CN104296812A - Right-angle high-pressure electromagnetic flow meter - Google Patents
Right-angle high-pressure electromagnetic flow meter Download PDFInfo
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- CN104296812A CN104296812A CN201410596539.8A CN201410596539A CN104296812A CN 104296812 A CN104296812 A CN 104296812A CN 201410596539 A CN201410596539 A CN 201410596539A CN 104296812 A CN104296812 A CN 104296812A
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Abstract
The invention relates to a right-angle high-pressure electromagnetic flow meter which comprises a flow meter shell, a sealing end cap connected with the flow meter shell, a connection base and an electromagnetic flow converter. A metering cavity is arranged in the flow meter shell, and the connection base is respectively connected with the sealing end cap and the electromagnetic flow converter. The flow meter is characterized in that an electromagnetic flow sensor is further included and is located in the metering cavity, the electromagnetic flow sensor comprises a sensor shell, a measurement electrode, an excitation coil and a magnetic yoke, the measurement electrode is embedded into the outer wall of the sensor shell, the excitation coil and the magnetic yoke are located on the inner wall of the sensor shell, and the excitation coil and the magnetic yoke are connected with the electromagnetic flow converter through cables. The right-angle high-pressure electromagnetic flow meter has the advantages that the Faraday electromagnetic induction principle is adopted, the induction signal amplitude and the fluid flow speed are in direct proportion, the structure is simple, movable components do not exist, the service life is long, maintenance load is little, linear flow measurement is achieved, non-linear revision is not needed, measurement precision is high and the flow range is wide.
Description
Technical field
The present invention relates to a kind of survey instrument, especially a kind of right-angle type high-voltage electromagnetic flowmeter.
Background technology
High-voltage electromagnetic flowmeter is by the high-pressure type electromagnetic flow transducer adopting proprietary technology special process to produce and intelligent converter is supporting forms, and is specifically designed to geology, petroleum prospecting, oil field system measure conducting liquid or the liquid-solid two-phase medium volumetric flow rate such as mud, grout, high pressure water injection under condition of high voltage.
Market there are two kinds of flowmeters:
The first, right-angle type high-pressure impeller flowmeter adopts vane rotary structure, angular velocity and flow velocity proportional principle when this structure make use of vane rotary, when detected fluid enters in table by watchcase lower end, rush at blade and make vane rotary, impeller rotate through impeller axle upper end annular magnetic steel, magnetic force is passed to the center magnet steel gear of indicating device on the upside of dividing plate, through reduction gearing drive character wheel display integrated flux; There is following shortcoming in this structure: 1, is subject to the dirty impact of fluid media (medium) and produces impeller by card wheel phenomenon, cause instrument fault not use; 2, during Long-Time Service, because of the wearing and tearing of rotary part, rotating mechanism transient equilibrium changes, and meter characteristic is changed, and can not ensure accuracy and the sensitivity of metering, time serious, instrument fault can not use; 3, rotating mechanism is that movable member serviceable life is short, maintenance is large; 4, measuring accuracy low (2.0 grades), range ratio little (10: 1).
The second, right-angle type high-pressure vortex flowmeter adopts magneto-electric vortex street structure, and this structure adopts Karman vortex street principle, when fluid flows through swirl generating body, alternately produce vortex, vortex cutting permanent magnet produces inductive impulse alternately, after magnetoelectricity conversion, be sent to pulse-detecting circuit.In certain reynolds number range, frequency and the rate of flow of fluid of vortex generation are proportional; There is following shortcoming in this structure: 1, is subject to the dirty impact of fluid media (medium) and produces the disorderly phenomenon of vortex, and magnetoelectricity switching signal, also easily by the interference of on-the-spot noise and pipe vibration, can not ensure the accuracy of measuring and sensitivity; 2, the low frequency range that makes of upper limiting frequency is narrow, needs multi-point flux non-liner revision; 3, because of reynolds number range restriction, primary flow signal frequency is low, and measuring accuracy is influenced, range ratio little (20: 1); 4, during Long-Time Service, the change of swirl generating body stress and permanent magnet, because of changes of magnetic field, make meter characteristic change, the accuracy of impact metering and sensitivity.
Summary of the invention
For the deficiency that prior art exists, the object of the present invention is to provide that a kind of long service life, maintenance are little, the comparatively large and right-angle type high-voltage electromagnetic flowmeter that measuring accuracy is high of range ratio.
Technical scheme of the present invention is achieved in that a kind of right-angle type high-voltage electromagnetic flowmeter, comprise flowmeter shell, the end cover be connected with flowmeter shell, Connection Block and electromagnetic flux converter, flowmeter shell inside is provided with measurement chamber, Connection Block connects end cover and electromagnetic flux converter respectively, it is characterized in that: also include electromagnetic flow transducer, this electromagnetic flow transducer is positioned at measurement chamber, this electromagnetic flow transducer comprises sensor outer housing, potential electrode and field coil and yoke, this potential electrode embeds on the outer wall of sensor outer housing, field coil and yoke are positioned at sensor outer housing inwall, and field coil is connected with electromagnetic flux converter by cable with yoke.
Be preferably, described electromagnetic flow transducer also comprises sensor connection tube seat and sensor connector, and this sensor connection tube seat is connected with sensor outer housing, and sensor connector is connected to the connecting portion of sensor connection tube seat and sensor outer housing.
Be preferably, described field coil and yoke are sealed in independently in annular seal space, and sealing chamber is positioned at sensor outer housing, is filled with galss fiber reinforced resin between described annular seal space and sensor outer housing.
Be preferably, described driver connects base and is connected with Connection Block.
Be preferably, described potential electrode comprises measurement section and connecting portion, and this connecting portion adopts with annular seal space through sensor outer housing and is threaded, and the joint face of measurement section and sensor outer housing is provided with O-ring seal.
Be preferably, described sensor outer housing is made up of PEEK material, and potential electrode is made up of 316Ti material, and sensor device joint is made up of 304 stainless steel materials, and sensor connection tube seat is made up of 304 stainless steel materials.
By adopting technique scheme, adopt faraday electromagnetic induction principle, adopt differential signal pickup (measuring principle) mode to replace two kinds of measuring principles in existing structure, antijamming capability is strong, induced signal amplitude and rate of flow of fluid proportional, structure is simple and without movable member, long service life, maintenance is few, linear flow measurement, do not need non-liner revision, measuring accuracy high (1.0 grades), flow range wide (range ratio 50: 1).
In sum, right-angle type high-voltage electromagnetic flowmeter structure is simple, manufacturing cost reduces, linear flow measurement, flowmeter calibration easily, reduces flow verification cost, internal magnetization measuring sonde can play rectification and the effect of accelerating fluid flow velocity, flow field is stablized, and in-situ velocity improves, and improves signal to noise ratio (S/N ratio).
Accompanying drawing explanation
Fig. 1 is specific embodiment of the invention structural representation;
Fig. 2 is electromagnetic flow transducer structural representation in the specific embodiment of the invention;
Fig. 3 is potential electrode structural representation in the specific embodiment of the invention;
Fig. 4 is measuring principle schematic diagram in the specific embodiment of the invention;
Fig. 5 is measurement parameter graph of a relation in the specific embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
As shown in Figures 1 and 2, the invention discloses a kind of right-angle type high-voltage electromagnetic flowmeter, comprise flowmeter shell 1, the end cover 2 be connected with flowmeter shell 1, Connection Block 4 and electromagnetic flux converter 3, flowmeter shell 1 inside is provided with measurement chamber 5, Connection Block 4 connects end cover 2 and electromagnetic flux converter 3 respectively, this flowmeter shell is provided with the medium inlet communicated with measurement chamber and media outlet, in the specific embodiment of the invention, also include electromagnetic flow transducer 6, this electromagnetic flow transducer 6 is positioned at measurement chamber 5, this electromagnetic flow transducer 6 comprises sensor outer housing 61, potential electrode 62 and field coil and yoke 68, this potential electrode 62 embeds on the outer wall of sensor outer housing 61, field coil and yoke 68 are positioned at sensor outer housing 61, and field coil is connected with electromagnetic flux converter 3 by cable 66 with yoke 68.
