CN210440159U - High-vibration damping wind turbine tower - Google Patents
High-vibration damping wind turbine tower Download PDFInfo
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- CN210440159U CN210440159U CN201921090323.9U CN201921090323U CN210440159U CN 210440159 U CN210440159 U CN 210440159U CN 201921090323 U CN201921090323 U CN 201921090323U CN 210440159 U CN210440159 U CN 210440159U
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- damper
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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
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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
- Y02E10/728—Onshore wind turbines
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Abstract
The utility model discloses a high-vibration damping wind turbine tower, which comprises a plurality of interconnected tower shell sections, wherein a belleville spring is embedded between tower tube connecting flanges of adjacent tower shell sections, and a flange bolt passes through the belleville spring to interconnect the tower tube connecting flanges of the adjacent tower shell sections; the inner wall surface of the cylinder body of the tower frame cylinder section is hinged with a damper through a damper support rod, at least four dampers are uniformly arranged on each tower frame cylinder section along the circumferential direction of the cylinder body, and the dampers are parallel to the inner wall surface of the cylinder body of the tower frame cylinder section. The tower can effectively increase the vibration damping of the tower and reduce the vibration of the tower, and is particularly suitable for large-scale wind power flexible towers.
Description
Technical Field
The utility model relates to a wind power generation technical field especially relates to a can effectively increase pylon vibration damping, reduce the flexible pylon structure of large-scale wind turbine generator system of pylon vibration.
Background
The wind energy is a clean and pollution-free renewable energy source, the wind power generation has no fuel problem, and radiation or air pollution can not be generated, so that the wind energy is a particularly good power generation method by using the wind energy; therefore, wind power generation technology is rapidly developed in recent years.
In order to realize large blades and high power of wind power generation, the height and the volume of a wind turbine tower are continuously increased. However, due to high flexibility of the tower, vibration and deformation of a tower structure become larger along with increase of the height of the tower during operation, and the tower vibration becomes more and more serious due to increase of wind speed, long-term vibration can generate a plurality of adverse effects on operation of a wind generating set, such as reduction of matching precision and increase of abrasion of transmission parts, and more serious is that under the inducement of long-term vibration, cracks are easily generated at the position of a welding joint of the tower due to stress concentration, and fastening bolts between structural components such as a cylinder flange and the like can also loosen under the action of repeated vibration; moreover, the vibration can seriously affect the stability and reliability of the operation of the generator set, and even cause the collapse of the generator set and the tower.
In order to avoid destructive vibration of the tower of the wind generating set, the most effective means is to increase the vibration damping of the tower, so that the vibration of the tower and the set is quickly attenuated, and the vibration amplitude of the system is reduced besides optimizing the structural parameters such as the diameter of the tower, the weight of the tower and the thickness of the cylinder wall. The invention discloses a wind power tower frame with a tuned mass damper, and the wind power tower frame is disclosed in patent application No. 201711096645. X. Obviously, in the tuned mass damper formed by suspending the mass body, the effect is better when the mass body is heavier, but the weight of the mass body is increased, so that the load of the tower is inevitably increased greatly, huge load is formed on the tower, the stability, reliability and service life of the tower and a unit are reduced, the self weight of the tower is enhanced, and serious problems are brought to the manufacturing, transportation, installation and cost of the tower.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem that prior art exists, the utility model aims to solve the technical problem that a high vibration damping wind turbine generator system pylon that can effectively increase pylon vibration damping, reduce the pylon vibration is provided.
In order to solve the technical problem, the utility model discloses a high vibration damping wind turbine tower, including a plurality of interconnected tower shell rings, inlay between the tower section flange of adjacent tower shell ring and be equipped with disc spring, flange bolt passes disc spring and links each other the tower section flange of adjacent tower shell ring, a plurality of flange bolts have been evenly distributed along same circumference on the quotation of tower section flange, and each flange bolt corresponds a disc spring, and this disc spring inlays and is adorned in the pit that corresponds on the tower section flange; the inner wall surface of the cylinder body of the tower frame cylinder section is hinged with a damper through a damper support rod, at least four dampers are uniformly arranged on each tower frame cylinder section along the circumferential direction of the cylinder body, and the dampers are parallel to the inner wall surface of the cylinder body of the tower frame cylinder section.
