CN212563534U - Single-pendulum type vibration damping device used inside large wind turbine tower - Google Patents

Single-pendulum type vibration damping device used inside large wind turbine tower Download PDF

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Publication number
CN212563534U
CN212563534U CN202021497195.2U CN202021497195U CN212563534U CN 212563534 U CN212563534 U CN 212563534U CN 202021497195 U CN202021497195 U CN 202021497195U CN 212563534 U CN212563534 U CN 212563534U
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China
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support
plate
wind turbine
viscous
wire rope
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CN202021497195.2U
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Chinese (zh)
Inventor
丁振宇
宋家辉
高增梁
刘和坤
郭礼建
柴洪亮
管陈峰
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/728Onshore wind turbines

Abstract

The utility model discloses a simple pendulum formula shock absorber device that is used for large-scale wind turbine generator pylon inside, the device includes the top support, the quality piece, the viscous damper. The top supports are four in number and are uniformly distributed in the cylinder body to fix and suspend the mass blocks; the mass block is provided with a bearing ring; a groove is formed in the lower hemisphere of the mass block, so that the steel wire rope can conveniently bypass the suspension; the four viscous dampers are uniformly distributed below each support, and the axes of the four viscous dampers and the horizontal axis of the bearing ring are on the same horizontal line, so that the four viscous dampers can play roles in dissipating energy and limiting the mass block to generate large displacement. When the tower-shaped cylinder body shakes due to external excitation, the device can always swing in the opposite direction to the structure no matter which direction the tower-shaped cylinder body shakes due to the design of the single pendulum TMD, and a reaction force is generated on the main structure, so that the vibration of the structure is controlled, and the purposes of energy consumption and vibration reduction are achieved through the viscous damper.

Description

Single-pendulum type vibration damping device used inside large wind turbine tower
Technical Field
The utility model relates to a damping control field, concretely relates to be used for inside simple pendulum formula vibration damper of large-scale wind turbine pylon.
Background
Nowadays, the global economy is rapidly developed, the science and technology are continuously improved, but at the same time, the problems of supply shortage and environmental destruction caused by the increasing shortage of energy sources are also accompanied, so that the attention of all countries to renewable and pollution-free energy sources is beginning to be paid. Among various green energy sources, wind energy is one of the renewable energy sources with great prospect potential. However, industrial manufacturing technology is developed in China, and wind energy resources are abundant, so more and more ultrahigh wind driven generators are built. However, the tower-shaped cylinder body of the wind driven generator has the characteristic of high flexibility due to the structural characteristics of the tower-shaped cylinder body, and is sensitive to wind load, analysis shows that in the actual wind load bearing process, transverse wind vibration, namely wind-induced vibration is often much larger than wind vibration, so that the upright column vibrates frequently, fatigue cracks are easily generated on the upright column and the support part due to long-time fatigue load bearing, hidden dangers are brought to the structural integrity of the upright column, and the problem of how to solve the vibration of the upright column is always paid much attention to
From the perspective of traditional structural design methods, vibration control has gradually evolved from a method that relies solely on changing the structure's own properties to resist environmental loads, to a method that relies solely on changing the structure's own properties to resist seismic and wind. The vibration control system actively controls the dynamic response of the structure. The vibration control method commonly used at present mainly comprises methods of vibration elimination, vibration isolation, dynamic vibration absorption, damping vibration attenuation and the like.
The single pendulum Tuned Mass Damper (TMD) mainly comprises a pendulum rope, a mass block and a damper. The working principle is that the pendulum length of the simple pendulum is adjusted to enable the natural vibration frequency of the simple pendulum to be close to the controlled frequency of the main structure, when external force acts on the main structure, the simple pendulum generates movement opposite to the main structure, and reaction force is exerted on the main structure, so that the vibration of the structure is controlled. Most of the single pendulum type dampers are applied to high-rise buildings, the bearing capacity of the top of the wind turbine is not good, the higher the wind turbine generator is, the larger the mass of the corresponding mass block is, and therefore the requirement on the bearing capacity is necessarily put forward.
In order to overcome the defects, the utility model provides a simple pendulum type vibration damper for large-scale wind turbine pylon is inside. The utility model discloses based on resonance effect to combine traditional simple pendulum formula TMD design principle, through designing the top support, can effectually install inside the barrel, make it can be at the level to arbitrary direction swing, realize multi freedom's vibration control.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple pendulum formula TMD vibration damper that is used for large-scale wind turbine generator supporting tower body inside mainly to high-rise structure vibration control, aims at reducing its vibration reaction under wind vibration and earthquake load effect to reach the effect of damping power consumption. The utility model discloses an adjust and put the resonance frequency that long controlled TMD vibration damper to cater to the natural frequency of tower equipment structure, and then the vibration effect of effectual control structure. The device produces the reaction force on the main structure through producing the swing opposite with the structure all the time to the vibration of control structure, the energy that acts on the main structure dissipates through the attenuator of simple pendulum formula TMD, thereby the control structure is to the vibration reaction of exogenic action.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a single pendulum TMD vibration damper used in a large wind turbine tower comprises a top support, a mass block, a steel wire rope and a viscous damper which are uniformly distributed in a tower body, wherein the top support comprises a support base plate, a support rib plate, a support baffle plate, a rib plate, a top plate above the support base plate and a baffle plate at the front end; the support base plate is connected with the tower body and the support rib plate through welding, the support baffle plate is connected with the support rib plate through bolts, the rib plate is connected with the support baffle plate through welding, the steel wire rope is suspended through the bolts for connecting the two rib plates, the mass block is provided with the bearing ring, the steel wire rope penetrates through the bearing ring, a groove is formed in the lower hemisphere of the mass block, the steel wire rope bypasses the groove, the viscous damper base plate at one end of the viscous damper is connected with the tower body through welding, and the other end of the viscous damper base plate is fixed on the bearing ring.
Furthermore, the support base plate and the viscous damper base plate are made of the same material as the tower body.
Furthermore, the heights of the support base plate and the viscous damper base plate are higher than the heights of the support rib plate and the damper base connected with the support base plate and the viscous damper base plate.
Furthermore, the welding structure adopts a full penetration welding structure, the inner angle and the outer angle are smooth, MT detection is carried out on a welding line before other parts are welded, and the grade I is qualified.
Furthermore, the number of the bolt holes formed in the support baffle plate connected with the support rib plate is determined according to the size of the support baffle plate.
Furthermore, gaps at two sides of the bolt hole suspension steel wire rope of the rib plate are filled with elastic washers.
Furthermore, the four top supports are uniformly distributed around the inside of the tower body; the four viscous dampers are uniformly distributed below each support, and the axes of the four viscous dampers and the horizontal axis of the bearing ring are on the same horizontal line.
The device is fixedly suspended in the top of a high-rise structure, under the action of earthquake or wind load, the controlled structure vibrates to drive the mass block to move opposite to the main structure, and reaction force is applied to the main structure, so that the vibration of the structure is controlled, and energy acting on the main structure is dissipated through the damper of the single pendulum TMD, so that the vibration of the structure on the action of external force is controlled. In addition, since the single pendulum TMD can swing in any direction horizontally, vibration control with multiple degrees of freedom can be realized. On the other hand, the resonance frequency of the single pendulum type TMD shock absorber can be effectively controlled by adjusting the pendulum length, and when the frequency of the single pendulum type TMD shock absorber is consistent with the natural frequency of the tower body, the best shock absorption effect is achieved.
The utility model has the advantages as follows:
the utility model discloses can adjust damping device's resonant frequency through adjusting pendulum length, reach the best effect when being close the natural frequency of pylon promptly. And the vibration damper has the advantages of simple structure, convenient design and larger frequency regulation range.
Drawings
Fig. 1 is a schematic structural diagram of a single pendulum type vibration damping device used inside a large wind turbine tower according to the present invention;
FIG. 2 is a top view of the entire apparatus;
fig. 3 is a side view of the top bracket part.
In the figure: the tower comprises a tower body 1, a mass block 2, a support rib plate 3, a support base plate 4, a support baffle 5, a support baffle 6, a rib plate 7, a top plate 8, a baffle plate 9, a steel wire rope 10, a viscous damper base plate 11, a viscous damper 12 and a bearing ring.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings and technical solutions.
As shown in fig. 1, the single pendulum TMD damper for the inside of a large wind turbine tower of the present invention is installed around the top of the inside of the tower, and includes a top bracket uniformly distributed at the circumference of an internal tower body 1, wherein the top bracket includes a bracket backing plate 4 welded to the tower body, a support rib plate 3, a support baffle plate 5, a rib plate 6, and a top plate 7 and a baffle plate 8 above and in front of the rib plate 6; the top support is provided with two rib plates 6, and the middle of the two rib plates 6 is connected through a bolt to suspend a steel wire rope 9.
The support baffle 5 is connected with the support rib plate 3 through bolts, the rib plates 6 are connected with the support baffle 5 through welding, and the steel wire rope 9 for suspension is suspended between the two rib plates 6 through bolts and used for suspending the mass block 2.
The mass block 2 is provided with the bearing ring 12, so that the steel wire rope 9 can suspend the mass block 2 more conveniently and effectively through the bearing ring 12, a viscous damper 11 is provided with a supporting point, and a groove is formed in the lower hemisphere of the mass block 2, so that the steel wire rope 9 can bypass suspension conveniently. One end of the viscous damper 11 is connected with a viscous damper backing plate 10 welded on the tower body, and the other end is supported on a bearing ring 12.
As shown in fig. 2 and 3, a top plate 7 is arranged on the rib plate 6; the front end is provided with a baffle 8 for resisting the state of rust caused by dust or leaked water. The number of bolt holes on the support baffle 5 can be set according to actual size by oneself.
The height of the bracket backing plate 4 is higher than that of the rib plate 3, and the height of the support baffle plate 5 is higher than that of the rib plate 6, so that a margin is left for welding.
The viscous dampers 11 are 4 in number and are uniformly distributed below each bracket, and the axes of the viscous dampers and the horizontal axis of the bearing ring are on the same horizontal line, so that the viscous dampers can generate large displacement for limiting the mass block on one hand, and the viscous dampers can dissipate energy generated by a main structure on the other hand.
The device is fixedly suspended in the top of the high-rise structure, the controlled structure vibrates under the action of earthquake or wind load to drive the mass block to move opposite to the main structure, and reaction force is applied to the main structure, so that the vibration of the structure is controlled, energy acting on the main structure is dissipated through the damper of the single pendulum TMD, and the vibration of the structure under the action of external force is controlled to achieve the effect of vibration reduction.
In this embodiment, the length of the wire rope 9, i.e., the pendulum length, and the installation position of the single pendulum TMD damping control device should be determined according to the specific situation of the structure, so as to achieve the best damping effect.
The utility model discloses an install the design at the inside simple pendulum formula TMD of pylon, successfully use inside the pylon of the wind power generation price of superelevation type with simple pendulum formula TMD. Traditional simple pendulum formula TMD is used mostly in high-rise building, need suspend the existence of platform in midair, and the utility model discloses a design top support for this damping device does not need the fixed platform of top can install in the inside of tower form barrel, and does not weaken the damping effect of this TMD device. The damping device can achieve the due damping effect no matter the vibration of the tower equipment in any direction is caused by external excitation.
The above embodiments of the present invention are not right the utility model discloses a limit of scope, the utility model discloses an embodiment is not limited to this, and all this kind of basis according to the utility model discloses an above-mentioned content, install the ordinary technical knowledge and the conventional means in this field, is not deviating from the utility model discloses under the above-mentioned basic technical thought prerequisite, right the utility model discloses modification, replacement or the change of other multiple forms that above-mentioned structure was made all should fall within the scope of protection of the utility model.

Claims (5)

1. The utility model provides a simple pendulum formula vibration damper for large-scale wind turbine tower is inside, includes that the equipartition is at inside top support, quality piece (2) of tower body (1), wire rope (9), viscous damper (11), its characterized in that: the top support comprises a support base plate (4), a support rib plate (3), a support baffle plate (5), a rib plate (6), a top plate (7) above and a baffle plate (8) at the front end; support backing plate (4) are through welded connection tower body (1) and support gusset (3), support baffle (5) are connected with support gusset (3) through the bolt, and gusset (6) link together through welding and support baffle (5), and wire rope (9) are suspended in midair through the bolt of connecting two gusset (6), quality piece (2) are furnished with bearing ring (12), and wire rope (9) pass bearing ring (12) to be equipped with the recess on the lower hemisphere of quality piece (2), this recess is walked around in wire rope (9), viscous damper backing plate (10) of viscous damper (11) one end are connected with tower body (1) through the welding, and the other end is fixed in on bearing ring (12).
2. The mono-pendulum vibration damping device for the interior of large wind turbine towers according to claim 1, wherein: the heights of the support base plate and the viscous damper base plate are higher than those of the support rib plate and the damper base connected with the support base plate and the viscous damper base plate.
3. The mono-pendulum vibration damping device for the interior of large wind turbine towers according to claim 1, wherein: the number of the bolt holes formed in the support baffle (5) connected with the support rib plate (3) is determined according to the size of the support baffle.
4. The mono-pendulum vibration damping device for the interior of large wind turbine towers according to claim 1, wherein: gaps at two sides of the bolt hole suspension steel wire rope of the rib plate (6) are filled with elastic washers.
5. The mono-pendulum vibration damping device for the interior of large wind turbine towers according to claim 1, wherein: the four top supports are uniformly distributed around the interior of the tower body; the four viscous dampers are uniformly distributed below each support, and the axes of the four viscous dampers and the horizontal axis of the bearing ring are on the same horizontal line.
CN202021497195.2U 2020-07-27 2020-07-27 Single-pendulum type vibration damping device used inside large wind turbine tower Active CN212563534U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021497195.2U CN212563534U (en) 2020-07-27 2020-07-27 Single-pendulum type vibration damping device used inside large wind turbine tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021497195.2U CN212563534U (en) 2020-07-27 2020-07-27 Single-pendulum type vibration damping device used inside large wind turbine tower

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113513099B (en) * 2021-04-29 2022-11-29 合肥工业大学 Tuned mass damper for tower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113513099B (en) * 2021-04-29 2022-11-29 合肥工业大学 Tuned mass damper for tower

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