CN115144493A - Gas circuit structure of on-line monitoring analyzer - Google Patents
Gas circuit structure of on-line monitoring analyzer Download PDFInfo
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- CN115144493A CN115144493A CN202210737174.0A CN202210737174A CN115144493A CN 115144493 A CN115144493 A CN 115144493A CN 202210737174 A CN202210737174 A CN 202210737174A CN 115144493 A CN115144493 A CN 115144493A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/20—Injection using a sampling valve
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/20—Injection using a sampling valve
- G01N2030/201—Injection using a sampling valve multiport valves, i.e. having more than two ports
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- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an air path structure of an online monitoring analyzer, and relates to the field of online monitoring analyzers. The gas circuit structure of the online monitoring analyzer comprises a first carrier gas inlet and an analyzer, wherein a second carrier gas inlet is formed in one side of the first carrier gas inlet, a sample gas outlet is formed in the other ends of the first carrier gas inlet and the second carrier gas inlet, a fourteen-way valve is arranged at the other end of the sample gas outlet and comprises a first port, one end of the sample gas outlet is communicated with a second port, a third port is formed in one side of the second port and communicated with the fourteen-way valve, a sample gas inlet is formed in the other end of the third port and communicated with the sample gas inlet, and a fifth port is formed in one side, adjacent to the third port at intervals.
Description
Technical Field
The invention relates to the technical field of online monitoring analyzers, in particular to an online monitoring analyzer gas path structure.
Background
The gas chromatograph is an instrument for qualitatively and quantitatively analyzing a multi-component complex mixture by utilizing a chromatographic separation technology and a detection technology, and can be generally used for analyzing organic matters which are thermally stable and have a boiling point of not more than 500 ℃, such as volatile organic matters, organic chlorine, organic phosphorus, polycyclic aromatic hydrocarbons, phthalate esters and the like in soil. The gas path system comprises a gas source, a purifying and drying tube and a carrier gas flow rate control and gasification device, is a closed pipeline system for continuous operation of carrier gas, can obtain pure carrier gas with stable flow rate through the system, and has the advantages that the gas tightness, the flow measurement accuracy and the carrier gas flow rate stability are all important factors influencing the performance of the gas chromatograph.
The common carrier gas in gas chromatography includes hydrogen, nitrogen and argon, the purity is required to be more than 99%, the chemical inertness is good, the carrier gas does not react with related substances, and the selection of the carrier gas needs to be matched with an analysis object and a used detector besides considering the influence on the column effect.
The gas circuit structure of the existing on-line monitoring analyzer adopts a manual sample introduction mode, which can not effectively ensure that the waste gas continuously, stably and reliably enters the analyzer, and meanwhile, a plurality of groups of valves are required to be used for manufacturing, so that the price and the cost are higher.
Disclosure of Invention
The invention aims to provide an air passage structure of an on-line monitoring analyzer, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an on-line monitoring analysis appearance gas circuit structure, includes first carrier gas entry and analysis appearance, one side of first carrier gas entry is equipped with second carrier gas entry, first carrier gas entry all is equipped with the appearance gas export with the other end of second carrier gas entry, the other end of appearance gas export is equipped with fourteen logical valve, fourteen logical valve includes a mouth, the one end intercommunication of appearance gas export has No. two mouths, one side of No. two mouths is equipped with No. three mouths, and No. three mouths and fourteen logical valve intercommunication, the other end intercommunication of No. three mouths has the appearance gas entry, the adjacent one side in No. three mouth intervals is equipped with No. five mouths, and No. five mouths and fourteen logical valve intercommunication, the other end fixedly connected with blowback damping of No. five mouths, the relative one side of No. five mouths is equipped with No. ten mouths, and No. ten mouth and fourteen logical valve fixed connection, the other end fixedly connected with of No. ten mouths, the other end intercommunication of second carrier gas entry has No. fourteen mouths.
Preferably, one side adjacent to the fifth port is provided with a sixth port, the other end of the sixth port is communicated with a total hydrocarbon column, the back blowing damper is provided with an air source through a first carrier gas inlet, the other end of the total hydrocarbon column is fixedly connected with a methane column, and the other end of the methane column is fixedly connected with an FID detector.
Preferably, the methane column is of a different length than the total hydrocarbon column.
Preferably, one end of the first opening is communicated with a first quantitative ring, one side of the third opening is provided with a fourth opening which is communicated with the fourteen-way valve, the other end of the fourth opening is communicated with a second quantitative ring, the other end of the second quantitative ring is communicated with a seventh opening which is communicated with the fourteen-way valve.
Preferably, the other end of the first quantitative ring is communicated with an eighth opening, the other end of the eighth opening is fixedly connected with the fourteen-way valve, a ninth opening is formed in one side, adjacent to the eighth opening, of the eighth opening, and the other end of the ninth opening is communicated with the precutting column.
Preferably, the other end of the first carrier gas inlet is communicated with an eleventh port, a twelfth port is arranged on one side adjacent to the eleventh port, and the other end of the twelfth port is fixedly connected with the precutting column.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the arrangement of the first carrier gas inlet, the second carrier gas inlet and the analyzer, the automatic gas inlet mode can improve the automation degree, reduce the manual participation, is very stable and reliable, and solves the problem that the manual sample introduction mode is not stable and reliable enough;
2. according to the invention, through the fourteen-way valve, the fourteen-way valve with multiple ports can effectively reduce the production cost and the manufacturing cost price of multiple groups of valves.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top plan view of the fourteen way valve of the present invention;
FIG. 3 is a schematic view of a first dosing ring according to the present invention;
FIG. 4 is a schematic view of the structure of a total hydrocarbon column of the present invention;
FIG. 5 is a flow chart of the present invention.
In the figure: 1-first carrier gas inlet, 2-second carrier gas inlet, 3-sample gas outlet, 4-sample gas inlet, 5-back flushing damping, 6-first quantitative ring, 7-second quantitative ring, 8-precut column, 9-methane column, 10-evacuation port, 11-total hydrocarbon column, 12-FID detector, 13-fourteen way valve, 1301-first port, 1302-second port, 1303-third port, 1304-fourth port, 1305-fifth port, 1306-sixth port, 1307-seventh port, 1308-eighth port, 1309-ninth port, 1310-tenth port, 1311-eleventh port, 1312-twelfth port, 1313-thirteenth port, 1314-fourteen port and 14-analyzer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution:
the utility model provides an on-line monitoring analysis appearance gas circuit structure, includes first carrier gas entry 1 and analysis appearance 14, and one side of first carrier gas entry 1 is equipped with second carrier gas entry 2, and the other end of first carrier gas entry 1 and second carrier gas entry 2 all is equipped with appearance gas outlet 3.
And the other end of the sample gas outlet 3 is provided with a fourteen-way valve 13. Fourteen logical valve 13 includes No. one mouth 1301, the one end intercommunication of sample gas export 3 has No. two mouth 1302, the one side of No. two mouth 1302 is equipped with No. three mouth 1303, and No. three mouth 1303 and fourteen logical valve 13 intercommunication, the other end intercommunication of No. three mouth 1303 has sample gas entry 4, be favorable to the interpolation operation of sample gas, enter into fourteen logical valve 13's inside through No. three mouth 1303, carry out the circulation of each pipeline through blowback damping 5, no. three mouth 1303 interval adjacent one side is equipped with No. five mouth 1305, and No. five mouth 1305 and fourteen logical valve 13 intercommunication, the other end fixedly connected with blowback damping 5 of No. five mouth 1305, the opposite side of No. five mouth 1305 is equipped with No. ten mouth 1310, and No. ten mouth 1310 and fourteen logical valve 13 fixed connection, the other end fixedly connected with evacuation mouth 10 of No. ten mouth 1310, the other end intercommunication of second carrier gas entry 2 has No. fourteen mouth 1314, thereby be favorable to strengthening the automatic gas circuit detection operation of sample gas.
The adjacent side of the fifth port 1305 is provided with a sixth port 1306, the other end of the sixth port 1306 is communicated with a total hydrocarbon column 11, the blowback damper 5 is provided with an air source through a first carrier gas inlet 1, the other end of the total hydrocarbon column 11 is fixedly connected with a methane column 9, the other end of the methane column 9 is fixedly connected with an FID detector 12, the total hydrocarbon column 11 and the methane column 9 are convenient to guide and circulate the provided sample gas, the sample gas enters the FID detector 12 to be analyzed and detected, and automatic detection is completed. The lengths of the methane column 9 and the total hydrocarbon column 11 are different, so that the methane column 9 and the total hydrocarbon column 11 with different lengths can control the time of entering the sample gas, and the total hydrocarbon methane can be distinguished.
One end of the first opening 1301 is communicated with a first quantitative ring 6, one side of the third opening 1303 is provided with a fourth opening 1304, the fourth opening 1304 is communicated with the fourteen-way valve 13, the other end of the fourth opening 1304 is communicated with a second quantitative ring 7, the other end of the second quantitative ring 7 is communicated with a seventh opening 1307, and the seventh opening 1307 is communicated with the fourteen-way valve 13, so that sample gas can conveniently enter the first quantitative ring 6 and the second quantitative ring 7 for quantitative storage, and can rapidly supplement and enter the fourteen-way valve 13 through the seventh opening 1307.
