from top to bottom and is fixed relatively, a plurality of groups of baffle plates are installed between the circumferential outer wall surface of the middle shaft and the base plate along the circumferential direction, and adjacent baffle plates are combined with an outer shell plate to form a flow channel for guiding wind to flow.
The partition board comprises an upper horizontal line and a lower horizontal line which form an included angle in space, a vertical line is connected between one end of the upper horizontal line and one end of the lower horizontal line, and a spiral intersecting line is connected between the other end of the upper horizontal line and the other end of the lower horizontal line; the vertical line is axially attached to the outer wall surface of the middle shaft.
The baffle and the shell plate are converged on a spiral intersecting line, an arc line extends from the horizontal line above the top end of the spiral intersecting line as a radius, a converging line extends from the end part of the arc line along the posture of the spiral intersecting line, an opening line is connected with the bottom end of the spiral intersecting line towards the end part of the converging line, and the shell plate corresponding to a single flow channel is formed by the arc line, the spiral intersecting line, the opening line and the converging line.
The number of the partition boards and the number of the outer shell boards are in one-to-one correspondence with the number of the flow channels, the shape of a gathering line on the outer shell board is consistent with that of the upper part of a spiral intersecting line on each partition board and the gathering line on each outer shell board is attached to the upper part of the spiral intersecting line on each partition board, and an opening line on each outer shell board, the lower part of the spiral intersecting line on each adjacent partition board and the combination substrate form an air inlet; the arc lines at the tops of the plurality of shell plates are positioned on the same circumference to jointly form an air outlet, and the edge of the air outlet is connected to the bottom edge of the fan barrel in a penetrating way.
A rotor assembly is fixedly arranged on a middle shaft positioned in the floating foundation, a stator assembly is arranged on the inner wall surface of the floating foundation, and the rotor assembly and the stator assembly are electromagnetically coupled and matched to form the power generation mechanism.
The fan barrel penetrates through the upper part and the lower part, and the air flowing vertically upwards from the air outlet of the lower spiral air collector drives the fan in the fan barrel to rotate; and a power generation mechanism which is matched with the fan in an electromagnetic coupling mode is arranged between the fan and the middle shaft, and the relative rotation between the fan and the middle shaft enables the power generation mechanism between the fan and the middle shaft to generate power.
Mooring members extend outwards along the circumferential direction on the outer wall surface of the floating foundation, mooring cables are connected between the mooring members and the sea bottom surface, the mooring cables are in an inclined straight line structure, and tensioning mooring is formed for the floating foundation floating on the sea.
The power generation method of the offshore floating type secondary power generation spiral fan comprises the following steps:
the wind blows to the wind inlet of the spiral wind collector, and the wind speed in the spiral wind collector is gradually enhanced along with the guide of the flow channel with the gradually reduced sectional area until the wind flows upwards to the fan cylinder from the wind outlet above;
wind blowing into the fan barrel from bottom to top drives the fan to rotate, the wind finally flows out from the top end of the fan barrel, and a rotating speed difference is formed between the rotating fan and the middle shaft, so that an electric generating mechanism between the rotating fan and the middle shaft generates electricity through electromagnetic induction;
meanwhile, the spiral wind collector rotates under the influence of wind force blown into the spiral wind collector and flowing along the flow channel of the spiral wind collector, and the central shaft rotates along with the spiral wind collector to form a rotating speed difference with the floating foundation, so that a power generation mechanism between the spiral wind collector and the floating foundation generates power by synchronous electromagnetic induction; thereby synchronously constituting secondary power generation.
