CN216594945U - Permanent gas analysis device - Google Patents
Permanent gas analysis device Download PDFInfo
- Publication number
- CN216594945U CN216594945U CN202122420529.7U CN202122420529U CN216594945U CN 216594945 U CN216594945 U CN 216594945U CN 202122420529 U CN202122420529 U CN 202122420529U CN 216594945 U CN216594945 U CN 216594945U
- Authority
- CN
- China
- Prior art keywords
- way valve
- chromatographic column
- permanent gas
- gas analysis
- port
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a permanent gas analysis device, comprising: the system comprises a gas chromatograph, a valve box, a first permanent gas analysis channel and a second permanent gas analysis channel; the first permanent gas analysis channel is provided with a four-way valve, a ten-way valve, a first chromatographic column, a second chromatographic column and a PDD detector, wherein the four-way valve is connected with the ten-way valve, the ten-way valve is respectively connected with the first chromatographic column and the second chromatographic column, and the first chromatographic column is connected with the PDD detector; the second permanent gas analysis channel is provided with a six-way valve, a third chromatographic column and a TCD detector, the six-way valve is connected with the third chromatographic column, and the third chromatographic column is connected with the TCD detector. The utility model adopts two channels to detect the permanent gas, adopts the TCD detector of the first permanent gas analysis channel to detect when the gas concentration is high, and adopts the PDD detector of the second permanent gas analysis channel to detect when the gas concentration is low, thereby realizing the accurate analysis and test of the gas concentration in a wide range.
Description
Technical Field
The utility model relates to the technical field of gas detection, in particular to a permanent gas analysis device.
Background
There are many methods for standard gas analysis, but the main methods used are: gas chromatography, chemiluminescence, non-dispersive infrared, and other methods for trace water and trace oxygen analysis. The gas chromatography is suitable for analyzing inorganic gases such as hydrogen, oxygen, nitrogen, argon, helium, carbon monoxide, carbon dioxide and the like, and most organic gases such as methane, ethane, propylene and more than C3. The gas chromatograph mainly comprises a gas path system, a sample introduction system, a column thermostat, a chromatographic column, a detector, a data processing system and the like. The gas chromatography is used for analyzing standard gas to obtain accurate and reliable analysis results, and an analysis method needs to be established and proper operation conditions and operation technologies need to be selected.
At present, the permanent gas is mostly measured by singly adopting TCD (thermal conductivity detector) to test the permanent gas, only the permanent gas with higher concentration can be tested, the sensitivity is not high, and the gas test with low concentration cannot be realized. Therefore, it is necessary to design a permanent gas analysis apparatus to test permanent gases having high gas concentrations and low gas concentrations.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the utility model is to overcome the defect that the permanent gas with higher gas concentration cannot be detected only by adopting a TCD detector in the prior art.
In order to solve the technical problem, the utility model provides a permanent gas analysis device, which comprises a gas chromatograph, a valve box, a first permanent gas analysis channel and a second permanent gas analysis channel;
the gas chromatograph comprises a PDD detector, a TCD detector, a first chromatographic column, a second chromatographic column and a third chromatographic column, wherein the first chromatographic column, the second chromatographic column and the third chromatographic column are arranged in a gas chromatograph oven box;
the first permanent gas analysis channel is provided with the four-way valve, the ten-way valve, the first chromatographic column, the second chromatographic column and the PDD detector, the four-way valve is connected with the ten-way valve, the ten-way valve is respectively connected with the first chromatographic column and the second chromatographic column, and the first chromatographic column is connected with the PDD detector;
the second permanent gas analysis channel is provided with the six-way valve, the third chromatographic column and the TCD detector, the six-way valve is connected with the third chromatographic column, and the third chromatographic column is connected with the TCD detector.
In one embodiment of the present invention, a first dosing ring is disposed within the ten way valve.
In one embodiment of the utility model, one end of the first quantitative ring is connected with the first port of the ten-way valve, and the other end of the first quantitative ring is connected with the fourth port of the ten-way valve.
In one embodiment of the utility model, the first dosing ring is a 1ml dosing ring.
In one embodiment of the utility model, a second dosing ring is arranged in the six-way valve.
