CN114324554A - Portable gas analyzer - Google Patents
Portable gas analyzer Download PDFInfo
- Publication number
- CN114324554A CN114324554A CN202111631315.2A CN202111631315A CN114324554A CN 114324554 A CN114324554 A CN 114324554A CN 202111631315 A CN202111631315 A CN 202111631315A CN 114324554 A CN114324554 A CN 114324554A
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- CN
- China
- Prior art keywords
- communicated
- buffer tube
- channel
- container
- fid detector
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- 238000005192 partition Methods 0.000 claims abstract description 13
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000012629 purifying agent Substances 0.000 claims description 7
- 238000005245 sintering Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 31
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 11
- 239000001257 hydrogen Substances 0.000 description 11
- 229910052739 hydrogen Inorganic materials 0.000 description 11
- 239000000956 alloy Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 239000000567 combustion gas Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The present invention provides a portable gas analyzer comprising a pressure control module and a FID detector, the FID detector comprising a housing and a combustion chamber, the housing having an exhaust gas outlet; further comprising: the first partition and the second partition are sequentially arranged in the shell to partition the interior of the shell into a first part, a second part and a third part which are sequentially distributed, and the combustion chamber is positioned in the third part; an end cap secured to an end of the housing for closing the first portion; the end cover is provided with a first through hole which penetrates through the end cover; the first buffer tube is arranged in the first part, one end of the first buffer tube is communicated with the first through hole, and the other end of the first buffer tube is communicated with a first channel through which the first isolating piece penetrates; and a second buffer tube is arranged in the second part, one end of the second buffer tube is communicated with the first channel, the other end of the second buffer tube is communicated with a second channel penetrating through the second partition piece, and a nozzle is arranged in the combustion chamber and communicated with the second channel. The invention has the advantages of stable work and the like.
Description
Technical Field
The invention relates to gas analysis, in particular to a portable gas analyzer.
Background
In a portable volatile organic gas analyzer, the flow rate is generally controlled by a hydrogen steel cylinder in combination with a physical switch valve, a pressure reducing valve and the like in the conventional gas circuit control.
Hydrogen storage alloys and EPC are now used to control flow for accuracy, safety and motorization. Hydrogen enters the FID detector from the hydrogen storage alloy through an EPC (outlet connected with a pressure sensor) to be used as combustion gas, combustion-supporting gas/sample gas is pumped in a pumping mode, and collected gas is introduced into the FID detector, so that VOCs are detected. However, when the technical scheme is applied to a portable volatile organic gas analyzer, problems exist;
1. in actual use, the instrument can shake, so that the hydrogen EPC is unstable, and the instrument is flameout.
At present, portable analysis equipment has two forms in use, one is carried by a backpack, and the other is handheld. In practical application, due to the fact that working conditions of various detection point positions are complex, the instrument cannot be shaken or vibrated in the using process, and due to the fact that a valve block controlled by electromagnetic force in the EPC and the valve block controlled by the electromagnetic force in the EPC are subjected to inertia interaction caused by shaking, an opening of the EPC cannot be stable, the fluctuation of hydrogen flow entering the FID is large, and the FID is flamed out.
2. The impure hydrogen storage alloy gas results in a larger ignition response of the instrument.
At present, the small hydrogen storage alloy used by a handheld volatile organism analyzer has the problems of impure gas and high response, and is usually filled in a gas cylinder or the gas cylinder is placed for a long time. In practical applications, the accuracy of the detected value cannot be guaranteed, especially in the detection of low concentration, such as factory non-tissue detection.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a portable gas analyzer.
The purpose of the invention is realized by the following technical scheme:
a portable gas analyzer including a pressure control module and a FID detector, the FID detector including a housing and a combustion chamber, the combustion chamber disposed within the housing, the housing having an exhaust gas outlet; the FID detector further includes:
the first isolating piece and the second isolating piece are sequentially arranged in the shell and isolate the interior of the shell into a first part, a second part and a third part which are sequentially distributed, and the combustion chamber is positioned in the third part;
an end cap secured to an end of the housing for closing the first portion; the end cover is provided with a first through hole which penetrates through the end cover, and the pressure control module is connected with the first through hole;
the first buffer tube is arranged in the first part, one end of the first buffer tube is communicated with the first through hole, and the other end of the first buffer tube is communicated with a first channel through which the first isolating piece penetrates;
and the second buffer tube is arranged in the second part, one end of the second buffer tube is communicated with the first channel, the other end of the second buffer tube is communicated with a second channel penetrating through the second partition piece, and the nozzle is arranged in the combustion chamber and communicated with the second channel.
Compared with the prior art, the invention has the beneficial effects that:
1. the stability is good;
when the portable equipment is applied on site, the baseline value is obviously reduced after ignition is successful, the stability of the instrument is relatively good, and the instrument is shaken or vibrated, so that the instrument normally operates without flameout although the valve block in the EPC moves up and down, and normal detection and analysis can be ensured;
2. has an explosion-proof function;
the use of a plurality of isolation components and sintered filter elements makes the FID detector have explosion-proof function.
Drawings
The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only for illustrating the technical solutions of the present invention and are not intended to limit the scope of the present invention. In the figure:
FIG. 1 is a schematic diagram of the structure of a FID detector according to an embodiment of the present invention.
Detailed Description
Fig. 1 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. Some conventional aspects have been simplified or omitted for the purpose of explaining the technical solution of the present invention. Those skilled in the art will appreciate that variations or substitutions from these embodiments will be within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Thus, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.
Example 1:
the portable gas analyzer of the embodiment of the present invention includes:
the pressure control module is used for sending combustion gas to the FID detector after the combustion gas passes through the pressure control module;
an FID detector, as shown in FIG. 1, comprising;
a housing 11, said housing 11 having an exhaust outlet;
a first partition 21 and a second partition 22, wherein the first partition 21 and the second partition 22 are sequentially arranged in the housing 11 to partition the interior of the housing 11 into a first part 12, a second part 13 and a third part 14 which are sequentially distributed, and the combustion chamber is positioned in the third part 14;
an end cap fixed to an end of the housing 11 for closing the first portion 12; the end cover is provided with a first through hole which penetrates through the end cover, and the pressure control module is connected with the first through hole;
a first buffer tube 31, said first buffer tube 31 being arranged within said first section 12, one end communicating with said first through hole and the other end communicating with a first channel through which first spacer 21 passes;
a second buffer tube 32, said second buffer tube 32 being disposed within said second section 13 and having one end communicating with said first passage and the other end communicating with a second passage extending through second partition 22, a nozzle being disposed within said combustion chamber and communicating with said second passage; the combustion gas passes sequentially through the pressure control module, the first through-hole, the first buffer tube 31, the first channel, the second buffer tube 32, the second channel, and the nozzle.
In order to filter impurities and realize an explosion-proof function, further, the FID detector further comprises:
a first reservoir having an inlet in communication with the second buffer tube 32 and an outlet in communication with the second channel;
the purifying device comprises a purifying agent 51 and a first sintering filter element 61, wherein the purifying agent 51 and the first sintering filter element 61 are arranged in the first container, and gas entering the first container sequentially passes through the purifying agent 51 and the first sintering filter element 61.
In order to maintain the stability of the sample gas and the combustion-supporting gas, further, the FID detector further includes:
a third buffer tube 33, said third buffer tube 33 being arranged within said first section 12, one end communicating with the second through hole in the end cap and the other end communicating with a third passage through which the first spacer 21 passes;
a fourth buffer tube 23, said fourth buffer tube 23 being arranged within said second section 12, one end communicating with said third channel and the other end communicating with a fourth channel running through the second spacer 22.
In order to remove water and realize explosion-proof function, further, the FID detector further comprises:
a second reservoir having an inlet communicating with the fourth buffer tube 34 and an outlet communicating with the fourth channel; the outlet of the second container is communicated with the second channel;
the water removal agent 52 and the second sintered filter element 62 are arranged in the second container, and the gas entering the first container sequentially passes through the water removal agent 52 and the second sintered filter element 62.
