CN114922781B - Transmission system of large vertical axis wind turbine - Google Patents
Transmission system of large vertical axis wind turbine Download PDFInfo
- Publication number
- CN114922781B CN114922781B CN202210597108.8A CN202210597108A CN114922781B CN 114922781 B CN114922781 B CN 114922781B CN 202210597108 A CN202210597108 A CN 202210597108A CN 114922781 B CN114922781 B CN 114922781B
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- sleeve
- bevel gear
- truss
- vertical
- bearing
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 39
- 238000010248 power generation Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 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
- F03D15/00—Transmission of mechanical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor the axis being vertical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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- Engineering & Computer Science (AREA)
- 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 transmission system of a large vertical axis wind turbine, which comprises a tower column fixedly connected with a tower foundation and an impeller, wherein the outside of the tower column is sequentially connected with a top sleeve, a truss structure and a bottom sleeve from top to bottom; the bottom of the bottom sleeve is connected with a cabin fixedly connected with the tower foundation, and a part of the bottom sleeve extending into the cabin is provided with a transmission power generation mechanism in a matched manner with the inside of the cabin; the transmission power generation mechanism comprises a spiral bevel gear steering device, a transmission shaft and a generator, wherein a horizontal bevel gear of the spiral bevel gear steering device is fixedly connected to the bottom end of the bottom sleeve, and a support bearing and a shaft end retainer ring are arranged on a rotating shaft of a vertical bevel gear of the spiral bevel gear steering device; the transmission shaft is provided with a speed increasing box, and the transmission shaft is also provided with a jaw clutch and a brake disc between the generator and the speed increasing box. The invention aims to provide a power generation mode of changing the rotation of a tower column along with a blade, which has strong stability and is suitable for a transmission system of a large vertical axis wind turbine.
Description
Technical Field
The invention relates to the technical field of renewable energy source utilization, in particular to a transmission system of a large vertical axis wind turbine.
Background
The wind turbine mainly comprises a horizontal axis wind turbine and a vertical axis wind turbine, and compared with the horizontal axis wind turbine, the vertical axis wind turbine has the advantages of difficult breakage of blades, good fatigue performance, low gravity center, good stability, good adaptability to severe environments such as strong wind and storm, low installation, maintenance and repair costs, no need of installing a windward adjusting system, low cost, high wind field utilization rate, easy large-scale development and the like. However, most conventional vertical axis wind turbines have blades fixed to a tower, which rotates with the blades as the wind turbine generates electricity. For a large megawatt fan, the tower is high, and the rotation of the tower will create additional load and have instability. Therefore, a strong stability is needed, and the power generation mode that the tower column rotates along with the blades is changed, so that the power generation system is suitable for a transmission system of a large vertical axis wind turbine.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and aims to provide a power generation mode with strong stability and changed rotation of a tower column along with a blade, which is suitable for a transmission system of a large vertical axis wind turbine.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
The transmission system of the large vertical axis wind turbine comprises a tower column fixedly connected with a tower foundation and an impeller, wherein the outside of the tower column is sequentially connected with a top sleeve, a truss structure and a bottom sleeve from top to bottom, and the impeller is connected with the top sleeve and the bottom sleeve through stay bars; the inner part of the top sleeve is symmetrically provided with first bearings, the inner ring of the first bearings is fixedly connected with the tower column, the outer ring of the first bearings is fixedly connected with the top sleeve, a drum brake is arranged between the first bearings of the top sleeve, the outer end of the first bearing positioned at the upper layer is provided with a labyrinth sealing device, and the outer end of the first bearing positioned at the lower layer is provided with a first end cover;
The bottom sleeve is internally and symmetrically provided with a second bearing, the inner ring of the second bearing is fixedly connected with the tower column, the outer ring of the second bearing is fixedly connected with the bottom sleeve, a drum brake is arranged between the second bearings, the bottom of the bottom sleeve is connected with a cabin fixedly connected with the tower foundation, and a transmission power generation mechanism is arranged in the cabin in a matched manner on the part of the bottom sleeve extending into the cabin;
the transmission power generation mechanism comprises a spiral bevel gear steering device, a transmission shaft and a power generator, a horizontal bevel gear of the spiral bevel gear steering device is fixedly connected to the bottom end of the bottom sleeve, a third bearing is arranged between the horizontal bevel gear and the tower column, an inner ring of the third bearing is fixedly connected with the tower column, an outer ring of the third bearing is fixedly connected with the horizontal bevel gear, and a supporting bearing and a shaft end retainer ring are arranged on a rotating shaft of a vertical bevel gear of the spiral bevel gear steering device; the transmission shaft is provided with a speed increasing box, the low-speed end of the speed increasing box is connected with a rotating shaft of the vertical bevel gear through a flexible coupling, the high-speed end of the speed increasing box is connected with the generator through the transmission shaft, the transmission shaft is further provided with a jaw clutch and a brake disc between the generator and the speed increasing box, and the brake disc is arranged adjacent to the generator.
