CN103557899B - A kind of gas metering method and device based on energy meter - Google Patents
A kind of gas metering method and device based on energy meter Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 164
- 239000007789 gas Substances 0.000 claims abstract description 109
- 239000003345 natural gas Substances 0.000 claims abstract description 85
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000004817 gas chromatography Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000002737 fuel gas Substances 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
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Abstract
The invention discloses a kind of gas metering method based on energy meter, measure the component of natural gas first with gas chromatographicanalyzer, and determine the mass calorific value of natural gas according to gas component；Then the mass flow of natural gas is measured；The energy of natural gas is determined finally according to mass calorific value and mass flow, complete energy meter.Present invention also offers the combustible gas metering arrangement based on energy meter realizing the inventive method.The inventive method utilizes gas chromatographicanalyzer to measure the component of natural gas, and the mass calorific value of natural gas is obtained according to gas component, the energy of natural gas is gone out in conjunction with quality of natural gas flow measuring, realize energy meter, it it is a kind of new metering method, and this metering method is more reasonable, more accurately.
Description
Technical Field
The invention relates to the technical field of gas metering, in particular to a gas metering method based on energy metering and a gas metering device based on energy metering.
Background
Natural gas is a clean, efficient energy source, and therefore more and more urban residents use natural gas. The gas meter is a device for metering the gas usage of a user. At present, natural gas metering devices and household gas meters (skin model meters) are volume flow under the condition of a metering working condition (the condition of actual working), however, due to compressibility of natural gas, volume metering under different temperature and pressure conditions is different, so that gas metering is inaccurate. At present, the flow meter and the volume corrector are matched for use by industrial and commercial users, and the volume of the natural gas is converted into a standard state (the standard atmospheric pressure in China, 101.325KPa and 20 ℃), so that the problem of inaccurate measurement caused by variable volume flow is solved, and the trade settlement is convenient for relevant parties.
The purpose of using the gas by the user is to obtain heat energy, and it is more reasonable if the gas using fee is paid according to the used heat energy. However, at present, gas companies charge for the volume, and the composition of natural gas is complex, the composition of natural gas from different sources at different times is different, the content of each component is also greatly different, and the calorific value of each component is different, so that the calorific value of natural gas is different due to the difference of components even in the same volume of natural gas under standard conditions. Metering according to the gas volume is therefore also not accurate enough.
Disclosure of Invention
The invention aims to overcome the defect of inaccurate measurement in the prior art of gas measurement according to volume, provides a gas measurement method based on energy measurement, and simultaneously provides a gas measurement device based on energy measurement.
In order to achieve the above purpose, the invention provides the following technical scheme:
a fuel gas metering method based on energy metering comprises the following steps:
step 10: the gas metering device receives natural gas component data measured by the gas chromatographic analyzer;
step 20: the microprocessor of the gas metering device measures and calculates the mass heat productivity of the natural gas according to the components of the natural gas Wherein M isjIs the molar mass of component j in the natural gas,for natural gas as ideal gas, at combustion reference temperature t1Pressure P1Molar calorific value of the lower component j, xjThe component j is the mole fraction of the component j in the natural gas and is measured by a gas chromatography analyzer, and N is the component quantity of the natural gas;
step 30: mass flow V of natural gas measured by mass flow counting unit of gas metering devicem；
Step 40: the microprocessor of the gas metering device generates heat and mass flow V according to the mass of the natural gasmDetermining the energy E of the natural gas,and finishing energy metering.
The invention also provides a gas metering device based on energy metering for realizing the method, which comprises a power supply unit for providing electric energy and a microprocessor, wherein the microprocessor receives the natural gas component data transmitted by the gas chromatographic analyzer in a wired or wireless mode and is also connected with a mass flow counting unit for metering the mass flow of the natural gas; the microprocessor obtains the mass heating value of the natural gas according to the natural gas component data, and then determines the energy of the natural gas according to the mass heating value and the mass flow of the natural gas.
According to the embodiment of the invention, the gas chromatographic analyzer is arranged in the gas metering device based on energy metering and passes through I2The C bus or 485 bus or serial port or network interface is connected with the microprocessor.
Preferably, the gas metering device based on energy metering further comprises a data remote transmission unit connected with the microprocessor. The gas chromatographic analyzer is arranged at the main gas transmission inlet of the gas pipeline and is connected with the data remote transmission unit through a wired or wireless network.
Preferably, the intelligent gas metering device based on energy metering further comprises a pressure sensor and an audible and visual alarm unit which are connected with the microprocessor. The intelligent gas metering device based on energy metering also comprises a GSM/GPRS unit connected with the microprocessor. The gas metering device based on energy metering also comprises a vibration sensor connected with the microprocessor.
Compared with the prior art, the invention has the beneficial effects that:
according to the fuel gas metering method based on energy metering, firstly, the components of natural gas are measured, the mass calorific value of the natural gas is measured and calculated according to the components of the natural gas, and then the energy of the natural gas is obtained according to the mass flow obtained through metering, so that the fuel gas metering method based on energy metering is a brand new fuel gas metering mode, and the fuel gas metering mode is more reasonable.
According to the gas metering device based on energy metering, after the gas chromatographic analyzer transmits the components of the natural gas to the microprocessor, the microprocessor obtains the mass heating value of the natural gas according to the components of the natural gas, the mass flow counting unit meters the mass flow of the natural gas, and the microprocessor can obtain the energy of the natural gas according to the mass heating value and the mass flow of the natural gas, so that energy metering is realized.
Description of the drawings:
FIG. 1 is a flow chart of a gas metering method based on energy metering in an embodiment.
Fig. 2 is a block diagram of a structure of a gas metering device based on energy metering in an implementation embodiment.
FIG. 3 is a block diagram of another structure of the gas metering device based on energy metering in the embodiment.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Referring to fig. 1, the invention provides a gas metering method based on energy metering, comprising the following steps:
step 10: the gas chromatographic analyzer is used for measuring the components of the natural gas, and the gas metering device receives the natural gas component data measured by the gas chromatographic analyzer. This step can be carried out in two ways, one of which is a gas metering device equipped with a MEMS-based gas chromatograph which passes through I2The C bus or 485 bus or serial port is connected with the microprocessor of the gas metering device, and the natural gas component collected by the gas chromatographic analyzer passes through the I2And the C bus or the 485 bus or the serial port is transmitted to a microprocessor of the gas metering device.
In another embodiment, since the natural gas supplied to each user by the same gas company has the same composition, the composition of the natural gas can be measured by a gas chromatograph at the main input port of the gas pipeline of the gas company (a residential area), and then transmitted to the gas metering device of each user through a wireless or wired network (by means of the meter reading network of the existing intelligent gas metering device).
Step 20: the gas metering device measures and calculates the mass calorific capacity of the natural gas according to the natural gas component data Wherein M isjIs the molar mass of component j in the natural gas,for natural gas as ideal gas, at combustion reference temperature t1Pressure P1Molar calorific value of the lower component j, international t1Can be at 25 deg.C, 20 deg.C, 15 deg.C or 0 deg.C, and is common1At 20 ℃ P1Is at a standard atmospheric pressure. The molar heating value of a standard atmospheric component j at a combustion reference temperature of 20 ℃ can be obtained by looking up a table from published data. x is the number ofjThe component j is the mole fraction of the component j in the natural gas and is measured by a gas chromatography analyzer, and N is the component amount of the natural gas.
Step 30: mass flow V of natural gas measured by mass flow counting unit of gas metering devicem；
Step 40: the microprocessor of the gas metering device generates heat and mass flow V according to the mass of the natural gasmDetermining the energy E of the natural gas,and finishing energy metering.
Referring to fig. 2 and 3, the invention further provides a gas metering device based on energy metering, which comprises a power supply unit for supplying electric energy and a microprocessor, wherein the microprocessor is connected with a mass flow counting unit, and the mass flow counting unit is used for metering the mass flow of natural gas. The microprocessor also receives the natural gas component data transmitted by the gas chromatograph in a wireless or wired mode. Referring to FIG. 3, the gas chromatograph employs a MEMS (micro electro mechanical System) -based gas chromatograph with a small volume, and the gas chromatograph passes through I2The C bus or 485 bus or serial port or network interface is connected with the microprocessor. Referring to fig. 3, a data remote transmission unit is arranged in the gas metering device and connected with the microprocessor, and the gas chromatography analyzer can transmit the natural gas component data to the microprocessor through the data transmission unit. Receive the natural gas composition data of gas chromatography appearance transmission through this kind of mode, adopt a gas chromatography appearance in gas pipeline total input port department can, avoided setting up gas chromatography appearance on every gas metering device and measuring every user's natural gas composition, saved the use quantity of gas chromatography appearance equipment, still save the cost under the realization is based on the condition of energy measurement. Of course, the gas metering device also comprises a power supply unit, an operating button and a display screen, wherein the power supply unit provides electric energy for the whole gas metering device, the operating button is used for inputting data when data are required to be manually input, the display screen is used for displaying a metering result, and the operating button can be embedded into the display screen to form a touch screen.
The microprocessor receives the natural gas component data transmitted by the gas chromatographic analyzer, obtains the mass heat productivity of the natural gas according to the components of the natural gas, the energy of the natural gas is determined by combining the mass flow, the implementation is based on metering.
The data remote transmission unit is realized in a wired or wireless mode, the wired mode is used for carrying out remote transmission through an M-bus, and the wireless mode is used for realizing wireless network transmission through a wireless network card. The data remote transmission unit can receive the natural gas component data transmitted by the gas chromatographic analyzer, and can also be used for directly transmitting the natural gas usage amount (based on energy calculation) of the gas metering device to a monitoring terminal of a gas company, so that a meter reader is prevented from going to a home site of each user to read the meter, and the workload of the meter reader is reduced. And aiming at the prepayment user, the gas company can also send user balance information to the gas metering device through the data remote transmission unit and display the user balance information through the display screen so as to remind the user to pay for and recharge in time.
Referring to fig. 3, as a further preferred embodiment, the gas metering device based on energy metering of the present invention further comprises a pressure sensor, an audible and visual alarm unit, a vibration sensor and a GSM/GPRS unit, wherein the pressure sensor, the audible and visual alarm unit, the vibration sensor and the GSM/GPRS unit are all connected with the microprocessor. The pressure sensor is used for detecting the pressure of natural gas in real time, so that the change of the gas pressure can be obtained, whether gas leakage exists or not is judged (the gas pressure is overlarge or the gas pressure change is detected in a time period without using the gas, the gas leakage can be judged), if the gas leakage is detected, an alarm signal is sent out through the sound-light alarm unit, meanwhile, the microprocessor sends a short message to a mobile phone terminal of a user through the GSM/GPRS unit, and the user is informed of the gas leakage in time. The vibration sensor is used for detecting the shaking intensity of the gas metering device, and when the shaking intensity reaches a set value, the microprocessor controls the valve to be closed, so that the gas using safety threatened by strong vibration during earthquake is avoided.
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Claims (8)
1. A fuel gas metering method based on energy metering is characterized by comprising the following steps:
step 10: the gas metering device receives natural gas component data measured by the gas chromatographic analyzer;
step 20: the microprocessor of the gas metering device measures and calculates the mass heat productivity of the natural gas according to the components of the natural gas
Wherein,Mjis the molar mass of component j in the natural gas,for natural gas as ideal gas, at combustion reference temperature t1Pressure P1Molar calorific value of the lower component j, xjThe component j is the mole fraction of the component j in the natural gas and is measured by a gas chromatography analyzer, and N is the component quantity of the natural gas;
step 30: mass flow V of natural gas measured by mass flow counting unit of gas metering devicem；
Step 40: the microprocessor of the gas metering device generates heat and mass flow V according to the mass of the natural gasmDetermining the energy E of the natural gas,and finishing energy metering.
2. The method of claim 1, wherein the combustion reference condition temperature t in step 20 is1At a temperature of 20 ℃ and a pressure P1Is at a standard atmospheric pressure.
3. A gas metering device based on energy metering for realizing the method of claim 1, which comprises a power supply unit for supplying electric energy, and is characterized by further comprising a microprocessor, wherein the microprocessor receives natural gas component data transmitted by a gas chromatography analyzer in a wired or wireless mode, and is also connected with a mass flow counting unit for metering the mass flow of natural gas; the microprocessor obtains the mass heating value of the natural gas according to the natural gas component data, and then determines the energy of the natural gas according to the mass heating value and the mass flow of the natural gas;
the gas chromatographic analyzer is arranged in the gas metering device based on energy metering and passes through I2The C bus or 485 bus or the serial port or the network interface is connected with the microprocessor(ii) a Or,
the gas chromatographic analyzer is arranged at the main input port of a pipeline of a gas company and is connected with the microprocessor through a wired or wireless network.
