CN105004383A - Vortex shedding flowmeter with jet bionic type vortex generating body - Google Patents
Vortex shedding flowmeter with jet bionic type vortex generating body Download PDFInfo
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- CN105004383A CN105004383A CN201510489597.5A CN201510489597A CN105004383A CN 105004383 A CN105004383 A CN 105004383A CN 201510489597 A CN201510489597 A CN 201510489597A CN 105004383 A CN105004383 A CN 105004383A
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- vortex
- pipeline
- guide fluid
- drainage body
- type groove
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Abstract
The invention aims to provide a vortex shedding flowmeter with a jet bionic type vortex generating body. The vortex shedding flowmeter includes a flowmeter body and a vortex generating body, wherein the flowmeter body is mounted on a pipeline; the vortex generating body is arranged in the pipeline; the vortex generating body includes a guide fluid body and a triangular prism shaped body; the guide fluid body is of a semi-cylindrical blocky structure with a V-shaped groove; the V-shaped groove is formed in the front end of the guide fluid body; both sides of the V-shaped groove are arc-shaped structures, and the back end of the guide fluid body is a plane structure; through holes are formed in the guide fluid body, and the two end faces of the though holes are respectively positioned on the V-shaped groove and the arc-shaped structures; the V-shaped groove at the front end of the guide fluid body is arranged facing the incoming direction of the fluid in the pipeline; the triangular prism shaped body with a concave surface is arranged at the rear of the guide fluid body, and the concave surface is arranged opposite to the incoming direction of the fluid in the pipeline; a slit is arranged between the triangular prism shaped body and the guide fluid body. The vortex shedding flowmeter provided by the invention can reduce the resistance produced during liquid flow; the vortex signals produced by the vortex shedding flowmeter are stronger than those produced by a single generating body; the signal to noise ratio is high, the pressure loss is small, and the lower limit of the flow amount is low.
Description
Technical field
What the present invention relates to is a kind of flowmeter.
Background technology
Along with industrial expansion, the particularly development of petroleum chemical industry, the application of vortex shedding flow meter is becoming more and more universal, the flow of fluid can accurately be measured, the development of industry is played an important role, as the ingredient that vortex shedding flow meter is important, the accuracy of eddy generator on vortex shedding flow meter has important impact, and in prior art, be not well positioned to meet measurement requirement, show: cylindrical shedder comes off, and comparatively to have the on-circular cross-section shedder of fixedly separated point poor for the strength and stability of vortex, and in different pipelines, impact by flow velocity is larger, triangle cylindricality shedder is excessive by the impact of the design of drift angle, and resistance is larger, trapezoidal shedder shortcoming is that structure is loaded down with trivial details, physical dimension is more, the impact of resistance on flow that shedder produces is larger.
Summary of the invention
A kind of vortex shedding flow meter with jet biomimetic type eddy generator of the problems such as the object of the present invention is to provide that to solve existing vortex shedding flow meter shedder vortex signal weak, the linearity is low, complex structure, and the resistance of convection cell is large, and the flow effect of convection cell is large.
The object of the present invention is achieved like this:
A kind of vortex shedding flow meter with jet biomimetic type eddy generator of the present invention, comprise flowmeter bodies, eddy generator, flowmeter bodies is arranged on pipeline, eddy generator is arranged in pipeline, it is characterized in that: described eddy generator comprises drainage body, triangular prism body, drainage body is the semicylinder block structure having V-type groove, V-type groove opens the front end at drainage body, the both sides of V-type groove are arcuate structure, the rear end of drainage body is planar structure, drainage body arranges through hole, two end faces of through hole lay respectively on V-type groove and arcuate structure, the V-type groove face drawing fluid front end carrys out flow path direction and arranges in pipeline, triangular prism body with concave surface is arranged on the rear of drainage body, concave surface carrys out flow path direction dorsad in pipeline and arranges, between triangular prism body and drainage body, slit is set.
The present invention can also comprise:
1, the diameter d in drainage body semicylinder block structure cross section is 0.25 times of pipe diameter D, the degree of depth of V-type groove is 0.7 times of d, and through-hole diameter is 0.1 times of d, and the width of slit is 0.1 times of d, the width of triangle cylindricality is d, and the outline line angulation on triangle cylindricality both sides is 60 degree.
