CN109164241A - Gas quality detection system and gas quality detection method - Google Patents
Gas quality detection system and gas quality detection method Download PDFInfo
- Publication number
- CN109164241A CN109164241A CN201811145687.2A CN201811145687A CN109164241A CN 109164241 A CN109164241 A CN 109164241A CN 201811145687 A CN201811145687 A CN 201811145687A CN 109164241 A CN109164241 A CN 109164241A
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- gas
- quality detection
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- pipeline
- sensor
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- 238000001514 detection method Methods 0.000 title claims abstract description 61
- 239000007789 gas Substances 0.000 claims abstract description 163
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 239000000567 combustion gas Substances 0.000 claims description 75
- 238000010521 absorption reaction Methods 0.000 claims description 19
- 238000012360 testing method Methods 0.000 claims description 18
- 238000012372 quality testing Methods 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 9
- 239000002737 fuel gas Substances 0.000 abstract 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 17
- 238000000034 method Methods 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to a fuel gas quality detection system and a fuel gas quality detection method, which comprise a gas source, a gas transmission pipeline, a flow detection part arranged in the gas transmission pipeline and used for detecting the volume flow of fuel gas flowing through the gas transmission pipeline, a quality detection part arranged in the gas transmission pipeline and used for detecting the mass flow of the fuel gas flowing through the gas transmission pipeline, a switch valve and a controller, wherein the switch valve and the controller are arranged in the gas transmission pipeline and used for controlling the on-off of the fuel gas in the gas transmission pipeline, the gas source is connected with the gas inlet end of the gas transmission pipeline, the gas source, the switch valve, the flow detection part and the quality detection part are respectively and electrically connected with the controller, the quality detection part comprises an infrared sensor and an infrared light source which are arranged in the gas transmission pipeline, and the infrared light source and the infrared sensor are arranged oppositely. The gas quality detection system and the gas quality detection method provided by the invention can simultaneously detect the volume flow and the mass flow of gas, thereby realizing the energy metering of the gas.
Description
Technical field
The present invention relates to field of flow meters, and in particular to a kind of combustion gas quality detection system and combustion gas quality detection method.
Background technique
GB12206-90 gives the definition of China's gas calorific value: (0 DEG C, 101.3KPa) of every standard cubic meter dry combustion
The heat generated when gas completely burned.With the formal reality of standard GB/T/T22723-2008 " measurement of natural gas energy "
It applies, the metering method of China's natural gas starts to be changed from volume metering to energy meter.Energy meter can disappear to a certain extent
When except volume metering because caused by metering reference condition is different dispute on price, more can adequately embody natural gas as fuel
Real use value, therefore from flow measurement mode to energy meter mode transition be Natural Gas In China metering development certainty
Trend.
And multiple devices cooperating is usually required for the energy meter of combustion gas in the prior art, therefore increase combustion gas
The cost of energy meter, and since multiple devices participate in jointly, increase the error of energy meter.
Summary of the invention
The present invention provides a kind of combustion gas quality detection system and combustion gas quality detection method, can detection gas simultaneously body
Product flow and mass flow, and then realize the energy meter to gas.
To achieve the above object, it the present invention provides a kind of combustion gas quality detection system, including gas source, gas pipeline, sets
The flow testing division for the volume flow for detecting the combustion gas for flowing through gas pipeline being placed in gas pipeline is set to appendix
The quality testing portion of the mass flow for detecting the combustion gas for flowing through gas pipeline in road is set in the gas pipeline simultaneously
For controlling the switch valve and controller of combustion gas on-off in gas pipeline, the inlet end company of the gas source and the gas pipeline
It connects, the gas source, switch valve, flow testing division, quality detection section are not electrically connected with the controller, the quality testing portion
Including the infrared sensor and infrared light supply being set in the gas pipeline, the infrared light supply and the infrared sensor phase
To setting.
Preferably, the flow testing division includes impeller and sensor module, the impeller and the sensor
Component electrical connection, the sensor module are electrically connected with the controller.
Preferably, gas absorption chamber, the gas absorption chamber and the gas transmission are connected on the gas pipeline
The inside of pipeline is connected to, and the infrared sensor is set in the gas absorption chamber, and the infrared light supply is fixedly installed on institute
It states on the inner wall of gas pipeline.
Preferably, the sensor module includes the stream for detecting the volume flow of gas pipeline internal gas
Quantity sensor, the flow sensor are electrically connected with the impeller.
Preferably, the sensor module further includes the pressure for detecting the pressure of gas pipeline internal gas
The temperature sensor of sensor and the temperature for detecting gas pipeline internal gas.
Preferably, the inner wall of the impeller and the gas pipeline is rotatably connected and same with the gas pipeline
Axis setting, the impeller are connected with preceding rectifier close to the gas source side, and the other side of the impeller is equipped with rear rectifier.
Preferably, optical filter is equipped in the gas absorption chamber, the optical filter is set to the infrared light supply
Between the infrared sensor.
Preferably, the infrared sensor is Miniature infrared gas sensor, and the infrared light supply is electrical modulation
Infrared light supply.
Preferably, the infrared sensor includes for detecting the concentration for being used for each component part of detection gas
Detector and signal amplifier, the detector are electrically connected with the signal amplifier, the signal amplifier and the control
Device electrical connection.
To realize above-mentioned identical purpose, the present invention also provides a kind of combustion gas using the combustion gas quality detection system
Quality determining method includes the following steps: that (1) turns on the switch valve and gas source switch, and gas source is supplied into gas pipeline；(2) matter
Concentration of the test section detection by CH4 the and CnHm gas in the combustion gas inside gas pipeline is measured, combustion gas detected is each
The concentration of component part is as input and is transmitted to controller；(3) volume of flow testing division detection gas pipeline internal gas
Flow is as input and is transmitted to controller；(4) controller is put according to the concentration of the volume flow and each component part of combustion gas
Big integrating calculates the calorific value of combustion gas.
A kind of combustion gas quality detection system and combustion gas quality detection method described in above-mentioned technical proposal, pass through flow detection
Portion's detection, Jian Ce be by inside gas pipeline by quality detection section by the volume flow of the combustion gas inside gas pipeline
Combustion gas in CH4 and CnHm gas concentration, using volume flow detected and the concentration of each component part of combustion gas as
Controller is inputted and is transmitted to, controller accurately measures the calorific value of combustion gas by high-precision amplification integrating, into
And realize the energy meter to gas.
Detailed description of the invention
As Fig. 1 is the structural diagram of the present invention.
Wherein: 1, preceding rectifier；2, impeller；3, rear rectifier；4, infrared light supply；5, gas pipeline；6, gas absorption chamber；
7, infrared sensor；8, controller；9, flow and temperature sensor；10, pressure sensor；11, optical filter；12, switch valve；
13, gas source.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
As shown in Figure 1, be a kind of combustion gas quality detection system provided by the present invention, including gas source 13, gas pipeline 5,
Be set in gas pipeline 5 for detect the combustion gas for flowing through gas pipeline volume flow flow testing division, be set to it is defeated
The quality testing portion of the mass flow for detecting the combustion gas for flowing through gas pipeline in feed channel is set to the gas pipeline
Switch valve 12 and controller 8 interior and for controlling combustion gas on-off in gas pipeline, the gas source 13 and the gas pipeline
Inlet end connection, the gas source 13, switch valve 12, flow testing division, quality detection section are not electrically connected with the controller 8,
The quality testing portion includes the infrared sensor 7 and infrared light supply 4 being set in the gas pipeline, the infrared light supply 4
It is oppositely arranged with the infrared sensor 7.Specifically, the present embodiment is passed through inside gas pipeline 5 by flow testing division detection
Combustion gas volume flow, the CH4 (methane) in the combustion gas inside gas pipeline 5 Jian Ce be passed through by quality detection section
With the concentration of CnHm (other hydrocarbons in addition to methane) gas, by volume flow detected and each component part of combustion gas
Concentration as inputting and being transmitted to controller 8, controller 8 is accurately measured by high-precision amplification integrating
The calorific value of combustion gas, to realize the energy meter to gas.
In the present embodiment, the flow testing division includes impeller 2 and sensor module, the impeller 2 and the sensor
Component electrical connection, the sensor module are electrically connected with the controller 8, it is preferable that the sensor module includes for examining
The flow sensor of the volume flow of 5 internal gas of gas pipeline is surveyed, the flow sensor is electrically connected with the impeller 2, is had
Body, when combustion gas is passed through gas pipeline 5 by impeller 2, impeller 2 is rotated, the flow sensor passes through detection leaf
Calculated result is transferred to controller 8 to calculate the volume flow of combustion gas by the turnning circle of wheel 2.
Further, gas absorption chamber 6, the gas absorption chamber 6 and the appendix are connected on the gas pipeline 5
The inside in road 5 is connected to, and the infrared sensor 7 is set in the gas absorption chamber 6, wherein the effect of gas absorption chamber 6 is
Gas sample is obtained out of gas pipeline 5 and enters gas absorption chamber 6, and to acquired gas sample in gas absorption chamber 6
Quality testing is carried out, the infrared light supply 4 is fixedly installed on the inner wall of the gas pipeline 5, it is preferable that the infrared sensing
Device 7 is the Miniature infrared gas sensor of dual-beam, and the infrared light supply 4 is electrical modulation infrared light supply, the infrared sensor 7
Including for detect be used for each component part of detection gas concentration detector and signal amplifier, the detector with it is described
Signal amplifier electrical connection, the signal amplifier are electrically connected with the controller 8, wherein the infrared sensing of the dual-beam
Device 7 can accurately measure CH4 and CnHm gas concentration based on principle of the gas to the Lambert-Beer's law of infrared Absorption simultaneously,
And the concentration of each gas component is calculated automatically.
Further, since the combustion gas being passed through in gas pipeline 5 is not necessarily under mark condition the (gas parameter under mark condition
Are as follows: pressure 101.325kPa, temperature are 0 DEG C), therefore controller 8 is being needed to examine quality before carrying out flow measurement to combustion gas
The volume flow of combustion gas detected by survey portion is converted into the volume flow under mark condition, in the present embodiment, the sensor module
Pressure sensor 10 including the pressure for detecting 5 internal gas of gas pipeline and for detecting 5 internal gas of gas pipeline
Temperature temperature sensor, detect the combustion gas inside gas pipeline 5 respectively by pressure sensor 10 and temperature sensor
Pressure and temperature, with the temperature of combustion gas detected by the volume flow of combustion gas detected by quality testing portion, temperature sensor
The pressure of combustion gas detected by degree, pressure sensor 10 is counted as inputting and being transmitted to controller 8 jointly by controller 8
Calculating be passed through volume flow of combustion gas gas pipeline 5 inside in the case where marking condition, by mark condition under combustion gas volume flow and
The concentration of combustion gas component accurately measures the calorific value of combustion gas by high-precision amplification integrating, it is preferable that this reality
It applies in example, the flow sensor and temperature sensor is integrated into flow and temperature sensor 9.
In addition, for the detection accuracy by impeller 2 to improve flow testing division for making combustion gas steady ordered, the present embodiment
In, the gas pipeline 5 is in hollow cylindrical shape, the inner wall of the impeller 2 and the gas pipeline 5 be rotatably connected and with
The gas pipeline 5 is coaxially disposed, wherein the inner wall of 2 bearing of impeller and gas pipeline 5 is rotatably connected, the gas transmission
Pipeline 5 includes air inlet and air outlet, and the impeller 2 is connected with preceding rectifier 1 close to 13 side of gas source, passes through setting
Preceding rectifier 1, so that the combustion gas of steady ordered is converted into before through blade into the combustion gas of the disorder of gas pipeline 5, thus
Improve the detection accuracy of flow testing division.Further, for make combustion gas steady ordered by quality testing portion to improve matter
The detection accuracy for measuring test section, in the present embodiment, the other side of the impeller 2 is connected with rear rectifier 3, and combustion gas passes through impeller 2
Afterwards due to the effect of impeller 2, and the gas of disorder is become, the combustion for the disorder flowed out from impeller 2 is made by rectifier 3 after setting
Gas is again converted to the combustion gas of steady ordered, then again by quality testing portion, to improve the detection essence in quality testing portion
Degree.
It further, is the detection accuracy for further increasing quality testing portion, in the present embodiment, the gas absorption chamber 6
Interior to be equipped with optical filter 11, the optical filter 11 is set between the infrared light supply 4 and the infrared sensor 7, it is preferable that institute
It states optical filter 11 and selects highly sensitive optical filter 11, by the way that optical filter 11 is arranged, the light line issued from infrared light supply 4 is through filtering
Mating plate 11 enters back into gas absorption chamber 6, the filtration to the infrared light supply 4 entered in gas absorption chamber 6 is realized, to guarantee
The light source entered in gas absorption chamber 6 is essentially infrared light, to further improve the detection accuracy in quality testing portion.