As shown in Figure 2, be preferably, described electromagnetic flow transducer 6 also comprises sensor connection tube seat 65 and sensor connector 64, and this sensor connection tube seat 65 is connected with sensor outer housing 61, and sensor connector 64 is connected to the connecting portion of sensor connection tube seat 65 and sensor outer housing 61.
As shown in Figure 2, be preferably, described field coil and yoke 68 are sealed in independently in annular seal space 67, sealing chamber 67 is positioned at sensor outer housing 61, galss fiber reinforced resin is filled with, in order to the electric insulation of flowmeter Electrical Measurement System and the physical strength of enhancing sensor between described annular seal space 67 and sensor outer housing 61.
As shown in Figure 2, be preferably, described driver connects base 65 and is connected with Connection Block 4, ensure that connection reliability between each parts, ensure that this right-angle type high-voltage electromagnetic flowmeter survey accuracy.
As shown in Figure 3, be preferably, described potential electrode 62 comprises measurement section 621 and connecting portion 622, this connecting portion 622 adopts with annular seal space 67 through sensor outer housing 61 and is threaded, and measurement section 621 and the joint face of sensor outer housing 61 are provided with O-ring seal, effective effect potential electrode being played to location, ensure that this right-angle type high-voltage electromagnetic flowmeter survey accuracy.
As shown in Figure 2, be preferably, described sensor outer housing 61 is made up of PEEK material, potential electrode 62 is made up of 316Ti material, sensor device joint 64 is made up of 304 stainless steel materials, sensor connection tube seat 65 is made up of 304 stainless steel materials, and PEEK is a kind of high temperature resistant, high performance thermoplastic special engineering plastic.It has the performance such as good mechanical property and chemicals-resistant, wear-resistant, hydrolysis; Its light specific gravity, self-lubricating property is good, owing to having extraordinary processing characteristics.The physical dimension of sensor outer housing and smooth finish contribute to improving flow field characteristic, and different probe sectional dimensions can increase or reduce fluid flow area, to adapt to the demand of different flow scope, ensure that this right-angle type high-voltage electromagnetic flowmeter serviceable life, and the right-angle type high-voltage electromagnetic flowmeter maintenance of this structure is little, range ratio is comparatively large and measuring accuracy is high.
By adopting technique scheme, adopt faraday electromagnetic induction principle, adopt differential signal pickup (measuring principle) mode to replace two kinds of measuring principles in existing structure, antijamming capability is strong, induced signal amplitude and rate of flow of fluid proportional, structure is simple and without movable member, long service life, maintenance is few, linear flow measurement, do not need non-liner revision, measuring accuracy high (1.0 grades), flow range wide (range ratio 50: 1).
In sum, right-angle type high-voltage electromagnetic flowmeter structure is simple, manufacturing cost reduces, linear flow measurement, flowmeter calibration easily, reduces flow verification cost, internal magnetization measuring sonde can play rectification and the effect of accelerating fluid flow velocity, flow field is stablized, and in-situ velocity improves, and improves signal to noise ratio (S/N ratio).
As shown in Figures 4 and 5, measuring principle is: when conductor moves in magnetic field by induction generation induced voltage, adopts method for electromagnetically measuring, and fluid media (medium) is equivalent to the conductor in motion, the direction of fluid flowing is vertical with electromagnetic field direction, and induced voltage is directly proportional to rate of flow of fluid.
