CN215114687U - Electromagnetic flowmeter capable of measuring low-conductivity liquid - Google Patents
Electromagnetic flowmeter capable of measuring low-conductivity liquid Download PDFInfo
- Publication number
- CN215114687U CN215114687U CN202121531501.4U CN202121531501U CN215114687U CN 215114687 U CN215114687 U CN 215114687U CN 202121531501 U CN202121531501 U CN 202121531501U CN 215114687 U CN215114687 U CN 215114687U
- Authority
- CN
- China
- Prior art keywords
- section
- electromagnetic flowmeter
- measuring
- pipeline
- low conductivity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses an electromagnetic flowmeter of measurable low conductivity liquid, include: the measuring device comprises a pipe body, a signal amplifier and a signal processing converter, wherein a pipeline is arranged inside the pipe body, an insulating lining is arranged on the inner wall of the pipeline, the pipeline comprises a gradually-reducing section, a straight pipe section and a gradually-expanding section which are sequentially arranged, an upper coil and a lower coil which are symmetrically arranged are arranged on the outer wall of the straight pipe section, measuring electrodes which are symmetrically arranged are further arranged on the side wall of the straight pipe section, the measuring electrodes are connected with the signal amplifier through a first signal line, and the signal amplifier is connected with the signal processing converter through a second signal line. The utility model discloses compare in prior art, through the inside reducing pipeline of body and signal amplifier's setting, effectively improve the measurement accuracy of electromagnetic flowmeter to low conductivity liquid.
Description
Technical Field
The utility model belongs to the electromagnetic flowmeter field especially relates to an electromagnetic flowmeter of measurable low conductivity liquid.
Background
The electromagnetic flowmeter measures the flow of conducting fluid based on the electromotive force induced when the conducting fluid passes through external magnetic field by means of electromagnetic induction principle. The working principle of the electromagnetic flowmeter is based on the Faraday's law of electromagnetic induction, that is, when a conductive liquid moves in a pipeline at a certain flow speed, the fluid flows through a magnetic field perpendicular to the flow direction, the fluid cuts magnetic lines of force, and an induced electric potential proportional to the flow speed is generated between induction electrodes.
When the existing electromagnetic flowmeter is used for measuring low-conductivity liquids such as pure water, ultrapure water, desalted water and the like, the accuracy of a measuring result is poor because the induced electromotive force generated by cutting magnetic lines by fluid is very weak.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the electromagnetic flowmeter capable of measuring the liquid with low conductivity is provided, and the accuracy of measuring the liquid with low conductivity by the electromagnetic flowmeter is effectively improved through the arrangement of the reducing pipeline inside the pipe body and the signal amplifier.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an electromagnetic flow meter for measuring liquids of low conductivity comprising: the measuring device comprises a pipe body, a signal amplifier and a signal processing converter, wherein a pipeline is arranged inside the pipe body, an insulating lining is arranged on the inner wall of the pipeline, the pipeline comprises a gradually-reducing section, a straight pipe section and a gradually-expanding section which are sequentially arranged, an upper coil and a lower coil which are symmetrically arranged are arranged on the outer wall of the straight pipe section, measuring electrodes which are symmetrically arranged are further arranged on the side wall of the straight pipe section, the measuring electrodes are connected with the signal amplifier through a first signal line, and the signal amplifier is connected with the signal processing converter through a second signal line.
As a further description of the above technical solution:
the tapered section and the gradually expanding section are symmetrically arranged on two sides of the straight pipe section.
As a further description of the above technical solution:
the pipe body is also provided with a temperature sensor, and the end part of the temperature sensor extends into the pipeline.
As a further description of the above technical solution:
the two ends of the pipe body are provided with flange plates which are symmetrically arranged.
As a further description of the above technical solution:
the insulating lining is made of polytetrafluoroethylene.
As a further description of the above technical solution:
the signal processing converter is also provided with a display screen.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses in, the body passes through the flange dish that both ends set up and connects the pipeline of low conductivity liquid, when low conductivity liquid flows to the straight tube section of pipeline, because last coil and lower coil form the magnetic field in the straight tube section, the fluid cuts the magnetic line of force when flowing through, produce the electromotive force in the straight tube section, measuring electrode transmits the data that detect for signal amplifier through first signal line earlier, signal amplifier carries out effectual amplification to weak flow signal, and give the signal processing converter through the second signal line transmission. Because the low-conductivity liquid is guided by the tapered section before entering the straight pipe section, the lower flow measurement limit can be reduced, and the signal amplifier effectively amplifies weak flow signals, so that the measurement accuracy of the flowmeter on the low-conductivity liquid is effectively improved.