The invention has the following beneficial effects:
the invention has compact and reasonable structure, and the wind blown in orderly or disorderly in the circumferential direction is concentrated and blown to the fan barrel in a redirection way through the spiral wind collector, so that the fan in the fan barrel rotates to generate electricity, and the invention is particularly suitable for the wind power generation with uniform or non-uniform directions; meanwhile, the torque applied to the spiral wind collector in the wind collecting process is slowly released and absorbed through the middle shaft fixedly arranged with the spiral wind collector, and the middle shaft rotates to promote the power generation mechanism between the middle shaft and the floating foundation to generate power, so that the offshore floating type secondary power generation is realized; the window period of wind power generation is greatly prolonged, and the cost of wind power generation is effectively reduced;
according to the invention, the wind is collected and converted by the spiral wind collector and then blown to the fan in the upper fan barrel, so that the integral gravity center is low, the stability is good, the requirement on a floating foundation is low, the construction and operation cost is obviously reduced, and low wind speed or wind with disordered directions can be converted into high-speed uniform wind through the spiral wind collector, so that the wind power generation efficiency and the wind power generation window period are effectively increased;
the power generation mechanism between the middle shaft and the floating foundation generates power by the rotation of the middle shaft, is a large-torque power generator, can release the torque of the rotation of the upper spiral wind collector, and also forms secondary power generation, so that the requirements on the high strength of the floating foundation structure are reduced, the construction cost is reduced, the generated energy is increased, and additional benefits can be generated.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the spiral wind collector of the present invention.
FIG. 3 is a schematic view showing the connection between the upper shell plate and the partition plate of the spiral wind collector of the present invention.
Fig. 4 is a schematic view of the floating foundation internal power generation mechanism of the present invention.
FIG. 5 is a schematic view of the layout of fans inside the fan cartridge of the present invention.
FIG. 6 is a simplified schematic diagram of the principle of secondary power generation induced by wind collection according to the present invention.
Wherein: 1. a blower barrel; 2. a spiral wind collector; 3. a middle shaft; 4. a floating foundation; 5. a mooring member; 6. a mooring line; 7. a rotor assembly; 8. a stator assembly; 9. a fan;
21. a substrate; 22. a partition plate; 23. an outer shell plate; 24. an air outlet; 25. spirally intersecting lines; 221. an upper horizontal line; 222. vertical lines; 223. a lower horizontal line; 231. an opening line; 232. collecting lines; 233. an arc line.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the marine floating type secondary power generation spiral fan of the present embodiment includes a spiral wind collector 2, wind inlets are circumferentially arranged at intervals at the lower part of the spiral wind collector 2, a wind outlet 24 is arranged at the center of the top of the spiral wind collector 2, and a fan barrel 1 is installed at the wind outlet 24 of the spiral wind collector 2 in a penetrating manner; a middle shaft 3 is fixedly arranged on the upper and lower penetrating spiral wind collector 2, a plurality of groups of fans 9 are axially and rotatably arranged on the middle shaft 3 extending upwards into the fan barrel 1 at intervals, and a power generation mechanism is arranged between each fan 9 and the corresponding rotating middle shaft 3; a floating foundation 4 is rotatably arranged on a central shaft 3 extending downwards out of the spiral wind collector 2, and another group of power generation mechanisms are arranged between the inside of the floating foundation 4 and the central shaft 3 rotating relatively.
The method comprises the following steps that wind blown in orderly or disorderly in the circumferential direction is concentrated and blown to a fan barrel 1 in a redirection manner through a spiral wind collector 2, so that a fan 9 in the fan barrel 1 rotates to generate electricity; meanwhile, the torque applied to the spiral wind collector 2 in the wind collecting process is slowly released and absorbed through the middle shaft 3 fixedly arranged with the spiral wind collector 2, and the middle shaft 3 rotates to promote the power generation mechanism between the middle shaft and the floating foundation 4 to generate power, so that the offshore floating type secondary power generation is realized.
In the embodiment shown in fig. 2, a plurality of flow channels are formed in the spiral wind collector 2 from the wind inlet at the lower part in the circumferential direction to the wind outlet 24 at the top center, the sectional area of the wind inlet of a single flow channel is larger than that of the wind outlet 24, and the wind flowing in from the wind inlet is guided by the flow channels and then flows out vertically and upwards from the wind outlet 24.
In this embodiment, the flow channel is provided for guiding and redirecting the flow of the wind, and on the other hand, the flow channel also causes the wind speed flowing into and flowing out to be gradually strengthened by gradually reducing the sectional area, that is, the wind power is greatly improved while the flow channel is redirected.
In order to effectively improve the wind speed and the wind power, the sectional area of the air outlet 24 of the flow channel is far smaller than that of the air inlet, the air speed is effectively improved by the large difference between the sectional areas of the air inlet and the air outlet 24, and meanwhile, the large-area arrangement of the air inlet also effectively assists the blowing-in of external wind; the sectional area is gradually reduced, and meanwhile, the smooth and smooth wind guiding flow is assisted by the arrangement of the spiral flow direction and the spiral wall surface, and the extra loss of wind power is reduced in the flowing process.
In one embodiment, the spiral wind collector 2 can be a thin-wall shell structure, so that the weight of the spiral wind collector is effectively reduced while wind collection and steering are performed; the concrete structure can be as follows: the wind-guiding plate comprises a base plate 21, a middle shaft 3 vertically penetrates through the base plate 21 and is relatively fixed, a plurality of groups of partition plates 22 are jointly arranged between the circumferential outer wall surface of the middle shaft 3 and the base plate 21 along the circumferential direction, and adjacent partition plates 22 are combined with a shell plate 23 to form a flow channel for guiding wind to flow; that is, the spiral wind collector 2 is a thin-walled structure as a whole, and a flow passage is formed by the thin wall in the whole structure.
In the embodiment shown in fig. 3, the partition 22 includes an upper horizontal line 221 and a lower horizontal line 223 forming an angle in space, a vertical line 222 is connected between one end of the upper horizontal line 221 and one end of the lower horizontal line 223, and a spiral intersection line 25 is connected between the other end of the upper horizontal line 221 and the other end of the lower horizontal line 223; the vertical lines 222 are axially attached along the outer wall surface of the middle shaft 3.
The vertical line 222 is arranged, and is combined with the horizontal line 221 on the top of the vertical line, so as to ensure that the wind finally flowing out of the air outlet 24 is in a vertical and upward direction; the arrangement of the spiral intersecting line 25, in cooperation with the vertical line 222, forms a flow channel with a gradually decreasing cross section, and simultaneously effectively ensures the smooth and natural flow channel in the guiding direction.
In the embodiment shown in fig. 2 and 3, the partition plate 22 and the housing plate 23 are intersected with the spiral intersection line 25, the top end of the spiral intersection line 25 extends with an arc line 233 by taking the horizontal line 221 as a radius, the end part of the arc line 233 extends with a convergence line 232 along the posture of the spiral intersection line 25, the bottom end of the spiral intersection line 25 is connected with an opening line 231 towards the end part of the convergence line 232, and the arc line 233, the spiral intersection line 25, the opening line 231 and the convergence line 232 form the housing plate 23 corresponding to a single flow channel.
In this embodiment, the partition plate 22 and the outer shell plate 23 are both curved structures under the guidance of the spiral intersecting line 25, the curved structures can effectively guide the smooth flow of wind in the flow channel, and meanwhile, the outer shell plate 23 of the curved structures can guide the wind flowing through the flow channel to a certain extent so that the wind can flow into the flow channel through the wind inlet, thereby further assisting in wind collection.
Furthermore, the number of the partition boards 22 and the number of the outer shell boards 23 correspond to the number of the flow channels one by one, the collection line 232 on the outer shell board 23 is consistent with the shape of the upper part of the spiral intersecting line 25 on the partition board 22 and is jointed and connected with the upper part of the spiral intersecting line 25 on the partition board 22, and the opening line 231 on the outer shell board 23, the lower part of the spiral intersecting line 25 on the adjacent partition board 22 and the combination substrate 21 form an air inlet; the arc lines 233 on the top of the plurality of shell plates 23 are located on the same circumference to jointly form the air outlet 24, and the edge of the air outlet 24 is connected to the bottom edge of the fan barrel 1 in a penetrating way.
In one embodiment, three flow channel conveying devices are arranged in the spiral wind collector 2, and simultaneously, the number of the partition plates 22 and the number of the shell plates 23 are three, and the partition plates and the shell plates are uniformly distributed along the circumferential direction at 120 degrees; the upper horizontal line 221 at the top of the partition plate 22 and the lower horizontal line 223 at the bottom are arranged in a space of 120 degrees, so that the adjacent partition plates 22 are combined with the corresponding shell plates 23 to form air inlets of three flow channels on the base plate 21, the air inlets are in a triangle-like structure, and the wind energy in the circumferential direction of 360 degrees can be effectively collected by combining the guidance of the shell plates 23; the upper horizontal lines 221 of the adjacent partition plates 22 are combined with the outer shell plate 23 to form three air outlets 24 with correspondingly separated flow passages, and the single air outlets 24 are all arranged in the circumferential direction of the middle shaft 3 in a fan-shaped structure.