Two potential electrode that the induced voltage produced in fluid is installed in the relative both sides of measuring sonde xsect detect induction; Signal voltage u is directly proportional to magnetic field intensity B, potential electrode distance D and mean flow rate V.The switch DC electric current having alternating polarity to change due to constant alternating magnetic field produces, and magnetic field intensity and electrode distance are constants, then signal voltage u is directly proportional to mean flow rate v, calculates according to mean flow rate and circulation area the fluid flow flowing through measurement chamber.
Wherein D is the distance between two potential electrode.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a right-angle type high-voltage electromagnetic flowmeter, comprise flowmeter shell, the end cover be connected with flowmeter shell, Connection Block and electromagnetic flux converter, flowmeter shell inside is provided with measurement chamber, Connection Block connects end cover and electromagnetic flux converter respectively, it is characterized in that: also include electromagnetic flow transducer, this electromagnetic flow transducer is positioned at measurement chamber, this electromagnetic flow transducer comprises sensor outer housing, potential electrode and field coil and yoke, this potential electrode embeds on the outer wall of sensor outer housing, field coil and yoke are positioned at sensor outer housing inwall, and field coil is connected with electromagnetic flux converter by cable with yoke.
2. right-angle type high-voltage electromagnetic flowmeter according to claim 1, it is characterized in that: described electromagnetic flow transducer also comprises sensor connection tube seat and sensor connector, this sensor connection tube seat is connected with sensor outer housing, and sensor connector is connected to the connecting portion of sensor connection tube seat and sensor outer housing.
3. right-angle type high-voltage electromagnetic flowmeter according to claim 1 and 2, it is characterized in that: described field coil and yoke are sealed in independently in annular seal space, sealing chamber is positioned at sensor outer housing, is filled with galss fiber reinforced resin between described annular seal space and sensor outer housing.
4. right-angle type high-voltage electromagnetic flowmeter according to claim 1 and 2, is characterized in that: described driver connects base and is connected with Connection Block.
5. right-angle type high-voltage electromagnetic flowmeter according to claim 1 and 2, it is characterized in that: described potential electrode comprises measurement section and connecting portion, this connecting portion adopts with annular seal space through sensor outer housing and is threaded, and the joint face of measurement section and sensor outer housing is provided with O-ring seal.
6. right-angle type high-voltage electromagnetic flowmeter according to claim 3, it is characterized in that: described potential electrode comprises measurement section and connecting portion, this connecting portion adopts with annular seal space through sensor outer housing and is threaded, and the joint face of measurement section and sensor outer housing is provided with O-ring seal.
7. right-angle type high-voltage electromagnetic flowmeter according to claim 1 and 2, is characterized in that: described sensor outer housing is made up of PEEK material.
8. right-angle type high-voltage electromagnetic flowmeter according to claim 3, is characterized in that: described sensor outer housing is made up of PEEK material.
9. right-angle type high-voltage electromagnetic flowmeter according to claim 4, is characterized in that: described sensor outer housing is made up of PEEK material.