2. The utility model discloses in, for the convenience of realizing the temperature monitoring of low conductivity liquid, richen electromagnetic flowmeter's function, still be provided with temperature sensor on the body, temperature sensor passes through signal transmission line and connects the signal processing converter, and the temperature data who records can show through the display screen on the signal processing converter.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of an electromagnetic flowmeter for measuring liquids with low conductivity.
FIG. 2 is a schematic diagram of a straight pipe section of an electromagnetic flowmeter for measuring liquids of low conductivity.
Illustration of the drawings:
1. a pipe body; 11. a pipeline; 111. a tapered section; 112. a straight pipe section; 113. a gradual expansion section; 2. a signal amplifier; 3. a signal processing converter; 31. a display screen; 4. an insulating liner; 5. an upper coil; 6. a lower coil; 7. a measuring electrode; 8. a temperature sensor; 9. a flange plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: an electromagnetic flow meter for measuring liquids of low conductivity comprising: the pipe body 1, the signal amplifier 2 and the signal processing converter 3, the inside pipeline 11 that is provided with of pipe body 1, be provided with insulating lining 4 on the inner wall of pipeline 11, pipeline 11 is including the convergent section 111, straight tube section 112 and the divergent section 113 that arrange in proper order, set up symmetrical arrangement's last coil 5 and lower coil 6 on the outer wall of straight tube section 112, still be provided with symmetrical arrangement's measuring electrode 7 on the lateral wall of straight tube section 112, measuring electrode 7 passes through first signal line connection signal amplifier 2, signal amplifier 2 passes through second signal line connection signal processing converter 3.
The tapered section 111 and the diverging section 113 are symmetrically arranged on both sides of the straight pipe section 112.
Still be provided with temperature sensor 8 on body 1, in 8 tip of temperature sensor stretched into pipeline 11, richened electromagnetic flowmeter's function.
The two ends of the pipe body 1 are provided with flange plates 9 which are symmetrically arranged and firmly connected with a conveying pipeline of low-conductivity liquid.
The insulating lining 4 is made of polytetrafluoroethylene, so that the insulating effect and the accuracy of a measuring result are ensured.
The signal processing converter 3 is further provided with a display screen 31 for displaying the measured flow data and temperature data, so as to facilitate reading.
The working principle is as follows: the pipe body is connected with a conveying pipeline of low-conductivity liquid through flange plates arranged at two ends, when the low-conductivity liquid flows to a straight pipe section of the pipeline, a magnetic field is formed in the straight pipe section by an upper coil and a lower coil, when the fluid flows, magnetic lines of force are cut, electromotive force is generated in the straight pipe section, detected data are transmitted to a signal amplifier through a first signal wire by a measuring electrode, the signal amplifier effectively amplifies weak flow signals and transmits the weak flow signals to a signal processing converter through a second signal wire. Because the low-conductivity liquid is guided by the tapered section before entering the straight pipe section, the lower flow measurement limit can be reduced, and the signal amplifier effectively amplifies weak flow signals, so that the measurement accuracy of the flowmeter on the low-conductivity liquid is effectively improved. In order to facilitate the temperature monitoring of the liquid with low conductivity, the function of the electromagnetic flowmeter is enriched, a temperature sensor is further arranged on the pipe body and is connected with a signal processing converter through a signal transmission line, and the measured temperature data can be displayed through a display screen on the signal processing converter.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. An electromagnetic flowmeter for measuring liquids of low conductivity, comprising: body (1), signal amplifier (2) and signal processing converter (3), body (1) inside is provided with pipeline (11), is provided with insulating lining (4) on the inner wall of pipeline (11), pipeline (11) are including convergent section (111), straight tube section (112) and the section (113) that gradually expands that arrange in proper order, set up last coil (5) and lower coil (6) of symmetrical arrangement on the outer wall of straight tube section (112), still be provided with symmetrical arrangement's measuring electrode (7) on the lateral wall of straight tube section (112), measuring electrode (7) are connected through first signal line signal amplifier (2), signal amplifier (2) are connected through the second signal line signal processing converter (3).
2. The electromagnetic flowmeter for measuring liquids with low conductivity as claimed in claim 1, wherein said tapered section (111) and said diverging section (113) are symmetrically arranged on both sides of said straight pipe section (112).
3. An electromagnetic flowmeter for measuring a liquid with low conductivity as claimed in claim 1, wherein said tubular body (1) is further provided with a temperature sensor (8), and the end of said temperature sensor (8) is inserted into said conduit (11).
4. An electromagnetic flowmeter for measuring liquids with low conductivity as claimed in claim 1, characterized in that said tubular body (1) is provided at both ends with symmetrically arranged flanges (9).
5. The electromagnetic flowmeter for measuring liquid with low conductivity as set forth in claim 1, wherein said insulating lining (4) is made of teflon.
6. An electromagnetic flowmeter for measuring liquids with low conductivity as claimed in claim 1, characterized in that said signal processing transducer (3) is further provided with a display screen (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121531501.4U CN215114687U (en) | 2021-07-06 | 2021-07-06 | Electromagnetic flowmeter capable of measuring low-conductivity liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121531501.4U CN215114687U (en) | 2021-07-06 | 2021-07-06 | Electromagnetic flowmeter capable of measuring low-conductivity liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215114687U true CN215114687U (en) | 2021-12-10 |
Family
ID=79314091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121531501.4U Active CN215114687U (en) | 2021-07-06 | 2021-07-06 | Electromagnetic flowmeter capable of measuring low-conductivity liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215114687U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623887A (en) * | 2022-04-11 | 2022-06-14 | 江苏美安特科技有限公司 | Novel electromagnetic flowmeter |
| 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 |
-
2021
- 2021-07-06 CN CN202121531501.4U patent/CN215114687U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623887A (en) * | 2022-04-11 | 2022-06-14 | 江苏美安特科技有限公司 | Novel electromagnetic flowmeter |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215114687U (en) | Electromagnetic flowmeter capable of measuring low-conductivity liquid | |
| CN100375891C (en) | Electromagnetic flow sensor for measuring non-full pipe flow and method for measurement | |
| CN101545795A (en) | Fluent metal electrical flow meter | |
| JP2007147631A (en) | Insertion type electromagnetic flow rate meter | |
| CN104007287A (en) | Pipeline fluid flow speed detection method based on ultrasonic waves | |
| CN104019860A (en) | Flowmeter integrating electromagnetism and ultrasonic and use method of flowmeter | |
| CN102445245B (en) | Flow rate measurement device based on bridge-type flow rate measurement and electromagnetic flow rate measurement | |
| CN100387940C (en) | Electromagnetic flow sensor of non-insulated measuring pipe | |
| CN207894462U (en) | A kind of wide-range compares electromagnetic flow transducer | |
| CN104458108A (en) | Method for measuring pressure drop of liquid metal pipe flow magnetic fluid under high-intensity magnetic field | |
| CN2839978Y (en) | Vortex type electromagnetic flowmeter | |
| CN209857977U (en) | Be applied to not full pipe metering device of open channel low discharge, high velocity of flow | |
| CN205655874U (en) | Pipe wall differential pressure formula vortex flowmeter | |
| JP3953826B2 (en) | Insertion type electromagnetic current meter | |
| CN209197813U (en) | A kind of Novel down-hole internal magnet type electromagnetic flowmeter sensor magnetic structure | |
| CN207662471U (en) | A kind of damping type vortex-shedding meter | |
| RU127905U1 (en) | FLUID METER FLOW METER | |
| CN202582616U (en) | Integrated intelligent Verabar flow meter | |
| CN205607908U (en) | Four -section distributed conductivity sensor for two -phase flow detection | |
| CN211085384U (en) | Flow guiding pipe fitting for electromagnetic water meter sensing | |
| CN210268758U (en) | Electromagnetic flowmeter for water meter | |
| CN211626574U (en) | Ultrasonic open channel flowmeter | |
| CN220794326U (en) | Electromagnetic flowmeter with protection machanism | |
| CN216116174U (en) | Non-full pipe electromagnetic flowmeter | |
| CN208043146U (en) | A kind of high temperature high voltage resistant electromagnetic flow transducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |