CN112268586B - Intelligent electromagnetic flowmeter for measuring slurry and measuring method thereof - Google Patents
Intelligent electromagnetic flowmeter for measuring slurry and measuring method thereof Download PDFInfo
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- CN112268586B CN112268586B CN202011222990.5A CN202011222990A CN112268586B CN 112268586 B CN112268586 B CN 112268586B CN 202011222990 A CN202011222990 A CN 202011222990A CN 112268586 B CN112268586 B CN 112268586B
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- 239000002002 slurry Substances 0.000 title claims description 20
- 238000000034 method Methods 0.000 title abstract description 11
- 230000005284 excitation Effects 0.000 claims abstract description 28
- 238000005259 measurement Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000005406 washing Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
The application discloses intelligent electromagnetic flowmeter of measurement thick liquid and measuring method thereof, the flowmeter includes controller and measurement pipeline, is provided with flange in the both sides of measurement pipeline, still is provided with paired electrode and arranges the solenoid at measurement pipeline surface on measurement pipeline, is provided with the inside lining on measurement pipeline's inner wall, is provided with the fixed part with inside lining integrated into one piece in the both sides of inside lining, and fixed part is fixed with flange. The measuring method comprises the steps that the micro-processing signals to the excitation output module to generate excitation signals, and the excitation signals are loaded on the electromagnetic coil; the exciting signal loaded on the electromagnetic coil is used for measuring the flow to obtain a corresponding current signal; the current signal is amplified, filtered and AD converted, then is sent to a microprocessor for processing, corresponding data is obtained through calculation, and is sent to a display module for display. The utility model discloses a fixed part is fixed with flange through, has guaranteed that the installation of inside lining is firm, prevents that the inside lining from washing away at the in-process inside lining that thick liquid erodees.
Description
Technical Field
The application relates to the technical field of flowmeters, in particular to an intelligent electromagnetic flowmeter for measuring slurry and a measuring method thereof.
Background
Electromagnetic flowmeters are devices that measure flow according to faraday's law of electromagnetic induction, and are widely used in industrial processes. The flow rate of the fluid in the pipeline is calculated by measuring the induced electromotive force generated on the electrodes at two sides of the measuring conduit when the fluid makes cutting magnetic induction line movement in the magnetic field, so as to determine the flow rate.
However, in some fields, such as papermaking, pulp, slurry and other industries, the electromagnetic flowmeter has the problems of large impact and abrasion on a measuring pipeline of the electromagnetic flowmeter due to the influence of working conditions such as solid-liquid two phases of a measured medium, large variation of the density of the medium, large flow and the like, and the service life of the electromagnetic flowmeter is influenced.
Disclosure of Invention
The utility model provides an in order to alleviate above-mentioned thick liquid and cause great impact and the problem of wearing and tearing to measuring the pipeline when measuring, this application provides an intelligent electromagnetic flowmeter of measurement thick liquid and measuring method thereof.
In a first aspect, the present application provides an intelligent electromagnetic flowmeter for measuring slurry, which adopts the following technical scheme:
the utility model provides an intelligent electromagnetic flowmeter of measurement thick liquid, includes controller and measurement pipeline, is provided with flange in the both sides of measurement pipeline still be provided with paired electrode and arrange the electromagnetic coil at the measurement pipeline surface on the measurement pipeline's inner wall on be provided with the inside lining the both sides of inside lining be provided with inside lining integrated into one piece's fixed part, fixed part with flange fix.
Through above-mentioned technical scheme, through set up the inside lining in measuring the pipeline, can play the guard action to measuring the pipeline well, can prevent effectively that measuring the pipeline from being worn and torn, corruption, improved measuring the life of pipeline, simultaneously through being provided with integrated into one piece's fixed part with the both sides of inside lining, fixed through fixed part and flange, guaranteed that the installation of inside lining is firm, prevent the inside lining at the in-process inside lining that thick liquid erodees drop.
Optionally, the inside lining is two segmentation structures, including first inside lining and second inside lining, adopts the structure of grafting connection between first inside lining and the second inside lining to first inside lining be provided with first draw-in groove, be provided with the second draw-in groove on the second inside lining, first inside lining and second inside lining are pegged graft the back, and first draw-in groove constitutes the electrode draw-in groove with the second draw-in groove, with the electrode card income in the electrode draw-in groove.
Through above-mentioned technical scheme, through setting up the inside lining into two parts, pack into in the measurement pipeline after splicing through first inside lining and second inside lining grafting, mode simple to operate is convenient for the postloading of inside lining like this.
Optionally, the end of the connecting flange is provided with a fixing groove, and the fixing part is arranged in the fixing groove and is fixed with the connecting flange through a screw.
Through above-mentioned technical scheme, through setting up the fixed slot at flange's tip, set up fixed part in the fixed slot to through fixed with flange through locking screw in the fixed slot, such mode makes fixed part and flange fixed firm on the one hand, has prevented the coming off of inside lining, and on the other hand passes through locking screw through the fixed part of both sides, and locking force is exerted to the middle direction of measuring pipeline, and the connection firm between first inside lining, the second inside lining has been guaranteed to such mode, and has improved the leakproofness between first inside lining and the second inside lining.
Optionally, the fixing part is a conical structure, and the diameter of the conical structure at the middle position far away from the measuring pipeline is smaller than that of the conical structure at the middle position close to the measuring pipeline.
Through above-mentioned technical scheme, when thick liquid flows into between fixed part and the flange, thick liquid can flow out through the toper structure of fixed part, can not appear thick liquid and remain between fixed part and the flange, causes the condition of backlog and even jam measurement pipeline.
Optionally, the inner liner and the fixing part are made of polytetrafluoroethylene.
Through above-mentioned technical scheme, make inside lining and fixed part all adopt polytetrafluoroethylene, polytetrafluoroethylene corrosion resistance is strong, has good wearability simultaneously, and application range is wide, can adapt to corrosive medium such as dense acid, dense alkali, also can resist the erosive wear of thick liquid, has guaranteed electromagnetic flowmeter's life.
Optionally, a protecting shell is arranged on the measuring pipeline, the electromagnetic coil is arranged between the protecting shell and the outer surface of the measuring pipeline, and the inner surface of the protecting shell is covered with a magnetic field shielding layer; and a heat insulation layer is arranged on the periphery of the measuring pipeline between the protective shell and the connecting flange.
Through above-mentioned technical scheme, through setting up the protecting crust, when guaranteeing high strength, can protect electrode and solenoid's installation stability well, set up the magnetic field shielding layer and then be in order to shield the interference of external magnetic field to solenoid, effectively guaranteed electromagnetic flowmeter's measurement accuracy.
Optionally, the controller comprises a microprocessor, a signal processing module, a power module, a display module and an excitation output module; the electrode is connected with the microprocessor through the signal processing module, and a current signal generated by measuring the flow in the pipe fitting and cutting magnetic force lines is sent to the microprocessor through the signal processing module; the microprocessor is connected with the display module, and sends the calculated flow data to the display module for display; the excitation output module is connected with the electromagnetic coil and is used for loading excitation signals to the electromagnetic coil; the power module is connected with the microprocessor and supplies power for each module of the controller.
Through the technical scheme, exciting current is provided for the electromagnetic coil through the excitation output module, current generated by cutting magnetic force lines by the flow in the measuring pipe fitting is sent into the microprocessor after being processed by the signal processing module through the electrode, flow data is obtained through measurement, and the flow data is displayed through the display module.
Optionally, the signal processing module includes an amplifying circuit, a filtering circuit and an AD conversion circuit, and the current signal is sent to the microprocessor sequentially through the amplifying circuit, the filtering circuit and the AD conversion circuit.
According to the technical scheme, the weak signals obtained by measuring the slurry are amplified through the amplifying circuit, and the amplified signals are filtered through the filtering circuit, so that the influence of interference noise is reduced, and the measuring precision is improved.
Optionally, the controller further includes a wireless transceiver module and an antenna, and the antenna is connected with the microprocessor through the wireless transceiver module.
Through above-mentioned technical scheme, through setting up wireless transceiver module and antenna, can pass through wireless transceiver module with the signal and transmit to the remote terminal on, can long-range data of looking over the flow, improved electromagnetic flowmeter's application range.
In a second aspect, the present application further provides an intelligent electromagnetic flowmeter for measuring slurry, which adopts the following technical scheme:
a method of measuring an intelligent electromagnetic flowmeter for measuring slurry, comprising the steps of:
(1) When fluid passes through the measuring pipeline, the micro-processing signals the excitation output module to generate excitation signals, and the excitation signals are loaded on the electromagnetic coil;
(2) Measuring the flow by the excitation signal loaded on the electromagnetic coil to obtain a corresponding current signal;
(3) The current signal is amplified, filtered and AD converted, then is sent to a microprocessor for processing, corresponding data is obtained through calculation, and is sent to a display module for display.
Through the technical scheme, the excitation output module provides exciting current for the electromagnetic coil, current generated by cutting magnetic lines of force by flow in the measuring pipe is processed by the electrode and the signal processing module, weak signals obtained by measuring slurry are amplified by the amplifying circuit, the amplified signals are filtered by the filtering circuit, the influence of interference noise is reduced, analog signals are converted into digital signals by the AD conversion circuit, then the digital signals are sent into the microprocessor to be measured to obtain flow data, and the flow data are displayed by the display module, so that the measuring precision can be effectively improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the lining, the lining is arranged in the measuring pipeline, so that the measuring pipeline can be well protected, the measuring pipeline can be effectively prevented from being worn and corroded, the service life of the measuring pipeline is prolonged, and meanwhile, the lining is firmly installed through the fixing parts and the connecting flange by arranging the fixing parts which are integrally formed on the two sides of the lining, and the lining is prevented from falling off in the slurry flushing process;
2. the lining is arranged into two parts, and the first lining and the second lining are spliced and then are arranged in the measuring pipeline, so that the mode is convenient to install; the fixing groove is formed in the end part of the connecting flange, the fixing part is arranged in the fixing groove and is fixed with the connecting flange through the locking screw, so that the fixing part and the connecting flange are firmly fixed on one hand, the lining is prevented from falling off, and the locking force is applied to the middle direction of the pipeline through the fixing parts on the two sides through the locking screw on the other hand, the firm connection between the first lining and the second lining is ensured, and the tightness between the first lining and the second lining is improved;
3. the weak signals obtained by measuring the slurry are amplified through the amplifying circuit, and the amplified signals are filtered through the filtering circuit, so that the influence of interference noise is reduced, and the measuring precision is improved;
4. through setting up wireless transceiver module and antenna, can pass through wireless transceiver module with the signal and transmit to the remote terminal on, can long-range data of looking over the flow, improved electromagnetic flowmeter's application range.
Drawings
Fig. 1 is a schematic structural view in an embodiment of the present application.
FIG. 2 is a schematic diagram of the structure of FIG. 1 with the protective shell removed.
Fig. 3 is a schematic view of a structure used to embody the inside of a measuring pipe according to an embodiment of the present application.
Fig. 4 is a schematic structural view of a liner according to an embodiment of the present application.
Fig. 5 is a partial enlarged view of fig. 4 of the present application.
Fig. 6 is a schematic diagram of an internal structure of the controller according to the embodiment of the present application.
Fig. 7 is a circuit block diagram of a controller of an embodiment of the present application.
Reference numerals illustrate, 1, a controller; 2. measuring a pipeline; 3. a connecting flange; 4. an electrode; 5. an electromagnetic coil; 6. a lining; 7. a fixing part; 8. an electrode clamping groove; 9. a protective shell; 10. a thermal insulation layer; 101. a first housing; 102. a second housing; 103. a seal ring; 104. a control circuit board; 105. an antenna; 106. a lithium battery; 107. binding posts; 301 fixing the groove, 601 and the first lining; 602. a second liner; 603. inserting plate; 604. a slot; 801. a first clamping groove; 802. a second clamping groove; 803. a guide groove; 901. a magnetic field shielding layer.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-7.
Referring to fig. 1 and 2, the embodiment of the application discloses an intelligent electromagnetic flowmeter for measuring slurry, which comprises a controller 1 and a measuring pipeline 2, wherein connecting flanges 3 are arranged on two sides of the measuring pipeline 2, a pair of electrodes 4 and an electromagnetic coil 5 arranged on the outer surface of the measuring pipeline 2 are further arranged on the measuring pipeline 2, the electromagnetic coil 5 is connected with the controller 1, and the controller 1 is used for sending an excitation signal and is loaded on the electromagnetic coil 5.
Referring to fig. 2 and 3, a protective casing 9 is disposed on the measuring pipe 2, the electromagnetic coil 5 is disposed in the protective casing 9 and distributed on the outer surface of the measuring pipe 2, and the inner surface of the protective casing 9 is covered with a magnetic field shielding layer 901. The protective housing 9 is made of stainless steel metal material, and has high strength, and the controller 1 is mounted on the protective housing 9. The magnetic field shielding layer 901 can shield the interference of the external magnetic field to the electromagnetic coil 5, and effectively ensures the measurement accuracy of the electromagnetic flowmeter.
The outer periphery of the measuring pipeline 2 between the protective shell 9 and the connecting flange 3 is provided with a heat insulation layer 10, and the heat insulation layer 10 is arranged to play a certain role in preserving heat for the fluid in the measuring pipeline 2 and reduce heat loss; on the other hand, the heat insulation effect is achieved on the measuring pipeline 2, the temperature of the outer surface of the heat insulation layer 10 is reduced, and scalding accidents are avoided.
Referring to fig. 3 and 4, a lining 6 is disposed on the inner wall of the measurement pipe 2, the lining 6 is of a two-section structure, and includes a first lining 601 and a second lining 602, an annular insert plate 603 is disposed at one end of the first lining 601 connected with the second lining 602, an annular insert slot 604 is disposed at one end of the second lining 602 connected with the first lining 601, and the first lining 601 can be inserted into the insert slot 604 through the insert plate 603, so as to complete connection between the first lining 601 and the second lining 602. The insert plate 603 and the insert groove 604 are in interference fit, so that good sealing performance of a joint between the first lining 601 and the second lining 602 is guaranteed, and leakage is not easy to occur.
Referring to fig. 4 and 5, since the electrode 4 is protruded into the measuring tube 2 and the electrode 4 is required to be protruded into the inner liner 6, a first clamping groove 801 is formed on the first inner liner 601, and a guide groove 803 communicating with the first clamping groove 801 is formed on the insert plate 603; the second liner 602 is provided with a second clamping groove 802, the first clamping groove 801 has a semicircular structure, and the second clamping groove 802 also has a semicircular structure. After the first liner 601 and the second liner 602 are inserted, the first clamping groove 801 and the second clamping groove 802 form an electrode clamping groove 8, and the electrode 4 is clamped in the electrode clamping groove 8.
Referring to fig. 3 and 4, an integrally formed fixing portion 7 is disposed at an end of the first liner 601 far from the second liner 602, an integrally formed fixing portion 7 is disposed at an end of the second liner 602 far from the first liner 601, the fixing portion 7 is of a tapered structure, and a diameter of the tapered structure far from a middle position of the measuring pipeline 2 is smaller than a diameter of the tapered structure near the middle position of the measuring pipeline 2. The fixing part 7 is fixed with the connecting flange 3, and the specific fixing structure is as follows: a fixing groove 301 is provided at an end of the connection flange 3, and the fixing portion 7 is provided in the fixing groove 301 and is fixed to the connection flange 3 by a screw 11. In this embodiment, the first liner 601, the second liner 602, and the fixing portion 7 are made of polytetrafluoroethylene.
The fixing parts 7 on two sides apply locking force to the middle direction of the measuring pipeline 2 through the locking screws 11, so that the connection between the first lining 601 and the second lining 602 is firm, the tightness between the first lining 601 and the second lining 602 is improved, and the tightness between the electrode 4 and the electrode clamping groove 8 is also ensured. Of course, in order to further improve the sealability between the first liner 601 and the second liner 602 and the sealability between the electrode 4 and the electrode clamping groove 8, a sealant may be provided at the joint between the first liner 601 and the second liner 602, and a sealant may be provided between the electrode 4 and the electrode clamping groove 8.
Referring to fig. 1 and 6, the controller 1 includes a first housing 101, a second housing 102, and a seal ring 103 disposed between the first housing 101 and the second housing 102 by screw connection between the first housing 101 and the second housing 102. A control circuit board 104 is provided in the first housing 101, an antenna 105 is provided outside the first housing 101, a lithium battery 106 is provided in the second housing 102, and a terminal 107 is provided outside the second housing 102.
Referring to fig. 7, the control circuit board 104 includes a microprocessor, a signal processing module, an excitation output module, a power driving module, a wireless transceiver module, and a display driving module.
The microprocessor is connected with the electromagnetic coil through an excitation output module and is used for loading excitation signals to the electromagnetic coil, and the excitation output module comprises an excitation signal generating circuit and an excitation signal amplifying circuit; the power module is connected with the microprocessor and supplies power for each module of the controller, and the power module comprises a lithium battery and mains supply.
The electrode 4 is connected with the microprocessor through a signal processing module, the signal processing module comprises an amplifying circuit, a filtering circuit and an AD conversion circuit, and a current signal generated by cutting magnetic lines of force flowing in the measuring pipeline 2 is sequentially amplified by the amplifying circuit, filtered by the filtering circuit and subjected to analog-digital conversion by the AD conversion circuit and then is sent to the microprocessor for processing. The microprocessor is connected with the display 108 through a display driving circuit, and sends the calculated flow data to the display 108 for display. The microprocessor also transmits data to a server or remote terminal via the wireless transceiver module and antenna.
In this embodiment, the microprocessor uses MSP430 single-chip microcomputer of TI company, the AD conversion circuit uses TLC548 of TI company, and the wireless transceiver module uses nRF24l01 wireless transceiver module.
The embodiment also discloses a measuring method of the intelligent electromagnetic flowmeter for measuring the slurry, which comprises the following steps:
(1) When fluid passes through the measuring pipeline 2, the micro-processing signals the excitation output module to generate excitation signals, and the excitation signals are loaded on the electromagnetic coil 5;
(2) The exciting signal loaded on the electromagnetic coil 5 is used for measuring the flow to obtain a corresponding current signal;
(3) Amplifying, filtering and AD converting the current signals, sending the amplified and filtered current signals to a microprocessor for processing, calculating to obtain corresponding data, and sending the corresponding data to a display module for display;
(4) The microprocessor transmits the data to the server or the remote terminal through the wireless transceiver module and the antenna.
The implementation principle of the embodiment of the application is as follows:
first, first liner 601 and second liner 602 are inserted into measuring channel 2, and when first liner 601 and second liner 602 are inserted, guide groove 803 on insert plate 603 on first liner 601 is aligned with electrode 4 extending into measuring channel 2, electrode 4 is guided into first clamping groove 801 through guide groove 803, then second liner 602 is inserted into measuring channel 2, and inserted into insert plate 603 of first liner 601 through insert groove 604 on second liner 602. Simultaneously, the second clamping groove 802 on the second liner 602 is clamped with the electrode 4, so that the electrode is clamped in through the first clamping groove 801 and the second clamping groove 802; then, the fixing part 7 and the connecting flange 3 are fixed by locking screws on the fixing part 7, so that the inner liner 6 of the flowmeter is installed, and the inner liner 6 is prevented from falling off by the installation mode. The flowmeter with the liner 6 attached is then attached to the pipe and secured to the pipe by the attachment flange 3.
After the flowmeter is fixed, a power supply is connected, then measurement is carried out, when fluid in the measurement pipeline 2 passes through, the micro-processing signals the excitation output module to generate excitation signals, and the excitation signals are loaded on the electromagnetic coil 5; the exciting signal loaded on the electromagnetic coil 5 is used for measuring the flow to obtain a corresponding current signal; the current signal is amplified, filtered and AD converted, then is sent to a microprocessor for processing, corresponding data is obtained through calculation, and is sent to a display module for display; the microprocessor transmits the data to the server or the remote terminal through the wireless transceiver module and the antenna.
The embodiments of the present invention are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The utility model provides an intelligent electromagnetic flowmeter of measurement thick liquid, includes controller (1) and measurement pipeline (2), is provided with flange (3) in the both sides of measurement pipeline (2) on still be provided with paired electrode (4) and arrange solenoid (5) at measurement pipeline (2) surface, its characterized in that: a lining (6) is arranged on the inner wall of the measuring pipeline (2), fixing parts (7) which are integrally formed with the lining are arranged on two sides of the lining (6), and the fixing parts (7) are fixed with the connecting flange (3);
the lining (6) is of a two-section structure and comprises a first lining (601) and a second lining (602), the first lining (601) and the second lining (602) are connected in a plugging mode, the first lining (601) is provided with a first clamping groove (801), the second lining (602) is provided with a second clamping groove (802), after the first lining (601) and the second lining (602) are plugged, the first clamping groove (801) and the second clamping groove (802) form an electrode clamping groove (8), and an electrode (4) is clamped in the electrode clamping groove (8).
2. An intelligent electromagnetic flowmeter for measuring slurry according to claim 1, wherein: the end part of the connecting flange (3) is provided with a fixing groove (301), and the fixing part (7) is arranged in the fixing groove (301) and is fixed with the connecting flange (3) through screws.
3. An intelligent electromagnetic flowmeter for measuring slurry according to claim 2, wherein: the fixing part (7) is of a conical structure, and the diameter of the conical structure at the middle position far away from the measuring pipeline (2) is smaller than that of the conical structure at the middle position close to the measuring pipeline (2).
4. An intelligent electromagnetic flowmeter for measuring slurry according to claim 1, wherein: the inner lining (6) and the fixing part (7) are made of polytetrafluoroethylene.
5. An intelligent electromagnetic flowmeter for measuring slurry according to claim 1, wherein: a protective shell (9) is arranged on the measuring pipeline (2), the electromagnetic coil (5) is arranged between the protective shell (9) and the outer surface of the measuring pipeline (2), and the inner surface of the protective shell (9) is covered with a magnetic field shielding layer (901); and a heat insulation layer (10) is arranged on the periphery of the measuring pipeline (2) between the protective shell (9) and the connecting flange (3).
6. An intelligent electromagnetic flowmeter for measuring slurry according to claim 1, wherein: the controller comprises a microprocessor, a signal processing module, a power module, a display module and an excitation output module; the electrode is connected with the microprocessor through the signal processing module, and sends a current signal generated by cutting magnetic force lines by measuring the flow in the pipeline into the microprocessor through the signal processing module; the microprocessor is connected with the display module, and sends the calculated flow data to the display module for display; the excitation output module is connected with the electromagnetic coil and is used for loading excitation signals to the electromagnetic coil; the power module is connected with the microprocessor and supplies power for each module of the controller.
7. An intelligent electromagnetic flowmeter for measuring slurry according to claim 6, wherein: the signal processing module comprises an amplifying circuit, a filtering circuit and an AD conversion circuit, and the current signal is sequentially sent into the microprocessor through the amplifying circuit, the filtering circuit and the AD conversion circuit.
8. An intelligent electromagnetic flowmeter for measuring slurry according to claim 7, wherein: the controller also comprises a wireless transceiver module and an antenna, wherein the antenna is connected with the microprocessor through the wireless transceiver module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011222990.5A CN112268586B (en) | 2020-11-05 | 2020-11-05 | Intelligent electromagnetic flowmeter for measuring slurry and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011222990.5A CN112268586B (en) | 2020-11-05 | 2020-11-05 | Intelligent electromagnetic flowmeter for measuring slurry and measuring method thereof |
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| CN112268586B true CN112268586B (en) | 2024-03-26 |
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| CN113069952A (en) * | 2021-05-13 | 2021-07-06 | 盾构及掘进技术国家重点实验室 | Mixing device for improving measurement precision of shield mud electromagnetic flowmeter |
| CN114408588A (en) * | 2021-12-31 | 2022-04-29 | 成都瑞柯林工程技术有限公司 | Pneumatic conveying detection method and detection equipment for particulate matters |
| CN116046096A (en) * | 2022-12-15 | 2023-05-02 | 中交疏浚技术装备国家工程研究中心有限公司 | Pipeline mud yield measuring method and implementation device thereof |
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