In the structure, because the belleville springs are embedded between the connecting flanges of the two adjacent tower shell rings, the flange bolt penetrates through each belleville spring to connect the tower shell connecting flanges of the two adjacent tower shell rings with each other, and the structure ensures that the tower shell connecting flanges of the two adjacent tower shell rings are uniformly distributed with the plurality of belleville springs. When the tower is subjected to bending oscillation in a certain direction by an external acting force to generate swing, the tower cylinder wall on the tension side is subjected to the pretensioning force of the flange bolts to prevent the flanges of the two tower cylinder sections from being separated to generate reverse swing damping, and the tower cylinder connecting flange on the compression side tower cylinder wall is subjected to the action of reverse spring force from the belleville spring to generate reverse damping force to prevent and delay the swing oscillation of the tower cylinder, so that the vibration and the amplitude of the tower are effectively reduced. Therefore, under the condition that the overall mass of the tower barrel is not increased, vibration damping is effectively generated through the elastic damping effect of the belleville springs, the load of the tower barrel is favorably reduced, the lightweight design of the tower barrel is conveniently realized, the weight of the whole tower barrel is reduced, and the cost of the tower barrel is saved. And each flange bolt corresponds to one belleville spring, and the belleville springs are uniformly distributed on the periphery of the tower cylinder connecting flange, so that the tower system damping of the tower in all directions such as the left-right direction or the front-back direction of a tower shell ring is improved, the tower cylinder vibration is reduced in the whole periphery of the tower section, the system reliability of the wind power generation equipment is improved, and the service life of the wind power generation equipment is prolonged. And because the damper is hinged on the inner wall surface of the cylinder body of the tower frame cylinder section through the damper support rod, when the tower cylinder section is bent and oscillated in a certain direction under the action of external force to generate oscillation, the damper positioned on the compression side or the tension side of the tower cylinder body can generate damping force opposite to deformation displacement, and the reverse damping force generated by the damper prevents or delays the deformation and oscillation of the tower cylinder in the certain direction, so that the vibration and the amplitude of the tower cylinder are effectively reduced. And moreover, the damper on the inner wall surface of the tower frame shell ring is combined with the belleville spring embedded between the tower tube connecting flanges, so that a dual vibration damping effect is generated, optimal vibration damping can be provided in real time in the dynamic vibration process of the wind turbine generator and the tower frame, the vibration of the tower frame and the generator set is quickly attenuated, and the vibration amplitude of a system is reduced.
In the preferred embodiment of the present invention, 4-10 dampers are uniformly arranged on the tower shell ring along the circumferential direction of the shell. Effective vibration damping can be produced in all directions.
The utility model discloses a further embodiment, the attenuator props up the hinge through the attenuator vaulting pole at both ends and supports on the inner tube wall of pylon shell ring. Not only simple structure is reasonable, has lengthened the distance of hank fulcrum moreover, is favorable to strengthening the vibration damping.
The utility model discloses a preferred embodiment, the attenuator is hydraulic damper or spring damper. The damping effect is convenient to implement and stable.
The utility model discloses a preferred embodiment, the welding has the top of the tower flange on the top of the pylon shell ring that is located the upper end, is provided with a plurality of top of the tower flange screws on the top of the tower flange. And a tower barrel door is arranged on the tower barrel section at the bottom end. The installation of the generator set is convenient; is convenient for maintenance.
The utility model discloses a preferred embodiment, the tower section of thick bamboo flange of tower shell ring is L type flange dish. The tower shell ring is of a round table type tubular structure, and the tower shell rings connected with each other are located on the same round table surface. The connecting strength is high, and the integral rigidity is good.
Drawings
The following describes the damping wind tower with a modified structure according to the present invention with reference to the accompanying drawings and embodiments.
FIG. 1 is a schematic view of the overall structure of a tower of a quenched and tempered damping wind tower according to the present invention;
FIG. 2 is a schematic cross-sectional view of the tower shell coupling of the embodiment of FIG. 1;
fig. 3 is an enlarged schematic view of portion i of the structure shown in fig. 1.
In the figure, 1-tower shell ring, 2-tower top flange, 3-tower shell door, 4-tower top flange hole, 5-damper, 6-damper support rod, 7-hinged support, 8-flange bolt, 9-belleville spring, and 10-tower shell connecting flange.
Detailed Description
As shown in fig. 1, the high vibration damping wind turbine tower comprises four tower shell sections 1 connected in sequence, wherein the tower shell sections 1 are respectively a tower shell section at the uppermost end of the tower, two tower shell sections at the middle part of the tower and a tower shell section at the bottommost part of the tower. The tower barrel connecting flanges 10 for connecting the adjacent tower barrel sections 1 are all common L-shaped flange plates. A tower barrel door 3 is arranged on the tower barrel section 1 at the bottommost part, and the tower barrel door 3 is convenient for workers to enter or climb the inside of a tower barrel.
The tower frame sections 1 are in a circular truncated cone-shaped cylindrical structure and are connected in sequence, the conicity of the cylinder wall of each tower frame section 1 is the same, and the cylinder end calibers at the upper end and the lower end of each tower frame section 1 are matched and connected with each other, so that an integral frustum cylindrical structure is formed, namely the tower frame sections 1 which are connected with each other are positioned on the same circular table surface.
As shown in fig. 2, two adjacent tower shell sections 1 are connected with each other through a tower connecting flange 10 corresponding to each other, a plurality of flange bolts 8 are uniformly distributed along the same circumference on the disc surface of the tower connecting flange 10, each flange bolt 8 corresponds to a belleville spring 9, four dampers 5 are arranged in parallel on each tower shell section 1 along the inner wall surface bus direction, the dampers 5 adopt hydraulic dampers, and the four dampers are uniformly arranged along the inner wall surface circumference of the tower shell section 1. Each damper 5 is connected with a damper support rod 6 at each end, the other end of the damper support rod 6 is hinged to a hinged support 7 at the corresponding end, and the hinged support 7 is welded on the inner wall surface of the tower shell ring 1.
The top of a tower shell ring 1 at the upper end of the tower is welded with a tower top flange 2, the tower top flange 2 is in a flange disc-shaped structure, a plurality of tower top flange bolt holes 4 are formed in the tower top flange 2, and the tower top flange bolt holes 4 are located on the same circumference. The tower top flange 2 is used for supporting and mounting the wind generating set.
As shown in fig. 3, the tower tube connecting flanges 10 welded to the two ends of the tower tube section 1 are both L-shaped flange structures, and the tower tube sections 1 of two adjacent sections are connected to each other through the tower tube connecting flanges 10. A plurality of bolt holes are uniformly distributed on the same circumference of the disk surface of the tower tube connecting flange 10, and pits are arranged on the joint surfaces of the bolt holes, so that a step bolt hole is formed. When the tower barrel section connecting device is connected and installed, the belleville springs 9 are embedded in pits of the corresponding step bolt holes, each flange bolt 8 or each step bolt hole corresponds to one belleville spring 9, and the flange bolts 8 penetrate through central holes of the corresponding tower barrel connecting flange 10 and the belleville springs 9 to connect the two adjacent tower barrel sections 1 together.
The above description illustrates some preferred embodiments of the present invention, but the present invention is not limited to the present embodiment. The utility model has many improvements and changes, for example, the number of the tower shell ring is not limited to 4, the number of the shell ring is designed and determined according to the height of the tower, and preferably, 4-10 dampers are evenly arranged on the shell ring along the circumferential direction of the shell; the number of the dampers uniformly arranged along the circumferential direction of the inner wall surface of the tower shell ring 1 is not limited to four, and is determined according to the actual specific structure; the damper is not limited to a hydraulic damper, and may be a common damper such as a spring damper. These variations and modifications are all within the scope of the present invention.
Claims (8)
1. The utility model provides a high vibration damping wind turbine tower, includes a plurality of interconnect's tower shell ring (1), its characterized in that: the tower drum connecting flange structure is characterized in that belleville springs (9) are embedded between tower drum connecting flanges (10) of adjacent tower drum sections (1), flange bolts (8) penetrate through the belleville springs (9) to connect the tower drum connecting flanges (10) of the adjacent tower drum sections (1) with each other, a plurality of flange bolts (8) are uniformly distributed on the disc surface of the tower drum connecting flange (10) along the same circumference, each flange bolt (8) corresponds to one belleville spring (9), and the belleville springs (9) are embedded in corresponding pits on the tower drum connecting flange (10); the inner wall surface of the cylinder body of the tower frame cylinder section (1) is hinged with dampers (5) through damper support rods (6), at least four dampers (5) are uniformly arranged on each tower frame cylinder section (1) along the circumferential direction of the cylinder body, and the dampers (5) are parallel to the inner wall surface of the cylinder body of the tower frame cylinder section (1).
2. The high vibration damping wind turbine tower according to claim 1, wherein: 4-10 dampers (5) are uniformly arranged on the tower frame shell ring (1) along the circumferential direction of the cylinder.
3. The high vibration damping wind turbine tower according to claim 1, wherein: the damper (5) is hinged on the inner cylinder wall of the tower frame cylinder section (1) through damper support rods (6) at two ends.
4. A high vibration damping wind turbine tower according to claim 1, 2 or 3 in which: the damper (5) is a hydraulic damper or a spring damper.
5. The high vibration damping wind turbine tower according to claim 1, wherein: a tower barrel door (3) is arranged on the tower barrel section (1) at the bottom end.
6. The high vibration damping wind turbine tower according to claim 1, wherein: the top end of the tower frame shell ring (1) at the upper end is welded with a tower top flange (2), and the tower top flange (2) is provided with a plurality of tower top flange screw holes (4).
7. The high vibration damping wind turbine tower according to claim 1, wherein: a tower cylinder connecting flange (10) of the tower cylinder section (1) is an L-shaped flange plate.
8. The high vibration damping wind turbine tower according to claim 1, wherein: the tower frame shell ring sections (1) are all of circular truncated cone-shaped tubular structures, and the tower frame shell ring sections (4) which are connected with each other are located on the same circular truncated cone surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921090323.9U CN210440159U (en) | 2019-07-12 | 2019-07-12 | High-vibration damping wind turbine tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921090323.9U CN210440159U (en) | 2019-07-12 | 2019-07-12 | High-vibration damping wind turbine tower |
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| Publication Number | Publication Date |
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| CN210440159U true CN210440159U (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921090323.9U Active CN210440159U (en) | 2019-07-12 | 2019-07-12 | High-vibration damping wind turbine tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242508A (en) * | 2019-07-12 | 2019-09-17 | 上海泰胜(东台)电力工程机械有限公司 | High vibration damps tower frame for wind generating set |
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2019
- 2019-07-12 CN CN201921090323.9U patent/CN210440159U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242508A (en) * | 2019-07-12 | 2019-09-17 | 上海泰胜(东台)电力工程机械有限公司 | High vibration damps tower frame for wind generating set |
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