CN105973317A - Bidirectional metering vortex shedding flowmeter - Google Patents
Bidirectional metering vortex shedding flowmeter Download PDFInfo
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- CN105973317A CN105973317A CN201610173809.3A CN201610173809A CN105973317A CN 105973317 A CN105973317 A CN 105973317A CN 201610173809 A CN201610173809 A CN 201610173809A CN 105973317 A CN105973317 A CN 105973317A
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- flow
- flow transducer
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- pipe table
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a bidirectional metering vortex shedding flowmeter, comprising a measuring tube meter body, a vortex generation body, a flow sensor A, a flow sensor B, and a flow integrating instrument. The vortex generation body is installed on the middle part of the inner cavity of the measuring tube meter body. The radial direction of the upper side surface of the measuring tube meter body is provided with two holes. The flow sensor A and the flow sensor B extend into the measuring tube meter body through the holes. The probes of the flow sensor A and the flow sensor B extend out and are respectively on the front side and the rear side of the vortex generation body. The outer side of the measuring tube meter body is fixedly provided with a supporting cylinder. The supporting cylinder covers the flow sensor A and the flow sensor B. The flow integrating instrument is installed on the top end of the supporting cylinder. The flow sensor A and the flow sensor B are connected with the flow integrating instrument. The bidirectional metering vortex shedding flowmeter is simple in structure, low in cost, realizes a one-meter bidirectional metering function, and product shock resistance is further improved.
Description
Technical field
The present invention relates to flow measurement technology field, particularly relate to the vortex-shedding meter of a kind of bidirectional measuring.
Background technology
Vortex-shedding meter technology is since 20 century 70 inventions, because it has, to be suitable to metered media can be gas, the popularity Biodiversity Characteristics such as liquid or steam, therefore a kind of Complete set of instrument in flow measurement field is had become as, there is the vortex-shedding meter of seriation in current domestic and international well-known effusion meter manufacturer, but the most only possess unidirectional metering performance, the vortex-shedding meter of energy bidirectional measuring still belongs to blank, and market is for wanting the occasion of bidirectional measuring, such as scientific research institutions' laboratory, industrial process stream in controlling more uses same pipeline medium and long distance to be installed separately two vortex-shedding meters, realize the measuring requirement of both forward and reverse directions respectively, this method i.e. adds cost and space, too increase installation difficulty.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that the vortex-shedding meter of the reliable bidirectional measuring of a kind of economy.
The present invention is achieved by the following technical solutions:
The vortex-shedding meter of a kind of bidirectional measuring, includes measurement pipe table body, swirl generating body, flow transducer A, flow transducer B and flow integrator, and described swirl generating body is arranged on the middle part measuring pipe table intracoelomic cavity；Radially two through holes are had at the upper side measuring pipe table body, flow transducer A and flow transducer B is extend in measurement pipe table body by through hole, flow transducer A and flow transducer B probe stretches out and lays respectively at side before and after eddy generator, it is fixed with support barrel mast measuring the external side of pipe table, described support barrel mast covers flow transducer A and flow transducer B, flow integrator is arranged on the top supporting barrel mast, and described flow transducer A and flow transducer B is all connected with flow integrator.
The cross sectional shape of described eddy generator is symmetrical rhombus.
Two the relative angles meeting stream at the rhombus interface of described eddy generator are sharp comer, and symmetrical；Another diagonal angle is obtuse angle chamfering, and according to the big small-bore increase of effusion meter, the width of chamfering back plane is between 1-5m, and width dimensions increases with the increase of bore；The size of described swirl generating body fluoran stream surface width is measure pipe table body internal diameter size 0.26-0.28 times.
Flow transducer A is identical with the model of flowmeter sensor B, and is symmetrically arranged on side before and after eddy generator；And two sensor compensation sensors each other.
Described measurement pipe table body have employed flange-type structure, and swirl generating body is welded on table intracoelomic cavity stage casing, or uses casting integrated type structure together with measuring pipe table body, this simple in construction, good manufacturability, either welding or one piece casting, the cost of material is low, and is easy to processing；Measuring equipped with two flow transducers, support barrel mast and flow accumulation display unit outside pipe, complete machine parts are few, and simple in construction is easy for installation.
Wherein, swirl generating body is the cylindricality generation body of diamond-shaped cross-section, the positive and negative fluoran stream surface symmetrical shape of swirl generating body is identical, solve the generation problem of the fluid whirl signal of both forward and reverse directions, and ensure that effusion meter has identical instrument k-factor when forward and reverse metering, namely the actual instrument k-factor of this effusion meter still has uniqueness.
Vortex flow sensors A is identical with Type B number for said two, achieve versatility and the interchangeability of flow transducer, so standardization level of the product of design is high, said two sensor is respectively symmetrically and is installed on two surveys before and after swirl generating body, sensor probe stretches out the both sides abutting against vortex sounding body, the signal of the sensor senses of this position is strong, improves effusion meter and can survey the performance of low discharge.
The function that said two vortex flow sensors compensates each other, i.e. when forward is measured, sensors A is measuring flow signal as master reference, now sensor B only measures pipe vibration and other interference signals as aiding sensors, this interference signal after operational amplifier reverse coupled with the Signal averaging of master reference to eliminate vibration and the interference signal interference to flow signal, the two-flow sensor construction scheme compensated the most each other also can realize this effusion meter and have higher anti-vibration jamming performance, improve the performance surveying low discharge, widen range up to more than 15:1.
The invention have the advantage that present configuration is simple, low cost, it is achieved a table bidirectional measuring function, product anti-seismic performance improves the most further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the cross-sectional view of eddy generator.
Detailed description of the invention
As it is shown in figure 1, the vortex-shedding meter of a kind of bidirectional measuring, including measurement pipe table body 1 swirl generating body 2, flow transducer A3, flow transducer B6 and flow integrator 5, described swirl generating body 2 is arranged on the middle part measuring pipe table body 1 inner chamber；Radially two through holes are had at the upper side measuring pipe table body 1, flow transducer A3 and flow transducer B4 is extend in measurement pipe table body 1 by through hole, flow transducer A3 and flow transducer B6 probe stretches out and lays respectively at side before and after eddy generator 2, support barrel mast 4 it is fixed with outside pipe table body 1 measuring, described support barrel mast 4 covers flow transducer A3 and flow transducer B6, flow integrator 5 is arranged on the top supporting barrel mast 4, and described flow transducer A3 and flow transducer B6 is all connected with flow integrator 5.
The cross sectional shape of described eddy generator 2 is symmetrical rhombus.
As in figure 2 it is shown, two the relative angles meeting stream at the rhombus interface of described eddy generator 2 are sharp comer, and symmetrical；Another diagonal angle is obtuse angle chamfering, and according to the big small-bore increase of effusion meter, the width a of chamfering back plane is between 1-5m, and width dimensions increases with the increase of bore；Size b of described swirl generating body 2 fluoran stream surface width is measure pipe table body internal diameter size 0.26-0.28 times.
Flow transducer A3 is identical with the model of flowmeter sensor B6, and is symmetrically arranged on side before and after eddy generator 2；And two sensor compensation sensors each other.
Described measurement pipe table body 1 have employed flange-type structure, and swirl generating body 2 is welded on table intracoelomic cavity stage casing, or uses casting integrated type structure together with measuring pipe table body 1, this simple in construction, good manufacturability, either welding or one piece casting, the cost of material is low, and is easy to processing；Measuring equipped with two flow transducers, support barrel mast and flow accumulation display unit outside pipe, complete machine parts are few, and simple in construction is easy for installation.