4. The gas metering device based on energy metering of claim 3, further comprising a data remote transmission unit connected with the microprocessor.
5. The gas metering device based on energy metering of claim 4, wherein the gas chromatographic analyzer is arranged at the general input port of the gas pipeline, and the gas chromatographic analyzer is connected with the data remote transmission unit through a wired or wireless network.
6. The gas metering device based on energy metering according to claim 3, characterized in that the gas metering device based on energy metering further comprises a pressure sensor and an audible and visual alarm unit which are connected with the microprocessor.
7. The energy metering-based gas metering device according to claim 3, further comprising a GSM/GPRS unit connected to the microprocessor.
8. The energy metering-based gas metering device of claim 3, further comprising a vibration sensor connected to the microprocessor.
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| CN201310521622.4A CN103557899B (en) | 2013-10-29 | 2013-10-29 | A kind of gas metering method and device based on energy meter |
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| CN201310521622.4A CN103557899B (en) | 2013-10-29 | 2013-10-29 | A kind of gas metering method and device based on energy meter |
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| CN103557899B true CN103557899B (en) | 2016-08-10 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104977394B (en) * | 2015-07-16 | 2018-10-12 | 莱芜市安诺美姿自动化仪表有限公司 | A kind of Gas Components and calorific value on-line measurement device |
| CN109579927A (en) * | 2018-11-23 | 2019-04-05 | 罗美特（上海）自动化仪表股份有限公司 | A kind of calorific value flowmeter |
| CN110068375A (en) * | 2019-05-27 | 2019-07-30 | 金卡智能集团股份有限公司 | A kind of gas metering method based on energy meter |
| CN112611826A (en) * | 2020-12-31 | 2021-04-06 | 武汉泰特沃斯科技有限公司 | Online gas chromatography remote monitoring method based on Internet of things technology |
| CN113379968A (en) * | 2021-06-08 | 2021-09-10 | 温州大学 | Gas pricing method based on spectrum-mass-spectrum combination and internet-of-things technology |
| CN113570475B (en) * | 2021-07-26 | 2023-10-27 | 成都秦川物联网科技股份有限公司 | Intelligent pipe network energy metering data cross-network sharing method and system |
| US11979697B2 (en) | 2021-07-26 | 2024-05-07 | Chengdu Qinchuan Iot Technology Co., Ltd. | Methods and internet of things systems for obtaining natural gas energy metering component |
| CN115790908B (en) * | 2023-02-08 | 2023-06-23 | 成都千嘉科技股份有限公司 | Natural gas metering method and device based on heat metering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1184931A (en) * | 1996-12-11 | 1998-06-17 | 唐秀家 | Method and apparatus for detecting and positioning leakage of fluid transferring pipeline |
| CN1401071A (en) * | 2000-02-16 | 2003-03-05 | 微动公司 | Device for measuring mass flow and energy content |
| CN101255947A (en) * | 2008-04-07 | 2008-09-03 | 成都康斯博科技有限责任公司 | Metered system for automatically capturing fluid flux |
| CN202600940U (en) * | 2012-03-27 | 2012-12-12 | 无锡市云感科技股份有限公司 | Wireless meter reading system |
| CN103335682A (en) * | 2013-07-15 | 2013-10-02 | 成都千嘉科技有限公司 | Measuring method for gas flow of natural gas |
-
2013
- 2013-10-29 CN CN201310521622.4A patent/CN103557899B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1184931A (en) * | 1996-12-11 | 1998-06-17 | 唐秀家 | Method and apparatus for detecting and positioning leakage of fluid transferring pipeline |
| CN1401071A (en) * | 2000-02-16 | 2003-03-05 | 微动公司 | Device for measuring mass flow and energy content |
| CN101255947A (en) * | 2008-04-07 | 2008-09-03 | 成都康斯博科技有限责任公司 | Metered system for automatically capturing fluid flux |
| CN202600940U (en) * | 2012-03-27 | 2012-12-12 | 无锡市云感科技股份有限公司 | Wireless meter reading system |
| CN103335682A (en) * | 2013-07-15 | 2013-10-02 | 成都千嘉科技有限公司 | Measuring method for gas flow of natural gas |
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