CN211877885U - Three-valve four-column one-time sample introduction full-analysis gas chromatograph - Google Patents
Three-valve four-column one-time sample introduction full-analysis gas chromatograph Download PDFInfo
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- CN211877885U CN211877885U CN202020663537.7U CN202020663537U CN211877885U CN 211877885 U CN211877885 U CN 211877885U CN 202020663537 U CN202020663537 U CN 202020663537U CN 211877885 U CN211877885 U CN 211877885U
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Abstract
The utility model discloses a three valve four-column once advances a kind full analysis gas chromatograph, including sampling system, piece-rate system, detecting system and the data acquisition processing system that sets gradually, still include gas circuit system and circuit system, the last six-way valve of sampling system includes first six-way valve, second six-way valve and third six-way valve, the third mouth of six-way valve, sixth mouth all communicate with quantitative ring, the second mouth of first six-way valve is the introduction port, its first mouth with the second mouth intercommunication of second six-way valve, the first mouth of second six-way valve with the second mouth intercommunication of third six-way valve, the first mouth and the blast pipe intercommunication of third six-way valve. The utility model adopts the above structure a kind full analysis gas chromatograph is once advanced to three valves four columns can carry out the analysis to different gases simultaneously, easy operation, low cost, and systematic error is little.
Description
Technical Field
The utility model relates to a gas chromatograph technical field especially relates to a three valve four-column advances a kind full analysis gas chromatograph once.
Background
The gas generated by the coal chemical industry or other industries is very complex, and has various gases, and the gas contains the following components: oxygen, nitrogen, methane, carbon dioxide, carbon monoxide, ethylene, ethane, acetylene, propane, and the like. When analyzing these gases, the prior art uses a plurality of gas chromatographs for analysis, which brings about many troubles, such as increased cost, complicated calculation, increased system error, etc.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a three valve four-column once advance kind full analysis gas chromatograph can carry out the analysis to the different grade type gas simultaneously, easy operation, low cost, and systematic error is little.
In order to achieve the above object, the utility model provides a three-valve four-column once sample injection total analysis gas chromatograph, including sampling system, separation system, detecting system and the data acquisition processing system that set gradually, still include gas circuit system and circuit system, six-way valve on the sampling system includes first six-way valve, second six-way valve and third six-way valve, the third mouth, the sixth mouth of six-way valve all communicate with quantitative ring, the second mouth of first six-way valve is the introduction port, and its first mouth communicates with the second mouth of second six-way valve, the first mouth of second six-way valve with the second mouth of third six-way valve communicates, the first mouth and the blast pipe of third six-way valve communicate;
and a fourth port of each six-way valve is communicated with the carrier gas of the gas path system, a fifth port of each six-way valve is communicated with the separation system, and a chromatographic column in the separation system comprises a chromatographic column 5A analysis sieve and a Porapak Q/TDX-01 mixed column which are communicated with the first six-way valve, a GDX-502/Porapak N which is communicated with the second six-way valve, and a TDX-01 which is communicated with the third six-way valve.
Preferably, the detection system comprises a thermal conductivity detector communicated with the chromatographic column 5A analysis sieve and the Porapak Q/TDX-01 mixing column, a hydrogen flame ionization detector communicated with the GDX-502/Porapak N, and a hydrogen flame ionization detector and a converter communicated with the TDX-01.
Preferably, the gas path system comprises a carrier gas, a fuel gas and an auxiliary gas source, the carrier gas comprises a carrier gas A communicated with the first six-way valve and a carrier gas B communicated with the second six-way valve and the third six-way valve, and the fuel gas and the auxiliary gas source are both communicated with the detection system.
Preferably, the carrier gas A is nitrogen, the carrier gas B is hydrogen, and the carrier gas is communicated with the six-way valve sequentially through a pressure stabilizing valve, a pressure gauge, a flow stabilizing valve and a column pressure gauge.
Preferably, the circuitry converts an analog power supply to a digital power supply.
