CN110567562A - Automatic calibrating device and method for gas flowmeter - Google Patents
Automatic calibrating device and method for gas flowmeter Download PDFInfo
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- CN110567562A CN110567562A CN201910627082.5A CN201910627082A CN110567562A CN 110567562 A CN110567562 A CN 110567562A CN 201910627082 A CN201910627082 A CN 201910627082A CN 110567562 A CN110567562 A CN 110567562A
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- 238000009434 installation Methods 0.000 claims abstract 2
- 230000001105 regulatory Effects 0.000 claims description 50
- 230000000052 comparative effect Effects 0.000 claims description 15
- 239000000295 fuel oil Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000001568 sexual Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 238000004166 bioassay Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters
Abstract
The invention belongs to the field of aerospace engine verification technical tests, in particular to an automatic verification device and a verification method for a gas flowmeter, wherein the automatic verification device comprises a comparison method verification system, a gas source control system and a computer control system, and the automatic verification device comprises the following steps of starting the computer control system, installing the verified gas flowmeter at the position of a detected gas flowmeter and preparing; adopt with basic platform, can accomplish the flow, pressure, temperature parameter's examination, adopt conventional spare part, the practicality is good, low in manufacturing cost, the sexual valence relative altitude, and is rational in infrastructure, the security is high, adopt the mode of arranging in groups to use, can accomplish the examination to metering DN ═ 5-500 mm's gas flowmeter, adopt same shunt tubes, same collecting pipe, guarantee that each gas of arranging in groups's pipeline keeps unanimous, can automatic continuous examination, and guarantee the accuracy of examination data, adopt above-mentioned calibrating installation to carry out automatic examination to gas flowmeter simultaneously and provide a platform.
Description
Technical Field
the invention belongs to the field of aerospace engine verification technical tests, and particularly relates to an automatic verification device and a verification method for a gas flowmeter.
background
at present, in the aerospace field, accurate measurement of gas flow is more and more emphasized, standard devices for detecting the gas flowmeter are various, a common PVTt method, a standard volume tube method, a bell jar method and a sonic nozzle method are used, wherein the PVTt method and the standard volume tube method are generally only arranged in a flow meter research institution and a measurement department and are used for detecting other standard flowmeters, the bell jar method is mainly suitable for detecting the gas meters with small flow, low differential pressure and small pipe diameter due to limited volume, the sonic nozzle method has a complex structure and is not common, the vortex street flowmeter has the advantages of simple structure, long service life and measuring range without movable parts inside, good repeatability, small pressure loss, high temperature resistance, corrosion resistance and the like, at present, the standard degree of the gas vortex street sensor in China is generally on the level of 0.5-level to 1-level, and the vortex street cannot be used as a 0.5-level standard sensor on the level of accuracy, however, the range of the instrument is very wide, generally ranges from 10: 1 to 15: 1, and the repeatability is good, and is within 0.2% or even higher.
Therefore, the invention adopts the gas flowmeter automatic calibrating device based on the standard vortex street flow sensor combination comparison method, and because the structure is simple and the cost is low, a plurality of small and medium flow meter production enterprises can adopt the gas flowmeter automatic calibrating device as a metering instrument for metering settlement, but the rechecking expense for periodically rechecking a large amount of meters is also a large expenditure.
Disclosure of Invention
to solve the problems set forth in the background art described above. The invention provides an automatic calibrating device and a calibrating method for a gas flowmeter, which have the characteristics of reasonable structural design, grouped use, automatic calibration and calculation of parameters such as flow, temperature, pressure value and the like of the gas flowmeter to be calibrated.
in order to achieve the purpose, the invention provides the following technical scheme: an automatic calibrating device for a gas flowmeter comprises a comparison method calibrating system, a gas source control system and a computer control system.
Preferably, the comparative verification system comprises an air inlet pipe, a flow dividing pipe, a collecting pipe A, a collecting pipe B, an air outlet pipe, an electromagnetic regulating valve, a standard vortex street flow sensor, a thermometer, a pressure gauge, an electromagnetic regulating valve, a detected gas flowmeter, a thermometer, a pressure gauge and an electromagnetic regulating valve, wherein the electromagnetic regulating valve, the standard vortex street flow sensor, the thermometer and the pressure gauge are arranged in groups, the electromagnetic regulating valve is arranged between the flow dividing pipe and the collecting pipe A to form a standard verification system part, the electromagnetic regulating valve, the detected gas flowmeter, the thermometer, the pressure gauge and the electromagnetic regulating valve are arranged in groups between the collecting pipe A and the collecting pipe B to form a detected system part, and multiple groups are arranged in groups for group verification between different diameters.
