CN111829600B - Metering device and metering method for micro-upgrade flow - Google Patents
Metering device and metering method for micro-upgrade flow Download PDFInfo
- Publication number
- CN111829600B CN111829600B CN201910324671.6A CN201910324671A CN111829600B CN 111829600 B CN111829600 B CN 111829600B CN 201910324671 A CN201910324671 A CN 201910324671A CN 111829600 B CN111829600 B CN 111829600B
- Authority
- CN
- China
- Prior art keywords
- channel
- current
- fluid
- flow
- coil
- 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
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
Abstract
The application discloses metering device and metering method of little upgrading flow, and this metering device includes: the orifice plate comprises a fluid inlet, a fluid outlet and a transverse channel positioned between the fluid inlet and the fluid outlet, the fluid inlet and the transverse channel are connected through a main channel, a first side channel and a second side channel, and the transverse channel and the fluid outlet are connected through a third side channel and a fourth side channel; the magnetic induction device comprises a coil, a conductive circuit and a magnet, wherein the coil and the magnet are arranged in the transverse channel, one end of the conductive circuit is connected with the coil, and the other end of the conductive circuit is connected with the current detection circuit; the current detection circuit is used for detecting the magnitude of induced current generated in the conducting circuit and the frequency of change of the current direction; induced current is generated in the conductive path when the magnet is pushed by the fluid to reciprocate in the transverse passage in a direction perpendicular to the coil; and a calculation device for calculating the flow rate of the fluid according to the magnitude of the induced current and the frequency of the change in the direction of the current.
Description
Technical Field
The application relates to the technical field of flow measurement, in particular to a metering device and a metering method for micro-upgrade flow.
Background
Currently, the conventional metering method is still a measuring cylinder type device observation method of milliliter level and an electronic balance weighing method. The observation method of the measuring cylinder device is influenced by interface interference and the like, and the error of the observation method is always more than 0.2 ml; the electronic balance weighing method requires more accurate measurement of fluid density, and the measurement accuracy of different oil phases is not higher than that of a measuring cylinder.
Along with the gradual deepening of the development research of ultra-low permeability and ultra-low permeability oil reservoirs, the accurate measurement of the micro volume flow in the experiment shows more and more difficulty, and the conventional measurement method is difficult to meet the requirement on the measurement precision. In the core experiment, the fluid volume in a conventional core is reduced from about 6 milliliters (ml) to about 2ml, while the dead volume of the flow of the same experiment is not reduced, so the metering error is greatly increased. In addition, although the volume in the inlet and outlet lines required for calculating the volume of fluid in the core can be calculated and the volume of fluid in the outlet back pressure device can be measured, the volume under different pressure conditions is not easy to calibrate due to the influence of compressibility, and the measurement error is further increased.
In a conventional micro-pore model experiment, since the total amount of fluid in a model body is very small and ranges from 1 microliter (mu L) to 200 mu L, volume measurement can hardly be realized, an area method is usually adopted for measurement, or fluid amounts in different states are estimated through calculation, but the method is also influenced by the fact that the fluid is recognizable or not, and the flow change condition in the flowing process can not be measured. Due to the restriction of the technical situation, the conventional microscopic test mainly focuses on the positioning analysis of observation phenomena, and the quantitative analysis cannot always trouble researchers.
Therefore, the difficulty and error of the existing metering method for measuring the micro-upgrading flow are large, and the current metering requirement for the micro-upgrading flow is difficult to meet.
Disclosure of Invention
In a first aspect, an embodiment of the present application provides a micro-upgrade flow metering device, so as to reduce a metering error of the micro-upgrade flow and improve metering accuracy. The metering device comprises:
the orifice plate 8 comprises a fluid inlet 7, a fluid outlet 15 and a transverse channel 12 positioned between the fluid inlet 7 and the fluid outlet 15, the fluid inlet 7 and the transverse channel 12 are connected through a main channel 9, a first side channel 10 and a second side channel 11, an included angle between the first side channel 10 and the main channel 9 is the same as an included angle between the second side channel 11 and the main channel 9, the transverse channel 12 and the fluid outlet 15 are connected through a third side channel 32 and a fourth side channel 33, and the width of the transverse channel 12 is larger than that of the fluid inlet 7; the magnetic induction device comprises a coil 16, a conductive circuit 34 and a magnet 13, wherein the coil 16 and the magnet 13 are arranged in the transverse channel 12, one end of the conductive circuit 34 is connected with the coil 16, and the other end of the conductive circuit is connected with the current detection circuit 19; a current detection circuit 19 for detecting the magnitude of the induced current generated in the conductive line 34 and the frequency of the change in the direction of the current; the induced current is generated in the conductive line 34 when the magnet 13 is reciprocated in the transverse passage 12 in a direction perpendicular to the coil 16 by being pushed by the fluid; the calculation device 21 calculates the flow rate of the fluid based on the magnitude of the induced current and the frequency at which the direction of the current changes.
