CN204854831U - Body takes place for swirl based on bionical efflux drag reduction principle - Google Patents
Body takes place for swirl based on bionical efflux drag reduction principle Download PDFInfo
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- CN204854831U CN204854831U CN201520601633.8U CN201520601633U CN204854831U CN 204854831 U CN204854831 U CN 204854831U CN 201520601633 U CN201520601633 U CN 201520601633U CN 204854831 U CN204854831 U CN 204854831U
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- type groove
- little
- semicylinder
- halfcylinder
- jet orifice
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Abstract
An object of the utility model is to provide a body takes place for swirl based on bionical efflux drag reduction principle, including setting up the emergence body in the trunk line, it includes halfcylinder and the triangle pole physique of taking the concave surface to take place body, cambered surface one side of halfcylinder is for meeting the stream interface, the cambered surface middle part sets up big V type groove, the both sides in big V type groove set up little V type groove respectively, big V type groove is the same with the opening angle in little V type groove, the opening degree of depth in big V type groove is greater than the opening degree of depth in little V type groove, the triangle pole physique sets up the plane one side at the halfcylinder, the concave surface halfcylinder setting dorsad of triangle pole physique, set up the slit between halfcylinder and the triangle pole physique. The utility model discloses for current swirl the body taking place and have lower frontal resistance, can produce higher swirl occurring frequency, and makes the swirl separation more stable.
Description
Technical field
The utility model relates to a kind of flowmeter, the eddy generator specifically in flowmeter.
Background technology
Swirl generating body is the vitals in vortex shedding flow meter, its Main Function in the flow field of three-dimensional, impels vortex at the axis generation synchronous falling of pipeline and combined the measurement to flow signal with measuring sensor, eddy generator in the market can be divided into cylinder, trapezoidal column, triangular prism, T-shaped post, rectangular column shedder etc. by profile, can be divided into single shedder or two (many) shedder by structure.Mostly there is vortex street intensity and the conflicting feature of fluid resistance in these vortex shedder, requires further improvement, and develops that vortex street intensity is large, vortical signals good stability and the little vortex shedder of resistance.
Summary of the invention
A kind of eddy generator based on bionical jet flow drag reduction principle that the purpose of this utility model is to provide the resistance that produces measured fluid less.
The purpose of this utility model is achieved in that
A kind of eddy generator based on bionical jet flow drag reduction principle of the utility model, it is characterized in that: comprise the shedder body be arranged in main pipeline, shedder body comprises the triangular prism body of semicylinder and band concave surface, the cambered surface side of semicylinder is fluoran stream surface, large V-type groove is set in the middle part of cambered surface, the both sides of large V-type groove arrange little V-type groove respectively, large V-type groove is identical with the opening angle of little V-type groove, the opening degree of depth of large V-type groove is greater than the opening degree of depth of little V-type groove, triangular prism body is arranged on the plane side of semicylinder, the concave surface semicylinder setting dorsad of triangular prism body, between semicylinder and triangular prism body, slit is set.
The utility model can also comprise:
1, offer first kind jet orifice between V-type groove and little V-type groove greatly, between adjacent little V-type groove and little V-type groove, offer Equations of The Second Kind jet orifice, between the little V-type groove that the plane of semicylinder is adjacent, offer the 3rd class jet orifice.
2, the area of first kind jet orifice entrance is greater than the area of Equations of The Second Kind jet orifice and the 3rd class jet orifice entrance.
Advantage of the present utility model is: the utility model has lower head resistance relative to existing eddy generator, can produce higher vortex occurrence frequency, and it is more stable that whirlpool is separated.
Accompanying drawing explanation
Fig. 1 is front schematic view of the present utility model;
Fig. 2 is side schematic view of the present utility model;
Fig. 3 is the structural representation that the utility model works in runner.
Embodiment
Below in conjunction with accompanying drawing citing, the utility model is described in more detail:
Composition graphs 1 ~ 3, vortex shedder, shedder is made up of jointly the triangle column type of semi-cylindrical and band concave surface, both sides on semicolumn have multiple little V-type groove, the quantity of little V-type groove can change according to the difference of concrete size, and having a large groove in the middle of the semicolumn in order to increase jet orifice, the size and number of jet orifice can do concrete adjustment according to the size of shedder.When fluid enters large V-type groove, fluid enters jet orifice from large V-type groove face, and flows out from little V-type groove face.Be the triangle column type of band concave surface below, semicolumn and triangle cylindricality Intermediate Gray have slit.
Fluid enters jet orifice, reduces the resistance of vortex shedder convection cell, and when fluid penetrates from jet orifice, flow velocity is accelerated, and the fluid acting in conjunction with flowing through from cylinder edge, excites the formation of vortex street, thus the intensity of vortex street is strengthened.
In Fig. 3, fluid flows into sprue by the direction of arrow, through swirl generating body, part fluid is subject to the drag effect of semicylinder, from main body side to flowing through, according to non-smooth surface drag principle, little V-type groove can play the part drag reduction effect to eddy generator, another part fluid enters large V-type groove, the jet orifice had from large V-type groove passes through, reduce fluid resistance on the one hand, simultaneously, two fluids is polymerized at semicolumn afterbody, guiding function is played in the formation of the high-speed liquid flowed out from jet orifice to vortex street, vortex street intensity is strengthened, it is better that vortex street stability also becomes.The structural design of above vortex shedder, reduces the resistance of flowmeter convection cell on the one hand, on the other hand the measuring accuracy of flowmeter and measurement range is improved.
Claims (3)
1. the eddy generator based on bionical jet flow drag reduction principle, it is characterized in that: comprise the shedder body be arranged in main pipeline, shedder body comprises the triangular prism body of semicylinder and band concave surface, the cambered surface side of semicylinder is fluoran stream surface, large V-type groove is set in the middle part of cambered surface, the both sides of large V-type groove arrange little V-type groove respectively, large V-type groove is identical with the opening angle of little V-type groove, the opening degree of depth of large V-type groove is greater than the opening degree of depth of little V-type groove, triangular prism body is arranged on the plane side of semicylinder, the concave surface semicylinder setting dorsad of triangular prism body, between semicylinder and triangular prism body, slit is set.
2. a kind of eddy generator based on bionical jet flow drag reduction principle according to claim 1, it is characterized in that: offer first kind jet orifice between V-type groove and little V-type groove greatly, offer Equations of The Second Kind jet orifice between adjacent little V-type groove and little V-type groove, between the little V-type groove that the plane of semicylinder is adjacent, offer the 3rd class jet orifice.
3. a kind of eddy generator based on bionical jet flow drag reduction principle according to claim 2, is characterized in that: the area of first kind jet orifice entrance is greater than the area of Equations of The Second Kind jet orifice and the 3rd class jet orifice entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520601633.8U CN204854831U (en) | 2015-08-11 | 2015-08-11 | Body takes place for swirl based on bionical efflux drag reduction principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520601633.8U CN204854831U (en) | 2015-08-11 | 2015-08-11 | Body takes place for swirl based on bionical efflux drag reduction principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204854831U true CN204854831U (en) | 2015-12-09 |
Family
ID=54745371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520601633.8U Withdrawn - After Issue CN204854831U (en) | 2015-08-11 | 2015-08-11 | Body takes place for swirl based on bionical efflux drag reduction principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204854831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004384A (en) * | 2015-08-11 | 2015-10-28 | 哈尔滨工程大学 | Vortex generating body based on bionic jet resistance-reducing principle |
-
2015
- 2015-08-11 CN CN201520601633.8U patent/CN204854831U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004384A (en) * | 2015-08-11 | 2015-10-28 | 哈尔滨工程大学 | Vortex generating body based on bionic jet resistance-reducing principle |
| CN105004384B (en) * | 2015-08-11 | 2017-11-21 | 哈尔滨工程大学 | A kind of eddy generator based on bionical jet flow drag reduction principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151209 Effective date of abandoning: 20171121 |
|
| AV01 | Patent right actively abandoned |