CN113074994A - Portable tail gas sampling device and using method thereof - Google Patents
Portable tail gas sampling device and using method thereof Download PDFInfo
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- CN113074994A CN113074994A CN202110285794.0A CN202110285794A CN113074994A CN 113074994 A CN113074994 A CN 113074994A CN 202110285794 A CN202110285794 A CN 202110285794A CN 113074994 A CN113074994 A CN 113074994A
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- gas
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- storage box
- fan
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- 238000005070 sampling Methods 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims description 11
- 238000004321 preservation Methods 0.000 claims abstract description 16
- 239000000523 sample Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 86
- 238000005457 optimization Methods 0.000 description 6
- 238000003915 air pollution Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009323 psychological health Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
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
Abstract
The invention discloses a portable tail gas sampling device which comprises a multi-cavity shell, a sampled gas storage box, a heat preservation system, electric gas valves for controlling different cavities of the tail gas storage box to be opened, a fan for gas sampling and a power supply. When tail gas sampling is carried out, firstly, a tail gas sampling probe is inserted into a part to be sampled, then, a valve corresponding to a cavity on a tail gas storage box is opened, then, a fan is started, the fan is started for 5-6 minutes during sampling, discharged gas is collected, and meanwhile, original gas in the cavity is exhausted; the fan is started and the heat preservation system is started, a constant-temperature storage environment is provided by a circle of micro-heating system at the periphery of the multi-cavity sampling gas storage box, and the collected tail gas is prevented from condensing after the temperature is reduced. The tail gas sampling device designed by the invention has the advantages of reasonable design structure, small volume, convenience in carrying, convenience and high efficiency.
Description
Technical Field
The invention belongs to the field of sampling equipment, and particularly relates to a portable tail gas sampling device and a using method thereof.
Background
With the continuous development of economic construction in China, the number of motor vehicles and non-road mobile machines is continuously increased, so that serious air pollution is caused, and the physical and psychological health of people is influenced. Therefore, the national emission standard of motor vehicles and non-road mobile machinery is continuously improved, and the national emission standard is particularly important for daily supervision and detection of exhaust emission.
The traditional tail gas detection instrument is large in size and heavy in mass, is generally stored in a fixed test place, and is inconvenient to carry and go out for detection.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention provides a portable tail gas sampling device and a using method thereof.
The technical scheme is as follows: a portable tail gas sampling device comprises a power supply, an air inlet connecting pipe, an air inlet valve, a multi-cavity sampled gas storage box, a heat preservation system, an air outlet valve, an air outlet connecting pipe, a fan connecting pipe, an axial flow fan, a shell and a sampled gas probe;
the multi-cavity sampling gas storage box is arranged in the heat insulation system; the left end and the right end of the multi-cavity sampling gas storage box are respectively connected with a gas inlet valve and a gas outlet valve, the gas inlet valve is fixedly connected with a gas inlet connecting pipe, the sampling gas probe is fixedly arranged at the front end of the gas inlet connecting pipe, the gas outlet valve is fixedly connected with a gas outlet connecting pipe, the gas outlet connecting pipe is connected to an axial flow fan through a fan connecting pipe, and the axial flow fan is used for sampling gas; the bottom of the multi-cavity sampling gas storage box is fixedly provided with a power supply, and the power supply supplies power for the fan and the heat preservation; the portable tail gas sampling device is integrally arranged in the shell.
As an optimization: the multi-cavity sampling gas storage box comprises four cavities, corresponds to four working condition requirements of tail gas detection, and meets the requirement of gas detection.
As an optimization: the multi-cavity sampling gas storage box is characterized in that different cavities are provided with electric gas valves for opening and closing, the valves at each end can not be opened simultaneously through program control, and after the valve at one end is opened, the valve at the other end corresponding to the cavity can only be opened.
As an optimization: the heat preservation system can provide a constant temperature environment at the temperature according to the temperature measured during collection and collection, the error range of the built-in heating element is-2 ℃, the used material is high-temperature-resistant glass fiber, and the whole multi-cavity sampling gas storage box is wrapped by the glass fiber.
As an optimization: the fan is an axial flow fan, the wind direction faces downwards, and the gas outlet is provided with a protective net to prevent foreign matters from entering.
As an optimization: the power supply is a lithium battery and can carry a standby battery to directly replace, and each battery can continue to run for 3 hours.
The use method of the portable tail gas sampling device comprises the following steps: when tail gas sampling is carried out, firstly, a sampling gas probe is inserted into a part to be sampled, a connecting pipe of sampling gas is connected with a gas inlet of a storage box, then, a valve of a corresponding cavity on a multi-cavity sampling gas storage box is opened, a fan for extracting gas is started, the fan is started for 5-6 minutes during sampling, discharged gas is collected, and meanwhile, original gas in the cavity is completely discharged; the fan is started and the heat preservation system is started at the same time, a constant-temperature storage environment is provided by a circle of micro-heating system at the periphery of the multi-cavity sampling gas storage box, so that the collected tail gas is prevented from being condensed after the temperature is reduced.
As an optimization: when gas is sampled, each sampling cavity needs to be collected for 5-10 minutes, the original gas in the cavity is discharged, and the collected gas is discharged.
Has the advantages that: according to the portable tail gas sampling device and the using method thereof, the portable collection of the tail gas of the emission equipment is realized, the rapid detection of the emission equipment is facilitated, and the portable tail gas sampling device has important significance for improving the air quality.
Drawings
FIG. 1 is a schematic overall structure of the present invention;
fig. 2 is a schematic diagram of the structure of the subsections of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Examples
As shown in fig. 1-2, a portable tail gas sampling device comprises a power supply 1, an air inlet connecting pipe 2, an air inlet valve 3, a multi-cavity sampled gas storage tank 4, a heat preservation system 5, an air outlet valve 6, an air outlet connecting pipe 7, a fan connecting pipe 8, an axial flow fan 9, a shell 10 and a sampled gas probe 11.
The multi-cavity sampling gas storage tank 4 is arranged in the heat preservation system 5; the left end and the right end of the multi-cavity sampling gas storage box 4 are respectively connected with a gas inlet valve 3 and a gas outlet valve 6, the gas inlet valve 3 is fixedly connected with a gas inlet connecting pipe 2, the sampling gas probe 11 is fixedly arranged at the front end of the gas inlet connecting pipe 2, the gas outlet valve 6 is fixedly connected with a gas outlet connecting pipe 7, the gas outlet connecting pipe 7 is connected to an axial flow fan 9 through a fan connecting pipe 8, and the axial flow fan 9 is used for sampling gas; the bottom of the multi-cavity sampling gas storage box 4 is fixedly provided with a power supply 1, and the power supply 1 supplies power for a fan and heat preservation; the portable tail gas sampling device is integrally arranged in the shell 10.
The multi-cavity sampling gas storage box 4 comprises four cavities, corresponds to four working condition requirements of tail gas detection, and meets the requirement of gas detection.
The multi-cavity sampling gas storage box 4 is internally provided with electric gas valves for opening and closing different cavities, the valves at each end can not be opened simultaneously through program control, and after the valve at one end is opened, the valve at the other end corresponding to the cavity can only be opened.
The heat preservation system 5 can provide a constant temperature environment at the temperature according to the temperature measured during collection and collection, the error range of the built-in heating element is-2 ℃, the used material is high-temperature-resistant glass fiber, and the whole multi-cavity sampling gas storage tank 4 is wrapped by the glass fiber.
The fan 9 is an axial flow fan, the wind direction is downward, waste gas is prevented from blowing to a human body when gas is collected, and a protective net is arranged at a gas outlet to prevent foreign matters from entering.
The power supply 1 is a lithium battery and can carry a standby battery to directly replace the lithium battery, and each battery can last for 3 hours.
The use method of the portable tail gas sampling device comprises the following steps: when tail gas sampling is carried out, firstly, a sampling gas probe 11 is inserted into a part to be sampled, a connecting pipe of sampling gas is connected with a gas inlet of a storage box, then, a valve of a corresponding cavity on a multi-cavity sampling gas storage box is opened, a fan for extracting gas is started, the fan is started for 5-6 minutes during sampling, discharged gas is collected, and original gas in the cavity is exhausted; the fan is started and the heat preservation system is started at the same time, a constant-temperature storage environment is provided by a circle of micro-heating system at the periphery of the multi-cavity sampling gas storage box, so that the collected tail gas is prevented from being condensed after the temperature is reduced.
When gas is sampled, each sampling cavity needs to be collected for 5-6 minutes, the original gas in the cavity is discharged, and the collected gas is discharged.
The invention realizes the portable collection of the tail gas of the emission equipment by researching the portable tail gas sampling device and the using method thereof, has the advantage of quick detection of the emission equipment, and has important significance for improving the air quality.
Claims (8)
1. The utility model provides a portable tail gas sampling device which characterized in that: the device comprises a power supply (1), an air inlet connecting pipe (2), an air inlet valve (3), a multi-cavity sampling gas storage box (4), a heat preservation system (5), an air outlet valve (6), an air outlet connecting pipe (7), a fan connecting pipe (8), an axial flow fan (9), a shell (10) and a sampling gas probe (11);
the multi-cavity sampling gas storage box (4) is arranged in the heat preservation system (5); the multi-cavity sampling gas storage box (4) is characterized in that the left end and the right end of the multi-cavity sampling gas storage box (4) are respectively connected with a gas inlet valve (3) and a gas outlet valve (6), the gas inlet valve (3) is fixedly connected with a gas inlet connecting pipe (2), a sampling gas probe (11) is fixedly arranged at the front end of the gas inlet connecting pipe (2), the gas outlet valve (6) is fixedly connected with a gas outlet connecting pipe (7), the gas outlet connecting pipe (7) is connected to an axial flow fan (9) through a fan connecting pipe (8), and the axial flow fan (9) is used for sampling gas; the bottom of the multi-cavity sampling gas storage box (4) is fixedly provided with a power supply (1), and the power supply (1) supplies power for the fan and the heat preservation; the portable tail gas sampling device is integrally arranged in the shell (10).
2. The portable exhaust sampling device of claim 1, wherein: the multi-cavity sampling gas storage box (4) comprises four cavities, corresponds to four working condition requirements of tail gas detection, and meets the requirement of gas detection.
3. The portable exhaust sampling device of claim 2, wherein: the multi-cavity sampling gas storage box (4) is internally provided with electric gas valves for opening and closing different cavities, the valves at each end can not be opened simultaneously through program control, and after the valve at one end is opened, the valve at the other end corresponding to the cavity can only be opened.
4. The portable exhaust sampling device of claim 1, wherein: the heat preservation system (5) can provide a constant temperature environment at the temperature according to the temperature measured during collection and collection, the error range of the built-in heating element is-2 ℃, the used material is high-temperature-resistant glass fiber, and the whole multi-cavity sampling gas storage box (4) is wrapped by the glass fiber.
5. The portable exhaust sampling device of claim 1, wherein: the fan (9) is an axial flow fan, the wind direction is downward, and the gas outlet is provided with a protective screen to prevent foreign matters from entering.
6. The portable exhaust sampling device of claim 1, wherein: the power supply (1) is a lithium battery and can carry a standby battery to directly replace, and each battery can continue to run for 3 hours.
7. A method of using a portable exhaust sampling device according to claims 1-6, wherein: wherein, the method comprises the following steps: when tail gas sampling is carried out, firstly, a sampling gas probe is inserted into a part to be sampled, a connecting pipe of sampling gas is connected with a gas inlet of a storage box, then, a valve of a corresponding cavity on a multi-cavity sampling gas storage box is opened, a fan for extracting gas is started, the fan is started for 5-6 minutes during sampling, discharged gas is collected, and meanwhile, original gas in the cavity is completely discharged; the fan is started and the heat preservation system is started at the same time, a constant-temperature storage environment is provided by a circle of micro-heating system at the periphery of the multi-cavity sampling gas storage box, so that the collected tail gas is prevented from being condensed after the temperature is reduced.
