CN110081940A - A kind of high-precision electromagnetism water meter - Google Patents
A kind of high-precision electromagnetism water meter Download PDFInfo
- Publication number
- CN110081940A CN110081940A CN201910438582.4A CN201910438582A CN110081940A CN 110081940 A CN110081940 A CN 110081940A CN 201910438582 A CN201910438582 A CN 201910438582A CN 110081940 A CN110081940 A CN 110081940A
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- electrode
- wall
- measurement
- conduit
- water meter
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000005259 measurement Methods 0.000 claims abstract description 83
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 4
- 230000005291 magnetic effect Effects 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 6
- 230000006698 induction Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- -1 highstrenghtpiston Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
- G01F1/56—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 electric or magnetic effects
- G01F1/58—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 electric or magnetic effects by electromagnetic flowmeters
- G01F1/584—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 electric or magnetic effects by electromagnetic flowmeters constructions of electrodes, accessories therefor
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention belongs to flow-meter fields, more particularly to a kind of high-precision electromagnetism water meter, it measures conduit and uses tetrafluoride material, the middle part for measuring conduit is rectangle pipeline, rectangle pipeline is divided into long side inner wall and short side inner wall, flow measurement electrode is mounted on short side inner wall and through the wall surface of measurement conduit, measures and has in the outside wall surface of conduit there are two the coil mounting groove for being used to install magnet exciting coil being oppositely arranged, the bottom surface of coil mounting groove is parallel with long side inner wall.Rectangle pipeline keeps the distance between two magnet exciting coils being oppositely arranged closer, increasing magnetic field, while the distance between two flow measurement electrodes being oppositely arranged are bigger, improve the measurement accuracy of electromagnetism water meter.Directly traditional liner and measurement catheter design are integrated, measurement conduit directlys adopt tetrafluoride material, and magnet exciting coil is directly installed on measurement catheter interior, and modularized design is compact-sized, small in size, simplify mounting process and saved production cost.
Description
Technical field
The invention belongs to technology of instrument and meter fields, and in particular to a kind of high-precision electromagnetism water meter.
Background technique
Electromagnetism water meter is surveyed according to conductive fluid by the electromotive force inducted when externally-applied magnetic field using electromagnetic induction principle
Measure a kind of instrument of conductive fluid flow.The structure of electromagnetism water meter is mainly by magnetic circuit system, measurement conduit, electrode, shell, lining
It is formed with parts such as converters.
Magnetic circuit system: effect is to generate uniform direct current or alternating current magnetic field.DC circuit magnetic loop is realized with permanent magnet, excellent
It is relatively simple for structure for putting, and the interference by alternating current magnetic field is smaller, but it easily makes through the electrolytic liquid polarization in measurement conduit,
Surround positive electrode by anion, negative electrode is surrounded by cation, i.e. polarization of electrode phenomenon, and leads to internal resistance between two electrodes
Increase, thus seriously affects instrument normal work.When pipe diameter is larger, permanent magnet is accordingly also very big, it is heavy and without
Ji so electromagnetism water meter generally uses alternating magnetic field, and is that the excitation of 50HZ power frequency supply generates.
Measure conduit: effect is that tested conductive liquid is allowed to pass through.In order to make the magnetic line of force pass through magnetic flux when measurement conduit
It is split or short circuit, measurement conduit must use non-magnetic, low conductivity, low heat conductivity and the material with certain mechanical strength
It is made, non-magnetic stainless steel, glass reinforced plastic, highstrenghtpiston, aluminium etc. can be selected.
Lining: on the inside of measurement conduit and flange sealing surface, have in one layer of complete electrically insulating substrate.It is directly contacted
Fluid to be measured, effect are to increase the corrosion resistance of measurement conduit, prevent induced potential by metal measurement duct wall short circuit.Lining
In material is mostly corrosion-resistant, high temperature resistant, wear-resisting polytetrafluoroethylplastic plastic, ceramics etc..
Electrode: it is to draw and be measured directly proportional induced potential signal that it, which is acted on,.Electrode is generally used non-magnetic stainless
Steel is made, its installation site is preferably in the vertical direction of pipeline, to prevent precipitate bulk from influencing measurement accuracy above it.
Shell: being made using ferromagnetic material, is the outer cover of distribution system magnet exciting coil, and the interference of external magnetic field is isolated.
Converter: the induced potential signal given birth to by liquid flow movable property is very faint, influenced by various disturbing factors it is very big,
The effect of converter is exactly that induced potential signal is amplified and converted to unified standard signal and inhibits main interference signal.
Its task be electrode detection to induced potential signal Ex through amplification be converted into unified standard direct current signal.
Conductor cuts electromagnetic field and generates induced electromotive force, specific formula are as follows:
Wherein B- magnetic induction intensity, D- conductor length, the distance of dl- movement, it can be seen that induced electromotive force is with magnetic induction
Intensity and conductor length are directly proportional, this principle is applied in electromagnetism water meter, and the precision of electromagnetism water meter is with magnetic induction intensity and two-phase
It is directly proportional to the distance between measuring electrode.
The magnet exciting coil of the current big multi-magnetic circuit system of electromagnetism water meter is mounted on the outside of measurement conduit, measures the interior of conduit
Portion will also install lining, and mounting process is complicated, and the measurement partial volume of electromagnetism water meter is big, and structure is not compact, at high cost.
Summary of the invention
The purpose of the present invention is overcome to exist in the prior art to need to be continuously improved requirement and the erector of measurement accuracy
The defect of skill complexity provides a kind of measurement accuracy high and compact-sized, easy for installation high-precision electromagnetism water meter.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of high-precision electromagnetism water meter, including measurement conduit, magnet exciting coil and electrode, it is characterised in that: the measurement is led
Pipe use tetrafluoride material, it is described measurement conduit middle part be rectangle pipeline, the rectangle pipeline be divided into long side inner wall and
Short side inner wall, flow measurement electrode are mounted on the short side inner wall and through the wall surface of the measurement conduit, the survey
Measuring tool in the outside wall surface of conduit, there are two the coil mounting groove for being used to install the magnet exciting coil being oppositely arranged, the coil peaces
The bottom surface of tankage is parallel with the long side inner wall.
Further, the electrode further includes being mounted on the long side inner wall and through the wall surface of the measurement conduit
Earth polar and the empty full packages detecting electrode being mounted on another long side inner wall is oppositely arranged with the earth polar.
Further, the long side L of the rectangle pipeline is 1.2~2.5 times of its short side S.
Further, there are two what is be oppositely arranged to be used to install the flow measurement for tool in the outside wall surface of the measurement conduit
The bottom of the electrode fitting groove of electrode, the electrode fitting groove has first through hole.
Further, the electrode includes electrode screw rod, electrode pads and electrode nut, and the electrode screw rod is led from measurement
The inner wall of pipe, which faces out, to be pierced by electrode fitting groove, and electrode pads are close to the electrode fitting groove bottom surface and are set in the electrode spiral shell
On bar, the electrode nut is set on the electrode screw rod on the outside of the electrode pads.
Further, the bottom surface of the coil mounting groove has the second through-hole for being through to the measurement pipe inner wall face,
The electrode screw rod is faced out from the inner wall of measurement conduit to be pierced by electrode fitting groove, and electrode pads are close to the coil mounting groove
Bottom surface is set on the electrode screw rod, and the electrode nut is set on the electrode screw rod on the outside of the electrode pads.
Further, one end close to the rectangle pipeline of the first through hole and second through-hole all has heavy
Head slot, one end that the electrode screw rod is mounted on the measurement catheter interior are mounted in the countersunk head slot.
Further, the both ends of the measurement conduit have the drainage guide face being connected with the rectangle pipeline.
A kind of beneficial effect of high-precision electromagnetism water meter of the invention is:
1, the present invention breaks the thought that traditional measurement conduit middle part is circular pipe, designs rectangularity pipeline, makes
The distance between two magnet exciting coils being oppositely arranged are closer, increasing magnetic field, while two flow measurements being oppositely arranged
The distance between electrode is bigger, and the induced electromotive force measured in this way is bigger, improves the measurement accuracy of electromagnetism water meter.
2, the present invention is not provided with liner, is directly integrated traditional liner and measurement catheter design, measurement conduit is direct
Using tetrafluoride material, and on measurement conduit, setting electrode fitting groove and coil mounting groove, magnet exciting coil are directly installed on survey
Catheter interior is measured, modularized design is compact-sized, small in size, simplify mounting process and saved production cost.
3, electrode screw rod is mounted in countersunk head slot, be ensure that the slickness in measurement pipe inner wall face, is eliminated obstruction water flow
Factor, further improve the measurement accuracy of electromagnetism water meter.
4, the drainage guide face being connected with rectangle pipeline is set at the both ends of measurement conduit, water flow is drained, as far as possible
It reduces water flow and encounters the velocity variations after water meter, further increase the precision of water meter measurement.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is perspective view of the embodiment of the present invention；
Fig. 2 is main view of the embodiment of the present invention；
Fig. 3 is A-A cross-sectional view in Fig. 2；
Fig. 4 is measurement conduit perspective view.
In figure: 1, measuring conduit, 11, rectangle pipeline, 12, long side inner wall, 13, short side inner wall, 14, coil installation
Slot, 15, electrode fitting groove, 16, first through hole, the 17, second through-hole, 18, countersunk head slot, 19, drainage guide face, 2, magnet exciting coil, 3,
Electrode, 31, electrode screw rod, 32, electrode pads, 33, electrode nut, 34, flow measurement electrode, 35, earth polar, 36, empty full packages survey
Measure electrode.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
A kind of specific embodiment of high-precision electromagnetism water meter of the invention as Figure 1-Figure 4, including measurement conduit 1,
Magnet exciting coil 2 and electrode 3, measurement conduit 1 use tetrafluoride material, and the middle part of measurement conduit 1 is rectangle pipeline 11, rectangle pipe
Road 11 divides for long side inner wall 12 and short side inner wall 13, and flow measurement electrode 34 is mounted on short side inner wall 13 and through surveying
The wall surface of conduit 1 is measured, measuring tool in the outside wall surface of conduit 1, there are two the coil peaces for being used to install magnet exciting coil 2 being oppositely arranged
The bottom surface of tankage 14, coil mounting groove 14 is parallel with long side inner wall 12.
Tool is there are four electrode 3 in the present embodiment, and two flow measurement electrodes 34 are opposite to be mounted on short side inner wall 13, also
It is mounted on including being mounted on long side inner wall 12 and running through the earth polar 35 of the wall surface of measurement conduit 1 and be oppositely arranged with earth polar 35
Empty full packages detecting electrode 36 on another long side inner wall 12.When the inside cutting magnetic induction line for thering is fluid to pass through measurement conduit 1,
Potential difference is generated between two flow measurement electrodes 34, that is, can be used to the flow for measuring fluid.When empty 36 He of full packages detecting electrode
When there is no potential difference between ground level, represents and flowed through in the measurement conduit 1 of electromagnetism water meter without fluid.
As a kind of preferred embodiment, the long side L of rectangle pipeline 11 is 1.2~2.5 times of its short side S.
In the present embodiment, measuring tool in the outside wall surface of conduit 1, there are two what is be oppositely arranged to be used to install flow measurement electrode
The bottom of 34 electrode fitting groove 15, electrode fitting groove 15 has first through hole 16.Two electrode fitting grooves 15 are respectively intended to pacify
Earth polar 35 and empty full packages detecting electrode 36 are filled, two flow measurement electrodes 34 are mounted in two coil mounting grooves 14, excitation wire
Circle 2 sets flow measurement electrode 34 outside.
In the present embodiment, electrode 3 includes electrode screw rod 31, electrode pads 32 and electrode nut 33, and electrode screw rod 31 is from survey
The inner wall of amount conduit 1, which faces out, to be pierced by electrode fitting groove 15, and electrode pads 32 are close to 15 ground end surface cover of electrode fitting groove and are located at
On electrode screw rod 31, electrode nut 33 is set on the electrode screw rod 31 in 32 outside of electrode pads.
The bottom surface of coil mounting groove 14 have be through to measurement 1 inner wall of conduit the second through-hole 17, electrode screw rod 31 from
The inner wall of measurement conduit 1, which faces out, to be pierced by electrode fitting groove 15, and electrode pads 32 are close to 14 ground end surface cover of coil mounting groove and are set
On electrode screw rod 31, electrode nut 33 is set on the electrode screw rod 31 in 32 outside of electrode pads, and conducting wire is screwed into the electrode
Between gasket 32 and electrode nut 33.
In the present embodiment, one end of the close rectangle pipeline 11 of first through hole 16 and the second through-hole 17 all has countersunk head slot
18, one end that electrode screw rod 31 is mounted on inside measurement conduit 1 is mounted in countersunk head slot 18.Electrode screw rod 31 is mounted on countersunk head slot
In 18, the slickness of measurement 1 inner wall of conduit ensure that, eliminate the factor for hindering water flow, further improve electromagnetism water meter
Measurement accuracy.
In order to further improve measurement accuracy, the both ends of measurement conduit 1 have the drainage being connected with rectangle pipeline 11
Guide face 19, drains water flow, reduces water flow to the greatest extent and encounters the velocity variations after water meter.
The present invention break be in the middle part of traditional measurement conduit 1 circular pipe thought, design rectangularity pipeline 11, make
Closer, the increasing magnetic field of the distance between two magnet exciting coils 2 being oppositely arranged, while two flow measurements being oppositely arranged
The distance between electrode 34 is bigger, long with magnetic induction intensity and conductor according to the induced electromotive force mentioned in this patent background technique
Spend directly proportional, the induced electromotive force measured in this way is bigger, improves the measurement accuracy of electromagnetism water meter.
The present invention is not provided with liner, is directly integrated traditional liner and measurement catheter design, and measurement conduit 1 is directly adopted
With tetrafluoride material, and electrode fitting groove 15 is set on measurement conduit 1 and coil mounting groove 14, magnet exciting coil 2 are mounted directly
Inside measurement conduit 1, modularized design is compact-sized, small in size, simplify mounting process and saved production cost.
It should be appreciated that described above, the specific embodiments are only for explaining the present invention, is not intended to limit the present invention.By
The obvious changes or variations that spirit of the invention is extended out are still in the protection scope of this invention.
Claims (8)
1. a kind of high-precision electromagnetism water meter, including measurement conduit (1), magnet exciting coil (2) and electrode (3), it is characterised in that: described
It measures conduit (1) and uses tetrafluoride material, the middle part of measurement conduit (1) is rectangle pipeline (11), the rectangle pipeline
(11) it is divided into long side inner wall (12) and short side inner wall (13), flow measurement electrode (34) is mounted on the short side inner wall
(13) it is oppositely arranged there are two having on and on the wall surface of measurement conduit (1), the outside wall surface of measurement conduit (1)
For installing the coil mounting groove (14) of the magnet exciting coil (2), in the bottom surface of the coil mounting groove (14) and the long side
Wall surface (12) is parallel.
2. a kind of high-precision electromagnetism water meter according to claim 1, it is characterised in that: the electrode (3) further includes installation
On the long side inner wall (12) and through it is described measurement conduit (1) wall surface earth polar (35) and with the earth polar (35) phase
The empty full packages detecting electrode (36) setting being mounted on another long side inner wall (12).
3. a kind of high-precision electromagnetism water meter according to claim 1, it is characterised in that: the length of the rectangle pipeline (11)
Side L is 1.2~2.5 times of its short side S.
4. a kind of high-precision electromagnetism water meter according to claim 2, it is characterised in that: the outer wall of measurement conduit (1)
Have on face there are two the electrode fitting groove (15) for being used to install the flow measurement electrode (34) being oppositely arranged, the electrode is pacified
The bottom of tankage (15) has first through hole (16).
5. a kind of high-precision electromagnetism water meter according to claim 4, it is characterised in that: the electrode (3) includes electrode spiral shell
Bar (31), electrode pads (32) and electrode nut (33), the electrode screw rod (31) face out from the inner wall of measurement conduit (1) and wear
Out to electrode fitting groove (15), electrode pads (32) are close to electrode fitting groove (15) bottom surface and are set in the electrode screw rod
(31) on, the electrode nut (33) is set on the electrode screw rod (31) on the outside of the electrode pads (32).
6. a kind of high-precision electromagnetism water meter according to claim 5, it is characterised in that: the bottom of the coil mounting groove (14)
Face have is through to it is described measurement conduit (1) inner wall the second through-hole (17), the electrode screw rod (31) from measurement conduit (1)
Inner wall face out and be pierced by electrode fitting groove (15), electrode pads (32) are close to coil mounting groove (14) bottom surface and are set in
On the electrode screw rod (31), the electrode nut (33) is set in the electrode screw rod (31) on the outside of the electrode pads (32)
On.
7. a kind of high-precision electromagnetism water meter according to claim 6, it is characterised in that: the first through hole (16) and described
One end close to the rectangle pipeline (11) of second through-hole (17) all has countersunk head slot (18), electrode screw rod (31) peace
One end internal mounted in measurement conduit (1) is mounted in the countersunk head slot (18).
8. a kind of high-precision electromagnetism water meter according to claim 1-7, it is characterised in that: the measurement conduit
(1) both ends have the drainage guide face (19) being connected with the rectangle pipeline (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910438582.4A CN110081940A (en) | 2019-05-24 | 2019-05-24 | A kind of high-precision electromagnetism water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910438582.4A CN110081940A (en) | 2019-05-24 | 2019-05-24 | A kind of high-precision electromagnetism water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110081940A true CN110081940A (en) | 2019-08-02 |
Family
ID=67421699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910438582.4A Pending CN110081940A (en) | 2019-05-24 | 2019-05-24 | A kind of high-precision electromagnetism water meter |
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| Country | Link |
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| CN (1) | CN110081940A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116734934A (en) * | 2023-08-11 | 2023-09-12 | 德阳市新泰自动化仪表有限公司 | Compact electromagnetic flowmeter, installation method and flow measuring method |
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|---|---|---|---|---|
| US20050193833A1 (en) * | 2003-10-10 | 2005-09-08 | Abb Patent Gmbh | Magnetic-inductive measuring device for flowing substances and method for its production |
| CN101883966A (en) * | 2007-12-05 | 2010-11-10 | 恩德斯+豪斯流量技术股份有限公司 | Electrode for a magnetic-inductive flow-rate meter |
| CN102538882A (en) * | 2012-01-16 | 2012-07-04 | 燕山大学 | Flowmeter sensor based on electromagnetic correlation method |
| CN104903685A (en) * | 2012-12-04 | 2015-09-09 | 赛多利斯史泰迪生物技术有限责任公司 | Apparatus for measuring flow in hose and/or plastic pipe systems |
| CN209927194U (en) * | 2019-05-24 | 2020-01-10 | 江苏鑫华禹测控技术有限公司 | High-precision electromagnetic water meter |
-
2019
- 2019-05-24 CN CN201910438582.4A patent/CN110081940A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050193833A1 (en) * | 2003-10-10 | 2005-09-08 | Abb Patent Gmbh | Magnetic-inductive measuring device for flowing substances and method for its production |
| CN101883966A (en) * | 2007-12-05 | 2010-11-10 | 恩德斯+豪斯流量技术股份有限公司 | Electrode for a magnetic-inductive flow-rate meter |
| CN102538882A (en) * | 2012-01-16 | 2012-07-04 | 燕山大学 | Flowmeter sensor based on electromagnetic correlation method |
| CN104903685A (en) * | 2012-12-04 | 2015-09-09 | 赛多利斯史泰迪生物技术有限责任公司 | Apparatus for measuring flow in hose and/or plastic pipe systems |
| CN209927194U (en) * | 2019-05-24 | 2020-01-10 | 江苏鑫华禹测控技术有限公司 | High-precision electromagnetic water meter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116734934A (en) * | 2023-08-11 | 2023-09-12 | 德阳市新泰自动化仪表有限公司 | Compact electromagnetic flowmeter, installation method and flow measuring method |
| CN116734934B (en) * | 2023-08-11 | 2023-11-14 | 德阳市新泰自动化仪表有限公司 | Compact electromagnetic flowmeter, installation method and flow measuring method |
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