CN211602982U - Resonant cavity sensor calibration and temperature and conductivity testing device - Google Patents
Resonant cavity sensor calibration and temperature and conductivity testing device Download PDFInfo
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- CN211602982U CN211602982U CN201921705094.7U CN201921705094U CN211602982U CN 211602982 U CN211602982 U CN 211602982U CN 201921705094 U CN201921705094 U CN 201921705094U CN 211602982 U CN211602982 U CN 211602982U
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Abstract
The utility model relates to a resonant cavity sensor is markd and temperature, conductivity testing arrangement, include: the device comprises a computer, a vector network analyzer, a resonant cavity to be tested, a test pipe section, a transparent scale view port and an electronic scale. Vector network analyzer: receiving an instruction of a computer, executing the setting of relevant parameters of the computer, controlling a signal source to send out an excitation signal, receiving a signal passing through a resonant cavity to be tested, and forming test data, wherein two ports of a vector network analyzer are respectively connected with two ports of the resonant cavity to be tested by adopting test coaxial cables; testing a pipe section: the device is a part of a resonant cavity sensor for measuring the water content of a water-containing multiphase flow, is provided with a temperature sensor and a conductivity sensor, and is provided with a liquid adding hole and a salt adding hole; a resonant cavity to be tested: the sensor is used for measuring the water content of the water-containing multiphase flow. The utility model discloses can be scientific effective quick and accurate demarcation for at the temperature, the measurement of conductivity, it is more accurate in the measurement of test tube moisture content.
Description
Technical Field
The utility model relates to a heterogeneous class of flow detection of moisture, test technical field especially relates to a natural gas moisture content measuring device.
Background
A resonant cavity sensor is a new technology and an effective means for accurately measuring the water content, a microwave resonant cavity method for measuring the water content of an aqueous multiphase flow is a hotspot of research in recent years, but for the resonant cavity sensor for measuring the water content of the aqueous multiphase flow, the calibration of the water content and the temperature and the conductance of a fluid are important research links influencing the measurement accuracy, however, at present, the calibration of the resonant cavity sensor in a laboratory, a testing device and a testing method for forming temperature and conductivity influencing factors are not found in the test, and researchers cannot use related devices and have no related methods when the experimental calibration device and the research resonant cavity sensor are influenced by the temperature and the mineralization degree, so that the experimental research wastes a large amount of time, the experimental efficiency is low, and the enthusiasm of the researchers is hindered. Therefore, the utility model discloses resonant cavity sensor calibration device and test temperature and conductivity influence factor experimental apparatus and method of moisture multiphase flow moisture content have important realistic meaning to the test of resonant cavity sensor scientific system.
SUMMERY OF THE UTILITY MODEL
The utility model aims at developing a to present laboratory to demarcating and temperature, conductivity testing arrangement for resonant cavity sensor to promote the scientificity of experiment, accuracy and maneuverability improve experimental research's efficiency. In order to realize the purpose, the utility model adopts the technical scheme that:
a resonant cavity sensor calibration and temperature and conductivity testing device comprises: a computer, a vector network analyzer, a resonant cavity to be tested, a test tube section, a transparent scale view port and an electronic scale, which is characterized in that,
a computer: outputting a control instruction of the vector network analyzer, controlling the working mode of the vector network analyzer and the transmission and reception of signals, and acquiring test data of the vector network analyzer on the resonant cavity to be tested;
vector network analyzer: receiving an instruction of a computer, executing the setting of relevant parameters of the computer, controlling a signal source to send out an excitation signal, receiving a signal passing through a resonant cavity to be tested, and forming test data, wherein two ports of a vector network analyzer are respectively connected with two ports of the resonant cavity to be tested by adopting test coaxial cables;
testing a pipe section: is provided with a temperature sensor and a conductivity sensor, and is provided with a liquid adding hole and a salt adding hole;
a resonant cavity to be tested: fixed on the periphery of the test pipe section;
transparent scale viewport: used for observing the liquid level height of the pipe section;
electronic scale: the resonant cavity to be tested and the test pipe section are arranged on the electronic scale, and the electronic scale is used for measuring the weight of the liquid.
Preferably, the temperature sensor is closer to one end of the resonant cavity to be measured; and the measuring ends of the temperature sensor and the conductivity sensor are both positioned at the bottom of the test pipe section, and a contact pin type probe is selected.
The liquid adding hole and the salt adding hole are arranged at one end, far away from the temperature sensor end, of the test pipe section, and the liquid adding hole is close to one section of the transparent scale view port.
The test pipe section is inserted into the central axis hole of the resonant cavity to be tested, and the resonant cavity to be tested is arranged at the center of the test pipe section.
