CN106643989A - Density calibration system and method for mass flow meter - Google Patents
Density calibration system and method for mass flow meter Download PDFInfo
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- CN106643989A CN106643989A CN201611040599.7A CN201611040599A CN106643989A CN 106643989 A CN106643989 A CN 106643989A CN 201611040599 A CN201611040599 A CN 201611040599A CN 106643989 A CN106643989 A CN 106643989A
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- 239000000243 solution Substances 0.000 abstract description 152
- 239000012482 calibration solution Substances 0.000 abstract description 10
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 241000443222 Eosipho coriolis Species 0.000 description 1
- 238000004164 analytical calibration Methods 0.000 description 1
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides a density calibration system and method for a mass flow meter. The system comprises a calibration solution device, which is used to provide calibration solutions with various densities; a solution pump, which is used to provide power to flow the calibration solutions at a certain pressure to a calibration pipe; a standard meter and a plurality of mass flow meters to be measured are uniformly arranged on the calibration pipe along the output end of the solution pump; the standard meter is used to calibrate the density of the solution in the calibration pipe; computers, which are respectively connected with the mass flow meters to be measured, the standard meter and switches are used to control the switches to switch to the calibration solution with different mediums and to calibrate the densities of the mass flow meters, the calculated density calibration coefficients according to density calibration math model are written in the corresponding mess flow meters. The densities of the mass flow meters in different medium are calculated several times by the computers, the densities of the mass flow meters are calculated by the density calibration math model, and the calibration efficiency and accuracy are improved.
Description
Technical field
The invention belongs to instrument calibration technical field, the density calibration system of more particularly to a kind of mass flowmenter and side
Method.
Background technology
Mass flowmenter, i.e. Coriolis force mass flowmenter, it is come the one of R ＆ D design using fluid mechanics principle
Money flow measurement instrument instruments and meters.It is mainly used in measuring gas, the mass flow of liquid and density, and mass flow and density
Parameter needed for the engineerings such as the volume flow, gross mass, the cumulative volume that are derived.The measurable liquid scope of mass flowmenter compares
Extensively, including high viscosity liquid various liquid, the slurries containing solid content, the liquid containing a small amount of uniform gas distribution has foot
The gas of enough density, the such as gas of high pressure.It is total and, it can measure liquid, suspension, the mass flow of emulsion and gas,
Density and temperature.
For the foundation and realization of the mass flow Mathematical Modeling of mass flowmenter, and the stream demarcated is realized aborning
Journey, has substantial amounts of elaboration in many papers at home and abroad, periodical and patent, is available for parametric technique innumerable, but
Mathematical Modeling in terms of density is to the documents and materials referred on scaling method and related calibration facility and few.For quality
For flowmeter, the first parameter is mass flow, and associated with it and correspondence direct proportion output parameter is exactly sensor measuring tube
The phase difference of both sides detection output sinusoidal signal；Second parameter is density, and the intrinsic mechanical frequency in it and sensor itself is related,
The only presence of the second non-parametric density, just has the engineerings such as the volume flow and the cumulative volume that are derived by mass flow and density
Parameter.So being used to measure various Common fluids, unconventional stream in the various fields such as oil, petrochemical industry, papermaking, food, pharmacy
Mass flow will be used during the parameters such as mass flow, density, the volume flow of body, slurries, liquid gas and compressed natural gas
Meter.Therefore, for the raw manufacturer of mass flowmenter, raising improves the design of mass flow meter sensor, production and processing work
Skill, and mass flow caliberating device, density calibration device be most important.
As shown in figure 1, for the structural representation of existing Coriolis force mass flowmenter density calibration system, wherein,
Low pressure cylinder, it is used to deposit the low pressure dry air less than 5 atmospheric pressures；Air valve, it is used to control in low pressure cylinder
Low-pressure gas enters the switch of calibration pipeline；Volumetric solution vessel, it is used to hold the medium solution of density calibration, is generally designated
Solution proportioning in the vessel；Solution inlet port end, it is the initiating terminal of density calibration solution, be designed as it is funneling, be easy to demarcate
Solution flows into the phenomenon of sensor measuring tube road and side leakage free through this port；Calibration pipeline, it is used to demarcate medium solution stream
The passage of Jing；Mass flowmenter, it is the mass flowmenter for treating density calibration；Stationary base mount, it is concrete stake, for fixed dress
Folder treats the mass flowmenter of density calibration；Taphole end, it is the terminal of density calibration pipeline, is designed as funneling, is easy to
Volumetric solution is in the container that this port flows into metered volume；Switch, it is used to control density calibration solution inflow volume appearance
The amount of tool；Volume container, it is used to hold the medium solution of density calibration, while measuring the volume of density calibration solution；Electronics
Claim, it is used for the quality of density calibration solution in metered volume container.
The scaling method flow process of the density calibration system of the mass flowmenter in Fig. 1, details are as follows：
Step 1, mass flowmenter density calibration system is placed in 25 DEG C of constant temperature secret room, while so that air valve and mark
The switch for determining duct end is in closed mode；
Step 2, by mass flowmenter to be measured, mode as shown in Figure 1 carries out being installed in calibration pipeline, and ensures mark
Fixed tube road and mass flowmenter mounting flange are in sealing state, i.e. No leakage phenomenon, while, it is ensured that mass flowmenter housing with
Ground is vertical；
Step 3, the mass flowmenter for treating density calibration is worked on power, while by the mark of more than 5 kinds different densities
Determine solution (medium solution 1, medium solution 2, medium solution 3 ...) to be also positioned in the secret room for density calibration, keeping should
Work under state 180 minutes or so, the whole system that its objective is to make mass flowmenter density calibration and density calibration solution
Temperature or infinite approach identical with secret room temperature；
Step 4, gathers in current 25 DEG C of constant temperature secret room and treats that density calibration mass flowmenter is changed in current calibration pipeline
The blank pipe frequency of output transducer on device；
Step 5, opens the closure above solution inlet port end, and density calibration medium solution 1 is passed through into volumetric solution vessel
Device slowly pours solution inlet port end into, the level change at taphole end is observed, when the top at the close taphole end of liquid level
When, stop solution inlet port end and continue to pour density calibration medium solution 1 into；
Step 6, time delay 2 minutes, when density calibration medium solution 1 is in plateau in calibration pipeline device,
The frequency values of output transducer on collection current Quality flowmeter converter；
Step 7, the slow switch for adjusting calibration pipeline terminal, by the density calibration medium solution 1 in pipeline electricity is emitted into
In the container of sub- upper end, the discharge rate for making density calibration medium solution 1 reaches the position of container 1000ml scale；
Step 8, obtains the quality registration that 1000ml density calibrations medium solution 1 is measured on electronic scale, and by density calibration
Medium solution 1 is refunded in original solution device, and exchange for the drying of identical capacity container place electronic scale above；
Step 9, by the closure above solution inlet port end solution inlet port end, slow adjusting air valve, until demarcating are compressed
Density calibration medium solution 1 in pipeline is driven away outside calibration pipeline, closes air valve；
Step 10, repeat step 5～9 completes other density calibration medium solutions (medium solution 2, medium solution 3 ...)
Demarcation flow process；
Step 11, according to density calibration record data, the bulkfactor of density calibration mass flowmenter is treated in calculating, and will be
Number is write into the EEPROM of mass flowmenter converter by way of button operation；
Step 12, carries out the density accuracy detection and repeatability detection of mass flowmenter；
Step 13, the switch of closure and calibration pipeline terminal above opening solution inlet port end, by density calibration medium
Solution 1 slowly pours solution inlet port end into by volumetric solution capsule means, the change of liquid level in container is observed, when liquid level scale
When being close to 1000ml, the switch of calibration pipeline terminal is closed, continue to pour appropriate density calibration medium into solution inlet port end
Solution 1；
Step 14, finely tunes the aperture of the switch of calibration pipeline terminal, in the drippage value container of density calibration medium solution 1
Reach 1000ml graduation positions position, collection current Quality flowmeter converter output density value and electronic scale metering density calibration
The gross mass of medium solution 1；
Step 15, by the closure above solution inlet port end solution inlet port end is compressed, and finely tunes air valve, until by calibration pipeline
Interior density calibration medium solution 1 is driven away outside calibration pipeline, closes air valve；
Step 16, repeat step 13～15 completes other density verifying process flows for choosing density calibration medium solution；
Step 17, calculates the density output accuracy and repeatability of mass flowmenter.
In existing Coriolis force mass flowmenter density calibration system, 3 mass flowmenters of receiving are at most only capable of
Density calibration and detection, significantly reduce the demarcation efficiency of mass flowmenter；Meanwhile, in the whole flow process demarcated with detection
In, needs will be participated in manually, and the density of volumetric solution be with little container as metered volume, electronic scale gauging calibration solution
Quality, by calculating the density criterion value for determining volumetric solution.However, these factors can bring a certain degree of gauging calibration to miss
Difference, reduces the precision of whole mass flowmenter density calibration system.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of density mark of mass flowmenter
Determine system and method, for solving prior art in mass flowmenter in density calibration, need artificial operation to cause whole matter
The efficiency of amount flowmeter density calibration is low with the low problem of precision.
For achieving the above object and other related purposes, the present invention provides a kind of density calibration system of mass flowmenter,
Including：
Volumetric solution device, it is used to provide various density different volumetric solutions；
Solution pump, it is used to providing power volumetric solution is flowed in calibration pipeline with certain pressure；
Standard scale is uniformly installed on the calibration pipeline with multiple mass flowmenters to be measured along the solution pump output terminal
On；
The standard scale is used for as the density of volumetric solution in calibration pipeline；
Computer, it connects respectively multiple mass flowmenters to be measured, standard scale and switch；It is used to control the switch
The volumetric solution of switching different medium demarcates the density of the mass flowmenter, close by what is calculated according to density calibration Mathematical Modeling
Degree calibration coefficient writes corresponding mass flowmenter.
