CN203603293U - Vortex street type tuned liquid damper - Google Patents
Vortex street type tuned liquid damper Download PDFInfo
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- CN203603293U CN203603293U CN201320654762.4U CN201320654762U CN203603293U CN 203603293 U CN203603293 U CN 203603293U CN 201320654762 U CN201320654762 U CN 201320654762U CN 203603293 U CN203603293 U CN 203603293U
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Abstract
The utility model relates to a vortex street type tuned liquid damper which is economical, practical and good in damping effect. The vortex street type tuned liquid damper comprises a container, a round bluff body, a streamline body, a water body and rectangular partition plates. According to the Karman vortex street principle, the round bluff body is arranged, the water body flows around the round bluff body to form a vortex street, dynamic water pressure is increased, and energy consumption is increased. According to the tuned liquid damping principle, based on a traditional tuned liquid damper, the rectangular partition plates and the streamline body are arranged, the flowing path of the water body and the flowing speed are extended, sloshing damping of the water body at the vortex shedding stage is improved, and therefore the damping effect of the tuned liquid damper of a deep water tank is improved.
Description
Technical field
The utility model relates to a kind of by arrange bluff body in deep water case, increases water body circulation path and forms Karman vortex street, thereby increase energy consumption, improves the vortex street type Tuned Liquid of damping effect, belongs to civil engineering vibration isolation field.
Background technology
In recent years, structural vibration control technology obtains broad research and application in field of civil engineering, and various dampers have been successfully applied to the wind that reduces building structure and have shaken and earthquake response.Tuned Liquid (TLD) is as new structure damping device, and the damping device of comparing other has lot of advantages: (1) economy: the object that does not substantially increase or only increase little civil engineering costs and just can reach damping; (2) simple: can easily water container to be placed on building; (3) be suitable for short-term and long-term use; (4) less maintenance cost; (5) multipurpose: utilize the water tank can be simultaneously as water supply installation and damper.
TLD can be divided into shallow water case and deep water case according to the ratio of the depth of water in water tank and water tank direction of vibration length.Shallow water case, more desirable compared with the deep water water tank effectiveness in vibration suppression of equal in quality, but theoretical model is immature, and purposes is single, and cost is higher, and occupation of land space is large.And deep water case, theoretical model maturation, cost is lower, not only can make damper but also can do fire-fighting and living water use, but damping effect is not good enough.
When the cylinder of an endless of fluid winding flow, will there is boundary layer separation, and after post, form vortex, increase the loss of mechanical energy.Experiment showed, in the scope of fluid reynolds number Re=60～5000, occur the parallel reverse vortex of two strings after cylinder.The all rotations in the direction of the clock of row above in two row vortexs, row below follow counterclockwise rotation; The vortex of upper and lower two row is alternately being arranged.The same vortex row in this proper alignment Zhe Xiang street are called as " Karman vortex street ".The utility model, by arrange bluff body in deep water case, makes water body form Karman vortex street under load action, increases flow resistance, thereby greatly increase power consumption, simultaneously the water body pressure reduction of flowing through before and after bluff body is larger, thereby increases flowing pressure, and therefore deep water case damping effect is improved greatly.
Summary of the invention
The purpose of this utility model is to provide a kind of vortex street type Tuned Liquid of utilizing Karman vortex street and tuning fluid damping damping mechanism.
The vortex street type Tuned Liquid the utility model proposes, formed by container 1, cylindrical bluff body 2, fairing 3, water body 4 and rectangular clapboard 5, wherein: in container 1, a side arranges cylindrical bluff body 2, opposite side arranges fairing 3, some rectangular clapboards 5 are set between cylindrical bluff body 2 and fairing 3, described orthopedic dividing plate 5 is positioned at container 1 middle part, the interior placement water body 4 of container 1, the vibration of water body 4 in container 1 is similar to Tuned Liquid, the mutual friction energy-dissipating of liquid, provide structure restoring force to container 1 lateral pressure, reduce structural response.Under load action, the water body 4 cylindrical bluff body 2 of flowing through, forms Karman vortex street, and rectangular clapboard 5 makes water body 4 in vortex street decline, and while recovering initial flow state, circulation path is increased, and improves slosh damping.The layout of fairing 3 is accelerated water body 4 flowing velocities, increases the reciprocating slosh damping of water body 4.
In the utility model, described container 1 is deep water case, and in container 1, the lenth ratio of the degree of depth of water body 4 and container 1 direction of vibration is greater than 1/8,
In the utility model, described container 1 can by fastening devices be connected by vibration-proof structure, damper is installed and is structurally reached passive energy dissipation effect.
In the utility model, the size of the container 1 of described vortex street type Tuned Liquid, cylindrical bluff body 2, fairing 3, rectangular clapboard 4 and concrete position, need, according to by shock-damping structure and load concrete condition thereof, determine by special structural damping analysis.
Compared to existing technology, advantage of the present utility model is as follows:
(1) the utility model can make damper and can do again fire-fighting and living water use, of many uses, economical and practical.
(2) the utility model utilizes Karman vortex street to form principle, improves the energy consumption of deep water case Tuned Liquid, and its damping effect is improved.
(3) the utility model is compared shallow water case Tuned Liquid, saves a large amount of building usage spaces.
(4) the utility model manufacture craft is simple, and structure understands, is easy to install, and is convenient to promote.
Accompanying drawing explanation
Fig. 1 is the experimental rig 3 dimensional drawing of the utility model embodiment,
Fig. 2 is that water body streams vortex street schematic diagram.
Number in the figure: 1 is that container 1,2 is that cylindrical bluff body, 3 is that fairing, 4 is that water body, 5 is rectangular clapboard.
The specific embodiment
The utility model is made up of parts such as container 1, cylindrical bluff body 2, fairing 3, water body 4 and rectangular clapboards 5.Water body 3 is in the interior vibration of cuboid container 1, and its mechanism of action is similar to Tuned Liquid, and the mutual friction energy-dissipating of liquid, provides structure restoring force to vessel side pressure, reduces structural response.In order to eliminate border for the cylinder impact in flow field around, arrange cylindrical bluff body 2 in container 1 one sides.Under load action, the water body 4 cylindrical bluff body 2 of flowing through, forms Karman vortex street, and energy consumption increases greatly.Arrange multiple rectangular clapboards 5 at container 1 middle part, make water body 4 in vortex street decline, while recovering initial flow state, circulation path is increased, and improves slosh damping.Arrange fairing 3 at container 1 opposite side, accelerate water body 4 flowing velocities, increase the reciprocating slosh damping of water body 4.Container 1 can by fastening devices be connected by vibration-proof structure, damper is installed and is structurally reached passive energy dissipation effect.The size of the container 1 of vortex street type Tuned Liquid, cylindrical bluff body 2, fairing 3, rectangular clapboard 4 and concrete position, need, according to by shock-damping structure and load concrete condition thereof, determine by special structural damping analysis.
Fig. 1 is the 3 dimensional drawing of the utility model experimental rig, and as shown in the figure, container 1 is deep water case, and the ratio that water body 4 degree of depth and container 1 shake direction is greater than 1/8.Water body 4 can adopt fire-fighting and living water use.Water body 4 provides structure restoring force to container 1 lateral pressure, reduces structural amplitude.Cylindrical bluff body 2 is fixed on container 1 one sides, according to by shock-damping structure load actual conditions, determines concrete size and arrangement, thereby controls water body 4 Reynolds numbers, forms Karman vortex street, increases energy consumption, improves damping effect.Rectangular clapboard 5 is fixed on container 1 middle part, increases water body circulation path, increases slosh damping.Fairing 3 is fixed on container 1 opposite side, accelerates water body 4 flowing velocities, increases the reciprocating duration, thereby increases energy consumption.
The above-mentioned description to embodiment is can understand and apply the utility model for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present utility model, and the improvement of making for the utility model and modification all should be within protection domains of the present utility model.
Claims (1)
1. a vortex street type Tuned Liquid, formed by container (1), cylindrical bluff body (2), fairing (3), water body (4) and rectangular clapboard (5), it is characterized in that: in container (1), a side arranges cylindrical bluff body (2), opposite side arranges fairing (3), between cylindrical bluff body (2) and fairing (3), some rectangular clapboards (5) are set, described rectangular clapboard (5) is positioned at container (1) middle part, places water body (4) in container (1); Described container (1) is deep water case, and in container (1), the degree of depth of water body (4) and the lenth ratio of container (1) direction of vibration are greater than 1/8; Described container (1) by fastening devices be connected by vibration-proof structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654762.4U CN203603293U (en) | 2013-10-23 | 2013-10-23 | Vortex street type tuned liquid damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654762.4U CN203603293U (en) | 2013-10-23 | 2013-10-23 | Vortex street type tuned liquid damper |
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| Publication Number | Publication Date |
|---|---|
| CN203603293U true CN203603293U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320654762.4U Expired - Fee Related CN203603293U (en) | 2013-10-23 | 2013-10-23 | Vortex street type tuned liquid damper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297940A (en) * | 2015-11-19 | 2016-02-03 | 同济大学 | Combined multi-phase vibration-reduction device |
| CN109813512A (en) * | 2018-12-19 | 2019-05-28 | 国网江苏省电力有限公司经济技术研究院 | A kind of wave absorber for centrifuge modelling test case |
| CN112922094A (en) * | 2021-01-26 | 2021-06-08 | 青岛国信海天中心建设有限公司 | Tuned liquid damper water tank assembly |
-
2013
- 2013-10-23 CN CN201320654762.4U patent/CN203603293U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297940A (en) * | 2015-11-19 | 2016-02-03 | 同济大学 | Combined multi-phase vibration-reduction device |
| CN105297940B (en) * | 2015-11-19 | 2017-12-08 | 同济大学 | Combined multiphase vibration absorber |
| CN109813512A (en) * | 2018-12-19 | 2019-05-28 | 国网江苏省电力有限公司经济技术研究院 | A kind of wave absorber for centrifuge modelling test case |
| CN109813512B (en) * | 2018-12-19 | 2020-11-20 | 国网江苏省电力有限公司经济技术研究院 | Wave absorbing device for centrifuge model box |
| CN112922094A (en) * | 2021-01-26 | 2021-06-08 | 青岛国信海天中心建设有限公司 | Tuned liquid damper water tank assembly |
| CN112922094B (en) * | 2021-01-26 | 2022-05-31 | 青岛国信海天中心建设有限公司 | Tuned liquid damper water tank assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20161023 |
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| CF01 | Termination of patent right due to non-payment of annual fee |