CN101398318B - Momentum type effusion meter based on magnetic thrust and flow measurement method - Google Patents
Momentum type effusion meter based on magnetic thrust and flow measurement method Download PDFInfo
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- CN101398318B CN101398318B CN2007100095798A CN200710009579A CN101398318B CN 101398318 B CN101398318 B CN 101398318B CN 2007100095798 A CN2007100095798 A CN 2007100095798A CN 200710009579 A CN200710009579 A CN 200710009579A CN 101398318 B CN101398318 B CN 101398318B
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- permanent magnet
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- magnetic thrust
- momentum
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- 238000000691 measurement method Methods 0.000 title 1
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000002775 capsule Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The invention provides a momentum-typed flowmeter based on magnetic pushing force, comprising a force-bearing element, a force transmission element, a sensor, and a signal processing and display device; and the force transmission element consists of a first permanent magnet and a second permanent magnet. When fluid flows in a pipeline to be measured, the fluid generates a force on the force-bearing element; the force-bearing element and the first permanent magnet which is connected with the force-bearing element slide under the force, thus leading the distance of the first permanent magnet and the second permanent magnet to generate change and leading the magnetic pushing force or magnetic field strength between the first permanent magnet and the second permanent magnet to generate the changes; the sensor which is closely connected with the second permanent magnet outputs the signal to generate the changes corresponding to the magnetic pushing force or the magnetic field strength; and the variable quantity output by the sensor is calculated and displayed by the signal processing and display device. The momentum-typed flowmeter uses a pair of permanent magnets as the force transmission element to replace the spring, thus ensuring the stability and reliability of the sensor, improving the anti-corrosion capability of the sensor and prolonging the service life of the sensor.
Description
Technical field
The present invention relates to a kind of metering device of meter fluid flow, be meant a kind of momentum flowmeter and flow metering method especially based on magnetic thrust.
Background technology
Momentum flowmeter of the prior art generally includes a force-summing element, a spring, a sensor and a signal Processing and display device, when fluid flows in measured pipeline, fluid produces an acting force to force-summing element, this acting force passes to sensor by spring, and by the signal Processing that is connected with sensor and display device with the fluid flow information calculations and show.Above-mentioned flowmeter can't guarantee stability, accuracy and the reliability that its power is transmitted, thereby the precision that influence is measured influences the life-span of flowmeter, and influences the security and the reliability of flowmeter.
Summary of the invention
Fundamental purpose of the present invention is to overcome the shortcoming of prior art, utilizes the characteristics of magnetic repulsion and penetrability, and the power that force-summing element is experienced is passed in the annular seal space that sensor is housed, and a kind of momentum flowmeter and flow metering method based on magnetic thrust is provided.
The present invention adopts following technical scheme: a kind of momentum flowmeter based on magnetic thrust comprises force-summing element, force transmission element, sensor, signal Processing and display device; Described force transmission element is made up of first permanent magnet and second permanent magnet; First permanent magnet links to each other with force-summing element, and is located at movably in the measured pipeline; Second permanent magnet links to each other with sensor, and is located in the interior seal chamber of measured pipeline; First permanent magnet is corresponding on fluid flow direction with second permanent magnet; Described sensor is connected with signal Processing and display device.
Aforementioned a kind of momentum flowmeter based on magnetic thrust, the described force-summing element and first permanent magnet are parallel on the axle of fluid flow direction axially being sheathed on one movably, this axle is fixed on the bracing strut, and this bracing strut is fixed on the inwall of measured pipeline.
Aforementioned a kind of momentum flowmeter based on magnetic thrust, the described force-summing element and first permanent magnet also are located on the slide rail slidably, and this slide rail is fixed on the inwall of measured pipeline.
Aforementioned a kind of momentum flowmeter based on magnetic thrust, described second permanent magnet and sensor are fixed in the annular seal space, and the sealing chamber is located in the measured pipeline.
Aforementioned a kind of momentum flowmeter based on magnetic thrust, described sensor is one of strain force sensor, current vortex sensor, capacitive transducer, inductance sensor.
A kind of method of carrying out flow measurement based on the momentum flowmeter of magnetic thrust, momentum flowmeter based on magnetic thrust, this device comprises force-summing element, force transmission element, sensor, signal Processing and display device, and described force transmission element is made up of first permanent magnet and second permanent magnet; First permanent magnet links to each other with force-summing element, and is located at movably in the measured pipeline; Second permanent magnet links to each other with sensor, is fixed in the annular seal space and is located in the measured pipeline; Its method of work is:
When 1) fluid flows, force-summing element is produced an acting force in measured pipeline;
2) force-summing element and the effect lower slider of first permanent magnet that is attached thereto at this acting force, distance between first permanent magnet and second permanent magnet is changed, thereby magnetic thrust or magnetic field intensity between first permanent magnet and second permanent magnet are changed, go out this variable quantity by sensor.
The position that aforementioned a kind of method of carrying out flow measurement based on the momentum flowmeter of magnetic thrust, described first permanent magnet and second permanent magnet are pressed homopolar-repulsion is provided with.
Aforementioned a kind of method of carrying out flow measurement based on the momentum flowmeter of magnetic thrust, the described force-summing element and first permanent magnet are limited in axially or on the FLUID TRANSPORTATION direction moving of pipeline.
Aforementioned a kind of method of carrying out flow measurement based on the momentum flowmeter of magnetic thrust, the sensor output signal that links to each other with second permanent magnet produces with this magnetic thrust or change of magnetic field strength and changes accordingly, and its variable quantity becomes certain proportionate relationship with the size of fluid flow.
Aforementioned a kind of method of carrying out flow measurement based on the momentum flowmeter of magnetic thrust, the variable quantity of sensor output calculates and shows through signal Processing and display device.
By the above-mentioned description of this invention as can be known, compared with prior art, a kind of momentum flowmeter based on magnetic thrust of the present invention has following advantage: adopt pair of permanent magnets as force transmission element, the power that force-summing element is surveyed is passed to and is in absolute air-tight state sensor, the security and the reliability of sensor have been improved, simultaneously also improve the corrosion resistance of flowmeter greatly, and prolonged its life-span.
Description of drawings
Fig. 1 is the structural representation of the specific embodiment of the present invention one;
Fig. 2 is the structural representation of the specific embodiment of the present invention two.
Embodiment
Below the invention will be further described by embodiment.
Embodiment one, with reference to Fig. 1, a kind of momentum flowmeter based on magnetic thrust comprises a force-summing element 3, a force transmission element, a sensor 4, a signal Processing and display device 5, and force transmission element is made up of first permanent magnet 1 and second permanent magnet 2.First permanent magnet 1 links to each other with force-summing element 3, and be sheathed on movably one be parallel to fluid flow direction the axle 7 on, this axle 7 is fixed on the bracing strut 6, this bracing strut 6 is fixed on the inwall of measured pipeline 9.Second permanent magnet 2 links to each other with sensor 4, and is fixed in the annular seal space 8, and sealing chamber 8 is located in the measured pipeline 9 and with measured fluid and is isolated.First permanent magnet 1 is corresponding on fluid flow direction with second permanent magnet 2; Sensor 4 is connected with signal Processing and display device 5.Sensor 4 can adopt strain force sensor, can certainly adopt current vortex sensor, capacitive transducer or inductance sensor.
When fluid flows in measured pipeline 9, because of its momentum principle produces an acting force to force-summing element 3, the force-summing element 3 and first permanent magnet 1 endwisely slip in axle 7 upper edges, the distance that makes first permanent magnet 1 and be fixed between second permanent magnet 2 in the annular seal space 8 changes, promptly the magnetic field intensity between first permanent magnet 1 and second permanent magnet 2 changes and causes sensor 4 output signals that are connected with second permanent magnet 2 in the annular seal space 8 to produce corresponding the variation, its variable quantity becomes certain proportionate relationship with the size of fluid flow, and the variable quantity of sensor 4 outputs calculates and shows through connected signal Processing and display device 5.
A kind of momentum flowmeter of the present invention based on magnetic thrust, the singularity of utilizing magnet to have, be to exist the basic characteristics that homopolar-repulsion, heteropole inhale mutually and the magnetic line of force between N, the S utmost point to the peculiar penetrability of non-magnetic conduction object, magnetic thrust is changed into elastic force, be used for substituting spring, most importantly required spring force is become the power that can penetrate capsule walls and solved the difficult point that spring can't parting transmits, thereby can guarantee the absolute leakproofness of sensor, further improve its security, reliability.
Embodiment two, with reference to Fig. 2, its basic structure is identical with embodiment one with principle, and its difference is: do not have bracing strut 6 and axle 7, the force-summing element 3 and first permanent magnet 1 are located on the slide rail 10 slidably, and this slide rail 10 is fixed on the inwall of measured pipeline 9.
Above-mentioned only is two embodiments of the present invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (9)
1. the momentum flowmeter based on magnetic thrust comprises force-summing element, force transmission element, sensor, signal Processing and display device, it is characterized in that: described force transmission element is made up of first permanent magnet and second permanent magnet; First permanent magnet links to each other with force-summing element, and is located at movably in the measured pipeline; Second permanent magnet links to each other with sensor, and is located in the interior seal chamber of measured pipeline; First permanent magnet is corresponding on fluid flow direction with second permanent magnet; Described sensor is connected with signal Processing and display device; The position that described first permanent magnet and second permanent magnet are pressed homopolar-repulsion is provided with.
2. a kind of momentum flowmeter as claimed in claim 1 based on magnetic thrust, it is characterized in that: the described force-summing element and first permanent magnet are sheathed on one movably and are parallel on the axle of fluid flow direction, this axle is fixed on the bracing strut, and this bracing strut is fixed on the inwall of measured pipeline.
3. a kind of momentum flowmeter based on magnetic thrust as claimed in claim 1 is characterized in that: the described force-summing element and first permanent magnet are located on the slide rail slidably, and this slide rail is fixed on the inwall of measured pipeline.
4. a kind of momentum flowmeter based on magnetic thrust as claimed in claim 1 is characterized in that: described second permanent magnet and sensor are fixed in the annular seal space, and the sealing chamber is located in the measured pipeline.
5. a kind of momentum flowmeter based on magnetic thrust as claimed in claim 1 is characterized in that: described sensor is one of strain force sensor, current vortex sensor, capacitive transducer, inductance sensor.
6. method of carrying out flow measurement based on the momentum flowmeter of magnetic thrust, momentum flowmeter based on magnetic thrust, this flowmeter comprises force-summing element, force transmission element, sensor, signal Processing and display device, and described force transmission element is made up of first permanent magnet and second permanent magnet; First permanent magnet links to each other with force-summing element, and is located at movably in the measured pipeline; Second permanent magnet links to each other with sensor, is fixed in the annular seal space and is located in the measured pipeline; The position that described first permanent magnet and second permanent magnet are pressed homopolar-repulsion is provided with; Its method of work is:
When 1) fluid flows, force-summing element is produced an acting force in measured pipeline;
2) force-summing element and the effect lower slider of first permanent magnet that is attached thereto at this acting force, distance between first permanent magnet and second permanent magnet is changed, thereby magnetic thrust or magnetic field intensity between first permanent magnet and second permanent magnet are changed, go out this variable quantity by sensor.
7. a kind of method of carrying out flow measurement based on the momentum flowmeter of magnetic thrust according to claim 6 is characterized in that the described force-summing element and first permanent magnet are limited in axially or on the FLUID TRANSPORTATION direction moving of pipeline.
8. according to claim 6 or 7 described a kind of methods of carrying out flow measurement based on the momentum flowmeter of magnetic thrust, it is characterized in that the sensor output signal generation that links to each other with second permanent magnet changes accordingly with this magnetic thrust or change of magnetic field strength, its variable quantity becomes certain proportionate relationship with the size of fluid flow.
9. a kind of method of carrying out flow measurement based on the momentum flowmeter of magnetic thrust according to claim 8 is characterized in that the variable quantity of sensor output calculates and shows through signal Processing and display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100095798A CN101398318B (en) | 2007-09-24 | 2007-09-24 | Momentum type effusion meter based on magnetic thrust and flow measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100095798A CN101398318B (en) | 2007-09-24 | 2007-09-24 | Momentum type effusion meter based on magnetic thrust and flow measurement method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101398318A CN101398318A (en) | 2009-04-01 |
| CN101398318B true CN101398318B (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100095798A Expired - Fee Related CN101398318B (en) | 2007-09-24 | 2007-09-24 | Momentum type effusion meter based on magnetic thrust and flow measurement method |
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| Country | Link |
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| CN (1) | CN101398318B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750117B (en) * | 2010-03-05 | 2011-08-10 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | High-pressure gas metering device |
| MD20100049A2 (en) * | 2010-04-13 | 2011-11-30 | Николае БЕЛДИМАН | Device for measuring the fluid flow rate in the transport pipeline |
| CN101915628A (en) * | 2010-06-22 | 2010-12-15 | 青岛海威茨仪表有限公司 | Momentum-type heat meter |
| CN105136213A (en) * | 2015-07-29 | 2015-12-09 | 赵新时 | Momentum type flow meter based on fluid thrust |
| CN109297548B (en) * | 2018-09-29 | 2024-08-23 | 山东科尔自动化仪表股份有限公司 | Magnetic flowmeter and measuring method |
| CN111103019B (en) * | 2019-12-23 | 2021-12-07 | 山东胜利通海集团东营天蓝节能科技有限公司 | Double-measurement liquid flowmeter based on flow resistance |
| CN111256765B (en) * | 2020-03-23 | 2024-12-03 | 中物合集团有限公司 | A magnetic push target flow meter |
| CN114920199B (en) * | 2021-12-30 | 2024-04-09 | 北京恒合信业技术股份有限公司 | Magnetic induction type flow sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560569A (en) * | 2004-02-18 | 2005-01-05 | 沈阳市传感技术研究所 | Permanent-magnet small bore flowmeter |
| CN2839978Y (en) * | 2005-11-01 | 2006-11-22 | 深圳市众恒测控技术有限公司 | Vortex type electromagnetic flowmeter |
| CN2859465Y (en) * | 2006-05-26 | 2007-01-17 | 熊焕祈 | Strain target-type flowmeter |
-
2007
- 2007-09-24 CN CN2007100095798A patent/CN101398318B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560569A (en) * | 2004-02-18 | 2005-01-05 | 沈阳市传感技术研究所 | Permanent-magnet small bore flowmeter |
| CN2839978Y (en) * | 2005-11-01 | 2006-11-22 | 深圳市众恒测控技术有限公司 | Vortex type electromagnetic flowmeter |
| CN2859465Y (en) * | 2006-05-26 | 2007-01-17 | 熊焕祈 | Strain target-type flowmeter |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2005-282676A 2005.10.13 |
| JP特开2005-321228A 2005.11.17 |
| 张劲松,冯国华,朱春波.磁斥力流量传感器的研究.《计量技术》.1997,21-24. * |
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| CN101398318A (en) | 2009-04-01 |
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Granted publication date: 20110406 Termination date: 20160924 |