CN105021234B - A kind of biomimetic type magnetic vortex street flowmeter for reinforcing ability with vortex street - Google Patents
A kind of biomimetic type magnetic vortex street flowmeter for reinforcing ability with vortex street Download PDFInfo
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- CN105021234B CN105021234B CN201510489598.XA CN201510489598A CN105021234B CN 105021234 B CN105021234 B CN 105021234B CN 201510489598 A CN201510489598 A CN 201510489598A CN 105021234 B CN105021234 B CN 105021234B
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Abstract
The purpose of the present invention is to provide a kind of biomimetic type magnetic vortex street flowmeters for reinforcing ability with vortex street, including sprue, eddy generator, electrode, upper magnet, lower magnet, eddy generator is arranged in sprue, the fixed hollow cylindrical cavity in the top of sprue, the top of cylindrical cavity is installed by signal processing converter, electrode and upper magnet are disposed in cylindrical cavity, electrode handles converter by conducting wire connection signal, upper magnet lower end passes through sprue wall and enters in sprue, lower magnet is fixed with below sprue, sprue import is arranged in eddy generator and upper magnet protrudes between the part in sprue.The present invention can greatly reduce the resistance to water flow, by jet hole and outflow fluid in right side with the fluid that comes with groove side surface current in parastate, fluid flow rate can be reinforced significantly.The groove of side is more favorable to falling off for vortex street, therefore the eddy generator can reinforce the intensity of whirlpool.
Description
Technical field
The present invention relates to a kind of flowmeters.
Background technique
Major part vortex-shedding meter all uses piezoelectric transducer at present, interferes vulnerable to external vibration, influences measurement accuracy,
Magnetic vortex street flowmeter utilizes electromagnetic induction principle, the disadvantage that vortex-shedding meter anti-interference ability can be overcome weak.In petroleum
In water filling field, usually require that flowmeter will have lesser volume, wider measurement range, and want higher anti-pressure ability,
And current magnetic vortex street flowmeter volume on the market is all larger, sealing is difficult, requires further improvement.
Summary of the invention
The purpose of the present invention is to provide solve existing vortex shedder to be also easy to produce horseshoe type whirlpool and vortex frequency, intensity
A kind of biomimetic type magnetic vortex street flowmeter for reinforcing ability with vortex street of the problems such as low.
The object of the present invention is achieved like this:
A kind of biomimetic type magnetic vortex street flowmeter for reinforcing ability with vortex street of the present invention, it is characterized in that: including mainstream
Road, eddy generator, electrode, upper magnet, lower magnet, eddy generator are arranged in sprue, in the top fixation of sprue
Empty cylindrical cavity, the top of cylindrical cavity install signal processing converter, are disposed with electrode and upper magnet, electrode in cylindrical cavity
Converter is handled by conducting wire connection signal, upper magnet lower end passes through sprue wall and enters in sprue, the lower section of sprue
It is fixed with lower magnet, sprue import is arranged in eddy generator and upper magnet protrudes between the part in sprue.
The present invention may also include:
1, the eddy generator be on the basis of tetragonal body vortex shedder, its front end be provided with fish-tail,
It is respectively provided with a concave surface, behind end circular groove in its two sides, the cross section of the concave surface is 1.5 sinusoidal waves
Jet hole is arranged in eddy generator in shape, and the both ends of jet hole are located on fish-tail and circular groove, and jet hole
It is parallel with the tangential direction of dextrorotation wave-like trough.
2, the fish tail slot part of eddy generator is towards direction of flow in sprue.
