CN2814357Y - Sound speed nozzle gas flowmeter detector by barotropic process - Google Patents
Sound speed nozzle gas flowmeter detector by barotropic process Download PDFInfo
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- CN2814357Y CN2814357Y CN 200520079012 CN200520079012U CN2814357Y CN 2814357 Y CN2814357 Y CN 2814357Y CN 200520079012 CN200520079012 CN 200520079012 CN 200520079012 U CN200520079012 U CN 200520079012U CN 2814357 Y CN2814357 Y CN 2814357Y
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Abstract
The utility model relates to a sonic nozzle gas flowmeter detecting device which adopts the barotropic method to detect and mark all classes of industrial gas flowmeters. The sonic nozzle gas flowmeter detecting device comprises a gas source, a sonic nozzle standard meter and a detecting workbench, wherein each of the parts is connected through a pipeline. The air source part of the utility model takes the atmosphere as the detecting medium. A gas inlet is orderly connected with a high-pressure blower, a proportioning valve and a buffering container through the pipeline. Since the utility model uses the high-pressure blower to drive the atmosphere, a barotropic voltage stabilized air source with high stability is formed after the regulation of the proportioning valve and the buffering of the buffering container, and the utility model can vividly simulate the operating states of the flowmeters to be detected in order to improve the detecting accuracy of the device. Simultaneously, the utility model has the advantages of low input cost, simple equipment and convenient operation. The ground occupying area of the utility model is smaller than the ground occupying area of a traditional gas flowmeter detecting device by barotropic method.
Description
Technical field
The utility model belongs to the physical technique field, and what further relate to is a kind of sonic nozzle gas meter calibrating installation that adopts positive platen press that all types of industries is tested, demarcated with gas meter.
Background technology
Sonic nozzle gas meter calibrating installation generally is made up of three parts such as source of the gas, sonic nozzle standard scale, calibration operation platforms.After flowmeter to be checked is fixed to the calibration operation platform,, make gas successively by standard scale and flowmeter to be checked by source of the gas part driving gas, the reading of contrast standard table and flowmeter to be checked, thus finish calibration operation.But general sonic nozzle gas meter calibrating installation all is to adopt the negative pressure method at present, and is promptly air-breathing by the source of the gas part, thereby causes negative pressure, drives atmosphere.This gas meter mode of operation to be checked all is at barotropic state, and the data that record with the negative pressure method often can not reflect the truth of flowmeter to be checked, cause verification result not accurate enough.And traditional malleation detection method needs input cost higher, and equipment is various, and floor area is big, seldom adopts during historical facts or anecdotes is trampled.
Summary of the invention
Adopt the negative pressure method in order to remedy sub-sonic orifice gas flowmeter verification device, many defectives of shortcoming that verification result is not accurate enough and malleation detection method, the utility model provides a kind of novel calibrating installation.This device adopts positive platen press, uses high pressure positive blower to drive atmosphere, after the buffering through ratio adjusting valve adjustment and buffer container, forms the very high malleation pressure-stabilized air source of degree of stability, obviously improves the calibrating accuracy.
The technical scheme that the utility model adopted is: positive platen press sonic nozzle gas meter calibrating installation comprises source of the gas, sonic nozzle standard scale, calibration operation platform, and each several part connects by pipeline.As the calibrating medium, contact successively by pipeline and connect high pressure positive blower, ratio adjusting valve and buffering container by the air intake opening of source of the gas with atmosphere for source of the gas.
Pressure-stabilized air source connects ratio adjusting valve by high pressure positive blower by pipeline, is connected to a buffer container.The sonic nozzle standard scale comprises a stagnation container, and the stagnation container has temperature and pressure transducer, can the thermometric pressure measurement.In stagnation container downstream, one group of sonic nozzle is arranged, the corresponding controlled valve of each nozzle, valve downstream connects header.The calibration operation platform is made up of the pipeline of a plurality of bores, has meter-clamping apparatus in the middle of every pipeline, can clamping gas meter to be checked, and there are pressure transducer and temperature sensor in the meter-clamping apparatus upstream.
The beneficial effects of the utility model are, use high pressure positive blower to drive atmosphere, after the buffering through ratio adjusting valve adjustment and buffer container, form the very high malleation pressure-stabilized air source of degree of stability, the duty of realistic simulation flowmeter to be checked more, thereby the calibrating accuracy that improves device.Simultaneously, the utility model input cost is lower, and equipment is simple, and is easy to operate, and is littler than the positive platen press occupation area of equipment of tradition.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Among the figure: the 1-air intake opening; The 2-high pressure positive blower; The 3-gas pipeline; The 4-ratio adjusting valve; The 5-buffer container; The 6-gas piping; 7-stagnation container; The 8-temperature sensor; The 9-pressure transducer; 10-sonic nozzle group; The 11-valve sets; The 12-header; The 13-temperature sensor; The 14-pressure transducer; 15-meter-clamping apparatus group; The 16-industrial computer.
