CN112901422B - Passive wind-aligning fan supporting structure without yaw system and wind generating set - Google Patents
Passive wind-aligning fan supporting structure without yaw system and wind generating set Download PDFInfo
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- CN112901422B CN112901422B CN202110282723.5A CN202110282723A CN112901422B CN 112901422 B CN112901422 B CN 112901422B CN 202110282723 A CN202110282723 A CN 202110282723A CN 112901422 B CN112901422 B CN 112901422B
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- tower
- guide rail
- circular guide
- wind
- sliding block
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
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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
- Y02E10/728—Onshore wind turbines
Abstract
The invention discloses a supporting structure of a passive wind aligning fan of a yaw-free system and a wind generating set, and the supporting structure comprises a tower system, a traveling gear system and a circular guide rail, wherein the tower system comprises a first tower, a second tower, a third tower and a fourth tower; the bottom of the first tower, the bottom of the second tower and the bottom of the third tower are connected with the circular guide rail through a traveling wheel system, the tops of the first tower, the second tower and the third tower are connected with each other to form a bottom tower, the fourth tower is connected with the top end of the bottom tower, the radian between the bottom ends of the first tower and the second tower is smaller than pi, and the projections of the top ends of the first tower, the second tower and the third tower are located on the diameter of the circular guide rail; the wind energy utilization rate and the equivalent annual generation hours of land low wind speed areas are improved; the downwind fan without a yaw bearing is adopted, so that the rigidity and frequency of the whole supporting structure are improved, and the weight of the supporting structure is reduced; the height of the center of the hub of the tower and the diameter of the wind wheel are increased while the tower clearance is ensured.
Description
Technical Field
The invention belongs to the field of wind generating sets and supporting structures, and particularly relates to a supporting structure of a yaw-bearing-free passive air alignment fan and a wind generating set.
Background
In land low wind speed areas, wind generating sets usually adopt a support structure scheme of a mixed tower or a flexible tower in order to obtain larger wind energy resources, and the maximum height in China is about 160m high currently. However, as fan capacity and wind turbine diameter increase, the tower height requirements increase. The 1 st order frequency of the impeller at the rated rotating speed is called 1P; when the frequency of the tower is above the 1 st order frequency of the impeller, the tower is a traditional tower, and when the frequency of the tower is below the 1 st order frequency, the tower is a flexible tower.
The upper part of the steel-concrete tower is a steel tower section, and the lower part of the steel-concrete tower is a prestressed concrete section, so that compared with a flexible tower, the steel-concrete tower has higher free vibration frequency, and the rigidity and the strength are basically the same as those of the traditional tower.
When the concrete tower is adopted, the problems that the precision of the precast concrete template is difficult to control, the stress at the joint of the lower concrete and the upper steel tower is concentrated, the cost of prestressed reinforcement is high and the like exist; in the process of adopting the flexible tower, the problems that the frequency of the whole supporting structure is low, vortex-induced vibration is easy to generate, the weight of the tower is large and the like exist.
Because the fan shakes greatly when the top of the high tower is affected by extreme weather environment, if a yaw system is arranged, the load of the yaw system is large; the open-air high altitude often receives the invasion and attack of sand blown by the wind, the corruption of condensate water, and difficult the early inefficacy that causes sealed, simultaneously, the operation and maintenance degree of difficulty of open-air high tower is high, and the expense is big, in case fan driftage system position damages, and the restoration degree of difficulty is big, and is with high costs.
There is a need to design a new support structure to be suitable for in the low wind speed area, and can reduce or avoid the fan problem that brings because the damage of driftage bearing realizes initiatively driftage.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a supporting structure of a non-yaw system passive wind-facing fan, which has a simple structure and is free of a yaw system; the supporting structure system is composed of three truss type towers, and the overall rigidity is high; and a traveling wheel system is arranged at the bottom of the tower frame, so that the passive yawing and wind aligning functions of the fan system are realized.
In order to achieve the purpose, the invention adopts the technical scheme that: a supporting structure of a passive wind aligning fan without a yaw system comprises a tower system, a traveling gear system and a circular guide rail, wherein the tower system comprises a first tower, a second tower, a third tower and a fourth tower; the bottom of the first tower, the bottom of the second tower and the bottom of the third tower are connected with the circular guide rail through a traveling wheel system, the tops of the first tower, the second tower and the third tower are connected with each other to form a bottom tower, the fourth tower is connected with the top end of the bottom tower, the radian between the bottom ends of the first tower and the second tower is smaller than pi, and the projections of the top ends of the first tower, the second tower and the third tower are located on the diameter of the circular guide rail.
The fourth tower is in a truss type or steel cylinder structure, and the first tower, the second tower and the third tower are in truss structures.