Advantage of the present invention is: the present invention has biomimetic features, jet flow drag reduction principle when imitative earthworm moves in soil, shedder first half has V-shaped groove and jet orifice, the resistance that when can alleviate liquid flow, shedder produces, the vortex signal produced is stronger than single shedder, signal to noise ratio (S/N ratio) is high, and the pressure loss is little, and flux lower limit is low.
Accompanying drawing explanation
Fig. 1 is the structural representation installing eddy generator in pipeline;
Fig. 2 is the structural representation of eddy generator of the present invention;
Fig. 3 is the skeleton view of eddy generator of the present invention
Fig. 4 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing citing, the present invention is described in more detail:
Composition graphs 1 ~ 4, fluid 1 flows to eddy generator via pipeline 2 by the direction of arrow, fluoran stream surface has V-shaped groove 3, and have evenly distributed conduction hole 4 in V-shaped groove inside, fluid is producing jet in the wings after conduction hole, with the fluid matasomatism outside shedder, change the distribution of shedder surface flow field thus play the resistance reducing shedder convection cell, then through swirl generating body slit 5, the Karman vortex street 7 be alternately separated is produced after in the end flowing through the triangle cylindricality 6 of band concave surface, then measured the flow of fluid according to the frequency of vortex shedding and the relation of rate of flow of fluid by measuring mechanism.
Composition graphs 2 further illustrates the architectural feature of shedder, and first half is half cylindrical structure, and center has V-type groove structure 2, has through hole 1 in inside, and center section is slit 3, and latter half is the triangle cylindricality 4 of band concave surface.
Composition graphs 3 illustrates the structure of flowmeter entirety, and it is anterior that eddy generator 1 is arranged on pipeline 2 internal measurement mechanism 3, and measuring mechanism 3 is arranged on rear side of shedder.Mechanism can reduce the pressure loss of the resistance reduction fluid of shedder convection cell, and the impact of shedder on flow is significantly reduced.
Vortex shedding flow meter eddy generator, its first half is half cylindrical block structure, its diameter d is about 0.25 times of pipe diameter D, V-type groove is had at center position, the degree of depth of V-type groove is 0.7 times of d, the diameter that V-type groove two walls are uniform-distribution with suitable distance by rectangular array is the through hole of 0.1 times of d, quantity and the size in hole change according to the size of shedder, middle with slit, the width of slit is about 0.1 times of first half diameter d, latter half is the triangle cylindricality of band concave surface, its width is d, two sideline angulations are 60 degree.It is characterized in that there is jet biomimetic type structure, utilize jet flow drag reduction technology to alleviate the resistance of shedder convection cell, thus reduce shedder to the impact of fluids within pipes flow.
Claims (2)
1. one kind has the vortex shedding flow meter of jet biomimetic type eddy generator, comprise flowmeter bodies, eddy generator, flowmeter bodies is arranged on pipeline, eddy generator is arranged in pipeline, it is characterized in that: described eddy generator comprises drainage body, triangular prism body, drainage body is the semicylinder block structure having V-type groove, V-type groove opens the front end at drainage body, the both sides of V-type groove are arcuate structure, the rear end of drainage body is planar structure, drainage body arranges through hole, two end faces of through hole lay respectively on V-type groove and arcuate structure, the V-type groove face drawing fluid front end carrys out flow path direction and arranges in pipeline, triangular prism body with concave surface is arranged on the rear of drainage body, concave surface carrys out flow path direction dorsad in pipeline and arranges, between triangular prism body and drainage body, slit is set.