In one embodiment of the utility model, one end of the second quantitative ring is connected with the first port of the six-way valve, and the other end of the second quantitative ring is connected with the fourth port of the six-way valve.
In one embodiment of the utility model, the fourth port of the four-way valve is connected with the second port of the ten-way valve.
In one embodiment of the present invention, the eighth port of the ten-way valve is connected to the first chromatography column, and the ninth port of the ten-way valve is connected to the second chromatography column.
In one embodiment of the utility model, the fifth port of the six-way valve is connected with the third chromatographic column.
In one embodiment of the utility model, the first permanent gas analysis channel is provided with a damping tube.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
the permanent gas analysis device comprises a gas chromatograph, a valve box, a first permanent gas analysis channel and a second permanent gas analysis channel; the gas chromatograph comprises a PDD detector, a TCD detector, a first chromatographic column, a second chromatographic column and a third chromatographic column, wherein the first chromatographic column, the second chromatographic column and the third chromatographic column are arranged in a gas chromatograph oven box; the first permanent gas analysis channel is provided with the four-way valve, the ten-way valve, the first chromatographic column, the second chromatographic column and the PDD detector, the four-way valve is connected with the ten-way valve, the ten-way valve is respectively connected with the first chromatographic column and the second chromatographic column, and the first chromatographic column is connected with the PDD detector; the second permanent gas analysis channel is provided with the six-way valve, the third chromatographic column and the TCD detector, the six-way valve is connected with the third chromatographic column, and the third chromatographic column is connected with the TCD detector. The utility model adopts the double permanent gas analysis channels to detect the permanent gas, the first permanent gas analysis channel adopts the TCD detector to detect, the second permanent gas analysis channel adopts the PDD detector to detect, when the gas concentration is high, the TCD detector of the first permanent gas analysis channel is adopted to detect, when the gas concentration is low, the PDD detector of the second permanent gas analysis channel is adopted to detect, and the accurate analysis and test of the gas concentration in a wide range are realized.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic view of the ten-way valve and the six-way valve of the permanent gas analysis apparatus according to the present invention in a loading state;
FIG. 2 is a schematic view showing the analytical states of a ten-way valve and a six-way valve of the permanent gas analyzing apparatus according to the present invention;
the labels in the figure are: ten-way valve V1; six-way valve V2; four-way valve V3.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
The utility model provides a permanent gas analysis device, which comprises a gas chromatograph, a valve box, a first permanent gas analysis channel and a second permanent gas analysis channel;
the gas chromatograph comprises a PDD detector, a TCD detector, a first chromatographic column, a second chromatographic column and a third chromatographic column, wherein the first chromatographic column, the second chromatographic column and the third chromatographic column are arranged in a gas chromatograph oven box;
the first permanent gas analysis channel is provided with the four-way valve and the ten-way valve, the four-way valve is connected with the ten-way valve, the ten-way valve is respectively connected with the first chromatographic column and the second chromatographic column, and the first chromatographic column is connected with the PDD detector;
the second permanent gas analysis channel is provided with the six-way valve, the six-way valve is connected with the third chromatographic column, and the third chromatographic column is connected with the TCD detector.
The system that this embodiment provided has adopted two permanent gas analysis passageways to test permanent gas, adopts the TCD detector of first permanent gas analysis passageway to detect when gas concentration is high, adopts the PDD detector of second permanent gas analysis passageway to detect when gas concentration is low, has realized that gas concentration is at the accurate analysis and test of very wide range.
Based on the above embodiments, the present embodiment further describes the above embodiments; a first quantitative ring is arranged in the ten-way valve. One end of the first quantitative ring is connected with a first port of the ten-way valve, and the other end of the first quantitative ring is connected with a fourth port of the ten-way valve. The first quantitative ring may be a 1mL quantitative ring or a 3mL quantitative ring, and is not limited in the embodiments of the present invention. And a second quantitative ring is arranged in the six-way valve. One end of the second quantitative ring is connected with the first port of the six-way valve, and the other end of the second quantitative ring is connected with the fourth port of the six-way valve. The second quantification loop may be a 1mL quantification loop or a 3mL quantification loop, and is not limited in the embodiments of the present invention. And a fourth port of the four-way valve is connected with a second port of the ten-way valve. And an eighth port of the ten-way valve is connected with the first chromatographic column, and a ninth port of the ten-way valve is connected with the second chromatographic column. And a fifth port of the six-way valve is connected with the third chromatographic column. The first permanent gas analysis channel is provided with a damping tube.