The other end of the first quantitative ring 6 is communicated with an eighth opening 1308, the other end of the eighth opening 1308 is fixedly connected with the fourteen-way valve 13, a ninth opening 1309 is arranged on one side adjacent to the eighth opening 1308, and the other end of the ninth opening 1309 is communicated with the precut column 8, so that the precut column 8 can conveniently remove residual Ag ions, and the suppressor and the chromatographic column are prevented from being damaged.
The other end of the first carrier gas inlet 1 is communicated with an eleventh opening 1311, a twelfth opening 1312 is formed in one side, adjacent to the eleventh opening 1311, of the twelfth opening 1312, the other end of the twelfth opening 1312 is fixedly connected with the pre-cut column 8, the twelfth opening 1312 is conveniently connected with the pre-cut column 8 for circular cleaning, and the using effect is better.
The working process comprises the following steps: the device is characterized in that an electric appliance is an external power supply, the device is powered on, a first carrier gas inlet 1 and a second carrier gas inlet 2 are connected, a back flushing damper 5 is connected, when a fourteen-way valve 13 of the device is not switched, the sample gas is directly discharged after passing through a third port 1303 and a second port 1302, the carrier gas flows through a fourteen-port 1314, a first port 1301, a first quantitative ring 6, an eighth port 1308, a ninth port 1309, a pre-cut column 8, a thirteenth port 1313, a twelfth port 1312 and a methane column 9, the gas in the first quantitative ring 6 is sent into the methane column 9 and then enters a FID detector 12, meanwhile, one part of the first carrier gas inlet 1 flows through an eleventh port 1311 and a tenth port to be discharged, the other part flows through a fifth port 1305, a fourth port 1304, a second quantitative ring 7, a seventh port 1307, a sixth port 1306 and a total hydrocarbon column 11, the pre-cut column 8 is connected with the twelfth port 1312 and the ninth port 1309, ions in the added sample gas flow through a fifth port 1305, the fourth port 1310, the Ag ion removal ring 7 is removed, the Ag ions are prevented from directly entering a chromatographic column 11, and then enter a total hydrocarbon column 12, and the total hydrocarbon column is prevented from being directly sent into a trap for being sent into a total hydrocarbon detector 12. Because the lengths of the methane column 9 and the total hydrocarbon column 11 are different, the arrival times of the sample gases in the second quantitative ring 7 and the first quantitative ring 6 are different, so that the total hydrocarbon methane is distinguished, and the analysis and detection are carried out by the analyzer 14, thereby solving the problem that the manual sample introduction mode is not stable and reliable enough.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an on-line monitoring analysis appearance gas circuit structure, includes first carrier gas entry (1) and analysis appearance (14), its characterized in that: one side of first carrier gas inlet (1) is equipped with second carrier gas inlet (2), first carrier gas inlet (1) all is equipped with sample gas outlet (3) with the other end of second carrier gas inlet (2), the other end of sample gas outlet (3) is equipped with fourteen logical valve (13), fourteen logical valve (13) include No. one (1301), the one end intercommunication of sample gas outlet (3) has No. two mouthful (1302), one side of No. two mouthful (1302) is equipped with No. three mouth (1303), and No. three mouth (1303) and fourteen logical valve (13) intercommunication, the other end intercommunication of No. three mouthful (1303) has sample gas inlet (4), the adjacent one side in No. three mouthful (1303) interval is equipped with No. five mouthful (1305), and No. five mouthful (1310) and fourteen logical valve (13) intercommunication, the other end fixedly connected with blowback damping (5) of No. five mouthful (1305), the opposite one side of No. five mouthful (1305) is equipped with No. ten mouthful (1310), and No. ten mouthful (1310) and the other end fixedly connected with fourteen logical valve (1310), the other end fixedly connected with the carrier gas inlet (10) of No. two.
2. The gas circuit structure of the on-line monitoring analyzer according to claim 1, characterized in that: and a sixth port (1306) is arranged on one side adjacent to the fifth port (1305), the other end of the sixth port (1306) is communicated with a total hydrocarbon column (11), the back blowing damper (5) is provided with a gas source through a first carrier gas inlet (1), the other end of the total hydrocarbon column (11) is fixedly connected with a methane column (9), and the other end of the methane column (9) is fixedly connected with a FID detector (12).
3. The gas circuit structure of the on-line monitoring analyzer according to claim 2, characterized in that: the methane column (9) is of a different length than the total hydrocarbon column (11).
4. The gas circuit structure of the on-line monitoring analyzer according to claim 1, characterized in that: one end of the first opening (1301) is communicated with a first quantitative ring (6), one side of the third opening (1303) is provided with a fourth opening (1304), the fourth opening (1304) is communicated with a fourteen-way valve (13), the other end of the fourth opening (1304) is communicated with a second quantitative ring (7), the other end of the second quantitative ring (7) is communicated with a seventh opening (1307), and the seventh opening (1307) is communicated with the fourteen-way valve (13).
5. The gas circuit structure of the on-line monitoring analyzer according to claim 4, wherein: the other end of the first quantitative ring (6) is communicated with an eighth opening (1308), the other end of the eighth opening (1308) is fixedly connected with the fourteen-way valve (13), a ninth opening (1309) is formed in one side, adjacent to the eighth opening (1308), of the eighth opening (1308), and the other end of the ninth opening (1309) is communicated with a precutting column (8).
6. The gas circuit structure of the on-line monitoring analyzer according to claim 1, characterized in that: the other end of the first carrier gas inlet (1) is communicated with an eleventh opening (1311), a twelfth opening (1312) is formed in one side, adjacent to the eleventh opening (1311), of the twelfth opening (1312), and the other end of the twelfth opening (1312) is fixedly connected with the precutting column (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210737174.0A CN115144493A (en) | 2022-06-27 | 2022-06-27 | Gas circuit structure of on-line monitoring analyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210737174.0A CN115144493A (en) | 2022-06-27 | 2022-06-27 | Gas circuit structure of on-line monitoring analyzer |
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| CN115144493A true CN115144493A (en) | 2022-10-04 |
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| CN202210737174.0A Pending CN115144493A (en) | 2022-06-27 | 2022-06-27 | Gas circuit structure of on-line monitoring analyzer |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080260587A1 (en) * | 2004-07-02 | 2008-10-23 | Dennis Coleman | Hydrocarbon Preparation System |
| CN210720283U (en) * | 2019-09-11 | 2020-06-09 | 中绿环保科技股份有限公司 | Integrated gas chromatograph for measuring volatile organic compounds in water |
| CN111323525A (en) * | 2020-04-10 | 2020-06-23 | 苏州天蓝分析仪器有限公司 | Non-methane total hydrocarbon and benzene series concentration on-line analysis and detection device |
| CN111638289A (en) * | 2020-06-15 | 2020-09-08 | 江苏春潮科技发展有限公司 | Double-point sampling non-methane total hydrocarbon online monitoring equipment and detection method |
| CN213875557U (en) * | 2020-11-24 | 2021-08-03 | 上海奥嵩科学仪器有限公司 | Benzene series fourteen-way valve gas circuit system |
| CN214011151U (en) * | 2020-12-23 | 2021-08-20 | 广东盈峰科技有限公司 | Gas circuit system and non-methane total hydrocarbon on-line monitoring chromatograph |
| CN215339692U (en) * | 2021-03-25 | 2021-12-28 | 宁波盘福生物科技有限公司 | Novel portable gas chromatography mass spectrometer |
-
2022
- 2022-06-27 CN CN202210737174.0A patent/CN115144493A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080260587A1 (en) * | 2004-07-02 | 2008-10-23 | Dennis Coleman | Hydrocarbon Preparation System |
| CN210720283U (en) * | 2019-09-11 | 2020-06-09 | 中绿环保科技股份有限公司 | Integrated gas chromatograph for measuring volatile organic compounds in water |
| CN111323525A (en) * | 2020-04-10 | 2020-06-23 | 苏州天蓝分析仪器有限公司 | Non-methane total hydrocarbon and benzene series concentration on-line analysis and detection device |
| CN111638289A (en) * | 2020-06-15 | 2020-09-08 | 江苏春潮科技发展有限公司 | Double-point sampling non-methane total hydrocarbon online monitoring equipment and detection method |
| CN213875557U (en) * | 2020-11-24 | 2021-08-03 | 上海奥嵩科学仪器有限公司 | Benzene series fourteen-way valve gas circuit system |
| CN214011151U (en) * | 2020-12-23 | 2021-08-20 | 广东盈峰科技有限公司 | Gas circuit system and non-methane total hydrocarbon on-line monitoring chromatograph |
| CN215339692U (en) * | 2021-03-25 | 2021-12-28 | 宁波盘福生物科技有限公司 | Novel portable gas chromatography mass spectrometer |
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Application publication date: 20221004 |