In a second aspect, an embodiment of the present application provides a metering method applied to the metering device for micro-upgrade traffic according to the first aspect, where the method includes:
detecting the magnitude of induced current generated in the conducting circuit and the frequency of change of the current direction when the fluid pushes the magnet to do reciprocating motion of the cutting coil; and calculating the flow rate of the fluid according to the magnitude of the induced current and the frequency of the change of the current direction.
The metering device of little upgrading flow that provides in this application embodiment can directly be installed at the entry or the exit of rock core micro model, has got rid of the interference of pipeline, the interior dead volume of back pressure control device and the interference of compression coefficient change, has promoted the precision of ultra-low permeability, ultra-low permeability rock core experiment, simultaneously, this application utilizes the electromagnetic induction principle, has established perception magnet reciprocating motion's little current detection method, has also solved the difficult problem that conventional micro test can't the quantitative measurement little upgrading flow.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
fig. 1 is a schematic diagram of a metering device for micro-upgrade flow provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a orifice plate in a metering device for micro-upgraded flow rate provided in an embodiment of the present application;
FIG. 3 is a schematic diagram of another micro-scale flow metering device provided in the embodiment of the present application;
FIG. 4 is a schematic structural diagram of a metering device for micro-upgrade flow provided in an embodiment of the present application;
fig. 5 is a flowchart of a metering method applied to a metering device for micro-upgrade traffic provided in an embodiment of the present application;
FIG. 6 is a schematic diagram of the size of the orifice plate of the metering device for micro-upgrade flow rate applied to a conventional micro-experiment provided in the examples of the present application;
FIG. 7 is a schematic diagram of the installation position of the metering device for micro-upgrade flow rate in a conventional microscopic experiment provided in the example of the present application;
fig. 8 is a schematic size diagram of a pore plate of the micro-upgrading flow metering device applied to a core displacement experiment provided in the embodiment of the present application;
fig. 9 is a schematic installation position diagram of a metering device for micro-upgrade flow rate in a core displacement experiment provided in an embodiment of the present application.
Reference numerals
1: tubule 2: sudden expansion pipe
3: total flow vector 4: principal direction component
5: eddy component 6: lateral component
7: fluid inlet 8: aperture plate
9: main flow channel 10: first side runner
11: second-side flow passage 12: transverse channel
13: magnet 14: location identification
15: fluid outlet 16: coil
17: an ammeter 18: substrate
19: the current detection circuit 20: amplifying circuit
21: the computing device 22: flow output display window
23: inlet 24: microscopic visual model
25: metering device 26 for micro-upgrade flow: pore part
27: outlet 28: displacement device
29: the clamper 30: hypotonic core
31: back pressure and receiving device 32: third side runner
33: fourth side flow passage 34: conductive circuit
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present application are provided herein to explain the present application and not to limit the present application.
The micro-fluidic technology is utilized, micron-sized channels are designed, and the reciprocating motion of solid microparticles in transverse channels is realized through fine adjustment of flow rates of different channels; according to the magnetic induction principle, the micro-magnet reciprocating motion generates micro-current in the surrounding conductive coil, and the flow value in the inlet and outlet pore canal can be calculated by monitoring the direction conversion frequency of the current. The principle of the method of the present application will be briefly described below.
Referring to fig. 1, as can be seen from the movement of the fluid in the flow channel of the structure of the sudden expansion pipe 2 when the thin pipe 1 enters, the total flow vector 3 is dispersed into a main direction component 4 and a side direction component 6 after entering the sudden expansion pipe 2, and vortex components 5 are formed on both sides of the end surface main flow channel where the pipe diameter suddenly increases, where the pressure is low and the fluid is easy to be retained. It is clear that if there is a small solid in the flare 2 that cannot flow out, it will migrate to this low pressure where it is most stable.
According to the principle, the embodiment of the present application designs the orifice plate 8 of the metering device for micro-upgraded flow, and the material of the orifice plate 8 may be Polydimethylsiloxane (PDMS). Referring to fig. 2, the porthole plate 8 comprises a fluid inlet 7, a fluid outlet 15 and a transverse channel 12 between the fluid inlet 7 and the fluid outlet 15. The fluid inlet 7 is connected with the transverse channel 12 through the main channel 9, the first side channel 10 and the second side channel 11, the included angle between the first side channel 10 and the main channel 9 is the same as the included angle between the second side channel 11 and the main channel 9, the transverse channel 12 is connected with the fluid outlet 15 through the third side channel 32 and the fourth side channel 33, and the width of the transverse channel 12 is larger than that of the fluid inlet 7. Wherein, the outlet width of the first side runner 10 is half of the outlet width of the main runner 9; the outlet width of the second side runners 11 is half the outlet width of the main runner 9.
As can be seen from the principle shown in fig. 1, when fluid enters from the fluid inlet 7, enters from the main channel 9, the first side channel 10 and the second side channel 11 into the lateral channel 12 with the suddenly increased diameter, see fig. 2, the pressure is lowest at the positions 04 and 04' in the lateral channel 12. The magnet 13, i.e. the magnetic ball as shown, has a tendency to stabilize there, and the magnet 13 is biased to the 04 and 04 'positions by the split flow of the outflow at 02 and 02'. If the magnets 13 at the 03 and 03 'positions have a tendency to block the outlet side flow channels, the split flow of the 02 and 02' outflow streams drives them away. Thus in the transverse channel 12 the magnet 13 will reciprocate in the range 01 and 02 or in the range 01 and 02 'or in the range 02 and 02' under the influence of the inlet fluid flow.
Considering that the magnet 13 may reciprocate in the range of 01 and 02 or in the range of 01 and 02 ' or in the range of 02 and 02 ', in the embodiment of the present application, the coil 16 is divided by the inlet main flow passage 9, and both sides are wound, respectively, that is, the coil 16 is wound in the range of 01 and 02 in fig. 2, and in the range of 01 and 02 ', respectively, so that when the magnet 13 moves in the range of 01 and 02, an induced current can be generated in the coil 16 in the range of 01 and 02; when the magnet 13 moves in the ranges of 01 and 02 ', an induced current can be generated in the coil 16 in the ranges of 01 and 02'.
It should be noted that when the magnet 13 is moved in the initial condition, it is continuously moved by the influence of inertia, and it is not stabilized at a certain position. If the magnet 13 stops moving due to a large resistance caused by the rough opening, the magnet 13 can be moved away from the stop position by artificially changing the direction and intensity of the current of the coil 16.
It is clear that the range of motion and the frequency of reciprocation of the magnet 13 within the transverse channel 12 is positively correlated to the flow rate, the higher the flow rate, the greater the range of transverse motion and the faster the frequency of reciprocation of the magnet 13.
To achieve micro-scale flow metering, the pore size of the pore plate 8 in fig. 2 is on the micrometer (μm) scale. According to the measurement requirement, the size of the pore passage is adjusted, and the metering device 25 of the micro-upgrading flow with different flow ranges can be designed and manufactured.
In addition, the metering device 25 for micro-upgrade flow provided by the embodiment of the application also utilizes the electromagnetic induction principle. As shown in fig. 3, when the magnet 13 moves in the coil 16, an induced current is generated as the magnetic flux increases or decreases, and the sensitive current meter 17 detects the corresponding current direction and amplitude change.