The present invention also aims to a kind of density calibration method of mass flowmenter is provided, including：
Step 1, initializes density calibration system, it is ensured that mass flowmenter to be measured tends to be steady state；
Step 2, is under empty pipe condition in mass flowmenter, is successively read the frequency of mass flowmenter output to be measured
Value；
Step 3, opens the switch and the switch near standard scale of certain medium volumetric solution device so that this kind of medium
Volumetric solution circulate in calibration pipeline, until the volumetric solution bubble-free flowed in mass flowmenter to be measured is
Only；
Step 4, closes the switch and the switch near standard scale of the volumetric solution device, demarcates in calibration pipeline
Till solution remains static；
Step 5, reads the current density value of standard scale, and is successively read the frequency values of mass flowmenter output to be measured；
Step 6, under the volumetric solution of different medium, repeat step 3 to 5, obtain standard scale density value with it is to be measured
The frequency values of mass flowmenter output；
Step 7, calls density calibration Mathematical Modeling to calculate the bulkfactor of each mass flowmenter to be measured successively, is write
Enter to correspondence mass flowmenter to be measured；
Step 8, under every kind of medium volumetric solution, is repeated several times step 3 to 4, obtains the mark of the multiple demarcation of standard scale
Quasi- density value, and the density value that mass flowmenter to be measured is repeatedly exported；
Step 9, according to standard density value corresponding under medium volumetric solution and the density of mass flowmenter output
Value calculates the precision of mass flowmenter.
As described above, the density calibration system and method for the mass flowmenter of the present invention, has the advantages that：
By by original manually-operated density calibration system replacement for computer controlled automatic density calibration system, phase
Quantity is demarcated every time for original density calibration system and becomes ten by three, improve the efficiency of the demarcation of product；Using
Computer operated switch switches in the volumetric solution of different medium, and the close of mass flowmenter is repeatedly measured under every kind of volumetric solution
Degree, completely without the need for artificially participating in calibration process, calculates the density of mass flowmenter to be measured, no by density calibration Mathematical Modeling
The calibrated error of traditional quality volumetric manner is only prevented, the precision of mass flowmenter density calibration has also been greatly improved；Together
When, constant pressure and flow tank is introduced in density calibration system, eliminate the volumetric solution trickle operationally produced because of solution pump
With the problem of air bubble, the stated accuracy of mass flowmenter is inherently improve.
Description of the drawings
Fig. 1 is shown as the structural representation of the existing Coriolis force mass flowmeter calibration system of present invention offer；
Fig. 2 is shown as a kind of density calibration system construction drawing of mass flowmenter of present invention offer；
Fig. 3 is shown as a kind of example structure figure of the density calibration system of mass flowmenter of present invention offer；
Fig. 4 is shown as a kind of density calibration method flow chart of mass flowmenter of present invention offer.
Specific embodiment
Hereinafter embodiments of the present invention are illustrated by particular specific embodiment, those skilled in the art can be by this explanation
Content disclosed by book understands easily other advantages and effect of the present invention.
Refer to Fig. 2 to Fig. 4.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to
Coordinate the content disclosed in specification, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where effect that can be generated of the invention and the purpose to be reached is not affected, all should still fall in disclosed skill
In the range of art content is obtained and can covered.Meanwhile, in this specification it is cited as " on ", D score, "left", "right", " centre " and
The term of " one " etc., is merely convenient to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness
It is altered or modified, under without essence change technology contents, when being also considered as enforceable category of the invention.
Fig. 2 is referred to, the present invention provides a kind of density calibration system construction drawing of mass flowmenter, including：
Volumetric solution device 1, it is used to provide various density different volumetric solutions；Solution pump 3, it is used to provide power
Volumetric solution is flowed in calibration pipeline with certain pressure；Standard scale 4 is with multiple mass flowmenters 5 to be measured along the solution
The output end of pump 3 is uniformly installed in the calibration pipeline；The standard scale 4 is used for as the density of volumetric solution in calibration pipeline；
Computer 6, it connects respectively multiple mass flowmenters 5 to be measured, standard scale 4 and switch 3；It is used to controlling the switch 3 and cuts
The volumetric solution for changing different medium demarcates the density of the mass flowmenter 5, close by what is calculated according to density calibration Mathematical Modeling
Degree calibration coefficient writes corresponding mass flowmenter 5.
Wherein, the computer 6 can be replaced industrial computer or terminal, and volumetric solution device 1 can be multiple, and each demarcation is molten
Liquid device 1 fills Media density identical volumetric solution；And volumetric solution device 1, solution pump 3, standard scale 4, mass flowmenter 5
Between be connected with each other using calibration pipeline；And the calibration pipeline between the output end and solution pump 3 of each volumetric solution device 1
On be respectively provided with a switch 2, a switch 2 is respectively provided with the calibration pipeline of the input of each volumetric solution device 1 connection,
Switch 2 described herein ensures there was only a kind of calibration pipeline flowing in density calibration system of medium volumetric solution every time.
It is provided between the solution pump 3 and standard scale 4 for controlling the switch of volumetric solution flowing, and arranges herein
Corresponding pass opens 2 can ensure that solution pump 3 is flowed volumetric solution in standard scale 4 by its own power, meanwhile, in switch closure
When, solution pump ceaselessly operates can squeeze the air bubble having in calibration pipeline, wherein, it is described switch 2 be valve, gate with
Magnetic valve, preferably magnetic valve, directly can be controlled by computer 6, and by the remotely control of computer 6 mark of different medium is switched in
Determine solution, the density of mass flowmenter 5 is repeatedly measured under every kind of volumetric solution, completely without the need for artificially participate in calibration process,
The density of mass flowmenter 5 to be measured is calculated by density calibration Mathematical Modeling, has not only prevented the mark of traditional quality volumetric manner
Determine error, the precision of the density calibration of mass flowmenter 5 is also greatly improved.
If required with flow velocity to the pressure of volumetric solution in density calibration system, can be in the solution pump 3 and close
The constant pressure and flow tank for constant current constant voltage is provided between the switch 2 of standard scale 4, by opening the exhaust on constant pressure and flow tank arrangement
Switch, until the volumetric solution of the supply of solution pump 3 is full of to greatest extent constant pressure and flow tank, then closes air discharge cook, its purpose
It is to eliminate in volumetric solution to there is the state of air bubble and the non-constant pressure and flow of volumetric solution, if to arrange constant pressure and constant herein
Stream tank, its must controlling bus connection computer, to realize the purpose of Automated condtrol.
In this application, the computer 6 adopts control with multiple mass flowmenters 5 to be measured, standard scale 4 and switch 2
Bus communication processed, by computer the open and close of instruction controlling switch 2 are sent, and gather standard scale 4 with mass flowmenter 5
Data, according to density calibration Mathematical Modeling each density value of mass flowmenter to be measured 5 and precision are calculated.Wherein, quality to be measured
The number of flowmeter 5 is up to ten, and comparing original at most can only improve the efficiency of demarcation while demarcate three.
In the application, density calibration Mathematical Modeling is as follows：
In formula (1), ρ：The density of mass flowmeter calibration metered media solution, units/kg/M3；Kd：Calibrated and calculated output
Bulkfactor, dimensionless；Fe(25)：The resonant frequency of mass flow meter sensor measurement pipe at a temperature of 25 DEG C of constant temperature, unit
Hz；Fkt：The whole machine material of mass flow meter sensor, the structure correction factor related to temperature, usually often raises or reduces by 1
DEG C, the variable quantity of sensor measuring tube resonant frequency；T：Mass flow meter sensor temperature；Fr：Mass flow meter sensor is surveyed
Actual output frequency during amount pipe full metered media solution, unit Hz；Calculating KdIn the case of, according to the F for readingr
Calculate the density of the medium solution of mass flowmeter calibration.
Also include fixed frame, it is arranged at the mass flowmenter 5 is used to support its work with the both sides of standard scale 4,
The fixed frame is preferably cement support, and density calibration mass flowmenter instrument is treated in its vibration that can not only eliminate pipeline
Affect, it is also possible to eliminate the impact because of the sensor itself s mechanical vibration of mass flowmenter 5 to density calibration.Meanwhile, the fixation machine
Frame is also to treat to play a part of isolation between density calibration overall mass flowmeter 5 online, preventing from treating the quality of density calibration
Influencing each other between flowmeter 5.
As shown in figure 3, a kind of example structure figure of the density calibration system of the mass flowmenter provided for the present invention；Bag
Include：
In the present embodiment, the number of the mass flowmenter 5 for treating density calibration is ten, standard scale 4 and ten matter
Order of the amount flowmeter 5 along the outbound course of solution pump 3 from left to right is respectively arranged in calibration pipeline, the mass flowmenter
5 are used to support the fixed frame of its work with the both sides of standard scale 4.1 point of medium solution device fills respectively different Jie for five
The volumetric solution of matter, wherein, correspond to respectively in the calibration pipeline of the output end of the first to the 5th medium solution device 1 and install first
To the 5th magnetic valve, correspond to respectively in the calibration pipeline of the input of the first to the 5th medium solution device 1 and install the 6th to the
Ten magnetic valves, numbering is that the calibration pipeline of the tenth mass flowmenter 5 (i.e. rightmost mass flowmenter 5) output connects respectively
To the input of each medium solution device 1, so that the volumetric solution of every kind of medium can be weighed after calibration pipeline interior circulation
Newly return to the magnetic valve of medium solution device the 1, the 11st to be installed in the calibration pipeline between solution pump 3 and standard scale 4.
The computer 6 distinguishes connection standard table 4, multiple mass flowmenters 5 and multiple electromagnetism by controlling bus mode
Valve, the volumetric solution of every kind of medium is switched by controlling electromagnetic valve switch, for example, when the 11st magnetic valve is opened, needs to contain
The medium solution device 1 for having the volumetric solution of certain medium opens its magnetic valve, closes other magnetic valves so that this kind of medium
Volumetric solution flow to whole density calibration system, when the volumetric solution of this kind of medium is in calibration pipeline bubble-free and in static
During state, the output frequency of mass flowmenter to be measured is successively read；Each is calculated by density calibration Mathematical Modeling to be measured
The bulkfactor of mass flowmenter, then, repeat the above steps, you can in the case of obtaining one or more medium solution, each
The density of mass flowmenter 5 to be measured, according to the density of mass flowmenter 5 to be measured the essence of corresponding mass flowmenter is calculated
Degree.
Fig. 4 is referred to, a kind of density calibration method of the mass flowmenter provided for the present invention, including：
Step 1, initializes density calibration system, it is ensured that mass flowmenter to be measured tends to be steady state；
Specifically, in initialization procedure, all switches of computer controls are in closed mode to density calibration system, will
Mass flowmenter to be measured is installed in calibration pipeline, it is ensured that mass flowmenter is in sealing state, i.e. No leakage；Standard scale with
Mass flowmenter is both powered up, and computer connects quasi- table, mass flowmenter and magnetic valve by bus marco；For example, it is general to adopt
Time delay a few minutes so that treat the mass flowmenter of density calibration in the empty pipe condition of calibration pipeline or the work shape for tending to be steady
State.
Step 2, is under empty pipe condition in mass flowmenter, is successively read the frequency of mass flowmenter output to be measured
Value；
Step 3, opens the switch and the switch near standard scale of certain medium volumetric solution device so that this kind of medium
Volumetric solution circulate in calibration pipeline, until the volumetric solution bubble-free flowed in mass flowmenter to be measured is
Only；
Step 4, closes the switch and the switch near standard scale of the volumetric solution device, demarcates in calibration pipeline
Till solution remains static；
Step 5, reads the current density value of standard scale, and is successively read the frequency values of mass flowmenter output to be measured；
Step 6, under the volumetric solution of different medium, repeat step 3 to 5, obtain standard scale density value with it is to be measured
The frequency values of mass flowmenter output；
Step 7, calls density calibration Mathematical Modeling to calculate the bulkfactor of each mass flowmenter to be measured successively, is write
Enter to correspondence mass flowmenter to be measured；
Step 8, under every kind of medium volumetric solution, is repeated several times step 3 to 4, obtains the mark of the multiple demarcation of standard scale
Quasi- density value, and the density value that mass flowmenter to be measured is repeatedly exported；
Step 9, according to standard density value corresponding under medium volumetric solution and the density of mass flowmenter output
Value calculates the precision of mass flowmenter.
In the present embodiment, said method flow process is launched that following flow process is obtained, details are as follows：
1. mass flowmenter density calibration systems soft ware in industrial computer (computer) is opened, in closing a whole set of calibration system
All electromagnetic valves；
2. the mass flowmenter instrument of density calibration will be treated according to (along the outbound course of solution pump, that is, leaning on from front to back
The distance of nearly solution pump is front, is rear away from the distance of solution pump) sequentially it is installed on calibration pipeline, it is ensured that No leakage state；
3. power-up initializing treats the mass flow and standard scale of density calibration, and communication bus connects with the bus communication of industrial computer
Mouth is connected；
4. carry out treating the mass flow of density calibration and the communication detection of standard scale, it is ensured that each online mass flow
With standard scale with industrial computer in mass flowmenter density calibration systems soft ware normal communication；
5. mass flowmenter density calibration system in industrial computer is triggered, starts the density calibration stream of online mass flowmenter
Journey；
6. time delay 3 minutes or so, make the mass flow for treating density calibration online be in the state of blank pipe or tend to flat
Steady working condition；
7., according to number order from front to back, collection successively is treated online the mass flow of density calibration in blank pipe
State lower frequency data；
8. by the first magnetic valve in controlling bus unlatching calibration pipeline, the 6th magnetic valve and the 11st magnetic valve, its
Its magnetic valve is closed；
9. under the driving of solution pump, the medium solution in first medium solution containment flow through calibration pipeline, standard scale,
Line treats the mass flowmenter of density calibration, flows back in first medium solution containment further through calibration pipeline after circulation, in the state
Or so delay working several (five) minutes, in the measurement pipe of whole calibration pipeline and the mass flowmenter for treating density calibration online
It is full of and bubble free state by the medium solution in first medium solution containment completely；
10. the first magnetic valve, the 6th magnetic valve and the 11st magnetic valve closed in calibration pipeline by controlling bus, directly
Density calibration medium solution e.g., can reach flat for 1 minute in calmness and without flow regime using time delay in whole calibration pipeline
It is quiet and without flow regime；
The 11. standard density values that standard scale currently output is read by bus, are sequentially successively read treat close online by number
The fixed mass flow of scale output frequency value in this condition；
12. repeat steps 8) -11), complete the density calibration flow process of medium solution in the second to the 5th medium solution device；
Uniquely distinguish the magnetic valve for controlling different, it is specific as follows：
The density calibration of second medium solution containment needs the second magnetic valve, the 7th magnetic valve, the 11st electromagnetism of control
Valve；
The density calibration of the 3rd medium solution device needs the 3rd magnetic valve, the 8th magnetic valve, the 11st electromagnetism of control
Valve；
The density calibration of the 4th medium solution device needs the 4th magnetic valve, the 9th magnetic valve, the 11st electromagnetism of control
Valve；
The density calibration of the 5th medium solution device needs the 5th magnetic valve, the tenth magnetic valve, the 11st electromagnetism of control
Valve；
13. according to enclosed insides density calibration Mathematical Modeling, calculate each mass flowmenter successively in order
Bulkfactor, is written to what bulkfactor was corresponding in turn in online mass flowmenter converter；
14. duplicate detections calculate the density output accuracy of online mass flowmenter；
15. by the first magnetic valve in controlling bus unlatching calibration pipeline, the 6th magnetic valve and the 11st magnetic valve, its
Its magnetic valve is closed；
16. under the driving of solution pump, the medium solution in first medium solution containment flow through calibration pipeline, standard scale,
The mass flowmenter of density calibration is treated online, is flowed back in first medium solution containment further through calibration pipeline after circulation, in the shape
Or so state delay working several (five) minutes, until whole calibration pipeline and the measurement pipe of the mass flowmenter for treating density calibration online
In be full of and bubble free state by the medium solution in first medium solution containment completely；
17. the first magnetic valves closed in calibration pipeline by controlling bus, the 6th magnetic valve and the 11st magnetic valve, directly
Density calibration medium solution e.g., can reach flat for 1 minute in calmness and without flow regime using time delay in whole calibration pipeline
It is quiet and without flow regime；
18. read the standard density value that standard scale is now exported by bus, be successively read treat density online from front to back
The density value that the mass flow of demarcation is exported in this condition, and calculate the precision of mass flowmenter；
19. repeat steps 15) -18), medium solution density in second detection first medium solution containment；
20. mass flowmenter density calibration systems soft ware repeat steps 15) -18), third time detection first medium solution dress
Middle medium solution density is put, the repeatability of online mass flowmenter density output is calculated successively；
21. repeat steps 15) -20), complete the output of medium solution density and repetition in the second to the 5th medium solution device
The calibrating of property；
The online mass flowmenter density calibration of 22. report production users and testing result (precision and repeatability).
In sum, the present invention is by being computer controlled automatic by original manually-operated density calibration system replacement
Density calibration system, demarcates every time quantity and becomes ten by three relative to original density calibration system, improves product
The efficiency of demarcation；The volumetric solution of different medium is switched in using computer operated switch, is repeatedly surveyed under every kind of volumetric solution
The density of amount mass flowmenter, completely without the need for artificially participating in calibration process, by density calibration Mathematical Modeling matter to be measured is calculated
The density of amount flowmeter, has not only prevented the calibrated error of traditional quality volumetric manner, and mass flowmenter is also greatly improved
The precision of density calibration；Meanwhile, constant pressure and flow tank is introduced in density calibration system, eliminate because of solution pump operationally institute
The volumetric solution trickle of product and the problem of air bubble, inherently improve the stated accuracy of mass flowmenter.So, this
It is bright effectively to overcome various shortcoming of the prior art and have high industrial utilization.
The principle and its effect of above-described embodiment only illustrative present invention, it is of the invention not for limiting.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and the scope without prejudice to the present invention to above-described embodiment.Cause
This, such as those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (9)
1. the density calibration system of a kind of mass flowmenter, it is characterised in that include：
Volumetric solution device, it is used to provide various density different volumetric solutions；
Solution pump, it is used to providing power volumetric solution is flowed in calibration pipeline with certain pressure；
Standard scale is uniformly installed in the calibration pipeline with multiple mass flowmenters to be measured along the solution pump output terminal；
The standard scale is used for as the density of volumetric solution in calibration pipeline；
Computer, it connects respectively multiple mass flowmenters to be measured, standard scale and switch；It is used to control the switch switching
The volumetric solution of different medium demarcates the density of the mass flowmenter, according to the density mark that density calibration Mathematical Modeling will be calculated
Determine coefficient and write corresponding mass flowmenter.
