CN213234471U - Breeze vibration pneumatic vibration damper for steel tube tower - Google Patents
Breeze vibration pneumatic vibration damper for steel tube tower Download PDFInfo
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- CN213234471U CN213234471U CN202020558482.3U CN202020558482U CN213234471U CN 213234471 U CN213234471 U CN 213234471U CN 202020558482 U CN202020558482 U CN 202020558482U CN 213234471 U CN213234471 U CN 213234471U
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Abstract
本实用新型提供了一种钢管塔微风振动气动减振装置，所述装置固定安装在所述钢管塔的杆件上，包括：套管(1)；所述套管(1)为空心圆柱结构，包括沿径向对称的两个半套管；所述套管(1)的侧壁上沿轴的方向对称设有孔(3)；当气流通过所述微风振动抑制装置时，气流由所述孔(3)流入所述套管(1)，并从中空部流走；本实用新型装置结构简单，与传统防振装置相比，能够在不改变原主体结构传力路径、载荷分布、刚度分布的前提下，在更宽的风速范围内，适用于任意来流风向的振动控制，避免对钢管塔本身产生附加破坏影响。
The utility model provides a pneumatic vibration damping device for a steel pipe tower, which is fixedly installed on a rod of the steel pipe tower, comprising: a casing (1); the casing (1) is a hollow cylindrical structure , including two half-sleeves symmetrical along the radial direction; the sidewall of the sleeve (1) is provided with holes (3) symmetrically along the axis direction; when the airflow passes through the breeze vibration suppression device, the airflow is The hole (3) flows into the sleeve (1), and flows away from the hollow part; the device of the utility model has a simple structure, and compared with the traditional anti-vibration device, the force transmission path, load distribution, Under the premise of stiffness distribution, in a wider wind speed range, it is suitable for vibration control of any incoming wind direction, avoiding additional damage to the steel tube tower itself.
Description
Technical Field
The utility model relates to a power equipment disaster prevention and reduction technical field, concretely relates to steel-pipe tower breeze vibration pneumatic vibration damper.
Background
The aeolian vibration of the overhead transmission line is a phenomenon that the structure generates high-frequency micro-amplitude vertical vibration due to the fact that an up-down alternating karman vortex is generated on the leeward side of the structure under the excitation of wind, and an up-down alternating force acts on the structure. The wind speed of the vibration phenomenon is generally between 0.5m/s and 10m/s, and the included angle between the incoming wind direction and the structure is generally between 45 and 90 degrees. In recent years, it has been found that even when the terrain is flat, strong vibration is observed even when the wind speed is 10m/s or more. If the amplitude of the breeze vibration exceeds an allowable value, fatigue damage of certain line components, such as fatigue damage or abrasion of pole and tower members, and even vibration, looseness and collapse of the steel tube tower in severe cases, can bring serious harm to the safe operation of a power grid.
In order to cope with the aeolian vibration disaster of the steel pipe tower of the power transmission line, an inner bracing wire is arranged on the whole steel pipe tower body or a current plate is arranged on a local rod piece, which is the most main prevention and control means at present. Practice shows that the reasonable design of the inner stay wires can effectively reduce the overall breeze vibration level of the power transmission tower, but the design and construction are complex. Especially, for the breeze vibration of the local rod piece, the installation of the local internal stay wire changes the overall force transmission path, load distribution and rigidity distribution of the structure, and the specific influence mechanism is yet to be studied deeply. The local rod piece is provided with the flow surrounding plate, although the oscillation starting wind speed of breeze oscillation can be improved within a certain range, the oscillation damping effect is not obvious in a continuous strong wind area.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned not enough that exists among the prior art, the utility model discloses under the prerequisite that does not change former main part structure biography power route, load distribution, rigidity distribution, in wideer wind speed range, from vortex induced vibration essence, provide a steel-pipe tower breeze vibration pneumatic vibration damper and method suitable for arbitrary wind direction incoming flow.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides a little wind vibration pneumatic vibration damper of steel-pipe tower, device fixed mounting be in on the member of steel-pipe tower, include: a sleeve (1);
the sleeve (1) is of a hollow cylindrical structure and comprises two half sleeves which are symmetrical along the radial direction;
holes (3) are symmetrically formed in the side wall of the sleeve (1) along the axial direction;
when the air flow passes through the breeze vibration suppression device, the air flow flows into the sleeve (1) from the hole (3) and flows away from the hollow part.
Preferably, the shape of the aperture (3) comprises: rectangular, circular or trapezoidal.
Preferably, the holes (3) of each half-sleeve are symmetrically arranged.
Preferably, a connecting plate (4) is arranged at the end part of each half sleeve;
the connecting plates (4) of the two half sleeves are connected through galvanized bolts or studs.
Preferably, the sleeve (1) is made of an aging-resistant and corrosion-resistant polymer material.
Preferably, the sleeve (1) is made of the same material as the rod piece of the steel tube tower.
Preferably, the apparatus further comprises: a protective layer (5);
the protective layer (5) is arranged at the joint of the sleeve (1) and the steel pipe tower rod piece.
Preferably, the material of the protective layer (5) is an elastic material with ageing resistance and corrosion resistance.
Compared with the closest prior art, the beneficial effects of the utility model reside in that:
the utility model provides a little wind vibration pneumatic vibration damper of steel-pipe tower, device fixed mounting be in on the member of steel-pipe tower, include: a sleeve (1); the sleeve (1) is of a hollow cylindrical structure and comprises two half sleeves which are symmetrical along the radial direction; holes (3) are symmetrically formed in the side wall of the sleeve (1) along the axial direction; when the air flow passes through the breeze vibration suppression device, the air flow flows into the sleeve (1) from the hole (3) and flows away from the hollow part; the device of the utility model is simple in structure, compare with traditional anti-vibration device, can pass under the prerequisite that power route, load distribution, rigidity distribute at original main body structure not changing, at wideer wind speed within range, be applicable to the vibration control of arbitrary incoming flow wind direction, avoid producing additional destruction influence to steel-pipe tower itself.