The spiral wind collector 2 is of a sea snail-like structure in the form of three spiral bodies, and each spiral body can collect wind in a 120-degree sector.
In the embodiment shown in fig. 4, a rotor assembly 7 is fixedly mounted on the middle shaft 3 inside the floating foundation 4, a stator assembly 8 is mounted on the inner wall surface of the floating foundation 4, and the rotor assembly 7 and the stator assembly 8 are electromagnetically coupled and matched to form the power generation mechanism.
The floating foundation 4 in this embodiment can be designed into a circular or polygonal column structure according to actual requirements, and buoyancy for floating the whole device is provided by the floating foundation 4.
Further, the rotor assembly 7 can be arranged along the circumferential direction of the outer wall surface of the central shaft 3, and the stator assembly 8 can be fixedly arranged on the inner wall surface of the floating foundation 4 around the outer circumference of the rotor assembly 7; the rotor assembly 7 rotates along with the middle shaft 3 and the spiral wind collector 2 under the action of wind power, so that the rotor assembly rotates relative to the stator assembly 8, and an electromagnetic coupling effect is generated to generate electricity.
Specifically, the rotor assembly 7 and the stator assembly 8 in the present embodiment may be arranged by referring to a power generation assembly in the related art.
In this embodiment, the power generation mechanism between the central shaft 3 and the floating foundation 4 generates power by the rotation of the central shaft 3, and is a large-torque generator, which not only can release the torque of the rotation of the upper spiral wind collector 2, but also forms secondary power generation, thereby reducing the requirement on the high strength of the floating foundation 4 structure, reducing the construction cost, increasing the generated energy, and generating additional benefits.
In the embodiment shown in fig. 5, the blower tube 1 is a vertically penetrating tube structure, and the air flowing vertically upwards from the air outlet 24 of the lower spiral air collector 2 drives the blower 9 in the blower tube 1 to rotate; a power generation mechanism matched with the fan 9 in electromagnetic coupling is arranged between the fan 9 and the middle shaft 3, and the relative rotation between the fan 9 and the middle shaft 3 enables the power generation mechanism between the fan 9 and the middle shaft 3 to generate power.
In this embodiment, the power generation mechanism between the fan 9 and the central shaft 3 may refer to a corresponding power generation structure for vertical wind power generation in the prior art.
In this embodiment, corresponding power generation mechanisms may be disposed between each fan 9 and the central shaft 3, and the power generation mechanisms are independent from each other and do not affect each other.
Preferably, the fan 9 in this embodiment adopts a structure with a small radius and a large disc surface ratio, on one hand, the size of the fan barrel 1 is reduced by the arrangement of the small radius blades, the size limitation of the fan barrel 1 can help increase the wind speed in the lower spiral wind collector 2, and simultaneously, the whole volume and weight are also reduced; on the other hand, the wind area of the blades is effectively increased through the arrangement of the large disc surface, so that power generation can be better performed; the disk surface ratio is the ratio of the fan blade expansion area to the fan disk surface.
In one embodiment, mooring members 5 extend outwards along the circumferential direction on the outer wall surface of the floating foundation 4, mooring cables 6 are connected between the mooring members 5 and the sea bottom surface, and the mooring cables 6 are in an inclined straight line structure and form tension mooring for the floating foundation 4 floating on the sea.
The mooring structure of tensioning formula for tie floating foundation 4 and not take place great displacement, increase the holistic stability of platform simultaneously, this mooring structure makes the radius of mooring obviously reduce, and the effective usable floor area of helping hand electricity generation on promoting the sea area, and the depth of water of adaptation is darker, and the suitability is better.