Preferably, the air source control system comprises a roots blower air source system and a frequency converter adjusting system.
Preferably, the computer control system includes computer hardware, a basic operating system and system control software.
Preferably, the computer control system is connected with the comparative method verification system and the gas source control system through data control lines, and the comparative method verification system is connected with the gas source control system through a fuel oil pipe.
A method of gas flow meter verification comprising the steps of:
a. starting a computer control system, and installing the gas flowmeter to be verified at the gas flowmeter to be tested and preparing;
b. starting a gas source system of the Roots blower and a frequency converter adjusting system to be ready, and ensuring that a gas source is supplied to a gas inlet pipe;
c. After entering a shunt pipe from an air inlet pipe, the gas is shunted to each group of standard verification systems, is converged at a collecting pipe A to ensure that the pressure of each group of gas sources is kept consistent, and is shunted to a system to be verified, so that the flow, the temperature and the pressure value of a gas flowmeter to be verified are verified to confirm whether the gas flowmeter is qualified, wherein after entering the shunt pipe from the air inlet pipe, the gas enters the collecting pipe A through an electromagnetic regulating valve, a standard vortex flow sensor, a thermometer, a pressure gauge and an electromagnetic regulating valve in sequence, then enters the collecting pipe B through the electromagnetic regulating valve, the gas flowmeter to be verified, the thermometer, the pressure gauge and the electromagnetic regulating valve in sequence, and;
d. data of an electromagnetic regulating valve, a standard vortex street flow sensor, a thermometer, a pressure gauge, an electromagnetic regulating valve, a detected gas flowmeter, a thermometer, a pressure gauge and an electromagnetic regulating valve in a comparative method verification system are acquired into a computer control system, and the flow, the temperature and the pressure value of the detected gas flowmeter are automatically verified and calculated through a software system to confirm whether the gas flowmeter is qualified or not.
Compared with the prior art, the invention has the beneficial effects that:
1. The same basic platform is adopted, and the verification of flow, pressure and temperature parameters can be completed;
2. The conventional parts are adopted, so that the practicability is good, the manufacturing cost is low, the cost performance is high, the structure is reasonable, and the safety is high;
3. the gas flow meters with the metering DN (DN) of 5-500mm can be calibrated by adopting a group arrangement mode;
4. the gas of all the pipelines arranged in groups is kept consistent by adopting the same shunt pipe and the same collecting pipe, automatic continuous verification can be realized, the accuracy of verification data is ensured, and meanwhile, the verification device is adopted to automatically verify the gas flowmeter to provide a platform.
drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a comparative assay system of the present invention;
FIG. 3 is a schematic diagram of the air supply control system of the present invention;
FIG. 4 is a schematic diagram of the computer control system architecture of the present invention;
Fig. 5 is a schematic diagram of the operation structure of the present invention.
In the figure: 1. verifying the system by a comparison method; 2. an air supply control system; 3. a computer control system; 4. an air inlet pipe; 5. a shunt tube; 6. a collecting pipe A; 7. a collecting pipe B; 8. an air outlet pipe; 9. an electromagnetic regulating valve; 10. a standard vortex street flow sensor; 11. a thermometer; 12. a pressure gauge; 13. a flow meter of the gas to be detected; 14. a frequency converter regulation system; 15. and a gas source system of the Roots blower.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides the following technical solutions: an automatic calibrating device for a gas flowmeter comprises a comparative method calibrating system 1, a gas source control system 2 and a computer control system 3.
In fig. 1, a computer control system 1 includes computer hardware, a basic operating system, and system control software.
In FIG. 2, a comparative verification system 1 includes an air inlet pipe 4, a shunt pipe 5, a manifold A6, a manifold B7, an air outlet pipe 8, an electromagnetic regulating valve 9-1, a standard vortex shedding flow sensor 10, a thermometer 11-1, a pressure gauge 12-1, an electromagnetic regulating valve 9-2, an electromagnetic regulating valve 9-3, a detected gas flowmeter 13, a thermometer 11-2, a pressure gauge 12-2, and an electromagnetic regulating valve 9-4. the electromagnetic regulating valve 9-1, the standard vortex shedding flow sensor 10, the thermometer 11-1, and the pressure gauge 12-1 are arranged in groups, the electromagnetic regulating valve 9-2 is arranged between the shunt pipe 5 and the manifold A6 to form a standard verification system part, and the electromagnetic regulating valve 9-3, the detected gas flowmeter 13, the thermometer 11-2, the pressure gauge 12-2, and the electromagnetic regulating valve 9-4 are arranged between the manifold A6 and the manifold B7 in groups to form a detected In part, multiple sets are arranged in groups for group verification between different diameters.
in FIG. 3, the air supply control system 2 includes a ROOTS blower air supply system 15 and a frequency converter adjustment system 14.