Present invention has an advantage that bionical vortex shedder fluoran stream surface of the invention is provided with fish-tail, there is jet hole in slot,
Can greatly reduce the resistance to water flow, at the same by jet hole and outflow fluid right side with groove side surface current
The fluid to come over is in parastate, can reinforce fluid flow rate significantly.At the same time, the groove of side is more favorable to vortex street
Fall off, therefore the eddy generator can reinforce the intensity of whirlpool, Strouhal number with higher.Sr value is higher, then
Indicate that the frequency of Vortex Shedding is higher, i.e., from generation in the unit time when the width for measuring velocity in pipes and generating body is fixed
The vortex to fall off on body is more, for generating body of different shapes, when the fluoran stream surface width of pipe diameter and generating body is fixed
When, higher Sr value means that the swirl generating body can isolate more vortexs when flow is identical, which can be effective
Reduce the flux lower limit that vortex-shedding meter can measure.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the cross-sectional view of eddy generator of the present invention；
Fig. 3 is the perspective view of eddy generator of the present invention；
Fig. 4 is schematic of fluid flow in sprue.
Specific embodiment
It illustrates with reference to the accompanying drawing and the present invention is described in more detail:
In conjunction with Fig. 1~4, fluid flows into the odd-shaped cross section sprue 10 with gradual change by arrow direction in Fig. 1, sends out into vortex
7 left side of raw body, as shown in Fig. 2, fluid a part enters in fish-tail, the right side of the generating body is entered via the jet hole in slot
End, can reduce generating body to the resistance of fluid, another part comes generating body right end via generating body wave shape, with warp
The fluid that jet hole comes out is parallel to each other, and plays the role of enhancing fluid flow rate, and generate in the concave surface of the right end of the generating body
Alternately isolated Karman vortex street, while the left and right groove of the generating body also contributes to falling off for whirlpool.Vortex street column are flowed through by upper magnetic
When the magnetic field that iron 6 and lower magnet 8 generate, generates electromotive force and picked up by electrode 5 and handle converter via 2 entering signal of conducting wire
1.Lower magnet 8 is fixed by screw thread and mainstream 10 by gland 9.About 5 electrode is respectively provided with insulation sleeve 12,11, and passes through upper magnetic
The hole of iron 6 enters sprue 10, and electrode upper is fixed by locking nut 4, and 3 outer ring of nut cap, which is provided with, is threaded through screw thread and nut 4
It is fixed, insulation sleeve 13 is housed inside nut cap 3, conducting wire 2 and electrode 5 are linked together by nut cap 3 and insulation sleeve 13.
Bionical vortex shedder of the invention opens a fish tail on the basis of tetragonal body vortex shedder, in fluoran stream surface
Slot, slot is interior, and there are four the jet hole that diameter is 5~φ of φ 10mm, the jet hole direction and the waves that body side surface outflow end occurs
Tangential direction be parallel to each other, on the left and right groove face of symmetrical distribution notch.The tail shape of fish is imitated again simultaneously in the generation
A concave surface has respectively been opened in body two sides, at 1.5 wavy line shapes.R60~R100mm circle has been opened behind the generating body
Arc groove.Jet hole can greatly reduce the resistance to water flow, at the same by jet hole and outflow fluid in right end
Face, in parastate, can reinforce fluid flow rate with the fluid to come with groove side surface current significantly.At the same time, side is recessed
Slot is more favorable to falling off for vortex street.Therefore the imitative fish tail type vortex shedder compared with commensurateiy wide cylindrical tube have it is bigger this
Te Laohaer number can produce higher vortex street frequency in the case where commensurateiy wide and flow velocity, detectable flow can be improved
Lower limit.
Bionical vortex shedder fluoran stream surface of the invention is provided with fish-tail, has jet hole in slot, can greatly reduce pair
The resistance of water flow, at the same by jet hole and the fluid of outflow in right side is in parallel with the fluid that comes with groove side surface current
State can reinforce fluid flow rate significantly.At the same time, the groove of side is more favorable to falling off for vortex street, therefore the whirlpool
Whirlpool generating body can reinforce the intensity of whirlpool, Strouhal number with higher.Sr value is higher, then it represents that when flowing in measurement pipe
When the width of speed and generating body is fixed, the frequency of Vortex Shedding is higher, i.e., the vortex to fall off from generating body in the unit time is got over
It is more, for generating body of different shapes, when pipe diameter and the fixed fluoran stream surface width of generating body, higher Sr value meaning
Flow it is identical when the swirl generating body can isolate more vortexs, which can effectively reduce vortex-shedding meter can
The flux lower limit of measurement.
