CN215985902U - Multi-component chromatographic separation detection system - Google Patents
Multi-component chromatographic separation detection system Download PDFInfo
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- CN215985902U CN215985902U CN202122255218.XU CN202122255218U CN215985902U CN 215985902 U CN215985902 U CN 215985902U CN 202122255218 U CN202122255218 U CN 202122255218U CN 215985902 U CN215985902 U CN 215985902U
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Abstract
The utility model relates to the field of detection instruments, in particular to a multi-component chromatographic separation detection system which comprises a quantitative sampling assembly, a first six-way valve, a second six-way valve, a first chromatographic column, a second chromatographic column, a third chromatographic column and a detector. The device makes the gas circuit flow direction change through the interconnect of different valve openings when switching two six-way valves, makes the sample get into different chromatographic columns, separates different components. The separation is carried out in a parallel connection mode, the peak output time of flow paths on two sides is observed and compared, the continuous peak output condition of the gas containing four components can be realized by switching the two six-way valves, compared with a serial connection mode, the situation that a sample passes through other impurity chromatographic columns can be avoided, the separation efficiency is improved, the blank time between peak output of each component is shortened, the time is greatly saved, and the accuracy of a detection instrument is improved.
Description
Technical Field
The utility model relates to the field of detection instruments, in particular to a multi-component chromatographic separation detection system.
Background
In the field of detecting instruments and meters, a gas chromatograph and a mass spectrometer are combined, and the gas chromatograph, the gas chromatograph and the mass spectrometer are indispensable equipment and analysis technology for analyzing unknown substances, quantifying known substances and the like. The sample introduction of the gas chromatography is to introduce a sample into a gasification chamber or a chromatographic column of the gas chromatograph for analysis directly or after special treatment. In a chromatographic analyzer, the chromatographic analyzer mainly comprises two parts: the chromatographic column separation system and the detection system adopt an efficient chromatographic column system to quickly and accurately separate the mixed gas to be detected and provide accurate component content for a subsequent detection system, but in actual chromatographic column application, a great deal of time and energy can be spent on finding a proper chromatographic column and equipping a corresponding separation system. Particularly, in the detection of multi-component gas, a plurality of separation systems are often required at present, so that the pipeline is complex, the number of interfaces is large, the risk of gas leakage is easily caused, and the experimental result is inaccurate.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problems, an object of the present invention is to provide a multi-component chromatographic separation detection system, which can rapidly separate a multi-component sample, and has simple operation and convenient connection.
The technical scheme adopted by the utility model is as follows: a multi-component chromatographic separation detection system comprising:
the quantitative sampling component is used for extracting quantitative sample gas;
the first six-way valve is provided with six interfaces which are a first interface, a second interface, a third interface, a fourth interface, a fifth interface and a sixth interface in sequence along the clockwise direction;
the second six-way valve is provided with six interfaces which are a seventh interface, an eighth interface, a ninth interface, a tenth interface, an eleventh interface and a twelfth interface in sequence along the clockwise direction;
the inlet of the first chromatographic column is connected with the outlet of the quantitative sampling assembly, and the outlet of the first chromatographic column is connected with the fourth interface on the first six-way valve;
an inlet of the second chromatographic column is connected with a third interface on the first six-way valve, and an outlet of the second chromatographic column is connected with an eleventh interface on the second six-way valve;
the inlet of the third chromatographic column is connected with the fifth interface on the first six-way valve, and the outlet of the third chromatographic column is connected with the ninth interface on the second six-way valve;
and the detector is used for detecting the separated sample gas and is connected with the tenth interface on the second six-way valve.
The multi-component chromatographic separation detection system further includes that when the first six-way valve is turned on, the first interface is conducted with the second interface, the third interface is conducted with the fourth interface, and the fifth interface is conducted with the sixth interface; when the first six-way valve is closed, the first interface is communicated with the sixth interface, the second interface is communicated with the third interface, and the fourth interface is communicated with the fifth interface.
The multi-component chromatographic separation detection system as described above, further explained that, when the second six-way valve is turned on, the seventh interface is conducted with the eighth interface, the ninth interface is conducted with the tenth interface, and the eleventh interface is conducted with the twelfth interface; when the second six-way valve is closed, the seventh interface is communicated with the twelfth interface, the eighth interface is communicated with the ninth interface, and the tenth interface is communicated with the eleventh interface.
The multi-component chromatographic separation detection system further comprises a quantitative sampling component, wherein the quantitative sampling component comprises a third six-way valve and a quantitative ring, six interfaces are arranged on the third six-way valve, and are a first interface, a second interface, a third interface, a fourth interface, a fifth interface and a sixth interface in sequence in the clockwise direction, the quantitative ring is connected between the second interface and the fifth interface, the third interface is connected with a carrier gas inlet pipe, the fourth interface is connected with a carrier gas outlet pipe, the carrier gas outlet pipe is connected with an inlet of the first chromatographic column, the sixth interface is connected with a sample gas inlet pipe, and the first interface is connected with a sample gas outlet pipe.
The multi-component chromatographic separation detection system further comprises an inert coating layer arranged on the inner wall of the quantitative ring.
The utility model has the beneficial effects that: 1. the device makes the gas circuit flow direction change through the interconnect of different valve openings when switching two six-way valves, makes the sample get into different chromatographic columns, separates different components. The separation is carried out in a parallel connection mode, the peak output conditions of the gases A, B and the gases C, D containing four components can be continuously output by switching the two six-way valves through observing and comparing the peak output time of flow paths on two sides, compared with a serial connection mode, a sample can be prevented from passing through other impurity chromatographic columns, the separation efficiency is improved, the blank time between peak output of each component is shortened, the time is greatly saved, and the accuracy of a detection instrument is improved. 2. Meanwhile, the device is simple in overall structure, convenient to operate and connect, less in gas circuit connecting joints, greatly reduced in gas leakage risk and guaranteed to perform gas detection smoothly. 3. The corrosion resistance of the dosing ring can be increased by providing the inert coating on the inner wall of the dosing ring, thereby increasing the service life of the device.
Drawings
Fig. 1 is a schematic view of the connection structure of the present invention when the first six-way valve is opened and the second six-way valve is closed.
Fig. 2 is a schematic view of the connection structure of the present invention when the first six-way valve is closed and the second six-way valve is open.
In the figure: 1. a quantitative sampling assembly; 2. a first six-way valve; 21. a first interface; 22. a second interface; 23. a third interface; 24. a fourth interface; 25. a fifth interface; 26. a sixth interface; 3. a second six-way valve; 31. a seventh interface; 32. an eighth interface; 33. a ninth interface; 34. a tenth interface; 35. an eleventh interface; 36. a twelfth interface; 4. a first chromatographic column; 5. a second chromatography column; 6. a third chromatographic column; 7. a detector; 8. a third six-way valve; 81. an interface I; 82. interface two; 83. interface three; 84. interface four; 85. interface five; 86. a sixth interface; 9. a dosing ring; 10. a carrier gas inlet pipe; 11. a carrier gas outlet pipe; 12. a sample gas inlet pipe; 13. and a sample gas outlet pipe.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
As shown in fig. 1 and fig. 2, the present embodiment provides a multi-component chromatographic separation detection system, including: the quantitative sampling component 1 is used for extracting quantitative sample gas, specifically, the quantitative sampling component 1 comprises a third six-way valve 8 and a quantitative ring 9, the third six-way valve 8 is provided with six interfaces, which are a first interface 81, a second interface 82, a third interface 83, a fourth interface 84, a fifth interface 85 and a sixth interface 86 in sequence along the clockwise direction, the quantitative ring 9 is connected between the second interface 82 and the fifth interface 85, the third interface 83 is connected with a carrier gas inlet pipe 10, the fourth interface 84 is connected with a carrier gas outlet pipe 11, the carrier gas outlet pipe 11 is connected with an inlet of the first chromatographic column 4, the first chromatographic column 4 will be elaborated in detail hereinafter, the sixth interface 86 is connected with a sample gas inlet pipe 12, the first interface 81 is connected with a sample gas outlet pipe 13, so that by closing or opening the third six-way valve 8, namely, the quantitative collection of the sample gas can be realized through the quantitative ring 9. Specifically, when the third six-way valve 8 is opened, the interface five 85 is connected with the interface six 86, the interface one 81 is connected with the interface two 82, so that the sample enters the quantitative ring 9 from the sample gas inlet pipe 12 to realize quantitative collection of the sample gas, when the third six-way valve 8 is closed, the interface four 84 is connected with the interface five 85, the interface two 82 is connected with the interface three 83, so that the sample gas in the quantitative ring 9 enters the subsequent chromatographic column separation system under the drive of the carrier gas. Of course, the quantitative sampling assembly 1 described above is a preferred embodiment, and other quantitative sampling devices may be used, which are not necessarily illustrated herein.
In the using process, we find that different sample gases are corrosive when in detection, so that the quantifying ring 9 is most easily damaged in use, preferably, in order to increase the corrosion resistance of the quantifying ring 9 and further increase the service life of the device, an inert coating is arranged on the inner wall of the quantifying ring 9, no mark is shown in the figure, the corrosion resistance of the quantifying ring 9 can be greatly increased by arranging the inert coating, and particularly, the inert coating can be a gold-plated coating, and gold is an inert metal and cannot react with most gases, so that the use safety of the quantifying ring 9 is ensured. Of course, the inert coating may be sprayed with other inert materials, which are not illustrated here.
The multi-component chromatographic separation detection system provided by the embodiment further comprises a first six-way valve 2, wherein the first six-way valve 2 is provided with six interfaces, namely a first interface 21, a second interface 22, a third interface 23, a fourth interface 24, a fifth interface 25 and a sixth interface 26 in sequence along the clockwise direction;
the second six-way valve 3 is provided with six ports, namely a seventh port 31, an eighth port 32, a ninth port 33, a tenth port 34, an eleventh port 35 and a twelfth port 36 in sequence in the clockwise direction;
the inlet of the first chromatographic column 4 is connected with the outlet of the quantitative sampling assembly 1, and the outlet of the first chromatographic column 4 is connected with the fourth interface 24 on the first six-way valve;
an inlet of the second chromatographic column 5 is connected with the third interface 23 on the first six-way valve, and an outlet of the second chromatographic column 5 is connected with the eleventh interface 35 on the second six-way valve;
the inlet of the third chromatographic column 6 is connected with the fifth interface 25 on the first six-way valve, and the outlet of the third chromatographic column 6 is connected with the ninth interface 33 on the second six-way valve;
the detector 7 is used for detecting the separated sample gas, the detector 7 is connected with the tenth interface 34 on the second six-way valve, and the first six-way valve 2, the second six-way valve 3, the first chromatographic column 4, the second chromatographic column 5, the third chromatographic column 6 and the detector 7 are all the prior art in the field, and the specific structure and the working principle thereof are not explained in detail here.
As shown in fig. 1 and fig. 2, when the first six-way valve 2 is turned on, the first port 21 is in communication with the second port 22, the third port 23 is in communication with the fourth port 24, and the fifth port 25 is in communication with the sixth port 26; when the first six-way valve 2 is closed, the first port 21 and the sixth port 26 are communicated, the second port 22 and the third port 23 are communicated, and the fourth port 24 and the fifth port 25 are communicated.
When the second six-way valve 3 is on, the seventh interface 31 is conducted with the eighth interface 32, the ninth interface 33 is conducted with the tenth interface 34, and the eleventh interface 35 is conducted with the twelfth interface 36; when the second six-way valve 3 is closed, the seventh port 31 is in communication with the twelfth port 36, the eighth port 32 is in communication with the ninth port 33, and the tenth port 34 is in communication with the eleventh port 35.
The working principle of the utility model is as follows: by utilizing the interconnection of different valve holes when the first six-way valve 2 and the second six-way valve 3 are switched, the flow direction of the gas path is changed, so that a sample enters different chromatographic columns to separate different components. As shown in fig. 1, when the first six-way valve 2 is on and the second six-way valve 3 is off, for example, the mixed gas (a + B + C + D) is pushed by the carrier gas to pass through the first chromatographic column 4 and be primarily separated into two groups of mixed gas (a + B) and (C + D), and the mixed gas (a + B) enters the second chromatographic column 5 along the arrow direction for re-separation and then enters the detector. After the separation of (a + B) is completed, the states of the first six-way valve 2 and the second six-way valve 3 are switched, specifically, as shown in fig. 2, when the first six-way valve 2 is closed and the second six-way valve 3 is opened, the mixed gas (C + D) enters the third chromatographic column 6 for re-separation, and then enters the detector. Through adopting the parallel mode to separate, through observing the time of appearing the peak of contrast both sides flow path, the switching valve can reach gas A, B and gas C, the continuous condition of appearing the peak of D, compares in adopting the series connection mode, can avoid the sample to pass through all the other miscellaneous chromatographic columns, improves separation efficiency, shortens the blank time between each component appearance peak, and the cost has been practiced thrift greatly to improve detecting instrument's accuracy nature.
The utility model is not limited to the above-described examples, and various modifications or alterations without inventive work may be made by those skilled in the art within the scope of the utility model defined by the claims appended hereto.
Claims (5)
1. A multi-component chromatographic separation detection system comprising:
the quantitative sampling component is used for extracting quantitative sample gas;
the first six-way valve is provided with six interfaces which are a first interface, a second interface, a third interface, a fourth interface, a fifth interface and a sixth interface in sequence along the clockwise direction;
the second six-way valve is provided with six interfaces which are a seventh interface, an eighth interface, a ninth interface, a tenth interface, an eleventh interface and a twelfth interface in sequence along the clockwise direction;
the inlet of the first chromatographic column is connected with the outlet of the quantitative sampling assembly, and the outlet of the first chromatographic column is connected with the fourth interface on the first six-way valve;
an inlet of the second chromatographic column is connected with a third interface on the first six-way valve, and an outlet of the second chromatographic column is connected with an eleventh interface on the second six-way valve;
the inlet of the third chromatographic column is connected with the fifth interface on the first six-way valve, and the outlet of the third chromatographic column is connected with the ninth interface on the second six-way valve;
and the detector is used for detecting the separated sample gas and is connected with the tenth interface on the second six-way valve.
2. The multi-component chromatographic separation detection system according to claim 1, characterized in that: when the first six-way valve is started, the first interface is communicated with the second interface, the third interface is communicated with the fourth interface, and the fifth interface is communicated with the sixth interface; when the first six-way valve is closed, the first interface is communicated with the sixth interface, the second interface is communicated with the third interface, and the fourth interface is communicated with the fifth interface.
3. The multi-component chromatographic separation detection system according to claim 2, characterized in that: when the second six-way valve is started, the seventh interface is communicated with the eighth interface, the ninth interface is communicated with the tenth interface, and the eleventh interface is communicated with the twelfth interface; when the second six-way valve is closed, the seventh interface is communicated with the twelfth interface, the eighth interface is communicated with the ninth interface, and the tenth interface is communicated with the eleventh interface.
4. A multi-component chromatographic separation detection system according to any one of claims 1 to 3 characterized in that: the quantitative sampling subassembly includes third six-way valve and ration ring, be equipped with six interfaces on the third six-way valve, be interface one, interface two, interface three, interface four, interface five and interface six in proper order along clockwise, be connected with between interface two and the interface five the ration ring, be connected with the carrier gas intake pipe on the interface three, be connected with the carrier gas outlet duct on the interface four, the inlet connection of carrier gas outlet duct and first chromatographic column, be connected with the sample gas intake pipe on the interface six, be connected with the sample gas outlet duct on the interface one.
5. The multi-component chromatographic separation detection system according to claim 4, characterized in that: and an inert coating is arranged on the inner wall of the quantitative ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122255218.XU CN215985902U (en) | 2021-09-16 | 2021-09-16 | Multi-component chromatographic separation detection system |
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| CN202122255218.XU CN215985902U (en) | 2021-09-16 | 2021-09-16 | Multi-component chromatographic separation detection system |
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| CN215985902U true CN215985902U (en) | 2022-03-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116953088A (en) * | 2023-09-20 | 2023-10-27 | 眉山麦克在线设备股份有限公司 | Chromatographic and continuous analysis module combined system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116953088A (en) * | 2023-09-20 | 2023-10-27 | 眉山麦克在线设备股份有限公司 | Chromatographic and continuous analysis module combined system and method |
| CN116953088B (en) * | 2023-09-20 | 2023-12-29 | 眉山麦克在线设备股份有限公司 | Chromatographic and continuous analysis module combined system and method |
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