CN118089893B - Zero drift early warning monitoring method and device for coriolis force flowmeter - Google Patents
Zero drift early warning monitoring method and device for coriolis force flowmeter Download PDFInfo
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- 230000006854 communication Effects 0.000 claims description 26
- 238000004891 communication Methods 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 15
- 238000013523 data management Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
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- 238000006073 displacement reaction Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
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- 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
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/02—Compensating or correcting for variations in pressure, density or temperature
- G01F15/022—Compensating or correcting for variations in pressure, density or temperature using electrical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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Abstract
The invention provides a coriolis force flowmeter zero drift early warning monitoring method and a coriolis force flowmeter zero drift early warning monitoring device. And finally, the control center compares the stress data with a stress threshold value to judge whether the zero drift exceeds the limit. Therefore, the zero drift phenomenon of the coriolis force flowmeter can be monitored and early-warned without detaching the coriolis force flowmeter, and the on-line monitoring of the coriolis force flowmeter is realized, so that the working period is shortened, and the working flow is simplified.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to a coriolis force flowmeter zero drift early warning detection method and a monitoring device applying the coriolis force flowmeter zero drift early warning detection method.
Background
The coriolis mass flowmeter is a mass flowmeter which uses the modulation effect of fluid mass flow on vibration tube oscillation, namely the coriolis force phenomenon as principle and aims at mass flow measurement, and is widely applied to the industrial fields of petroleum, chemical industry, aerospace, electric power and the like. The coriolis force flowmeter is prone to metering errors in the use environment, and must be monitored in order to avoid problems such as field faults, construction effects, and the like. Particularly, when the coriolis force flowmeter is in temperature change or the measured medium has temperature change, zero drift occurs to the coriolis force flowmeter, so that the metering accuracy of the flowmeter is reduced, the error of the flowmeter is rapidly increased due to the zero drift, and even the coriolis force flowmeter cannot work normally when serious.
Currently, coriolis force flowmeter testing is performed in a laboratory in a conventional manner, i.e., detached from the pipeline. The method is required to be carried out under the condition that the coriolis force flowmeter does not work, the working period is long, the work is easy to be interrupted, and the working process is seriously influenced.
Disclosure of Invention
The invention discloses a coriolis force flowmeter zero drift early warning detection method and a coriolis force flowmeter zero drift early warning detection device, which can realize on-line monitoring of a coriolis force flowmeter, so that the working period is shortened, and the working flow is simplified.
In order to achieve the above object, in a first aspect, the present invention discloses a coriolis force flowmeter zero drift early warning detection method, wherein the flanges at two sides of the coriolis force flowmeter are respectively provided with a stress detection unit, the stress detection units are electrically connected with a communication module, the communication module is electrically connected with a control center, and the coriolis force flowmeter zero drift early warning detection method comprises the following steps:
acquiring a fitting curve of a phase difference between two detection points of the coriolis force flowmeter and stress at the stress detection unit;
setting a stress threshold to the control center;
The stress detection unit acquires stress data of the coriolis flowmeter during operation and transmits the stress data to the control center through the communication module;
The control center compares the stress data with the stress threshold to determine if the zero drift is overrun.
As an alternative embodiment, the obtaining the phase difference and stress fitting curve includes the following steps:
Providing at least 5 simulated pressure loads with different magnitudes, wherein the simulated pressure loads are sequentially applied to two ends of the coriolis force flowmeter flange, and the simulated pressure loads are used for simulating the stress data of the coriolis force flowmeter during operation;
Sequentially measuring the phase difference between two detection points of the coriolis force flowmeter under the action of different simulated pressure loads;
And performing linear fitting on the corresponding relation between the phase difference and the simulated pressure load to obtain the fitting curve.
As an optional implementation manner, after the stress data is compared with a threshold value to determine whether the zero drift exceeds the limit, the coriolis force flowmeter zero drift early warning and monitoring method further includes:
and according to the fitting curve, the control center compensates the apparent flow of the coriolis force flowmeter in real time so as to obtain the actual flow.
As an alternative embodiment, the simulated pressure load includes an axial simulated pressure load and a radial simulated pressure load, the number of the axial simulated pressure load and the radial simulated pressure load being not less than 5 each;
The fitted curve comprises a fitted curve of the axial simulated pressure load and the phase difference, and a fitted curve of the radial simulated pressure load and the phase difference; the stress threshold comprises a radial stress threshold and an axial stress threshold;
the stress detection unit comprises an axial stress detection unit and a radial stress detection unit, wherein the axial stress detection unit is used for detecting the stress data in the axial direction, and the radial stress detection unit is used for detecting the stress data in the radial direction;
The axial direction is a direction parallel to the flow direction of the fluid measured by the coriolis force flowmeter, and the radial direction is a direction perpendicular to the flow direction of the fluid measured by the coriolis force flowmeter.
As an alternative embodiment, the comparing the stress data with a threshold value to determine whether the zero drift exceeds the limit further includes:
and (5) removing the coriolis force flowmeter and correcting or replacing the coriolis force flowmeter.
As an alternative embodiment, the electrical connection of the communication module to the control center is a remote network connection.
In a second aspect, the invention also discloses a monitoring device, and the coriolis force flowmeter zero drift early warning and monitoring method in any one of the embodiments.
As an optional implementation manner, the control center further comprises a data management module, and the data management module is at least used for recording the stress threshold value and the stress data.
As an alternative embodiment, the communication module is covered with a protective shell.
As an alternative embodiment, the stress detection unit is a resistance strain gauge.
Compared with the related art, the invention has the following advantages:
The invention provides a coriolis force flowmeter zero drift early warning monitoring method, which comprises the steps of firstly obtaining a fitting curve of a phase difference between two detection points of a coriolis force flowmeter and stress at a stress detection unit, obtaining an influence rule of the stress on the indication of the coriolis force flowmeter, setting a stress threshold value to a control center according to actual needs and the influence rule, and obtaining stress data of the coriolis force flowmeter during operation by the stress detection unit and transmitting the stress data to the control center through a communication module. And finally, the control center compares the stress data with a stress threshold value to judge whether the zero drift exceeds the limit. Therefore, the zero drift phenomenon of the coriolis force flowmeter can be monitored and early-warned without detaching the coriolis force flowmeter, and the on-line monitoring of the coriolis force flowmeter is realized, so that the working period is shortened, and the working flow is simplified.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of steps of a method for detecting zero drift early warning of a coriolis force flowmeter according to an embodiment of the present invention;
FIG. 2 is a graph showing a phase difference and a radial simulated pressure load, wherein (A) is a simulation result and (B) is a fitted curve;
FIG. 3 is a graph showing a phase difference and an axial simulated pressure load, wherein (A) is a simulation result and (B) is a fitted curve;
fig. 4 is a schematic diagram of a monitoring device according to an embodiment of the present invention.
Reference numerals illustrate:
1. Coriolis force flowmeter; 2. a stress detection unit; 3. a communication module; 4. and a control center.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present invention and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present invention will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The coriolis mass flowmeter is a mass flowmeter which uses the modulation effect of fluid mass flow on vibration tube oscillation, namely the coriolis force phenomenon as principle and aims at mass flow measurement, and is widely applied to the industrial fields of petroleum, chemical industry, aerospace, electric power and the like. The coriolis force flowmeter is prone to metering errors in the use environment, and must be monitored in order to avoid problems such as field faults, construction effects, and the like. Currently, in real-time detection research of a flowmeter, the influence research on external vibration is performed, and when the external vibration frequency is equal to a driving frequency or a coriolis frequency, the external vibration can generate measurement errors. In addition, the vibration of the fluid is affected by the process factors, and the vibration tube flow channel may have fluid pulsation and other phenomena, so that the medium in the flow channel is affected by vibration, process conditions, temperature conditions and the like.
However, the coriolis flowmeter is tested in a laboratory in a conventional manner, i.e., detached from the pipeline. The method is required to be carried out under the condition that the coriolis force flowmeter does not work, the working period is long, the work is easy to be interrupted, and the working process is seriously influenced. Particularly, when the coriolis force flowmeter is in temperature change or the measured medium has temperature change, zero drift occurs to the coriolis force flowmeter, so that the metering accuracy of the flowmeter is reduced, the error of the flowmeter is rapidly increased due to the zero drift, and even the coriolis force flowmeter cannot work normally when serious.