Claims (2)
1. a kind of biomimetic type magnetic vortex street flowmeter for reinforcing ability with vortex street, it is characterized in that: including sprue, whirlpool hair
Raw body, electrode, upper magnet, lower magnet, eddy generator are arranged in sprue, the fixed hollow cylinder in the top of sprue
Chamber, the top of cylindrical cavity install signal processing converter, are disposed with electrode and upper magnet in cylindrical cavity, electrode passes through conducting wire
Connection signal handles converter, and upper magnet lower end passes through sprue wall and enters in sprue, is fixed with down below sprue
Magnet, sprue import is arranged in eddy generator and upper magnet protrudes between the part in sprue；
The eddy generator be on the basis of tetragonal body vortex shedder, its front end be provided with fish-tail, its two
Side is respectively provided with a concave surface, behind end circular groove, and the cross section of the concave surface is 1.5 sinusoidal undulations shapes,
Jet hole is set in eddy generator, the both ends of jet hole are located on fish-tail and circular groove, and jet hole with just
The tangential direction for revolving wave-like trough is parallel.
2. a kind of biomimetic type magnetic vortex street flowmeter for reinforcing ability with vortex street according to claim 1, feature
Be: the fish tail slot part of eddy generator is towards direction of flow in sprue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510489598.XA CN105021234B (en) | 2015-08-11 | 2015-08-11 | A kind of biomimetic type magnetic vortex street flowmeter for reinforcing ability with vortex street |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510489598.XA CN105021234B (en) | 2015-08-11 | 2015-08-11 | A kind of biomimetic type magnetic vortex street flowmeter for reinforcing ability with vortex street |
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| Publication Number | Publication Date |
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| CN105021234A CN105021234A (en) | 2015-11-04 |
| CN105021234B true CN105021234B (en) | 2018-12-07 |
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| CN201510489598.XA Active CN105021234B (en) | 2015-08-11 | 2015-08-11 | A kind of biomimetic type magnetic vortex street flowmeter for reinforcing ability with vortex street |
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| CN113029321B (en) * | 2021-02-26 | 2023-08-04 | 中国兵器工业集团第二一四研究所苏州研发中心 | Capacitive MEMS vector acoustic wave sensor capable of inhibiting vibration interference and processing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201081738Y (en) * | 2007-07-19 | 2008-07-02 | 上海星空自动化仪表有限公司 | Vortex shedding flow meter |
| CN103913197A (en) * | 2014-03-19 | 2014-07-09 | 哈尔滨工程大学 | Deformed-section electromagnetic vortex-shedding flowmeter with bionic features |
| CN204388928U (en) * | 2015-02-04 | 2015-06-10 | 三正集团股份有限公司 | A kind of eddy generator improving vortex shedding flow meter result of use |
| CN204831398U (en) * | 2015-08-11 | 2015-12-02 | 哈尔滨工程大学 | Bionic -type electromagnetic type vortex flowmeter with ability is strengthened to vortex street |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3113946B2 (en) * | 1991-12-20 | 2000-12-04 | トキコ株式会社 | Vortex flow meter |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201081738Y (en) * | 2007-07-19 | 2008-07-02 | 上海星空自动化仪表有限公司 | Vortex shedding flow meter |
| CN103913197A (en) * | 2014-03-19 | 2014-07-09 | 哈尔滨工程大学 | Deformed-section electromagnetic vortex-shedding flowmeter with bionic features |
| CN204388928U (en) * | 2015-02-04 | 2015-06-10 | 三正集团股份有限公司 | A kind of eddy generator improving vortex shedding flow meter result of use |
| CN204831398U (en) * | 2015-08-11 | 2015-12-02 | 哈尔滨工程大学 | Bionic -type electromagnetic type vortex flowmeter with ability is strengthened to vortex street |
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| CN105021234A (en) | 2015-11-04 |
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