2. the density calibration system of mass flowmenter according to claim 1, it is characterised in that the volumetric solution device
For multiple, each volumetric solution device fills the volumetric solution of same density, the output end of each volumetric solution device with it is molten
A switch is respectively provided with calibration pipeline between liquid pump, is all provided with the calibration pipeline of the input connection of each volumetric solution device
Put a switch.
3. the density calibration system of mass flowmenter according to claim 1, it is characterised in that the solution pump and standard
The switch for controlling volumetric solution flowing is provided between table.
4. the density calibration system of the mass flowmenter according to Claims 2 or 3, it is characterised in that the switch is electricity
Magnet valve.
5. the density calibration system of mass flowmenter according to claim 1, it is characterised in that the solution pump and close
The constant pressure and flow tank for constant current constant voltage is provided between the switch of standard scale.
6. the density calibration system of mass flowmenter according to claim 1, it is characterised in that the computer with it is to be measured
Mass flowmenter, standard scale and switch using controlling bus communicate.
7. the density calibration system of mass flowmenter according to claim 1, it is characterised in that also including fixed frame,
It is arranged at the mass flowmenter is used to support its work with the both sides of standard scale.
8. the density calibration system of mass flowmenter according to claim 1, it is characterised in that the quality stream to be measured
The number of gauge is up to ten.
9. a kind of density calibration method of mass flowmenter, it is characterised in that include：
Step 1, initializes density calibration system, it is ensured that mass flowmenter to be measured tends to be steady state；
Step 2, is under empty pipe condition in mass flowmenter, is successively read the frequency values of mass flowmenter output to be measured；
Step 3, opens the switch and the switch near standard scale of certain medium volumetric solution device so that the mark of this kind of medium
Determine solution to circulate in calibration pipeline, till the volumetric solution bubble-free in mass flowmenter to be measured that flows；
Step 4, closes the switch and the switch near standard scale of the volumetric solution device, the volumetric solution in calibration pipeline
Till remaining static；
Step 5, reads the current density value of standard scale, and is successively read the frequency values of mass flowmenter output to be measured；
Step 6, under the volumetric solution of different medium, repeat step 3 to 5 obtains the density value and quality to be measured of standard scale
The frequency values of flowmeter output；
Step 7, calls density calibration Mathematical Modeling to calculate the bulkfactor of each mass flowmenter to be measured successively, be written into
In correspondence mass flowmenter to be measured；
Step 8, under every kind of medium volumetric solution, is repeated several times step 3 to 4, and the standard for obtaining the multiple demarcation of standard scale is close
Angle value, and the density value that mass flowmenter to be measured is repeatedly exported；
Step 9, according to standard density value corresponding under medium volumetric solution and the density value meter of mass flowmenter output
Calculate the precision of mass flowmenter.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144325A (en) * | 2017-06-06 | 2017-09-08 | 重庆川仪自动化股份有限公司 | Mass flowmeter calibration detection means |
| CN107340038A (en) * | 2017-06-06 | 2017-11-10 | 重庆川仪自动化股份有限公司 | Mass flowmenter automatic Calibration and measuring and testing device system and detection method |
| CN111908411A (en) * | 2020-08-06 | 2020-11-10 | 榆林市镇北台网络科技有限公司 | Fluid conveying control device, wine selling machine and fluid conveying control method |
| CN112746004A (en) * | 2021-02-03 | 2021-05-04 | 河北工业大学 | Alcohol content online detection segmented liquor picking equipment based on density |
| CN113588046A (en) * | 2021-07-21 | 2021-11-02 | 杨柳青 | Multi-fluid circulation detection table for processing flow instrument |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001215145A (en) * | 2000-01-31 | 2001-08-10 | Tokiko Techno Kk | Flowmeter calibration system |
| US6360579B1 (en) * | 1999-03-26 | 2002-03-26 | Micro Motion, Inc. | Flowmeter calibration system with statistical optimization technique |
| JP2002243613A (en) * | 2001-02-13 | 2002-08-28 | Oval Corp | Density-measuring method and device using coriolis mass flowmeter |
| CN1890537A (en) * | 2003-12-12 | 2007-01-03 | 恩德斯+豪斯流量技术股份有限公司 | Coriolis mass flowmeter |
| CN101556181A (en) * | 2009-05-20 | 2009-10-14 | 西安东风机电有限公司 | Composite static start-stop method mass flowmeter calibration system |
| US20110184667A1 (en) * | 2010-01-28 | 2011-07-28 | Krohne Ag | Method for determining at least one characteristic for the correction of measurements of a coriolis mass flowmeter |
| CN202547738U (en) * | 2012-03-30 | 2012-11-21 | 宁波埃美柯水表有限公司 | Automatic high-performance flow calibration system |
| CN102944292A (en) * | 2012-11-28 | 2013-02-27 | 柳青 | Car air quality flow meter calibration device and calibration method |
| CN103063276A (en) * | 2012-12-27 | 2013-04-24 | 重庆川仪自动化股份有限公司 | Electromagnetic flowmeter verification system |
| CN202956170U (en) * | 2012-10-17 | 2013-05-29 | 广东省计量科学研究院 | Online calibration standard device of standard meter method liquid flow meter |
| CN103234606A (en) * | 2013-04-19 | 2013-08-07 | 睿能太宇（沈阳）能源技术有限公司 | System and method for verifying flow rate |
| CN103674194A (en) * | 2013-12-31 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Verification system and verification method of electromagnetic flowmeter |
| CN104764510A (en) * | 2015-04-23 | 2015-07-08 | 江苏博克斯自动化控制工程有限公司 | Calibration system for full-automatic direct-inserted hot type gas mass-flow meter and application thereof |
| CN105181040A (en) * | 2015-09-25 | 2015-12-23 | 辽宁聚焦科技有限公司 | Method for digitized calibration and optimization of difference pressure flow meter |
| CN206321315U (en) * | 2016-11-22 | 2017-07-11 | 重庆川仪自动化股份有限公司 | The density calibration system of mass flowmenter |
-
2016
- 2016-11-22 CN CN201611040599.7A patent/CN106643989B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6360579B1 (en) * | 1999-03-26 | 2002-03-26 | Micro Motion, Inc. | Flowmeter calibration system with statistical optimization technique |
| JP2001215145A (en) * | 2000-01-31 | 2001-08-10 | Tokiko Techno Kk | Flowmeter calibration system |
| JP2002243613A (en) * | 2001-02-13 | 2002-08-28 | Oval Corp | Density-measuring method and device using coriolis mass flowmeter |
| CN1890537A (en) * | 2003-12-12 | 2007-01-03 | 恩德斯+豪斯流量技术股份有限公司 | Coriolis mass flowmeter |
| CN101556181A (en) * | 2009-05-20 | 2009-10-14 | 西安东风机电有限公司 | Composite static start-stop method mass flowmeter calibration system |
| US20110184667A1 (en) * | 2010-01-28 | 2011-07-28 | Krohne Ag | Method for determining at least one characteristic for the correction of measurements of a coriolis mass flowmeter |
| CN202547738U (en) * | 2012-03-30 | 2012-11-21 | 宁波埃美柯水表有限公司 | Automatic high-performance flow calibration system |
| CN202956170U (en) * | 2012-10-17 | 2013-05-29 | 广东省计量科学研究院 | Online calibration standard device of standard meter method liquid flow meter |
| CN102944292A (en) * | 2012-11-28 | 2013-02-27 | 柳青 | Car air quality flow meter calibration device and calibration method |
| CN103063276A (en) * | 2012-12-27 | 2013-04-24 | 重庆川仪自动化股份有限公司 | Electromagnetic flowmeter verification system |
| CN103234606A (en) * | 2013-04-19 | 2013-08-07 | 睿能太宇（沈阳）能源技术有限公司 | System and method for verifying flow rate |
| CN103674194A (en) * | 2013-12-31 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Verification system and verification method of electromagnetic flowmeter |
| CN104764510A (en) * | 2015-04-23 | 2015-07-08 | 江苏博克斯自动化控制工程有限公司 | Calibration system for full-automatic direct-inserted hot type gas mass-flow meter and application thereof |
| CN105181040A (en) * | 2015-09-25 | 2015-12-23 | 辽宁聚焦科技有限公司 | Method for digitized calibration and optimization of difference pressure flow meter |
| CN206321315U (en) * | 2016-11-22 | 2017-07-11 | 重庆川仪自动化股份有限公司 | The density calibration system of mass flowmenter |
Non-Patent Citations (1)
| Title |
|---|
| 王宏伟;戚翠红;刘灿;杜衍华;: "原油科里奥利质量流量计检定系统的设计和应用", 工业计量, no. 1, pages 57 - 61 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144325A (en) * | 2017-06-06 | 2017-09-08 | 重庆川仪自动化股份有限公司 | Mass flowmeter calibration detection means |
| CN107340038A (en) * | 2017-06-06 | 2017-11-10 | 重庆川仪自动化股份有限公司 | Mass flowmenter automatic Calibration and measuring and testing device system and detection method |
| CN111908411A (en) * | 2020-08-06 | 2020-11-10 | 榆林市镇北台网络科技有限公司 | Fluid conveying control device, wine selling machine and fluid conveying control method |
| CN112746004A (en) * | 2021-02-03 | 2021-05-04 | 河北工业大学 | Alcohol content online detection segmented liquor picking equipment based on density |
| CN113588046A (en) * | 2021-07-21 | 2021-11-02 | 杨柳青 | Multi-fluid circulation detection table for processing flow instrument |
| CN113588046B (en) * | 2021-07-21 | 2024-07-12 | 广东晟信仪表电气有限公司 | Circulation detection table for processing multi-fluid flow meter |
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