CN109267668A - A kind of broken whirlpool device of the spin inhibiting steel pipe tall and slender structure vortex-induced vibration - Google Patents
A kind of broken whirlpool device of the spin inhibiting steel pipe tall and slender structure vortex-induced vibration Download PDFInfo
- Publication number
- CN109267668A CN109267668A CN201811364295.5A CN201811364295A CN109267668A CN 109267668 A CN109267668 A CN 109267668A CN 201811364295 A CN201811364295 A CN 201811364295A CN 109267668 A CN109267668 A CN 109267668A
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- Prior art keywords
- steel pipe
- induced vibration
- rotating arm
- slender structure
- vortex
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 34
- 239000010959 steel Substances 0.000 title claims abstract description 34
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 23
- -1 annular Chemical compound 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 4
- 230000005764 inhibitory process Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/18—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
-
- 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
- E04H9/14—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 against other dangerous influences, e.g. tornadoes, floods
Abstract
A kind of broken whirlpool device of the spin inhibiting steel pipe tall and slender structure vortex-induced vibration, pedestal including annular, for the outer wall rotary sleeve of pedestal equipped with the rotating arm of annular, i.e. base outer wall is provided with annular groove, ball is provided in groove, ball is embedded between groove and the inner wall of rotating arm；There are four linking arms, four linking arms to be uniformly arranged around the axis of rotating arm for fixed setting on the outer wall of the rotating arm；The other end of the linking arm is fixedly installed the vane of hemisphere shell sape, and the opening direction of four vanes is consistent and vertical with the diametrical direction of rotating arm.In short, the regularity that the present invention is detached from by changing works superficial air vortex, effectively inhibits beam wind to vortex-induced vibration harm caused by steel pipe tall and slender structure, reduces economic loss.
Description
Technical field
The present invention relates to a kind of steel pipe tall and slender structure vortex-induced vibration suppression devices, and in particular to a kind of towering knot of inhibition steel pipe
Whirlpool device is broken in the spin of structure vortex-induced vibration.
Background technique
With the continuous development of society, substation's scale constantly increases, and voltage class is continuously improved, this is but also power transformation structure
The height of frame is also being continuously improved, and in order to avoid lightning stroke, it is lightning-arrest often to establish towering independence in engineer application in substation
Needle, or lightning rod is installed on substation framework, to protect the safety of equipment.Since substation framework mostly uses greatly steel construction special
It is not this light-weight high-strength material of round steel pipe, belongs to steel pipe tall and slender structure, therefore in the case where beam wind is acted on to power, steel pipe circular section
Two sides alternately generate the vortex on detaching structure object surface, when the natural frequency of vibration of component is close with the disengaging frequency of vortex,
Structure can occur resonance and destroy, and this phenomenon is known as vortex-induced vibration, and the long term of vortex-induced vibration not only results in towering knot
The strength reduction of structure even can destroy entire steel pipe tall and slender structure if serious, cause huge economic loss.
Summary of the invention
The present invention provides a kind of broken whirlpool device of the spin for inhibiting steel pipe tall and slender structure vortex-induced vibration, and technology to be solved is asked
It is entitled: to inhibit beam wind to endanger caused by steel pipe tall and slender structure to vortex-induced vibration, reduce economic loss.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme:
A kind of broken whirlpool device of the spin inhibiting steel pipe tall and slender structure vortex-induced vibration, the pedestal including annular, the outer wall rotation of pedestal
Be set with the rotating arm of annular, i.e. the base outer wall groove that is provided with annular, be provided with ball in groove, ball be embedded in groove with
Between the inner wall of rotating arm；There are four linking arms, four linking arms to surround rotating arm for fixed setting on the outer wall of the rotating arm
Axis be uniformly arranged；The other end of the linking arm is fixedly installed the vane of hemisphere shell sape, the opening side of four vanes
To consistent and vertical with the diametrical direction of rotating arm, the diameter of the vane is the 50% ~ 80% of pedestal internal diameter.
Preferably, distribution is provided with several circular through holes on the cup face of the vane.
Preferably, the gross area of the circular through hole is the 10% ~ 20% of cup face area.
Preferably, arc-shaped rib is provided between the adjacent linking arm.
Preferably, it is fixedly connected at the linking arm and the greatest circle section edges of vane.
It is a kind of to use the broken whirlpool device inhibition steel pipe tall and slender structure whirlpool exciting of spin for inhibiting steel pipe tall and slender structure vortex-induced vibration
Dynamic method, the diameter of the vane are the 50% ~ 80% of pedestal internal diameter, and distribution is provided with several circular through holes on the cup face of vane
And the gross area of circular through hole is the 10% ~ 20% of cup face area.
Compared with the existing technology, the invention has the benefit that hemisphere shell sape vane of the present invention drives rotating arm around circle
Circular base is freely rotated, and changes the regularity that works superficial air vortex is detached from, thus the whirlpool exciting for tall and slender structure of drawing up
It is dynamic, avoid it from destroying because of strength reduction；Since device can rotate freely under the action of the wind, in the towering knot of steel pipe of drawing up
While structure vortex-induced vibration, additional wind area and corresponding bring wind load not will increase, to prevent works
Stability reduces；It is provided with several circular holes on cup face, prevents wind-force excessive so that spinning brokenly whirlpool device strength reduction and damaging；
There is circle shape rib connection between the linking arm of rotating arm, it is ensured that the relative position of four linking arms is constant；Structure is simple, dismounting side
Just, economical and practical.In short, the present invention effectively inhibits beam wind to vortex-induced vibration harm caused by steel pipe tall and slender structure, reduce
Economic loss.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is scheme of installation of the present invention.
In figure: 1, pedestal, 2, rotating arm, 3, vane, 4, linking arm, 5, circle shape rib, 6, ribs, 7, towering steel pipe.
Specific embodiment
With reference to the accompanying drawing, the present invention is described further.
As shown in Figure 1, the present invention provides a kind of broken whirlpool device of the spin for inhibiting steel pipe tall and slender structure vortex-induced vibration, including ring
The pedestal 1 of shape, for the outer wall rotary sleeve of pedestal 1 equipped with the rotating arm 2 of annular, i.e. base outer wall is provided with annular groove, groove
It is inside provided with ball, ball is embedded between groove and the inner wall of rotating arm 2, and rotating arm 2 can be free in the horizontal plane around pedestal 1
Rotation；Fixed setting is provided with arc-shaped there are four linking arm 4 between adjacent linking arm 4 on the outer wall of the rotating arm 2
Rib 5, it is ensured that the relative position of four linking arms is constant, and four linking arms 4 are uniformly arranged around the axis of rotating arm 2；It is described
The other end of linking arm 4 is fixedly installed the vane 3 of hemisphere shell sape, the greatest circle section edges of the linking arm 4 and vane 3
Place is fixedly connected；The opening direction of four vanes 3 is consistent and vertical with the diametrical direction of rotating arm 2, and the diameter of the vane 3 is
The 50% ~ 80% of 1 internal diameter of pedestal；Distribution is provided with several circular through holes on the cup face of the vane 3, and the gross area of circular through hole is
The 10% ~ 20% of cup face area prevents wind-force excessive so that spinning brokenly whirlpool device strength reduction and damaging.
As shown in Fig. 2, whirlpool device is broken in a kind of spin for inhibiting steel pipe tall and slender structure vortex-induced vibration provided by the invention, in reality
In the use process of border, towering steel pipe 7 is set to pass through the center of pedestal 1, and pedestal is weldingly fixed on towering 7 outer wall of steel pipe, by
It is all several round steel pipe segmentation compositions in only column lightning rod, the position for being segmented connection is connected using rigid flange, present apparatus requirement
Ribs 6 is being set apart from closer towering 7 interior zones of steel pipe in junction, that is, near nodal, and is being installed near nodal region
The device, not only can increase the rigidity of node region, but also be avoided that the installation of the present apparatus influences the stability of steel-tube construction object；Installation
Vane 3 drives rotating arm 2 to be freely rotated around pedestal 1 under the action of the wind after the completion, and it is de- to change works superficial air vortex
From regularity, so that the vortex-induced vibration for tall and slender structure of drawing up, avoids it from destroying because of strength reduction, since device can be
Wind-force effect under rotate freely, while drawing up steel pipe tall and slender structure vortex-induced vibration, not will increase additional wind area with
And corresponding bring wind load, so that preventing the stability of works reduces.In short, the present invention effectively inhibits beam wind to swash to whirlpool
Vibration is endangered caused by steel pipe tall and slender structure, reduces economic loss.
Claims (6)
1. whirlpool device is broken in a kind of spin for inhibiting steel pipe tall and slender structure vortex-induced vibration, it is characterised in that: the pedestal including annular
(1), rotating arm (2) of the outer wall rotary sleeve of pedestal (1) equipped with annular, i.e. the outer wall of pedestal (1) is provided with the groove of annular, recessed
Ball is provided in slot, ball is embedded between groove and the inner wall of rotating arm (2)；Fixation is set on the outer wall of the rotating arm (2)
It sets there are four linking arm (4), axis of four linking arms (4) around rotating arm (2) is uniformly arranged；The linking arm (4) it is another
One end is fixedly installed the vane (3) of hemisphere shell sape, and the opening direction of four vanes (3) is consistent and straight with rotating arm (2)
Diameter direction is vertical, and the diameter of the vane (3) is the 50% ~ 80% of pedestal (1) internal diameter.
