CN110763704B - Oil-water two-phase flow water content measurement system based on microwave Wire mesh - Google Patents
Oil-water two-phase flow water content measurement system based on microwave Wire mesh Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000005259 measurement Methods 0.000 title claims abstract description 30
- 230000005514 two-phase flow Effects 0.000 title claims abstract description 26
- 238000001914 filtration Methods 0.000 claims description 30
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 238000011109 contamination Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 12
- 235000019198 oils Nutrition 0.000 description 12
- 239000010410 layer Substances 0.000 description 11
- 230000005284 excitation Effects 0.000 description 7
- 239000010779 crude oil Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 235000019476 oil-water mixture Nutrition 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
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- 230000004044 response Effects 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
- G01N22/04—Investigating moisture content
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Abstract
The invention provides an oil-water two-phase flow water content measuring system based on a microwave Wire, which comprises a Wire sensor, wherein the Wire sensor comprises two layers of electrode wires, each layer of electrode wires is arranged in parallel, and the two layers of electrode wires are vertically arranged to form a grid structure; one layer of electrode wire is a signal transmitting end, and the other layer of electrode wire is a signal receiving end; the signal transmitting end is connected with a microwave signal generating system, the signal receiving end is connected with a signal acquisition system, and the microwave signal generating system and the signal acquisition system are both connected with a central control system. Compared with the contact measurement by a conductivity method, the electrode contamination can not significantly influence the measurement accuracy of the water holdup by adopting a non-contact measurement means based on the microwave Wire mesh sensor.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to an oil-water two-phase flow water content measurement system based on a microwave Wire mesh.
Background
The water content of the crude oil is an important parameter in the petroleum exploitation and petrochemical industry, is key data in oil field production and oil trade, and has important significance for exploitation, dehydration, storage and transportation sales of the crude oil, refining and processing of the crude oil and the like. After the crude oil water content tester with various different forms is put into oil fields for use, the stability, accuracy, instantaneity, reliability and cost of the crude oil water content tester are difficult to adapt to actual production requirements of high-water-content oil fields in China due to process and technical level reasons. Under the premise, the water content of the pipeline in the petroleum exploitation process is measured by the novel sensor, which is particularly important.
Disclosure of Invention
In view of the above, the invention provides an oil-water two-phase flow water content measuring system based on a microwave Wire mesh.
The invention provides an oil-water two-phase flow water content measuring system based on a microwave Wire mesh, which is characterized in that: the system comprises a Wire mesh sensor, wherein the Wire mesh sensor comprises two layers of electrode wires, each layer of electrode wires are arranged in parallel, and the two layers of electrode wires are vertically arranged to form a grid structure; one layer of electrode wire is a signal transmitting end, and the other layer of electrode wire is a signal receiving end;
the signal receiving end is connected with a microwave signal generating system, the signal transmitting end is connected with a signal acquisition system, and the microwave signal generating system and the signal acquisition system are both connected with a central control system.
Preferably, the electrode wire is made of a copper enameled wire with the thickness of 0.2 mm.
Preferably, the Wire mesh sensor adopts an 8×8 structure, and the distance between adjacent electrode wires with an interlayer spacing of 1.6mm is 7.14mm.
Preferably, the microwave signal generating system comprises a microwave signal generating module, wherein one end of the microwave signal generating module is connected with the central control system, receives a control instruction of the central control system and generates a microwave signal; the other end is connected with the signal sending end, and a microwave excitation signal is applied to the signal sending end of the Wire mesh sensor.
Preferably, a microwave signal filtering module is connected between the microwave signal generating module and the signal transmitting end of the Wire mesh sensor, and is used for filtering the microwave signal.
Preferably, the microwave signal generating system further comprises a microwave channel switching module, wherein the input end of the microwave channel switching module is connected with the microwave signal generating module, receives the microwave signals with different frequencies sent by the microwave signal generating module, and switches the filtering channel according to the different input frequencies; the output end is connected with the microwave signal filtering module.
