CN117329065A - Double-wind-wheel blade assembly suitable for deep-open-sea fan and wind driven generator - Google Patents
Double-wind-wheel blade assembly suitable for deep-open-sea fan and wind driven generator Download PDFInfo
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- CN117329065A CN117329065A CN202311302582.4A CN202311302582A CN117329065A CN 117329065 A CN117329065 A CN 117329065A CN 202311302582 A CN202311302582 A CN 202311302582A CN 117329065 A CN117329065 A CN 117329065A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 23
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 11
- 238000007667 floating Methods 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 241000124001 Alcyonacea Species 0.000 claims 3
- 238000010276 construction Methods 0.000 claims 1
- 230000005484 gravity Effects 0.000 abstract description 13
- 230000006872 improvement Effects 0.000 description 6
- 238000010248 power generation Methods 0.000 description 6
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- 230000001788 irregular Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 208000017587 Polyrrhinia Diseases 0.000 description 2
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- 238000004804 winding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- 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
- 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
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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
- F03D15/00—Transmission of mechanical power
- F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
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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
- 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
- F05B2260/40—Transmission of power
- F05B2260/403—Transmission of power through the shape of the drive components
- F05B2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a double-wind-wheel blade assembly and a wind driven generator suitable for a deep-sea fan, wherein the double-wind-wheel blade assembly suitable for the deep-sea fan comprises an upwind front wind wheel, a downwind rear wind wheel and a public shaft, the upwind front wind wheel and the downwind rear wind wheel are respectively arranged at different ends of the public shaft, the upwind front wind wheel and the downwind rear wind wheel are consistent in size, equal in weight and consistent in steering, and in the running process, the included angles of the upwind front wind wheel and the downwind rear wind wheel are fixed and the rotating speeds are synchronous; the wind generating set comprises a blade assembly and a cabin, wherein a transmission mechanism and a generator are arranged in the cabin, the blade assembly is the double-wind-wheel blade assembly suitable for the deep-open-sea fan, and an upwind front wind wheel and a downwind rear wind wheel are arranged at different ends of the cabin. The invention aims to solve the problems of side stalling of a front wind wheel and a rear wind wheel, overlarge front and rear rotating speed difference, poor power performance and the like, and the problem of overhigh gravity center of a unit caused by a traditional large-capacity single impeller form.
Description
Technical Field
The invention relates to the field of wind power, in particular to a double-wind-wheel blade assembly suitable for a deep-open-sea fan and a wind driven generator.
Background
Because the offshore area is affected by inland terrain and hydrological natural factors, fishery, shipping and other human activity factors, wind power resources are far less abundant and stable than that of the deep sea area, and the large capacity of a fan and the large scale of a wind farm are not facilitated, the development of the offshore wind power industry in the future towards the deep sea area is promoted, and the improvement importance of the novel high-capacity offshore floating wind turbine generator system related technology facing the deep sea is increasingly highlighted.
However, most of the deep-open sea floating wind turbines still use a common single wind wheel form of a land wind turbine at present, and as the capacity of the wind turbine is increased, the length of the blades of the single wind wheel wind turbine is continuously lengthened, the center of gravity of the wind turbine is too high due to the ultra-long blades, the safety is lowered, and meanwhile, the cost and the manufacturing cost of the blades are too high, so that the low-price propulsion of the offshore wind power is not facilitated. How to improve the utilization rate of wind energy of wind power generation units to incoming flow, ensuring the power density of the units is always the key research direction in the wind power generation field, and the existing wind power generation units mostly adopt a single-impeller single-nose mode, so that the wind energy capturing capability is limited; the blade airfoil optimization design technology is relatively mature, and the improvement on wind energy capturing efficiency is limited.
Therefore, how to improve the wind energy utilization efficiency of the offshore wind turbine and the power density of the offshore wind turbine and ensure the anti-capsizing capability and the safety performance of the offshore wind turbine in the deep open sea environment is still a problem to be solved in the offshore wind power field.
Disclosure of Invention
The invention aims to solve the technical problems: aiming at the problems in the prior art, the invention provides a double-wind-wheel blade assembly suitable for a deep-open-sea fan and a wind driven generator, and aims to solve the problems that a front wind wheel and a rear wind wheel have side stalling or the front and rear rotating speeds are too different, the power performance is poor, and the like, and the problem that the gravity center of a unit is too high due to a traditional large-capacity single-impeller form.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a double-wind-wheel blade assembly suitable for a deep-open-sea fan, which comprises an upwind front wind wheel, a downwind rear wind wheel and a common shaft, wherein the upwind front wind wheel and the downwind rear wind wheel are respectively arranged at different ends of the common shaft, the upwind front wind wheel and the downwind rear wind wheel are consistent in size, equal in weight and consistent in steering, and in the running process, the included angles of the upwind front wind wheel and the downwind rear wind wheel are fixed and the rotating speeds are synchronous.
Optionally, the upwind front wind wheel and the downwind rear wind wheel are both of a two-blade structure, and two blades of the two-blade structure are positioned on the same straight line.
Optionally, the upwind front wind wheel and the downwind rear wind wheel are both fixed on a common shaft through spline installation by adopting shaft external gears.
Optionally, the fixed included angle between the upwind front wind wheel and the downwind rear wind wheel means that the two blade structures of the upwind front wind wheel and the downwind rear wind wheel are mutually perpendicular and arranged in an X shape in the running process.
Optionally, the common shaft is a hollow shaft.
The invention provides a wind generating set, which comprises a blade assembly and a cabin, wherein a transmission mechanism and a generator are arranged in the cabin, the blade assembly is the double-wind-wheel blade assembly suitable for a deep-open-sea fan, and a upwind front wind wheel and a downwind rear wind wheel are arranged at different ends of the cabin.
Optionally, the transmission mechanism comprises an external shaft gear and a speed increasing gear box, the external shaft gear is fixedly arranged on a common shaft, the upwind front wind wheel and the downwind rear wind wheel are directly and fixedly connected with the common shaft, the external shaft gear is meshed with an input shaft of the speed increasing gear box through gears, and an output shaft of the speed increasing gear box is connected with a main shaft of the generator.
Optionally, the external shaft gear is of a detachable structure and is fixed on a common shaft through spline installation so as to facilitate later maintenance and replacement; the shaft external gear is meshed with an input shaft of the speed increasing gear box through a single-stage external meshing gear pair to achieve preliminary speed increasing.
Optionally, a speed-increasing planetary gear set is arranged in the speed-increasing gear box, the external shaft gear is meshed with an input shaft of the speed-increasing planetary gear set through gears, an output shaft of the speed-increasing planetary gear set is connected with a main shaft of the generator, the speed-increasing planetary gear set is composed of more than two groups of planetary gear sets, and the output shaft of the speed-increasing gear box is connected with the main shaft of the generator through a coupler.
The invention provides a double-head wind driven generator, which comprises a floating platform with a mooring component, wherein a pair of supporting arms are arranged on the floating platform, each supporting arm is provided with the wind driven generator set, and an upwind front wind wheel and a downwind rear wind wheel between the two wind driven generator sets of the pair of supporting arms are mirror image blades.
Compared with the prior art, the invention has the following advantages:
1. the double wind wheel blade assembly suitable for deep open sea comprises an upwind front wind wheel, a downwind rear wind wheel and a common shaft, wherein the upwind front wind wheel and the downwind rear wind wheel are respectively arranged at different ends of the common shaft, secondary capture of incoming wind energy is realized through a heterodromous big wind wheel structure formed by the upwind front wind wheel and the downwind rear wind wheel, and the power density of a wind generator can be improved.
2. The invention adopts the double-blade form of the upwind front wind wheel and the downwind rear wind wheel which are consistent in size, equal in weight and consistent in steering, so that the included angles of the upwind front wind wheel and the downwind rear wind wheel are fixed and the rotating speeds are synchronous when the blade assembly operates, the problems that one side of the front wind wheel and the rear wind wheel stops rotating or the front and rear rotating speeds are too different, the power performance is poor and the like are solved, and meanwhile, the upwind front wind wheel and the downwind rear wind wheel are respectively arranged at two ends of a common shaft, the blade length is further reduced, and the problem that the gravity center of a unit is too high due to the traditional high-capacity single-impeller form is solved. 3. The invention comprises an upwind front wind wheel, a downwind rear wind wheel and a public shaft, wherein the upwind front wind wheel and the downwind rear wind wheel are respectively arranged at different ends of the public shaft, and the upwind front wind wheel and the downwind rear wind wheel have the same structural size, the same weight and the same steering, so that the included angles of the upwind front wind wheel and the downwind rear wind wheel are fixed and the rotation speeds are synchronous when the blade assembly runs, the static loads of the front wind wheel and the rear wind wheel on two sides of the cabin, which respectively act on two ends of the public shaft, are balanced, and the extra weight of the cabin section is reduced; the front wind wheel and the rear wind wheel of the upwind direction are respectively arranged at different ends of the engine room, and the front wind wheel and the rear wind wheel are rigidly connected through a common shaft, so that the front and rear wind wheels can be ensured to be in a working state when the fan operates, adverse effects of irregular steering and rotation speed change of the front and rear wind wheels and poor controllability are eliminated, instability of input rotation speed and torque when the wind driven generator operates is effectively reduced, the practicability is wider, the two wind wheels can be ensured to be in a good working state when the fan operates, and the situation that one side of the front and rear wind wheels does not rotate in opposite directions is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a wind turbine generator system according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a wind turbine generator system according to an embodiment of the present invention.
Fig. 3 is a schematic side view of the external shaft gear according to the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a double-head wind driven generator according to an embodiment of the present invention.
Legend description: 1. upwind front wind wheel; 2. a downwind rear wind wheel; 3. a common shaft; 4. an external shaft gear; 5. an input shaft; 6. a speed increasing gear box; 7. an output shaft; 8. a generator; 9. a nacelle; 10. a wind front wind wheel is arranged on the left side of the double-head; 11. a front wind wheel downwind on the left side of the double-head; 12. a V-shaped support structure; 13. a floating platform; 14. a mooring system; 15. a front wind wheel downwind on the right side of the double-head; 16. the right side of the double-head wind wheel is winded upwards.
Detailed Description
Referring to fig. 1 and 2, the present embodiment provides a double wind wheel blade assembly suitable for a deep open sea fan, including an upwind front wind wheel 1, a downwind rear wind wheel 2 and a common shaft 3, the upwind front wind wheel 1 and the downwind rear wind wheel 2 are respectively installed at different ends of the common shaft 3, the upwind front wind wheel 1 and the downwind rear wind wheel 2 have the same size, the same weight and the same steering direction, and in the operation process, the included angles of the upwind front wind wheel 1 and the downwind rear wind wheel 2 are fixed and the rotation speeds are synchronous. The double-blade form of the upwind front wind wheel and the downwind rear wind wheel with the same size, the same weight and the same steering is adopted in the embodiment, so that the included angles of the upwind front wind wheel 1 and the downwind rear wind wheel 2 are fixed and the rotating speeds are synchronous when the double-wind wheel blade assembly operates, the problems that one side of the front wind wheel and the rear wind wheel stops rotating or the front and rear rotating speeds are too large in difference, the power performance is poor and the like are solved, meanwhile, the upwind front wind wheel 1 and the downwind rear wind wheel 2 are respectively arranged at two ends of the common shaft 3, compared with a single wind wheel structure, the blade length is further reduced, and the problem that the gravity center of a unit is too high due to the traditional high-capacity single impeller form is solved. Meanwhile, when the blade assembly runs, the included angles of the upwind front wind wheel 1 and the downwind rear wind wheel 2 are fixed, the rotation speeds are synchronous, the condition of uneven stall output of the single-side wind wheels can be effectively avoided, the simultaneous output of the two wind wheels is ensured, the wind energy is captured efficiently, and the power density of the unit is improved.
In order to further eliminate the adverse effects of irregular steering and rotation speed change of the upwind front wind wheel 1 and the downwind rear wind wheel 2 and poor controllability, the stability of input rotation speed and torque during operation of the wind driven generator is improved, as shown in fig. 2, the upwind front wind wheel 1 and the downwind rear wind wheel 2 of the embodiment are both of a two-blade structure, two blades of the two-blade structure are positioned on the same straight line, and compared with a common three-blade wind wheel, the two-blade wind wheel adopts a two-blade form with shorter length and lighter weight, and can effectively reduce the weight of a cabin, thereby reducing the gravity center of a unit.
As shown in fig. 3, both the upwind front wind wheel 1 and the downwind rear wind wheel 2 of the present embodiment are fixed on a common shaft 3 by spline mounting using shaft external gears. The shaft external gear is fixed on the common shaft 3 through spline installation, so that simplification of a transmission structure is realized, and the problem of low light weight of the unit is solved on the basis of not additionally adding a set of speed increaser and generator.
In this embodiment, the fixed included angle between the upwind front wind wheel 1 and the downwind rear wind wheel 2 in the running process means that the two blade structures of the upwind front wind wheel 1 and the downwind rear wind wheel 2 are mutually perpendicular and arranged in an X shape. The secondary capture of the incoming wind energy is realized through the X-shaped different-side equal-large wind wheel structure formed by the blades of the upwind front wind wheel 1 and the downwind rear wind wheel 2 which are arranged in an X shape, and the wind energy utilization rate and the power density (the capacity of a unit) of the wind generator can be improved. The upwind front wind wheel 1 and the downwind rear wind wheel 2 have a certain included angle in space, and the influence of the overall passive unbalance of the double wind wheels when the double wind wheels move at the included angle of 90 degrees can be minimized in theory. In the embodiment, the upwind front wind wheel 1 and the downwind rear wind wheel 2 with two-blade structures are respectively provided with independent pitch control strategies, so that the influence of the overall dynamic unbalance of the double wind wheels under the wind field load can be reduced through the pitch control differentiation of the front wind wheel and the rear wind wheel in the running process of the fan.
In this embodiment, the common shaft 3 is a hollow shaft, so that the weight and cost of the product can be reduced on the premise of ensuring the strength.
In addition, as shown in fig. 1 and 2, the present embodiment provides a wind generating set, including a blade assembly and a nacelle 9, in which a transmission mechanism and a generator 8 are disposed in the nacelle 9, the blade assembly is the aforementioned double wind wheel blade assembly suitable for a deep-sea fan, and the upwind front wind wheel 1 and the downwind rear wind wheel 2 are disposed at different ends of the nacelle 9. When the upwind front wind wheel 1 and the downwind rear wind wheel 2 rotate at the same speed in the same direction, load and power are input and transmitted through the common shaft 3 and the transmission mechanism, and then output to the generator 8 through the output shaft of the transmission mechanism, and finally, efficient wind energy capturing of incoming wind energy with high power density is completed. In this embodiment, the transmission mechanism and the generator 8 are disposed in the nacelle 9, and the reasonable layout of the blade assemblies and the center of gravity of the nacelle 9 as a whole can be realized through proper reasonable arrangement and adjustment, for example, in this embodiment, the center of gravity of the blade assemblies and the nacelle 9 as a whole is preferably located at the center of gravity of the nacelle 9 through layout, so that the influence of irregular steering and rotation speed change and poor controllability of the upwind front wind wheel 1 and the downwind rear wind wheel 2 is eliminated, and instability of input rotation speed and torque during operation of the wind driven generator is reduced.
As shown in fig. 1 and 3, the transmission mechanism in this embodiment includes an external shaft gear 4 and a speed increasing gear box 6, the external shaft gear 4 is mounted and fixed on a common shaft 3, the upwind front wind wheel 1 and the downwind rear wind wheel 2 are directly and fixedly connected with the common shaft 3, the external shaft gear 4 is meshed with an input shaft 5 of the speed increasing gear box 6 through gears, and an output shaft 7 of the speed increasing gear box 6 is connected with a main shaft of a generator 8.
The shaft external gear 4 can be selectively installed and fixed on the common shaft 3 according to the need, for example, as an alternative implementation manner, in this embodiment, the shaft external gear 4 is in a detachable structure, and is installed and fixed on the common shaft 3 through a spline so as to facilitate later maintenance and replacement, and can ensure torque transmission performance; the shaft external gear 4 is meshed with the input shaft 5 of the speed increasing gear box 6 through a single-stage external meshing gear pair to realize preliminary speed increasing, and a needed gear pair can be adopted according to the needs. The common shaft 3 also comprises an external spline structure which is matched with the transmission gear, namely the common shaft external gear, as shown in figure 3, and torque load is transmitted through the spline shaft external gear 4, so that the reliability of transmission is ensured; the external shaft gear 4 and the input shaft 5 realize power transmission through external gear engagement, and it is noted that the input shaft 5 includes an input shaft with external splines and an external gear matched with the input shaft, and the description is omitted herein for simplicity. The shaft external gear is fixed on the common shaft 3 through spline installation, so that simplification of a transmission structure is realized, and the problem of low light weight of the unit is solved on the basis of not additionally adding a set of speed increaser and generator.
Considering that a larger load may exist in the environment of the deep sea wind power generator set (for example, under typhoon working condition), as an optional implementation manner, a speed increasing planetary gear set is arranged in the speed increasing gear box 6 in this embodiment, an external shaft gear 4 is meshed with an input shaft 5 of the speed increasing planetary gear set through gears, an output shaft 7 of the speed increasing planetary gear set is connected with a main shaft of a generator 8, the speed increasing planetary gear set is composed of more than two groups of planetary gear sets, an output shaft 7 of the speed increasing gear box 6 is connected with the main shaft of the generator 8 through a coupling, and the problem that the matching performance of the deep sea high-capacity wind power generator and the incoming wind load is poor is solved by arranging the speed increasing planetary gear set in the speed increasing gear box 6, so that the load characteristics of the deep sea high-capacity wind power generator can be matched, and the general use requirements can be met by matching the transmission ratio and the power grade in the specific implementation process.
The output shaft 7 of the speed increasing gearbox 6 and the main shaft of the generator 8 can be connected in a required manner according to the need, for example, as an alternative implementation manner, in this embodiment, the output shaft 7 of the speed increasing gearbox 6 and the main shaft of the generator 8 are connected through a coupling (without other gear engaged transmission forms), and the coupling can be used for realizing the coupling, and the separation between the speed increasing gearbox 6 and the generator 8 can be conveniently realized so as to facilitate maintenance operation.
The working principle of the wind generating set in this embodiment is as follows: under normal power generation working conditions, secondary wind energy capturing is carried out on incoming wind energy through the upwind front wind wheel 1 and the downwind rear wind wheel 2, the common shaft 3 fixedly connected with the front wind wheel and the rear wind wheel rotates, reliable transmission of load between the two is completed through an external spline structure on the shaft and the external shaft gear 4, primary improvement of rotating speed is achieved through an external-meshed single-stage speed-increasing gear pair between the external shaft gear 4 and the input shaft 5, final rotating speed improvement is completed through a speed-increasing planetary gear set in the speed-increasing gear box 6 directly, mechanical energy is finally input to a generator end through a coupler between the output shaft 7 and the generator 8, and the conversion and transmission process of wind energy to mechanical energy are achieved; the wind energy capturing device is suitable for deep open sea high-capacity wind power generation by safe and reliable operation of specific processes from twice high-efficiency wind energy capturing to mechanical energy transmission and input to a generator end.
As shown in fig. 4, this embodiment provides a double-nose wind driven generator, including a floating platform 13 with a mooring component 14, a pair of support arms 12 are provided on the floating platform 13, and each support arm 12 is provided with the wind generating set described above, and the upwind front wind wheel 1 and the downwind rear wind wheel 2 between the two wind generating sets of the pair of support arms 12 are mirror image blades, so that the left and right nose (wind generating sets on the pair of support arms 12) of the double-nose wind driven generator can realize the opposite rotation of the left and right nose wind wheels and offset the axial resultant force of the incoming wind on the blades mutually, and finally can make the stress of the floating platform more balanced, solve the problem of poor stability of the operation stress of the set, make the stress of the floating platform more balanced, and improve the stability of the operation of the set. Referring to fig. 4, in the present embodiment, the support arms 12 are L-shaped support structures, the inner support arms of the two support arms 12 share a winding mechanism, and the outer support arms are provided with the wind turbine generator set. And wherein 10 denotes a double-head left upwind front wind wheel, 11 denotes a double-head left downwind front wind wheel, 15 denotes a double-head right downwind front wind wheel, 16 denotes a double-head right upwind front wind wheel, there are a double-head left upwind front wind wheel 10, a double-head left downwind front wind wheel 11, a double-head right upwind front wind wheel 16, and a double-head right downwind front wind wheel 15 respectively provided at different ends of each side nacelle. The two groups of blade assemblies are mirror symmetry blades and wing profiles, wherein the double-head left upwind front wind wheel 10 and the double-head right upwind front wind wheel 16 are mirror images, and the double-head left downwind front wind wheel 11 and the double-head right downwind front wind wheel 15 are mirror images.
In summary, the embodiment is suitable for the deep open sea double wind wheel blade assembly to adopt the double wind wheel arrangement structure with equal front and rear sizes formed by the upwind front wind wheel 1 and the downwind rear wind wheel 2, and to capture the incoming wind energy for the second time, so as to realize the improvement of the wind energy utilization efficiency; meanwhile, the upwind front wind wheel 1 and the downwind rear wind wheel 2 are fixedly connected through the common shaft 3, so that the double wind wheels play a role in capturing wind energy during the operation of the unit, the irregular operation condition that the single wind wheel works and the rotation speeds of the front wind wheel and the rear wind wheel are inconsistent in rotation speed and rotation direction is avoided, the fluctuation and uncontrollability of the wind energy capturing capacity of the unit are reduced, and the operation stability of the whole unit is realized. The embodiment is suitable for the upwind front wind wheel 1 and the downwind rear wind wheel 2 of the deep and open sea double wind wheel blade assembly, which are composed of two blades, and generally realize the improvement of single-machine capacity and power density, reduce the gravity center height of the unit while realizing large capacity, and improve the anti-overturning capacity of the unit. Meanwhile, the upwind front wind wheel 1 and the downwind rear wind wheel 2 are fixedly connected through the common shaft 3, and the teeter-totter effect caused by the influence of wind shear on the front wind wheel under the normal power generation working condition is weakened by the wind load part of the rear wind wheel to a certain extent, so that the waving amplitude of the tip of the blade is reduced, and the working state of the blade is improved. The embodiment is suitable for the blade assembly of the deep open sea wind generating set, and has the characteristics of large capacity, low gravity center, stable structure, high power density, high efficiency wind energy capture and the like. The double wind wheel blade assembly suitable for the deep open sea fan comprises an upwind front wind wheel 1, a downwind rear wind wheel 2 and a common shaft 3, wherein the upwind front wind wheel 1 and the downwind rear wind wheel 2 are respectively arranged at different ends of the common shaft 3, the upwind front wind wheel 1 and the downwind rear wind wheel 2 are consistent in size, equal in weight and consistent in rotation, the included angle of the upwind front wind wheel 1 and the downwind rear wind wheel 2 is fixed and synchronous in rotation speed in the operation process, the blade length can be effectively reduced on the basis of a single wind wheel form, the gravity center height of the unit is reduced, and the upwind front wind wheel and the downwind rear wind wheel are in the double blade form with consistent size, equal weight and consistent rotation speed, so that the blade assembly is fixed and synchronous in rotation speed in the upwind front wind wheel and the downwind rear wind wheel included angle in the operation, and the real-time synchronous output force of the upwind front wind wheel and the downwind rear wind wheel is kept, meanwhile, the power generating unit is simplified in a transmission structure by using the common shaft, and the light weight degree of the unit is improved on the basis of not adding an extra speed increaser and a generator. In addition, the left and right machine heads of the double-machine head wind driven generator can realize the opposite rotation of the wind wheels of the left and right machine heads and offset the axial resultant force of the incoming wind to the blades by adopting the blades and the wing profiles which are in mirror symmetry, so that the stress of the floating type platform can be balanced finally, and the running stability of the unit is improved. On the basis of the existing double-wind-wheel generator set, the invention further simplifies the wind wheel movement mode and the transmission mechanism, can improve the light weight degree and the power density of the wind driven generator, eliminates the adverse effects of irregular steering and rotation speed change and poor controllability of front and rear wind wheels, reduces the instability of input rotation speed and torque when the wind driven generator operates, can ensure that the two wind wheels are in good working states when the wind driven generator operates, has the advantages of large capacity, low gravity center, stable structure, high power density and high-efficiency wind energy capture, and is particularly suitable for deep sea wind driven generator sets with complex wind conditions and sea conditions.
It should be understood that the specific dimensions of the above structure and the distribution form of each part are not limited, and all the dimensions and the distribution form of the parts which can meet the use requirements are within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (10)
1. The double-wind-wheel blade assembly suitable for the deep-open-sea fan is characterized by comprising an upwind front wind wheel (1), a downwind rear wind wheel (2) and a public shaft (3), wherein the upwind front wind wheel (1) and the downwind rear wind wheel (2) are respectively arranged at different ends of the public shaft (3), and the upwind front wind wheel (1) and the downwind rear wind wheel (2) are consistent in size, equal in weight and consistent in steering, and in the operation process, the included angles of the upwind front wind wheel (1) and the downwind rear wind wheel (2) are fixed and synchronous in rotating speed.
2. Double wind wheel blade assembly suitable for deep open sea fans according to claim 1, characterized in that the upwind front wind wheel (1) and downwind rear wind wheel (2) are both of a two blade structure and the two blades of the two blade structure are located on the same straight line.
3. Double wind wheel blade assembly suitable for deep open sea fans according to claim 2, characterized in that both upwind front wind wheel (1) and downwind rear wind wheel (2) are fixed on a common shaft (3) by spline mounting with external shaft gears.
4. The double wind wheel blade assembly suitable for the deep open sea fan according to claim 1, wherein the fixed included angles of the upwind front wind wheel (1) and the downwind rear wind wheel (2) in the running process means that the two blade structures of the upwind front wind wheel (1) and the downwind rear wind wheel (2) are mutually perpendicular and are arranged in an X shape.
5. Double wind turbine blade assembly suitable for deep open sea fans according to claim 1, characterized in that the common shaft (3) is a hollow shaft.
6. Wind generating set, comprising a blade assembly and a nacelle (9), wherein a transmission mechanism and a generator (8) are arranged in the nacelle (9), and the wind generating set is characterized in that the blade assembly is a double wind wheel blade assembly suitable for a deep-open sea wind turbine according to any one of claims 1-5, and the upwind front wind wheel (1) and the downwind rear wind wheel (2) are arranged at different ends of the nacelle (9).
7. Wind generating set according to claim 6, characterized in that the transmission mechanism comprises an external shaft gear (4) and a speed increasing gear box (6), the external shaft gear (4) is fixedly arranged on a common shaft (3), the upwind front wind wheel (1) and the downwind rear wind wheel (2) are directly fixedly connected with the common shaft (3), the external shaft gear (4) is meshed with an input shaft (5) of the speed increasing gear box (6) through gears, and an output shaft (7) of the speed increasing gear box (6) is connected with a main shaft of a generator (8).
8. Wind generating set according to claim 7, characterized in that the external shaft gear (4) is of detachable construction, fixed on a common shaft (3) by means of a splined installation for the subsequent repair and replacement; the shaft external gear (4) is meshed with an input shaft (5) of a speed increasing gear box (6) through a single-stage external meshing gear pair to realize primary speed increasing.
9. Wind generating set according to claim 8, characterized in that a speed increasing planetary gear set is arranged in the speed increasing gear box (6), the shaft external gear (4) is meshed with an input shaft (5) of the speed increasing planetary gear set through gears, an output shaft (7) of the speed increasing planetary gear set is connected with a main shaft of the generator (8), the speed increasing planetary gear set is composed of more than two groups of planetary gear sets, and the output shaft (7) of the speed increasing gear box (6) is connected with the main shaft of the generator (8) through a coupling.
10. A double-head wind driven generator, comprising a floating platform with mooring components, characterized in that a pair of supporting arms are arranged on the floating platform, each supporting arm is provided with a wind generating set according to any one of claims 6-9, and an upwind front wind wheel (1) and a downwind rear wind wheel (2) between the two wind generating sets of the pair of supporting arms are mirror image blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311302582.4A CN117329065A (en) | 2023-10-09 | 2023-10-09 | Double-wind-wheel blade assembly suitable for deep-open-sea fan and wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311302582.4A CN117329065A (en) | 2023-10-09 | 2023-10-09 | Double-wind-wheel blade assembly suitable for deep-open-sea fan and wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117329065A true CN117329065A (en) | 2024-01-02 |
Family
ID=89291384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311302582.4A Pending CN117329065A (en) | 2023-10-09 | 2023-10-09 | Double-wind-wheel blade assembly suitable for deep-open-sea fan and wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117329065A (en) |
-
2023
- 2023-10-09 CN CN202311302582.4A patent/CN117329065A/en active Pending
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