WO2022099717A1 - 用于钢管避雷针振动控制的电涡流调谐质量阻尼器 - Google Patents

用于钢管避雷针振动控制的电涡流调谐质量阻尼器 Download PDF

Info

Publication number
WO2022099717A1
WO2022099717A1 PCT/CN2020/129232 CN2020129232W WO2022099717A1 WO 2022099717 A1 WO2022099717 A1 WO 2022099717A1 CN 2020129232 W CN2020129232 W CN 2020129232W WO 2022099717 A1 WO2022099717 A1 WO 2022099717A1
Authority
WO
WIPO (PCT)
Prior art keywords
lightning rod
fixing unit
vibration
mass damper
tuned mass
Prior art date
Application number
PCT/CN2020/129232
Other languages
English (en)
French (fr)
Inventor
黄国
张宏杰
杨风利
韩军科
邵帅
Original Assignee
中国电力科学研究院有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国电力科学研究院有限公司 filed Critical 中国电力科学研究院有限公司
Publication of WO2022099717A1 publication Critical patent/WO2022099717A1/zh

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
    • F16F15/035—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means by use of eddy or induced-current damping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T19/00—Devices providing for corona discharge
    • H01T19/04—Devices providing for corona discharge having pointed electrodes

Definitions

  • the present application relates to the field of wind vibration control of electric power engineering, for example, to an eddy current tuned mass damper used for vibration control of a steel tube lightning rod.
  • the lightning rod is an important part of the substation, it plays an important role in the lightning protection of the substation.
  • the lightning rod In order to prevent the important electrical equipment in the substation from being damaged by lightning strikes, the lightning rod is usually erected in the substation.
  • Lightning rods are usually in the form of independent steel pipes, which are convenient to design, process and install, and are widely used.
  • the lightning rod of the independent steel pipe style also has its shortcomings. When the wind blows through the lightning rod of the steel pipe, alternating vortices will be generated at the rear of the lightning rod of the steel pipe. When the frequency of the vortex shedding is close to the natural frequency of the steel pipe lightning rod, a resonance phenomenon will occur, which is called "vortex-induced vibration" in engineering, or "vortex vibration” for short. This high-frequency reciprocating vibration is likely to cause the steel pipe lightning rod to suffer from vibration fatigue and be damaged. In severe cases, it will cause the steel pipe lightning rod to break or even collapse.
  • the measures to suppress the wind vibration of the steel pipe lightning rod are mainly aerodynamic control measures, mainly by changing the aerodynamic shape of the steel pipe lightning rod, disturbing the regular shedding of the vortex, thereby avoiding the occurrence of vortex vibration and avoiding the vortex vibration fatigue of the steel pipe lightning rod.
  • the main means of suppressing the wind vibration of the steel pipe lightning rod include: arranging a rectangular spoiler along the pipe body at a certain angular interval and spacing on the surface of the independent steel pipe lightning rod, wrapping a helical wire or wrapping a coat with helical ribs, and setting staggered fins.
  • Pneumatic control measures can suppress the vortex-induced vibration of the steel pipe lightning rod to a certain extent, but usually a large number of spoilers or other devices are arranged along the pipe body, which will increase the windshield area, increase the wind load, and affect the overall structural strength of the steel pipe lightning rod. , and a lot of spoilers affect the aesthetics.
  • the present application provides an eddy current tuned mass damper for vibration control of a steel pipe lightning rod, so as to weaken the vibration strength of the overall structure of the steel pipe lightning rod.
  • an eddy current tuned mass damper for steel tube lightning rod vibration control comprising a top fixed unit, a bottom fixed unit, and a plurality of vibration damping components arranged between the top fixed unit and the bottom fixed unit, the top fixed unit
  • the fixed unit is sleeved on the top of the lightning rod and connected with the dust cover on the top of the lightning rod; a magnetic damping structure is arranged in each vibration damping component; in the case of the vibration of the lightning rod, the magnetic damping structure is set to convert the vibration energy into for the eddy current.
  • the magnetic damping structure includes a boom, a magnet and a copper block;
  • the boom is a rod-shaped structure;
  • the magnet is provided with a through hole, and the through hole of the magnet is connected and fixed with the lower end of the boom ;
  • the copper block is arranged below the magnet and has a distance from the magnet.
  • the vibration damping assembly includes: a cylinder in which the magnetic damping structure is arranged; the top end of the cylinder is connected to the top fixing unit, and the bottom end of the cylinder is connected to the top fixing unit.
  • the bottom fixing unit is connected; the upper end of the boom is fixed on the top end inside the cylinder; the copper block is fixed on the bottom end inside the cylinder.
  • the length of the boom is smaller than the length of the cylinder, and the length of the boom is determined according to the wind strength, the vibration frequency of the lightning rod, and the supporting force that the lightning rod can bear.
  • the shape, size and mass of the magnet are set according to the vibration frequency of the lightning rod, the length of the boom and the distance between the magnet and the copper block.
  • the number of the plurality of vibration damping assemblies is 4, which surround the lightning rod and are symmetrically arranged, and the plurality of vibration damping assemblies are set to control the fourth-order vibration of the lightning rod.
  • the top fixing unit is a conical cap-shaped structure
  • the bottom of the top fixing unit is provided with a ferrule
  • the ferrule is a ring-shaped sleeve plate and has a ring-shaped structure.
  • the bottom fixing unit is an annular structure
  • the bottom of each vibration damping assembly is connected and fixed at the edge of the annular structure
  • the center of the annular structure is provided with a fastening collar.
  • the fastening collar is a cylindrical structure with two ends open, and the inner side of the cylindrical structure is connected and fixed with the lightning rod.