8. The use method of the portable tail gas sampling device according to claim 7, characterized in that each sampling cavity needs to be collected for 5-6 minutes when gas is sampled, so as to ensure that the original gas in the cavity is discharged, and the collected gas is exhaust gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110285794.0A CN113074994A (en) | 2021-03-17 | 2021-03-17 | Portable tail gas sampling device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110285794.0A CN113074994A (en) | 2021-03-17 | 2021-03-17 | Portable tail gas sampling device and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113074994A true CN113074994A (en) | 2021-07-06 |
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| CN202110285794.0A Pending CN113074994A (en) | 2021-03-17 | 2021-03-17 | Portable tail gas sampling device and using method thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202421160U (en) * | 2011-12-08 | 2012-09-05 | 中国电力科学研究院 | Environment-friendly real-time detector for analyzing ingredients of sulfur hexafluoride gas |
| CN103018080A (en) * | 2012-11-23 | 2013-04-03 | 清华大学 | Along-way multipoint sampling analysis system for automotive exhaust emission |
| CN103969089A (en) * | 2014-04-04 | 2014-08-06 | 深圳职业技术学院 | Automobile exhaust sampling device and sampling method thereof |
| CN205910040U (en) * | 2016-07-06 | 2017-01-25 | 北京市环境保护监测中心 | Vehicular gas sampling house steward and environment monitoring vehicle |
| CN206710161U (en) * | 2017-05-22 | 2017-12-05 | 哈尔滨绿柳环保科技发展有限公司 | A kind of gas sample harvester |
| CN108106887A (en) * | 2017-12-28 | 2018-06-01 | 清华大学 | Motor-vehicle tail-gas particulate matter and volatile organic contaminant divided working status sampling system |
| CN208187808U (en) * | 2018-05-15 | 2018-12-04 | 广州赛宝计量检测中心服务有限公司 | A kind of gas sampling bag |
| CN209182112U (en) * | 2018-11-27 | 2019-07-30 | 郑州大学 | A kind of vehicle exhaust VOC for WLTC test loop automatic acquisition device stage by stage |
| CN112415144A (en) * | 2020-11-25 | 2021-02-26 | 四川化安科技发展有限公司 | Multi-point multi-element gas on-line detection device |
-
2021
- 2021-03-17 CN CN202110285794.0A patent/CN113074994A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202421160U (en) * | 2011-12-08 | 2012-09-05 | 中国电力科学研究院 | Environment-friendly real-time detector for analyzing ingredients of sulfur hexafluoride gas |
| CN103018080A (en) * | 2012-11-23 | 2013-04-03 | 清华大学 | Along-way multipoint sampling analysis system for automotive exhaust emission |
| CN103969089A (en) * | 2014-04-04 | 2014-08-06 | 深圳职业技术学院 | Automobile exhaust sampling device and sampling method thereof |
| CN205910040U (en) * | 2016-07-06 | 2017-01-25 | 北京市环境保护监测中心 | Vehicular gas sampling house steward and environment monitoring vehicle |
| CN206710161U (en) * | 2017-05-22 | 2017-12-05 | 哈尔滨绿柳环保科技发展有限公司 | A kind of gas sample harvester |
| CN108106887A (en) * | 2017-12-28 | 2018-06-01 | 清华大学 | Motor-vehicle tail-gas particulate matter and volatile organic contaminant divided working status sampling system |
| CN208187808U (en) * | 2018-05-15 | 2018-12-04 | 广州赛宝计量检测中心服务有限公司 | A kind of gas sampling bag |
| CN209182112U (en) * | 2018-11-27 | 2019-07-30 | 郑州大学 | A kind of vehicle exhaust VOC for WLTC test loop automatic acquisition device stage by stage |
| CN112415144A (en) * | 2020-11-25 | 2021-02-26 | 四川化安科技发展有限公司 | Multi-point multi-element gas on-line detection device |
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Application publication date: 20210706 |
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