2. whirlpool device is broken in the spin according to claim 1 for inhibiting steel pipe tall and slender structure vortex-induced vibration, it is characterised in that: institute
It states distribution on the cup face of vane (3) and is provided with several circular through holes.
3. whirlpool device is broken in the spin according to claim 2 for inhibiting steel pipe tall and slender structure vortex-induced vibration, it is characterised in that: institute
The gross area for stating circular through hole is the 10% ~ 20% of cup face area.
4. the spin of steel pipe tall and slender structure vortex-induced vibration is inhibited to break whirlpool described in -3 any one claims according to claim 1
Device, it is characterised in that: be provided with arc-shaped rib (5) between the adjacent linking arm (4).
5. the spin of steel pipe tall and slender structure vortex-induced vibration is inhibited to break whirlpool described in -3 any one claims according to claim 1
Device, it is characterised in that: be fixedly connected at the linking arm (4) and the greatest circle section edges of vane (3).
6. a kind of use the broken whirlpool device inhibition steel of spin for inhibiting steel pipe tall and slender structure vortex-induced vibration described in as claimed in claim 1 or 22
The method of pipe tall and slender structure vortex-induced vibration, it is characterised in that: the diameter of the vane (3) is the 50% ~ 80% of pedestal (1) internal diameter,
Distribution is provided with that the gross area of several circular through holes and circular through hole is cup face area on the cup face of the vane (3) 10% ~
20%。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364295.5A CN109267668A (en) | 2018-11-16 | 2018-11-16 | A kind of broken whirlpool device of the spin inhibiting steel pipe tall and slender structure vortex-induced vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364295.5A CN109267668A (en) | 2018-11-16 | 2018-11-16 | A kind of broken whirlpool device of the spin inhibiting steel pipe tall and slender structure vortex-induced vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109267668A true CN109267668A (en) | 2019-01-25 |
Family
ID=65189569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811364295.5A Withdrawn CN109267668A (en) | 2018-11-16 | 2018-11-16 | A kind of broken whirlpool device of the spin inhibiting steel pipe tall and slender structure vortex-induced vibration |
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| Country | Link |
|---|---|
| CN (1) | CN109267668A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056082A (en) * | 2019-05-08 | 2019-07-26 | 重庆交通大学 | Roofs can be reduced and be vortexed the wind proof house to be formed |
| CN110847674A (en) * | 2019-11-22 | 2020-02-28 | 山东大学 | Breeze vibration energy consumption suppression device for rod piece of service steel pipe tower |
| CN113308983A (en) * | 2021-06-17 | 2021-08-27 | 重庆交通大学 | Bridge cable vibration suppression device |
| CN113463782A (en) * | 2020-03-30 | 2021-10-01 | 江苏金风科技有限公司 | Turbulent flow block and vortex-induced vibration suppression device |
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| CN107916899A (en) * | 2017-11-24 | 2018-04-17 | 西南石油大学 | A kind of vortex-induced vibration suppression device and method of the rotatable wavy orifice plate in change aperture |
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| CN209129191U (en) * | 2018-11-16 | 2019-07-19 | 郑州大学 | A kind of broken whirlpool device of the spin inhibiting steel pipe tall and slender structure vortex-induced vibration |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056082A (en) * | 2019-05-08 | 2019-07-26 | 重庆交通大学 | Roofs can be reduced and be vortexed the wind proof house to be formed |
| CN110056082B (en) * | 2019-05-08 | 2020-08-25 | 重庆交通大学 | Wind-resistant house capable of reducing vortex formation on surface of roof |
| CN110847674A (en) * | 2019-11-22 | 2020-02-28 | 山东大学 | Breeze vibration energy consumption suppression device for rod piece of service steel pipe tower |
| CN113463782A (en) * | 2020-03-30 | 2021-10-01 | 江苏金风科技有限公司 | Turbulent flow block and vortex-induced vibration suppression device |
| CN113463782B (en) * | 2020-03-30 | 2022-07-12 | 江苏金风科技有限公司 | Turbulent flow block and vortex-induced vibration suppression device |
| CN113308983A (en) * | 2021-06-17 | 2021-08-27 | 重庆交通大学 | Bridge cable vibration suppression device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190125 |
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| WW01 | Invention patent application withdrawn after publication |