Therefore, the utility model adopts the above structure a three valve four-column once advance kind full analysis gas chromatograph has following advantage:
(1) the full analysis of the whole components is solved at one time;
(2) because the sample introduction is carried out once, the system error caused by multiple sample introduction is reduced;
(3) the complete component analysis can be completed by one gas chromatograph, and the detection cost is reduced.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic diagram of the operation of an embodiment of a triple-valve four-column one-time sample-injection total-analysis gas chromatograph according to the present invention;
fig. 2 is a working schematic diagram of the utility model after the sample introduction of the three-valve four-column once sample introduction full-analysis gas chromatograph.
Reference numerals
1. A first six-way valve; 2. a second six-way valve; 3. a third six-way valve; 4. a dosing ring; 5. a chromatographic column.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following describes embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is the utility model relates to a three valve four-column once advances a kind theory of operation picture of full analysis gas chromatograph embodiment, fig. 2 is the utility model relates to a three valve four-column once advances a kind theory of operation picture after full analysis gas chromatograph advances a kind, as shown in the figure, a three valve four-column once advances a kind full analysis gas chromatograph, including sampling system, piece-rate system, detecting system and the data acquisition processing system that sets gradually, data processing system refers to and carries out the chromatogram data acquisition and the processing workstation that unified calculation was carried out to different passageway data collection. Besides, the power supply also comprises a gas circuit system and a circuit system, wherein the circuit system converts an analog power supply into a digital power supply.
The six-way valve on the sample injection system comprises a first six-way valve 1, a second six-way valve 2 and a third six-way valve 3, a third port and a sixth port of the six-way valve are both communicated with the quantitative ring 4, a second port of the first six-way valve 1 is a sample injection port, a first port of the first six-way valve is communicated with a second port of the second six-way valve 2, a first port of the second six-way valve 2 is communicated with a second port of the third six-way valve 3, and a first port of the third six-way valve 3 is communicated with the exhaust pipe;
the fourth port of each six-way valve is communicated with the carrier gas of the gas path system, the fifth port of each six-way valve is communicated with the separation system, and the chromatographic column 5 in the separation system comprises a chromatographic column 5A analysis sieve and a Porapak Q/TDX-01 mixed column which are communicated with the first six-way valve, a GDX-502/Porapak N which is communicated with the second six-way valve, and a TDX-01 which is communicated with the third six-way valve.
The detection system comprises a thermal conductivity detector communicated with a chromatographic column 5A analysis sieve and a Porapak Q/TDX-01 mixing column, a hydrogen flame ionization detector communicated with GDX-502/Porapak N, and a hydrogen flame ionization detector and a converter communicated with TDX-01.
The gas path system comprises carrier gas, fuel gas and an auxiliary gas source, wherein the carrier gas comprises carrier gas A communicated with the first six-way valve and carrier gas B communicated with the second six-way valve and the third six-way valve, the carrier gas A is nitrogen, and the carrier gas B is hydrogen. The carrier gas is communicated with the six-way valve through a pressure stabilizing valve, a pressure gauge, a flow stabilizing valve and a column pressure gauge in sequence. The gas and the auxiliary gas source are both communicated with the detection system.
The utility model discloses a gas chromatograph's theory of operation and use as follows:
(1) sampling
As shown in FIG. 1, the sample enters from the first six-way valve "2", enters the quantitative ring through "3", exits from "1" through "6" and enters the second six-way valve, and the flow process of the sample is 2-3-6-1; similarly, the sample passes through the second six-way valve 2-3-6-1 and then enters the third six-way valve inlet 2 "; the sample was vented at "1" during the flow-through of the third six-way valve, 2-3-6-1.
(2) Sample introduction
After the sample is taken, the first six-way valve is switched as shown in figure 2, the carrier gas A enters from the inlet 4 of the first six-way valve, then enters the quantitative ring through 3, the sample is pushed to pass 6, enters the vaporization chamber A from 5, and then enters the 5A molecular sieve and the Porapak Q/TDX-01 chromatographic column, and the flow path of the gas is 4-3-6-5. Thus, the carrier gas carries the sample to pass through the chromatographic column for separation and then enters the TCD detector to detect carbon dioxide, oxygen, nitrogen and methane.
The method for detecting by taking inorganic as a main part and organic as an auxiliary part comprises the steps of switching a second six-way valve after an organic system sample is taken as shown in figure 2, enabling a carrier gas B to enter a quantitative ring from an inlet 4 of the second six-way valve through 3, pushing the sample to pass 6, enabling the sample to enter a vaporization chamber B from 5 and then enter a chromatographic column, and enabling the flow path of gas to be 4-3-6-5. Thus, the carrier gas steady flow valve B carries the sample to enter a detector FIDA after being separated by a chromatographic column, and methane, ethylene, ethane, acetylene and propane are detected.
In the detection method taking inorganic as a main part and organic as an auxiliary part, a third six-way valve is switched after a sample is taken as shown in figure 2, the flow of carrier gas B is that the inlet 4 of the third six-way valve enters a quantitative ring through 3, the sample is pushed to pass 6 and enter a TDX-01 chromatographic column from 5, and the flow path of the gas is 4-3-6-5. Thus, the carrier gas steady flow valve C carries a sample to pass through a chromatographic column for separation and then enter the FIDB for detecting methane, carbon dioxide and carbon monoxide.
(3) And obtaining a content result through a qualitative and quantitative data processing system after detection.
Therefore, the utility model adopts the above structure a kind full analysis gas chromatograph is once advanced to three valves four columns can carry out the analysis to the different grade type gas simultaneously, easy operation, low cost, and systematic error is little.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (5)
1. The utility model provides a three valve four-column once advances a kind full analysis gas chromatograph, includes sampling system, piece-rate system, detecting system and the data acquisition processing system that sets gradually, still includes gas piping system and circuit system, its characterized in that: the six-way valve on the sample injection system comprises a first six-way valve, a second six-way valve and a third six-way valve, wherein a third port and a sixth port of the six-way valve are communicated with the quantitative ring, a second port of the first six-way valve is a sample injection port, a first port of the first six-way valve is communicated with a second port of the second six-way valve, a first port of the second six-way valve is communicated with a second port of the third six-way valve, and a first port of the third six-way valve is communicated with an exhaust pipe;
and a fourth port of each six-way valve is communicated with the carrier gas of the gas path system, a fifth port of each six-way valve is communicated with the separation system, and a chromatographic column in the separation system comprises a chromatographic column 5A analysis sieve and a Porapak Q/TDX-01 mixed column which are communicated with the first six-way valve, a GDX-502/Porapak N which is communicated with the second six-way valve, and a TDX-01 which is communicated with the third six-way valve.
2. The triple valve four-column one-time-injection total analysis gas chromatograph of claim 1, wherein: the detection system comprises a thermal conductivity detector communicated with the chromatographic column 5A analysis sieve and the Porapak Q/TDX-01 mixing column, a hydrogen flame ionization detector communicated with the GDX-502/Porapak N, and a hydrogen flame ionization detector and a converter communicated with the TDX-01.
3. The triple valve four-column one-time-injection total analysis gas chromatograph of claim 1, wherein: the gas path system comprises carrier gas, fuel gas and an auxiliary gas source, the carrier gas comprises carrier gas A communicated with the first six-way valve and carrier gas B communicated with the second six-way valve and the third six-way valve, and the fuel gas and the auxiliary gas source are both communicated with the detection system.
4. The triple valve four-column one-time-injection total analysis gas chromatograph of claim 3, wherein: the carrier gas A is nitrogen, the carrier gas B is hydrogen, and the carrier gas is communicated with the six-way valve sequentially through a pressure stabilizing valve, a pressure gauge, a flow stabilizing valve and a column pressure gauge.
5. The triple valve four-column one-time-injection total analysis gas chromatograph of claim 1, wherein: the circuitry converts the analog power source to a digital power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020663537.7U CN211877885U (en) | 2020-04-27 | 2020-04-27 | Three-valve four-column one-time sample introduction full-analysis gas chromatograph |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020663537.7U CN211877885U (en) | 2020-04-27 | 2020-04-27 | Three-valve four-column one-time sample introduction full-analysis gas chromatograph |
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| CN211877885U true CN211877885U (en) | 2020-11-06 |
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| CN202020663537.7U Active CN211877885U (en) | 2020-04-27 | 2020-04-27 | Three-valve four-column one-time sample introduction full-analysis gas chromatograph |
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