The angle between the horizontal projections of the first tower and the second tower is 2 alpha, alpha is more than or equal to 45 degrees and less than or equal to 75 degrees, the radius of the circular guide rail is R, and R is more than or equal to 5m and less than or equal to 40 m.
The traveling wheel system comprises a sliding block, the sliding block is slidably arranged in the circular guide rail, a ball is arranged between the sliding block and the circular guide rail, and a base plate is arranged at the top of the sliding block; there is the casing seal circular guide rail top, the casing sets up along circular guide rail, and the casing both ends all are connected with the slider.
The traveling wheel system comprises a sliding block, a bearing is arranged on the sliding block, and the bearing is arranged in the circular guide rail in a rolling mode.
The surfaces of the tower system, the traveling gear system and the circular guide rail are all provided with anticorrosive coatings.
The circular guide rail adopts channel steel.
The traveling wheel system comprises a sliding block, wherein a roller, a driving motor, a speed reducer and a controller are arranged on the sliding block, the output shaft of the driving motor is connected with the power input shaft of the speed reducer, the power output shaft of the speed reducer is connected with a roller wheel shaft, the roller is arranged in a circular guide rail, and the control input end of the driving motor is connected with the output end of the controller.
A wind generating set adopting the supporting structure is characterized in that a fan system is arranged at the top end of a fourth tower, the fan system adopts a downwind fan without a yaw bearing, and the plane where a wind wheel is located, a cabin and the relative position of the fourth tower are fixed.
Based on the installation method of the wind generating set, the tower system, the traveling gear system and the circular guide rail component are all prefabricated in a factory, and the method specifically comprises the following steps:
laying a circular guide rail on a foundation;
installing a walking wheel system and locking;
assembling a first tower, a second tower, a third tower and a fourth tower;
installing a tower structure system comprising a first tower, a second tower, and a third tower;
installing a fourth tower;
the installation of the engine room and the blades is finished within 3 days after the fourth tower is installed;
and debugging after the installation of the electric cabinet body and the cable is finished.
Compared with the prior art, the invention has at least the following beneficial effects:
the invention can improve the structural rigidity, is suitable for land wind fields with the hub center height of 300m, and can improve the wind energy utilization rate and the equivalent annual generation hours in land low wind speed areas; the first tower, the second tower and the third tower arranged at the lower part of the fourth tower form a three-leg stable structure, so that the rigidity and frequency of the whole supporting structure can be improved, the weight of the supporting structure is reduced, and the construction cost is reduced; by adopting the sectional tower, the center height of a hub of the tower and the diameter of a wind wheel can be increased on the premise of ensuring the clearance of the tower; the walking wheel system is a passive yawing wind-aligning system, and yawing power does not need to be actively controlled; the tower system is convenient to transport and construct components, the truss type tower can be prefabricated, and modular assembly is carried out on site, so that the transportation and construction cost is reduced.
Furthermore, the first tower frame, the second tower frame, the third tower frame and the fourth tower frame are truss-type tower frames, the production process is mature, all prefabrication in a factory can be realized, and the site construction is convenient.
Furthermore, the walking wheel system comprises a sliding block, a roller, a driving motor, a speed reducer and a controller are arranged on the sliding block, the output shaft of the driving motor is connected with the power input shaft of the speed reducer, the power output shaft of the speed reducer is connected with a roller wheel shaft, the roller is arranged in a circular guide rail, and the control input end of the driving motor is connected with the output end of the controller and can be suitable for working conditions of large turbulence, large wind direction change and the like.
According to the wind generating set based on the supporting structure, the fan system adopts the downwind fan without a yaw bearing, the relative positions of the plane where the wind wheel is located, the engine room and the tower are fixed, the manufacturing cost of the fan is reduced, and the failure rate is reduced.
Drawings
FIG. 1 is a schematic view of a support structure for a yaw-bearing-free passive convection wind turbine.
FIG. 2 is a schematic view of a road wheel system for a yaw-bearing free passive convection wind turbine.
Fig. 3 is a block diagram of a road wheel system.
FIG. 4 is an elevation view of a support structure for a yaw-bearing free passive convection wind turbine.
In the drawing, 1-a fan system, 2-a tower system, 3-a walking wheel system, 4-a circular guide rail, 21-a first tower, 22-a second tower, 23-a third tower, 24-a fourth tower, 31-a slide block and 32-a ball.
Detailed Description
The above and other features and advantages of the present invention will become more apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.
Referring to fig. 1, the support structure of the passive wind turbine without yaw system provided by the present invention comprises a tower system 2, a road wheel system 3 and a circular guide rail 4, wherein the tower system 2 comprises a first tower 21, a second tower 22, a third tower 23 and a fourth tower 24; the bottoms of the first tower 21, the second tower 22 and the third tower 23 are connected with the circular guide rail 4 through the traveling wheel system 3, the tops of the first tower 21, the second tower 22 and the third tower 23 are connected with each other to form a bottom tower, the top end of the bottom tower is connected with the fourth tower 24, the radian between the bottom ends of the first tower 21 and the second tower 22 is less than pi, and the projection of the top ends of the first tower 21, the second tower 22 and the third tower 23 is located on the diameter of the circular guide rail 4.
The fourth tower 24 is a truss-like or steel cylindrical structure, and the first tower 21, the second tower 22, and the third tower 23 are truss-like structures.
The angle between the horizontal projections of the first tower 21 and the second tower 22 is 2 alpha, alpha is more than or equal to 45 degrees and less than or equal to 75 degrees, the radius of the circular guide rail 4 is R, and R is more than or equal to 5m and less than or equal to 40 m.
The traveling wheel system 3 comprises a sliding block 31, the sliding block 31 is slidably arranged in the circular guide rail 4, a ball 32 is arranged between the sliding block and the circular guide rail 4, and a base plate 33 is arranged at the top of the sliding block 31.
The road wheel system 3 comprises a sliding block 31, and a bearing is arranged on the sliding block 31 and is arranged in the circular guide rail 4 in a rolling mode.
And the surfaces of the tower system 2, the traveling wheel system 3 and the circular guide rail 4 are all provided with an anticorrosive coating.
The circular guide rail 4 adopts channel steel.
The circular guide rail 4 is made of H-shaped steel, the traveling wheel system 3 comprises a sliding block 31, and the sliding block 31 is provided with two sets of bearings which are arranged in grooves of the H-shaped steel.
Considering there being the torrent great, the great operating mode of waiting of wind direction change, can be equipped with stopper, controller, generator and anemometry radar to the walking wheel system, the anemometry radar generally sets up at the top in cabin, and the anemometry radar is connected with fan control system's input, and functions such as yaw rate and the direction error control of supplementary realization active control complete machine are specific:
the traveling wheel system 3 comprises a sliding block 31, a roller, a driving motor, a speed reducer and a controller are arranged on the sliding block 31, the output shaft of the driving motor is connected with the power input shaft of the speed reducer, the power output shaft of the speed reducer is connected with a roller wheel shaft, the roller is arranged in the circular guide rail 4, and the control input end of the driving motor is connected with the output end of the controller.
Based on the supporting structure provided by the invention, a wind generating set is provided, the fan system 1 is arranged at the top end of the fourth tower 24, the fan system 1 adopts a downwind fan without a yaw bearing, and the plane where the wind wheel is located, the engine room and the relative position of the fourth tower 24 are fixed. During the operation of the fan, the centroid of the integral structure is positioned on one eccentric side of the circle center of the circular guide rail, and during the operation of the fan, the fan is acted by the wind, so that the walking wheel system automatically slides on the circular guide rail to wind, and the centroid of the integral structure automatically walks clockwise/anticlockwise to be adjusted to one side far away from the wind direction.
Referring to FIG. 4, in the initial state, the tower 23 is on the x-axis, the included angle between 21 and 22 and the x-axis is alpha, and alpha is more than or equal to 45 degrees and less than or equal to 75 degrees; r is more than or equal to 5m and less than or equal to 40m according to the model of the unit and the central height of the hub.
In this embodiment, α is 60 °, R is 10m, and d is 2.5 m.
The diameter of the ball 32 is larger than the height of the groove between the slider 31 and the circular guide 4, so that a gap is maintained between the slider 31 and the circular guide 4 to reduce friction. In a preferred embodiment, a casing is sealed above the circular guide rail 4, the casing is arranged along the circular guide rail 4, two ends of the casing are connected with the sliding blocks to prevent impurities from being mixed into the guide rail to increase friction force, and the casing moves synchronously with the traveling wheel system 3 when the traveling wheel system moves.
The balls 32, the slider 31 and the circular guide 4 are made of high-strength steel, the manufacturing accuracy is controlled within 0.05mm, and lubricating oil is required in the grooves and between the balls to reduce friction.
The concrete construction process is as follows:
manufacturing a tower truss structure in a factory, and transporting the tower truss structure to a site;
leveling the ground, paving a circular guide rail, and controlling the flatness within 0.3%;
placing the traveling wheel system 3, locking and fixing by using a tool; simultaneously assembling a first tower 21, a second tower 22, a third tower 23 and a fourth tower 24, wherein the truss structures are connected through bolts;
after the travelling wheels are fixed, a lower tower structure system is installed and comprises a first tower 21, a second tower 22, a third tower 23 and a travelling wheel system;
installing a fourth tower 24; the installation of the nacelle and the blades is completed within 3 days after the fourth tower 24 is installed;
completing the installation of the electric cabinet body and the cable; and finishing debugging.