Preferably, the microwave signal generating system is further provided with a power distributor, an input end of the power distributor is connected with an output end of the microwave signal filtering module, and an output end of the power distributor is respectively connected with a transmitting end of the Wire mesh sensor and the microwave signal comparing module in the signal collecting system.
Preferably, the signal acquisition system comprises a microwave signal comparison module, and the input end of the microwave signal comparison module is respectively connected with the signal receiving end of the Wire mesh sensor and one path of the power divider of the microwave signal generation system.
Preferably, the signal acquisition system further comprises a microwave signal acquisition module, the input end of the microwave signal acquisition module is connected with the output end of the microwave signal comparison module, the output end of the microwave signal acquisition module is connected with computer equipment, and the microwave signal acquisition module is controlled by the central control module.
Preferably, each group of signal transmitting ends is connected with a transmitting end control switch, each group of signal receiving ends is connected with a receiving end control switch, the microwave signal generating system is connected with the microwave signal transmitting end through the transmitting end control switch, and the signal receiving end is connected with the signal collecting system through the receiving end control switch; the transmitting end control switch and the receiving end control switch are connected with the central control system.
The invention has the advantages and positive effects that: firstly, a non-contact measurement means is adopted based on a microwave Wire mesh sensor. Electrode contamination does not affect the accuracy of the water holdup measurement compared to the conductivity contact measurement. Next, the multiphase flow flows through the Wire mesh sensor, and the computer device can generate a cross-sectional distribution image based on the relative permittivity values of the different phases by collecting data of the receiving electrode. The spatial resolution of a microwave-based Wire mesh sensor is equal to the distance between two adjacent electrodes. The tube diameter can be reduced, the number of electrodes can be increased, and the spatial resolution can be improved according to specific requirements. And thirdly, the microwave-based Wire mesh sensor uses microwaves as excitation signals, and excitation frequency is higher than that of conductance and capacitance, so that a larger lifting space is provided for the increase of the sampling rate, a better acquisition circuit and acquisition equipment are selected, and the number of frames acquired in unit time of the section distribution image can be increased.
Drawings
FIG. 1 is a schematic structural diagram of an oil-water two-phase flow water content measurement system based on a microwave Wire mesh;
FIG. 2 is a schematic circuit diagram of an oil-water two-phase flow water content measuring system based on a microwave Wire mesh;
fig. 3 is a schematic circuit diagram of another embodiment of an oil-water two-phase flow water content measuring system based on microwave Wire mesh.
Detailed Description
For a better understanding of the present invention, the present invention is further described below with reference to specific examples and drawings.
As shown in fig. 1, the invention provides an oil-water two-phase flow water content measuring system based on a microwave Wire mesh, which comprises a Wire mesh sensor 10, wherein the Wire mesh sensor 10 comprises two layers of electrode wires, each layer of electrode wires are arranged in parallel, and the two layers of electrode wires are vertically arranged to form a grid structure; one layer of electrode wires is a signal transmitting end 102, and the other layer of electrode wires is a signal receiving end 101;
the signal receiving end 101 is connected with a signal receiving system, the signal transmitting end is connected with a microwave signal generating system, and the microwave signal generating system and the signal collecting system are both connected with a central control system.
Wire mesh is a metal mesh sensor for measuring the water content of crude oil, and was originally proposed by Johnson ID. in 1987. And (3) measuring a response signal of the Wire mesh sensor to obtain conductivity distribution and dielectric coefficient distribution of the silk screen, so as to perform tomography and obtain the volume fraction of oil water and the shape of oil bubbles.
At present, wire mesh mainly has two types, namely capacitive type and conductive type. Traditional conductance has limitations in terms of capture, and the high diversity of the dispersed phase severely affects the measurement. Hammer et al use capacitance methods to measure, which use the average method of all mixed fluids in the pipeline to measure, and are suitable for the complex flow pattern requirements of two-phase flow under working conditions. However, the capacitance method has a small measuring range and poor adjustability, and is only suitable for oil fields with water content lower than 84%. And contamination of oil-water greatly affects measurement accuracy.
Microwaves are electromagnetic waves having a frequency of 300MHz to 300GHz, and in recent years, microwave technology has been widely used in imaging technology and measuring technology as well as in the field of communications. As a non-contact measurement means, the application of microwave method in two-phase flow and binary solution is attracting attention. Since the microwave method is sensitive to the change of the dielectric constant of the fluid, it is often used to detect the type of liquid, especially various binary solutions which are not easily directly detected.
The invention combines the microwave technology with the Wire mesh sensing technology, the microwave method is a dielectric medium measuring mode under high frequency, and for the oil-water two-phase flow, the oil-water mixture with different proportions has different absorption of microwave signals due to the difference of dielectric constants between the oil phase and the water phase, so that the phase content measurement of the oil-water two-phase flow can be realized. And under the microwave frequency, the water holding rate of the oil-water mixture can be obtained according to the phase shift and amplitude attenuation values of the microwave signals after the oil-water mixture is permeated.
The Wire mesh sensor consists of two layers of parallel electrode wires which are perpendicular to each other and are closely spaced, so that a sensor network is formed. In the practical application process, the Wire mesh sensor is arranged on a section perpendicular to the flow direction of the two-phase flow in the pipeline, and the oil-water two-phase flow vertically passes through the grid surface.
In a specific embodiment of the invention, the electrode Wire is made of copper enameled wires with the thickness of 0.2mm, the Wire mesh sensor is of an 8×8 structure, and the distance between adjacent electrode wires with the thickness of 1.6mm is 7.14mm. The electrode wires arranged longitudinally are signal transmitting ends, and the electrode wires arranged transversely are signal receiving ends; the signal transmitting end is connected with the microwave signal generating system and applies a microwave excitation signal to the transmitting end electrode. The signal receiving end is connected with the signal receiving system and outputs a signal capable of reflecting the state of the two-phase flow. The Wire mesh sensor is used for measuring based on the instantaneous conductivity of the two-phase flow mixture, a signal transmitting end is used for transmitting a microwave signal, a signal receiving end is used for outputting an electric signal, and a signal acquisition system is used for analyzing and judging the electric signal to replace the integration of a binary signal so as to realize data acquisition.
Firstly, a non-contact measurement means is adopted based on a microwave Wire mesh sensor. Electrode contamination does not affect the accuracy of the water holdup measurement compared to the conductivity contact measurement.
We take the measurement of oil-water two-phase flow as an example. In conventional conductivity contact measurement methods, the electrodes need to be in direct contact with the solution. When the flow of oil and water in the pipe is studied, the oil-water two media are distinguished according to the difference of the resistivity and the relative dielectric constant of the oil-water two phases. In the oil-water two-phase flow, oil drops flowing through the sensor electrode often pollute the sensor electrode, the measurement accuracy after the sensor electrode is affected, and the sensor made of metal materials is easy to produce scaling, surface corrosion, blockage or damage and the like, and certain errors are caused to the measurement accuracy.
The microwave method is to judge the water holding rate of the mixed solution according to the change of the amplitude and the phase of the microwave signal after the oil-water mixture flows through by utilizing the difference of the dielectric constants between the oil phase and the water phase and the difference of the absorption condition of the oil and the water to the microwave. The microwave-based Wire mesh sensor adopts a high-quality enameled Wire as an electrode material, and is in direct contact with an oil-water mixture to form an insulating outer surface which is not easy to stain, so that the influence of electrode stains and other problems on measurement can be effectively reduced. Meanwhile, the microwave transmission performance is good, the microwave is not easy to be interfered by other external factors in the transmission process, and the microwave transmission device is suitable for water solution analysis.
Next, the multiphase flow flows through the Wire mesh sensor, and the computer device can generate a cross-sectional distribution image based on the relative permittivity values of the different phases by collecting data of the receiving electrode. The spatial resolution of a microwave-based Wire mesh sensor is equal to the distance between two adjacent electrodes. The tube diameter can be reduced, the number of electrodes can be increased, and the spatial resolution can be improved according to specific requirements.
And thirdly, the microwave-based Wire mesh sensor uses microwaves as excitation signals, and excitation frequency is higher than that of conductance and capacitance, so that a larger lifting space is provided for the increase of the sampling rate, a better acquisition circuit and acquisition equipment are selected, and the number of frames acquired in unit time of the section distribution image can be increased.
Further, as shown in fig. 2, the microwave signal generating system includes a microwave signal generating module, one end of the microwave signal generating module is connected with the central control system, receives a control instruction of the central control system, and generates a microwave signal; the other end is connected with the signal sending end and sends microwave signals to the signal sending end of the Wire mesh sensor.
In a preferred embodiment of the present invention, PXI-5671 is used as a microwave signal-generating module; the PXI-5671 vector signal generator has the function of quadrature digital up-conversion, reduces the time of waveform downloading and signal generation, is a universal vector signal generator and can generate standard modulation formats such as AM, FM, PM, ASK, FSK, MSK, GMSK, PSK, QPSK, PAM and QAM. It can generate signals with any frequency within 50 MHz-2.7 GHz. The PXI-5671 is used as a microwave signal generating module, so that high-quality excitation signals can be ensured.
Further, since a small amount of harmonic exists in the microwave signal output by the microwave signal generating module, a microwave signal filtering module is connected between the microwave signal generating module and the signal receiving end of the Wire mesh sensor, and is used for filtering the microwave signal.
Further, since the filtering channel needs to be selected according to different input frequencies, a microwave channel switching module needs to be provided. The input end of the microwave channel switching module is connected with the microwave signal generating module, receives the microwave signals with different frequencies sent by the microwave signal generating module, and switches the filtering channel according to the different input frequencies; the output end is connected with the microwave signal filtering module.
In a preferred embodiment of the present invention, the microwave channel switching module selects HMC241QS16.HMC241QS16 is a four-channel microwave channel switching chip, the coverage frequency range is 0-3500 MHz, and the chip has good channel isolation performance, and the isolation loss is below 0.5 dB; the microwave signal filtering module selects LFCN series low-pass filter groups, filters microwave signals with different frequencies through switching of different microwave channels, and has the excellent characteristics of low attenuation and small volume.
The microwave signal acquisition system is characterized in that the microwave signal acquisition system is provided with a microwave signal filtering module, the microwave signal filtering module is connected with a signal transmitting end of the microwave signal filtering module, the signal transmitting end of the microwave signal filtering module is connected with a signal receiving end of the microwave signal filtering module, the signal receiving end of the microwave signal filtering module is connected with a signal transmitting end of the microwave signal filtering module, the signal transmitting end of the microwave signal filtering module is connected with a signal receiving end of the microwave signal filtering module, and the signal receiving end of the microwave signal filtering module is connected with a signal receiving end of the microwave signal filtering module; the other path of the power divider is used as a comparison signal and is connected to the signal acquisition system, and the signal acquisition system compares the two paths of signals.
In an embodiment of the invention, the microwave signal generating system comprises: the system comprises a microwave signal generation module, a microwave channel switching module, a microwave signal filtering module and a power distributor, wherein the input end of the microwave signal generation module is connected with the central control system, receives a control instruction of the central control system and generates a microwave signal; the input end of the microwave channel switching module is connected with the output end of the microwave signal generating module, receives the microwave signal of the microwave signal generating module and outputs microwaves with specified frequency; the input end of the microwave signal filtering module is connected with the output end of the microwave channel switching module, receives the microwave signals with different frequencies output by the microwave channel switching module, and filters harmonic waves in the microwave signals; the input end of the power distributor is connected with the output end of the microwave signal filtering module, and the output end of the power distributor is respectively connected with the signal transmitting end of the Wire mesh sensor and the signal acquisition system.
In the embodiment of the invention, the central control system controls the microwave signal generating module to generate the microwave signal with the designated frequency, and according to different signal frequencies, the microwave channel switching module selects different microwave channels and transmits the microwave signal to the microwave signal filtering module through the different microwave channels; the filtered microwave signals are transmitted to the power distributor, the power distributor divides the microwave signals into two paths, one path is used as a measurement input signal and connected to a Wire mesh sensor, and an output signal of the Wire mesh sensor is connected to the signal acquisition system; the other path of the power divider is used as a comparison signal and is connected to the signal acquisition system, and the signal acquisition system compares the two paths of signals.
Further, the signal acquisition system comprises a microwave signal comparison module and a voltage acquisition module, wherein the input end of the microwave signal comparison module is respectively connected with the signal receiving end of the Wire mesh sensor and one path of the power divider of the microwave signal generation system, receives a measurement signal from the Wire mesh sensor, receives a comparison signal from the power divider of the microwave signal generation system, compares the measurement signal with the comparison signal, and outputs two characteristic parameters of phase and amplitude in a voltage mode; the input end of the voltage acquisition module is connected with the output end of the microwave signal comparison module, the output end of the voltage acquisition module is connected with the central control module, and the voltage acquisition module is responsible for acquiring the voltage output by the microwave signal comparison module and uploading the voltage to the computer equipment.
In a preferred embodiment of the present invention, the microwave signal comparing module selects an AD8302, where the AD8302 is an RF/IF amplitude and phase measuring chip, and compares and interprets two signals from two dimensions of amplitude and phase, where the measuring range of the amplitude can reach 60dB, and the measuring range of the phase can reach 180 °.
In order to ensure the highest sampling rate of the original data, the voltage acquisition module adopts a PXI multifunctional I/O module-PXI-6123, which is synchronous sampling multifunctional data acquisition equipment. It provides analog input, digital I/O, two 24-bit counters, and digital triggering. In the present invention, the single channel sampling rate is 500KHz.
The central control system adopts STM32F105RBT6, and STM32F105RBT6 is 32-bit processing based on an ARM platform, supports SPI, USART, I C and other communication peripherals, and has the characteristics of low power consumption, low cost, high performance and high stability. And the STM32F105RBT6 is used as a system central control, and is used for controlling the signal frequency of the microwave signal sent by the microwave signal generation module and the signal switching of the microwave channel switching module through the SPI and other communication buses, and receiving the feedback data of the voltage acquisition module.
Further, as shown in fig. 3, each group of signal transmitting ends is connected with a transmitting end control switch, each group of signal receiving ends is connected with a receiving end control switch, the microwave signal generating system is connected with the microwave signal transmitting end through the transmitting end control switch, and the signal receiving end is connected with the signal collecting system through the receiving end control switch; the transmitting end control switch and the receiving end control switch are connected with the central control system.
Because the transverse electrode wires and the longitudinal electrode wires of the Wire mesh sensor are mutually staggered to form a sensor network, a receiving end control switch is connected to each group of longitudinal electrode wires, namely a signal receiving end, and the opening and closing of the receiving end control switch can be controlled by the central control system, so that the signal input of each group of longitudinal electrode wires, namely the signal receiving end, is selected, namely the selective input of microwave signals is realized; meanwhile, a transmitting end control switch is connected to each group of transverse electrode wires, namely a signal transmitting end, and the starting and the closing of the transmitting end control switch can be controlled through the central control system, so that the signal output of each group of transverse electrode wires, namely the signal transmitting end, is selected; by arranging the receiving end control switch and the transmitting end control switch at each group of signal receiving ends and each group of signal transmitting ends respectively, accurate measurement of a certain point in the sensor network can be realized, and specific analysis of oil-water two-phase flow at different points can be realized.
In the embodiment, the signal receiving end adopts switching acquisition, so that the cost is effectively reduced, the volume of the sensor system is reduced, and the practical application is facilitated.
The foregoing describes the embodiments of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by this patent.
Claims (5)
1. The system for measuring the water content of the oil-water two-phase flow based on the microwave Wire mesh is characterized in that: the system comprises a Wire mesh sensor, wherein the Wire mesh sensor comprises two layers of electrode wires, each layer of electrode wires are arranged in parallel, and the two layers of electrode wires are vertically arranged to form a grid structure; one layer of electrode wire is a signal transmitting end, and the other layer of electrode wire is a signal receiving end;
the signal transmitting end is connected with a microwave signal generating system, the signal receiving end is connected with a signal acquisition system, and the microwave signal generating system and the signal acquisition system are both connected with a central control system;
the microwave signal generation system comprises a microwave signal generation module, one end of the microwave signal generation module is connected with the central control system, receives a control instruction of the central control system and generates a microwave signal; the other end is connected with the signal receiving end and sends a microwave signal to the signal receiving end of the Wire mesh sensor;
the microwave signal generation system is also provided with a power distributor, the input end of the power distributor is connected with the output end of the microwave signal filtering module, and the output end of the power distributor is respectively connected with the transmitting end of the Wire mesh sensor and the microwave signal comparison module in the signal acquisition system;
the signal acquisition system comprises a microwave signal comparison module, wherein the input end of the microwave signal comparison module is respectively connected with the signal receiving end of the Wire mesh sensor and one path of the power distributor of the microwave signal generation system;
the signal acquisition system further comprises a microwave signal acquisition module, wherein the input end of the microwave signal acquisition module is connected with the output end of the microwave signal comparison module, and the output end of the microwave signal acquisition module is connected with the central control system;
each group of signal transmitting ends are connected with a transmitting end control switch, each group of signal receiving ends are connected with a receiving end control switch, the microwave signal generating system is connected with the microwave signal transmitting end through the transmitting end control switch, and the signal receiving ends are connected with the signal acquisition system through the receiving end control switches; the transmitting end control switch and the receiving end control switch are connected with the central control system.
2. The microwave Wire mesh-based oil-water two-phase flow water content measurement system according to claim 1, wherein the system is characterized in that: the electrode wire is made of copper enameled wires with the diameter of 0.2 mm.
3. The microwave Wire mesh-based oil-water two-phase flow water content measurement system according to claim 1, wherein the system is characterized in that: the Wire mesh sensor adopts an 8 multiplied by 8 structure, and the distance between adjacent electrode wires with the layer spacing of 1.6mm is 7.14mm.
4. The microwave Wire mesh-based oil-water two-phase flow water content measurement system according to claim 3, wherein: and a microwave signal filtering module is connected between the microwave signal generating module and the signal receiving end of the Wire mesh sensor and used for filtering the microwave signal.
5. The microwave Wire mesh-based oil-water two-phase flow water content measurement system according to claim 4, wherein: the microwave signal generation system further comprises a microwave channel switching module, wherein the input end of the microwave channel switching module is connected with the microwave signal generation module, receives microwave signals with different frequencies sent by the microwave signal generation module, and switches the microwave channel according to the different input frequencies; the output end is connected with the microwave signal filtering module.
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| CN112268913B (en) * | 2020-09-18 | 2022-09-02 | 天津大学 | Oil-gas-water three-phase flow microwave water holding rate measuring method capable of eliminating influence of water mineralization degree |
| CN113466312A (en) * | 2021-06-16 | 2021-10-01 | 上海交通大学 | Electrolyte solution concentration measuring system and method based on microwave silk screen sensor |
| WO2024075286A1 (en) * | 2022-10-07 | 2024-04-11 | 富士電機株式会社 | Sensor system and method for measuring gas-liquid ratio |
| KR102525922B1 (en) * | 2022-10-31 | 2023-04-27 | 대한민국 | Apparatus for detecting rain using wire mesh sensor |
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