  • FIG. 1 is a schematic front view of a structure of an eddy current tuned mass damper for vibration control of a steel tube lightning rod provided by an embodiment of the present application;
  • FIG. 2 is a schematic front view of a top fixing unit structure provided by an embodiment of the present application.
  • FIG. 3 is a schematic top view of a ferrule structure provided by an embodiment of the present application.
  • FIG. 4 is a schematic top view of the structure of a bottom fixing unit provided by an embodiment of the present application.
  • FIG. 5 is a schematic front view of a bottom fixing unit structure provided by an embodiment of the present application.
  • FIG. 6 is a schematic front view of the structure of a vibration damping assembly provided by an embodiment of the present application.
  • FIG. 7 is a schematic front view of a suspension rod structure provided by an embodiment of the present application.
  • the present application provides an eddy current tuned mass damper for the vibration control of the steel pipe lightning rod.
  • the steel tube lightning rod vibrates under the action of wind load, it drives the tuned mass damper to vibrate together.
  • the tuned mass damper is installed on the top of the steel pipe lightning rod, and the inertial force of the magnetic damping structure generated by the tuned mass damper reacts to the steel pipe lightning rod, so that it can tune the vibration of the main structure of the steel pipe lightning rod, thereby reducing the overall structure of the steel pipe lightning rod. vibration intensity.
  • the eddy current tuned mass damper for vibration control of a steel tube lightning rod provided by the present application includes a top fixed unit, a bottom fixed unit, and a plurality of vibration damping components disposed between the top fixed unit and the bottom fixed unit, and the top fixed unit
  • the unit is sleeved on the top of the lightning rod and connected to the dust cover on the top of the lightning rod; a magnetic damping structure is arranged in each vibration damping component; when the lightning rod vibrates, the magnetic damping structure converts the vibration energy into eddy currents.
  • the present application has a good effect on preventing the vortex vibration of the steel pipe lightning rod, does not require external active energy, and has minimal initial friction, is sleeved on the top of the steel pipe lightning rod, and is convenient for installation and construction.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the present application provides an eddy current tuned mass damper for vibration control of a steel pipe lightning rod, comprising a top fixing unit 2 , a bottom fixing unit 3 and a vibration damping unit, the top fixing unit
  • the unit 2 is set at the top of the lightning rod 1 and connected to the dust cover on the top of the lightning rod 1.
  • the bottom fixing unit 3 is a circular ring structure, and the central part of the bottom fixing unit 3 is connected with the lightning rod 1 .
  • the vibration damping unit includes a plurality of cylindrical vibration damping components 4, and a magnetic damping system is arranged in the vibration damping component 4.
  • the vibration damping component 4 surrounds the lightning rod 1 and is fixedly connected between the top fixing unit 2 and the bottom fixing unit 3.
  • the distance between the magnetic damping system formed by the plurality of damping assemblies 4 and the lightning rod 1 is the same, the height of the plurality of damping assemblies 4 is the same, the The lateral dimensions of the vibration-damping assemblies 4 are the same, the weights of the plurality of vibration-damping assemblies 4 are the same, and the positional relationship between the plurality of vibration-absorbing assemblies 4 and the outside is the same.
  • the structure of the magnetic damping system formed by the vibration damping assembly 4 can be miniaturized according to the vibration intensity of the lightning rod 1.
  • the magnetic damping system formed by the vibration damping assembly 4 also produces damping. function to dissipate the micro-vibration intensity of the lightning rod 1.
  • the vibration damping assembly 4 includes: a cylinder 17 , a hanger rod 18 , a magnet 19 , a copper block 20 , a bolt 23 and a third nut 24 .
  • the hanger rod 18 is a cylindrical rod with circular backing plates at both ends respectively, and the backing boards at both ends have external threads to the end of the hanger rod 18 , and the circular backing plate at the upper end of the hanger rod 18 is more The circular backing plate is larger, and the threaded section at the upper end of the boom 18 is longer than the threaded section at the lower end.
  • the copper block 20 is cylindrical and fixed on the lower end of the inner wall of the cylinder 17 , and a through hole is provided on the cylinder axis of the copper block 20 .
  • the cylinder 17 is a cylindrical hollow cylinder with a closed top, and a small hole is arranged in the center of the closed surface of the top. 2 The edge part is fixedly connected.
  • the bolts 23 pass through the through holes of the copper block 20 and the bottom end of the cylinder 17 in sequence, and are connected to the edge of the bottom fixing unit 3 through the third nuts 24 .
  • the magnet 19 is a cylinder, the radius of which is smaller than the inner diameter of the cylinder 17 , a through hole is provided along the central axis of the magnet 19 , and the threaded section at the lower end of the hanger rod 18 penetrates the through hole of the magnet 19 . , and the magnet 19 is fixedly connected with the second nut 22 .
  • the length of the boom 18 is set according to the wind strength, the vibration frequency range of the lightning rod 1 and the supporting force that the lightning rod 1 can bear.
  • the length of the boom 18 is smaller than the length of the cylinder 17, and the swing range of the boom 18 is within the cylinder wall.
  • the mass of the magnet 19 is set according to the wind strength, the material of the magnet 19 , the bearing capacity of the boom 17 , the vibration frequency of the lightning rod 1 and the supporting force of the lightning rod 1 .
  • the copper block 20 is located at the lower end of the inner wall of the cylinder 17 .
  • the top fixing unit 2 includes: a top cap 5 , an oblique stay rod 6 and a ferrule 7 , and the top cap 5 is a cone at the top of the conical cap-like structure of the top fixing unit 2 The tip, the cover is attached and fastened to the outside of the dust cover of the lightning rod 1 .
  • the ferrule 7 is an annular sleeve plate at the bottom of the top fixing unit 2, and is in the form of a double-ring structure composed of a first annular ring 8 and a first sleeve ring 10, and a long rod passes between the double annular rings.
  • a first circular hole 11 is provided between the adjacent connecting rods of the outer ring.
  • the oblique pull rod 6 is a strip-shaped long rod, one end is fixedly connected to the lower end of the top cap 5 , and the other end is fixedly connected to the edge of the outer ring of the ferrule 7 .
  • the size of the top cap 5 matches the size of the dust cover at the top of the lightning rod 1 .
  • the ferrule 7 includes: a first circular ring 8 , a first connecting rod 9 and a first sleeve ring 10 ,
  • the first collar 10 is sleeved on the lightning rod 1, and is connected with the first ring 8 through a first connecting rod 9.
  • the first ring 8 is provided with a plurality of first circular holes symmetrically distributed. 11.
  • the top of the vibration damping assembly 4 is fixedly connected to the first circular hole 11 .
  • the diameter of the first collar 10 is smaller than the diameter of the first annular ring 8 .
  • the bottom fixing unit 3 includes a second circular ring 12 , a second connecting rod 13 , a fastening collar 14 , a second circular hole 15 and a screw hole 16 .
  • the fastening collar 14 is in the shape of a cylindrical cylinder with both ends open.
  • the fastening collar 14 and the second ring 12 are connected by a second connecting rod 13 .
  • the second ring 12 is provided with a plurality of symmetrically distributed second circular holes 15 . It is fixedly connected to the second circular hole 15 of the second circular ring 12 .
  • the diameter of the fastening collar 14 is smaller than the diameter of the second ring 12 .
  • the fastening collar 14 is symmetrically provided with screw holes 16 on the upper and lower sides of the second ring 12, and the screw holes 16 are also symmetrically distributed on the circumference of the fastening collar 14, and the fastening collar 14 is fastened to the lightning rod. 1 on.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the present application provides an eddy current tuned mass damper for vibration control of a steel tube lightning rod, wherein the vibration damping assembly 4 has at least one layer in the radial direction around the ring lightning rod 1 .
  • the vibration damping assembly 4 when the vibration damping assembly 4 is one layer, the upper part of the vibration damping assembly 4 is connected to the ferrule 7 of the top fixing unit 2 .
  • the upper part of the vibration damping assembly 4 is connected to the outer ring of the ferrule 7 , that is, the first circular hole 11 in the first ring 8 , and is connected and fixed by the first nut 21 .
  • the bottom of the damping assembly 4 is connected to the second ring 12 of the bottom fixing unit 3 .
  • the bottom of the damping assembly 4 is connected to the second circular hole 15 in the second circular ring 12 , and is connected and fixed by the bolt 23 and the third nut 24 , and the bottom fixing unit 3 is fixed to the second circular hole 16 through the screw hole 16 provided on the fastening collar 14 .
  • the vibration damping assembly 4 when the vibration damping assembly 4 is multi-layered in the radial direction around the ring lightning rod 1, the bottom fixing unit 3 and the top end of the vibration damping assembly 4 are fixed in the top fixing unit 2, and the vibration damping unit 4 is fixed in the top fixing unit 2. The bottom end of the assembly 4 is fixed in the bottom fixing unit 3. According to the different lengths in the radial direction, different ring radii are correspondingly set. Symmetrical settings around the ring. Wherein, the set number is consistent with the number of layers of the vibration damping assembly 4 .
  • the annular multi-layer vibration damping assembly 4 is centered between the top fixing unit 2 and the bottom fixing unit 3 with the steel pipe lightning rod 1 as the center, and is arranged in an annular form from the inside to the outside in turn, and the annular form can be a ring
  • the top fixing unit 2 and the bottom fixing unit 3 are in one-to-one correspondence and distributed around the lightning rod 1 , and the bottom end of each vibration damping assembly 4 is connected and fixed on the bottom fixing unit 3 .
  • the structure and size of the multi-layer vibration damping assemblies 4 may be the same, or may be set according to actual requirements, and each vibration damping assembly 4 of each layer is fixed on the top fixing unit 2 and the bottom fixing unit 3 .
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the present application provides an eddy current tuned mass damper for vibration control of a steel tube lightning rod, and the vibration damping assembly 4 is at least one layer in the longitudinal direction.
  • the vibration damping assembly 4 is one layer, the upper part of the vibration damping assembly 4 is connected to the ferrule 7 of the top fixing unit 2 .
  • the upper part of the vibration damping assembly 4 is connected to the outer ring of the ferrule 7 , that is, the first circular hole 11 in the first ring 8 , and is connected and fixed by the first nut 21 .
  • the bottom of the damping assembly 4 is connected to the second ring 12 of the bottom fixing unit 3 .
  • the bottom of the damping assembly 4 is connected to the second circular hole 15 in the second circular ring 12 , and is connected and fixed by the bolt 23 and the third nut 24 , and the bottom fixing unit 3 is fixed to the second circular hole 16 through the screw hole 16 provided on the fastening collar 14 .
  • the vibration damping assembly 4 when the vibration damping assembly 4 is multi-layered, the number of bottom fixing units 3 is consistent with the number of the vibration damping components 4;
  • the steel tube lightning rods 1 are arranged at intervals from top to bottom in sequence and are distributed around the lightning rods 1 in a one-to-one correspondence, and the bottom end of each vibration damping assembly 4 is connected and fixed on the bottom fixing unit 3 .
  • the structure and size of the multi-layer vibration damping assemblies 4 may be the same, or may be set according to actual requirements, and each vibration damping assembly 4 of each layer is fixed on the bottom fixing unit 3 .
  • the word "exemplary” means “serving as an example, embodiment, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments. While various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

一种用于钢管避雷针振动控制的电涡流调谐质量阻尼器。该用于钢管避雷针振动控制的电涡流调谐质量阻尼器包括：顶部固定单元(2)、底部固定单元(3)和设置于所述顶部固定单元(2)、所述底部固定单元(3)之间的多个减振组件(4)，所述顶部固定单元(2)设置为套置于避雷针(1)顶端，与所述避雷针(1)顶部的防尘罩连接；每个减振组件(4)内设置磁阻尼结构；在所述避雷针(1)振动的情况下，所述磁阻尼结构设置为将振动能量转化为电涡流。

Description

用于钢管避雷针振动控制的电涡流调谐质量阻尼器
本申请要求在2020年11月11日提交中国专利局、申请号为202011253057.4的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及电力工程风振控制领域，例如涉及一种用于钢管避雷针振动控制的电涡流调谐质量阻尼器。
背景技术
因为避雷针是变电站的重要组成部分，在变电站防雷方面具有重要作用，为避免变电站内的重要电气设备遭受雷击而损坏，通常会在变电站内架设避雷针。避雷针通常采用独立钢管样式，设计、加工和安装都比较方便，被广泛使用。但是独立钢管样式的避雷针也有其不足，当风吹过钢管避雷针时，会在钢管避雷针后部产生交替脱落的旋涡，旋涡会产生横风，并产生向上的旋涡脱力。当旋涡脱落的频率与钢管避雷针的固有频率相接近时，就会发生共振现象，工程中称之为“涡激振动”，简称为“涡振”。这种高频往复的振动，很有可能引起钢管避雷针发生振动疲劳而被破坏，严重时会导致钢管避雷针的断裂甚至倒塌。
抑制钢管避雷针风振的措施主要是气动控制措施，主要是通过改变钢管避雷针的气动外形，扰乱漩涡的规则脱落，从而避免涡振的发生，避免钢管避雷针涡振疲劳。抑制钢管避雷针风振的主要实现手段包括：在独立式钢管避雷针的外表，以一定的角度间隔和间距沿管身布置矩形扰流板、缠绕螺旋线或包裹带有螺旋肋条的外衣，以及设置交错的鱼鳍板。
气动控制措施可以在一定程度上抑制钢管避雷针的涡激振动，但是通常要沿管身布置大量的扰流板或其它装置，会造成挡风面积增加，增大风荷载，影响钢管避雷针的整体结构强度，而且大量的扰流板影响美观。
发明内容
本申请提供了一种用于钢管避雷针振动控制的电涡流调谐质量阻尼器，以减弱钢管避雷针整体结构的振动强度。
提供了一种用于钢管避雷针振动控制的电涡流调谐质量阻尼器，包括顶部固定单元、底部固定单元和设置于所述顶部固定单元、底部固定单元之间的多 个减振组件，所述顶部固定单元套置于避雷针顶端，与避雷针顶部的防尘罩连接；每个减振组件内设置磁阻尼结构；在所述避雷针振动的情况下，所述磁阻尼结构设置为将振动能量转化为电涡流。
可选的，所述磁阻尼结构包括吊杆、磁铁和铜块；所述吊杆为杆状结构；所述磁铁设置有通孔，所述磁铁的通孔与所述吊杆下端连接固定；所述铜块设置于所述磁铁下方，并与所述磁铁之间具有距离。
可选的，所述减振组件包括：圆筒，所述磁阻尼结构设置于所述圆筒内；所述圆筒的顶端与所述顶部固定单元连接，所述圆筒的底端与所述底部固定单元连接；所述吊杆的上端固定于所述圆筒内部的顶端；所述铜块固定于所述圆筒内部的底端。
可选的，所述吊杆的长度小于所述圆筒的长度，且所述吊杆的长度根据风力强度、所述避雷针的振动频率及所述避雷针所能承受的支撑力确定。
可选的，所述磁铁的形状、大小以及质量根据所述避雷针的振动频率、所述吊杆的长度及所述磁铁与所述铜块的距离设置。
可选的，所述多个减振组件的数量为4个，环绕在避雷针四周，呈对称设置，所述多个减振组件设置为控制所述避雷针的四阶振动。
可选的，所述顶部固定单元为锥形帽状结构，所述顶部固定单元的底部设置卡套，所述卡套为圆环形套板，呈圆环状结构。
可选的，所述帽状结构的尖部为顶帽，所述顶帽罩贴并紧固连接于所述避雷针的防尘罩外侧，所述顶帽的下端和所述卡套外环的边缘之间设置有斜拉杆。
可选的，所述底部固定单元为环形结构，每个减振组件的底部连接固定在所述环形结构的边缘处，所述环形结构的中心设置紧固套环。
可选的，所述紧固套环为两端开口的筒状结构，所述筒状结构的内侧与所述避雷针连接固定。
附图说明
图1本申请实施例提供的一种用于钢管避雷针振动控制的电涡流调谐质量阻尼器结构正视示意图；
图2本申请实施例提供的一种顶部固定单元结构正视示意图；
图3本申请实施例提供的一种卡套结构俯视示意图；
图4本申请实施例提供的一种底部固定单元结构俯视示意图；
图5本申请实施例提供的一种底部固定单元结构正视示意图；
图6本申请实施例提供的一种减振组件结构正视示意图；
图7本申请实施例提供的一种吊杆结构正视示意图。
附图标号说明
1-避雷针；2-顶部固定单元；3-底部固定单元；4-减振组件；5-顶帽；6-斜拉杆；7-卡套；8-第一圆环；9-第一连接杆；10-第一套环；11-第一圆孔；12-第二圆环；13-第二连接杆；14-紧固套环；15-第二圆孔；16-螺孔；17-圆筒；18-吊杆；19-磁铁；20-铜块；21-第一螺母；22-第二螺母；23-螺栓；24-第三螺母。
具体实施方式
针对钢管避雷针的涡振问题，本申请提供了一种用于钢管避雷针振动控制的电涡流调谐质量阻尼器。当钢管避雷针在风荷载的作用下产生振动时，带动调谐质量阻尼器一起振动。调谐质量阻尼器安装于钢管避雷针的顶部，调谐质量阻尼器产生的磁阻尼结构惯性力反作用到钢管避雷针上，使其对钢管避雷针主结构的振动起到调谐作用，从而达到减弱钢管避雷针整体结构的振动强度。本申请提供的用于钢管避雷针振动控制的电涡流调谐质量阻尼器包括顶部固定单元、底部固定单元和设置于所述顶部固定单元、底部固定单元之间的多个减振组件，所述顶部固定单元套置于避雷针顶端，与避雷针顶部的防尘罩连接；每个减振组件内设置磁阻尼结构；当所述避雷针振动时，所述磁阻尼结构将振动能量转化为电涡流。相比于相关技术，本申请对防止钢管避雷针涡振的效果好，无需外界提供主动能量，且初始摩擦极小，套接于钢管避雷针顶部，安装方便，便于施工。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
实施例1:
在本申请中，如图1所示，本申请提供了一种用于钢管避雷针振动控制的电涡流调谐质量阻尼器，包括顶部固定单元2、底部固定单元3和减振单元，所述顶部固定单元2套置于避雷针1顶端，与避雷针1顶部的防尘罩连接。所述底部固定单元3为圆环形的套环结构，底部固定单元3的中心部位与避雷针1连接。所述减振单元包括多个筒状减振组件4，减振组件4内设置磁阻尼系统，减振组件4环绕避雷针1周围，并固定连接于顶部固定单元2和底部固定单元3之间，通过调节每套磁阻尼系统的设置来控制避雷针1的前四阶振动，采用调谐减振作用，在磁阻尼系统内将避雷针1的振动转化为磁感线阻尼切割，将避 雷针1的振动转化为涡电流所产生的热能耗散释放。
在本申请中，满足以下特征中的至少之一或以下特征均不满足：多个减振组件4构成的磁阻尼系统与避雷针1的距离相同、多个减振组件4的高度相同、多个减振组件4的横向尺寸相同、多个减振组件4的重量相同及多个减振组件4与外界的连接位置关系相同。
在本申请中，所述减振组件4构成的磁阻尼系统的结构可以按避雷针1振动强度小型化配置，在避雷针1微振动情况下，减振组件4构成的磁阻尼系统也产生阻尼作用，耗散避雷针1微振动强度。
在本申请中，如图6所示，所述减振组件4包括：圆筒17、吊杆18、磁铁19、铜块20、螺栓23和第三螺母24。如图7所示，所述吊杆18为圆柱形杆，两端分别设置有圆形垫板，两端的垫板至吊杆18末端有外螺纹，吊杆18上端的圆形垫板比下端的圆形垫板大，吊杆18上端的螺纹段比下端的螺纹段长。
所述铜块20为圆柱形，固定于所述圆筒17内壁的下端，铜块20的柱体轴心上设置有通孔。
所述圆筒17为顶端封闭的圆柱形中空筒，顶端封闭面的中心设置小孔，所述吊杆18上端依次贯穿圆筒17顶端的小孔和顶部固定单元2边缘部，与顶部固定单元2边缘部固定连接。
所述螺栓23依次贯穿所述铜块20的通孔、圆筒17底端，并通过所述第三螺母24连接于所述底部固定单元3的边缘部。
所述磁铁19为圆柱体，其半径小于所述圆筒17的内径，沿所述磁铁19的本体中心轴线设置有孔通，所述吊杆18下端的螺纹段贯穿所述磁铁19的孔通，与所述磁铁19通过第二螺母22固定连接。
在本申请中，所述吊杆18的长度根据风力强度、避雷针1的振动频率范围和避雷针1所能承受的支撑力设置。
在本申请中，所述吊杆18的长度小于圆筒17的长度，吊杆18的摆动范围在筒壁内。
在本申请中，所述磁铁19的质量根据风力强度、磁铁19的材质、吊杆17的承载力、避雷针1的振动频率及避雷针1的支承力设置。
在本申请中，所述铜块20在圆筒17内壁的下端位置，铜块20在圆筒17的位置依据吊杆18长度和磁铁19质量及磁铁19的磁强度设置。
在本申请中，如图2所示，所述顶部固定单元2包括：顶帽5、斜拉杆6和卡套7，所述顶帽5为顶部固定单元2的圆锥形帽状结构顶端的锥尖部，罩贴并 紧固连接于避雷针1的防尘罩外侧。
如图3所示，所述卡套7为顶部固定单元2底部的圆环形套板，呈第一圆环8和第一套环10构成的双圆环结构，双圆环间通过长杆连接，外圆环的相邻连接杆间设置第一圆孔11。
所述斜拉杆6为条状长杆，一端固定连接顶帽5下端，另一端固定连接在卡套7外环的边缘。
在本申请中，所述顶帽5的尺寸与避雷针1顶端防尘罩尺寸相匹配。
在本申请中，所述斜拉杆6为多根，对称分布于避雷针1四周。
在本申请中，如图3所示，所述卡套7包括：第一圆环8、第一连接杆9和第一套环10，
所述第一套环10套置于避雷针1上，并与第一圆环8之间通过第一连接杆9连接，第一圆环8圆环上设置有多个对称分布的第一圆孔11，所述减振组件4的顶部固定连接于第一圆孔11上。其中，第一套环10的直径小于第一圆环8的直径。
在本申请中，如图4和5所示，所述底部固定单元3包括第二圆环12、第二连接杆13、紧固套环14、第二圆孔15和螺孔16，所述紧固套环14为两端开口的圆柱筒状。
所述紧固套环14与第二圆环12之间通过第二连接杆13连接，第二圆环12圆环上设置有多个对称分布的第二圆孔15，减振组件4的底部固定连接于第二圆环12的第二圆孔15上。其中，紧固套环14的直径小于第二圆环12的直径。
所述紧固套环14在第二圆环12上下两侧分布对称设置有螺孔16，且螺孔16在紧固套环14的圆周上也对称分布，紧固套环14紧固于避雷针1上。
实施例2:
在本申请中，本申请提供了一种用于钢管避雷针振动控制的电涡流调谐质量阻尼器，所述减振组件4在环避雷针1周围的径向上至少一层。如图1至6和所示，当所述减振组件4为一层时，减振组件4上方连接顶部固定单元2的卡套7。例如减振组件4上方连接于卡套7外圆环上，即第一圆环8中的第一圆孔11中，通过第一螺母21连接固定。所述减振组件4底部连接于底部固定单元3的第二圆环12中。例如减振组件4底部连接于第二圆环12中的第二圆孔15，通过螺栓23和第三螺母24连接固定，底部固定单元3通过紧固套环14上设置的螺孔16固定于避雷针1上。
在本申请中，当所述减振组件4在环避雷针1周围的径向上为多层时，底部固定单元3和所述减振组件4的顶端固定于顶部固定单元2中，所述减振组件4的底端固定于所述底部固定单元3中，依据径向上长度不同，对应设置不同的圆环半径，在同一平面上的同心圆环径向上通过连接杆连接，该连接杆可以绕圆环周围对称设置。其中，设置的数量与所述减振组件4的层数一致。
在本申请中，圆环形多层减振组件4在顶部固定单元2和底部固定单元3之间以钢管避雷针1为中心，依次从内至外间隔设置环形形式，该环形形式可以是圆环或矩形环，并在顶部固定单元2和底部固定单元3上一一对应并分布于避雷针1的周围，且每个所述减振组件4底端连接固定在底部固定单元3上。
在本申请中，多层所述减振组件4的结构大小可以相同，也可根据实际需求设置，每层的每个减振组件4固定于顶部固定单元2和底部固定单元3上。
实施例3:
在本申请中，本申请提供了一种用于钢管避雷针振动控制的电涡流调谐质量阻尼器，所述减振组件4纵向上为至少一层。如图1至6所示，当所述减振组件4为一层时，减振组件4上方连接顶部固定单元2的卡套7。例如减振组件4上方连接于卡套7外圆环上，即第一圆环8中的第一圆孔11中，通过第一螺母21连接固定。所述减振组件4底部连接于底部固定单元3的第二圆环12中。例如减振组件4底部连接于第二圆环12中的第二圆孔15，通过螺栓23和第三螺母24连接固定，底部固定单元3通过紧固套环14上设置的螺孔16固定于避雷针1上。
在本申请中，当所述减振组件4为多层时，底部固定单元3的数量与所述减振组件4的数量一致；所述多层减振组件4和多个底部固定单元3按钢管避雷针1依次从上至下间隔设置并一一对应分布于避雷针1的周围，且每个所述减振组件4底端连接固定在底部固定单元3上。
在本申请中，多层所述减振组件4的结构大小可以相同，也可根据实际需求设置，每层的每个减振组件4固定于底部固定单元3上。
本在这里专用的词“示例性”意为“用作例子、实施例或说明性”。这里作为“示例性”所说明的任何实施例不必解释为优于或好于其它实施例。尽管在附图中示出了实施例的多种方面，但是除非特别指出，不必按比例绘制附图。

Claims (10)

  1. 一种用于钢管避雷针振动控制的电涡流调谐质量阻尼器，包括：顶部固定单元(2)、底部固定单元(3)和设置于所述顶部固定单元(2)、所述底部固定单元(3)之间的多个减振组件(4)；
    所述顶部固定单元(2)设置为套置于避雷针(1)顶端，与所述避雷针(1)顶部的防尘罩连接；
    每个减振组件(4)内设置磁阻尼结构，在所述避雷针(1)振动的情况下，所述磁阻尼结构设置为将振动能量转化为电涡流。
  2. 根据权利要求1所述的电涡流调谐质量阻尼器，其中，所述磁阻尼结构包括吊杆(18)、磁铁(19)和铜块(20)；
    所述吊杆(18)为杆状结构；
    所述磁铁(19)设置有通孔，所述磁铁(19)的通孔与所述吊杆(18)下端连接固定；
    所述铜块(20)设置于所述磁铁(19)下方，并与所述磁铁(19)之间具有距离。
  3. 根据权利要求2所述的电涡流调谐质量阻尼器，其中，所述减振组件(4)包括：圆筒(17)，所述磁阻尼结构设置于所述圆筒(17)内；
    所述圆筒(17)的顶端与所述顶部固定单元(2)连接，所述圆筒(17)的底端与所述底部固定单元(3)连接；
    所述吊杆(18)的上端固定于所述圆筒(17)内部的顶端；所述铜块(20)固定于所述圆筒(17)内部的底端。
  4. 根据权利要求3所述的电涡流调谐质量阻尼器，其中，所述吊杆(18)的长度小于所述圆筒(17)的长度，且所述吊杆(18)的长度根据风力强度、所述避雷针(1)的振动频率及所述避雷针(1)所能承受的支撑力确定。
  5. 根据权利要求2所述的电涡流调谐质量阻尼器，其中，所述磁铁(19)的形状、大小以及质量根据所述避雷针(1)的振动频率、所述吊杆(18)的长度及所述磁铁(19)与所述铜块(20)的距离设置。
  6. 根据权利要求1所述的电涡流调谐质量阻尼器，其中，所述多个减振组件(4)的数量为4个，环绕在所述避雷针(1)四周，呈对称设置，所述多个减振组件(4)设置为控制所述避雷针(1)的四阶振动。
  7. 根据权利要求1所述的电涡流调谐质量阻尼器，其中，所述顶部固定单元(2)为锥形帽状结构，所述顶部固定单元(2)的底部设置卡套(7)，所述卡套(7)为圆环形套板，呈圆环状结构。
  8. 根据权利要求7所述的电涡流调谐质量阻尼器，其中，所述锥形帽状结构的尖部为顶帽(5)，所述顶帽(5)罩贴并固定连接于所述避雷针(1)的防尘罩外侧，所述顶帽(5)的下端和所述卡套(7)外环的边缘之间设置有斜拉杆(6)。
  9. 根据权利要求7所述的电涡流调谐质量阻尼器，其中，所述底部固定单元(3)为环形结构，每个减振组件(4)的底部连接固定在所述环形结构的边缘处，所述环形结构的中心设置紧固套环(14)。
  10. 根据权利要求9所述的电涡流调谐质量阻尼器，其中，所述紧固套环(14)为两端开口的筒状结构，所述筒状结构的内侧与所述避雷针(1)连接固定。
PCT/CN2020/129232 2020-11-11 2020-11-17 用于钢管避雷针振动控制的电涡流调谐质量阻尼器 WO2022099717A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011253057.4A CN112460194A (zh) 2020-11-11 2020-11-11 一种钢管避雷针振动控制电涡流调谐质量阻尼器
CN202011253057.4 2020-11-11

Publications (1)

Publication Number Publication Date
WO2022099717A1 true WO2022099717A1 (zh) 2022-05-19

Family

ID=74826566

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/129232 WO2022099717A1 (zh) 2020-11-11 2020-11-17 用于钢管避雷针振动控制的电涡流调谐质量阻尼器

Country Status (2)

Country Link
CN (1) CN112460194A (zh)
WO (1) WO2022099717A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115030016A (zh) * 2022-06-23 2022-09-09 河海大学 一种用于悬索桥吊索减振的二重调谐质量阻尼器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150075932A1 (en) * 2013-09-15 2015-03-19 Valmont Industries, Inc. Vibration mitigation device
DE102013226410A1 (de) * 2013-12-18 2015-06-18 Robert Bosch Gmbh Mechanische Schwingungsdämpfereinrichtung für schwingungsbeaufschlagte Maschinenteile
CN206529919U (zh) * 2017-03-14 2017-09-29 青岛科技大学 一种新型摆式电涡流调谐质量阻尼器
CN109914633A (zh) * 2019-03-28 2019-06-21 云南震安减震科技股份有限公司 电涡流阻尼器及电涡流调谐质量阻尼器
CN111043210A (zh) * 2019-11-29 2020-04-21 中国电力科学研究院有限公司 一种套环式电涡流调谐质量阻尼器
CN111043211A (zh) * 2019-11-29 2020-04-21 中国电力科学研究院有限公司 一种内置式电涡流调谐质量阻尼器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150075932A1 (en) * 2013-09-15 2015-03-19 Valmont Industries, Inc. Vibration mitigation device
DE102013226410A1 (de) * 2013-12-18 2015-06-18 Robert Bosch Gmbh Mechanische Schwingungsdämpfereinrichtung für schwingungsbeaufschlagte Maschinenteile
CN206529919U (zh) * 2017-03-14 2017-09-29 青岛科技大学 一种新型摆式电涡流调谐质量阻尼器
CN109914633A (zh) * 2019-03-28 2019-06-21 云南震安减震科技股份有限公司 电涡流阻尼器及电涡流调谐质量阻尼器
CN111043210A (zh) * 2019-11-29 2020-04-21 中国电力科学研究院有限公司 一种套环式电涡流调谐质量阻尼器
CN111043211A (zh) * 2019-11-29 2020-04-21 中国电力科学研究院有限公司 一种内置式电涡流调谐质量阻尼器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115030016A (zh) * 2022-06-23 2022-09-09 河海大学 一种用于悬索桥吊索减振的二重调谐质量阻尼器

Also Published As

Publication number Publication date
CN112460194A (zh) 2021-03-09

Similar Documents

Publication Publication Date Title
WO2018176818A1 (zh) 扭缆保护装置、扭缆保护装置的使用方法及风力发电机组
US3612222A (en) Pole damping system
US4406094A (en) Apparatus for anchoring self-supporting, tall structures
WO2022099717A1 (zh) 用于钢管避雷针振动控制的电涡流调谐质量阻尼器
CN110912068B (zh) 一种减少避雷针风振响应的耗能套箍及其施工方法
CN110380375B (zh) 一种触发型压电陶瓷耗能间隔棒
CN105351442A (zh) 一种具有宽频减振性能的惯容与橡胶复合减振器
EP0033223A2 (en) Vibration absorber for aerially suspended conductors and cables
CN210014386U (zh) 一种脱硫脱硝塔用自立式钢烟囱
CN111255105A (zh) 一种多维电磁智能减振装置
US4389225A (en) Electrostatic precipitator having high strength discharge electrode
CN111043210A (zh) 一种套环式电涡流调谐质量阻尼器
CN111043211A (zh) 一种内置式电涡流调谐质量阻尼器
JP5885389B2 (ja) 集合煙突
CN214404497U (zh) 一种钢管避雷针振动控制电涡流调谐质量阻尼器
CN111519969A (zh) 一种钢管塔微风振动气动减振装置
CN208386105U (zh) 一种降低风致振动的变电站避雷针减振装置
CN213234471U (zh) 一种钢管塔微风振动气动减振装置
KR101281443B1 (ko) 분할 단면 조립형 하부 등주를 구비한 가로등 등주
CN215719243U (zh) 塔筒组件及风力发电机组
CN109038455A (zh) 一种变电站避雷针减振装置
CN213452002U (zh) 一种电磁阀减振装置
CN210074428U (zh) 避雷器用高强度过渡连接法兰
CN211711433U (zh) 一种电动车轮毂转运架
CN209834019U (zh) 一种吸能棒

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20961271

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 23/10/2023)