CN103542904A - Fuel gas metering method and device based on energy metering - Google Patents
Fuel gas metering method and device based on energy metering Download PDFInfo
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Abstract
The invention discloses a fuel gas metering method based on energy metering. The fuel gas metering device receives natural gas component data transmitted by a gas chromatography analyzer and determines real volume heating quantity of natural gas according to the natural gas components, real-time pressure and real-time temperature; then the natural gas use amount Vt under the actual temperature and pressure is metered and converted into fuel gas flow Vn under standard condition; finally, according to Vn, the energy E of the natural gas is determined, and energy metering is finished. The invention further provides a fuel gas metering device based on the energy metering and used for achieving the method. The fuel gas metering device receives the natural gas component data transmitted by the gas chromatography analyzer, the real volume heating quantity of the natural gas is calculated according to the natural gas components and the real-time temperature and pressure, the energy of the natural gas is calculated by combining natural gas volume flow, and energy metering is achieved. The method and device provides a novel metering mode which is reasonable and accurate.
Description
Technical field
The present invention relates to gas metering technical field, the combustible gas metering arrangement of a kind of particularly gas metering method based on energy meter, and realization based on energy meter.
Background technology
Rock gas be clean, high efficient energy sources, therefore increasing town dweller uses rock gas.Gas meter, flow meter is the equipment of metering user combustion gas use amount.Current natural gas metering device, Domestic gas table (Pi Mobiao) is all the volumetric flow rate under working condition of metering (situation during real work) condition, yet the compressibility due to rock gas, volume metering in different temperature and pressure situations is different, causes gas metering inaccurate.Current industry and commerce user adopts flowmeter and volume correction instrument to be used in conjunction with, it (is a standard atmospheric pressure in China that the volume of rock gas is all transformed under a standard state, 101.325KPa and 20 degrees Celsius), with regard to having solved variable volume flow, cause measuring inaccurate problem like this, be convenient to the relevant party clearing that carry on trade.
It is to obtain heat energy that user uses the object of combustion gas, if how much pay combustion gas cost of use according to the heat energy of use, seems more reasonable.Yet gas company by volume charges at present, because the constituent of rock gas is complicated, the constituent of the rock gas of different time separate sources is different, the content of every kind of composition also difference is larger, because the thermal value of every kind of composition is different, therefore, even the rock gas of the same volume under the status of criterion, due to the difference of component, the thermal value of rock gas is also different.Therefore it is also not accurate enough according to combustion gas volume, measuring.
Summary of the invention
The object of the invention is to overcome and existingly in prior art according to volume, carry out gas metering and have the inaccurate deficiency of metering, a kind of gas metering method based on energy meter is provided, a kind of combustible gas metering arrangement of realizing based on energy meter is provided simultaneously.
In order to realize foregoing invention object, the invention provides following technical scheme:
Step 1: combustible gas metering arrangement receives the gas component data that gas chromatographicanalyzer is measured;
Step 2: combustible gas metering arrangement receives the gas pressure P of pressure transducer Real-time Collection
tthe temperature T of data and temperature sensor Real-time Collection
tdata, and according to P
tand T
tmeasuring and calculating metering reference condition temperature t
2, pressure p
2under compressibility factor Z
mix;
Step 3: combustible gas metering arrangement is according to the component of rock gas and compressibility factor Z
mix, the true volume thermal value while calculating rock gas as real gas
described true volume thermal value
for: metering reference condition temperature t
2, pressure p
2under unit volume rock gas, in burning reference condition temperature t
1, pressure p
1under volume thermal value;
Step 4: the flowmeter counting unit metering actual temperature of combustible gas metering arrangement and the rock gas volume consumption V under pressure
t, and by rock gas volume consumption V
tbe converted to metering reference condition temperature t
2, pressure p
2under rock gas volume flow V
n;
Step 5: combustible gas metering arrangement is according to the true volume thermal value of rock gas
with rock gas volume flow V
n, determine the energy E of rock gas,
complete energy meter.