According to the above electromagnetic induction principle, as shown in fig. 4, the embodiment of the present application designs a magnetic induction device, a current detection circuit 19 and a computing device 21 of a metering device for micro-upgrade flow. The magnetic induction device includes a coil 16, a conductive line 34 and a magnet 13, the coil 16 and the magnet 13 are disposed inside the transverse channel 12 (not shown in fig. 4), one end of the conductive line 34 is connected to the coil 16, and the other end is connected to the current detection circuit 19. A current detection circuit 19 for detecting the magnitude of the induced current generated in the conductive line 34 and the frequency of the change in the direction of the current; an induced current is generated in the conductive line 34 when the magnet 13 is reciprocated in the transverse passage 12 in a direction perpendicular to the coil 16 by being pushed by the fluid. The calculation device 21 calculates the flow rate of the fluid based on the magnitude of the induced current and the frequency at which the direction of the current changes.
Wherein the magnetic induction device comprises two coils 16 and two conductive traces 34, each coil 16 being connected to one conductive trace 34; one of the coils 16 is arranged in the transverse channel 12 at a position between the first side channel 10 and the main channel 9; another coil 16 is arranged in the transverse channel 12 at a position between the second side channel 11 and the main channel 9. The orifice plate 8 is disposed on a substrate 18, and in order to stabilize the coil 16, the coil may be wound on the substrate 18 and cured on the substrate 18 using a liquid glue.
The material of the magnet 13 may be neodymium iron boron magnet. The shape of the magnet 13 may be a cube, a rectangular parallelepiped, a sphere, or the like. However, considering that the friction when the ball moves is small, the shape of the ball may be preferably selected as the magnet 13.
Referring to fig. 4, an overall structural schematic diagram of a metering device for micro-upgrade flow provided in the embodiment of the present application is shown. The current detection circuit 19 in the metering device includes an amplification circuit 20, and the discharge circuit 20 is connected to the conductive line 34 for amplifying the induced current in the conductive line 34. The amplifying circuit 34 may adopt a triode multi-stage amplifying method, and may detect a current variation condition of a nano-ampere (NA) stage. In the embodiment of the present application, the magnet 13 is small, the number of the coils 16 is limited by volume, and the current variation amplitude is below microampere, so that the amplifying circuit 20 may be disposed between the conductive line 34 and the current detection device to improve the measurement accuracy. The structure and connection method of the discharge circuit 20 are well known in the art and will not be described herein.
In one implementation manner of the embodiment of the present application, in order to make the user know the size of the flow rate, as shown in fig. 4, a flow rate output display window 22 may be provided for the computing device 21, and the user may know the size of the current flow rate through the display window 22.
The metering device of little upgrading flow that provides in this application embodiment can directly be installed at the entry or the exit of rock core micro model, has got rid of the interference of pipeline, the interior dead volume of back pressure control device and the interference of compression coefficient change, has promoted the precision of ultra-low permeability, ultra-low permeability rock core experiment, simultaneously, this application utilizes the electromagnetic induction principle, has established perception magnet reciprocating motion's little current detection method, has also solved the difficult problem that conventional micro test can't the quantitative measurement little upgrading flow.
The embodiment of the present application further provides a metering method applied to the metering device for micro-upgrade flow as described above, as shown in fig. 5, the method includes:
In one implementation manner of the embodiment of the present application, calculating the flow rate of the fluid according to the magnitude of the induced current and the frequency of the change of the current direction includes: according to the formula S ═ aebICalculating the path S of the magnet in one reciprocating motion, wherein a and b are constants, and I is the amplitude of the induction current; according to the formula q meSCalculating single flow q, wherein m is a constant related to a pore channel; the flow rate Q of the fluid is calculated according to the formula Q nq, where n is the frequency at which the direction of the current changes.
Wherein the constants a, b can be determined according to the following method:
presetting the flow rate of fluid, and collecting the magnitude of induced current corresponding to different flow rates and the frequency of current direction change by utilizing the flow of the fluid with different constant flow rates through a metering device for micro-upgrade flow; the constants a, b are determined according to the magnitude of the induced current corresponding to different flow rates and the frequency of the change in the direction of the current.
m is related to the pore channel structure such as the diameter of the pore channel, the included angle between the main flow channel and the side flow channel, the length of the flow channel, the width of the transverse channel and the like. Therefore, after the metering device for the micro-upgrading flow rate is manufactured, the parameter m is determined by performing an experiment with a fixed flow rate according to the pore structure.