Operation principle: when fluid media (medium) forward flows through eddy generator 2, the two row vortex street pulsation eddy-currents in the separation occurring the both sides of body to replace, it is arranged on the vortex street sensor A3 just sensing of upstream of eddy generator less than the pulsating force of vortex street swirling fluid, and the vortex street sensor B6 being arranged on the downstream of eddy generator just senses the pulsating force of vortex street swirling fluid, and this pulsating force is converted into alternation charge signal through the piezoelectric element that sensor internal encapsulates is transferred to flow integrator and carries out signal processing, owing to frequency and the flow flow through of charge signal of this alternation or flow velocity are based on good linear relationship, thus the flow velocity of fluid is accurately calculated by integrating instrument；Vortex street sensor A 3 and vortex street sensor B 6 is owing to being the piezoelectric transducer principle used simultaneously, the sensitivity of sensor is the highest, the energy of the interference sources such as pipe vibration can be measured equally and export corresponding interference Signal averaging on measured flow signal, owing to the model specification of two sensors is identical, installation site is symmetrical, therefore sense and export the amplitude of the interference signal component such as pipe vibration equal in magnitude, phase place is identical, after differential amplifier circuit processes, vibrations interference signal is filtered out, residue useful signal send rear class single-chip microcomputer to be further processed.Single-chip microcomputer by relative analysis useful signal and other two-way sensor signals collected, can tell the flow direction of current fluid simultaneously.
When fluid media (medium) reverse flow, due to the upper full symmetric property principle of structure design of the bidirectional measuring vortex-shedding meter of the present invention, measuring principle is vice versa.
In sum, the bidirectional measuring vortex-shedding meter of the present embodiment, the bidirectional traffics metering of vortex-shedding meter convection cell can be realized and flow to identify function, wherein the Cross section Design of eddy generator is symmetrical diamond structure shape and the uniqueness of diamond-shaped cross-section size a, it is ensured that have same instrument k-factor when both direction is measured；Have employed the piezoelectric type vortex street sensor of two same model in addition to there is flow signal when each sensing and transmit both forward and reverse directions respectively, compensate sensor the most each other, the vibration of vortex-shedding meter anti-Management of Pipeline Mechanical Equipment and abilities of other dynamo-electric interference signals can be improved.
Particular embodiments described above; the purpose of the present invention, technical scheme and effect are further described; it should be understood that; this embodiment is merely to illustrate the present invention rather than limits the scope of the invention; all within the spirit and principles in the present invention; the various amendments made, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (5)
1. the vortex-shedding meter of a bidirectional measuring, it is characterised in that: including measurement pipe table body, swirl generating body, flow transducer A, flow transducer B and flow integrator, described swirl generating body is arranged on the middle part measuring pipe table intracoelomic cavity；Radially two through holes are had at the upper side measuring pipe table body, flow transducer A and flow transducer B is extend in measurement pipe table body by through hole, flow transducer A and flow transducer B probe stretches out and lays respectively at side before and after eddy generator, it is fixed with support barrel mast measuring the external side of pipe table, described support barrel mast covers flow transducer A and flow transducer B, flow integrator is arranged on the top supporting barrel mast, and described flow transducer A and flow transducer B is all connected with flow integrator.
The vortex-shedding meter of a kind of bidirectional measuring the most according to claim 1, it is characterised in that: the cross sectional shape of described eddy generator is symmetrical rhombus.
The vortex-shedding meter of a kind of bidirectional measuring the most according to claim 2, it is characterised in that: two the relative angles meeting stream at the rhombus interface of described eddy generator are sharp comer, and symmetrical；Another diagonal angle is obtuse angle chamfering, and according to the big small-bore increase of effusion meter, the width of chamfering back plane is between 1-5m, and width dimensions increases with the increase of bore；The size of described swirl generating body fluoran stream surface width is measure pipe table body internal diameter size 0.26-0.28 times.
The vortex-shedding meter of a kind of bidirectional measuring the most according to claim 2, it is characterised in that: flow transducer A is identical with the model of flowmeter sensor B, and is symmetrically arranged on side before and after eddy generator；And two sensor compensation sensors each other.
5. according to the vortex-shedding meter of a kind of bidirectional measuring described in any one of claim 1-4, it is characterized in that: described measurement pipe table body have employed flange-type structure, swirl generating body is welded on table intracoelomic cavity stage casing, or uses casting integrated type structure together with measuring pipe table body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610173809.3A CN105973317A (en) | 2016-03-23 | 2016-03-23 | Bidirectional metering vortex shedding flowmeter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610173809.3A CN105973317A (en) | 2016-03-23 | 2016-03-23 | Bidirectional metering vortex shedding flowmeter |
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| CN105973317A true CN105973317A (en) | 2016-09-28 |
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| CN201610173809.3A Pending CN105973317A (en) | 2016-03-23 | 2016-03-23 | Bidirectional metering vortex shedding flowmeter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806912A (en) * | 2017-12-13 | 2018-03-16 | 南京亿准纳自动化控制技术有限公司 | Bidirectional traffics measurement apparatus |
| CN109282862A (en) * | 2018-10-22 | 2019-01-29 | 山东科尔自动化仪表股份有限公司 | A kind of double vortex street sensor fluid measurement instruments of shock type and measurement method |
| CN109282863A (en) * | 2018-10-22 | 2019-01-29 | 山东科尔自动化仪表股份有限公司 | A kind of double vortex street sensor fluid control devices of shock type and control method |
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| JPH03170024A (en) * | 1989-10-16 | 1991-07-23 | Kowa Maintenance:Kk | Right and left symmetrical column estimating flowmeter |
| JPH10281829A (en) * | 1997-04-02 | 1998-10-23 | Oval Corp | Vortex flowmeter |
| CN202057361U (en) * | 2011-05-17 | 2011-11-30 | 重庆梅安森科技股份有限公司 | Double vortex flowmeter |
| CN102261935A (en) * | 2011-05-05 | 2011-11-30 | 浙江迪元仪表有限公司 | Diaphragm capsule type double-probe vortex shedding flow meter |
| CN203719704U (en) * | 2014-02-11 | 2014-07-16 | 合肥精大仪表股份有限公司 | Steam vortex shedding flowmeter capable of measuring multiple parameters |
| CN205483096U (en) * | 2016-03-23 | 2016-08-17 | 合肥精大仪表股份有限公司 | Vortex flowmeter of two -way measurement |
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2016
- 2016-03-23 CN CN201610173809.3A patent/CN105973317A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03170024A (en) * | 1989-10-16 | 1991-07-23 | Kowa Maintenance:Kk | Right and left symmetrical column estimating flowmeter |
| JPH10281829A (en) * | 1997-04-02 | 1998-10-23 | Oval Corp | Vortex flowmeter |
| CN102261935A (en) * | 2011-05-05 | 2011-11-30 | 浙江迪元仪表有限公司 | Diaphragm capsule type double-probe vortex shedding flow meter |
| CN102261935B (en) * | 2011-05-05 | 2012-09-05 | 浙江迪元仪表有限公司 | Diaphragm capsule type double-probe vortex shedding flow meter |
| CN202057361U (en) * | 2011-05-17 | 2011-11-30 | 重庆梅安森科技股份有限公司 | Double vortex flowmeter |
| CN203719704U (en) * | 2014-02-11 | 2014-07-16 | 合肥精大仪表股份有限公司 | Steam vortex shedding flowmeter capable of measuring multiple parameters |
| CN205483096U (en) * | 2016-03-23 | 2016-08-17 | 合肥精大仪表股份有限公司 | Vortex flowmeter of two -way measurement |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806912A (en) * | 2017-12-13 | 2018-03-16 | 南京亿准纳自动化控制技术有限公司 | Bidirectional traffics measurement apparatus |
| CN109282862A (en) * | 2018-10-22 | 2019-01-29 | 山东科尔自动化仪表股份有限公司 | A kind of double vortex street sensor fluid measurement instruments of shock type and measurement method |
| CN109282863A (en) * | 2018-10-22 | 2019-01-29 | 山东科尔自动化仪表股份有限公司 | A kind of double vortex street sensor fluid control devices of shock type and control method |
| CN109282862B (en) * | 2018-10-22 | 2024-01-09 | 山东科尔自动化仪表股份有限公司 | Vibration-resistant type double vortex street sensor fluid measuring device and measuring method |
| CN109282863B (en) * | 2018-10-22 | 2024-09-10 | 山东科尔自动化仪表股份有限公司 | Vibration-resistant type double vortex street sensor fluid control device and control method |
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Application publication date: 20160928 |