The left side and the right side of the coriolis force flowmeter oscillating tube are respectively provided with a detection point, and detection coils are respectively arranged at the detection points. When in ideal measurement conditions, no liquid is flowing through the oscillating tube, the oscillating tube only receives the main vibration of the excitation signal, and the signals output by the two detection coils should be sinusoidal signals with identical amplitude and phase. When fluid passes through the oscillating tube, the oscillating tube receives main vibration generated by an excitation signal and vibration caused by Coriolis force (Coriolis force for short) of the fluid on the tube wall, and the two vibration synthesis results in that the oscillating tube is distorted at a certain frequency f. When the liquid passes through the detecting coils at the left and right ends of the vibrating tube, there is a time differenceThis causes the signals output by the two detection coils to generate a corresponding phase difference. Phase differenceThe method meets the following conditions:
When the oscillating tube is twisted, the displacement generated on the left and right sides of the oscillating tube Equal large reverse, and satisfies:
mass flow rate of the fluid The method comprises the following steps:
Wherein, The equivalent torsional rigidity of the vibrating tube, the length of the straight tube section of the vibrating tube and the radius of the bent tube section of the vibrating tube are independent of the flow. The displacement formed by twisting the two sides of the vibrating tube is equal in size and opposite in direction, so that the mass flow rate of the fluidIs a phase differenceIs a function of (2).
The direct cause of the "zero drift" is the imbalance of the left and right vibration damping in the oscillator. When coriolis force flowmeters are properly installed, vibration damping at both ends of the vibrating tube can be considered balanced, but is subject to external vibration in the environment of use, temperature changes or theoretical zero installation stress may not be obtained during installation, so that the left and right vibration damping are no longer balanced, and this unbalanced state places additional stress on the location or locations of interest. Therefore, the stress is monitored to judge whether the left vibration damping and the right vibration damping are in a balanced state or within an error allowable range, so that zero drift is monitored.
Based on the method, the invention provides a coriolis force flowmeter zero drift early warning monitoring method, which comprises the steps of firstly obtaining a fitting curve of a phase difference between two detection points of the coriolis force flowmeter and stress at a stress detection unit, obtaining an influence rule of stress on the indication of the coriolis force flowmeter, setting a stress threshold to a control center according to actual needs and the influence rule, and obtaining stress data of the coriolis force flowmeter during operation by the stress detection unit and transmitting the stress data to the control center through a communication module. And finally, the control center compares the stress data with a stress threshold value to judge whether the zero drift exceeds the limit. Therefore, the zero drift phenomenon of the coriolis force flowmeter can be monitored and early-warned without detaching the coriolis force flowmeter, and the on-line monitoring of the coriolis force flowmeter is realized, so that the working period is shortened, and the working flow is simplified.
The technical scheme of the application will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1 to 4 together, in a first aspect, the application provides a method for detecting zero drift of a coriolis force flowmeter 1, wherein a stress detection unit 2 is arranged at flanges at two sides of the coriolis force flowmeter 1, the stress detection unit 2 is electrically connected with a communication module 3, the communication module 3 is electrically connected with a control center 4, and the method for detecting zero drift of the coriolis force flowmeter 1 comprises the following steps:
s10: a fitted curve of both the phase difference between the two detection points of the coriolis force flowmeter 1 and the stress at the stress detection unit 2 is obtained.
And S20, setting a stress threshold value to the control center 4.
The stress threshold should be set taking into account the accuracy required in the practice of coriolis force flowmeter 1, e.g., a stress threshold within 2/1000 of the allowable error should be set less than within 2/100 of the allowable error.
S30: the stress detection unit 2 acquires stress data of the coriolis flowmeter 1 during operation and transmits the stress data to the control center 4 via the communication module 3.
In some embodiments, the communication module 3 may include a signal conditioning unit and a communication unit, where the signal conditioning unit processes the stress data collected by the stress detection unit 2, so as to improve the anti-interference capability of the communication process and the efficiency of the communication process. The communication unit is used for communicating the stress data processed by the signal adjusting unit with the control center 4 in real time. The communication module 3 is electrically connected to the control center 4 by a remote network, and the communication unit may be a LORA system (Long Range wireless communication technology) for example, which can cover a larger Range and meet the demands of distributed arrangement of the coriolis force flowmeter 1. Meanwhile, the signal transmission is stable and reliable, is not easy to be interfered by the outside, and ensures the accuracy and reliability of data.
S40: the control center 4 compares the stress data with a stress threshold to determine if the zero drift is overrun.
When the stress data is less than or equal to the stress threshold, the coriolis mass flowmeter is in a normal measurement condition; if the monitored stress data is greater than the stress threshold, it may be determined that the coriolis mass flowmeter is in an abnormal measurement condition.
Specifically, the step S10 includes:
S11: providing at least 5 simulated pressure loads with different magnitudes, wherein the simulated pressure loads are sequentially applied to two ends of the flange of the coriolis force flowmeter 1, and the simulated pressure loads are used for simulating stress data of the coriolis force flowmeter 1 during operation.
It should be noted that more simulated pressure loads of different magnitudes may be set to obtain more representative fitted curves, such as9, 10 or more, where conditions allow.
S12: and under the action of different simulated pressure loads, the phase difference between the two detection points of the coriolis force flowmeter 1 is measured sequentially.
S13: and performing linear fitting on the corresponding relation between the phase difference and the simulated pressure load to obtain a fitting curve.
In some embodiments, the simulated pressure load may include an axial simulated pressure load and a radial simulated pressure load, each of the number of axial simulated pressure loads and radial simulated pressure loads not less than 5. The fitting curve comprises a fitting curve of axial simulated pressure load and phase difference and a fitting curve of radial simulated pressure load and phase difference; the stress threshold includes a radial stress threshold and an axial stress threshold. The stress detection unit 2 includes an axial stress detection unit 2 and a radial stress detection unit 2, the axial stress detection unit 2 is used for detecting axial stress data, and the radial stress detection unit 2 is used for detecting radial stress data. The axial direction is a direction parallel to the fluid flow direction measured by the coriolis force flowmeter 1, and the radial direction is a direction perpendicular to the fluid flow direction measured by the coriolis force flowmeter 1.
As shown in fig. 2, in order to compare and analyze the influence law obtained by numerical simulation with the strain signal obtained by the stress sensor, a pressure load with unequal magnitudes and vertical upward is applied to the arc surface of the flange at one end of the flowmeter, a fixed constraint is applied to the end face of the flange at the other end of the coriolis force flowmeter 1, and an excitation signal is loaded on the surface of the vibration exciter, so that the numerical simulation is performed. As shown in fig. 2 (a), it can be seen that the radial stress changes with the phase difference approximately linearly, and the rule curve is linearly fitted, and the empirically fitted curve is set as:
the calculated linear fitting curve is shown in the following formula, the linear fitting curve is shown in (B) of FIG. 2, in the formula In order to induce a phase difference in radial stress,For the radial simulation of pressure load:
It is known that the effect of radial stress on the phase difference is approximately linear. From this, the percentage of error that would result in the flow meter per 100MPa pressure load can be calculated from the regular curve. The calculation result shows that the influence rule of the radial stress on the flowmeter in the application direction is +0.02847%/100MPa, and the influence rule of the radial stress on the flowmeter in the downward direction is-0.02847%/100 MPa, so the influence rule of the radial stress on the flowmeter is +/-0.02847%/100 MPa.
Similarly, as shown in fig. 3, axial ballasts with different amplitudes are applied to the inner end surface of the oscillating tube to simulate axial stress under real working conditions, the surface of the vibration exciter is loaded with excitation signals, the change of the axial stress along with the phase difference is approximately linear, as shown in (a) in fig. 3, the rule curve is linearly fitted, and an empirical fitted curve is set as follows:
The calculated linear fitting curve relationship is shown in the following formula, the linear fitting curve is shown in (B) of FIG. 3, wherein For the phase difference caused by the axial stress,For axial pressure load:
From the above equation, the effect of axial stress on the flowmeter phase difference can look like a linear law. From the measurement principle of the coriolis flowmeter, the fluid mass is proportional to the phase difference. The error percentage generated by the maximum flow value of the flowmeter per 100MPa of axial pressure load can be calculated through the phase difference rule curve. The calculation result shows that the influence rule of the axial stress applied to the right on the maximum flow rate of the flowmeter is-0.05465%/100 MPa, and the influence rule of the axial stress applied to the left on the maximum flow rate of the flowmeter is +0.05465%/100MPa, so that the influence rule of the axial stress on the maximum flow rate of the flowmeter is +/-0.05465%/100 MPa. Therefore, the error percentage generated by the maximum flow value of the flowmeter per 100MPa of axial or radial pressure load can be calculated through the phase difference rule curve: 0.05465%/100MPa and 0.02847%/100MPa.
In some embodiments, after the step S40, the method further includes:
S51: according to the fitted curve, the control center 4 compensates the apparent flow of the coriolis force flowmeter 1 in real time to obtain the actual flow.
After the control center 4 obtains the fitting curve, the apparent flow of the coriolis force flowmeter 1 can be compensated according to the rule disclosed by the fitting curve, so as to reduce errors and obtain data closer to the actual flow.
In other embodiments, the step S40 further includes:
S52: the coriolis force flowmeter 1 is removed and corrected or replaced.
When the deviation between the stress data and the stress threshold is found to be larger, the coriolis force flowmeter 1 can be selectively detached to correct or replace the coriolis force flowmeter 1, at this time, the real-time compensation of the control center 4 is not necessarily capable of ensuring that the data close to the actual flow is obtained, and under the early warning of the coriolis force flowmeter 1 zero drift early warning monitoring method provided by the embodiment, the coriolis force flowmeter 1 is manually corrected or replaced in time, so that the loss caused by the failure of the coriolis force flowmeter 1 can be reduced.
In a second aspect, the embodiment of the application further provides a monitoring device, which comprises a coriolis force flowmeter 1, a stress detection unit 2, a communication module 3 and a control center 4. The stress detection unit 2 is arranged on the end part and the arc-shaped surface of the flange in the process of the coriolis flowmeter, and when the stress data changes, the stress detection unit 2 can accurately sense, so that the purpose of monitoring the flow is achieved.
The above describes the coriolis force flowmeter zero drift early warning monitoring method and monitoring device disclosed in the embodiments of the present invention in detail, and specific examples are applied to describe the principles and embodiments of the present invention, and the description of the above embodiments is only used to help understand the coriolis force flowmeter zero drift early warning monitoring method and monitoring device and the core ideas thereof; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the idea of the present invention, the present disclosure should not be construed as limiting the present invention in summary.
Claims (9)
1. The coriolis force flowmeter zero drift early warning and monitoring method is characterized in that the flanges on two sides of the coriolis force flowmeter are respectively provided with a stress detection unit, the stress detection units are electrically connected with a communication module, the communication module is electrically connected with a control center, and the coriolis force flowmeter zero drift early warning and monitoring method comprises the following steps:
Providing at least 5 simulated pressure loads with different magnitudes, wherein the simulated pressure loads are sequentially applied to two ends of the coriolis force flowmeter flange, and the simulated pressure loads are used for simulating the stress data of the coriolis force flowmeter during operation; sequentially measuring the phase difference between two detection points of the coriolis force flowmeter under the action of different simulated pressure loads;
performing linear fitting on the corresponding relation between the phase difference and the simulated pressure load to obtain a linear fitting curve; setting a stress threshold to the control center;
The stress detection unit acquires stress data of the coriolis flowmeter during operation and transmits the stress data to the control center through the communication module;
The control center compares the stress data with the stress threshold to determine if the zero drift is overrun.
2. The coriolis force flowmeter zero drift warning monitoring method of claim 1 wherein said simulated pressure load comprises an axial simulated pressure load and a radial simulated pressure load, said axial simulated pressure load and said radial simulated pressure load each being no less than 5 in number;
The linear fitting curve comprises a fitting curve of the axial simulated pressure load and the phase difference, and a fitting curve of the radial simulated pressure load and the phase difference; the stress threshold comprises a radial stress threshold and an axial stress threshold;
the stress detection unit comprises an axial stress detection unit and a radial stress detection unit, wherein the axial stress detection unit is used for detecting the stress data in the axial direction, and the radial stress detection unit is used for detecting the stress data in the radial direction;
the axial direction is a direction parallel to the fluid flow direction measured by the coriolis force flowmeter, and the radial direction is a direction perpendicular to the fluid flow direction measured by the coriolis force flowmeter.
3. The coriolis force flowmeter zero drift warning monitoring method of claim 1, wherein after comparing the stress data with a threshold to determine if the zero drift is overrun, the coriolis force flowmeter zero drift warning monitoring method further comprises:
and according to the fitting curve, the control center compensates the apparent flow of the coriolis force flowmeter in real time so as to obtain the actual flow.
4. The coriolis force flowmeter zero drift warning monitoring method of claim 1 wherein said stress data is compared to a threshold to determine if zero drift is overrun further comprises:
and (5) removing the coriolis force flowmeter and correcting or replacing the coriolis force flowmeter.
5. The coriolis force flowmeter zero drift warning monitoring method of claim 1 wherein said communication module is electrically connected to said control center by a remote network connection.
6. A monitoring device, characterized in that the coriolis force flowmeter zero drift early warning monitoring method according to any one of claims 1-5 is applied.
7. The monitoring device of claim 6, wherein the control center further comprises a data management module for recording at least the stress threshold, the stress data.
8. The monitoring device of claim 6, wherein the communication module is encased with a protective shell.
9. The monitoring device of claim 6, wherein the stress detection unit is a resistive strain gauge.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1829902A (en) * | 2003-08-04 | 2006-09-06 | 西门子公司 | Mass flow meter |
| CN113899431A (en) * | 2021-09-07 | 2022-01-07 | 上海裕凡实业有限公司 | Mobile flow online calibration system |
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|---|---|---|---|---|
| DE4226391C2 (en) * | 1992-08-10 | 1995-07-20 | Flowtec Ag | Method for detecting a zero point drift of a Coriolis mass flow sensor |
| JP2977130B1 (en) * | 1998-10-21 | 1999-11-10 | 株式会社オーバル | Mass flow meter flow conversion method and flow conversion device |
| WO2005031285A1 (en) * | 2003-08-29 | 2005-04-07 | Micro Motion, Inc. | A method and apparatus for correcting output information of flow measurement apparatus |
| CN102183278B (en) * | 2011-03-04 | 2012-07-04 | 浙江大学 | Method for stabilizing zero point of coriolis mass flowmeter based on auxiliary electromagnet |
| CN104981684B (en) * | 2014-03-24 | 2018-06-05 | 西安东风机电股份有限公司 | The measuring state monitoring method and device of a kind of coriolis mass flowmeters |
| RU2723065C1 (en) * | 2016-10-04 | 2020-06-08 | Майкро Моушн, Инк. | Method of calibrating flow meter and corresponding device |
| CN108548658B (en) * | 2018-01-23 | 2020-09-22 | 电子科技大学 | Method for simultaneously measuring stress and optical loss of single-layer film optical element |
| CN113188637B (en) * | 2021-04-30 | 2022-02-15 | 南京荣晟自动化设备有限公司 | Movable on-line calibrating device for coriolis mass flowmeter by standard meter method |
| CN116067838A (en) * | 2023-02-27 | 2023-05-05 | 西南石油大学 | Drilling fluid rheological measurement while drilling method based on tubular viscometer system |
| CN117705210A (en) * | 2023-12-12 | 2024-03-15 | 中国计量大学 | Digital mass flowmeter and mass flow measuring method |
-
2024
- 2024-04-28 CN CN202410516326.3A patent/CN118089893B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1829902A (en) * | 2003-08-04 | 2006-09-06 | 西门子公司 | Mass flow meter |
| CN113899431A (en) * | 2021-09-07 | 2022-01-07 | 上海裕凡实业有限公司 | Mobile flow online calibration system |
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