10. right-angle type high-voltage electromagnetic flowmeter according to claim 8, it is characterized in that: described sensor outer housing is made up of PEEK material, potential electrode is made up of 316Ti material, and sensor device joint is made up of 304 stainless steel materials, and sensor connection tube seat is made up of 304 stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410596539.8A CN104296812A (en) | 2014-10-29 | 2014-10-29 | Right-angle high-pressure electromagnetic flow meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410596539.8A CN104296812A (en) | 2014-10-29 | 2014-10-29 | Right-angle high-pressure electromagnetic flow meter |
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| CN104296812A true CN104296812A (en) | 2015-01-21 |
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| CN201410596539.8A Pending CN104296812A (en) | 2014-10-29 | 2014-10-29 | Right-angle high-pressure electromagnetic flow meter |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043471A (en) * | 2015-07-13 | 2015-11-11 | 天津市津水工程新技术开发公司 | Plug-in flowmeter of novel structure and design and use method |
| CN109506725A (en) * | 2018-11-16 | 2019-03-22 | 安徽金大仪器有限公司 | One kind being suitable for high-pressure angle type pipeline new plug-in electromagnetic flowmeter |
| CN110274638A (en) * | 2018-03-13 | 2019-09-24 | 阿自倍尔株式会社 | Electromagnetic flowmeter |
| CN110361062A (en) * | 2019-08-28 | 2019-10-22 | 浙江奥新仪表有限公司 | A kind of high maintenance type right angle electromagnetic flowmeter |
| CN111174856A (en) * | 2018-11-12 | 2020-05-19 | 杭州为峰智能科技有限公司 | Rotation detection device |
| CN112212925A (en) * | 2020-08-21 | 2021-01-12 | 蚌埠恒远传感器科技有限公司 | Miniature flow sensor |
| CN112850615A (en) * | 2021-02-22 | 2021-05-28 | 沙宁 | Liquid quantitative filling device and method |
| CN110361062B (en) * | 2019-08-28 | 2024-10-22 | 浙江奥新仪表有限公司 | High maintenance type right-angle electromagnetic flowmeter |
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| CN2115521U (en) * | 1992-01-24 | 1992-09-09 | 天津市自动化仪表三厂 | Insert type electromagnetic flow sensor |
| JPH11132802A (en) * | 1997-10-28 | 1999-05-21 | Yokogawa Electric Corp | Electromagnetic flowmeter |
| CN101339060A (en) * | 2007-07-03 | 2009-01-07 | 上海星空自动化仪表有限公司 | Heavy caliber electrical flow meter for user to send it to be checked |
| CN201184800Y (en) * | 2008-04-25 | 2009-01-21 | 张锡平 | Magnetoelectric intelligent flow gauge |
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| CN202974352U (en) * | 2012-12-12 | 2013-06-05 | 承德市本特思达仪表有限公司 | Plug-in type electromagnetic flowmeter |
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| CN2115521U (en) * | 1992-01-24 | 1992-09-09 | 天津市自动化仪表三厂 | Insert type electromagnetic flow sensor |
| JPH11132802A (en) * | 1997-10-28 | 1999-05-21 | Yokogawa Electric Corp | Electromagnetic flowmeter |
| CN101339060A (en) * | 2007-07-03 | 2009-01-07 | 上海星空自动化仪表有限公司 | Heavy caliber electrical flow meter for user to send it to be checked |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043471A (en) * | 2015-07-13 | 2015-11-11 | 天津市津水工程新技术开发公司 | Plug-in flowmeter of novel structure and design and use method |
| CN110274638A (en) * | 2018-03-13 | 2019-09-24 | 阿自倍尔株式会社 | Electromagnetic flowmeter |
| CN110274638B (en) * | 2018-03-13 | 2021-06-25 | 阿自倍尔株式会社 | Electromagnetic flowmeter |
| CN111174856A (en) * | 2018-11-12 | 2020-05-19 | 杭州为峰智能科技有限公司 | Rotation detection device |
| CN111174856B (en) * | 2018-11-12 | 2024-04-26 | 杭州为峰智能科技有限公司 | Rotation detection device |
| CN109506725A (en) * | 2018-11-16 | 2019-03-22 | 安徽金大仪器有限公司 | One kind being suitable for high-pressure angle type pipeline new plug-in electromagnetic flowmeter |
| CN110361062A (en) * | 2019-08-28 | 2019-10-22 | 浙江奥新仪表有限公司 | A kind of high maintenance type right angle electromagnetic flowmeter |
| CN110361062B (en) * | 2019-08-28 | 2024-10-22 | 浙江奥新仪表有限公司 | High maintenance type right-angle electromagnetic flowmeter |
| CN112212925A (en) * | 2020-08-21 | 2021-01-12 | 蚌埠恒远传感器科技有限公司 | Miniature flow sensor |
| CN112850615A (en) * | 2021-02-22 | 2021-05-28 | 沙宁 | Liquid quantitative filling device and method |
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Application publication date: 20150121 |