CN109668943A - A kind of gas component on-line measurement device - Google Patents
A kind of gas component on-line measurement device Download PDFInfo
- Publication number
- CN109668943A CN109668943A CN201811573318.3A CN201811573318A CN109668943A CN 109668943 A CN109668943 A CN 109668943A CN 201811573318 A CN201811573318 A CN 201811573318A CN 109668943 A CN109668943 A CN 109668943A
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- component
- gas
- temperature
- sensitive element
- processing module
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- 238000005259 measurement Methods 0.000 title claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 238000004451 qualitative analysis Methods 0.000 abstract description 3
- 238000004445 quantitative analysis Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 29
- 229910052724 xenon Inorganic materials 0.000 description 5
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011545 laboratory measurement Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
- G01N27/18—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/045—Circuits
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention belongs to gas component fields of measurement, and in particular to a kind of gas component on-line measurement device, including measurement component and Signal acquiring and processing module；Measurement component includes tube body and the temperature-sensitive element for being set to tubular body, and tube body includes air inlet and gas outlet, and temperature-sensitive element is connect by lead with Signal acquiring and processing module；Signal acquiring and processing module is used to acquire and handle the resistance value information of temperature-sensitive element.On-line measurement is realized while reducing gas component measurement cost, simplify measurement process, component separation is not needed to carry out without progress component qualitative analysis, mixing gas component is directly entered detector and carries out quantitative analysis, utilize the mixed gas of binary composition, the principle that its apparent thermal conductivity changes with the variation of binary composition volume by volume concentration, external standard curve is carried out using the thermal capacitance difference of different component mixing match, show that the content of pure gas in mixed gas, data handling procedure are simple.
Description
Technical field
The invention belongs to gas component fields of measurement, and in particular to a kind of gas component on-line measurement based on temperature-sensitive element
Device.
Background technique
Traditional gas component measurement method includes mass spectrography and chromatography.Equipment price needed for the former is expensive, and equipment
Footprints are larger, realize that on-line measurement difficulty is larger；It is relatively common that the latter is based on laboratory measurement analysis, but there is also following
Problem: first is that set of instrument and equipment is needed, second is that needing to solve the interface problem of system, third is that needing using specific gas
Component separation means are just able to achieve the qualitative and quantitative analysis in relation to component.
Summary of the invention
In order to realize on-line measurement while reducing gas component measurement cost, simplify measurement process, the present invention provides one
Gas component on-line measurement device of the kind based on temperature-sensitive element, binding signal acquisition and output module on-line measurement specific components
The content for forming a certain component in sample, the sample of most compositions is accounted for especially suitable for binary composition.
The technical solution of the invention is as follows provides a kind of gas component on-line measurement device based on temperature-sensitive element, special
Different place is: including measurement component and Signal acquiring and processing module；
Above-mentioned measurement component includes tube body and the temperature-sensitive element for being set to tubular body, above-mentioned tubular body include air inlet with
Gas outlet, temperature-sensitive element are connect by lead with Signal acquiring and processing module；
Above-mentioned Signal acquiring and processing module is used to acquire and handle the resistance value information of temperature-sensitive element.
Further, tube body is threeway, and two transverse ports of threeway are respectively as air inlet and gas outlet, above-mentioned temperature-sensitive
Element is located in the another port of threeway, and one end of temperature-sensitive element is located in gas circuit, and the other end of temperature-sensitive element passes through thermocouple
Lead and signal output terminal are connect with Signal acquiring and processing module.
Further, Signal acquiring and processing module is by the volume by volume concentration C/% and resistance of gas a kind of in binary composition
Change amplitude with the presentation of pulse peak height H-shaped formula:
H=1531-9.22 × C (1).
Further, the material of above-mentioned threeway is stainless steel.
Further, above-mentioned temperature-sensitive element is E type thermocouple.
Further, it is 20~40mm that the tube body of Stainless steel tee, which is length, and internal diameter is 3~6mm.
