CN103557266A - Multilayer spherical container damper - Google Patents

Multilayer spherical container damper Download PDF

Info

Publication number
CN103557266A
CN103557266A CN201310513960.3A CN201310513960A CN103557266A CN 103557266 A CN103557266 A CN 103557266A CN 201310513960 A CN201310513960 A CN 201310513960A CN 103557266 A CN103557266 A CN 103557266A
Authority
CN
China
Prior art keywords
container
liquid
steel ball
damper
vessel
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201310513960.3A
Other languages
Chinese (zh)
Inventor
陈俊岭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tongji University
Original Assignee
Tongji University
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 Tongji University filed Critical Tongji University
Priority to CN201310513960.3A priority Critical patent/CN103557266A/en
Publication of CN103557266A publication Critical patent/CN103557266A/en
Pending legal-status Critical Current

Links

Classifications

    • Y02E10/722

Abstract

The invention relates to a multilayer spherical container damper which consists of a fixing support, steel balls, liquid, containers and bolts. The containers are spherical containers, a plurality of containers are sequentially placed on the fixing support from top to bottom, the containers contain any one or all of the steel balls or liquid, and the fixing support is fixed above the multilayer spherical container damper through the screws. The rolling frequency of the steel balls in the containers depends on the container radius and the steel ball radius, the oscillation frequency of the liquid in the containers depends on the liquid level height and the container radius, the masses of the steel balls and the liquid depend on the expected damping effect and are 1.5%-2.5% of first-order modal mass of a wind power generating tower. When the steel ball rolling frequency or the liquid oscillation frequency is almost completely consistent with the natural vibration frequency of the damper, the control effect is good, and therefore the spherical container radius, the steel ball radius and the liquid level height are determined. The multilayer spherical container damper is simple in structure and novel in concept.

Description

Polytrope surface vessel damper
Technical field
The invention belongs to technical field of structural engineering, be specifically related to a kind of polytrope surface vessel damper.
Background technique
Along with the continuous growth of the comsumption of natural resources, energy problem has become the huge challenge that countries in the world are faced jointly.And there are abundant wind energy resources and wide smooth region in sea, make wind power technology become the focus of Recent study and application.For obtaining larger electrical production ability, offshore wind turbine single-machine capacity constantly increases, and size and the weight of blower fan all increase considerably, and for the parts such as cabin and impeller being lifted to the operation of design height place, needs to adopt higher support tower.Yet for land wind-power electricity generation, Oversea wind power generation tower pylon should bear very strong wind load, also can be subject to comprising the effects such as the ground motion of wave, stream and seismic region and the ice in northern marine site shake.Pylon, as elongated tall and slender structure, vibrates under wind load and wave effect, and the maximum harm of tower cylinder vibration is exactly that tower cylinder connection part and some cabin components on it are produced is tired, and the intensity of pylon material reduces greatly, shortens pylon working life.How under this special environment, to reduce efficiently, economically the vibration of structure, become a major issue in wind generating technology.If adopt the method that increases structure self rigidity, utilize self-ability to carry out dissipates vibration energy, as strengthened the sectional dimension of member or the strength grade of raising material etc., this method is both uneconomical, has again larger problem.Due to wind power tower drum inside, be provided with the accessories such as cable, safety line, cat ladder, platform, on space, do not allow to install at tower cylinder top the TMD of several tons of weights, the present invention proposes a kind of polytrope surface vessel damper being arranged on wind power generation stepped, by the appropriate design to quality in vessel radius and container, make the vibration frequency of quality and the tuning vibration damping of realizing of the vibration frequency of structure in container.
Summary of the invention
The object of the present invention is to provide a kind of simple structure, the polytrope surface vessel damper that easy for installation, fabricating cost is cheap.
Polytrope surface vessel damper proposed by the invention can be arranged on wind power generation stepped nacelle top, inside or tower top inner platform, according to the size of installing space, can be designed as multi-form.When installing space is unrestricted, sphere container can be designed to hemisphere, by multilayer fixed support, supported, in container quality can be in container Free Slosh significantly; When installing space is restricted, container can be designed to bottom surface sphere, the upright form of sidewall, and in container, quality can unrestricted motion within the scope of sphere.In container, quality can adopt steel ball, also can adopt liquid alternative.In monolayered vessel, steel ball number is when less (be less than and equal 3), and the athletic performance of steel ball in container is for rolling, and during steel ball number more (more than 6), the athletic performance of steel ball in container is for sliding; While placing liquid in container, when liquid level height be less than spherical radius 1/3 time, the single pendulum that the motion of liquid in sphere container is spherical radius with pendulum length, shows as slip.
Polytrope surface vessel damper proposed by the invention, by fixed support 1, steel ball 2, liquid 3, container 4 and bolt 5, formed, wherein: described container 4 adopts sphere container, several containers 4 are positioned on fixed support 1 from top to bottom successively, each container 4 is interior arranges in steel ball 2 or liquid 3 any or its combination, and described fixed support 1 is fixed on superstructure by bolt 5; The rolling frequency of steel ball in container determined jointly by vessel radius and steel ball radius, the oscillation frequency of liquid in container determined by liquid level height and vessel radius, the effectiveness in vibration suppression that steel ball and liquid quality reach according to expection is definite, and quality is got 1.5% ~ 2.5% of wind power generation stepped single order modal mass; When the natural frequency of vibration of steel ball rolling frequency or liquid oscilaltion frequency and structure is almost completely consistent, control effect better, determine thus sphere vessel radius, steel ball radius and liquid level height.
In the present invention, described fixed support and sphere container can adopt in the light-weight high-strength materials such as glass fibre reinforced plastics, PVC or urethane plastic any.
In the present invention, described sphere inner surface of container is sphere.
In the present invention, steel ball 2 quantity in described each container 4 are 3-6.
In the present invention, the liquid levels height of described each container 4 interior placement is less than vessel radius 1/3.
Polytrope surface vessel spin damper proposed by the invention and general tuned mass damper are different, although wind turbine tower is complicated at wind action lower stress, the direction of vibration of spin and the orientation of oscillation of liquid can be adjusted at any time according to tower oscillation direction.Friction factor adjustment between steel ball or liquid and sphere container can be by processing realization to the roughness of container bottom, and coating butter can reduce the friction factor between steel ball and container, and steel ball rolling amplitude in container can increase; Stickup nylon net cloth etc. can increase the friction factor between liquid and container, reduces the oscillation amplitude of liquid in container.
Accompanying drawing explanation
Fig. 1 is the damper device schematic diagram that in container, quality is steel ball, can be arranged on nacelle top.
Fig. 2 is the damper device schematic diagram that in container, quality is liquid, can be arranged on nacelle top.
Fig. 3 is that in container, quality is the damper device schematic diagram of liquid and steel ball, can be arranged on nacelle top.
Fig. 4 is that in container, quality is spin damper device schematic diagram, can be arranged on engine room inside or tower top inner platform.
Number in the figure: 1 is fixed support, 2 is steel ball, and 3 is liquid, and 4 is container, and 5 is bolt.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment 1: the present invention is applicable to wind power generation stepped polytrope surface vessel damper.In actual use, first according to the inside free space of cabin and platform, determine the placement location of damper, thereby determine the damper form shown in Fig. 1 ~ Fig. 4 of selecting.To intending the wind power generation stepped dynamic property of installation damper, test, determine its single order natural frequency of vibration.Due to the natural frequency of vibration of damper and wind power generation stepped single order natural frequency of vibration effectiveness in vibration suppression when almost equal best, determine thus the rolling frequency of spin in damper or the oscillation frequency of liquid.According to expection, want the effectiveness in vibration suppression reaching, spin or liquid quality be taken as wind power generation stepped single order modal mass 1.5% ~ 2.5% time, effectiveness in vibration suppression can reach 20% ~ 30%.For guaranteeing that the motion of spin in container is for sliding, in individual layer damper, the quantity of steel ball 2 can be designed to 3-6, calculates thus radius and container 4 radiuses of steel ball 2; According to needed steel ball gross mass, determine the number of plies of container 4.When in same container, quality is liquid 3, similar to single pendulum for guaranteeing the motion of liquid 3 in container, liquid level height must not be greater than 1/3 spherical radius, determines thus the number of plies of required container 4.According to the quality of spin or liquid in every layer of container, design fixed support 1.Thus, according to determining design parameter, complete the making of polytrope surface vessel spin damper, and be fixed to predeterminated position by construction bolt 5.
Using method of the present invention is as follows:
1. according to the permission usage space of wind power generation stepped cabin and platform in Practical Project, determine damper form;
2. survey the wind power generation stepped single order natural frequency of vibration;
3. when consistent with natural frequency of structures according to spin rolling frequency, the best principle of effectiveness in vibration suppression, determines the polytrope surface vessel damper natural frequency of vibration;
4. according to default effectiveness in vibration suppression, determine the gross mass of rolling steel balls or liquid;
5. according to the damper natural frequency of vibration, determine vessel radius, steel ball radius and liquid level height;
6. according to steel ball radius or liquid quality, determine the number of plies of container;
7. by design parameter, make damper and be arranged on wind power generation stepped nacelle top, inside or tower top inner platform.

Claims (5)

1. a polytrope surface vessel damper, by fixed support (1), steel ball (2), liquid (3), container (4) and bolt (5), formed, it is characterized in that: described container (4) adopts sphere container, several containers (4) are positioned on fixed support (1) from top to bottom successively, any or its combination is set in each container (4) in steel ball (2) or liquid (3), and described fixed support (1) is fixed on superstructure by bolt (5); The rolling frequency of steel ball in container determined jointly by vessel radius and steel ball radius, the oscillation frequency of liquid in container determined by liquid level height and vessel radius, the effectiveness in vibration suppression that steel ball and liquid quality reach according to expection is definite, and quality is got 1.5% ~ 2.5% of wind power generation stepped single order modal mass; When the natural frequency of vibration of steel ball rolling frequency or liquid oscilaltion frequency and structure is almost completely consistent, control effect better, determine thus sphere vessel radius, steel ball radius and liquid level height.
2. polytrope surface vessel damper according to claim 1, is characterized in that described fixed support and sphere container adopt in glass fibre reinforced plastics, PVC or urethane plastic any.
3. polytrope surface vessel damper according to claim 1, is characterized in that described sphere container is hemispherical dome structure.
4. polytrope surface vessel damper according to claim 1, is characterized in that steel ball (2) quantity in described each container (4) is 3-6.
5. polytrope surface vessel damper according to claim 1, is characterized in that the liquid levels height of placing in described each container (4) is less than vessel radius 1/3.
CN201310513960.3A 2013-10-25 2013-10-25 Multilayer spherical container damper Pending CN103557266A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310513960.3A CN103557266A (en) 2013-10-25 2013-10-25 Multilayer spherical container damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310513960.3A CN103557266A (en) 2013-10-25 2013-10-25 Multilayer spherical container damper

Publications (1)

Publication Number Publication Date
CN103557266A true CN103557266A (en) 2014-02-05

Family

ID=50011593

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310513960.3A Pending CN103557266A (en) 2013-10-25 2013-10-25 Multilayer spherical container damper

Country Status (1)

Country Link
CN (1) CN103557266A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103807352A (en) * 2014-02-25 2014-05-21 南京捷诺环境技术有限公司 Bumper for heavy photoelectric equipment
WO2015172112A1 (en) * 2014-05-09 2015-11-12 Valmont Industries, Inc. Method and apparatus for damping vibration of poles
CN105422711A (en) * 2015-12-31 2016-03-23 中国地震局工程力学研究所 Overhead type MTMD (multiple tuned mass dampers) damping device
CN105443634A (en) * 2016-01-20 2016-03-30 上海风畅土木工程技术有限公司 Basin type particle shock absorber with dual functions of tuning and collision
CN109139769A (en) * 2018-07-23 2019-01-04 大连理工大学 Polycyclic shape Tuned Liquid and its method based on extra-high voltage composite bushing
CN109577731A (en) * 2018-11-07 2019-04-05 同济大学 A kind of multilayer Tuned Liquid for Oversea wind power generation tower
US20190154099A1 (en) * 2017-11-21 2019-05-23 Valmont Industries, Inc. Method and apparatus of providing energy absorption for vibration dampening in a horizontal plane
CN111472937A (en) * 2020-04-10 2020-07-31 三一重能有限公司 Liquid damper, wind driven generator tower and wind driven generator
CN111720482A (en) * 2020-06-18 2020-09-29 哈尔滨工程大学 Three-dimensional coupling collision rail type nonlinear vibration damping device
CN112761401A (en) * 2021-01-13 2021-05-07 清华大学 Multi-layer circular ring-shaped tuning liquid column damper

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01182613A (en) * 1988-01-16 1989-07-20 Toopura:Kk Screw with pilot
JP2004340163A (en) * 2003-05-13 2004-12-02 National Traffic Safety & Environment Laboratory Swing damping device of pendulum type structure
CN200949633Y (en) * 2006-07-10 2007-09-19 中国舰船研究设计中心 Adjustable mass ratio double layer vibration isolator
CN102518742A (en) * 2011-12-28 2012-06-27 中国科学技术大学 Compression bar type passive low-frequency three-dimensional vibration isolator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01182613A (en) * 1988-01-16 1989-07-20 Toopura:Kk Screw with pilot
JP2004340163A (en) * 2003-05-13 2004-12-02 National Traffic Safety & Environment Laboratory Swing damping device of pendulum type structure
CN200949633Y (en) * 2006-07-10 2007-09-19 中国舰船研究设计中心 Adjustable mass ratio double layer vibration isolator
CN102518742A (en) * 2011-12-28 2012-06-27 中国科学技术大学 Compression bar type passive low-frequency three-dimensional vibration isolator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
陈俊岭等: "滚球阻尼器在风力发电塔架中的振动控制", 《同济大学学报(自然科学报)》 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103807352A (en) * 2014-02-25 2014-05-21 南京捷诺环境技术有限公司 Bumper for heavy photoelectric equipment
US20150354791A1 (en) * 2014-05-09 2015-12-10 Valmont Industries, Inc. Method and apparatus for damping vibration of poles
US9593828B2 (en) * 2014-05-09 2017-03-14 Valmont Industries, Inc. Method and apparatus for damping vibration of poles
WO2015172112A1 (en) * 2014-05-09 2015-11-12 Valmont Industries, Inc. Method and apparatus for damping vibration of poles
CN105422711A (en) * 2015-12-31 2016-03-23 中国地震局工程力学研究所 Overhead type MTMD (multiple tuned mass dampers) damping device
CN105443634A (en) * 2016-01-20 2016-03-30 上海风畅土木工程技术有限公司 Basin type particle shock absorber with dual functions of tuning and collision
US10900532B2 (en) * 2017-11-21 2021-01-26 Valmont Industries, Inc. Method and apparatus of providing energy absorption for vibration dampening in a horizontal plane
US20190154099A1 (en) * 2017-11-21 2019-05-23 Valmont Industries, Inc. Method and apparatus of providing energy absorption for vibration dampening in a horizontal plane
CN109139769A (en) * 2018-07-23 2019-01-04 大连理工大学 Polycyclic shape Tuned Liquid and its method based on extra-high voltage composite bushing
CN109577731A (en) * 2018-11-07 2019-04-05 同济大学 A kind of multilayer Tuned Liquid for Oversea wind power generation tower
CN109577731B (en) * 2018-11-07 2020-10-02 同济大学 Multi-layer tuned liquid damper for offshore wind power generation tower
CN111472937A (en) * 2020-04-10 2020-07-31 三一重能有限公司 Liquid damper, wind driven generator tower and wind driven generator
CN111720482A (en) * 2020-06-18 2020-09-29 哈尔滨工程大学 Three-dimensional coupling collision rail type nonlinear vibration damping device
CN112761401A (en) * 2021-01-13 2021-05-07 清华大学 Multi-layer circular ring-shaped tuning liquid column damper

Similar Documents

Publication Publication Date Title
CN103557266A (en) Multilayer spherical container damper
CN203641390U (en) Multilayer spherical container damper
CN106703246A (en) Combined basin-shaped hybrid tuning damper for wind power generation tower
CN101852188B (en) Wind-driven generator tower frame shock absorbing device and design method thereof
CN105209754B (en) Offshore wind turbine on floating assembly comprising combination of shock absorbing means
US10641242B2 (en) Offshore energy storage device
CN102235011A (en) Flexible floating foundation for offshore wind generating sets
Hemmati et al. Vibration suppression of offshore wind turbine foundations using tuned liquid column dampers and tuned mass dampers
CN104533724B (en) Intelligent vibration damping type deep sea floating fan
KR20180126074A (en) Apparatus for converting wave energy into electrical energy and a process for placing such apparatus in a deployment location
CN204553090U (en) Intelligent vibration damping moldeed depth sea floating blower fan
JP2011157971A (en) Support structure for supporting offshore wind turbine
WO2016040746A1 (en) Gravity-based energy-storage system and method
CN102639868B (en) Marine wind turbine whole machine
CN107585268A (en) Tension leg offshore floating type wind driven generator base
Jeon et al. Sloshing characteristics of an annular cylindrical tuned liquid damper for spar-type floating offshore wind turbine
CN205533947U (en) Benzvalene form granule shock absorber with harmonious, collision dual function
CN107201991A (en) A kind of new marine windmill floating platform
CN209483859U (en) Land wind-driven generator tower damping rope
CN101858297A (en) Rolling type surge generation method
CN105443634A (en) Basin type particle shock absorber with dual functions of tuning and collision
CN208633298U (en) A kind of single pendulum-viscous liquid joint damper
CN207686907U (en) A kind of wind-driven generator flexible tower
CN206681917U (en) Marine floating type fan shock-absorbing pedestal
US20140261128A1 (en) Barge Mounted Floating Power Plant

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20140205

C02 Deemed withdrawal of patent application after publication (patent law 2001)