CN110298137A - Optimize the emulation mode of flowmeter structure parameter - Google Patents
Optimize the emulation mode of flowmeter structure parameter Download PDFInfo
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- CN110298137A CN110298137A CN201910613562.6A CN201910613562A CN110298137A CN 110298137 A CN110298137 A CN 110298137A CN 201910613562 A CN201910613562 A CN 201910613562A CN 110298137 A CN110298137 A CN 110298137A
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- 238000004088 simulation Methods 0.000 claims abstract description 27
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 238000004364 calculation method Methods 0.000 claims abstract description 18
- 238000004458 analytical method Methods 0.000 claims abstract description 6
- 238000005094 computer simulation Methods 0.000 claims abstract description 6
- 238000007781 pre-processing Methods 0.000 claims abstract description 4
- 238000005457 optimization Methods 0.000 claims abstract 6
- FKLFBQCQQYDUAM-UHFFFAOYSA-N fenpiclonil Chemical compound ClC1=CC=CC(C=2C(=CNC=2)C#N)=C1Cl FKLFBQCQQYDUAM-UHFFFAOYSA-N 0.000 claims description 3
- 229910017435 S2 In Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 17
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000000153 supplemental effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- Mathematical Analysis (AREA)
- Computational Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention provides a kind of emulation modes for optimizing flowmeter structure parameter, comprising the following steps: utilizes known operating condition, carries out simulation modeling to the structural parameters of flowmeter；S2: the automatic Calibration value of flow coefficient is obtained using fluid calculation by pre-processing；S3: theory analysis and modeling are carried out to the supplemental characteristic of the automatic Calibration value, obtain the optimum structure parameter of flowmeter.The present invention is mainly analyzed by analogue simulation to fluid and data, and the structure optimization parameter of flow meter is obtained.This method can improve the measurement accuracy of flowmeter and be demarcated by software simulation to discharge coefficient, and substantially save the cost, application prospect are extensive.
Description
Technical field
The present invention relates to the technical field of flowmeter design, in particular to a kind of emulation side for optimizing flowmeter structure parameter
Method.
Background technique
Fluid is a kind of substance without fixing form and can flow freely, because there was only gas and liquid in nature
It can flow, so liquids and gases are referred to as fluid；Again because fluid has gabarit (channel or pipeline), belong in gabarit
A kind of substance be sometimes referred to as be medium.
In the present of industrial measurement and control technology made rapid progress, industrial products need to improve itself competition by regenerating upgrading
Power.By taking the flowmeter for measuring fluid as an example, research expenditure essentially consists in multiple die sinking, and manual testing and energy loss etc. are taken
With valuableness, it is not easy to implement.And analogue simulation is easy to be received by producer as a kind of high-tech, low consumed supplementary means.
Summary of the invention
The purpose of the present invention is to provide a kind of emulation modes for optimizing flowmeter structure parameter, to solve existing flow
Family planning is existing dependent on artificial experiment when producing, the period is long, it is costly, be not easy real-time problem.
To achieve the above object, the present invention provides a kind of emulation mode for optimizing flowmeter structure parameter, feature exists
In, comprising the following steps:
S1: utilizing known operating condition, carries out simulation modeling according to the structural parameters of flowmeter；
S2: the automatic Calibration value of flow coefficient is obtained using fluid calculation by pre-processing；
S3: being compared the automatic Calibration value with actual value, obtains best simulation result by correcting simulation parameter；
S4: changing the structural parameters of flowmeter, obtains optimum flow coefficient calibration value using this emulation mode；
S5: according to the step S4, the optimum structure parameter of flow meter is determined.
Preferably, the structural parameters include: preceding pressure face angle [alpha], rear pressure face angle beta, middle line to preceding pressure face
The distance b and aperture d of distance a, middle line to rear pressure face.
Preferably, including: to establish software interface and interface in the step S1, wherein the software interface is for inputting
The suction parameter and the number of iterations of structural parameters, simulation calculation, the interface are used to join the entrance of structural parameters, simulation calculation
Several and the number of iterations data are attached, to go on smoothly the calculating of step S2.
Preferably, in the step S1: then calling solidworks modeling first uses hypermesh grid division
Figure, then boundary graph is defined using gambit, fluent is finally called, and establish interface and connect each software effective element completion emulation
Modeling.
Preferably, in the step S2: when carrying out the simulation calculation of fluid to the structural parameters using fluent, according to
Different medium pipeline, fluid type carry out emulation independently, under the conditions of obtaining different medium pipelines, fluid type
The automatic Calibration value of the discharge coefficient of coincidence loss demand.
Preferably, in the step S3 further include: the data that simulation calculation obtains are compared with actual data, if
Error is less than preset threshold, then enters step S4, otherwise modifies returning again to step S1 after the simulation parameter and continue to execute.
Preferably, including: to be saved to the data of the simulation parameter in the step S4；To the simulation parameter
Data carry out theory analysis and modeling using pre-established model, obtain optimum structure parameter.