According to the embodiment of the present invention, the true volume thermal value while calculating rock gas as real gas in described step 3
method be:
First, according to the component of rock gas, determine volume of ideal thermal value when rock gas is regarded ideal gas as
described volume of ideal thermal value
for: metering reference condition temperature t
2, pressure p
2under unit volume rock gas, in burning reference condition temperature t
1, pressure p
1under volume thermal value,
Wherein,
For rock gas during as ideal gas, at burning reference temperature t
1, pressure P
1the volume thermal value of lower component j; x
jmole fraction for component j in rock gas, is measured by gas chromatographicanalyzer; N is the component quantity of rock gas;
Then, the volume of ideal thermal value according to rock gas during as ideal gas, the true volume thermal value while determining rock gas as real gas
Z
mixfor metering temperature t
2, pressure P
2under compressibility factor.
According to the embodiment of the present invention, the true volume thermal value while calculating rock gas as real gas in described step 3
can also adopt following methods:
First according to the component of rock gas, determine when rock gas is regarded ideal gas as, rock gas is at burning reference temperature t
1, pressure P
1under mole thermal value
wherein,
for rock gas during as ideal gas, at burning reference temperature t
1, pressure P
1mole thermal value of lower component j; x
jmole fraction for component j in rock gas, is measured by gas chromatographicanalyzer; N is the component quantity of rock gas;
Then according to mole thermal value of rock gas, by
volume of ideal thermal value while determining rock gas as ideal gas
wherein, R is mol gas constant, T
2for absolute temperature, T
2=t
2+ 273.15,
for metering temperature t
2, pressure P
2the rock gas of lower unit volume, in burning reference condition temperature t
1, pressure P
1under volume thermal value;
Last according to rock gas the volume of ideal thermal value during as ideal gas, the true volume thermal value while determining rock gas as real gas
Z
mixfor metering temperature t
2, pressure P
2under compressibility factor.
In said method, described burning reference condition temperature t
1be 20 ℃, pressure P
1it is a standard atmospheric pressure.Further, described metering temperature is 20 ℃, pressure P
2it is a standard atmospheric pressure.
As another kind of embodiment, when in step 3, rock gas is as real gas, measuring and calculating true volume thermal value
also can adopt combustion-type calorimeter directly to measure.
The present invention also provides a kind of combustible gas metering arrangement based on energy meter of realizing the inventive method, comprise the power supply unit that electric energy is provided, also comprise microprocessor, described microprocessor is connected with volumetric flow rate counting unit, for the pressure transducer of Real-time Collection gas pressure with for the temperature sensor of Real-time Collection natural gas temperature, described flowmeter counting unit is for measuring the rock gas volume consumption under actual temperature and pressure, and microprocessor also receives the gas component data of gas chromatographicanalyzer transmission by wired or wireless mode; Described microprocessor obtains compressibility factor according to the real-time pressure of rock gas and temperature, and according to compressibility factor, rock gas volume consumption is converted to metering reference condition temperature t
2, pressure p
2under rock gas volume flow, according to the component of rock gas and compressibility factor, obtain the volume thermal value of rock gas, then according to volume thermal value and volumetric flow rate, obtain the energy of rock gas.
According to the embodiment of the present invention, described gas chromatographicanalyzer is arranged in the described combustible gas metering arrangement based on energy meter, and gas chromatographicanalyzer passes through I
2c bus or 485 buses or serial ports or network interface connect microprocessor.
Preferably, described microprocessor is also connected with data remote unit.Described gas chromatographicanalyzer is arranged at the place, total input port of gas pipeline, and gas chromatographicanalyzer is by wired or wireless network connection data teletransmission unit.
Compared with prior art, beneficial effect of the present invention:
Gas metering method based on energy meter provided by the invention, first measure the component of rock gas, and according to the true volume thermal value of the component measuring and calculating rock gas of rock gas, and then measure the volumetric usage of rock gas and be converted to the rock gas volume flow under mark condition, according to true volume thermal value and rock gas volume flow, can obtain the energy of combustion gas, realization, based on energy meter, is a kind of brand-new gas consumption metering method, and this kind of gas metering mode is more reasonable.
The present invention is based on the combustible gas metering arrangement of energy meter, comprise the pressure transducer, temperature sensor and the volumetric flow rate counting unit that are connected with microprocessor, microprocessor receives the gas component data of gas chromatographicanalyzer transmission, microprocessor obtains the volume thermal value of rock gas according to the component of rock gas, real-time pressure and temperature, in conjunction with volumetric flow rate, obtain again the energy of rock gas, realize based on energy meter.
Accompanying drawing explanation:
Fig. 1 is the process flow diagram of the gas metering method based on energy meter described in embodiment.
Fig. 2 is the process flow diagram of calculating the true volume thermal value of rock gas in embodiment.
Fig. 3 is a kind of structure composition frame chart of realizing the combustible gas metering arrangement based on energy meter in embodiment.
Fig. 4 is the another kind of structure composition frame chart of the combustible gas metering arrangement based on energy meter in embodiment.
Embodiment
Below in conjunction with test example and embodiment, the present invention is described in further detail.But this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology realizing based on content of the present invention all belong to scope of the present invention.
With reference to figure 1, the present embodiment provides a kind of gas metering method based on energy meter, comprises the following steps:
Step 1: utilize gas chromatographicanalyzer to measure the component of rock gas, combustible gas metering arrangement receives the gas component data that gas chromatographicanalyzer is measured.Implement this step and can adopt two kinds of embodiments, wherein a kind of embodiment is to adopt the combustible gas metering arrangement that is provided with the gas chromatographicanalyzer based on MEMS, and gas chromatographicanalyzer passes through I
2c bus or 485 buses or serial ports are connected with the microprocessor of combustible gas metering arrangement, and the gas component of gas chromatographicanalyzer collection passes through I
2c bus or 485 buses or serial ports transfer to the microprocessor of combustible gas metering arrangement.
Another kind of embodiment, the component that offers each user's rock gas due to same gas company is the same, therefore can with gas chromatograph, measure the component of rock gas in total input port of (residential quarter) gas pipeline, then by wireless or cable network (by the network of checking meter of existing combustible gas metering arrangement), be transferred to each user's combustible gas metering arrangement.
Step 2: the pressure P of the pressure transducer Real-time Collection rock gas of combustible gas metering arrangement
t(absolute pressure, unit K pa), temperature sensor Real-time Collection temperature T
t(unit be degree Celsius), combustible gas metering arrangement is according to actual pressure P
twith actual temperature T
tcompressibility factor Z under measuring and calculating metering reference condition
mix.Compressibility factor Z
mixcomputing method refer to the gas flow calculating method > > of the Chinese invention patent application < < rock gas that the applicant submits on July 15th, 2013, publication number is 103335682A, application number is 201310301786.6, does not carefully state herein.
Step 3: combustible gas metering arrangement is according to the component of rock gas and compressibility factor Z
mix, the true volume thermal value while calculating rock gas as real gas
true volume thermal value is: metering reference condition temperature t
2, pressure p
2the rock gas of lower unit volume, in burning reference condition temperature t
1, pressure p
1under volume thermal value, that is to say true volume thermal value
the condition of obtaining be: rock gas is as real gas; Metering reference condition temperature t
2, pressure p
2under unit volume rock gas; Burning reference condition is temperature t
1, pressure p
1.Metering reference condition temperature t
2can value be 25 ℃, 20 ℃, 15 ℃ or 0 ℃, general, t
2be 20 ℃, pressure p
2it is a standard atmospheric pressure.Need to introduce two nouns, gross calorific value and net calorific values herein.Gross calorific value refers to: the heat that the gas of ormal weight discharges during perfect combustion in air, and when combustion reaction occurs, pressure P
1keep constant, the temperature of all products of combustion is reduced to the temperature of charge t with appointment
1identical temperature, except the water generating in burning is in temperature t
1all be condensed into down outside liquid state, all the other all products of combustion are gaseous state.Net calorific value refers to: the heat that the gas of ormal weight discharges during perfect combustion in air, and when combustion reaction occurs, pressure P
1keep constant, the temperature of all products of combustion is reduced to the temperature of charge t with appointment
1identical temperature, all products of combustion are gaseous state.Gross calorific value and net calorific value are the volume thermal values under two kinds of different concepts (being standard), and same gas company can select wherein a kind of as measurement standard.T in the world
1can value be 25 ℃, 20 ℃, 15 ℃ or 0 ℃, general, t
1be 20 ℃, P
1it is a standard atmospheric pressure.A high position/low level volume thermal value refers to a high position/net calorific value of unit volume rock gas, high-order volume thermal value when true high-order volume thermal value refers to rock gas as real gas, low level volume thermal value when true low level volume thermal value refers to rock gas as real gas.If the high-order volume thermal value of take is measurement standard, so the thermal value of true volume described in this step
for true high-order volume thermal value; If the low level volume thermal value of take is measurement standard, so the thermal value of true volume described in this step
for true low level volume thermal value.
In this step, the true high-order volume thermal value of rock gas is measured in enforcement or the mode of true low level volume thermal value has two kinds, and a kind of is to adopt combustion-type calorimeter directly to measure, and then measurement result is transferred to the microprocessor of combustible gas metering arrangement.Another kind of mode is according to the calculation of rock gas, to draw high-order volume thermal value or the low level volume thermal value of rock gas.With reference to figure 2, concrete comprises the following steps:
Step 301: combustible gas metering arrangement, according to the component of rock gas, is determined the desirable volume thermal value while regarding rock gas as ideal gas
volume of ideal thermal value
for: metering reference condition temperature t
2, pressure p
2under unit volume rock gas, in burning reference condition temperature t
1, pressure p
1under volume thermal value,
Wherein,
For rock gas during as ideal gas, burning reference temperature t
1the volume thermal value of component j in lower rock gas, its value is for known, and can table look-up by existing open source information obtains; x
jmole fraction for component j in rock gas, is measured by gas chromatographicanalyzer; N is the component quantity of rock gas, and rock gas is comprised of N component.If calculate the true high-order volume thermal value of rock gas under metering reference condition, so
high-order volume thermal value for component j in rock gas; If calculate the true low level volume thermal value of rock gas under metering reference condition, so
low level volume thermal value for component j in rock gas.
The realization of this step can also realize in the following manner.
First determine in temperature t
1mole thermal value of lower rock gas during as ideal gas
mole thermal value of rock gas
for rock gas during as ideal gas, burning reference temperature t
1mole thermal value of component j (high position or low level) in rock gas.If calculate a high position mole thermal value of rock gas under metering reference condition, so
for rock gas during as ideal gas, a high position of component j mole thermal value in rock gas; If calculate the low level mole thermal value of rock gas under metering reference condition, so
for rock gas during as ideal gas, the low level of component j mole thermal value in rock gas.
And then according to mole thermal value of rock gas, by
r is mol gas constant, T
2for absolute temperature, T
2=t
2+ 273.15 determine volume of ideal thermal value when rock gas is regarded ideal gas as
for metering reference condition temperature t
2, pressure p
2the rock gas of lower unit volume, in burning reference condition temperature t
1, pressure p
1under volume thermal value.
Step 302: the volume of ideal thermal value according to rock gas during as ideal gas, determine the true volume thermal value of (being that rock gas is as real gas) rock gas under truth
z
mixfor the compressibility factor under metering reference condition (is worked as t
2be 20 degrees Celsius, P
2be a compressibility factor that normal atmosphere is depressed).
Step 4: the flowmeter counting unit metering actual temperature of combustible gas metering arrangement and the rock gas consumption V under pressure (being commonly called as operating mode)
t, and by the rock gas consumption V under operating mode
tbe converted to the flow V under the status of criterion (be called for short mark condition, atmospheric pressure is 101.325Kpa, and temperature is 20 degrees Celsius)
n, V
n=V
t* P
t/ P
mark* (273.15+T
mark)/(273.15+T
t) * F
z 2, in formula,
for supercompressibility factor, Z
nfor the compressibility factor under mark condition, Z
gfor the compressibility factor under operating mode.By the rock gas consumption V under operating mode
tbe converted to the flow V under the status of criterion
nconcrete grammar refer to the gas flow calculating method > > of the Chinese invention patent application < < rock gas that the applicant submits on July 15th, 2013, publication number is 103335682A, application number is 201310301786.6, does not carefully state herein.
Step 5: according to the true volume thermal value of rock gas
with the flow V under mark condition
n, determine and the energy of rock gas complete energy meter,
the energy that can supply with according to the combustion gas providing measures user's gas consumption, more reasonable.
With reference to figure 3, Fig. 4, the present invention also provides a kind of combustible gas metering arrangement based on energy meter.Combustible gas metering arrangement based on energy meter comprises microprocessor, volumetric flow rate counting unit, pressure transducer and temperature sensor, and pressure transducer, flowmeter counting unit and temperature sensor are all connected with microprocessor by I/O interface.Microprocessor also receives the gas component data of gas chromatographicanalyzer transmission by wireless or wired mode.With reference to figure 4, gas chromatographicanalyzer adopts based on MEMS(MEMS (micro electro mechanical system)) gas chromatographicanalyzer, volume is little, gas chromatographicanalyzer passes through I
2c bus or 485 buses or serial ports or network interface are connected with microprocessor.With reference to figure 3, in combustible gas metering arrangement, be provided with data remote unit and be connected with microprocessor, gas chromatographicanalyzer can connect gas component data transmission to microprocessor by data transmission unit.By this kind of mode, receive the gas component data of gas chromatographicanalyzer transmission, adopt a gas chromatographicanalyzer at place, the total input port of gas pipeline, having avoided arranging gas chromatographicanalyzer on each combustible gas metering arrangement measures each user's gas component, save the usage quantity of gas chromatographicanalyzer equipment, in the situation that realizing based on energy meter, also saved cost.Certain, combustible gas metering arrangement also comprises power supply unit, action button and display screen, power supply unit provides electric energy for whole combustible gas metering arrangement, action button for carrying out data input when needs hand input-data, display screen is used for showing metering result, and action button can embed and in display screen, form touch screen.
After the component of gas chromatographicanalyzer measurement rock gas, pass through wired or wireless Internet Transmission to microprocessor.Pressure transducer is for gathering the pressure of rock gas, temperature sensor is for Real-time Collection temperature, rock gas volume consumption under volumetric flow rate counting unit metering actual temperature and pressure (operating mode), microprocessor calculates compressibility factor according to the real-time pressure of rock gas and temperature, then according to compressibility factor, the rock gas volume consumption of metering is converted to rock gas volume flow.Microprocessor also obtains the true volume thermal value of rock gas according to the component of rock gas and compressibility factor, finally, according to the gas discharge under the true volume thermal value of rock gas and mark condition, determine combustion gas energy, completes energy meter.
The implementation of data remote unit is wired or wireless mode, and wired mode for example carries out teletransmission by M-bus bus, and wireless mode for example wireless network card is realized wireless network transmissions.Data remote unit is except receiving the gas component data of gas chromatographicanalyzer transmission, also can be used for the Natural gas consumption of combustible gas metering arrangement (calculating based on energy) directly to transfer to the monitor terminal of gas company, avoid the person of checking meter to go to each user's family scene to check meter, reduced the workload of the person of checking meter.For the user who pays the fees in advance, gas company also can send user balance information to combustible gas metering arrangement by data remote unit, and shows by display screen, with reminding user, pays the fees and supplements with money in time.