The beneficial effects of the present invention are:
1, it using on-line measurement device of the invention, does not need progress component and separates without progress component qualitative analysis,
Mixing gas component is directly entered detector and carries out quantitative analysis, utilizes the mixed gas of binary composition, apparent thermal conductivity
The principle changed with the variation of binary composition volume by volume concentration is carried out outer using the thermal capacitance difference of different component mixing match
Curve is marked, show that the content of pure gas in mixed gas, data handling procedure are simple；
2, on-line measurement device volume of the invention is small, and structure is simple, and manufacturing cost is low, may be implemented to monitor on-line.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Appended drawing reference in figure are as follows:
31- tube body；32- air inlet；The gas outlet 33-；34- temperature-sensitive element；36- thermocouple lead, 37- signal output end
Son, 39- measuring device.
Specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention will be further described.
It will be seen from figure 1 that in the present embodiment gas component on-line measurement device include measuring device and signal acquisition with
Processing module；Measuring device includes tube body 31 and the temperature-sensitive element being set to inside tube body 31 34, and temperature-sensitive element 34 is by drawing
Line is connect with Signal acquiring and processing module；Tube body 31 includes air inlet 32 and gas outlet 33, and gas is entered by air inlet 32
Tube body 31, so that 34 resistance value of temperature-sensitive element changes, Signal acquiring and processing module acquires and handles resistance value information, gas
Body enters filing bottle by gas outlet 33.
Its middle tube body can be a Stainless steel tee, and two transverse ports of threeway are respectively as air inlet and outlet
Mouthful, temperature-sensitive element is placed in the another port of the threeway, one end of temperature-sensitive element, which is located in the lateral pipeline section of threeway, is located at gas
Lu Zhong, the other end of temperature-sensitive element are connect with by thermocouple lead 36 with the signal input part of signal output terminal 37, signal
The signal output end of output terminal 37 is connect with Signal acquiring and processing module.The tube body of Stainless steel tee is in the present embodiment
Length is 20~40mm, and internal diameter is 3~6mm；Temperature-sensitive element is E type thermocouple.
By two component under test gas known to gaseous species, it is passed through the measuring device, it is dense that online stabilizing gas may be implemented
Degree detection, because the thermal coefficient of gas with various at the same temperature has differences, for the mixed gas of binary composition, table
Thermal coefficient is seen to change with the variation of binary composition volume by volume concentration.So when binary mixture passes through temperature-sensitive element
When, the variation of temperature-sensitive element resistance value can be caused.It, can be by gas a kind of in binary composition using signal acquisition and output module
Volume by volume concentration (C/%) connected with resistance variations amplitude, thus achieve the purpose that detect binary composition composition.Resistance
Change amplitude to acquire and convert by data, is presented in the form of pulse peak height (h), following public affairs are met with the variation relation of C
Formula (under specified conditions):
H=1531-9.22 × C (1)
The device can be applied to carry out online stable xenon detection in xenon enriching and purifying system, concentration is completed to be radiated
After property activity measurement, the device is introduced a gas into, when the component of nitrogen and xenon, which changes, passes through temperature-sensitive element, heat can be caused
The variation of quick element resistance value.Wherein xenon content is obtained using formula (1).And can by the device come monitoring system whether
Normally, such as: if the volume by volume concentration of xenon deviates normal value ± 20%, i.e. decision-making system is operating abnormally.
Claims (6)
1. a kind of gas component on-line measurement device, it is characterised in that: including measurement component and Signal acquiring and processing module；
The measurement component includes tube body (31) and is set to the internal temperature-sensitive element (34) of tube body (31), and the tube body includes
Air inlet and gas outlet, temperature-sensitive element (34) are connect by lead with Signal acquiring and processing module；
The Signal acquiring and processing module is used to acquire and handle the resistance value information of temperature-sensitive element.
2. gas component on-line measurement device according to claim 1, it is characterised in that: tube body (31) is threeway, threeway
Two transverse ports respectively as air inlet and gas outlet, the temperature-sensitive element (34) is located in the another port of threeway, heat
One end of quick element (34) is located in gas circuit, and the other end of temperature-sensitive element (34) passes through thermocouple lead (36) and signal output end
Sub (37) are connect with Signal acquiring and processing module.
3. gas component on-line measurement device according to claim 2, it is characterised in that: Signal acquiring and processing module will
A kind of volume by volume concentration C/% of gas and resistance variations amplitude are in binary composition with the presentation of pulse peak height H-shaped formula:
H=1531-9.22 × C (1).
4. gas component on-line measurement device according to claim 2, it is characterised in that: the material of the threeway is stainless
Steel.
5. gas component on-line measurement device according to claim 4, it is characterised in that: the temperature-sensitive element (34) is E
Type thermocouple.
6. gas component on-line measurement device according to claim 5, it is characterised in that: the tube body of Stainless steel tee is length
Degree is 20~40mm, and internal diameter is 3~6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573318.3A CN109668943A (en) | 2018-12-21 | 2018-12-21 | A kind of gas component on-line measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573318.3A CN109668943A (en) | 2018-12-21 | 2018-12-21 | A kind of gas component on-line measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109668943A true CN109668943A (en) | 2019-04-23 |
Family
ID=66145787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811573318.3A Pending CN109668943A (en) | 2018-12-21 | 2018-12-21 | A kind of gas component on-line measurement device |
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| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004125433A (en) * | 2002-09-30 | 2004-04-22 | Ngk Spark Plug Co Ltd | Gas detector |
| CN201149496Y (en) * | 2008-01-22 | 2008-11-12 | 南京高华科技有限公司 | Pipe type installation structure pressure temperature sensor |
| CN101750439A (en) * | 2008-12-19 | 2010-06-23 | 中国科学院大连化学物理研究所 | Hydrogen gas sensor based on thermal conduction principle |
| JP2014173896A (en) * | 2013-03-06 | 2014-09-22 | Panasonic Corp | Gas measuring device |
| CN106370316A (en) * | 2016-10-26 | 2017-02-01 | 陕西东方长安航空科技有限公司 | Platinum resistor type temperature sensor for hydraulic system and using method thereof |
| CN108387324A (en) * | 2018-03-02 | 2018-08-10 | 成都凯天电子股份有限公司 | Pipeline internal medium temperature measuring transducer |
| CN209656614U (en) * | 2018-12-21 | 2019-11-19 | 北京放射性核素实验室 | A kind of gas component on-line measurement device |
-
2018
- 2018-12-21 CN CN201811573318.3A patent/CN109668943A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004125433A (en) * | 2002-09-30 | 2004-04-22 | Ngk Spark Plug Co Ltd | Gas detector |
| CN201149496Y (en) * | 2008-01-22 | 2008-11-12 | 南京高华科技有限公司 | Pipe type installation structure pressure temperature sensor |
| CN101750439A (en) * | 2008-12-19 | 2010-06-23 | 中国科学院大连化学物理研究所 | Hydrogen gas sensor based on thermal conduction principle |
| JP2014173896A (en) * | 2013-03-06 | 2014-09-22 | Panasonic Corp | Gas measuring device |
| CN106370316A (en) * | 2016-10-26 | 2017-02-01 | 陕西东方长安航空科技有限公司 | Platinum resistor type temperature sensor for hydraulic system and using method thereof |
| CN108387324A (en) * | 2018-03-02 | 2018-08-10 | 成都凯天电子股份有限公司 | Pipeline internal medium temperature measuring transducer |
| CN209656614U (en) * | 2018-12-21 | 2019-11-19 | 北京放射性核素实验室 | A kind of gas component on-line measurement device |
Non-Patent Citations (2)
| Title |
|---|
| 于震;张正勇;: "恒温检测方法在检测混合气体中的应用", 工矿自动化, no. 07 * |
| 徐开先 等: "用热敏电阻作检测元件的甲烷浓度传感器", 《仪器制造》, no. 02 * |
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