The metering device of little upgrading flow that provides in this application embodiment can directly be installed at the entry or the exit of rock core micro model, has got rid of the interference of pipeline, the interior dead volume of back pressure control device and the interference of compression coefficient change, has promoted the precision of ultra-low permeability, ultra-low permeability rock core experiment, simultaneously, this application utilizes the electromagnetic induction principle, has established perception magnet reciprocating motion's little current detection method, has also solved the difficult problem that conventional micro test can't the quantitative measurement little upgrading flow.
The micro-upgrading flow metering device applied to the conventional micro experiment and the micro-upgrading flow metering device applied to the core displacement experiment are described in the following by combining specific dimensions.
1. Micro-upgrading flow metering device applied to conventional micro experiment
The design dimensions of the metering device for micro-upgrade flows suitable for the micro-visual model are shown in fig. 6. The dimension of the outer dimension is 3 millimeters (mm) multiplied by 6mm multiplied by 2mm, and the thickness of the pore channel is 40 micrometers (mum). The total volume of space within the bore of the metering device was calculated to be about 0.2 microliters (μ L). The method and process for making 40 μm channel PDMS model are mature technologies and will not be described herein.
The coil 16 of the magnetic induction device can be made of copper wire with 12 μm diameter, and when the shape of the used magnet 13 is spherical, the diameter of the magnetic sphere is between 30 μm and 35 μm.
In conducting a routine microscopic experiment, the installation may be performed according to one of the locations where the metering device 25 of two micro-upgrade flows is installed as shown in fig. 7, that is, the metering device 25 of the micro-upgrade flow may be installed at either the inlet end 23 or the outlet end 27. In the microscopic visual model 24, the metering device 25 is placed directly inside the microscopic visual model 24.
In a conventional microscopic experiment by using the metering device 25 for micro-upgrade flow provided by the application, the total amount of fluid in the pore passage of the microscopic visual model 24 is accurately metered.
Further, the aperture portion 26 shown in fig. 7 is an integral part of the microscopic visual model 24.
2. Be applied to metering device of little upgrading flow in rock core displacement experiment
The design size of the metering device suitable for the core displacement micro-upgrading flow is shown in figure 8, the external dimension of the metering device is 10mm multiplied by 20mm multiplied by 2mm, and the pore channel thickness is 120 mu m. The total volume of the space in the bore of the metering device was calculated to be about 3.6. mu.L.
The coil 16 of the magnetic induction device can also adopt a copper wire with a diameter of 12 μm, and when the shape of the used magnet 13 is a ball shape, the diameter of the magnetic ball is between 100 and 115 μm.
In the core displacement experiment, the device can be installed according to one of the installation positions of the two metering devices 25 with micro-upgrading flow as shown in fig. 9, that is, the metering devices 25 with micro-upgrading flow can be installed at both the inlet end and the outlet end, and in the core displacement experiment, the metering devices need to be in contact with the rock.
In addition, it is also noted that in the core displacement experiment, the injection speed of the displacement device is strictly controlled. The injection speed is very slow, for example the speed of the injection pump is set to 0.05ml/min (50 mul/min), since the metering device of the micro-upgrade flow rate is consistent with the slow seepage characteristics of ultra-low seepage and ultra-low seepage, while the metering device of the micro-upgrade flow rate excludes the influence of the compressibility of the fluid in the displacement device and the intermediate container, and the measured value is 40 mul/min.
During the displacement experiment is carried out to the metering device who utilizes little upgrading flow that this application provided, the flow that the fluid passes through metering device obtains real-time measurement and storage.
In addition, the displacement device 28, the holder 29, the hypotonic core 30, the back pressure and receiving device 31 shown in fig. 9 are all common devices in core displacement experiments, and are not described again here.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above-mentioned embodiments are further described in detail for the purpose of illustrating the invention, and it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A metering device for micro-scale flow, the metering device comprising:
the orifice plate (8) comprises a fluid inlet (7), a fluid outlet (15) and a transverse channel (12) positioned between the fluid inlet (7) and the fluid outlet (15), the fluid inlet (7) and the transverse channel (12) are connected through a main channel (9), a first side channel (10) and a second side channel (11), an included angle between the first side channel (10) and the main channel (9) is the same as that between the second side channel (11) and the main channel (9), the transverse channel (12) and the fluid outlet (15) are connected through a third side channel (32) and a fourth side channel (33), and the width of the transverse channel (12) is larger than that of the fluid inlet (7);
the magnetic induction device comprises a coil (16), a conductive circuit (34) and a magnet (13), wherein the coil (16) and the magnet (13) are arranged in the transverse channel (12), one end of the conductive circuit (34) is connected with the coil (16), and the other end of the conductive circuit is connected with the current detection circuit (19);
a current detection circuit (19) for detecting the magnitude of an induced current generated in the conductive line (34) and the frequency of change in the direction of the current; the induced current is generated in the conductive line (34) when the magnet (13) is reciprocated in the transverse channel (12) in a direction perpendicular to the coil (16) by the fluid;
and a calculation device (21) that calculates the flow rate of the fluid based on the magnitude of the induced current and the frequency at which the direction of the current changes.
2. The apparatus according to claim 1, wherein the current detection circuit (19) comprises:
and the amplifying circuit (20) is connected with the conductive line (34) and is used for amplifying the induced current in the conductive line (34).
3. The device according to claim 1, characterized in that the outlet width of the first side channel (10) is half the outlet width of the main channel (9); the outlet width of the second side runner (11) is half of the outlet width of the main runner (9).
4. A device according to claim 1 or 2, characterized in that the magnetic induction means comprise two coils (16) and two electrically conductive tracks (34), each coil (16) being connected to one electrically conductive track (34); one of the coils (16) is arranged in the transverse channel (12) at a position between the first side channel (10) and the main channel (9); another coil (16) is arranged in the transverse channel (12) at a position between the second side channel (11) and the main channel (9).
5. The device according to claim 1, characterized in that the orifice plate (8) is arranged on a base plate (18), the coil (16) being wound on the base plate (18) and being cured on the base plate (18) with a liquid glue.
6. The device according to claim 1, wherein the material of the orifice plate (8) comprises polydimethylsiloxane.
7. Device according to claim 1, characterized in that the material of the magnet (13) comprises a neodymium-iron-boron magnet.
8. A metering method applied to the metering device of the micro-upgrade flow as claimed in any one of claims 1 to 6, characterized in that the method comprises the following steps:
detecting the magnitude of induced current generated in the conducting circuit and the frequency of change of the current direction when the fluid pushes the magnet to do reciprocating motion of the cutting coil;
and calculating the flow rate of the fluid according to the magnitude of the induced current and the frequency of the change of the current direction.
9. The method of claim 8, wherein calculating the flow rate of the fluid based on the magnitude of the induced current and the frequency of the change in direction of the current comprises:
according to the formula S ═ aebICalculating the path S of the magnet in one reciprocating motion, wherein a and b are constants, and I is the amplitude of the induction current;
according to the formula q meSCalculating single flow q, wherein m is a constant related to a pore channel;
the flow rate Q of the fluid is calculated according to the formula Q nq, where n is the frequency at which the direction of the current changes.
10. The method of claim 8 or 9, wherein before calculating the flow rate of the fluid based on the magnitude of the induced current and the frequency of the change in direction of the current, the method further comprises:
presetting the flow rate of fluid, and collecting the magnitude of induced current corresponding to different flow rates and the frequency of current direction change by utilizing the flow of the fluid with different constant flow rates through a metering device for micro-upgrade flow;
the constants a, b are determined according to the magnitude of the induced current corresponding to different flow rates and the frequency of the change in the direction of the current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910324671.6A CN111829600B (en) | 2019-04-22 | 2019-04-22 | Metering device and metering method for micro-upgrade flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910324671.6A CN111829600B (en) | 2019-04-22 | 2019-04-22 | Metering device and metering method for micro-upgrade flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111829600A CN111829600A (en) | 2020-10-27 |
| CN111829600B true CN111829600B (en) | 2021-05-28 |
Family
ID=72912592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910324671.6A Active CN111829600B (en) | 2019-04-22 | 2019-04-22 | Metering device and metering method for micro-upgrade flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111829600B (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018715A (en) * | 1983-07-13 | 1985-01-30 | Tokyo Gas Co Ltd | Fluidic flowmeter |
| US4635485A (en) * | 1985-06-24 | 1987-01-13 | Lew Hyok S | Precession flow meter |
| GB9526067D0 (en) * | 1995-12-20 | 1996-02-21 | Sev Trent Water Ltd | Feedback fluidic oscillator |
| US6736978B1 (en) * | 2000-12-13 | 2004-05-18 | Iowa State University Research Foundation, Inc. | Method and apparatus for magnetoresistive monitoring of analytes in flow streams |
| NZ537147A (en) * | 2004-12-13 | 2007-06-29 | Australo Ltd | Method and apparatus for particle analysis |
| GB0508342D0 (en) * | 2005-04-26 | 2005-06-01 | Sev Trent Metering Services Lt | Meter |
| GB2463488A (en) * | 2008-09-12 | 2010-03-17 | Elster Metering Ltd | A bidirectional flow meter |
| CN101441095B (en) * | 2008-12-02 | 2011-11-09 | 深圳市思达仪表有限公司 | Flow instrument and jet flow oscillator thereof |
| CN201355259Y (en) * | 2008-12-02 | 2009-12-02 | 深圳市思达仪表有限公司 | Flowmeter and fluid oscillator thereof |
| DE102010023099B3 (en) * | 2010-06-09 | 2011-11-17 | Celltool Gmbh | Method and device for characterizing biological objects |
| JP2012220252A (en) * | 2011-04-05 | 2012-11-12 | Hitachi Ltd | Fluid level measuring device of solenoid coil type |
| US8858140B2 (en) * | 2012-06-01 | 2014-10-14 | International Business Machines Corporation | Anti-tamper system |
-
2019
- 2019-04-22 CN CN201910324671.6A patent/CN111829600B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111829600A (en) | 2020-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109115838B (en) | Multi-parameter oil liquid detection device and manufacturing method thereof | |
| Cha et al. | Flow measurement with an electromagnetic flowmeter in two-phase bubbly and slug flow regimes | |
| FI127032B (en) | Measuring arrangement, apparatus for a measuring arrangement and method for measuring a sample | |
| CN109283120B (en) | Three-coil oil detection device and manufacturing method thereof | |
| CN109630502B (en) | Multi-parameter oil comprehensive detection device and manufacturing method thereof | |
| CN109100270A (en) | A kind of annular fluid channel oil liquid detection device and preparation method thereof | |
| CN103308126B (en) | Quick detection device for aperture restrictor, and detection method thereof | |
| CN111829600B (en) | Metering device and metering method for micro-upgrade flow | |
| CN101263367B (en) | Method for determining the operating point of a magneto-inductive flowmeter | |
| US20170102313A1 (en) | Cartridge for a Magnetic Flow Cytometer, a Magnetic Flow Cytometer, and Method for Analysing a Sample With Such a Cartridge | |
| Ching et al. | Investigation of geometric sensitivity of a non-axisymmetric bump: 3D mean velocity measurements | |
| CN104132716B (en) | Vehicular Oil Flowmeter Standard Apparatus | |
| CN105190286A (en) | Method for enriching and isolating cells having concentrations over several logarithmic steps | |
| CN112986343B (en) | High magnetic conductive material inductance-electric capacity binary channels fluid detection device | |
| CN103558126A (en) | Device and method for determining and analyzing particles in liquid | |
| DE102006018623B4 (en) | Method and arrangement for contactless measurement of the flow of electrically conductive media | |
| AU2016200349B2 (en) | Multiphase flow measurement | |
| CN110935492A (en) | Micro-fluidic detection system and method for real-time flow velocity of fluid | |
| JP2022120763A (en) | Novel bridge oil liquid measuring device for monitoring and controlling soundness of machinery facility | |
| CN105160053B (en) | A kind of optimum design method for the magnetorheological damping unit that performance is oriented to | |
| CN108397188B (en) | Sensor for measuring water phase conductivity of water-phase multi-phase flow in vertical riser | |
| CN207528594U (en) | The detecting system of non-metallic particle in a kind of fluid | |
| Musumeci et al. | Ferrofluid measurements of bottom velocities and shear stresses | |
| US20230408309A1 (en) | Multiphase flow meters and related methods | |
| CN108442920B (en) | Water phase conductivity measuring device for water-containing phase multi-phase flow in vertical riser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |