CN111779152A - TMD vibration damper for ultrahigh wind turbine stand column - Google Patents
TMD vibration damper for ultrahigh wind turbine stand column Download PDFInfo
- Publication number
- CN111779152A CN111779152A CN202010728550.0A CN202010728550A CN111779152A CN 111779152 A CN111779152 A CN 111779152A CN 202010728550 A CN202010728550 A CN 202010728550A CN 111779152 A CN111779152 A CN 111779152A
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- support
- plate
- base plate
- wire rope
- steel wire
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention discloses a TMD vibration damper for an ultrahigh wind turbine stand column, which comprises a top support, a mass ring, a steel wire rope vibration damper, a tool support and the like. The top supports are four groups, two in each group, are uniformly distributed around the outer part of the upright column and are used for fixing the suspended mass block; the lifting lugs are welded above the mass ring, so that the steel wire rope can suspend the mass block more conveniently and safely; the four viscous dampers are uniformly distributed above each steel wire rope shock absorber and share one base plate with the spring support, and the base plate can play a role in dissipating energy. When the tower-shaped upright post shakes due to external excitation, the design of the annular mass ring TMD is relied on, no matter which direction the shaking occurs, the mass ring can generate the movement which is always opposite to the structure, and the 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
Technical Field
The invention relates to the field of vibration reduction control, in particular to a TMD vibration reduction device for an ultrahigh wind turbine upright post.
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 upright post of the wind driven generator has the characteristic of high flexibility due to the structural characteristics of the tower-shaped upright post, 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 post vibrates frequently, fatigue cracks are easily generated on the upright post and a support part due to long-time fatigue load bearing, hidden dangers are brought to the structural integrity of the upright post, and the problem of how to solve the vibration of the upright post 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 Tuned Mass Damper (TMD) of the annular mass block mainly comprises a top support, a mass ring, a damper and a steel wire rope shock absorber. The working principle is that when external force acts on the main structure, the mass ring generates movement opposite to that of the main structure, reaction force is applied to the main structure, and then energy is dissipated through the steel wire rope shock absorber and the viscous damper, so that vibration of the structure is controlled. Most dampers are square in mass, are mostly used for high-rise buildings, are not used for the tower-shaped cylinder type buildings, and have poor damping effect in each direction.
In order to overcome the defects, the invention provides a TMD vibration damping device for an ultrahigh wind turbine upright post. The invention is based on resonance effect, combines traditional TMD design principle, designs the top support and the mass block into a circular ring shape, and can be effectively arranged outside the upright post, so that the upright post can swing in any direction horizontally, and the vibration control with multiple degrees of freedom is realized.
Disclosure of Invention
The invention aims to provide a TMD vibration damper for an ultrahigh wind turbine upright post, which is mainly used for controlling vibration of a towering structure and aims to reduce vibration reaction of the towering structure under the action of wind vibration and earthquake load so as to achieve the effects of vibration damping and energy consumption. The invention adjusts the resonance frequency of the TMD damping device by designing the mass of the mass ring in advance, thereby catering to the natural frequency of the upright post structure and further effectively controlling the vibration effect of the 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 wire rope shock absorber and viscous damper, thereby the control structure is to the vibration reaction of exogenic action.
In order to achieve the purpose, the invention adopts the following technical scheme:
a TMD vibration damper for an ultrahigh wind turbine upright column comprises a top support, a mass ring and a viscous damper which are uniformly distributed around the outer part of the upright column, wherein the support comprises a top support base plate, a support rib plate, a support baffle plate at the front end, a support rib plate and a support top plate above the support base plate; a support rib plate is welded below the support rib plate, the other end of the support rib plate is welded on the top support base plate, and a hole is formed in the front end of the support rib plate so as to facilitate the bolt to pass through for hanging a steel wire rope; the mass ring is formed by combining 4 quarter circular rings through a mass block connecting plate, and is suspended by a top support through 4 lifting lugs uniformly distributed on the top by using a steel wire rope; the tool support comprises four groups of support plates and connecting plates, the tool support is respectively connected with the stand column and the mass ring and staggered with the position of the steel wire rope shock absorber, the two support plates are connected through the connecting plates, one support plate is welded on the mass ring, the other support plate is welded on a tool support backing plate, and the tool support backing plate is connected with the stand column through welding; one end of the viscous damper is welded on the spring support base plate, and the other end of the viscous damper is connected to the mass ring and is installed right above each steel wire rope shock absorber, and the direction of the viscous damper is the same as the installation direction of the steel wire rope shock absorber.
Further, the top support base plate, the tool support base plate and the spring support base plate are made of the same material as the stand column.
Further, the height of the top support base plate and the height of the spring support base plate are higher than the distance from the support rib plate to the support rib plate, the height of the spring support base plate is higher than the height of the spring support and the distance from the spring support to the viscous damper, and the height of the tool support base plate is higher than the height of the support rib 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.
Further, the number of the tool supports and the number of the spring supports are 4, the installation direction of the tool supports is staggered with the direction of the spring supports, the specific direction is adjustable, and the tool supports can be detached after the installation is completed.
Furthermore, gaps at two sides of the bolt hole suspension steel wire rope of the support rib plate are filled with elastic washers.
The device is fixedly suspended at the top of a high-rise structure, under the action of earthquake or wind load, the controlled structure vibrates to drive the mass ring 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 the energy acting on the main structure is dissipated through the steel wire rope shock absorber and the viscous damper, so that the vibration of the structure under the action of external force is controlled. In addition, since the circular ring TMD can swing in any direction in the horizontal direction, vibration control with multiple degrees of freedom can be realized. On the other hand, the mass of the mass ring is designed in advance, the resonance frequency of the TMD damper can be effectively controlled, and when the frequency of the TMD damper is consistent with the natural frequency of the upright column, the optimal damping effect is achieved.
The invention has the following beneficial effects:
the invention can adjust the resonance frequency of the vibration damper by designing the mass of the mass ring, and the best effect can be achieved when the natural frequency of the tower is approached. 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 TMD damping device for an ultra-high wind turbine column according to the present invention;
FIG. 2 is a top plan view of the top bracket portion;
FIG. 3 is a top view of the mass ring portion;
fig. 4 is a side view of the top bracket part.
In the figure: 1-upright column, 2-top support base plate, 3-support rib plate, 4-support rib plate, 5-support top plate, 6-support baffle plate, 7-tooling support base plate, 8-support plate, 9-connecting plate, 10-mass block connecting plate, 11-steel wire rope shock absorber and 12-spring support; 13-spring support backing plate; 14-viscous damper; 15-mass ring; 16-a lifting lug; 17-spring support baffle; and 18-steel wire rope.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings.
As shown in fig. 1, the TMD damping device for an ultra-high wind turbine upright of the present invention is installed around the top outside a tower, and comprises top brackets uniformly distributed around the top circumference of an upright 1, wherein each top bracket comprises a top bracket backing plate 2, a support rib plate 3, a bracket baffle plate 6 at the front end, a support rib plate 4, and a bracket top plate 5 above; and the supporting rib plate 4 is welded below the support rib plate 3, and the other end of the supporting rib plate 4 is welded on the top support base plate 2. As shown in fig. 2 and 4, the support rib plates 3 are divided into 4 groups, each group has two rib plates, the front end of each group is provided with a hole, and a steel wire rope 18 can be conveniently hung by passing through a bolt.
As shown in fig. 3, the mass ring 15 is formed by combining 4 quarter rings through the mass connecting plate 10, and the mass ring 15 is suspended by the top bracket through 4 lifting lugs 16 uniformly distributed on the top by using a wire rope 18.
The tool support comprises four groups of supporting plates 8 and connecting plates 9, the connecting upright columns are connected with the quality rings and staggered with the steel wire rope shock absorber 11, the two supporting plates 8 are connected through the connecting plates 9, one supporting plate 8 is welded on the quality ring 15, the other supporting plate 8 is welded on a tool support base plate 7, and the tool support base plate 7 is connected with the upright columns 1 through welding.