The present invention mainly demarcates discharge coefficient by the simulation calculation of structural modeling and fluid to flowmeter, and
By the comparison with canonical measure value, the optimum structure parameter of flow meter is obtained by the method for data modeling.This method can
The measurement accuracy of flowmeter is improved, and can be simulated by software and discharge coefficient is demarcated, substantially save the cost, application prospect
Extensively.
Detailed description of the invention
Fig. 1 is the method for the present invention overall flow figure；
Fig. 2 is the specific flow chart of preferred embodiment.
Specific embodiment
Below with reference to attached drawing of the invention, the technical scheme in the embodiment of the invention is clearly and completely described
And discussion, it is clear that as described herein is only a part of example of the invention, is not whole examples, based on the present invention
In embodiment, those of ordinary skill in the art's every other implementation obtained without making creative work
Example, belongs to protection scope of the present invention.
For the ease of the understanding to the embodiment of the present invention, make by taking specific embodiment as an example below in conjunction with attached drawing further
It illustrates, and each embodiment does not constitute the restriction to the embodiment of the present invention.
As shown in Figure 1, a kind of emulation mode for optimizing flowmeter structure parameter provided in this embodiment, which is characterized in that
The following steps are included:
S1: utilizing known operating condition, carries out simulation modeling according to the structural parameters of flowmeter；
S2: the automatic Calibration value of flow coefficient is obtained using fluid calculation by pre-processing；
S3: being compared the automatic Calibration value with actual value, obtains best simulation result by correcting simulation parameter；
S4: changing the structural parameters of flowmeter, obtains optimum flow coefficient calibration value using this emulation mode；
S5: according to the step S4, the optimum structure parameter of flow meter is determined.
Wherein, the structural parameters of flowmeter include: that preceding pressure face angle [alpha], rear pressure face angle beta, middle line arrive in step S1
The distance b and aperture d of the distance a in preceding pressure face, middle line to rear pressure face.It certainly, further include it in other preferred embodiments
He needs the feature for changing and emulating.
This method determines the optimum structure parameter of flowmeter by fluid emulation operation and data analysis and modeling theory,
To which the measurement accuracy for solving industrial flow meter at this stage is relatively low, the higher problem of calibration cost.Using the method for emulation, change
To five main structure parameters of flowmeter: preceding pressure face angle [alpha], rear pressure face angle beta, middle line to preceding pressure face distance a,
For middle line to the distance b in rear pressure face, aperture d carries out fluid calculation, and carries out analysis and modeling to data, finally determines flowmeter
Optimum structure parameter.Meanwhile this method can demarcate discharge coefficient α by emulation, and then effectively reduce error, save
About cost, practicability are good.
It is further preferred that including: to establish software interface and interface in above-mentioned step S1, wherein the software interface
For input structure parameter, the suction parameter of simulation calculation and the number of iterations, the interface is used for structural parameters, simulation calculation
Suction parameter and the data of the number of iterations be attached, to go on smoothly the calculating of step S2.In this way, related imitative
It in true interface after the data of input requirements, presses after calculating key, computer backstage can automatic Calibration flow coefficient.
Specifically, in step S1: refering to what is shown in Fig. 2, this method calls solidworks to carry out 3D modeling first, then adopting
Boundary graph is defined with hypermesh grid division figure, then using gambit, finally calls fluent to realize flow rate calculation, and
It establishes interface and connects each software effective element completion simulation modeling, this method applicability is preferable.
It is further preferred that in above-mentioned step S2: using fluent the structural parameters are carried out with the emulation meter of fluid
When calculation, emulation independently is carried out according to different medium pipelines, fluid type, obtains different medium pipelines, fluid class
The automatic Calibration value of the discharge coefficient of coincidence loss demand under the conditions of type.The processing method can simulate different medium tubes
Road, the either most common liquid water or gaseous medium also or dangerous toxic gas can be transferred through this method to simulate
Out close to actual data, operating time and risk are reduced, is had a wide range of application.
Referring again to shown in Fig. 2, in step s3 further include: the supplemental characteristic for obtaining emulation and actual data carry out
Compare, if error is less than preset threshold, enter step S4, otherwise modifies returning again to step S1 after the structural parameters and transport again
Row.Preset threshold in the present embodiment is 1%.In other preferred embodiments, those skilled in the art can change as needed
The actual value of the preset threshold.
Referring again to shown in Fig. 2, above-mentioned step S4 further comprises: protecting to the data of the simulation parameter
It deposits；Theory analysis and modeling are carried out using pre-established model to the data of the simulation parameter, obtain optimum structure parameter.Tool
Body carries out pivot analysis and modeling to obtained emulation data, obtains the optimal value of above-mentioned five structural parameters, and determining pair
Flowmeter error influences maximum structural parameters as optimal characteristics parameter.
In addition, further including carrying out die sinking verifying again to obtained optimal characteristics parameter.Terminating process after verifying is
It can.This method carries out emulation calibration to the discharge coefficient of flowmeter, and build by data by designing reasonable interface and interface
The method of mould obtains optimum structure parameter.This method can substitute the artificial calibration of discharge coefficient, improve the measurement essence of flowmeter
Degree reduces cost, improves quality.
According to investigation, it is about 1000 yuan or so that certain flowmeter factory, which is opened expense, if special media, is opened expense and test
Expense can be higher.One qualified industrial flow meter of manufacture at least needs to be opened for more than 20 times, according to the method for the present invention, then every time
Production new product can save 20,000 yuan or so of expense.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those skilled in the art in the technical scope disclosed by the present invention, to deformation or replacement that the present invention is done, should be covered
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the scope of protection of the claims.
Claims (7)
1. a kind of emulation mode for optimizing flowmeter structure parameter, which comprises the following steps:
S1: utilizing known operating condition, carries out simulation modeling according to the structural parameters of flowmeter；
S2: the automatic Calibration value of flow coefficient is obtained using fluid calculation by pre-processing；
S3: being compared the automatic Calibration value with actual value, obtains best simulation result by correcting simulation parameter；
S4: changing the structural parameters of flowmeter, obtains optimum flow coefficient calibration value using this emulation mode；
S5: according to the step S4, the optimum structure parameter of flow meter is determined.
2. the emulation mode of optimization flowmeter structure parameter according to claim 1, which is characterized in that the structural parameters
Include: preceding pressure face angle [alpha], rear pressure face angle beta, the distance a of middle line to preceding pressure face, middle line to rear pressure face distance b
And aperture d.
3. the emulation mode of optimization flowmeter structure parameter according to claim 1, which is characterized in that in the step S1
It include: to establish software interface and interface, wherein the software interface is used for input structure parameter, the suction parameter of simulation calculation
And the number of iterations, the interface are used to for the data of structural parameters, the suction parameter of simulation calculation and the number of iterations being attached,
To go on smoothly the calculating of step S2.
4. the emulation mode of optimization flowmeter structure parameter according to claim 1 or 3, which is characterized in that the step
In S1: then calling solidworks modeling first uses hypermesh grid division figure, then defines boundary using gambit
Figure, finally calls fluent, and establishes interface and connect each software effective element completion simulation modeling.
5. the emulation mode of optimization flowmeter structure parameter according to claim 1, which is characterized in that the step S2
In: using fluent to the structural parameters carry out fluid simulation calculation when, according to different medium pipelines, fluid type into
The emulation of row independently, obtains the discharge coefficient of the coincidence loss demand under the conditions of different medium pipelines, fluid type
Automatic Calibration value.
6. optimizing the emulation mode of flowmeter structure parameter according to claim 1 or 5, which is characterized in that the step
In S3 further include: be compared the data that simulation calculation obtains with actual data, if error is less than preset threshold, enter
Otherwise step S4 modifies returning again to step S1 after the simulation parameter and continue to execute.
7. the emulation mode of optimization flowmeter structure parameter according to claim 1, which is characterized in that in the step S4
It include: that the data of the simulation parameter are saved；The data of the simulation parameter are managed using pre-established model
By analysis and modeling, optimum structure parameter is obtained.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865587A (en) * | 2016-05-17 | 2016-08-17 | 中国人民解放军63820部队吸气式高超声速技术研究中心 | Calibration method of engine flowmeter |
| CN206321318U (en) * | 2016-12-17 | 2017-07-11 | 重庆川仪自动化股份有限公司 | A kind of permanent-magnet electromagnetic flowmeter on-line proving device |
| CN109443458A (en) * | 2018-11-08 | 2019-03-08 | 天津市天大泰和自控仪表技术有限公司 | A kind of concave arc shape double fluid is to mean velocity tube flowmeter |
| CN109916478A (en) * | 2019-03-26 | 2019-06-21 | 银川融神威自动化仪表厂(有限公司) | A kind of calibration of discharge coefficient, meter proof method and normal flow device |
-
2019
- 2019-07-08 CN CN201910613562.6A patent/CN110298137A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865587A (en) * | 2016-05-17 | 2016-08-17 | 中国人民解放军63820部队吸气式高超声速技术研究中心 | Calibration method of engine flowmeter |
| CN206321318U (en) * | 2016-12-17 | 2017-07-11 | 重庆川仪自动化股份有限公司 | A kind of permanent-magnet electromagnetic flowmeter on-line proving device |
| CN109443458A (en) * | 2018-11-08 | 2019-03-08 | 天津市天大泰和自控仪表技术有限公司 | A kind of concave arc shape double fluid is to mean velocity tube flowmeter |
| CN109916478A (en) * | 2019-03-26 | 2019-06-21 | 银川融神威自动化仪表厂(有限公司) | A kind of calibration of discharge coefficient, meter proof method and normal flow device |
Non-Patent Citations (2)
| Title |
|---|
| 刘亚成: "基于CFD仿真的均速管流量计结构优化设计方法", 《中国优秀硕士学位论文全文数据库工程科技II辑》, no. 3, 15 March 2016 (2016-03-15), pages 030 - 130 * |
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Application publication date: 20191001 |