CN108982173A - Gas sampling analysis system and its method - Google Patents
Gas sampling analysis system and its method Download PDFInfo
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- CN108982173A CN108982173A CN201810980342.2A CN201810980342A CN108982173A CN 108982173 A CN108982173 A CN 108982173A CN 201810980342 A CN201810980342 A CN 201810980342A CN 108982173 A CN108982173 A CN 108982173A
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- 238000005070 sampling Methods 0.000 title claims abstract description 50
- 238000004458 analytical method Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 204
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 19
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 10
- 239000000284 extract Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004868 gas analysis Methods 0.000 description 2
- 238000010223 real-time analysis Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N2035/00346—Heating or cooling arrangements
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of gas sampling analysis system and its methods, the system includes sample gas tank, nitrogen gas tank, piston sample storage device, vacuum pump and gas analyzer, the gas outlet of the sample gas tank and nitrogen gas tank is connected with the air inlet of piston sample storage device, and the gas outlet of the piston sample storage device is connected with the air inlet of vacuum pump, gas analyzer respectively.The piston sample storage device includes gas receiver and the piston being slidably matched inside gas receiver with it is arranged in, and one end of the gas receiver is provided with the ring flange being firmly connected with it, and the other end of the gas receiver is equipped with the push rod being fixedly connected with the piston；The support base being firmly connected with it is provided on the push rod.Gas sampling analysis system of the invention can not only sample high temperature gas source, low temperature gas source, high-pressure air source and low-pressure gas source, can also be analyzed in real time the gas componant acquired, improve the accuracy of experimental data.
Description
Technical field
The present invention relates to the technical fields of gas sampling analysis, in particular to a kind of gas sampling analysis system and its side
Method.
Background technique
Currently, gas sampling assembly is widely used in the industries such as petroleum, chemical industry, medicine and other fields, according to gas sampling
The different pressures that device is applicable in can be divided into high pressure sampling and low pressure sampling, and gas sampling of the operating pressure higher than 0.1MPa fills
It is set to high-pressure system sampling apparatus, otherwise is low-pressure system sampling apparatus.According to whether the structure of gas sampling assembly closed can
To be divided into airtightness and non-airtightness sampling apparatus, although the non-simple airtightness of airtightness gas sampling assembly structure is poor, lead
Cause loss and leakage that sample can be generated when its measurement.
Existing gas sampling system or device are largely to be designed processing, nothing for specific gas source or equipment
Method takes into account the gas sampling under low pressure and two kinds of different situations of high pressure, while also can not carry out isothermal holding to high temperature gas source, makes
The ingredient of gas source is obtained by large effect, causes measurement analysis that there can be certain deviation.In addition, existing gas sampling dress
It is excessively complicated to set structure, operation is very complicated, is not easy to practical application.
Summary of the invention
It can be to High Temperature Gas present invention aim to provide a kind of gas sampling analysis system and its method, the system
Source, low temperature gas source, high-pressure air source and low-pressure gas source can be sampled, and solve at present for high-temperature low-pressure gas source sampling difficulty
The problem of, while real-time analysis processing can be carried out to gas source component, the error generated in measurement analytic process is reduced, is improved
The accuracy of testing result.
To achieve the above object, the gas sampling analysis system designed by the present invention, including sample gas tank, nitrogen gas tank, piston
The gas outlet of sample storage device, vacuum pump and gas analyzer, the sample gas tank and nitrogen gas tank with the air inlet phase of piston sample storage device
Even, the gas outlet of the piston sample storage device is connected with the air inlet of vacuum pump, gas analyzer respectively；
The piston sample storage device includes gas receiver and is arranged in the piston being slidably matched inside gas receiver with it, the gas storage
One end of cylinder is provided with the ring flange being firmly connected with it, and the other end of the gas receiver is equipped with pushing away of being fixedly connected with the piston
Bar；The support base being firmly connected with it is provided on the push rod.
Further, it is provided with the first pipeline at the gas outlet of the sample gas tank, is arranged at the gas outlet of the nitrogen gas tank
There is the second pipeline, third pipeline, first pipeline, the second pipeline and are provided at the air inlet of the piston sample storage device
It is connected between three pipelines by the first triple valve；It is provided with the first valve on first pipeline, is arranged on second pipeline
There is the second valve, is provided with third valve on the third pipeline；
It is provided with the 4th pipeline at the air inlet of the vacuum pump, is provided with the 5th at the air inlet of the gas analyzer
Pipeline, is provided with the 6th pipeline at the gas outlet of the piston sample storage device, the 4th pipeline, the 5th pipeline, the 6th pipeline it
Between by the second triple valve be connected to；It is provided with the 4th valve on 4th pipeline, is provided with the 5th valve on the 5th pipeline
Door.
Further, the sliding block being firmly connected with it is arranged in the support base bottom, be provided with below the sliding block with
Its sliding rail being slidably matched, the support base band movable slider can be slided along sliding rail under the effect of external force.
Further, the manual lock for being limited to sliding block is provided on the sliding block.
Further, the outer ring of the piston is provided with the first sealing ring for sealing with gas receiver inner wall.
Further, seal groove, setting in the seal groove are provided on the side that the ring flange is bonded with gas receiver
There is the second sealing ring for sealing flange and gas receiver binding face.
Further, the bottom of the gas receiver is provided with the mounting base being firmly connected with it；The outer wall of the gas receiver
It is arranged with heating and thermal insulation set, the heating and thermal insulation puts on the temperature controller being provided with for carrying out temperature control to it.
Still further, being provided with the pressure gauge for monitoring its chamber pressure in the piston sample storage device.
Further, be provided on the ring flange for third piping connection first interface, be used for and the 6th
The second interface of piping connection and third interface for being connect with pressure gauge；Pass through between the ring flange and gas receiver
Bolt is fixedly connected.
The present invention also provides a kind of method for carrying out sampling analysis using above-mentioned gas sampling analysis system, including it is as follows
Step:
1) exhaust gas is emptied:
The first valve, the second valve, the 5th valve are closed, third valve, the 4th valve are opened, starts vacuum pump for gas storage
Exhaust gas evacuation in cylinder, pressure reduces in gas receiver, and driving piston compression gas receiver is until its intracavity gas volume is minimum, exhaust gas
Vacuum pump is closed after emptying；
2) inflated with nitrogen:
It opens nitrogen gas tank and the second valve and nitrogen is filled with gas receiver, pressure increases in gas receiver, drives piston and push rod
It moves backward to setting position, then by manual lock locking sliding block, closes the second valve after charging nitrogen；
3) nitrogen is taken out:
Start vacuum pump, extracts the nitrogen discharge in gas receiver, and repeat 2~5 step 2 and steps 3), last time
After taking out nitrogen, the second valve is closed；
4) sample introduction gas:
Open the first valve, start sample gas in vacuum pumping sampling gas tank successively via the first pipeline, third pipeline into
Enter gas receiver, then be discharged by gas receiver outflow via the 6th pipeline, the 4th pipeline to vacuum pump, is turned off after setting time
Sample gas is stored in gas receiver by the 4th valve and vacuum pump；
5) sampling analysis:
The 5th valve is opened, is sampled by pushing push rod that the sample pneumatic transmission being stored in gas receiver is entered gas analyzer
Analysis, i.e. completion sampling analysis.
Compared with the prior art, the advantages of the present invention are as follows:
First, gas sampling Analytical System Design of the invention have sample gas tank, nitrogen gas tank, piston sample storage device, vacuum pump and
Gas analyzer can not only sample high temperature gas source, low temperature gas source, high-pressure air source and low-pressure gas source, solve at present
Aiming at the problem that high-temperature low-pressure gas source sampling difficulty, while real-time analysis processing can be carried out to gas source component, reduce measurement
The error generated in analytic process improves the accuracy of testing result.
Second, piston sample storage device design of the invention has gas receiver, piston and push rod, wherein the outer wall of gas receiver is arranged
Have heating and thermal insulation set, heating and thermal insulation puts on the temperature controller being provided with for carrying out temperature control to it, can to high temperature gas source into
Row isothermal holding avoids the ingredient of gas source by the influence of the temperature difference, reduces deviation present in measurement analysis, improves test
Accuracy.
Third, the piston outer ring that the present invention designs is provided with the first sealing ring for sealing with gas receiver inner wall, flange
It is provided with seal groove on the side that disk is bonded with gas receiver, is provided in seal groove for sealing flange and gas receiver binding face
The second sealing ring, be conducive in this way enhance gas receiver in gas leakproofness, avoid the damage that sample can be generated when gasmetry
It becomes estranged leakage.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of gas sampling analysis system；
Fig. 2 is the side structure schematic view of ring flange in Fig. 1；
In figure, sample gas tank 1, nitrogen gas tank 2, piston sample storage device 3, gas receiver 3.1, piston 3.2, ring flange 3.3, first interface
3.31, it is second interface 3.32, third interface 3.33, push rod 3.4, support base 3.5, sliding block 3.6, sliding rail 3.7, manual lock 3.8, close
Sealing groove 3.9, mounting base 3.10, vacuum pump 4 and gas analyzer 5, the first pipeline 6.1, the second pipeline 6.2, third pipeline 6.3,
4th pipeline 6.4, the 5th pipeline 6.5, the 6th pipeline 6.6, the first valve 7.1, the second valve 7.2, third valve the 7.3, the 4th
Valve 7.4, the 5th valve 7.5, the first triple valve 8.1, the second triple valve 8.2, the first sealing ring 9.1, the second sealing ring 9.2,
Heating and thermal insulation covers 10, temperature controller 11, pressure gauge 12, bolt 13.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail:
A kind of gas sampling analysis system as shown in the figure, including sample gas tank 1, nitrogen gas tank 2, piston sample storage device 3, vacuum pump
4 and gas analyzer 5, motor exhaust can be stored in sample gas tank 1, exhaust gas reforms gas or the exhaust gas of other equipment discharge.
The gas outlet of sample gas tank 1 and nitrogen gas tank 2 is connected with the air inlet of piston sample storage device 3, the gas outlet of piston sample storage device 3 respectively with
Vacuum pump 4, the air inlet of gas analyzer 5 are connected.
In above-mentioned technical proposal, piston sample storage device 3 includes that gas receiver 3.1 and setting are slided in 3.1 inside of gas receiver with it
The piston 3.2 of cooperation, one end of gas receiver 3.1 are provided with the ring flange 3.3 being firmly connected with it, the other end of gas receiver 3.1
It is equipped with the push rod 3.4 being fixedly connected with piston 3.2；The support base 3.5 being firmly connected with it, push rod are provided on push rod 3.4
3.4 bar portion uses helicitic texture, thread size M10, and length is 200~240mm.Ring flange 3.3 and gas receiver 3.1 it
Between be fixedly connected by bolt 13, ring flange 3.3 is equipped with eight 6 through-holes of φ for installing bolt 13.
In above-mentioned technical proposal, support base 3.5 uses T font structure, and the setting of 3.5 bottom of support base is firmly connected with it
Sliding block 3.6 is bolted between support base 3.5 and sliding block 3.6.The lower section of sliding block 3.6 is provided with to be slidably matched with it
Sliding rail 3.7, support base 3.5 band movable slider 3.6 can be slided along sliding rail 3.7 under the effect of external force.It is provided with and is used on sliding block 3.6
To the manual lock 3.8 that sliding block 3.6 is limited, sliding block and sliding rail inside manual lock are resisted by rotary manual lock 3.8, is reached
To the purpose of fixed limit.
In above-mentioned technical proposal, the outer ring of piston 3.2 is provided with the first sealing ring for sealing with 3.1 inner wall of gas receiver
9.1, seal groove 3.9 is provided on the side that ring flange 3.3 is bonded with gas receiver 3.1, is provided in seal groove 3.9 for sealing
Second sealing ring 9.2 of ring flange 3.3 and 3.1 binding face of gas receiver is conducive to the leakproofness for enhancing gas in gas receiver, avoids
The loss and leakage of sample can be generated when gasmetry.The bottom of gas receiver 3.1 is provided with the mounting base being firmly connected with it
3.10；The outer wall of gas receiver 3.1 is arranged with heating and thermal insulation set 10, is provided on heating and thermal insulation set 10 for carrying out temperature control to it
Temperature controller 11, the pressure gauge 12 for monitoring its chamber pressure is additionally provided in piston sample storage device 3, and pressure gauge 12 uses number
Word formula pressure gauge.In this way, can cover 10 by heating and thermal insulation can carry out isothermal holding to high temperature gas source, the ingredient of gas source is avoided
It is influenced by the temperature difference, reduces deviation present in measurement analysis, improve the accuracy of test.
In above-mentioned technical proposal, it is provided with the first pipeline 6.1 at the gas outlet of sample gas tank 1, is set at the gas outlet of nitrogen gas tank 2
It is equipped with the second pipeline 6.2, third pipeline 6.3, the first pipeline 6.1, the second pipeline are provided at the air inlet of piston sample storage device 3
It is connected between 6.2 and third pipeline 6.3 by the first triple valve 8.1；The first valve 7.1 is provided on first pipeline 6.1, the
It is provided with the second valve 7.2 on two pipelines 6.2, is provided with third valve 7.3 on third pipeline 6.3；
It is provided with the 4th pipeline 6.4 at the air inlet of vacuum pump 4, the 5th pipe is provided at the air inlet of gas analyzer 5
Road 6.5 is provided with the 6th pipeline 6.6, the 4th pipeline 6.4, the 5th pipeline 6.5, the 6th pipeline at the gas outlet of piston sample storage device 3
It is connected between 6.6 by the second triple valve 8.2；It is provided with the 4th valve 7.4 on 4th pipeline 6.4, is arranged on the 5th pipeline 6.5
There is the 5th valve 7.5.It is provided with the first interface 3.31 for connecting with third pipeline 6.3 on ring flange 3.3, is used for and the 6th
The second interface 3.32 that pipeline 6.6 connects and the third interface 3.33 for being connect with pressure gauge 12.
A method of sampling analysis being carried out using above-mentioned gas sampling analysis system, is included the following steps:
1) exhaust gas is emptied:
The first valve 7.1, the second valve 7.2, the 5th valve 7.5 are closed, third valve 7.3, the 4th valve 7.4 are opened,
Start vacuum pump 4 for the exhaust gas evacuation in gas receiver 3.1, pressure reduces in gas receiver 3.1, and driving piston 3.2 compresses gas receiver
3.1 is minimum up to its intracavity gas volume, and vacuum pump 4 is closed after exhaust gas evacuation；
2) inflated with nitrogen:
It opens nitrogen gas tank 2 and the second valve 7.2 and nitrogen is filled with gas receiver 3.1, pressure increases in gas receiver 3.1, driving
Piston 3.2 and push rod 3.4 are moved backward to setting position, then by 3.8 locking sliding block 3.6 of manual lock, are closed after charging nitrogen
Second valve 7.2；
3) nitrogen is taken out:
Start vacuum pump 4, extracts the nitrogen discharge in gas receiver 3.1, and repeat 2~5 steps 2 and steps 3, last
After secondary pumping nitrogen, the second valve 7.2 is closed；
4) sample introduction gas:
Open the first valve 7.1, starting vacuum pump 4 extracts the sample gas in sample gas tank 1 successively via the first pipeline 6.1, the
Three pipelines 6.3 enter gas receiver 3.1, then are flowed out by gas receiver 3.1 via the 6th pipeline 6.6, the 4th pipeline 6.4 to vacuum pump 4
Discharge, the 4th valve 7.4 and vacuum pump 4 are turned off after setting time, sample gas is stored in gas receiver 3.1；
5) sampling analysis:
The 5th valve 7.5 is opened, by pushing push rod 3.4 that the sample pneumatic transmission being stored in gas receiver 3.1 is entered gas analysis
Instrument 5 carries out sampling analysis, i.e. completion sampling analysis.
The present invention can not only sample high temperature gas source, low temperature gas source, high-pressure air source and low-pressure gas source, can also be right
The gas componant acquired is analyzed in real time, applies to the measurement point of exhaust gases of internal combustion engines, atmosphere, combustible gas and chemical industry tail gas
Analysis, substantially increases the accuracy of experimental data.
The above is only a specific embodiment of the invention, it is noted that and remaining unspecified content is the prior art,
Anyone skilled in the art is in disclosed technical scope, and any changes or substitutions that can be easily thought of, all
It is covered by the protection scope of the present invention.
Claims (10)
1. a kind of gas sampling analysis system, it is characterised in that: including sample gas tank (1), nitrogen gas tank (2), piston sample storage device (3),
The gas outlet of vacuum pump (4) and gas analyzer (5), the sample gas tank (1) and nitrogen gas tank (2) with piston sample storage device (3)
Air inlet is connected, the gas outlet of the piston sample storage device (3) the air inlet phase with vacuum pump (4), gas analyzer (5) respectively
Even；
The piston sample storage device (3) includes gas receiver (3.1) and the piston that setting is slidably matched inside gas receiver (3.1) with it
(3.2), one end of the gas receiver (3.1) is provided with the ring flange (3.3) being firmly connected with it, the gas receiver (3.1)
The other end is equipped with the push rod (3.4) being fixedly connected with piston (3.2)；It is provided with and is firmly connected with it on the push rod (3.4)
Support base (3.5).
2. gas sampling analysis system according to claim 1, it is characterised in that: at the gas outlet of the sample gas tank (1)
It is provided with the first pipeline (6.1), is provided with the second pipeline (6.2) at the gas outlet of the nitrogen gas tank (2), the piston sample storage device
(3) it is provided at air inlet third pipeline (6.3), first pipeline (6.1), the second pipeline (6.2) and third pipeline
(6.3) it is connected between by the first triple valve (8.1)；It is provided with the first valve (7.1) on first pipeline (6.1), it is described
It is provided on second pipeline (6.2) the second valve (7.2), is provided with third valve (7.3) on the third pipeline (6.3)；
It is provided with the 4th pipeline (6.4) at the air inlet of the vacuum pump (4), is set at the air inlet of the gas analyzer (5)
It is equipped with the 5th pipeline (6.5), the 6th pipeline (6.6), the 4th pipeline are provided at the gas outlet of the piston sample storage device (3)
(6.4), it is connected between the 5th pipeline (6.5), the 6th pipeline (6.6) by the second triple valve (8.2)；4th pipeline
(6.4) it is provided with the 4th valve (7.4) on, is provided with the 5th valve (7.5) on the 5th pipeline (6.5).
3. gas sampling analysis system according to claim 2, it is characterised in that: support base (3.5) the bottom setting
The sliding block (3.6) being firmly connected with it is provided with the sliding rail (3.7) being slidably matched with it below the sliding block (3.6), described
Support base (3.5) band movable slider (3.6) can be slided along sliding rail (3.7) under the effect of external force.
4. gas sampling analysis system according to claim 3, it is characterised in that: be arranged on the sliding block (3.6) useful
In the manual lock (3.8) limited to sliding block (3.6).
5. gas sampling analysis system according to claim 4, it is characterised in that: the outer ring of the piston (3.2) is arranged
There is the first sealing ring (9.1) for sealing with gas receiver (3.1) inner wall.
6. gas sampling analysis system according to claim 5, it is characterised in that: the ring flange (3.3) and gas receiver
(3.1) it is provided with seal groove (3.9) on the side being bonded, is provided in the seal groove (3.9) for sealing flange (3.3)
With second sealing ring (9.2) of gas receiver (3.1) binding face.
7. gas sampling analysis system according to claims 2 to 6, it is characterised in that: the bottom of the gas receiver (3.1)
It is provided with the mounting base (3.10) being firmly connected with it；The outer wall of the gas receiver (3.1) is arranged with heating and thermal insulation set (10), institute
State the temperature controller (11) being provided on heating and thermal insulation set (10) for carrying out temperature control to it.
8. gas sampling analysis system according to claim 7, it is characterised in that: be arranged on the piston sample storage device (3)
There is the pressure gauge (12) for monitoring its chamber pressure.
9. gas sampling analysis system according to claim 8, it is characterised in that: be provided on the ring flange (3.3)
First interface (3.31) for being connect with third pipeline (6.3), the second interface for being connect with the 6th pipeline (6.6)
(3.32) and for the third interface (3.33) that is connect with pressure gauge (12)；The ring flange (3.3) and gas receiver (3.1)
Between be fixedly connected by bolt (13).
10. a kind of method for carrying out sampling analysis using gas sampling analysis system described in claim 1, it is characterised in that:
Include the following steps:
1) exhaust gas is emptied:
The first valve (7.1), the second valve (7.2), the 5th valve (7.5) are closed, third valve (7.3), the 4th valve are opened
(7.4), starting vacuum pump (4) reduces the exhaust gas evacuation in gas receiver (3.1), the interior pressure of gas receiver (3.1), drives piston
(3.2) compression gas receiver (3.1) closes vacuum pump (4) after its intracavity gas volume minimum, exhaust gas evacuation；
2) inflated with nitrogen:
It opens nitrogen gas tank (2) and nitrogen is filled with gas receiver (3.1) by the second valve (7.2), the interior pressure of gas receiver (3.1) increases,
It drives piston (3.2) and push rod (3.4) reverse movement to setting position, closes the second valve (7.2) after charging nitrogen；
3) nitrogen is taken out:
Start vacuum pump (4), extracts the nitrogen discharge in gas receiver (3.1), and repeat 2~5 step 2 and steps 3), finally
After primary pumping nitrogen, close the second valve (7.2)；
4) sample introduction gas:
It opens the first valve (7.1), starting vacuum pump (4) extracts the sample gas in sample gas tank (1) successively via the first pipeline
(6.1), third pipeline (6.3) enters gas receiver (3.1), then is flowed out by gas receiver (3.1) via the 6th pipeline (6.6), the 4th
Pipeline (6.4) to vacuum pump (4) are discharged, and the 4th valve (7.4) and vacuum pump (4) are turned off after setting time, by sample gas
It is stored in gas receiver (3.1)；
5) sampling analysis:
The 5th valve (7.5) is opened, by pushing push rod (3.4) that the sample pneumatic transmission being stored in gas receiver (3.1) is entered gas point
Analyzer (5) carries out sampling analysis, i.e. completion sampling analysis.
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| CN201810980342.2A CN108982173A (en) | 2018-08-27 | 2018-08-27 | Gas sampling analysis system and its method |
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| CN201810980342.2A CN108982173A (en) | 2018-08-27 | 2018-08-27 | Gas sampling analysis system and its method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374367A (en) * | 2018-12-21 | 2019-02-22 | 中国人民解放军空军工程大学 | Multichannel large capacity high-temperature vacuum sampler |
| WO2020224004A1 (en) * | 2019-05-05 | 2020-11-12 | 东北大学 | Serpentine mass spectrometer continuous variable-pressure sampling device and method |
| CN112191127A (en) * | 2020-10-23 | 2021-01-08 | 华能安源发电有限责任公司 | SOx/NOx control CEMS multichannel sample gas mixing arrangement |
| CN113358422A (en) * | 2021-07-14 | 2021-09-07 | 马钢奥瑟亚化工有限公司 | Method for producing and preparing coal tar pitch |
| CN114034524A (en) * | 2021-10-21 | 2022-02-11 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Sample gas sampling device and gas-tight seal component internal atmosphere analysis equipment |
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| CN114034524A (en) * | 2021-10-21 | 2022-02-11 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Sample gas sampling device and gas-tight seal component internal atmosphere analysis equipment |
| CN114034524B (en) * | 2021-10-21 | 2023-09-01 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Sample gas sampling device and gas-tight seal component internal atmosphere analysis equipment |
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