The power generation method of the offshore floating type secondary power generation helical fan of the embodiment, as shown in fig. 6, includes the following steps:
the wind blows to the wind inlet of the spiral wind collector 2, and the wind speed in the spiral wind collector 2 is gradually strengthened along with the guide of the flow channel with the gradually reduced sectional area until the wind flows upwards to the fan barrel 1 from the wind outlet 24 above;
wind blowing into the fan barrel 1 from bottom to top drives the fan 9 to rotate, the wind finally flows out from the top end of the fan barrel 1, and a rotation speed difference is formed between the rotating fan 9 and the middle shaft 3, so that an electric generating mechanism between the rotating fan 9 and the middle shaft 3 generates electricity through electromagnetic induction;
meanwhile, the spiral wind collector 2 rotates under the influence of wind force blown into the spiral wind collector and flowing along a flow channel of the spiral wind collector, and the central shaft 3 and the floating foundation 4 form a rotating speed difference along with the rotation of the spiral wind collector, so that a power generation mechanism between the spiral wind collector and the floating foundation generates power through synchronous electromagnetic induction; thereby synchronously constituting secondary power generation.
In this embodiment, the sea wind that blows in a distance is blown to the fan in the upper fan barrel 1 after being collected, converted by the spiral wind collector 2, and not only the whole center of gravity is low, stability is good, and it is little to floating foundation 4 requirement, is showing to have reduced the construction and operation cost, can also be with low wind speed or the mixed and disorderly wind of direction transform into high-speed even wind through spiral wind collector 2 in addition, has effectively increased wind power generation efficiency and wind power generation window period.
In the embodiment, the spiral wind collector 2 receives torque around the central shaft 3 in the process of collecting wind and changing the wind direction; by arranging the power generation mechanism between the middle shaft 3 and the floating foundation 4, the spiral wind collector 2 drives the middle shaft 3 to slowly rotate, thereby not only effectively releasing the torque of the spiral wind collector 2 to the middle shaft 3, but also creating a second power generation device.
The invention provides a new mode for offshore floating type wind power generation, which can improve the adaptability of a floating type fan on the sea and increase the window period of wind power generation; the floating type spiral fan is simple in technology, low in cost, high in environmental adaptability and wide in application prospect.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (10)
1. The utility model provides a marine showy formula secondary electricity generation helical fan which characterized in that: the wind power generation device comprises a spiral wind collector (2), wherein wind inlets are formed in the lower portion of the spiral wind collector (2) at intervals along the circumferential direction, a wind outlet (24) is formed in the center of the top of the spiral wind collector (2), and a fan barrel (1) is installed at the wind outlet (24) of the spiral wind collector (2) in a penetrating mode; a middle shaft (3) is fixedly arranged on the upper and lower penetrating spiral wind collector (2), a plurality of groups of fans (9) are rotatably arranged on the middle shaft (3) extending upwards into the fan barrel (1) along the axial direction at intervals, and a power generation mechanism is arranged between each fan (9) and the middle shaft (3) rotating relatively; a floating foundation (4) is rotatably arranged on a middle shaft (3) extending out of the spiral wind collector (2) downwards, and another group of power generation mechanisms are arranged between the inside of the floating foundation (4) and the middle shaft (3) rotating relatively.
2. The offshore floating type secondary power generation helical fan according to claim 1, wherein: a plurality of flow channels are formed in the spiral air collector (2) from the air inlet at the circumferential lower part to the air outlet (24) at the center of the top part, the sectional area of the air inlet of a single flow channel is larger than that of the air outlet (24), and air flowing in from the air inlet is guided by the flow channels and then vertically flows out upwards through the air outlet (24).
3. The marine floating type secondary power generation helical fan according to claim 2, wherein: spiral wind collector (2) is thin wall shell structure, and its concrete structure is: the wind power generation device comprises a base plate (21), a middle shaft (3) penetrates through the base plate (21) up and down and is fixed relatively, a plurality of groups of partition plates (22) are installed between the circumferential outer wall surface of the middle shaft (3) and the base plate (21) along the circumferential direction, and adjacent partition plates (22) are combined with a shell plate (23) to form a flow channel for guiding wind to flow.
