CN1291716A - Compressed natural gas filling metering method and filling metering device thereof - Google Patents
Compressed natural gas filling metering method and filling metering device thereof Download PDFInfo
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- CN1291716A CN1291716A CN 00120538 CN00120538A CN1291716A CN 1291716 A CN1291716 A CN 1291716A CN 00120538 CN00120538 CN 00120538 CN 00120538 A CN00120538 A CN 00120538A CN 1291716 A CN1291716 A CN 1291716A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000003345 natural gas Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000007789 gas Substances 0.000 claims description 67
- 239000011435 rock Substances 0.000 claims description 36
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
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Abstract
A metering method and a metering device for filling compressed natural gas adopt a static pVT method for metering. Introducing compressed natural gas into a standard working container with a known volume, filling the filled container, and calculating and displaying the external natural gas metering value according to the changes of the natural gas pressure and the temperature in the standard working container before and after filling. The device has the characteristics of reliable measurement, high accuracy, convenient use and maintenance, low maintenance cost and the like.
Description
The present invention relates to a kind of compressed natural gas and fill metering method and fill measuring apparatus, be used to compress the natural metering that fills.Compressed natural gas involved in the present invention is meant that pressure after compression can reach the high-pressure natural gas of 20～25 MPas.
Be used for filling metering method and fill measuring apparatus and mainly containing two kinds of compressed natural gas at present: a kind ofly be based on the U-shaped or the T shape pipe mass rate method of coriolis force principle and fill measuring apparatus (market claims gas selling machine); Another kind is based on the throttling differential pressure type Venturi tube inflation measuring apparatus of indirect fluid-velocity survey principle.The former must be converted to the cube volume under the standard state by China's legal unit of measurement when reality is used, be commonly called as " mark side "; The latter requires the indexs such as the pressure, temperature of source of the gas must be very stable.And above-mentioned two kinds of methods must be done " it is fixed to fail to be sold at auction in fact " when measurement verification, this brings very big inconvenience just for metrological supervision, the especially supervision of trade settlement link.
The purpose of this invention is to provide a kind of easy to usely, have the compressed natural gas of higher measuring accuracy to fill metering method and fill measuring apparatus.
The object of the present invention is achieved like this: according to the present situation that present compressed natural gas fills, adopt static pVT method to measure.Its related method is: at first compressed natural gas is introduced in the standard operation container of known volume, recorded the pressure and the temperature that charge into rock gas, obtain the volume number of compressed natural gas under standard conditions in the standard operation container.Utilize the interior gas pressure of standard operation container to be higher than and filled container pressure, fill container to quilt and fill compressed natural gas.Before finishing after the inflation again pressure and temperature according to residue rock gas in the standard operation container and calculating the standard operation container and outwards fill with fill after the natural-gas product moment, be the outer gas metering value of filling.
The fill measuring apparatus related by the inventive method is: known volume is set and meets the standard operation container of relevant pressure vessel relevant regulations, in the standard operation container, be provided with pressure transducer and temperature sensor, the standard operation container is provided with rock gas inlet channel and rock gas outlet passageway, on rock gas inlet channel and rock gas outlet passageway, be respectively arranged with the air inlet motorized valve and the motorized valve of giving vent to anger, by the air inlet motorized valve standard operation container is communicated with the station gas storage, by the motorized valve of giving vent to anger the standard operation container is filled container with quilt and be communicated with; The control line of the output line of pressure transducer and temperature sensor and air inlet motorized valve and the motorized valve of giving vent to anger is in relation to industrial computer by common interface circuit respectively, and industrial computer is provided with data display equipment.
In order to improve work efficiency of the present invention, by same inventive concept design, two standard operation containers are set, in the standard operation container, be provided with pressure transducer and temperature sensor; The standard operation container respectively is in relation to air inlet motorized valve and manual threeway air outlet valve by an electric three-way valve; The air inlet motorized valve is in relation to the station gas storage by the rock gas inlet channel, and two passages of all the other of manual threeway air outlet valve are in relation to respectively and are filled container and loading line dump circuit.The control line of the output line of pressure transducer and temperature sensor and air inlet motorized valve and electric three-way valve is in relation to industrial computer by common interface circuit respectively, and industrial computer is provided with data display equipment.
The course of work of the present invention is: before being filled the container inflation, industrial computer control air inlet motorized valve is opened station gas storage and standard operation container inlet channel, introduces compressed natural gas to the standard operation container.After reaching set pressure, close the air inlet motorized valve.Industrial computer records pressure and the temperature of introducing compressed natural gas by pressure transducer and the temperature sensor that is installed in the standard operation container.The special algorithm that provides according to the report of No. 8, the American Gas Association conveying and metering council is obtained the rock gas Real Time Compression factor then, and the algorithm (pVT method) that provides by No. 3 reports of the American Gas Association conveying and metering council is obtained compressed natural gas in the standard operation container and is converted to volume number (petroleum industry publishing house " American Petroleum Institute's natural gas flow orifice body measurement standard compilation ") under the standard conditions again; When being filled the container inflation, industrial computer is opened the standard operation container and is filled the motorized valve of giving vent to anger between the container, filled to filling container, simultaneously pressure before and after the motorized valve of giving vent to anger is monitored, after finishing, inflation closes the motorized valve of giving vent to anger, the pressure and temperature of compressed natural gas in the metric works container once more, and calculate the volume of residue rock gas under standard conditions in the standard operation container.Be with afterwards volume differences before rock gas outwards fills in the standard operation container and fill variable.
The present invention as measuring apparatus its measurement verification need only demarcate the standard operation container, detected pressures and temperature sensor accuracy can be carried out accuracy of measuring evaluation, needn't carry out " it is fixed to fail to be sold at auction in fact ", be convenient to metrological supervision, make things convenient for the metrological supervision of trade settlement link especially.
Below by embodiment, the present invention is further described in conjunction with the accompanying drawings.
Fig. 1 is an embodiment of the present invention principle schematic;
Fig. 2 is an another kind of example structure synoptic diagram of the present invention.
Among the figure, 1 for the standard operation container, and 2 are the air inlet motorized valve, 3 for the motorized valve 4 of giving vent to anger be the rock gas inlet channel, 5 is the rock gas outlet passageway, and 6 is the station gas storage, and 7 for being filled container, and 8 is temperature sensor, 9 is pressure transducer, and 10 is industrial computer, and 11 is data display equipment.Standard operation container 1 is the pressure vessel of known volume.As station standard gas cylinder, withstand voltage is higher than 25 MPas.Be provided with pressure transducer 9 and temperature sensor 8 in standard operation container 1, pressure transducer 9 can be the normal pressure transmitter of 0～28 MPa, and temperature sensor 8 can be-30～+ 80 degrees centigrade a standard temperature transmitter.Standard operation container 1 is provided with rock gas inlet channel 4 and rock gas outlet passageway 5, on rock gas inlet channel 4 and rock gas outlet passageway 5, be respectively arranged with the air inlet motorized valve 2 and the motorized valve 3 of giving vent to anger, by air inlet motorized valve 2 standard operation container 1 is communicated with station gas storage 6, by the motorized valve 3 of giving vent to anger standard operation container 1 is filled container 7 with quilt and be communicated with; The control line of the output line of pressure transducer 9 and temperature sensor 8 and air inlet motorized valve 2 and the motorized valve 3 of giving vent to anger is in relation to industrial computer 10 by common interface circuit respectively, and industrial computer 10 is provided with display 11.Wherein, industrial computer 10 can be the 80486DX computing machine, and data display equipment 11 is a standard indicator; Common interface circuit between the output line of pressure transducer 9 and temperature sensor 8 and the industrial computer 10 can be the PCL816A/D change-over panel, and the control line and the common interface circuit between the industrial computer 10 of the air inlet motorized valve 2 and the motorized valve 3 of giving vent to anger can be the PCL-730I/O plates.The course of work of embodiment is: before being filled container 7 inflations, industrial computer 10 control air inlet motorized valves 2 are opened station gas storage 6 and standard operation container 1 inlet channel 4, introduce compressed natural gas to standard operation container 1.After reaching set pressure, close air inlet motorized valve 2.Industrial computer 10 records pressure and the temperature of introducing compressed natural gas by pressure transducer 9 and the temperature sensor 8 that is installed in the standard operation container 1.The special algorithm that provides according to the report of No. 8, the American Gas Association conveying and metering council is obtained the rock gas Real Time Compression factor then, and the algorithm (pVT method) that provides by No. 3 reports of the American Gas Association conveying and metering council is obtained compressed natural gas in the standard operation container 1 and is converted to volume number under the standard conditions again; When being filled container 7 inflations, industrial computer 10 is opened standard operation containers 1 and is filled the motorized valve 3 of giving vent to anger between the container 7, filled to filling container 7, simultaneously the motorized valve 3 front and back pressure of giving vent to anger are monitored, after finishing, inflation closes the motorized valve 3 of giving vent to anger, the pressure and temperature of compressed natural gas in the metric works container 1 once more, and calculate the volume of residue rock gas under standard conditions in the standard operation container 1.Be with afterwards volume differences before rock gas outwards fills in the standard operation container 1 and fill variable, continuous data all can show on data display equipment 11.