Claims (5)
1. The utility model provides a no yawing system's supporting structure to wind fan passively which characterized in that: the travelling wheel type crane comprises a tower system (2), a travelling wheel system (3) and a circular guide rail (4), wherein the tower system (2) comprises a first tower (21), a second tower (22), a third tower (23) and a fourth tower (24); the bottom parts of the first tower (21), the second tower (22) and the third tower (23) are connected with the circular guide rail (4) through a walking wheel system (3), the top parts of the first tower (21), the second tower (22) and the third tower (23) are connected with each other to form the bottom tower, the fourth tower (24) is connected with the top end of the bottom tower, the radian between the bottom ends of the first tower (21) and the second tower (22) is smaller than pi, and the projection of the top ends of the first tower (21), the second tower (22) and the third tower (23) is positioned on the diameter of the circular guide rail (4); the fourth tower (24) is of a truss type or steel cylinder structure, and the first tower (21), the second tower (22) and the third tower (23) are of truss structures; the angle between the horizontal projections of the first tower (21) and the second tower (22) is 2 alpha, alpha is more than or equal to 45 degrees and less than or equal to 75 degrees, the radius of the circular guide rail (4) is R, and R is more than or equal to 5m and less than or equal to 40 m; the walking wheel system (3) comprises a sliding block (31), the sliding block (31) is slidably arranged in the circular guide rail (4), a ball (32) is arranged between the sliding block and the circular guide rail (4), and a base plate (33) is arranged at the top of the sliding block (31); a shell is sealed above the circular guide rail (4), the shell is arranged along the circular guide rail (4), and two ends of the shell are connected with the sliding block; the sliding block (31) is provided with a roller, a driving motor, a speed reducer and a controller, the output shaft of the driving motor is connected with the power input shaft of the speed reducer, the power output shaft of the speed reducer is connected with a roller wheel shaft, the roller is arranged in the circular guide rail (4), and the control input end of the driving motor is connected with the output end of the controller.
2. The support structure for a passive pair wind turbine of a non-yaw system according to claim 1, wherein: and anti-corrosion layers are arranged on the surfaces of the tower frame system (2), the walking wheel system (3) and the circular guide rail (4).
3. The support structure for a passive pair wind turbine of a non-yaw system according to claim 1, wherein: the circular guide rail (4) adopts channel steel.
4. A wind power plant using a support structure according to any of claims 1 to 3, characterized in that the fan system (1) is arranged at the top of the fourth tower (24), the fan system (1) is a downwind fan without yaw bearing, and the plane of the wind wheel, the nacelle and the fourth tower (24) are fixed in relative position.
5. An installation method applied to the wind generating set according to claim 4, wherein the tower system (2), the road wheel system (3) and the circular guide rail (4) are prefabricated in a factory, and the method comprises the following steps:
laying a circular guide rail (4) on the basis;
a walking wheel system (3) is installed and locked;
assembling a first tower (21), a second tower (22), a third tower (23) and a fourth tower (24);
a mounting tower system comprising a first tower (21), a second tower (22) and a third tower (23);
installing a fourth tower (24);
the installation of the engine room and the blades is finished within 3 days after the fourth tower (24) is installed;
and debugging after the installation of the electric cabinet body and the cable is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282723.5A CN112901422B (en) | 2021-03-16 | 2021-03-16 | Passive wind-aligning fan supporting structure without yaw system and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282723.5A CN112901422B (en) | 2021-03-16 | 2021-03-16 | Passive wind-aligning fan supporting structure without yaw system and wind generating set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112901422A CN112901422A (en) | 2021-06-04 |
| CN112901422B true CN112901422B (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110282723.5A Active CN112901422B (en) | 2021-03-16 | 2021-03-16 | Passive wind-aligning fan supporting structure without yaw system and wind generating set |
Country Status (1)
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| CN (1) | CN112901422B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8545187B2 (en) * | 2008-09-08 | 2013-10-01 | Flodesign Wind Turbine Corp. | Systems and methods for protecting a wind turbine in high wind conditions |
| CN207795461U (en) * | 2017-12-29 | 2018-08-31 | 舞钢国能中泰重工有限公司 | A kind of wind power generation tower |
| CN111441916A (en) * | 2020-05-13 | 2020-07-24 | 北京三力新能科技有限公司 | Horizontal shaft offshore wind generating set tower |
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- 2021-03-16 CN CN202110282723.5A patent/CN112901422B/en active Active
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| CN112901422A (en) | 2021-06-04 |
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