The working process of the permanent gas analysis device is as follows: as shown in fig. 1 and 2, when the gas concentration is low, a first permanent gas analysis channel is selected, and the four-way valve is turned to an ON state, so that the sample is filled into the first quantitative ring to form a sample loading state; and rotating the ten-way valve to an ON state to enable carrier gas He to enter from a port 10 and exit from a port 5 to enter the second chromatographic column, performing first separation ON the second chromatographic column, continuously entering a sample which first exits from the second chromatographic column into the first chromatographic column, and performing second separation ON the first chromatographic column. At some point in time, the ten-way valve switches to the OFF state. At this point, the sample already on the first column is unaffected and the second separation is continued. And the sample still positioned on the second chromatographic column is backflushed out of the second chromatographic column by the other path of carrier gas He to form a back-flushing function, and the well-separated sample obtained on the first chromatographic column can directly enter a PDD detector for detection. The ten-way valve firstly brings a sample into the second chromatographic column for first separation, introduces lighter and first-out peak components into the first chromatographic column for second separation, and then back blows unnecessary heavier components into the chromatographic column, so that the pollution of the chromatographic column is avoided, and the analysis speed is accelerated.
When the gas concentration is high, selecting a second permanent gas analysis channel, rotating the six-way valve to an OFF state, and filling a sample into the second quantitative ring to form a sample loading state; and rotating the six-way valve to an ON state, so that carrier gas He enters from the No. 6 port, exits from the No. 5 port and enters the third chromatographic column, and finally enters the TCD detector for detection. The states and functions of the four-way valve, the ten-way valve and the six-way valve are shown in the following table 1, and the switching states and times of the four-way valve, the ten-way valve and the six-way valve are shown in the following table 2.
TABLE 1
| Valve number | Set state | Function(s) |
| V1 | OFF | The sample is filled into the quantitative ring, and the second chromatographic column is in a back blowing state |
| V1 | ON | The sample enters a third chromatographic column |
| V2 | OFF | Sample filling quantitative ring |
| V2 | ON | The sample enters a third chromatographic column |
| V3 | OFF | Sample plugging in valve |
| V3 | ON | Sample filling quantitative ring |
TABLE 2
| Valve cut time | Valve number | Status of state |
| 0.40 | Aux oven#1 | ON |
| 0.01 | Aux |
ON |
| 0.30 | |
OFF |
| 0.01 | Aux |
ON |
In the system provided by this embodiment, the first permanent gas analysis channel adopts the four-way valve, the ten-way valve, the first quantitative ring, the first chromatographic column, the second chromatographic column and the PDD detector to realize the functions of sample introduction and analysis of the low-concentration permanent gas; the second permanent gas analysis channel adopts a six-way valve, a second quantitative ring, a third chromatographic column and a TCD detector to realize the functions of sample introduction and analysis of the high-concentration permanent gas; the double permanent gas analysis channels are adopted to test the permanent gas with low concentration and high concentration, thereby realizing accurate analysis and test in a wide range of gas concentration.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (10)
1. A permanent gas analysis apparatus comprising a gas chromatograph, a valve box, a first permanent gas analysis channel, and a second permanent gas analysis channel;
the gas chromatograph comprises a PDD detector, a TCD detector, a first chromatographic column, a second chromatographic column and a third chromatographic column, wherein the first chromatographic column, the second chromatographic column and the third chromatographic column are arranged in a gas chromatograph oven box;
the first permanent gas analysis channel is provided with the four-way valve, the ten-way valve, the first chromatographic column, the second chromatographic column and the PDD detector, the four-way valve is connected with the ten-way valve, the ten-way valve is respectively connected with the first chromatographic column and the second chromatographic column, and the first chromatographic column is connected with the PDD detector;
the second permanent gas analysis channel is provided with the six-way valve, the third chromatographic column and the TCD detector, the six-way valve is connected with the third chromatographic column, and the third chromatographic column is connected with the TCD detector.