Drawings
FIG. 1: the installation schematic diagram of the utility model;
FIG. 2: the utility model is shown in a cross section view A-A in figure 1;
FIG. 3: the utility model is shown in the cross-sectional view B-B in figure 2;
FIG. 4: the enlarged view of the position C in the figure 3 of the utility model;
reference numerals:
1-casing pipe, 2-steel tube tower rod piece, 3-hole, 4-connecting plate and 5-protective layer.
Detailed Description
For better understanding of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
The utility model provides a little wind vibration pneumatic vibration damper of steel-pipe tower, as shown in fig. 1, device fixed mounting be in on the member 2 of steel-pipe tower, include: a sleeve 1;
as shown in fig. 2, the sleeve 1 is a hollow cylindrical structure, and comprises two half sleeves which are symmetrical along the radial direction;
when the air flow passes through the breeze vibration suppression device, the air flow flows into the casing 1 through the holes 3 and flows away from the hollow portion.
The shape of the hole 3 includes: rectangular, circular or trapezoidal.
The holes 3 on each half-sleeve are symmetrically arranged.
As shown in fig. 3, a connecting plate 4 is provided at the end of each half-sleeve;
the connecting plates 4 of the two half-sleeves are connected by galvanized bolts or studs.
The sleeve 1 is made of an aging-resistant and corrosion-resistant polymer material.
The sleeve 1 is made of the same material as the rod piece of the steel tube tower.
As shown in fig. 4, the apparatus further includes: a protective layer 5;
the protective layer 5 is arranged at the joint of the sleeve 1 and the steel pipe tower rod piece 2.
The protective layer 5 is made of an ageing-resistant and corrosion-resistant elastic material.
Specifically, the method comprises the following steps:
a device for suppressing the breeze vibration of a steel tube tower comprises an external perforated sleeve 1, wherein the sleeve is composed of two halves which are symmetrical along the radial direction.
The sleeve 1 has a circular cross-section, having the shape of a hollow cylinder.
The sleeve 1 is installed outside the steel tube tower rod 2 in sections.
The shape of the opening 3 is not limited to rectangular, circular, trapezoidal.
The sleeve is split radially into two symmetrical halves.
At the end of each individual section a connecting plate 4 is arranged, by means of which connecting plate 4 the two sleeve halves are connected.
The connecting plate 4 is fixed by a galvanized bolt and a stud.
The sleeve 1 can be made of the same material as the steel tube tower or an anti-aging and anti-corrosion high polymer material.
When the sleeve 1 is made of metal materials, a protective layer 5 is embedded in the joint of the sleeve and the rod piece.
The protective layer 5 is made of an aging-resistant and corrosion-resistant elastic material.
The utility model can automatically realize the prevention and control of breeze vibration by installing the device corresponding to the size of the steel pipe tower rod piece;
specifically, the method comprises the following steps:
the device corresponding to the size of the steel pipe tower rod piece is arranged on the steel pipe tower rod piece;
the sleeve firstly contacts windward airflow, and the sleeve is of an axisymmetric structure, so that a flow field structure of any incoming airflow direction can be destroyed, and regular vortex shedding can not be formed around the rod piece, thereby inhibiting the steel tube tower breeze vibration caused by wake vortex shedding;
the air flow is removed from the casing air, reducing the level of aerodynamic forces on the rod.
The device provided by the utility model simple structure compares with traditional anti-vibration device, can be applicable to the vibration control of arbitrary incoming flow wind direction, and anti-vibration wind speed scope is wideer, does not change former body structure and passes power route, load distribution, rigidity distribution, avoids producing additional destruction influence to steel-pipe tower itself. From the breeze vibration essence, through the utility model discloses the installation of device for unable formation regular whirlpool takes off around the member, and fundamentally has destroyed the exogenic action that arouses the steel-pipe tower breeze vibration, realizes the prevention and cure of breeze vibration.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above description is only exemplary of the invention and is not intended to limit the invention, and any modifications, equivalent alterations, improvements and the like which are made within the spirit and principle of the invention are all included in the scope of the claims which are appended hereto.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020558482.3U CN213234471U (en) | 2020-04-15 | 2020-04-15 | Breeze vibration pneumatic vibration damper for steel tube tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020558482.3U CN213234471U (en) | 2020-04-15 | 2020-04-15 | Breeze vibration pneumatic vibration damper for steel tube tower |
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| Publication Number | Publication Date |
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| CN213234471U true CN213234471U (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020558482.3U Active CN213234471U (en) | 2020-04-15 | 2020-04-15 | Breeze vibration pneumatic vibration damper for steel tube tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519969A (en) * | 2020-04-15 | 2020-08-11 | 中国电力科学研究院有限公司 | A kind of pneumatic vibration damping device for steel tube tower breeze vibration |
| CN115324410A (en) * | 2022-09-02 | 2022-11-11 | 山东建筑大学 | Steel pipe tower wind vibration control device and steel pipe tower |
-
2020
- 2020-04-15 CN CN202020558482.3U patent/CN213234471U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519969A (en) * | 2020-04-15 | 2020-08-11 | 中国电力科学研究院有限公司 | A kind of pneumatic vibration damping device for steel tube tower breeze vibration |
| CN115324410A (en) * | 2022-09-02 | 2022-11-11 | 山东建筑大学 | Steel pipe tower wind vibration control device and steel pipe tower |
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