Another kind of embodiment shown in Figure 2 is in order to improve work efficiency of the present invention in actual use, by same inventive concept design, two standard operation containers 1 are set, and standard operation container 1 respectively is in relation to air inlet motorized valve 2 and manual threeway air outlet valve 12 by an electric three-way valve 14.All the other two passages of manual threeway air outlet valve 12 are in relation to respectively and are filled container 7 and loading line dump circuit 13.The course of work of present embodiment is: before being filled container 7 inflations, industrial computer 10 records pressure and the temperature of introducing compressed natural gas by pressure transducer 9 and the temperature sensor 8 that is installed in the standard operation container 1.The special algorithm that provides according to the report of No. 8, the American Gas Association conveying and metering council is obtained the rock gas Real Time Compression factor then, and the algorithm (pVT method) that provides by No. 3 reports of the American Gas Association conveying and metering council is obtained compressed natural gas in the standard operation container 1 and is converted to volume number under the standard conditions again.When being filled container 7 inflation, with manual threeway air outlet valve 12 with filled container 7 and be connected, open manual threeway air outlet valve 12 and make and filled container and be communicated with electric three-way valve 14.Industrial computer 10 when being filled the container inflation, makes station gas storage 6 inflate to another standard operation container 1 by one of them standard operation container 1 of electric three-way valve 14 control, reach set pressure after, close air inlet motorized valve 2.Industrial computer 10 records pressure and the temperature of introducing compressed natural gas by pressure transducer 9 and the temperature sensor 8 that is installed in the standard operation container 1.The special algorithm that provides according to the report of No. 8, the American Gas Association conveying and metering council is obtained the rock gas Real Time Compression factor then, and the algorithm (pVT method) that provides by No. 3 reports of the American Gas Association conveying and metering council is obtained compressed natural gas in the standard operation container 1 and is converted to volume number under the standard conditions again.In gas replenishment process, can control two standard operation containers 1 alternately to being filled container 7 inflations by industrial computer 10.When filled container 7 fill finish after, close and filled container 7 air intake openings, close by manual threeway air outlet valve 12 and filled the passage between container 7 and the electric three-way valve 14 and make the loading line emptying.Industrial computer 10 is the pressure and temperature of metric works container 1 interior residual compression rock gas once more, and calculates the volume of residue rock gas under standard conditions in the standard operation container 1.Be with afterwards volume differences before rock gas outwards fills in the standard operation container 1 and fill variable, continuous data all can show on data display equipment 11.
The present invention needn't carry out " fail to be sold at auction in fact fixed " except having, be convenient to metrological supervision, makes things convenient for especially outside the metrological supervision of trade settlement link, also have the present invention and measure reliably, the accuracy height, use easy to maintenance, characteristics such as maintenance cost is low.
Claims (4)
1, a kind of compressed natural gas fills metering method, it is characterized in that at first compressed natural gas being introduced in the standard operation container of known volume, record the pressure and the temperature that charge into rock gas, obtain the volume number of compressed natural gas under standard conditions in the standard operation container; Utilize the interior gas pressure of standard operation container to be higher than and filled container pressure, fill container to quilt and fill compressed natural gas; Before finishing after the inflation again pressure and temperature according to residue rock gas in the standard operation container and calculating the standard operation container and outwards fill with fill after the natural-gas product moment, be the outer gas metering value of filling.
2, a kind of compressed natural gas fills measuring apparatus, it is characterized in that known volume is set and meet the standard operation container of relevant pressure vessel relevant regulations, in the standard operation container, be provided with pressure transducer and temperature sensor, the standard operation container is provided with rock gas inlet channel and rock gas outlet passageway, on rock gas inlet channel and rock gas outlet passageway, be respectively arranged with the air inlet motorized valve and the motorized valve of giving vent to anger, by the air inlet motorized valve standard operation container is communicated with the station gas storage, by the motorized valve of giving vent to anger the standard operation container is filled container with quilt and be communicated with; The control line of the output line of pressure transducer and temperature sensor and air inlet motorized valve and the motorized valve of giving vent to anger is in relation to industrial computer by common interface circuit respectively, and industrial computer is provided with data display equipment.
3, compressed natural gas as claimed in claim 2 fills measuring apparatus, it is characterized in that being provided with two standard operation containers, is provided with pressure transducer and temperature sensor in the standard operation container; The standard operation container respectively is in relation to air inlet motorized valve and manual threeway air outlet valve by an electric three-way valve; The air inlet motorized valve is in relation to the station gas storage by the rock gas inlet channel, and two passages of all the other of manual threeway air outlet valve are in relation to respectively and are filled container and loading line dump circuit.The control line of the output line of pressure transducer and temperature sensor and air inlet motorized valve and electric three-way valve is in relation to industrial computer by common interface circuit respectively, and industrial computer is provided with data display equipment.
4, compressed natural gas as claimed in claim 1 fills metering method, it is characterized in that at first compressed natural gas being introduced in the standard operation container of known volume, record the pressure and the temperature that charge into rock gas, obtain the rock gas Real Time Compression factor according to the special algorithm that the report of No. 8, the American Gas Association conveying and metering council provides, the algorithm that provides by No. 3 reports of the American Gas Association conveying and metering council is obtained compressed natural gas in the standard operation container and is converted to volume under the standard conditions again; Utilize the interior gas pressure of standard operation container to be higher than and filled container pressure, fill container to quilt and fill compressed natural gas; Finish after the inflation again pressure and temperature according to residue rock gas in the standard operation container, obtain the rock gas Real Time Compression factor according to the special algorithm that No. 8 reports of the American Gas Association conveying and metering council provide, the algorithm that provides by the report of No. 3, the American Gas Association conveying and metering council is obtained residual compression rock gas in the standard operation container and is converted to volume under the standard conditions again, and before calculating the standard operation container and outwards filling with fill after the natural-gas product moment, be the outer gas metering value of filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001205382A CN1155810C (en) | 2000-10-31 | 2000-10-31 | Compressed natural gas filling metering method and filling metering device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001205382A CN1155810C (en) | 2000-10-31 | 2000-10-31 | Compressed natural gas filling metering method and filling metering device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1291716A true CN1291716A (en) | 2001-04-18 |
| CN1155810C CN1155810C (en) | 2004-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB001205382A Expired - Fee Related CN1155810C (en) | 2000-10-31 | 2000-10-31 | Compressed natural gas filling metering method and filling metering device thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256480A (en) * | 2013-05-16 | 2013-08-21 | 重庆大学 | Bus gas storage quantity real-time monitoring system based on onboard data |
| CN104133039A (en) * | 2014-07-14 | 2014-11-05 | 北京卫星环境工程研究所 | Satellite electric-propulsion working medium xenon filling characteristic test method |
| CN104315332A (en) * | 2014-10-09 | 2015-01-28 | 江苏大学 | Precise metering device for filling liquefied natural gas |
| CN105757448A (en) * | 2016-04-07 | 2016-07-13 | 核工业理化工程研究院 | Accurate gas sub-packaging device |
| CN108136451A (en) * | 2015-10-14 | 2018-06-08 | 富路得设备有限公司 | Clear up the method and system of pipe-line system |
| CN110319901A (en) * | 2019-07-02 | 2019-10-11 | 东莞市美迪格电子科技有限公司 | A kind of devices and methods therefor measuring nebulizer gas volume |
| CN110869719A (en) * | 2017-07-14 | 2020-03-06 | Gce控股股份公司 | Electronic measuring meter |
-
2000
- 2000-10-31 CN CNB001205382A patent/CN1155810C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256480A (en) * | 2013-05-16 | 2013-08-21 | 重庆大学 | Bus gas storage quantity real-time monitoring system based on onboard data |
| CN103256480B (en) * | 2013-05-16 | 2015-10-21 | 重庆大学 | Based on the bus gas-storing capacity real-time monitoring system of vehicle-mounted data |
| CN104133039A (en) * | 2014-07-14 | 2014-11-05 | 北京卫星环境工程研究所 | Satellite electric-propulsion working medium xenon filling characteristic test method |
| CN104315332A (en) * | 2014-10-09 | 2015-01-28 | 江苏大学 | Precise metering device for filling liquefied natural gas |
| CN104315332B (en) * | 2014-10-09 | 2016-09-14 | 江苏大学 | A kind of liquified natural gas aerating accurate measuring device |
| CN108136451A (en) * | 2015-10-14 | 2018-06-08 | 富路得设备有限公司 | Clear up the method and system of pipe-line system |
| CN108136451B (en) * | 2015-10-14 | 2021-08-20 | 富路得设备有限公司 | Method and system for cleaning pipeline system |
| CN105757448A (en) * | 2016-04-07 | 2016-07-13 | 核工业理化工程研究院 | Accurate gas sub-packaging device |
| CN105757448B (en) * | 2016-04-07 | 2018-11-16 | 核工业理化工程研究院 | The accurate subpackage apparatus of gas |
| CN110869719A (en) * | 2017-07-14 | 2020-03-06 | Gce控股股份公司 | Electronic measuring meter |
| CN110319901A (en) * | 2019-07-02 | 2019-10-11 | 东莞市美迪格电子科技有限公司 | A kind of devices and methods therefor measuring nebulizer gas volume |
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| Publication number | Publication date |
|---|---|
| CN1155810C (en) | 2004-06-30 |
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Granted publication date: 20040630 Termination date: 20091130 |