4. The marine floating secondary power generation helical fan of claim 3, wherein: the partition plate (22) comprises an upper horizontal line (221) and a lower horizontal line (223) which form an included angle in space, a vertical line (222) is connected between one end of the upper horizontal line (221) and one end of the lower horizontal line (223), and a spiral intersecting line (25) is connected between the other end of the upper horizontal line (221) and the other end of the lower horizontal line (223); the vertical line (222) is axially attached to the outer wall surface of the middle shaft (3).
5. The marine floating secondary power generation helical fan of claim 4, wherein: baffle (22) and skin plate (23) converge in spiral intersect (25), horizontal line (221) more than spiral intersect (25) top has arc line (233) for the radius extension, arc line (233) tip extends along the gesture of spiral intersect (25) has collection line (232), spiral intersect (25) bottom has linked up opening line (231) towards the tip of collection line (232), constitute the skin plate (23) that single runner corresponds by arc line (233), spiral intersect (25), opening line (231) and collection line (232).
6. The offshore floating secondary power generation helical fan of claim 5, wherein: the number of the partition plates (22) and the number of the outer shell plates (23) correspond to the number of the flow channels one to one, the shape of a gathering line (232) on each outer shell plate (23) is consistent with that of the upper part of a spiral intersecting line (25) on each partition plate (22) and the gathering line is attached to the upper part of the spiral intersecting line (25) on each partition plate, and an opening line (231) on each outer shell plate (23) forms an air inlet together with the lower part of the spiral intersecting line (25) on the adjacent partition plate (22) and the combination base plate (21); the arc lines (233) at the tops of the plurality of shell plates (23) are positioned on the same circumference to jointly form an air outlet (24), and the edge of the air outlet (24) is connected with the bottom edge of the fan barrel (1) in a penetrating way.
7. The offshore floating type secondary power generation helical fan according to claim 1, wherein: a rotor assembly (7) is fixedly mounted on a middle shaft (3) positioned in the floating foundation (4), a stator assembly (8) is mounted on the inner wall surface of the floating foundation (4), and the rotor assembly (7) and the stator assembly (8) are electromagnetically coupled and matched to form the power generation mechanism.
8. The marine floating type secondary power generation helical fan according to claim 1, wherein: the fan barrel (1) penetrates through the upper part and the lower part, and the air flowing vertically upwards from the air outlet (24) of the lower spiral air collector (2) drives the fan (9) in the fan barrel (1) to rotate; a power generation mechanism matched with the fan (9) in electromagnetic coupling is arranged between the fan and the middle shaft (3), and the relative rotation between the fan (9) and the middle shaft (3) enables the power generation mechanism between the fan and the middle shaft to generate power.
9. The marine floating type secondary power generation helical fan according to claim 1, wherein: mooring pieces (5) extend outwards along the circumferential direction on the outer wall surface of the floating foundation (4), mooring cables (6) are connected between the mooring pieces (5) and the sea bottom surface, and the mooring cables (6) are in inclined straight line structures and form tensioning type mooring for the floating foundation (4) floating on the sea.
10. The method for generating power by using the offshore floating type secondary power generation spiral fan as claimed in claim 2, wherein the method comprises the following steps: the method comprises the following steps:
the wind blows to the wind inlet of the spiral wind collector (2), and the wind speed in the spiral wind collector (2) is gradually enhanced along with the guide of the flow channel with the gradually reduced sectional area until the wind flows upwards to the fan cylinder (1) from the wind outlet (24) above;
wind blowing into the fan barrel (1) from bottom to top drives the fan (9) to rotate, the wind finally flows out from the top end of the fan barrel (1), and a rotating speed difference is formed between the rotating fan (9) and the middle shaft (3) so that a power generation mechanism between the rotating fan and the middle shaft generates electricity through electromagnetic induction;
meanwhile, the spiral wind collector (2) rotates under the influence of wind force blown into the spiral wind collector and flowing along a flow channel of the spiral wind collector, and the middle shaft (3) rotates along with the spiral wind collector to form a rotating speed difference with the floating foundation (4), so that a power generation mechanism between the spiral wind collector and the floating foundation generates power through synchronous electromagnetic induction; thereby synchronously constituting secondary power generation.
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| CN115355132B (en) | 2023-07-18 |
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