Further, an annular sealing device is arranged at the joint of the outer wall of the bottom sleeve and the engine room.
Further, the support bearing, the speed increasing box and the generator are all connected with the bottom of the engine room through the support.
Further, truss structure and the coaxial setting of king-post, truss structure comprises vertical truss, horizontal truss and slant truss, and vertical truss is cylindricly totally provided with four, and vertical truss's top and the bottom fixed connection of first end cover, vertical truss's bottom and the telescopic labyrinth seal top fixed connection of bottom, and horizontal truss is annular structure and equidistant vertical range, and the slant truss is cylindricly totally provided with four, and the inclination of slant truss is 30 with vertical contained angle, fixed connection respectively between adjacent vertical truss.
Compared with the prior art, the invention has the following beneficial effects:
According to the invention, when the wind turbine works, the tower column does not rotate, but the sleeve directly connected with the impeller rotates, so that the transmission power generation mechanism connected with the sleeve is driven to work, the transmission power generation mechanism is positioned in the engine room above the tower foundation, the speed increasing box, the jaw clutch, the brake disc and the generator in the engine room are horizontally arranged, and then the spiral bevel gear steering device is used for converting the horizontal rotation of the impeller into the vertical rotation, so that the stability of the tower column is improved, the extra load generated by the rotation of the tower column is eliminated, the safety and the reliability are improved, the construction cost of the tower column is reduced, and the wind turbine is very suitable for large wind turbines.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the top sleeve of the present invention;
FIG. 3 is a schematic diagram of a transmission power generation mechanism according to the present invention;
fig. 4 is a schematic structural view of a truss structure according to the present invention.
Reference numerals:
The device comprises a 1-tower column, a 2-stay, a 3-truss structure, a 4-impeller, a 5-bottom sleeve, a 6-transmission power generation mechanism, a 7-cabin, an 8-top sleeve, a 9-labyrinth seal device, a 10-first end cover, an 11-first bearing, a 12-drum brake, a 13-second bearing, a 14-annular seal device, a 15-third bearing, a 16-spiral bevel gear steering device, a 17-support bearing, a 18-shaft end retainer ring, a 19-flexible coupling, a 20-speed increasing box, a 21-jaw clutch, a 22-brake disc, a 23-generator, a 24-transmission shaft, a 25-bracket, a 26-vertical truss, a 27-horizontal truss and a 28-oblique truss.
Detailed Description
The invention will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 4, the transmission system of the large vertical axis wind turbine comprises a tower column 1 fixedly connected with a tower foundation and an impeller 4, wherein a top sleeve 8, a truss structure 3 and a bottom sleeve 5 are sequentially connected with the outside of the tower column 1 from top to bottom, and the impeller 4 is connected with the top sleeve 8 and the bottom sleeve 5 through a stay bar 2; the inner ring of the first bearing 11 is fixedly connected with the tower column 1, the outer ring of the first bearing 11 is fixedly connected with the top sleeve 8, a drum brake 12 is arranged between the first bearings 11 of the top sleeve 8, a labyrinth sealing device 9 is arranged at the outer end of the first bearing 11 positioned at the upper layer, and a first end cover 10 is arranged at the outer end of the first bearing 11 positioned at the lower layer;
The inside of the bottom sleeve 5 is symmetrically provided with a second bearing 13, the inner ring of the second bearing 13 is fixedly connected with the tower column 1, the outer ring of the second bearing 13 is fixedly connected with the bottom sleeve 5, a drum brake 12 is arranged between the second bearings 13 of the bottom sleeve 5, the bottom of the bottom sleeve 5 is connected with a cabin 7 fixedly connected with a tower foundation, and a part of the bottom sleeve 5 extending into the cabin 7 is provided with a transmission power generation mechanism 6 in a matched manner with the interior of the cabin 7;
The transmission power generation mechanism 6 comprises a spiral bevel gear steering device 16, a transmission shaft 24 and a power generator 23, a horizontal bevel gear of the spiral bevel gear steering device 16 is fixedly connected to the bottom end of the bottom sleeve 5, a third bearing 15 is arranged between the horizontal bevel gear and the tower 1, the inner ring of the third bearing 15 is fixedly connected with the tower 1, the outer ring of the third bearing 15 is fixedly connected with the horizontal bevel gear, and a supporting bearing 17 and a shaft end retainer ring 18 are arranged on the rotating shaft of a vertical bevel gear of the spiral bevel gear steering device 16; the transmission shaft 24 is provided with a speed increasing box 20, the low-speed end of the speed increasing box 20 is connected with a rotating shaft of the vertical bevel gear through a flexible coupling 19, the high-speed end of the speed increasing box 20 is connected with a generator 23 through the transmission shaft 24, the transmission shaft 24 is further provided with a jaw clutch 21 and a brake disc 22 between the generator 23 and the speed increasing box 20, and the brake disc 22 is arranged adjacent to the generator 23.