Embodiment
The embodiment 1 of positive platen press sonic nozzle gas meter calibrating installation, it comprises source of the gas, sonic nozzle standard scale, calibration operation platform.Source of the gas is done medium with atmosphere, and air intake opening 1 is contacted successively by pipeline and connected high pressure positive blower 2, ratio adjusting valve 4 and buffering container 5.Valve sets 11 in the sonic nozzle standard scale links to each other respectively with sonic nozzle group 10 on being installed on stagnation container 7, and links to each other with buffer container 5 by pipeline 6.The other end of valve sets 11 links to each other with header 12.Temperature sensor 8 and pressure transducer 9 are installed on stagnation container 7.Header 12 in the calibration operation platform is equipped with meter-clamping apparatus group 15 by pipeline group, and temperature sensor 13 and pressure transducer 14 are installed on pipeline.
The concrete operation method of the utility model embodiment 1 is: flowmeter to be measured is clipped on the meter-clamping apparatus 15 of the corresponding bore of calibration operation platform, after other pipeline of calibration operation platform is lived with blind plate is blind, atmosphere is blown into by air intake opening 1 with high pressure positive blower 2, unnecessary gas is discharged from through ratio adjusting valve 4.After formation is stabilized in the voltage stabilizing gas of certain force value, pass through the buffering of buffer container 5 again, make pressure more steady, gas enters stagnation container 7 by gas piping 6 then, in stagnation container 7 downstreams, one group of sonic nozzle group 10 is arranged, by the valve sets 11 in control sonic nozzle 10 downstreams, can select the sonic nozzle 10 of the switch of wanting arbitrarily, to reach the purpose that changes tested surface low amount.Temperature sensor 8 and pressure transducer 9 are arranged in the stagnation container, realize thermometric, pressure measurement, the substitution formula calculates the mass rate that can obtain by sonic nozzle 10, that is the mass rate by meter-clamping apparatus group 15 places.The temperature and pressure of meter-clamping apparatus group 15 upstream ends of measuring by temperature sensor 13 and pressure transducer 14 can calculate atmospheric density, and then obtain the standard volume flow.To calculate the gained normal flow and the flowmeter flow number of degrees to be checked compare, thereby finish calibrating gas meter to be checked.
The embodiment 2 of positive platen press sonic nozzle gas meter calibrating installation, the air intake opening 1 in the source of the gas part connects high pressure positive blower 2, and ratio adjusting valve 4 links to each other with buffer container 5 by gas piping 3.Wherein high pressure positive blower 2 adopts the high pressure positive blower of frequency control, and ratio adjusting valve 4 adopts electronic ratio adjusting valve.Frequency control high pressure positive blower 2, electronic ratio adjusting valve 4 link to each other with the data acquisition mouth of industrial computer 16 by signal wire respectively.
Valve sets 11 in the sonic nozzle standard scale links to each other respectively with sonic nozzle group 10 on being installed on stagnation container 7, and links to each other with buffer container 5 by gas piping 6.The other end of valve sets 11 links to each other with header 12.Temperature sensor 8 and pressure transducer 9 are installed on the stagnation container 7.Valve sets 11, temperature sensor 8, pressure transducer 9 are connected in the data acquisition mouth of industrial computer 16 respectively by signal wire.Header 12 in the calibration operation platform is equipped with meter-clamping apparatus group 15 by pipeline group.Temperature sensor 13 and pressure transducer 14 are installed on pipeline.Temperature sensor 13, pressure transducer 14 and meter-clamping apparatus group 15 all link to each other with the data acquisition mouth of industrial computer 16 by signal wire.
The concrete operation method of the utility model embodiment 2 is: flowmeter to be measured is clipped on the meter-clamping apparatus 15 of the corresponding bore of calibration operation platform, other pipeline of calibration operation platform is finished whole verification process by operation industrial computer 16 after living with blind plate is blind.Industrial computer 16 drives the ratio of atmosphere and ratio adjusting valve 4 by the rotation speed of fan of control of conversion high pressure positive blower 2, accurately the unnecessary gaseous tension of bypass.Air-flow is further exported to stagnation container 7 by gas pipeline 6 behind the steady pressure by buffer buffers.
In the downstream of stagnation container 7, one group of sonic nozzle group 10 is installed.Industrial computer 16 can be selected the sonic nozzle 10 of the switch of wanting arbitrarily by the valve sets 11 in control sonic nozzle 10 downstreams, to reach the purpose that changes tested surface low amount.Temperature sensor 8 and pressure transducer 9 are arranged in the stagnation container, realize thermometric, pressure measurement, the temperature, pressure data of gained are sent to industrial computer 16, can calculate the mass rate by sonic nozzle 10, that is the mass rate by meter-clamping apparatus group 15 places.The temperature and pressure of meter-clamping apparatus group 15 upstream ends of measuring by temperature sensor 13 and pressure transducer 14, the temperature, pressure data of gained are sent to industrial computer 16, can calculate atmospheric density, and then obtain the standard volume flow.To calculate the gained normal flow and the flowmeter flow number of degrees to be checked compare in industrial computer 16, thereby finish calibrating gas meter to be checked.
Claims (4)
1. positive platen press sonic nozzle gas meter calibrating installation, it comprises source of the gas, sonic nozzle standard scale, calibration operation platform, it is characterized in that: as the calibrating medium, contact successively by pipeline and connect high pressure positive blower (2), ratio adjusting valve (4) and buffering container (5) by the air intake opening of source of the gas (1) with atmosphere for described source of the gas part.
2. positive platen press sonic nozzle gas meter calibrating installation according to claim 1 is characterized in that: described high pressure positive blower (2) adopts the high pressure positive blower of frequency control, and ratio adjusting valve (4) adopts electronic ratio adjusting valve; Air intake opening (1) in the described source of the gas part connects high pressure positive blower (2), and ratio adjusting valve (4) links to each other with buffer container (5) by gas piping (3); Frequency control high pressure positive blower (2), electronic ratio adjusting valve (4) link to each other by the data acquisition mouth of signal wire with industrial computer (16) respectively.
3. positive platen press sonic nozzle gas meter calibrating installation according to claim 1, it is characterized in that: the valve sets (11) in the described sonic nozzle standard scale links to each other respectively with sonic nozzle group (10) on being installed on stagnation container (7), and links to each other with buffer container (5) by pipeline (6); The other end of valve sets (11) links to each other with header (12); Temperature sensor (8) and pressure transducer (9) are installed on stagnation container (7).
4. positive platen press sonic nozzle gas meter calibrating installation according to claim 1, it is characterized in that: the header (12) in the described calibration operation platform is equipped with meter-clamping apparatus group (15) by pipeline group; Temperature sensor (13) and pressure transducer (14) are installed on pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079012 CN2814357Y (en) | 2005-07-04 | 2005-07-04 | Sound speed nozzle gas flowmeter detector by barotropic process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079012 CN2814357Y (en) | 2005-07-04 | 2005-07-04 | Sound speed nozzle gas flowmeter detector by barotropic process |
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| Publication Number | Publication Date |
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| CN2814357Y true CN2814357Y (en) | 2006-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200520079012 Expired - Fee Related CN2814357Y (en) | 2005-07-04 | 2005-07-04 | Sound speed nozzle gas flowmeter detector by barotropic process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644627B (en) * | 2009-09-11 | 2011-05-04 | 北京航空航天大学 | Automatic calibration system and automatic calibration method for sonic nozzle |
| CN104677439A (en) * | 2013-11-29 | 2015-06-03 | 清华大学 | Hydrogen gas flow rate detecting system and hydrogen gas flow rate detecting system |
| CN106404125A (en) * | 2016-08-31 | 2017-02-15 | 新奥科技发展有限公司 | Detection device for gas flow meter |
| CN108709696A (en) * | 2018-06-20 | 2018-10-26 | 河南省计量科学研究院 | A kind of building external doors and windows testing machine calibrating installation |
| CN109211372A (en) * | 2018-11-12 | 2019-01-15 | 中国计量科学研究院 | Low pressure critical flow venturi nozzle calibrating installation |
| CN110686758A (en) * | 2019-09-26 | 2020-01-14 | 西安航天计量测试研究所 | Sound velocity nozzle gas flow standard device capable of switching pressure sources and control method thereof |
-
2005
- 2005-07-04 CN CN 200520079012 patent/CN2814357Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644627B (en) * | 2009-09-11 | 2011-05-04 | 北京航空航天大学 | Automatic calibration system and automatic calibration method for sonic nozzle |
| CN104677439A (en) * | 2013-11-29 | 2015-06-03 | 清华大学 | Hydrogen gas flow rate detecting system and hydrogen gas flow rate detecting system |
| CN106404125A (en) * | 2016-08-31 | 2017-02-15 | 新奥科技发展有限公司 | Detection device for gas flow meter |
| CN108709696A (en) * | 2018-06-20 | 2018-10-26 | 河南省计量科学研究院 | A kind of building external doors and windows testing machine calibrating installation |
| CN108709696B (en) * | 2018-06-20 | 2024-04-05 | 河南省计量测试科学研究院 | Calibrating device for building exterior door and window testing machine |
| CN109211372A (en) * | 2018-11-12 | 2019-01-15 | 中国计量科学研究院 | Low pressure critical flow venturi nozzle calibrating installation |
| CN109211372B (en) * | 2018-11-12 | 2024-05-14 | 中国计量科学研究院 | Low-pressure critical flow venturi nozzle calibrating device |
| CN110686758A (en) * | 2019-09-26 | 2020-01-14 | 西安航天计量测试研究所 | Sound velocity nozzle gas flow standard device capable of switching pressure sources and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060906 Termination date: 20140704 |
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| EXPY | Termination of patent right or utility model |