CN204664063U - Flow guide structure - Google Patents
Flow guide structure Download PDFInfo
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- CN204664063U CN204664063U CN201520240519.7U CN201520240519U CN204664063U CN 204664063 U CN204664063 U CN 204664063U CN 201520240519 U CN201520240519 U CN 201520240519U CN 204664063 U CN204664063 U CN 204664063U
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- stream
- section
- cross
- configuration
- flow path
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- 238000012423 maintenance Methods 0.000 claims abstract description 3
- 238000013016 damping Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 7
- FWQHNLCNFPYBCA-UHFFFAOYSA-N fluoran Chemical compound C12=CC=CC=C2OC2=CC=CC=C2C11OC(=O)C2=CC=CC=C21 FWQHNLCNFPYBCA-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a kind of flow guide structure that can reduce resistance to water-flow and vortex-induced vibration, belongs to submerged structure design field.Flow guide structure comprise meet stream end, stream cross section, configuration afterbody, it is characterized in that, meet stream end and adopt semi-circular design, stream cross section to be greater than along the length carrying out flow path direction and to stream the height that cross section orthogonal carrys out flow path direction, and stream the height maintenance fixed proportion that the length opposing connection flow section down-flowing incoming direction of flow path direction is come on edge, cross section, afterbody configuration adopts semi-circular configuration.Adopt the utility model can realize drag reduction, the vibration damping target of submerged structure, minimal reduction environmental factor on the impact of structure, thus ensures the operation work that submerged structure can be efficient, stable.
Description
Technical field:
The utility model relates to a kind ofly effectively can get rid of the flow guide structure of underwater complex environment to arrangement works performance impact, belongs to submerged structure field.Vortex-induced vibration and flow-disturbing resistance are considered when designing by this flow guide structure simultaneously, achieve and reduce vortex-induced vibration to the interference of structure, reduce structure suffered resistance under water, ensure arrangement works performance.
Background technique:
When fluid walks around submerged structure, streaming resistance except producing, also can, with periodic vortex shedding, make submerged structure produce periodic horizontal force and transverse force, producing vortex-induced vibration.In order to reduce the submerged structure dynamic response amplitude that flow field vortex-induced vibration causes, in engineering, adopt the method for multiple suppression vortex-induced vibration at present.Applying maximum is install disturbing flow device, and its basic principle is by Flow Field around change structure, thus effectively suppresses the formation of whirlpool and come off.Flow spoiler is equipped with the various ways such as rat, covering.Adopt the turbulence structure as appeal really effectively can reduce vortex-induced vibration, but reduce while whirlpool swashs impact, can bring to structure and larger stream resistance, cause submerged structure to invest and strengthen, operation cost uprises.
The purpose of this utility model is to propose one more reasonably submerged structure design, while reducing vortex-induced vibration impact, drops to minimum by streaming the impact that resistance brings.
Model utility content:
The purpose of this utility model is to propose a kind of flow guide structure that structure can be made in complicated underwater environment to fall resistance vibration damping, when structure adopts the utility model, can play as other flow spoilers and reduce the sharp impact in whirlpool, avoid the additional drag that flow spoiler brings simultaneously, and have the advantages that manufacture simply, do not need secondary installing.
The utility model solves the scheme that its technical problem adopts:
This flow guide structure comprises meets stream end, streams cross section, configuration afterbody, configuration surface, wherein, meets stream end and adopts semi-circular design, avoid empty direct sum sharp comer fluoran stream surface, effectively reduce fluoran stream surface resistance; Cross section length to height ratio is streamed in flow guide structure increase, extends boundary layer attachment length, thus slows down vortes interference; Configuration afterbody adopts mild semi-circular design equally, and Delay boundary conditions layer is separated, and reduces and streams resistance; Flow guide structure increases configuration surface roughness, can reduce and stream wake zone, reach resistance reducing effect.
Beneficial effect:
Adopt the utility model can bring the effect of falling resistance vibration damping for submerged structure, thus there is minimizing investment, raising structure function stability and the benefit such as working efficiency, minimizing amount of maintenance.
Accompanying drawing illustrates:
Fig. 1 is that the utility model is always schemed.
In figure: 1-meets stream end, and 2-streams cross section, 3-configuration afterbody, 4-configuration surface.
Embodiment:
1. meet stream end and adopt semi-circular design.Meet in stream end configuration numerous, semi-circular configuration is as shown in (1) in Fig. 1, and it is best to fall resistance ability, it avoid to stream fluid and be directly separated from angle point.
2. stream cross section to stream depth of section (down-flowing incoming direction length) along the length ratio carrying out flow path direction and enlarge markedly, as shown in (2) in Fig. 1, and keep fixed proportion.When incoming flow flows through structure, fluid can be attached to body structure surface, can produce pressure difference when fluid stripper surface, thus forms whirlpool.Because configuration is abundant along carrying out flow path direction length, the generation of said process can be delayed, directly reducing whirlpool to the impact of structure.
3. configuration afterbody is as shown in (3) in Fig. 1, adopts semi-circular configuration equally, and principle adopts semi-circular configuration identical with meeting to flow to hold.
4. configuration surface adopts specific roughness as shown in (4) in Fig. 1, makes to stream fluid and shifts to an earlier date turbulization, thus reduction structure streams resistance.The selection of roughness needs to decide according to structure fluoran stream surface height, rate of flow of fluid and fluid density.
Claims (1)
1. a flow guide structure, comprise meet stream end, stream cross section, configuration afterbody, it is characterized in that, meet stream end and adopt semi-circular design, stream cross section to be greater than along the length carrying out flow path direction and to stream the height that cross section orthogonal carrys out flow path direction, and stream the height maintenance fixed proportion that the length opposing connection flow section down-flowing incoming direction of flow path direction is come on edge, cross section, afterbody configuration adopts semi-circular configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520240519.7U CN204664063U (en) | 2015-04-21 | 2015-04-21 | Flow guide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520240519.7U CN204664063U (en) | 2015-04-21 | 2015-04-21 | Flow guide structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204664063U true CN204664063U (en) | 2015-09-23 |
Family
ID=54134450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520240519.7U Expired - Fee Related CN204664063U (en) | 2015-04-21 | 2015-04-21 | Flow guide structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204664063U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107909900A (en) * | 2017-12-27 | 2018-04-13 | 清华大学 | A kind of oil stream line display device with current stabilization guiding subassembly |
| CN107940092A (en) * | 2017-12-18 | 2018-04-20 | 珠海格力电器股份有限公司 | Gas flow adjusting means, ducting assembly and air conditioner |
-
2015
- 2015-04-21 CN CN201520240519.7U patent/CN204664063U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940092A (en) * | 2017-12-18 | 2018-04-20 | 珠海格力电器股份有限公司 | Gas flow adjusting means, ducting assembly and air conditioner |
| CN107940092B (en) * | 2017-12-18 | 2024-05-14 | 珠海格力电器股份有限公司 | Air flow adjusting device, air duct assembly and air conditioner |
| CN107909900A (en) * | 2017-12-27 | 2018-04-13 | 清华大学 | A kind of oil stream line display device with current stabilization guiding subassembly |
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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: 20150923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |