CN117589250A - Electromagnetic flowmeter structure of low-power consumption - Google Patents
Electromagnetic flowmeter structure of low-power consumption Download PDFInfo
- Publication number
- CN117589250A CN117589250A CN202311672452.XA CN202311672452A CN117589250A CN 117589250 A CN117589250 A CN 117589250A CN 202311672452 A CN202311672452 A CN 202311672452A CN 117589250 A CN117589250 A CN 117589250A
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- China
- Prior art keywords
- iron core
- electromagnetic flowmeter
- power consumption
- laminated
- excitation
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Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 52
- 230000005284 excitation Effects 0.000 claims abstract description 42
- 229910000889 permalloy Inorganic materials 0.000 claims abstract description 16
- 238000003475 lamination Methods 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 9
- 206010066054 Dysmorphism Diseases 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 4
- 238000013500 data storage Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 230000035699 permeability Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- G01F1/586—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 coils, magnetic circuits, accessories therefor
-
- 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
- G01F1/588—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 combined constructions of electrodes, coils or magnetic circuits, accessories therefor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0075—Magnetic shielding materials
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides a low-power consumption electromagnetic flowmeter structure, which comprises a laminated I-shaped iron core and an excitation coil, wherein the laminated I-shaped iron core is integrally provided with an I-shaped permalloy iron core, the laminated I-shaped iron core is symmetrically arranged at the top and the bottom of a special-shaped measuring pipeline, the special-shaped measuring pipeline is integrally in a gradual rectangular structure, the excitation coil is wound on the surface of the laminated I-shaped iron core, and the excitation coil is connected with an external battery power supply circuit.
Description
Technical Field
The invention relates to the field of electromagnetic flow meters, in particular to a low-power-consumption electromagnetic flow meter structure.
Background
The magnetic flowmeter is a common flow detection device for detecting acid, alkali, salt solution, water, sewage, corrosive liquid, slurry, ore pulp, paper pulp and the like with the conductivity more than or equal to 5 mu s/cm in life, and performs flow measurement by utilizing Faraday electromagnetic induction law.
The existing exciting iron core structure of the traditional sensor is generally formed by winding a pair of circular exciting coils on a circular iron core made of soft iron, and then winding a plurality of silicon steel sheets into a whole. The excitation iron core structure manufactured by the scheme cannot form a uniform magnetic field, the magnetic permeability of soft iron and silicon steel is too low, the magnetic shielding effect is not obvious, and the magnetic field intensity generated when a low-power-consumption circuit supplies power is too low compared with the magnetic intensity generated by the traditional power supply mode. Therefore, the iron core with the excitation structure manufactured in the prior art has obvious defects, and the excitation current is required to be increased to realize the precision measurement if the reasonable induced electromotive force is required to be achieved in the measurement process, but the power consumption generated in the process is too high, and the nonlinearity is serious.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the electromagnetic flowmeter structure with low power consumption so as to solve the problems in the background art.
In order to achieve the above object, the present invention is realized by the following technical scheme: the utility model provides a low-power consumption electromagnetic flowmeter structure, includes electromagnetic flowmeter structure body and dysmorphism measurement pipeline, electromagnetic flowmeter structure body includes lamination formula I shape iron core and exciting coil, the whole I shape permalloy iron core that adopts of lamination formula I shape iron core, lamination formula I shape iron core is installed at the top and the bottom of dysmorphism measurement pipeline with the form of symmetry, dysmorphism measurement pipeline is whole to be the gradual change rectangle structure, the surface winding of lamination formula I shape iron core has exciting coil, and exciting coil is connected with external battery power supply circuit.
Further, the laminated I-shaped iron core comprises a plurality of permalloy laminations, and rivet fixing openings are formed in the surfaces of the permalloy laminations.
Furthermore, each permalloy lamination on the laminated I-shaped iron core passes through the rivet fixing opening and then is combined and fixed, and the width of one end of the laminated I-shaped iron core, which is close to the special-shaped measuring pipeline, is the same as the drift diameter of the measured pipeline.
Furthermore, two groups of laminated I-shaped iron core excitation coils are arranged, the inner hole of each excitation coil is rectangular, and the two excitation coils are connected in series to form a whole.
Further, the exciting coil is wound at the middle section position of the laminated I-shaped iron core, the winding turns of the single coil in the exciting coil are uniformly increased, and the total number of the winding turns is not less than 350 turns.
Further, the battery power supply circuit comprises a power supply and low voltage detection module, a keyboard and display module, a signal amplification processing module, a sampling module, an excitation module and a data storage module.
Furthermore, the electromagnetic flowmeter structure further comprises a micro-power consumption MCU integrated chip machine, and the micro-power consumption MCU integrated chip machine generates an excitation signal through controlling an H bridge to load the excitation signal on the excitation coil to generate an alternating magnetic field.
Furthermore, a three-value low-frequency rectangular wave excitation mode is adopted in the excitation signal generation process.
The invention has the beneficial effects that:
1. the low-power consumption electromagnetic flowmeter structure overcomes the defects of low magnetic permeability and low magnetic induction intensity of the traditional excitation iron core structure under low current, effectively reduces power consumption under the condition of external battery power supply, and ensures sufficient measurement accuracy.
2. The electromagnetic flowmeter structure with low power consumption is manufactured into the integrated excitation iron core with the magnetic yoke by using the I-shaped permalloy lamination, compared with the iron core with the traditional material structure, the magnetic permeability is tens of times higher, the permalloy has lower coercive force and higher magnetic shielding effect, and the electromagnetic flowmeter structure can effectively improve the space magnetic field intensity and ensure the space uniform magnetic field characteristic by matching with the excitation coil structure with the rectangular inner hole.
Drawings
FIG. 1 is a front view of a low power consumption electromagnetic flowmeter structure of the present invention;
FIG. 2 is a schematic cross-sectional view of an excitation coil of the present invention;
FIG. 3 is a schematic view of an I-shaped core base lamination of the present invention;
fig. 4 is a diagram showing an up-down thickness increasing/decreasing lamination of the i-shaped iron core according to the present invention;
in the figure: 1. laminated I-shaped iron core; 2. a rivet fixing opening; 3. an exciting coil; 4. a special-shaped measuring pipeline; 5. an electrode.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides a low-power consumption electromagnetic flowmeter structure, including electromagnetic flowmeter structure body and dysmorphism measurement pipeline 4, electromagnetic flowmeter structure body is including lamination formula I shape iron core 1 and exciting coil 3, make into the integrated lamination formula I shape iron core 1 that has the yoke through I shape permalloy lamination, have the circular opening that is used for rivet fastening on the lamination formula I shape iron core 1, the winding has insulating exciting coil 3 on the lamination formula I shape iron core 1, and insulating exciting coil 3 symmetry is placed in the upside and downside of dysmorphism measurement pipeline 4, symmetrical electrode 5 has been inlayed to the both sides of dysmorphism measurement pipeline 4.
The integrated excitation iron core with the magnetic yoke is manufactured by using the I-shaped permalloy lamination, compared with the iron core with the traditional material structure, the magnetic permeability is tens of times higher, the permalloy has lower coercive force and higher magnetic shielding effect, and the magnetic field strength of the space can be effectively improved by matching with the structure of the excitation coil 3 with the rectangular inner hole, so that the uniform magnetic field characteristic of the space is ensured.
In this embodiment, a special-shaped measuring pipe 4 is provided, the special-shaped measuring pipe 4 is a rectangular measuring pipe with the height of 50mm and the height of 30mm, the stacking thickness of the bottom of the i-shaped iron core is 50mm, and the upward thickness is controlled between 5mm and 10 mm. The length of the part of the H-shaped middle winding insulating exciting coil 3 is controlled between 20mm and 25mm, and the stacking thickness is controlled between 10mm and 15 mm. The top end shape of the I-shaped laminated iron core is controlled to be between 10 and 20mm in stacking thickness, the rectangular length of the front view is controlled to be between 30 and 60mm, and the width of the front view is controlled to be between 10 and 30mm, as shown in figure 4. The laminated i-shaped iron core 1 in this embodiment is made of permalloy material.
In accordance with the above dimensions, a plurality of yoked permalloy laminations having a thickness of 1mm are punched out by a machine as shown in fig. 3 and 4, and a plurality of laminations are passed through the rivet fixing openings 2 in the drawing by 4 Φ1mm iron rivets according to the dimensions, forming a firm integrated laminated core. The exciting coil 3 is wound in the middle of the I-shaped iron core by using a machine, in the embodiment, the inner diameter of the exciting coil 3 is 0.8mm, the upper exciting coil 3 and the lower exciting coil 3 are connected in series, the number of turns of each layer is increased uniformly and the control number is the same, the number of turns is not less than 350, the inner hole is rectangular, and insulating cloth is wound. The manufactured iron cores are symmetrically fixed on the upper side and the lower side of the special-shaped measuring pipeline 4.
The insulated exciting coil 3 is connected with an external battery power supply circuit, and the external battery power supply circuit comprises a power supply and low voltage detection module, a keyboard and display module, a signal amplification processing module, a sampling module, an exciting module, a data storage module and the like, wherein the power supply is used for providing electric energy to generate a subsequent alternating magnetic field; the circuit and the monitoring process are controlled through the keyboard and the display module, and data output and display are carried out; the signal amplification processing module and the sampling module amplify and collect signals transmitted by the sensor, and the digital signals obtained after conversion are transmitted to the data storage module to realize the storage of monitoring data.
In the embodiment, a micro-power consumption MCU integrated chip is adopted to generate excitation signals through controlling an H bridge, the excitation signals are loaded on an excitation coil 3 of a sensor to generate alternating magnetic fields, analog signals generated by the sensor are amplified and then sent to a high-precision A/D converter, digital signals after A/D conversion are sent to an MCU to be subjected to data processing, instantaneous flow and accumulated flow are obtained through calculation, and result data of the instantaneous flow and the accumulated flow are stored, output and displayed. In the process of generating an excitation signal, a three-value low-frequency rectangular wave excitation mode is adopted, a reasonable sampling period is selected, excitation current is enabled to change according to a positive zero-negative zero-positive rule, the excitation current can have the characteristic of zero stabilization, and finally, the power consumption required by a system is reduced by setting two stages of excitation and dormancy.
Through the process, the electromagnetic flowmeter structure overcomes the defects of low magnetic permeability and low magnetic induction intensity of the traditional excitation iron core structure under low current, ensures that the excitation coil 3 provides a spatially uniform magnetic field characteristic, effectively reduces the power consumption under the condition of external battery power supply, and ensures the measurement accuracy.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. The utility model provides a low-power consumption electromagnetic flowmeter structure, includes electromagnetic flowmeter structure body and dysmorphism measurement pipe way (4), its characterized in that: the electromagnetic flowmeter structure body comprises a laminated I-shaped iron core (1) and an excitation coil (3), the laminated I-shaped iron core (1) is integrally formed by an I-shaped permalloy iron core, the laminated I-shaped iron core (1) is symmetrically arranged at the top and the bottom of a special-shaped measuring pipeline (4), the special-shaped measuring pipeline (4) is integrally of a gradual change rectangular structure, the excitation coil (3) is wound on the surface of the laminated I-shaped iron core (1), and the excitation coil (3) is connected with an external battery power supply circuit.
2. The low power consumption electromagnetic flowmeter structure of claim 1, wherein: the laminated I-shaped iron core (1) comprises a plurality of permalloy laminations, rivet fixing openings (2) are formed in the surfaces of the permalloy laminations, and electrodes (5) are symmetrically arranged on the side edges of the special-shaped measuring pipeline (4).
3. The low power consumption electromagnetic flowmeter structure of claim 2, wherein: each permalloy lamination on the laminated I-shaped iron core (1) is combined and fixed after passing through the rivet fixing opening (2) through a rivet, and the width of one end, close to the special-shaped measuring pipeline (4), of the laminated I-shaped iron core (1) is the same as the drift diameter of the measured pipeline.
4. The low power consumption electromagnetic flowmeter structure of claim 1, wherein: two groups of excitation coils (3) are arranged on the laminated I-shaped iron core (1), the inner hole of each excitation coil (3) is rectangular, and the two excitation coils (3) are connected in series to form a whole.
5. The low power consumption electromagnetic flowmeter structure of claim 4, wherein: the exciting coil (3) is wound at the middle section of the laminated I-shaped iron core (1), and the winding number of single coil in the exciting coil (3) is uniformly increased and the total number of the single coil winding turns is not less than 350 turns.
6. The low power consumption electromagnetic flowmeter structure of claim 1, wherein: the battery power supply circuit comprises a power supply and low voltage detection module, a keyboard and display module, a signal amplification processing module, a sampling module, an excitation module and a data storage module.
7. The low power consumption electromagnetic flowmeter structure of claim 6, wherein: the electromagnetic flowmeter structure further comprises a micro-power consumption MCU integrated chip machine, and the micro-power consumption MCU integrated chip machine generates an excitation signal through controlling an H bridge to load on the excitation coil (3) to generate an alternating magnetic field.
8. The low power consumption electromagnetic flowmeter structure of claim 7, wherein: and a three-value low-frequency rectangular wave excitation mode is adopted in the excitation signal generation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311672452.XA CN117589250A (en) | 2023-12-07 | 2023-12-07 | Electromagnetic flowmeter structure of low-power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311672452.XA CN117589250A (en) | 2023-12-07 | 2023-12-07 | Electromagnetic flowmeter structure of low-power consumption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117589250A true CN117589250A (en) | 2024-02-23 |
Family
ID=89911434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311672452.XA Pending CN117589250A (en) | 2023-12-07 | 2023-12-07 | Electromagnetic flowmeter structure of low-power consumption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117589250A (en) |
-
2023
- 2023-12-07 CN CN202311672452.XA patent/CN117589250A/en active Pending
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