In order to realize the explosion-proof function, further, the FID detector further includes:
a third sintered filter element 63, said third sintered filter element 63 being arranged at said exhaust gas outlet.
Example 2:
an application example of the portable gas analyzer according to embodiment 1 of the present invention.
In this application, as shown in FIG. 1, in the FID detector, the first container is disposed in the second section 13, with the inlet communicating with the second buffer tube 32 and the outlet communicating with the second channel on the second spacer 22 through the first conduit 41; the gas entering the first container passes through a purifying agent 51 (for purifying hydrogen) and a first sintering filter element 61 in sequence;
a third buffer tube 33 is arranged in the first section 12, one end of which communicates with the second through hole in the end cap and the other end of which communicates with a third channel through which the first spacer 21 passes; a fourth buffer tube 34 is disposed within the second section 13, one end communicating with the third passage and the other end communicating with the inlet of the second container; the outlet of the second container is communicated with a second pipeline 42, and the second pipeline 42 is communicated with a fourth channel on the second partition 22; the gas entering the second container passes through the water removal agent (such as allochroic silica gel) 52 and the second sintered filter element 62 in sequence; the first pipeline 41 is communicated with the second pipeline 42;
a third sintered filter element 63 is provided at the exhaust gas outlet.
The FID detector of this embodiment operates as follows:
hydrogen stored in the hydrogen storage alloy is released and then mixed with combustion-supporting gas from the second pipeline 42 through the pressure control module, the first through hole, the first buffer pipe 31, the first channel, the second buffer pipe 32, the purifying agent 51, the first sintering filter element 61 and the first pipeline 41 in sequence, and the mixed gas enters the second channel and the nozzle;
the mixed gas of the sample gas and the combustion-supporting gas sequentially passes through the second through hole, the third buffer tube 33, the third channel, the fourth buffer tube 34, the water removing agent 52, the second sintered filter element 62 and the second pipeline 42 and enters the combustion chamber;
the exhaust gas in the combustion chamber is discharged through the third sintered filter element 63.
Claims (6)
1. A portable gas analyzer including a pressure control module and a FID detector, the FID detector including a housing and a combustion chamber, the combustion chamber disposed within the housing, the housing having an exhaust gas outlet; characterized in that the FID detector further comprises:
the first isolating piece and the second isolating piece are sequentially arranged in the shell and isolate the interior of the shell into a first part, a second part and a third part which are sequentially distributed, and the combustion chamber is positioned in the third part;
an end cap secured to an end of the housing for closing the first portion; the end cover is provided with a first through hole which penetrates through the end cover, and the pressure control module is connected with the first through hole;
the first buffer tube is arranged in the first part, one end of the first buffer tube is communicated with the first through hole, and the other end of the first buffer tube is communicated with a first channel through which the first isolating piece penetrates;
and the second buffer tube is arranged in the second part, one end of the second buffer tube is communicated with the first channel, the other end of the second buffer tube is communicated with a second channel penetrating through the second partition piece, and the nozzle is arranged in the combustion chamber and communicated with the second channel.
2. The portable gas analyzer of claim 1, wherein the FID detector further comprises:
a first container, an inlet of the first container is communicated with the second buffer tube, and an outlet of the first container is communicated with the second channel;
the purifying agent and the first sintering filter element are arranged in the first container, and gas entering the first container sequentially passes through the purifying agent and the first sintering filter element.
3. The portable gas analyzer of claim 1, wherein the FID detector further comprises:
a third buffer tube, which is arranged in the first part, and one end of which is communicated with the second through hole on the end cover and the other end of which is communicated with a third channel through which the first isolating piece penetrates;
and the fourth buffer tube is arranged in the second part, one end of the fourth buffer tube is communicated with the third channel, and the other end of the fourth buffer tube is communicated with a fourth channel penetrating through the second isolating piece.
4. The portable gas analyzer of claim 3, wherein the FID detector further comprises:
a second container, an inlet of the second container is communicated with the fourth buffer tube, and an outlet of the second container is communicated with the fourth channel;
the water removing agent and the second sintered filter element are arranged in the second container, and gas entering the first container sequentially passes through the water removing agent and the second sintered filter element.
5. The portable gas analyzer of claim 4, wherein the outlet of the second container communicates with the second passage.
6. The portable gas analyzer of claim 1, wherein the FID detector further comprises:
a third sintered filter element disposed at the exhaust gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111631315.2A CN114324554B (en) | 2021-12-29 | 2021-12-29 | Portable gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111631315.2A CN114324554B (en) | 2021-12-29 | 2021-12-29 | Portable gas analyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114324554A true CN114324554A (en) | 2022-04-12 |
| CN114324554B CN114324554B (en) | 2023-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111631315.2A Active CN114324554B (en) | 2021-12-29 | 2021-12-29 | Portable gas analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114324554B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117054511A (en) * | 2023-10-13 | 2023-11-14 | 杭州盈创环境科技有限公司 | Non-methane total hydrocarbon detection device and method based on double detectors |
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|---|---|---|---|---|
| CN101106200A (en) * | 2006-07-11 | 2008-01-16 | 株式会社东芝 | Hydrogen generation device, a fuel cell system, and an analysis system |
| JP2010019860A (en) * | 2005-05-13 | 2010-01-28 | Horiba Ltd | Transportable measuring apparatus utilizing hydrogen flame and method for operating same |
| US20100171505A1 (en) * | 2008-11-26 | 2010-07-08 | James Norgaard | Supplemental air system for a portable, instrinsically safe, flame ionization detector (FID) device |
| CN107389777A (en) * | 2017-07-31 | 2017-11-24 | 成都凯圣捷科技有限公司 | Explosion-proof hydrogen flames F exiting ID detectors |
| CN107436322A (en) * | 2016-05-17 | 2017-12-05 | 株式会社堀场制作所 | Gas analyzing apparatus |
| CN112285191A (en) * | 2020-09-20 | 2021-01-29 | 杭州谱育科技发展有限公司 | Apparatus and method for detecting gas |
| CN212514441U (en) * | 2020-02-10 | 2021-02-09 | 聚光科技(杭州)股份有限公司 | On-line gas chromatograph |
-
2021
- 2021-12-29 CN CN202111631315.2A patent/CN114324554B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010019860A (en) * | 2005-05-13 | 2010-01-28 | Horiba Ltd | Transportable measuring apparatus utilizing hydrogen flame and method for operating same |
| CN101106200A (en) * | 2006-07-11 | 2008-01-16 | 株式会社东芝 | Hydrogen generation device, a fuel cell system, and an analysis system |
| US20100171505A1 (en) * | 2008-11-26 | 2010-07-08 | James Norgaard | Supplemental air system for a portable, instrinsically safe, flame ionization detector (FID) device |
| CN107436322A (en) * | 2016-05-17 | 2017-12-05 | 株式会社堀场制作所 | Gas analyzing apparatus |
| CN107389777A (en) * | 2017-07-31 | 2017-11-24 | 成都凯圣捷科技有限公司 | Explosion-proof hydrogen flames F exiting ID detectors |
| CN212514441U (en) * | 2020-02-10 | 2021-02-09 | 聚光科技(杭州)股份有限公司 | On-line gas chromatograph |
| CN112285191A (en) * | 2020-09-20 | 2021-01-29 | 杭州谱育科技发展有限公司 | Apparatus and method for detecting gas |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117054511A (en) * | 2023-10-13 | 2023-11-14 | 杭州盈创环境科技有限公司 | Non-methane total hydrocarbon detection device and method based on double detectors |
| CN117054511B (en) * | 2023-10-13 | 2024-01-12 | 杭州盈创环境科技有限公司 | Non-methane total hydrocarbon detection device and method based on double detectors |
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| Publication number | Publication date |
|---|---|
| CN114324554B (en) | 2023-12-08 |
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