In addition, the present embodiment additionally provides a kind of combustion gas quality detection side using the combustion gas quality detection system
Method includes the following steps: that (1) turns on the switch valve 12 and gas source 13 switchs, and gas source 13 is supplied into gas pipeline；(2) quality is examined
The detection of survey portion is respectively made up of combustion gas detected the concentration of the CH4 and CnHm gas in the combustion gas inside gas pipeline
Partial concentration is as input and is transmitted to controller；(3) volume flow of flow testing division detection gas pipeline internal gas
As input and it is transmitted to controller；(4) controller 8 amplifies according to the volume flow and the concentration of each component part of combustion gas
The calorific value of integrating calculating combustion gas.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of combustion gas quality detection system, which is characterized in that including gas source, gas pipeline, the use being set in gas pipeline
The flow testing division of the volume flow of the combustion gas of gas pipeline is flowed through in detection, is set to flowing through in gas pipeline for detecting
The quality testing portion of the mass flow of the combustion gas of gas pipeline is set in the gas pipeline and for controlling in gas pipeline
The switch valve and controller of combustion gas on-off, the gas source are connect with the inlet end of the gas pipeline, the gas source, switch valve,
Flow testing division, quality detection section are not electrically connected with the controller, and the quality testing portion includes being set to the gas transmission
Infrared sensor and infrared light supply in pipeline, the infrared light supply are oppositely arranged with the infrared sensor.
2. combustion gas quality detection system according to claim 1, which is characterized in that the flow testing division include impeller and
Sensor module, the impeller are electrically connected with the sensor module, and the sensor module is electrically connected with the controller.
3. combustion gas quality detection system according to claim 1, which is characterized in that be connected with gas on the gas pipeline
Absorption chamber, the gas absorption chamber are connected to the inside of the gas pipeline, and the infrared sensor is set to the gas and inhales
Interior is received, the infrared light supply is fixedly installed on the inner wall of the gas pipeline.
4. combustion gas quality detection system according to claim 2, which is characterized in that the sensor module includes for examining
The flow sensor of the volume flow of gas pipeline internal gas is surveyed, the flow sensor is electrically connected with the impeller.
5. combustion gas quality detection system according to claim 2, which is characterized in that the sensor module further includes being used for
Detect the pressure sensor of the pressure of gas pipeline internal gas and the temperature of the temperature for detecting gas pipeline internal gas
Sensor.
6. combustion gas quality detection system according to claim 1, which is characterized in that the impeller and the gas pipeline
Inner wall is rotatably connected and is coaxially disposed with the gas pipeline, and the impeller is connected with preceding rectification close to the gas source side
The other side of device, the impeller is equipped with rear rectifier.
7. combustion gas quality detection system according to claim 3, which is characterized in that be equipped with and filter in the gas absorption chamber
Piece, the optical filter are set between the infrared light supply and the infrared sensor.
8. combustion gas quality detection system according to claim 3, which is characterized in that the infrared sensor is miniature infrared
Gas sensor, the infrared light supply are electrical modulation infrared light supply.
9. combustion gas quality detection system according to claim 1, which is characterized in that the infrared sensor includes for examining
Survey the detector and signal amplifier of the concentration for each component part of detection gas, the detector and the signal amplifier
Electrical connection, the signal amplifier are electrically connected with the controller.
10. a kind of combustion gas quality detection method using combustion gas quality detection system described in any one of claim 1-9,
It is characterized by comprising the following steps: (1) turns on the switch valve and gas source switch, gas source is supplied into gas pipeline；(2) quality
Test section detection passes through the concentration of the CH4 and CnHm gas in the combustion gas inside gas pipeline, by combustion gas each group detected
As input and controller is transmitted at the concentration of part；(3) volume flow of flow testing division detection gas pipeline internal gas
Amount is as input and is transmitted to controller；(4) controller amplifies according to the volume flow and the concentration of each component part of combustion gas
The calorific value of integrating calculating combustion gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145687.2A CN109164241A (en) | 2018-09-29 | 2018-09-29 | Gas quality detection system and gas quality detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145687.2A CN109164241A (en) | 2018-09-29 | 2018-09-29 | Gas quality detection system and gas quality detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109164241A true CN109164241A (en) | 2019-01-08 |
Family
ID=64892823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811145687.2A Pending CN109164241A (en) | 2018-09-29 | 2018-09-29 | Gas quality detection system and gas quality detection method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109164241A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531396A (en) * | 2021-08-13 | 2021-10-22 | 四川博德蚁穴建设工程有限公司 | Conveying device based on gas conveying and convenient to adjust |
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Application publication date: 20190108 |