In fig. 4, the computer control system 3 and the comparative verification system 1 are connected with the gas source control system 2 by a data control line, and the comparative verification system 1 and the gas source control system 2 are connected by a fuel oil pipe.
A method of gas flow meter verification comprising the steps of:
a. Starting the computer control system 3, installing the gas flowmeter to be verified at the gas flowmeter 13 to be tested and preparing;
b. Starting a gas source system 15 of the Roots blower and a frequency converter adjusting system 14 to be ready, and ensuring that a gas source is supplied to the gas inlet pipe 4;
c. after entering a shunt tube 5 from an air inlet tube 4, the gas is shunted to each group of standard verification systems, and is converged at a collecting tube A6 to ensure that the pressure of each group of gas sources is kept consistent, and then is shunted to the system to be verified, so that the flow, temperature and pressure values of the gas flowmeter to be verified are verified to confirm whether the gas flowmeter is qualified, wherein after entering the shunt tube 5 from the air inlet tube 4, the gas enters a collecting tube A6 through an electromagnetic regulating valve 9-1, a standard vortex flow sensor 10, a thermometer 11-1, a pressure gauge 12-1 and an electromagnetic regulating valve 9-2 in sequence, then enters a collecting tube B7 through an electromagnetic regulating valve 9-3, a gas flowmeter to be verified 13, a thermometer 11-2, a pressure gauge 12-2 and an electromagnetic regulating valve 9-4 in sequence, and then;
d. Data of an electromagnetic regulating valve 9-1, a standard vortex street flow sensor 10, a thermometer 11-1, a pressure gauge 12-1, an electromagnetic regulating valve 9-2, an electromagnetic regulating valve 9-3, a detected gas flowmeter 13, a thermometer 11-2, a pressure gauge 12-2 and an electromagnetic regulating valve 9-4 in a comparative method verification system 1 are collected into a computer control system 3, and the flow, the temperature and the pressure value of the detected gas flowmeter are automatically verified and calculated through a software system to confirm whether the gas flowmeter is qualified or not.
the working principle and the using process of the invention are as follows: starting the computer control system 3, installing the detected gas flowmeter at the detected gas flowmeter 13 and preparing, starting the Roots blower gas source system 15 and the frequency converter adjusting system 14 to prepare, ensuring that the gas source is supplied to the gas inlet pipe 4, shunting the gas to each group of standard detecting systems after the gas enters the shunting pipe 5 from the gas inlet pipe 4, converging the gas in the collecting pipe A6 to ensure that the pressure of each group of gas source is kept consistent, and then shunting the gas to the detected system, thereby detecting the flow, the temperature and the pressure value of the detected gas flowmeter 13 to confirm whether the gas flowmeter is qualified or not, wherein the gas enters the shunting pipe 5 from the gas inlet pipe 4, then sequentially passes through the electromagnetic regulating valve 9-1, the standard vortex street flow sensor 10, the thermometer 11-1, the pressure gauge 12-1, the electromagnetic regulating valve 9-2, the collecting pipe A6 and sequentially passes through the electromagnetic regulating valve 9-, The invention adopts the same basic platform to finish the verification of flow, pressure and temperature parameters and adopts conventional parts to automatically verify and calculate the flow, temperature and pressure values of the gas flowmeter 13 to be verified in a software system to confirm whether the gas flowmeter is qualified or not by adopting a software system, the practicality is good, low in manufacturing cost, the sexual valence relative altitude, and is rational in infrastructure, and the security is high, adopts the arrangement mode to use in groups, can measure DN ═ 5-500 mm's gas flowmeter's examination, adopts same shunt tubes 5, and same collecting pipe guarantees that each gas of arranging in groups's pipeline keeps unanimous, can examine and determine in succession automatically to guarantee to examine and determine the accuracy of data.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an automatic calibrating installation of gas flowmeter which characterized in that: the method comprises a comparative method verification system (1), an air source control system (2) and a computer control system (3).
2. An automatic verification device for a gas flowmeter according to claim 1, characterized in that: the comparative method verification system (1) comprises an air inlet pipe (4), a shunt pipe (5), a bus pipe A (6), a bus pipe B (7), an air outlet pipe (8), an electromagnetic regulating valve (9-1), a standard vortex flow sensor (10), a thermometer (11-1), a pressure gauge (12-1), an electromagnetic regulating valve (9-2), an electromagnetic regulating valve (9-3), a detected gas flowmeter (13), a thermometer (11-2), a pressure gauge (12-2) and an electromagnetic regulating valve (9-4), wherein the electromagnetic regulating valve (9-1), the standard vortex flow sensor (10), the thermometer (11-1) and the pressure gauge (12-1) are arranged in groups between the shunt pipe (5) and the bus pipe A (6) to form a standard verification system part, the electromagnetic regulating valve (9-3), the detected gas flowmeter (13), the thermometer (11-2), the pressure gauge (12-2) and the electromagnetic regulating valve (9-4) are arranged between the collecting pipe A (6) and the collecting pipe B (7) in groups to form a detected system part, and the electromagnetic regulating valve, the gas flowmeter and the temperature gauge are arranged in groups to be used for group detection between different diameters.
3. An automatic verification device for a gas flowmeter according to claim 1, characterized in that: the air source control system (2) comprises a Roots blower air source system (15) and a frequency converter adjusting system (14).
4. an automatic verification device for a gas flowmeter according to claim 1, characterized in that: the computer control system (1) comprises computer hardware, a basic operating system and system control software.
5. an automatic verification device for a gas flowmeter according to claim 1, characterized in that: the computer control system (3) is connected with the comparative method verification system (1) and the gas source control system (2) through data control lines, and the comparative method verification system (1) is connected with the gas source control system (2) through a fuel oil pipe.
6. A gas flowmeter verification method is characterized in that: the method comprises the following steps:
a. Starting the computer control system (3), installing the gas flowmeter to be verified at the gas flowmeter (13) to be tested and preparing;
b. starting a gas source system (15) of the Roots blower and a frequency converter adjusting system (14) to be ready, and ensuring that a gas source is supplied to the gas inlet pipe (4);
c. After entering the shunt tubes (5) from the gas inlet pipe (4), the gas is shunted to each group of standard verification systems, the gas sources are converged at a collecting pipe A (6) to ensure that the pressure of each group of gas sources is kept consistent and then are distributed to a system to be detected, thereby detecting the flow, temperature and pressure values of the detected gas flowmeter to confirm whether the gas flowmeter is qualified or not, after entering a shunt pipe (5) from an air inlet pipe (4), the gas enters a collecting pipe A (6) through an electromagnetic regulating valve (9-1), a standard vortex flow sensor (10), a thermometer (11-1), a pressure gauge (12-1) and an electromagnetic regulating valve (9-2) in sequence, then enters a collecting pipe B (7) through the electromagnetic regulating valve (9-3), a detected gas flowmeter (13), the thermometer (11-2), the pressure gauge (12-2) and the electromagnetic regulating valve (9-4) in sequence and is discharged through an air outlet pipe (8);
d. Data of an electromagnetic regulating valve (9-1), a standard vortex flow sensor (10), a thermometer (11-1), a pressure gauge (12-1), an electromagnetic regulating valve (9-2), an electromagnetic regulating valve (9-3), a gas flowmeter to be detected (13), the thermometer (11-2), the pressure gauge (12-2) and the electromagnetic regulating valve (9-4) in a comparative method verification system (1) are collected into a computer control system (3), and the flow, the temperature and the pressure value of the gas flowmeter to be detected are automatically verified and calculated through a software system to confirm whether the gas flowmeter is qualified.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910627082.5A CN110567562A (en) | 2019-07-11 | 2019-07-11 | Automatic calibrating device and method for gas flowmeter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910627082.5A CN110567562A (en) | 2019-07-11 | 2019-07-11 | Automatic calibrating device and method for gas flowmeter |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090044634A1 (en) * | 2006-02-20 | 2009-02-19 | Guenter Weilguny | Apparatus for Measuring the Velocity of a Fluid Flow |
| CN101419088A (en) * | 2008-11-28 | 2009-04-29 | 沈阳黎明航空发动机(集团)有限责任公司 | Calibration device for sonic nozzle gas flowmeter by positive-pressure method and application method |
| CN109696228A (en) * | 2019-03-06 | 2019-04-30 | 成立航空技术有限公司 | A kind of aerospace automatic calibration unit for gas flowmeters and its calibration method |
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2019
- 2019-07-11 CN CN201910627082.5A patent/CN110567562A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090044634A1 (en) * | 2006-02-20 | 2009-02-19 | Guenter Weilguny | Apparatus for Measuring the Velocity of a Fluid Flow |
| CN101419088A (en) * | 2008-11-28 | 2009-04-29 | 沈阳黎明航空发动机(集团)有限责任公司 | Calibration device for sonic nozzle gas flowmeter by positive-pressure method and application method |
| CN109696228A (en) * | 2019-03-06 | 2019-04-30 | 成立航空技术有限公司 | A kind of aerospace automatic calibration unit for gas flowmeters and its calibration method |
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