With reference to figure 4, as further preferred embodiment, the combustible gas metering arrangement that the present invention is based on energy meter also comprises acousto-optic warning unit, vibration transducer and GSM/GPRS unit, and acousto-optic warning unit, vibration transducer and GSM/GPRS unit are all connected with microprocessor.Pressure transducer is for detecting in real time the pressure of rock gas, can learn gas pressure change thus, thereby (gaseous tension is excessive or do not using the time period of combustion gas air pressure change to be detected to judge whether gas leakage, can be judged to be gas leakage), if gas leakage detected, by acousto-optic warning unit, send alerting signal, simultaneously, by GSM/GPRS unit, the mobile phone terminal to user sends SMS message microprocessor, informs that in time user has the information of gas leakage.Vibration transducer is for detection of the shake intensity of combustible gas metering arrangement, and when shake intensity reaches setting value, microprocessor by-pass valve control is closed, and the judder while avoiding earthquake threatens uses gas safety.
Disclosed all features in this instructions, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this instructions (comprising any accessory claim, summary and accompanying drawing), unless narration especially all can be replaced by other equivalences or the alternative features with similar object.That is,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
Claims (10)
1. the gas metering method based on energy meter, is characterized in that, comprises the following steps:
Step 1: combustible gas metering arrangement receives the gas component data that gas chromatographicanalyzer is measured;
Step 2: step 2: combustible gas metering arrangement receives the gas pressure P of pressure transducer Real-time Collection
tthe temperature T of data and temperature sensor Real-time Collection
tdata, and according to P
tand T
tmeasuring and calculating metering reference condition temperature t
2, pressure p
2under compressibility factor Z
mix;
Step 3: combustible gas metering arrangement is according to the component of rock gas and compressibility factor Z
mix, the true volume thermal value while calculating rock gas as real gas
described true volume thermal value
for: metering reference condition temperature t
2, pressure p
2under unit volume rock gas, in burning reference condition temperature t
1, pressure p
1under volume thermal value;
Step 4: the flowmeter counting unit metering actual temperature of combustible gas metering arrangement and the rock gas volume consumption V under pressure
t, and by rock gas volume consumption V
tbe converted to metering reference condition temperature t
2, pressure p
2under rock gas volume flow V
n;
Step 5: combustible gas metering arrangement is according to the true volume thermal value of rock gas
with rock gas volume flow V
n, determine the energy E of rock gas,
complete energy meter.
2. the gas metering method based on energy meter according to claim 1, is characterized in that, the true volume thermal value while calculating rock gas as real gas in described step 3
method be:
First, according to the component of rock gas, determine volume of ideal thermal value when rock gas is regarded ideal gas as
described volume of ideal thermal value
for: metering reference condition temperature t
2, pressure p
2under unit volume rock gas, in burning reference condition temperature t
1, pressure p
1under volume thermal value,
Wherein,
For rock gas during as ideal gas, at burning reference temperature t
1, pressure P
1the volume thermal value of lower component j; x
jmole fraction for component j in rock gas, is measured by gas chromatographicanalyzer; N is the component quantity of rock gas;
Then, the volume of ideal thermal value according to rock gas during as ideal gas, the true volume thermal value while determining rock gas as real gas
Z
mixfor metering temperature t
2, pressure P
2under compressibility factor.