The connection part between the outer wall of the bottom sleeve 5 and the engine room 7 is provided with an annular sealing device 14, a part of the bottom sleeve 5 extending into the engine room 7 is in clearance fit with the engine room 7, and the annular sealing device 14 can strengthen the tightness of the clearance.
The supporting bearing 17, the speed increasing box 20 and the generator 23 are all connected with the bottom of the engine room 7 through the support 25, so that the speed increasing box 20 and the generator 23 in the engine room 7 can be horizontally arranged, and the overall stability is improved.
The truss structure 3 and the tower column 1 are coaxially arranged, the truss structure 3 is formed by four vertical trusses 26, horizontal trusses 27 and inclined trusses 28, the number of the vertical trusses 26 is four in a cylindrical mode, the top ends of the vertical trusses 26 are fixedly connected with the bottom ends of the first end caps 10, the bottom ends of the vertical trusses 26 are fixedly connected with the top ends of the labyrinth type sealing devices 9 of the bottom sleeves 5, the horizontal trusses 27 are of annular structures and are vertically arranged at equal intervals, the number of the inclined trusses 28 is four in a cylindrical mode, and the inclined directions of the inclined trusses 28 and the included angles of the vertical directions are 30 degrees, and are fixedly connected between the adjacent vertical trusses 26 respectively. The truss structure 3 is used for stabilizing the connection between the top sleeve 8 and the bottom sleeve 5, transmitting the rotation of the bottom sleeve 5 upwards, and the truss is low in construction cost and light in weight, and reduces the load of the transmission power generation mechanism 6.
The engine room 7 is of a hollow cylindrical structure and is used for protecting an internal transmission power generation mechanism 6, the bottom of the engine room 7 is fixedly connected with a tower foundation, and a round hole which can enable the lower half part of the bottom sleeve 5 to extend into the engine room 7 is formed in the center of the top. The top sleeve 8, the top of bottom sleeve 5 play the sealed effect by labyrinth seal 9, and labyrinth seal 9 comprises two sealing bodies in this embodiment, has the protruding and sunken of interengagement between the sealing body, can form a plurality of sealed faces, and sealed effect is good.
The power generation mode of the invention is as follows:
The impeller 4 rotates to drive the top sleeve 8 and the bottom sleeve 5 to rotate, as the second bearing 13 is arranged between the bottom sleeve 5 and the tower column 1, the first bearing 11 is arranged between the top sleeve 8 and the tower column 1, the bottom sleeve 5, the truss structure 3 and the top sleeve 8 rotate relative to the tower column 1, the horizontal bevel gear of the spiral bevel gear steering device 16 is driven to actively rotate, and the horizontal bevel gear transmits the rotation to the vertical bevel gear. The vertical bevel gear drives the transmission shaft 24 to rotate, and the vertical bevel gear and the speed increasing box 20 are input into the generator 23 to generate electricity. The tower column 1 only plays a supporting role, so that the stability of the tower column 1 is improved, the extra load generated by rotation of the tower column 1 is eliminated, the safety and reliability are improved, the structural strength requirement of the tower column 1 can be relatively reduced, and the tower column is very suitable for large-scale wind turbines.