2. The device of claim 1, wherein a first dosing ring is disposed within the ten way valve.
3. The device of claim 2, wherein one end of the first dosing ring is connected to port one of the ten way valves and the other end of the first dosing ring is connected to port four of the ten way valves.
4. The device of claim 2, wherein the first dosing ring is a 1ml dosing ring.
5. The device of claim 1, wherein a second dosing ring is disposed within the six-way valve.
6. The apparatus as in claim 5, wherein one end of the second dosing ring is connected to port one of the six way valves and the other end of the second dosing ring is connected to port four of the six way valves.
7. The device of claim 1, wherein port four of the four-way valve is connected to port two of the ten-way valve.
8. The apparatus of claim 1, wherein port eight of the ten-way valve is connected to the first chromatography column and port nine of the ten-way valve is connected to the second chromatography column.
9. The apparatus of claim 1, wherein port five of the six-way valve is connected to the third chromatography column.
10. The apparatus of claim 1, wherein the first permanent gas analysis channel is provided with a damper tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122420529.7U CN216594945U (en) | 2021-10-08 | 2021-10-08 | Permanent gas analysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122420529.7U CN216594945U (en) | 2021-10-08 | 2021-10-08 | Permanent gas analysis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216594945U true CN216594945U (en) | 2022-05-24 |
Family
ID=81639652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122420529.7U Active CN216594945U (en) | 2021-10-08 | 2021-10-08 | Permanent gas analysis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216594945U (en) |
-
2021
- 2021-10-08 CN CN202122420529.7U patent/CN216594945U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101923098B (en) | Continuous on-line analysis device of benzene, total hydrocarbons, methane and CO in carbon dioxide | |
| CN104155402B (en) | For SF 6the helium ionized gas phase chromatographic system that decomposition product is analyzed | |
| CN104076102B (en) | Mobile insulation dissolved gas analysis instrument and detection method thereof | |
| CN207457147U (en) | A kind of non-methane total hydrocarbons and benzene homologues on-line monitoring chromatograph | |
| CN105510478A (en) | Online detection device and method of non-methane total hydrocarbon | |
| CN111323525B (en) | Non-methane total hydrocarbon and benzene series concentration on-line analysis and detection device | |
| CN210427492U (en) | Novel methane non-methane total hydrocarbon flow architecture | |
| CN113311090A (en) | Online integrated monitoring system and detection method for volatile organic compounds and malodorous substances of fixed pollution source | |
| CN204008580U (en) | For SF 6the helium ionized gas phase chromatographic system that decomposition product is analyzed | |
| CN201765237U (en) | Continuous online analysis device for analyzing benzene, total hydrocarbons, methane and carbon monoxide in carbon dioxide | |
| CN105572281B (en) | The gas chromatographic analysis device and its analysis method of a kind of high purity oxygen gas | |
| CN202305489U (en) | Chromatographic instrument for detecting failure of SF6 electric equipment | |
| CN216594945U (en) | Permanent gas analysis device | |
| CN203824974U (en) | Universal online multidimensional gas chromatography device for low-carbon catalytic conversion reaction | |
| CN109115919B (en) | Gas chromatography analysis device and analysis method for trace hydrogen, oxygen and nitrogen in gas | |
| CN112986442A (en) | Oil-gas integrated detection gas chromatograph for high-voltage electrical equipment | |
| CN103472162B (en) | The method that methane in sewage gas and hydrogen detect simultaneously | |
| CN2616907Y (en) | Gaseous phase chromatograph with three detectors | |
| CN201130172Y (en) | Thermal desorption instrument gasometry flow circuit apparatus | |
| CN203811584U (en) | Pure oxygen gas chromatography detection universal device | |
| CN206348305U (en) | A kind of portable oil chromatography detecting system | |
| CN212540226U (en) | Navigation monitoring system based on multi-channel technology | |
| CN101975830B (en) | Gas chromatograph capable of simultaneously measuring oxygen and nitrogen in gas | |
| CN212568651U (en) | Non-methane total hydrocarbon detection device | |
| CN109490447B (en) | Sulfur hexafluoride mixed gas mixing ratio chromatographic detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |