CN114910141A - Measuring state monitoring method and device of Coriolis mass flowmeter - Google Patents
Measuring state monitoring method and device of Coriolis mass flowmeter Download PDFInfo
- Publication number
- CN114910141A CN114910141A CN202210586297.9A CN202210586297A CN114910141A CN 114910141 A CN114910141 A CN 114910141A CN 202210586297 A CN202210586297 A CN 202210586297A CN 114910141 A CN114910141 A CN 114910141A
- Authority
- CN
- China
- Prior art keywords
- monitoring terminal
- mass flow
- coriolis mass
- mass flowmeter
- deformation
- 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.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
When the Coriolis mass flowmeter works normally, a deformation detection unit is used for detecting deformation generated under the influence of mass flow, corresponding mass flow is determined according to the detected deformation, and finally the mass flow is compared with the mass flow measured by the Coriolis mass flowmeter, so that the measurement state of the Coriolis mass flowmeter can be determined. The invention does not need to interrupt the normal work of the Coriolis mass flowmeter, thereby having little influence on the production of enterprises.
Description
Technical Field
The invention relates to the technical field of metering equipment, in particular to a measuring state monitoring method and device of a Coriolis mass flowmeter.
Background
Coriolis Mass Flowmeters (CMFs) are metering devices that measure the mass flow of a fluid medium, such as oil, gas, etc., in a pipeline. The mass flow of a medium flowing through the measuring pipe can be determined by calculating the time difference of vibration phases of the inlet end and the outlet end.
Since the coriolis mass flowmeter is one of the measuring devices, the measurement state also needs to be detected. Currently, the testing of the metering apparatus is typically performed periodically, requiring the metering apparatus to be removed from the pipeline and calibrated in a laboratory to determine if the status of the metering apparatus is acceptable. However, the time intervals of such periodic detection are relatively long, and at the shortest, it is required to be once in half a year. The detection mode has the problem of long period, and production operation needs to be interrupted for a long time during detection, so that the influence on enterprises is large.
To address such problems, the prior art has proposed various on-site monitoring methods that eliminate the need to remove the coriolis mass flowmeter and that significantly reduce the impact of the enterprise's interruption of production operations over a relatively short period of time. However, the existing on-site monitoring method still needs to interrupt the production operation for a short time, and cannot monitor the state in the production process.
Disclosure of Invention
The embodiment of the invention provides a measuring state monitoring method and a measuring state monitoring device of a Coriolis mass flowmeter, which are used for solving the problem that production operation needs to be interrupted in a monitoring method in the prior art.
On one hand, the embodiment of the invention provides a measuring state monitoring method of a Coriolis mass flowmeter, wherein a measuring tube of the Coriolis mass flowmeter is provided with a deformation detection unit, and the deformation detection unit is electrically connected with a field monitoring terminal; the method comprises the following steps:
the field monitoring terminal acquires deformation data of the deformation detection unit;
the field monitoring terminal determines the mass flow of the passing medium in the Coriolis mass flowmeter according to the deformation data;
and the field monitoring terminal acquires the mass flow measured by the Coriolis mass flowmeter, compares the determined mass flow with the measured mass flow, and determines the measurement state of the Coriolis mass flowmeter according to the comparison result.
In one possible implementation, a field monitoring terminal determines a mass flow rate through a medium in a coriolis mass flowmeter based on deformation data, including: and the field monitoring terminal determines the mass flow corresponding to the deformation data according to the preset corresponding relation between the deformation and the mass flow.
In one possible implementation, the preset corresponding relationship between the deformation and the mass flow is obtained by measuring the deformation data and the mass flow of the coriolis mass flowmeter in a normal measurement state.
In one possible implementation, when the field monitoring terminal compares the determined mass flow rate with the measured mass flow rate, if the difference between the determined mass flow rate and the measured mass flow rate is less than or equal to the set threshold, the field monitoring terminal determines that the coriolis mass flow meter is in a normal measurement state; if the difference between the determined mass flow and the measured mass flow is greater than the set threshold, the field monitoring terminal determines that the coriolis mass flow meter is in an abnormal measurement state.
In another aspect, an embodiment of the present invention further provides a device for monitoring a measurement state of a coriolis mass flowmeter, including: the system comprises a deformation detection unit and a field monitoring terminal;
the deformation detection unit is arranged on a measuring pipe of the Coriolis mass flowmeter and is electrically connected with the field monitoring terminal;
the field monitoring terminal is used for acquiring deformation data of the deformation detection unit and determining the mass flow of a passing medium in the Coriolis mass flowmeter according to the deformation data;
the field monitoring terminal is also used for acquiring the mass flow measured by the Coriolis mass flowmeter, comparing the determined mass flow with the measured mass flow and determining the measurement state of the Coriolis mass flowmeter according to the comparison result.
In a possible implementation mode, the system further comprises a remote monitoring terminal, wherein the field monitoring terminal is in communication connection with the remote monitoring terminal through a network; and the field monitoring terminal transmits the determined measuring state of the Coriolis mass flowmeter to the remote monitoring terminal.
In a possible implementation manner, the system further comprises a remote server, and the field monitoring terminal and the remote monitoring terminal are in communication connection with the remote server through a network.
In a possible implementation mode, the system further comprises a signal acquisition unit, wherein the signal acquisition unit is electrically connected between the deformation detection unit and the field monitoring terminal; the signal acquisition unit is used for conditioning the signals of the deformation data acquired by the deformation detection unit.
In one possible implementation, the deformation detection unit is a strain gauge.
The measuring state monitoring method and the device of the Coriolis mass flowmeter have the following advantages that:
when the Coriolis mass flowmeter works normally, the deformation generated under the influence of mass flow is detected by the deformation detection unit, corresponding mass flow is determined according to the detected deformation, and finally the measured mass flow is compared with the mass flow measured by the Coriolis mass flowmeter, so that the measuring state of the Coriolis mass flowmeter can be determined. The invention does not need to interrupt the normal work of the Coriolis mass flowmeter, thereby having little influence on the production of enterprises.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flow chart of a measurement condition monitoring method of a coriolis mass flowmeter according to an embodiment of the present invention;
fig. 2 is a schematic view of a measurement state monitoring device of a coriolis mass flowmeter according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Fig. 1 is a flowchart of a measurement condition monitoring method of a coriolis mass flowmeter according to an embodiment of the present invention. The invention provides a measuring state monitoring method of a Coriolis mass flow meter, wherein a measuring tube of the Coriolis mass flow meter 100 is provided with a deformation detecting unit 110, and the deformation detecting unit 110 is electrically connected with a field monitoring terminal 200; the method comprises the following steps:
the field monitoring terminal 200 acquires deformation data of the deformation detection unit 110;
the field monitoring terminal 200 determines the mass flow of the passing medium in the coriolis mass flowmeter 100 according to the deformation data;
the field monitoring terminal 200 acquires the mass flow measured by the coriolis mass flowmeter 100, compares the determined mass flow with the measured mass flow, and determines the measurement state of the coriolis mass flowmeter 100 based on the comparison result.
Illustratively, although the measuring tube of the coriolis mass flowmeter 100 is rigid, it still has a certain elasticity, when the medium flows in the measuring tube, there will be a small deformation at the inlet end and the outlet end of the measuring tube under the impact of the medium, and there is a direct relationship between the amount of the deformation and the magnitude of the mass flow rate, i.e. the larger the mass flow rate, the larger the deformation of the measuring tube, so that the mass flow rate of the medium passing through the coriolis mass flowmeter 100, called the true mass flow rate, can be determined by measuring the deformation of the measuring tube. While the mass flow rate of the medium measured by the coriolis mass flowmeter 100 is referred to as the measured mass flow rate, if the measured mass flow rate is the same as the true mass flow rate or has only a small difference, it can be determined that the measurement state of the coriolis mass flowmeter 100 is normal. Otherwise, it may be determined that an anomaly exists in the measurement state of coriolis mass flowmeter 100.
In the embodiment of the present invention, the field monitoring terminal 200 is disposed near the coriolis mass flowmeter 100 to be monitored, and specifically, the field monitoring terminal 200 may be disposed on a pipeline where the coriolis mass flowmeter 100 is located, and a protection box may be disposed outside the field monitoring terminal 200 to provide a good working environment for the field monitoring terminal 200.
In one possible embodiment, the in situ monitoring terminal 200 determines the mass flow through the media in the coriolis mass flowmeter 100 based on the deformation data, comprising: the field monitoring terminal 200 determines the mass flow corresponding to the deformation data according to the preset corresponding relationship between the deformation and the mass flow.
For example, the preset corresponding relationship between the deformation and the mass flow rate may be obtained in two ways, one is that when the coriolis mass flowmeter 100 to be monitored or an identical mass flowmeter is in a normal measurement state, a plurality of mass flow rates are tested in a laboratory, then the deformation of the measurement tube at each mass flow rate is measured, coordinate points between the mass flow rate and the deformation are drawn in a coordinate system, and a relationship curve between the mass flow rate and the deformation is obtained by fitting the plurality of coordinate points. When the coriolis mass flowmeter 100 is monitored, the deformation detection unit 110 obtains deformation data of the measurement tube, and the field monitoring terminal 200 can determine the mass flow corresponding to the current deformation data according to a relation curve between the mass flow and the deformation.
Another way to obtain the preset corresponding relationship between deformation and mass flow is as follows: the deformation of the monitored coriolis mass flowmeter 100 is detected by the deformation detecting unit 110, and in a normal measurement state, the field monitoring terminal 100 draws and fits a relationship curve between the deformation detected by the deformation detecting unit 110 and the mass flow measured by the coriolis mass flowmeter 100.
In one possible embodiment, when the field monitoring terminal 200 compares the determined mass flow rate with the measured mass flow rate, if the difference between the determined mass flow rate and the measured mass flow rate is less than or equal to the set threshold, the field monitoring terminal 200 determines that the coriolis mass flowmeter 100 is in a normal measurement state; if the difference between the determined mass flow rate and the measured mass flow rate is greater than the set threshold, the in situ monitoring terminal 200 determines that the coriolis mass flowmeter 100 is in an abnormal measurement state.
Illustratively, the threshold value is set to 1%, and when the ratio of the difference between the determined mass flow rate and the measured mass flow rate to the determined mass flow rate is less than or equal to 1%, the measurement state of the coriolis mass flowmeter 100 is determined to be normal. Otherwise, the measurement state of the coriolis mass flowmeter 100 is determined to be abnormal.
The present invention also provides a measurement state monitoring device of a coriolis mass flowmeter, as shown in fig. 2, the device including: the system comprises a deformation detection unit 110 and a field monitoring terminal 200;
the deformation detection unit 110 is arranged on a measuring pipe of the coriolis mass flowmeter 100, and the deformation detection unit 110 is electrically connected with the on-site monitoring terminal 200;
the field monitoring terminal 200 is configured to obtain deformation data of the deformation detection unit 110, and determine a mass flow rate of a medium passing through the coriolis mass flowmeter 100 according to the deformation data;
the field monitoring terminal 200 is further configured to acquire the mass flow rate measured by the coriolis mass flowmeter 100, compare the determined mass flow rate with the measured mass flow rate, and determine the measurement state of the coriolis mass flowmeter 100 according to the comparison result.
In a possible embodiment, the system further comprises a remote monitoring terminal 300, wherein the on-site monitoring terminal 200 is in communication connection with the remote monitoring terminal 300 through a network; the field monitoring terminal 200 transmits the determined measurement status of the coriolis mass flowmeter 100 to the remote monitoring terminal 300.
Illustratively, because the field monitoring terminal 200 is located near the coriolis mass flowmeter 100 being monitored, a technician needs to arrive at the field to know the monitoring results, increasing the technician's labor intensity. Therefore, the remote monitoring terminal 300 is adopted to receive the monitoring result obtained by the on-site monitoring terminal 200, if the monitoring result indicates that the measurement state of the coriolis mass flowmeter 100 is abnormal, the remote monitoring terminal 300 can send an alarm, and a technician can go to the site after acquiring the alarm information.
In an embodiment of the present invention, the on-site monitoring terminal 200 and the remote monitoring terminal 300 are communicatively connected through a remote server, the on-site monitoring terminal 200 may be communicatively connected to the remote server through a wireless network, such as a cellular network or WiFi, and the remote monitoring terminal 300 may also be communicatively connected to the remote server through a wireless network, such as a cellular network or WiFi.
In a possible embodiment, the monitoring system further comprises a signal acquisition unit, wherein the signal acquisition unit is electrically connected between the deformation detection unit 110 and the field monitoring terminal 200; the signal acquisition unit is used for performing signal conditioning processing on the deformation data acquired by the deformation detection unit 110.
Illustratively, the signal conditioning processing of the deformation data by the signal acquisition unit includes amplification and filtering. Since the deformation of the measuring tube of the coriolis mass flowmeter 100 is very small, and therefore the electrical signal output by the deformation detecting unit 110 is also very small, the signal needs to be amplified first, and after the power of the signal is sufficiently large, the signal is filtered to remove noise and interference in the signal.
In one possible embodiment, the deformation detecting unit 110 is a strain gauge.
The strain gauges are illustratively resistive strain gauges whose sensing accuracy is well in line with the measurement requirements for measuring the deformation of the measurement tube of coriolis mass flowmeter 100.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A measuring state monitoring method of a coriolis mass flowmeter, characterized in that a deformation detecting unit (110) is arranged on a measuring tube of the coriolis mass flowmeter (100), and the deformation detecting unit (110) is electrically connected with an on-site monitoring terminal (200); the method comprises the following steps:
the field monitoring terminal (200) acquires deformation data of the deformation detection unit (110);
the field monitoring terminal (200) determines the mass flow rate through the media in the coriolis mass flowmeter (100) from the deformation data;
the field monitoring terminal (200) acquires the mass flow measured by the Coriolis mass flowmeter (100), compares the determined mass flow with the measured mass flow, and determines the measurement state of the Coriolis mass flowmeter (100) according to the comparison result.
2. The method of monitoring a measurement condition of a coriolis mass flowmeter of claim 1, wherein said in-situ monitoring terminal (200) determining a mass flow rate through a media in said coriolis mass flowmeter (100) based on said deformation data comprises:
and the field monitoring terminal (200) determines the mass flow corresponding to the deformation data according to the preset corresponding relation between the deformation and the mass flow.
3. The method of claim 2, wherein the predetermined strain-to-mass flow relationship is obtained from strain data and mass flow measured for the coriolis mass flowmeter (100) in a normal measurement state.
4. The measurement condition monitoring method of a coriolis mass flowmeter of claim 1, wherein said field monitoring terminal (200) determines that said coriolis mass flowmeter (100) is in a normal measurement condition if a difference between said determined mass flow rate and said measured mass flow rate is less than or equal to a set threshold value when said field monitoring terminal (200) compares said determined mass flow rate and said measured mass flow rate;
the field monitoring terminal (200) determines that the coriolis mass flowmeter (100) is in an abnormal measurement state if the difference between the determined mass flow rate and the measured mass flow rate is greater than a set threshold.
5. An apparatus for applying a method of monitoring a measurement condition of a coriolis mass flowmeter as defined in any one of claims 1 to 4, comprising: the system comprises a deformation detection unit (110) and a field monitoring terminal (200);
the deformation detection unit (110) is arranged on a measuring pipe of the Coriolis mass flowmeter (100), and the deformation detection unit (110) is electrically connected with the on-site monitoring terminal (200);
the field monitoring terminal (200) is used for acquiring deformation data of the deformation detection unit (110) and determining the mass flow of a medium passing through the Coriolis mass flowmeter (100) according to the deformation data;
the field monitoring terminal (200) is further used for acquiring the mass flow measured by the Coriolis mass flowmeter (100), comparing the determined mass flow with the measured mass flow, and determining the measurement state of the Coriolis mass flowmeter (100) according to the comparison result.
6. The measurement condition monitoring device of a coriolis mass flowmeter of claim 5, further comprising a remote monitoring terminal (300), said on-site monitoring terminal (200) being communicatively connected to said remote monitoring terminal (300) via a network;
the on-site monitoring terminal (200) transmits the determined measurement status of the coriolis mass flowmeter (100) to the remote monitoring terminal (300).
7. The measurement condition monitoring device of a coriolis mass flowmeter of claim 6, further comprising a remote server, wherein said field monitoring terminal (200) and said remote monitoring terminal (300) are each communicatively connected to said remote server via a network.
8. The measurement state monitoring device of a coriolis mass flowmeter according to claim 5, further comprising a signal acquisition unit electrically connected between said strain detection unit (110) and a field monitoring terminal (200);
the signal acquisition unit is used for conditioning the deformation data acquired by the deformation detection unit (110).
9. The device for monitoring a measurement state of a coriolis mass flowmeter as set forth in claim 5, wherein said strain detecting unit (110) is a strain gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210586297.9A CN114910141A (en) | 2022-05-26 | 2022-05-26 | Measuring state monitoring method and device of Coriolis mass flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210586297.9A CN114910141A (en) | 2022-05-26 | 2022-05-26 | Measuring state monitoring method and device of Coriolis mass flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114910141A true CN114910141A (en) | 2022-08-16 |
Family
ID=82769357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210586297.9A Pending CN114910141A (en) | 2022-05-26 | 2022-05-26 | Measuring state monitoring method and device of Coriolis mass flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114910141A (en) |
-
2022
- 2022-05-26 CN CN202210586297.9A patent/CN114910141A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105698903B (en) | Method for providing a quality measure for meter verification results | |
| US6915237B2 (en) | Integrated system for verifying the performance and health of instruments and processes | |
| US7478010B2 (en) | Condition monitoring of electrical cables as installed in industrial processes | |
| EP1155289B1 (en) | Flow measurement with diagnostics | |
| JP6300924B2 (en) | Coriolis type device for directly measuring the source and method for measuring the source directly | |
| CN110274669B (en) | Online calibration method for large-diameter electronic water meter | |
| CN101506629A (en) | Flow measurement diagnostics | |
| CN102654410A (en) | Differential pressure based flow measurement | |
| JP5164954B2 (en) | Device diagnostic method and device diagnostic device | |
| JP4858255B2 (en) | Field devices that support abnormality diagnosis by simulation | |
| CN108506740A (en) | A kind of fluid pipeline leakage region based on current meter determines method and system | |
| CN103712669A (en) | Flow gauge online calibration device | |
| JP6419296B2 (en) | Coriolis type device for directly measuring the source and method for measuring the source directly | |
| CN114910141A (en) | Measuring state monitoring method and device of Coriolis mass flowmeter | |
| CN110631646B (en) | Vortex flowmeter supporting flow instability detection | |
| CN110514259A (en) | A kind of detection method of high-precision coriolis meter | |
| KR102451283B1 (en) | Condition monitoring system and method for water treatment equipment | |
| JP3901159B2 (en) | Gas pipe leak monitoring device | |
| CN110987129A (en) | Ultrasonic intelligent water meter fault self-checking and processing system and method | |
| CN209326748U (en) | The device of field monitoring flowmeter performance | |
| CN213067845U (en) | System for detecting errors of pipe network water meter | |
| Silva et al. | Flow4Link-the flow in the hand | |
| JPH0774769B2 (en) | Gas pipeline leak detection method | |
| CN104316099B (en) | A kind of analog sensor monitoring method based on redundant data and system | |
| RU2143669C1 (en) | Process of metrological diagnostics of flowmeters |
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 |