When the power generation needs to be stopped, the brake disc 22 and the drum brake 12 brake the generator 23, the top sleeve 8 and the bottom sleeve 5, respectively.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. The utility model provides a large-scale vertical axis wind turbine transmission system, includes tower column (1) and impeller (4) that link firmly with the tower footing, its characterized in that: the outside of the tower column (1) is sequentially connected with a top sleeve (8), a truss structure (3) and a bottom sleeve (5) from top to bottom, and the impeller (4) is connected with the top sleeve (8) and the bottom sleeve (5) through a supporting rod (2); the novel anti-collision device is characterized in that first bearings (11) connected between the top sleeve (8) and the tower column (1) are symmetrically arranged in the top sleeve (8), a drum brake (12) is arranged between the first bearings (11) in the top sleeve (8), a labyrinth sealing device (9) is arranged at the outer end of the first bearing (11) positioned at the upper layer, and a first end cover (10) is arranged at the outer end of the first bearing (11) positioned at the lower layer;
The device is characterized in that second bearings (13) connected between the bottom sleeve (5) and the tower column (1) are symmetrically arranged in the bottom sleeve (5), a drum brake (12) is arranged between the second bearings (13) in the bottom sleeve (5), a cabin (7) fixedly connected with a tower foundation is connected to the bottom of the bottom sleeve (5), and a transmission power generation mechanism (6) is arranged in the part, extending into the cabin (7), of the bottom sleeve (5) in a matched mode with the interior of the cabin (7);
the transmission power generation mechanism (6) comprises a spiral bevel gear steering device (16), a transmission shaft (24) and a generator (23), wherein a horizontal bevel gear of the spiral bevel gear steering device (16) is fixedly connected to the bottom end of the bottom sleeve (5), a third bearing (15) is arranged between the horizontal bevel gear and the tower column (1), an inner ring of the third bearing (15) is fixedly connected with the tower column (1), an outer ring of the third bearing (15) is fixedly connected with the horizontal bevel gear, and a supporting bearing (17) and a shaft end retainer ring (18) are arranged on a rotating shaft of a vertical bevel gear of the spiral bevel gear steering device (16); be provided with speed increasing box (20) on transmission shaft (24), speed increasing box (20) low-speed end links to each other with vertical bevel gear's pivot through flexible coupling (19), and speed increasing box (20) high-speed end links to each other with generator (23) through transmission shaft (24), and transmission shaft (24) still are provided with jaw clutch (21) and brake disc (22) between generator (23) and speed increasing box (20), and brake disc (22) set up adjacent with generator (23).
2. A large vertical axis wind turbine drive system as defined in claim 1 wherein: an annular sealing device (14) is arranged at the joint of the outer wall of the bottom sleeve (5) and the engine room (7).
3. A large vertical axis wind turbine drive system as defined in claim 1 wherein: the support bearing (17), the speed increasing box (20) and the generator (23) are connected with the bottom of the engine room (7) through the support (25).
4. A large vertical axis wind turbine drive system as defined in claim 1 wherein: truss structure (3) and column (1) coaxial setting, truss structure (3) are by vertical truss (26), horizontal truss (27) and slant truss (28) constitute, vertical truss (26) are cylindric totally and are provided with four, the top of vertical truss (26) and the bottom fixed connection of first end cover (10), the bottom of vertical truss (26) and labyrinth sealing device (9) top fixed connection of bottom sleeve (5), horizontal truss (27) are annular structure and equidistant vertical range, slant truss (28) are cylindric totally and are provided with four, the inclination of slant truss (28) is 30 with the contained angle of vertical, fixed connection respectively between adjacent vertical truss (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210597108.8A CN114922781B (en) | 2022-05-19 | 2022-05-19 | Transmission system of large vertical axis wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210597108.8A CN114922781B (en) | 2022-05-19 | 2022-05-19 | Transmission system of large vertical axis wind turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114922781A CN114922781A (en) | 2022-08-19 |
| CN114922781B true CN114922781B (en) | 2024-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210597108.8A Active CN114922781B (en) | 2022-05-19 | 2022-05-19 | Transmission system of large vertical axis wind turbine |
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| Country | Link |
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| CN (1) | CN114922781B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217270620U (en) * | 2022-05-19 | 2022-08-23 | 天津大学 | Large vertical axis wind turbine transmission system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550917B (en) * | 2009-03-27 | 2011-01-05 | 邓允河 | Vertical wind power generator |
| CN206111433U (en) * | 2016-09-23 | 2017-04-19 | 国网山东省电力公司电力科学研究院 | Vertical axis aerogenerator rotation synchronization mechanism |
| CN206647210U (en) * | 2016-11-28 | 2017-11-17 | 天津大学 | A kind of offshore floating type vertical axis aerogenerator |
| CN111706470A (en) * | 2020-07-14 | 2020-09-25 | 高宇 | Slide rail type multistage vertical wind power generation device |
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- 2022-05-19 CN CN202210597108.8A patent/CN114922781B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217270620U (en) * | 2022-05-19 | 2022-08-23 | 天津大学 | Large vertical axis wind turbine transmission system |
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