One end of the viscous damper 14 is welded on the spring support base plate 13, and the other end is connected to the mass ring 15, and the viscous damper is installed right above each steel wire rope shock absorber 11 and has the same direction as the installation direction of the steel wire rope shock absorber.
As shown in fig. 1 and 2, a support top plate 5 is arranged at the top end of a support rib plate 3, a support baffle plate 6 is arranged at the front end, the support top plate and the support baffle plate belong to the same material, stainless steel is selected, and the surface of the support rib plate is coated to prevent the support rib plate from being corroded in rainy and snowy weather.
The top support base plate 2, the spring support base plate 13 and the tooling support base plate 7 are higher than the height of the connected structure, and a margin is left for welding.
The supporting rib plates 4 play a supporting role, and are as same as the support rib plates 3, 4 groups and 8 groups are formed, and each group is uniformly distributed around the upright column.
The spring support 12 is also formed by connecting two rib plates and a spring support baffle 17 at the front end.
The device is fixedly suspended at the top of a high-rise structure, under the action of earthquake or wind load, the controlled structure vibrates to drive the mass ring to move opposite to the main structure, and reaction force is applied to the main structure to control the vibration of the structure, and energy acting on the main structure is dissipated through the steel wire rope shock absorber and the viscous damper, so that the vibration of the structure under the action of external force is controlled, and the vibration reduction effect is achieved.
In this embodiment, the mass of the mass ring 15 and the installation position of the circular TMD damping control device should be determined according to the specific situation of the structure, so as to achieve the best damping effect.
The invention successfully applies the TMD to the supporting upright post of the ultra-high wind driven generator by proposing the design of the circular ring type TMD arranged at the top of the tower frame. The traditional TMD is mostly applied to high-rise buildings, the damping effect in many directions is not ideal, and the damping device can be effectively arranged on the top of a tower-shaped upright post by designing the top support and changing the shape of the mass block, and the damping effect of the TMD device is not weakened. 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-described embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and any other various modifications, substitutions or alterations made to the above-described structure of the present invention without departing from the basic technical idea of the present invention as set forth in the following claims, and the technical knowledge and conventional means of the field of the present invention will be within the scope of the present invention.
Claims (6)
1. The utility model provides a TMD vibration damper for super high wind turbine stand, includes top support, quality ring (15), viscous damper (14) of equipartition around stand (1) outside, its characterized in that: the support comprises a top support base plate (2), a support rib plate (3), a support baffle plate (6) at the front end, a support rib plate (4) and a support top plate (5) above; a support rib plate (4) is welded below the support rib plate (3), the other end of the support rib plate (4) is welded on the top support base plate (2), and a hole is formed in the front end of the support rib plate (3) so as to facilitate a bolt to pass through to hang a steel wire rope (18); the mass ring (15) is formed by combining 4 quarter circular rings through a mass block connecting plate (10), and the mass ring (15) is suspended by a top support through 4 lifting lugs uniformly distributed on the top by using a steel wire rope (18); the tool support comprises four groups of support plates (8) and connecting plates (9), the tool support is respectively connected with the stand column and the mass ring and staggered with the steel wire rope shock absorber (11), the two support plates (8) are connected through the connecting plates (9), one support plate (8) is welded on the mass ring (15), the other support plate (8) is welded on a tool support base plate (7), and the tool support base plate (7) is connected with the stand column (1) through welding; one end of the viscous damper (14) is welded on the spring support base plate (13), and the other end of the viscous damper is connected to the mass ring (15), and the viscous damper is installed right above each steel wire rope shock absorber (11) and is installed in the same direction as the installation direction of the steel wire rope shock absorber.
2. The TMD damping device for an ultra-high wind turbine column according to claim 1, wherein: the top support base plate, the tool support base plate and the spring support base plate are made of the same materials as the stand columns.
3. The TMD damping device for an ultra-high wind turbine column according to claim 2, wherein: the height of the top support base plate and the spring support base plate is higher than the distance from the support rib plate (3) to the support rib plate (4), the height of the spring support base plate (13) is higher than the height of the spring support and the distance from the spring support to the viscous damper (14), and the height of the tool support base plate is higher than the height of the support rib plate (3).
4. The TMD damping device for an ultra-high wind turbine column according to claim 1, wherein: 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.
5. The TMD damping device for an ultra-high wind turbine column according to claim 1, wherein: the number of the tool supports and the number of the spring supports are 4, the installation position of the tool supports is staggered with the position of the spring supports, the specific position is adjustable, and the tool supports can be disassembled after the installation is completed.
6. The TMD damping device for an ultra-high wind turbine column according to claim 1, wherein: gaps at two sides of the bolt hole suspension steel wire rope of the support rib plate are filled with elastic washers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010728550.0A CN111779152A (en) | 2020-07-27 | 2020-07-27 | TMD vibration damper for ultrahigh wind turbine stand column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010728550.0A CN111779152A (en) | 2020-07-27 | 2020-07-27 | TMD vibration damper for ultrahigh wind turbine stand column |
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| CN111779152A true CN111779152A (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010728550.0A Pending CN111779152A (en) | 2020-07-27 | 2020-07-27 | TMD vibration damper for ultrahigh wind turbine stand column |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943844A (en) * | 2021-02-25 | 2021-06-11 | 中国华能集团清洁能源技术研究院有限公司 | Tower barrel structure vibration damper of high-flexibility tower wind generating set |
| CN113152707A (en) * | 2020-12-31 | 2021-07-23 | 同济大学 | Polygonal mass continuously adjustable damper |
| CN113605774A (en) * | 2021-10-11 | 2021-11-05 | 江苏玖泰电力实业有限公司 | Line lateral wind power component for reducing linear rod under extreme strong wind |
| CN113622539A (en) * | 2021-09-23 | 2021-11-09 | 浙江工业大学 | TMD vibration damper containing steel wire rope vibration isolator |
| CN113738587A (en) * | 2021-09-23 | 2021-12-03 | 国电联合动力技术有限公司 | Tower barrel assembly and wind generating set |
| CN114687279A (en) * | 2022-04-01 | 2022-07-01 | 浙江工业大学 | Viaduct vibration reduction system based on annular TMD |
| CN114838078A (en) * | 2022-03-17 | 2022-08-02 | 北京工业大学 | Amplification damping transmission system for vibration control of wind driven generator |
-
2020
- 2020-07-27 CN CN202010728550.0A patent/CN111779152A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152707A (en) * | 2020-12-31 | 2021-07-23 | 同济大学 | Polygonal mass continuously adjustable damper |
| CN112943844A (en) * | 2021-02-25 | 2021-06-11 | 中国华能集团清洁能源技术研究院有限公司 | Tower barrel structure vibration damper of high-flexibility tower wind generating set |
| CN112943844B (en) * | 2021-02-25 | 2022-05-03 | 中国华能集团清洁能源技术研究院有限公司 | Tower barrel structure vibration damper of high-flexibility tower wind generating set |
| CN113622539A (en) * | 2021-09-23 | 2021-11-09 | 浙江工业大学 | TMD vibration damper containing steel wire rope vibration isolator |
| CN113738587A (en) * | 2021-09-23 | 2021-12-03 | 国电联合动力技术有限公司 | Tower barrel assembly and wind generating set |
| CN113622539B (en) * | 2021-09-23 | 2023-01-03 | 浙江工业大学 | TMD vibration damper containing steel wire rope vibration isolator |
| CN113605774A (en) * | 2021-10-11 | 2021-11-05 | 江苏玖泰电力实业有限公司 | Line lateral wind power component for reducing linear rod under extreme strong wind |
| CN114838078A (en) * | 2022-03-17 | 2022-08-02 | 北京工业大学 | Amplification damping transmission system for vibration control of wind driven generator |
| CN114838078B (en) * | 2022-03-17 | 2024-02-06 | 北京工业大学 | Amplification damping transmission system for vibration control of wind driven generator |
| CN114687279A (en) * | 2022-04-01 | 2022-07-01 | 浙江工业大学 | Viaduct vibration reduction system based on annular TMD |
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