2. a kind of vortex shedding flow meter with jet biomimetic type eddy generator according to claim 1, it is characterized in that: the diameter d in drainage body semicylinder block structure cross section is 0.25 times of pipe diameter D, the degree of depth of V-type groove is 0.7 times of d, through-hole diameter is 0.1 times of d, the width of slit is 0.1 times of d, the width of triangle cylindricality is d, and the outline line angulation on triangle cylindricality both sides is 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510489597.5A CN105004383B (en) | 2015-08-11 | 2015-08-11 | A kind of vortex-shedding meter with jet biomimetic type eddy generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510489597.5A CN105004383B (en) | 2015-08-11 | 2015-08-11 | A kind of vortex-shedding meter with jet biomimetic type eddy generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105004383A true CN105004383A (en) | 2015-10-28 |
| CN105004383B CN105004383B (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510489597.5A Active CN105004383B (en) | 2015-08-11 | 2015-08-11 | A kind of vortex-shedding meter with jet biomimetic type eddy generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680208A (en) * | 2018-05-18 | 2018-10-19 | 金卡智能集团股份有限公司 | A kind of hot type flux of vortex street metering device, flowmeter and its flow-measuring method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55112519A (en) * | 1979-02-23 | 1980-08-30 | Nissan Motor Co Ltd | Karman vortex flow meter |
| JPS5657913A (en) * | 1979-10-17 | 1981-05-20 | Nissan Motor Co Ltd | Flow speed or flow rate measuring device |
| JPS62129720A (en) * | 1985-11-29 | 1987-06-12 | Nippon Denso Co Ltd | Karman's vortex flow meter |
| US4782710A (en) * | 1986-04-30 | 1988-11-08 | Fuji Electric Co., Ltd. | Karman vortex flow meter |
| JPH0450725A (en) * | 1990-06-19 | 1992-02-19 | Tokico Ltd | Vortex flowmeter |
| JPH06174508A (en) * | 1992-12-09 | 1994-06-24 | Fuji Electric Co Ltd | Karman vortex flowmeter |
| JP3463241B2 (en) * | 1999-07-23 | 2003-11-05 | 保 五十嵐 | Vortex flow meter |
| CN102279025A (en) * | 2011-06-30 | 2011-12-14 | 福建上润精密仪器有限公司 | Integrated gas mass flow meter for plug-in sensor integrated component |
| CN102288231A (en) * | 2011-07-27 | 2011-12-21 | 江苏伟屹电子有限公司 | Composite vortex street generating body |
| CN202119480U (en) * | 2011-04-21 | 2012-01-18 | 弓铨企业股份有限公司 | Eddy current sensor |
| CN102353405A (en) * | 2011-07-07 | 2012-02-15 | 石家庄奥森自动化仪表有限公司 | Steady-state circulation body for vortex shedding flowmeter |
| CN204854830U (en) * | 2015-08-11 | 2015-12-09 | 哈尔滨工程大学 | Vortex flowmeter with body takes place for efflux bionic -type swirl |
-
2015
- 2015-08-11 CN CN201510489597.5A patent/CN105004383B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55112519A (en) * | 1979-02-23 | 1980-08-30 | Nissan Motor Co Ltd | Karman vortex flow meter |
| JPS5657913A (en) * | 1979-10-17 | 1981-05-20 | Nissan Motor Co Ltd | Flow speed or flow rate measuring device |
| JPS62129720A (en) * | 1985-11-29 | 1987-06-12 | Nippon Denso Co Ltd | Karman's vortex flow meter |
| US4782710A (en) * | 1986-04-30 | 1988-11-08 | Fuji Electric Co., Ltd. | Karman vortex flow meter |
| JPH0450725A (en) * | 1990-06-19 | 1992-02-19 | Tokico Ltd | Vortex flowmeter |
| JPH06174508A (en) * | 1992-12-09 | 1994-06-24 | Fuji Electric Co Ltd | Karman vortex flowmeter |
| JP3463241B2 (en) * | 1999-07-23 | 2003-11-05 | 保 五十嵐 | Vortex flow meter |
| CN202119480U (en) * | 2011-04-21 | 2012-01-18 | 弓铨企业股份有限公司 | Eddy current sensor |
| CN102279025A (en) * | 2011-06-30 | 2011-12-14 | 福建上润精密仪器有限公司 | Integrated gas mass flow meter for plug-in sensor integrated component |
| CN102353405A (en) * | 2011-07-07 | 2012-02-15 | 石家庄奥森自动化仪表有限公司 | Steady-state circulation body for vortex shedding flowmeter |
| CN102288231A (en) * | 2011-07-27 | 2011-12-21 | 江苏伟屹电子有限公司 | Composite vortex street generating body |
| CN204854830U (en) * | 2015-08-11 | 2015-12-09 | 哈尔滨工程大学 | Vortex flowmeter with body takes place for efflux bionic -type swirl |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680208A (en) * | 2018-05-18 | 2018-10-19 | 金卡智能集团股份有限公司 | A kind of hot type flux of vortex street metering device, flowmeter and its flow-measuring method |
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| Publication number | Publication date |
|---|---|
| CN105004383B (en) | 2017-11-17 |
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