The utility model discloses with prior art comparison beneficial effect who has: the experimental calibration of the resonant cavity sensor can be carried out, and the influence factors of temperature and conductivity can be tested; the device can be scientifically, effectively, quickly and accurately calibrated, so that the measurement of temperature, the measurement of conductivity and the measurement of the water content of the test pipeline are more accurate; the measurement of the temperature gradient change and the conductivity gradient change is more effective; the whole experimental research process of the resonant cavity test is completed more quickly.
Drawings
FIG. 1 is a schematic view of the experimental apparatus of the present invention
FIG. 2 is a block diagram of the present invention
101-resonant cavity to be measured, 102-test tube section, 103-transparent scale view port, 104-conductivity sensor, 105-temperature sensor, 106-electronic scale, 107-salt adding hole, 108-liquid adding hole, 201-computer, 202-vector network analyzer
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The present invention will be further explained with reference to the accompanying drawings. As shown in fig. 2, the utility model discloses an experimental apparatus for temperature, conductivity influence factor analysis of resonant cavity sensor, include: 101-resonant cavity to be measured, 102-test tube section, 103-transparent scale view port, 104-conductivity sensor, 105-temperature sensor, 106-electronic scale, 107-salt adding hole, 108-liquid adding hole, 201-computer and 202-vector network analyzer.
The computer 201 controls the vector network analyzer 202 by outputting an instruction, the vector network analyzer 202 receives and executes the instruction and the control instruction of the relevant parameter setting of the computer, controls the emission of an excitation signal, the signal is changed into a test signal through the resonant cavity 101 to be tested, and the vector network analyzer receives the measurement signal, stores the data and transmits the data back to the computer. The temperature and conductivity characteristics of the resonant cavity 101 to be tested are accomplished by testing the pipe segment 102 to produce temperature and conductivity changes.
Further, the computer 201 is connected to the vector network analyzer 202 by a network cable, and two ports of the vector network analyzer 202 are connected to two ports of the resonant cavity 101 to be tested by testing coaxial cables.
Further, the two ends of the test pipe segment 102 are sealed by gluing through the transparent scale view port 103. And a section of the pipe section at one end of the test pipe section 102 is embedded with a conductivity sensor 104 and a temperature sensor 105 respectively at a proper distance on the same straight line, and the conductivity sensor 104 is closer to one end of the resonant cavity 101 to be measured, so that the temperature sensor 105 can measure the temperature change more accurately. The measuring ends of the conductivity sensor 104 and the temperature sensor 105 are both positioned at the bottom of the test pipe section, and a contact pin type probe is selected and inserted into the test pipe section 102. The salt adding hole 107 and the liquid adding hole 108 are arranged at one end of the test pipe section far away from the temperature sensor 105, and the liquid adding holes are close to one section of the transparent scale view port, so that liquid adding is more uniformly distributed on the test pipe section 102, and liquid level fluctuation is smaller during liquid adding.
Further, the conductivity sensor 104 adopts a sensor with a measuring range of 0-5S/m, so that the testing requirement can be basically met, the temperature sensor 105 adopts a sensor with a measuring range of-5-100 ℃, and the response time is less than 5S. The response time is too high and the measurement is inaccurate during time-demanding temperature changes.
Further, the test pipe segment 102 is inserted into the central axial hole of the resonant cavity 101 to be tested, and the sensor 203 to be tested is located at the axial center of the test pipe segment 102.
Further, the test pipe section 102 is equipped with a conductivity sensor 104 and a temperature sensor 105, and the resonant cavity 101 to be tested is placed on an electronic scale 106.
Furthermore, the resonant cavity sensor calibration and temperature and conductivity testing device needs sodium chloride medicines and is completed with the assistance of a liquid shifter. Sodium chloride drugs can change the conductivity of water and pipettors can accurately add liquid volumes at room temperature. And a liquid shifter and an electronic scale dual-metering device are adopted to measure the liquid adding of the test pipe section, so that the operation is more accurate.
Further, the experimental points are designed before the start of the experiment, including the water content gradient change at the time of the experiment, such as 0.1%, the temperature gradient change, such as 2mS/cm, and the conductivity gradient change, such as 5 ℃. The volume of water changes when there is a change in temperature. And measuring by adopting a method of weighing mass.
Further, the resonant cavity measurement calibration method comprises the following steps:
assembling an experimental device, and measuring the mass M of the empty pipe of the test pipe section 102 by using an electronic scale0. Using computer controlled vector network analysisThe instrument collects the data F of the amplitude-frequency curve at the moment0Then, filling with water, and testing the quality M of the full pipe water of the test pipe section 1021Sum amplitude frequency curve data F1. Passing the test pipe segment 102 empty and full quality difference (M)1-M0) Calculating the total volume of the test spool piece 102 by density; adding water quantity delta V by adopting a liquid transfer device, and measuring mass data m0The computer 201 is adopted to control the vector network analyzer 202 to measure the amplitude-frequency curve data f0. And (4) sequentially adding water quantity delta V for testing by using a pipettor until the experiment is finished. And measuring the amplitude-frequency curve data of the corresponding volume water volume for multiple times, averaging, and calculating and calibrating the water content.
Further, testing the influence of salinity on the test of the resonant cavity under a certain water content:
the influence of salinity on the test of the resonant cavity under a certain water content is tested by firstly adding water V with corresponding volume of experimental design1Measuring amplitude-frequency curve data f1Measuring the temperature t1Measuring the conductivity σ0(ii) a Maintaining the temperature t1And (3) invariably, according to salinity calculation, adding a little sodium chloride through a salt adding hole 107, simultaneously observing readings of an electronic scale 106 until the preset mass delta m is reached, shaking the test pipe section 102, and after the sodium chloride is fully dissolved, controlling a vector network analyzer 202 by using a computer 201 to measure amplitude-frequency curve data fs. And records the measured conductivity sigma of the conductivity sensor 104 at that time. The above steps were repeated until the experiment was completed. Measuring the amplitude-frequency curve data f corresponding to the water quantity and the sodium chloride quality in each measurement for multiple times1And fsAverage value of, conductivity σ0Average value of sum sigma, and amplitude-frequency curve data f of calibration steprAnd comparing the average values, and researching the influence of salinity on the water content performance of the resonance cavity.
Further, the influence of the temperature on the test of the resonant cavity under a certain water content is tested:
the influence of temperature on the test of the resonant cavity under a certain water content is tested, and a liquid shifter is firstly used for adding m mass0Boiling water, measuring amplitude-frequency curve data f2According to the temperature interval designed by the experiment, sampling at a certain temperature interval delta TThe computer 201 is used for controlling the vector network analyzer 202 to measure the amplitude-frequency curve data ftData and record the temperature sensor temperature at that time 105 readings. The above steps were repeated until the experiment was completed. Multiple measurements are taken of amplitude-frequency curve data f corresponding to the mass and temperature of water in each measurement2And ftWith the amplitude-frequency curve data f of the calibration steprAnd comparing the average values, and researching the influence of the temperature on the water cut performance of the resonance cavity measurement.
And (5) after the experiment is finished, processing the data acquired in the computer, and evaluating the measurement performance of the resonant cavity by the system.
Claims (4)
1. A resonant cavity sensor calibration and temperature and conductivity testing device comprises: a computer, a vector network analyzer, a resonant cavity to be tested, a testing pipe section, a temperature sensor, a transparent scale viewport and an electronic scale,
a computer: outputting a control instruction of the vector network analyzer, controlling the working mode of the vector network analyzer and the transmission and reception of signals, and acquiring test data of the vector network analyzer on the resonant cavity to be tested;
vector network analyzer: receiving an instruction of a computer, executing the setting of relevant parameters of the computer, controlling a signal source to send out an excitation signal, receiving a signal passing through a resonant cavity to be tested, and forming test data, wherein two ports of a vector network analyzer are respectively connected with two ports of the resonant cavity to be tested by adopting test coaxial cables;
testing a pipe section: is provided with a temperature sensor and a conductivity sensor, and is provided with a liquid adding hole and a salt adding hole;
a resonant cavity to be tested: fixed on the periphery of the test pipe section;
transparent scale viewport: used for observing the liquid level height of the pipe section;
electronic scale: the resonant cavity to be tested and the test pipe section are arranged on the electronic scale, and the electronic scale is used for measuring the weight of the liquid.
2. The testing device of claim 1, wherein the temperature sensor is closer to one end of the resonant cavity under test; and the measuring ends of the temperature sensor and the conductivity sensor are both positioned at the bottom of the test pipe section, and a contact pin type probe is selected.
3. The testing device of claim 1, wherein the filling hole and the salting hole are at an end of the test tube section remote from the temperature sensor end, and the filling hole is near a section of the transparent scale viewing port.
4. The test apparatus as claimed in claim 1, wherein the test tube segment is inserted into the central axis hole of the resonant cavity to be tested, and the resonant cavity to be tested is located at the center of the test tube segment.
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| CN110702701A (en) * | 2019-10-12 | 2020-01-17 | 天津大学 | Resonant cavity sensor calibration and temperature and conductivity testing device and method |
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