CN115977888A - Double-wind-wheel double-speed-increasing-box wind generating set - Google Patents
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention relates to the technical field of double-wind-wheel wind power generation, and discloses a double-wind-wheel double-speed-increasing-box wind power generator set, which comprises a generator, two wind wheels, two speed increasing boxes, a wind wheel spindle system, a torque and rotation speed balancing coupler, a coupler shell, a coupler elastic connecting shaft, coupler coupling teeth, an adjusting spring and an adjusting rod, wherein the generator comprises a base, a generator input hollow shaft and a generator shell; the wind energy capture efficiency can be improved and the generated energy can be increased through the matching of the structures, and the problems that the concentricity of the long transmission chain central axis of the double-wind-wheel wind generating set is difficult to install and the rotating speed of the double wind wheels is difficult to control synchronously are solved.
Description
Technical Field
The invention belongs to the technical field of double-wind-wheel wind power generation, and particularly relates to a double-wind-wheel double-gearbox wind power generator set.
Background
With the development of wind power generation technology, the diameter of a wind wheel of an existing wind generating set is larger and larger, and the capacity of the wind generating set is also larger and larger, so that the development difficulty of the wind power generation technology is greatly increased, and particularly, the development of the wind generating set with larger capacity is more limited.
The generator sets commonly used in the market mostly use single-wind-wheel wind driven generators, the wind catching efficiency CP value of the generator sets is between 0.42 and 0.48, the wind catching efficiency CP value of the double-wind-wheel wind driven generator set can reach between 0.64 and 0.78, the efficiency is improved by 1.5 times, the generated energy is improved by 1.6 times, and the wind catching efficiency CP value is greatly improved compared with a Shan Fenglun wind driven generator.
Referring to patent document with publication number CN114718801a, a double-half direct-drive type double-wind-wheel wind generating set is characterized by comprising: the wind power generation system comprises a first generator, a second generator, a tower, a front main shaft, a rear main shaft, a cabin, a front wind wheel and a rear wind wheel which are driven in a semi-direct mode, a first gear box connected with the front wind wheel and the first generator, and a second gear box connected with the rear wind wheel and the second generator; in the method, two single wind turbine sets are reversely and repeatedly assembled, and the combination of two generators and two converters is used, so that the efficiency of each generator is lost by 5 percent, and the efficiency of each converter is lost by 5 percent; on the other hand, because the distance between the generator and the two wind wheels of some double-wind-wheel wind generating sets used in the market needs a certain length, the problems that the concentricity of a central shaft is difficult to install and the rotating speed of the double wind wheels is difficult to control synchronously due to the long transmission chain length of the double wind-wheel wind generating sets are easily caused, and therefore the double wind-wheel double-gearbox wind generating set is provided.
Disclosure of Invention
The invention aims to: in order to improve wind energy capture efficiency, increase the generated energy, solve two wind wheel wind generating set transmission chain length central axis concentricity installation difficult and two wind wheel rotational speed synchro control difficult problem, this application provides a two wind wheel double-gearbox wind generating set.
The technical scheme adopted by the invention is as follows:
a wind generating set with double wind wheels and double speed-increasing boxes comprises a generator, two wind wheels and speed-increasing boxes, wherein a wind wheel main shaft system is arranged at a wind wheel torque end of each speed-increasing box, one end, far away from the speed-increasing boxes, of the wind wheel main shaft system is connected with the wind wheels, an output shaft of each speed-increasing box is fixedly connected with a torque and rotation speed balance coupler, each torque and rotation speed balance coupler comprises two coupler shells which are oppositely arranged, a coupler elastic connecting shaft is arranged on one side, far away from each coupler shell, a coupler coupling tooth is arranged at the center of the inner part of one side, close to each coupler shell, of each coupler coupling tooth, adjusting springs are arranged at two ends of each coupler coupling tooth, and adjusting rods are connected to the outer surfaces of the adjusting springs, the generator is including base and generator input hollow shaft, the last fixed surface of base is connected with generator housing, the end cover is installed to generator housing's both sides face, two the surface mid-mounting of end cover has the bearing, generator housing's internally mounted has generator rotor and generator stator, install generator input hollow shaft in generator stator's the inside centre bore, the both ends of generator input hollow shaft are passed the end cover with behind the bearing with the shaft coupling casing is connected, just generator input hollow shaft is close to the surface of generator with the bearing rotates to be connected, the output electric connection of generator has the converter.
In a preferred mode of the invention, the generator is a generator with a torque shaft for inputting kinetic energy at both ends.
In a preferred mode of the invention, the speed increasing ratio of the speed increasing box is between 1.
In a preferred mode of the invention, the power of the speed increasing box is 2.5MW-12MW, and the power of the generator is designed to be 5-25 MW.
In a preferred aspect of the invention, the speed increasing boxes are each provided with an output shaft clutch.
In a preferred embodiment, the gearbox is in the form of a two-stage to three-stage planetary gearbox.
In a preferred invention, the speed increasing box, the generator and the wind wheel main shaft system are all installed on a fan main machine base, and one end of the fan main machine base is also provided with a fan main bearing seat. And the main shaft of the fan and the main bearing at the other end are integrated in the speed increaser.
In a preferred mode of the invention, the fan main mount is mounted on a fan yaw bearing system, the fixed end of the fan yaw bearing system is mounted on a fan support tower, and the fan support tower is mounted on a foundation or an offshore floating platform.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. in the invention, the generator set adopts two wind wheels to capture wind energy, and compared with the currently used single-wind-wheel wind generator set, the wind energy capturing efficiency is improved by 50 percent, and the generated energy is increased by about 60 percent.
2. According to the invention, the effect of the double-wind-wheel wind generating set can be realized by adopting the combination of one generator and one converter, the conversion efficiency is lost by 10%, and the generated energy is improved to achieve the aim of realizing the double-wind-wheel wind generating.
3. According to the invention, the torque and rotating speed balance coupling is designed, so that the problems of long transmission chain, difficult installation of the concentricity of the central shaft and difficult synchronous control of the rotating speed of the double wind wheels of the double wind wheel wind turbine generator set are solved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the generator of the present invention;
fig. 3 is a schematic structural diagram of the torque-speed balance coupling of the present invention.
The labels in the figure are: the wind power generator comprises a 1-wind wheel, a 2-speed increasing box, a 3-generator, a 4-wind wheel spindle system, a 5-torque and rotating speed balance coupling, a 6-output shaft clutch, a 7-fan yaw bearing system, an 8-fan supporting tower, a 9-fan main machine seat, a 10-fan main bearing seat, a 31-base, a 32-generator shell, a 33-end cover, a 34-generator rotor, a 35-generator stator, a 36-bearing, a 37-generator input hollow shaft, a 51-coupling shell, a 52-coupling elastic connecting shaft, 53-coupling teeth, 54-adjusting springs and 55-adjusting rods.
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 embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A double-wind-wheel double-gearbox wind generating set according to an embodiment of the invention will be described in detail with reference to fig. 1 to 3.
Example (b):
referring to fig. 1-3, a double-wind wheel double-speed-increasing box wind generating set comprises a generator 3, two wind wheels 1 and two speed-increasing boxes 2, wherein the speed-increasing boxes 2 are respectively in a two-stage to three-stage planetary speed-increasing box structure, the speed-increasing boxes 2 are respectively provided with an output shaft clutch 6, the speed-increasing ratio of the speed-increasing boxes 2 is 1; the speed increasing box 2, the generator 3 and the wind wheel spindle system 4 are all installed on a fan main machine seat 9, a fan main bearing seat 10 is further installed at one end of the fan main machine seat 9, the fan main machine seat 9 is installed on a fan yaw bearing system 7, the fixed end of the fan yaw bearing system 7 is installed on a fan supporting tower 8, the fan supporting tower 8 is installed on a foundation or a sea floating platform, and when sea wind blows two wind wheels 1 to rotate, the two wind wheels 1 can obtain wind energy.
Referring to fig. 1-3, a wind wheel torque end of the speed increasing box 2 is provided with a wind wheel main shaft system 4, and when sea wind blows two wind wheels 1 to rotate, the two wind wheels 1 can drive the wind wheel torque end of the speed increasing box 2 to rotate through the wind wheel main shaft system 4; one end of the wind wheel main shaft system 4, which is far away from the speed increasing box 2, is connected with the wind wheel 1, the output shaft of the speed increasing box 2 is fixedly connected with a torque and rotation speed balancing coupler 5, and the wind wheel torque end of the speed increasing box 2 drives the output shaft of the speed increasing box 2 to rotate.
Referring to fig. 1-3, the generator 3 includes a base 31 and a hollow generator input shaft 37, and the generator 3 is a generator with torque input shafts at both ends so that the kinetic energy from both ends can be transmitted to the generator 3 with torque; the upper surface of the base 31 is fixedly connected with a generator housing 32, two side surfaces of the generator housing 32 are provided with end covers 33, the middle parts of the outer surfaces of the two end covers 33 are provided with bearings 36, a generator rotor 34 and a generator stator 35 are arranged inside the generator housing 32, a generator input hollow shaft 37 is arranged in an inner central hole of the generator stator 35, two ends of the generator input hollow shaft 37 are connected with a coupling housing 51 after penetrating through the end covers 33 and the bearings 36, the outer surface of the generator input hollow shaft 37 close to the generator 3 is rotatably connected with the bearings 36, an output shaft of the speed increasing box 2 rotates, the generator input hollow shaft 37 of the generator 3 is driven to rotate through the torque and rotation speed balancing coupling 5, the rotating generator input hollow shaft 37 can drive the generator rotor 34 to rotate in the generator stator 35 to cut magnetic lines, so as to generate induced potential, and the induced potential is led out through a connecting terminal; the output end electric connection of generator 3 has the converter, it stores to become DC power supply with alternating current power supply through the converter, and two wind wheels 1 in this application catch wind energy, it improves 50% to compare the single wind wheel wind generating set who uses at present and catch wind energy efficiency, increase the generated energy about 60%, compare simultaneously with the combination with two generators and two converters on the market, adopt the cooperation of a generator 3 and a converter to practice thrift wind energy in the invention, conversion efficiency loses 10%, it reaches the mesh that has realized two wind wheel wind power generation to improve the generated energy.
Referring to fig. 1-3, the torque and rotation speed balancing coupling 5 includes two coupling housings 51 disposed oppositely, one side of the two coupling housings 51 far away is mounted with a coupling elastic connection shaft 52, the inner center of one side of the two coupling housings 51 near is mounted with a coupling tooth 53, two ends of the coupling tooth 53 are provided with adjusting springs 54, the outer surface of the adjusting springs 54 is connected with an adjusting rod 55, the torque and rotation speed balancing coupling 5 is a key component for realizing double wind wheel wind power generation, because the distance between the generator 3 and the two wind wheels 1 needs a certain length, about 15m-25m, or even longer, the torque and rotation speed balancing coupler 5 adopts the coupler shell 51 with a thin structure and is mutually connected through the coupler coupling teeth 53, the adjusting spring 54 is arranged behind each coupler coupling tooth 53, and the elastic contact force of the adjusting spring 54 can be adjusted through the adjusting rod 55, so that the structure avoids the problem that the coupler coupling teeth 53 can be disconnected to one end with small torque under the condition that the bidirectional torque of the generator 3 is extremely asymmetric, other main connecting pieces cannot be damaged, and the problems of long transmission chain of the double-wind-wheel wind turbine generator set, difficult installation of the concentricity of a central shaft and difficult synchronous control of the rotation speed of the double wind wheels are solved.
The application provides an implementation principle of two wind wheel two speed increasing box wind generating set embodiments does:
when the double-wind-wheel double-gearbox wind generating set is used, a fan supporting tower 8 is required to be installed on a foundation or an offshore floating platform, when sea wind blows two wind wheels 1 to rotate, the two wind wheels 1 can drive a wind wheel torque end of a gearbox 2 to rotate through a wind wheel main shaft system 4, the wind wheel torque end of the gearbox 2 can drive an output shaft of the gearbox 2 to rotate, then a generator input hollow shaft 37 of a generator 3 is driven to rotate through a torque and rotation speed balance coupling 5, the rotating generator input hollow shaft 37 can drive a generator rotor 34 to rotate in a generator stator 35 to cut magnetic lines of force, induced potentials are generated, the induced potentials are led out through a wiring terminal, an alternating current power supply is changed into a direct current power supply through a converter to store the wind energy, the capturing efficiency of the two wind wheels 1 in the application is improved by 50% compared with that of a currently used single-wind-wheel double-gearbox wind generating set, the generated energy is increased by about 60%, meanwhile, the combination of two generators and two converters on the market is adopted, the combination of one generator 3 and one converter saves the wind energy, the loss of the conversion efficiency, the double-wheel wind generating set is improved, and the generated energy generation purpose of double-wheel power generation is achieved.
On the other hand, the torque and rotation speed balance coupling 5 is a key component for realizing double-wind-wheel wind power generation, because the distance between the generator 3 and the two wind wheels 1 needs a certain length, about 15m to 25m, and even longer, the torque and rotation speed balance coupling 5 in the invention adopts a coupling shell 51 with a thin structure and is connected with each other through coupling teeth 53, an adjusting spring 54 is arranged behind each coupling tooth 53, the elastic contact force of the adjusting spring 54 can be adjusted through an adjusting rod 55, and the structure avoids the problem that the coupling teeth 53 can be disconnected towards one end with small torque and other main connecting pieces are not damaged under the condition that the bidirectional torque of the generator 3 is extremely asymmetric, thereby solving the problems that the transmission chain length of the double-wind-wheel wind turbine generator set, the concentricity of a central shaft is difficult to install and the synchronous control of the rotating speed of the double wind wheels is difficult.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a two wind wheel two speed-increasing box wind generating set, includes generator (3) and two wind wheels (1) and speed-increasing box (2), its characterized in that: the wind wheel torque end of the speed increasing box (2) is provided with a wind wheel spindle system (4), the wind wheel spindle system (4) is far away from one end of the speed increasing box (2) and the wind wheel (1) are connected, an output shaft of the speed increasing box (2) is fixedly connected with a torque and rotation speed balance coupling (5), the torque and rotation speed balance coupling (5) comprises two coupling shells (51) which are arranged oppositely, a coupling elastic connecting shaft (52) is arranged on one side surface away from the coupling shells (51), a coupling tooth (53) is arranged at one inner center of the side close to the coupling shells (51), adjusting springs (54) are arranged at two ends of the coupling tooth (53), the outer surface of each adjusting spring (54) is connected with an adjusting rod (55), the generator (3) comprises a base (31) and a generator input hollow shaft (37), the upper surface of the base (31) is fixedly connected with a generator shell (32), end covers (33) are arranged on two side surfaces of the generator shell (32), a bearing (36) is arranged at the middle part of the outer surface of the end cover (33), a generator rotor (34) and a stator (35) and a stator hole of the generator shell (35) are arranged in the inner hole of the generator, the two ends of the generator input hollow shaft (37) penetrate through the end cover (33) and the bearing (36) and then are connected with the coupling shell (51), the outer surface of the generator input hollow shaft (37) close to the generator (3) is rotatably connected with the bearing (36), and the output end of the generator (3) is electrically connected with a converter.
2. The double-wind-wheel double-gearbox wind generating set according to claim 1, characterized in that: the generator (3) is a generator with torque shafts for inputting kinetic energy at two ends.
3. The double-wind-wheel double-gearbox wind generating set according to claim 1, characterized in that: the speed increasing ratio of the speed increasing box (2) is between 1 and 65-1, and the rotating speed of an input shaft of the speed increasing box (2) is between 6 and 12 revolutions.
4. The double-wind-wheel double-gearbox wind generating set according to claim 1, characterized in that: the power of the speed increasing box (2) is between 2.5MW and 12MW, and the power of the generator (3) is designed to be between 5MW and 25 MW.
5. The double-wind-wheel double-gearbox wind generating set according to claim 1, characterized in that: the speed increasing boxes (2) are respectively provided with an output shaft clutch (6).
6. The double-wind-wheel double-gearbox wind generating set according to claim 1, characterized in that: the speed increasing boxes (2) are in the structural forms of two-stage to three-stage planetary speed increasing boxes respectively.
7. The wind generating set with double wind wheels and double speed increasing boxes according to claim 1, characterized in that: the wind wheel main shaft system is characterized in that the speed increasing box (2), the generator (3) and the wind wheel main shaft system (4) are installed on a fan main machine seat (9), and a fan main bearing seat (10) is further installed at one end of the fan main machine seat (9).
8. The double-wind-wheel double-gearbox wind generating set according to claim 7, characterized in that: the wind turbine generator is characterized in that the wind turbine generator main machine base (9) is installed on a wind turbine yaw bearing system (7), the fixed end of the wind turbine yaw bearing system (7) is installed on a wind turbine supporting tower (8), and the wind turbine supporting tower (8) is installed on a foundation or an offshore floating platform.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211479827.6A CN115977888A (en) | 2022-11-24 | 2022-11-24 | Double-wind-wheel double-speed-increasing-box wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211479827.6A CN115977888A (en) | 2022-11-24 | 2022-11-24 | Double-wind-wheel double-speed-increasing-box wind generating set |
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| CN115977888A true CN115977888A (en) | 2023-04-18 |
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2022
- 2022-11-24 CN CN202211479827.6A patent/CN115977888A/en active Pending
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Application publication date: 20230418 |