3. the gas metering method based on energy meter according to claim 1, is characterized in that, the true volume thermal value while calculating rock gas as real gas in described step 3
method be:
First according to the component of rock gas, determine when rock gas is regarded ideal gas as, rock gas is at burning reference temperature t
1, pressure P
1under mole thermal value
wherein,
for rock gas during as ideal gas, at burning reference temperature t
1, pressure P
1mole thermal value of lower component j; x
jmole fraction for component j in rock gas, is measured by gas chromatographicanalyzer; N is the component quantity of rock gas;
Then according to mole thermal value of rock gas, by
volume of ideal thermal value while determining rock gas as ideal gas
wherein, R is mol gas constant, T
2for absolute temperature, T
2=t
2+ 273.15,
for metering temperature t
2, pressure P
2the rock gas of lower unit volume, in burning reference condition temperature t
1, pressure P
1under volume thermal value;
Last according to rock gas the volume of ideal thermal value during as ideal gas, the true volume thermal value while determining rock gas as real gas
Z
mixfor metering temperature t
2, pressure P
2under compressibility factor.
4. the gas metering method based on energy meter according to claim 1, is characterized in that, described burning reference condition temperature t
1be 20 ℃, pressure P
1it is a standard atmospheric pressure.
5. the gas metering method based on energy meter according to claim 4, is characterized in that, described metering reference condition temperature t
2be 20 ℃, pressure P
2it is a standard atmospheric pressure.
6. the gas metering method based on energy meter according to claim 5, is characterized in that, measures rock gas as real gas in step 3, measuring and calculating true volume thermal value
method be: adopt combustion-type calorimeter directly to measure.
7. realize a kind of combustible gas metering arrangement based on energy meter of method described in claim 2 or 3, comprise the power supply unit that electric energy is provided, also comprise microprocessor, described microprocessor is connected with volumetric flow rate counting unit, for the pressure transducer of Real-time Collection gas pressure with for the temperature sensor of Real-time Collection natural gas temperature, described flowmeter counting unit is for measuring the rock gas volume consumption under actual temperature and pressure, and microprocessor also receives the gas component data of gas chromatographicanalyzer transmission by wired or wireless mode;
Described microprocessor obtains compressibility factor according to the real-time pressure of rock gas and temperature, and according to compressibility factor, rock gas volume consumption is converted to metering reference condition temperature t
2, pressure p
2under rock gas volume flow, according to the component of rock gas and compressibility factor, obtain the volume thermal value of rock gas, then according to volume thermal value and volumetric flow rate, obtain the energy of rock gas.
8. the combustible gas metering arrangement based on energy meter according to claim 7, is characterized in that, described gas chromatographicanalyzer is arranged in the described combustible gas metering arrangement based on energy meter, and gas chromatographicanalyzer passes through I
2c bus or 485 buses or serial ports or network interface connect microprocessor.
9. the combustible gas metering arrangement based on energy meter according to claim 7, is characterized in that, described microprocessor is also connected with data remote unit.
10. the combustible gas metering arrangement based on energy meter according to claim 9, is characterized in that, described gas chromatographicanalyzer is arranged at the place, total input port of gas pipeline, and gas chromatographicanalyzer is by wired or wireless network connection data teletransmission unit.
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| CN112414592A (en) * | 2020-11-19 | 2021-02-26 | 上海真兰仪表科技股份有限公司 | Gas energy metering flowmeter |
| CN112946231A (en) * | 2021-02-04 | 2021-06-11 | 成都秦川物联网科技股份有限公司 | Natural gas full-period energy metering system and method |
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| CN114387033A (en) * | 2022-01-14 | 2022-04-22 | 成都秦川物联网科技股份有限公司 | Charging method and system based on natural gas energy |
| CN114493922A (en) * | 2022-01-24 | 2022-05-13 | 成都秦川物联网科技股份有限公司 | Centralized operation type natural gas energy metering device and Internet of things system |
| CN114493922B (en) * | 2022-01-24 | 2024-06-21 | 成都秦川物联网科技股份有限公司 | Centralized operation formula natural gas energy metering device and thing networking system |
| CN115790908A (en) * | 2023-02-08 | 2023-03-14 | 成都千嘉科技股份有限公司 | Natural gas metering method and device based on heat metering |
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