CN213040315U - Gas chromatograph gas supply line - Google Patents
Gas chromatograph gas supply line Download PDFInfo
- Publication number
- CN213040315U CN213040315U CN202021161059.6U CN202021161059U CN213040315U CN 213040315 U CN213040315 U CN 213040315U CN 202021161059 U CN202021161059 U CN 202021161059U CN 213040315 U CN213040315 U CN 213040315U
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- China
- Prior art keywords
- gas
- air
- gas chromatograph
- supply line
- main trachea
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Abstract
The utility model belongs to the technical field of the air supply line, a gas chromatograph air supply line is related to, including main trachea, parallelly connected in a plurality of air supply unit of main trachea entrance point and parallelly connected in a plurality of gas chromatograph of main trachea exit end, be equipped with the main valve on the main trachea, all be equipped with an air inlet stop valve on every branch of main trachea connection air supply unit, all be equipped with the stop valve of giving vent to anger on every branch of main trachea connection gas chromatograph. The gas supply pipeline can supply gas to a plurality of gas chromatographs by using a plurality of gas source devices, thereby reducing the risk that the gas chromatographs cannot work due to insufficient gas supply of individual gas source devices.
Description
Technical Field
The utility model relates to an air supply line technical field, in particular to gas chromatograph air supply line.
Background
The gas chromatograph is a chromatographic analysis device using gas as a mobile phase, and the principle of the gas chromatograph is to separate a mixture mainly by using differences in boiling point, polarity and adsorption properties of substances. After being gasified in the gasification chamber, the sample to be analyzed is carried into the chromatographic column by inert gas (i.e. carrier gas, also called mobile phase), the column contains liquid or solid stationary phase, and each component in the sample tends to form distribution or adsorption equilibrium between the mobile phase and the stationary phase. With the flowing of the carrier gas, the sample components are repeatedly distributed or adsorbed/desorbed in the movement for many times, the components with high distribution concentration in the carrier gas flow out of the chromatographic column firstly, the components with high distribution concentration in the stationary phase flow out of the chromatographic column, and the components flow out of the chromatographic column and enter the detector for measurement. The gas source device is required to provide a stable and reliable gas flow to maintain the gas chromatograph in normal operation.
In the prior factory, an air source device is used for supplying air to a gas chromatograph, and a hard-connected pipeline is adopted. When the air supply device breaks down or the air supply is insufficient, other air supply devices cannot be replaced or supplemented, the corresponding gas chromatograph cannot be normally used due to insufficient air supply, and the working efficiency is greatly influenced.
Therefore, it is necessary to develop a new gas supply line to avoid the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a gas chromatograph air supply line can guarantee the gaseous stable output of mobile phase, prevents that gas chromatograph from because of the not enough bring to rest of air feed.
The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides a gas chromatograph air supply line, includes the main trachea, connects in parallel in a plurality of air supply unit of main trachea entrance point and connects in parallel in a plurality of gas chromatograph of main trachea exit end, be equipped with the main valve on the main trachea, all be equipped with an air inlet stop valve on every branch of main trachea connection air supply unit, all be equipped with the stop valve of giving vent to anger on every branch of main trachea connection gas chromatograph.
Specifically, a main valve is arranged on the main gas pipe.
Specifically, the number ratio of the gas source device to the gas chromatograph in the gas supply pipeline is 2: 1-1: 1.
Specifically, all the air inlet stop valves and all the air outlet stop valves are controlled by a controller, and an air pressure sensor for transmitting pressure signals to the controller is arranged between each air source device and the corresponding air inlet stop valve.
Furthermore, each air source device is provided with a signal lamp controlled by the controller; when the air pressure at the outlet of the air source device is normal, the signal lamp is green; when the air pressure at the outlet of the air source device is abnormal, the signal lamp shows red.
Adopt above-mentioned technical scheme, the utility model discloses technical scheme's beneficial effect is:
the gas supply pipeline can supply gas to a plurality of gas chromatographs by using a plurality of gas source devices, thereby reducing the risk that the gas chromatographs cannot work due to insufficient gas supply of individual gas source devices.
Drawings
FIG. 1 is a schematic diagram of a gas chromatograph gas supply line according to an embodiment.
The figures in the drawings represent:
1-main gas pipe, 11-main valve;
21-an air source device, 22-an air inlet stop valve, 23-an air pressure sensor and 24-a signal lamp;
31-gas chromatograph, 32-gas outlet stop valve;
4-a controller.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example (b):
as shown in fig. 1, the utility model discloses a gas chromatograph air supply line, including main trachea 1, connect in parallel in a plurality of air supply unit 21 of main trachea 1 entrance point and connect in parallel in a plurality of gas chromatograph 31 of main trachea 1 exit end, all be equipped with an air inlet stop valve 22 on every branch of main trachea 1 connection air supply unit 21, all be equipped with the stop valve 32 of giving vent to anger on every branch of main trachea 1 connection gas chromatograph 31. The gas source device 21 may be a hydrogen gas generator, a nitrogen gas tank, an inert gas storage tank, or the like. The intake cut-off valve 22 and the exhaust cut-off valve 32 may be manual valves, electric valves, pneumatic valves, or the like. This air supply line can carry out the air feed to a plurality of gas chromatograph 31 with a plurality of air supply unit 21, and the ratio between them is controlled in a flexible way to opening and close through the stop valve 22 of admitting air and the stop valve 32 of giving vent to anger, also can open other air supply unit 21 and carry out the scene switching if there is air supply unit 21 unusual, has reduced individual air supply unit 21 air feed and has not enough made the risk that gas chromatograph 31 can't work.
As shown in fig. 1, the main gas pipe 1 is provided with a main valve 11. When the whole circuit is not working, it can be shut off by means of the main valve 11.
As shown in FIG. 1, the number ratio of the gas source device 21 and the gas chromatograph 31 in the gas supply pipeline is 2:1 to 1: 1. Since there is at least one gas source device 21 as a backup, the number of gas source devices 21 must be higher than the number of gas chromatographs 31, and in order to ensure that each gas chromatograph 31 can be used normally under any circumstances, each gas chromatograph 31 can correspond to at most one working gas source device 21 and one backup gas source device 21.
As shown in fig. 1, all the inlet shutoff valves 22 and all the outlet shutoff valves 32 are solenoid valves controlled by the controller 4, and an air pressure sensor 23 that transmits a pressure signal to the controller 4 is provided between each air supply device 21 and the corresponding inlet shutoff valve 22. The opening and closing of the air inlet stop valve 22 and the air outlet stop valve 32 are controlled by the controller 4 in a coordinated manner, meanwhile, the air pressure sensor 23 can find whether the corresponding air source device 21 has abnormal pressure or not in time, and the controller 4 is used for carrying out field control, so that the manpower required by a control pipeline is reduced.
As shown in fig. 1, each air supply device 21 is provided with a signal lamp 24 controlled by the controller 4; when the air pressure at the outlet of the air source device 21 is normal, the signal lamp 24 is green; when the air pressure at the outlet of the air source device 21 is abnormal, the signal lamp 24 shows red. When the air pressure sensor 23 senses the outlet pressure of the air source device 21, the on-off state can be switched by the air inlet stop valve 22, the normal work of a pipeline is guaranteed, the signal lamp 24 can also perform visual feedback on a detection result, and the field workers are reminded of timely eliminating abnormity.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (5)
1. A gas chromatograph gas supply line which is characterized in that: including main trachea, parallelly connected in a plurality of air supply unit of main trachea entrance point and parallelly connected in a plurality of gas chromatograph of main trachea exit end, all be equipped with an air inlet stop valve on every branch way of main trachea connection air supply unit, all be equipped with the stop valve of giving vent to anger on every branch way of main trachea connection gas chromatograph.
2. Gas chromatograph gas supply line according to claim 1, characterized in that: and a main valve is arranged on the main gas pipe.
3. Gas chromatograph gas supply line according to claim 1, characterized in that: the number ratio of the gas source devices in the gas supply pipeline to the gas chromatograph is 2: 1-1: 1.
4. Gas chromatograph gas supply line according to claim 1, characterized in that: all air inlet stop valves and all air outlet stop valves are electromagnetic valves controlled by a controller, and an air pressure sensor for transmitting pressure signals to the controller is arranged between each air source device and the corresponding air inlet stop valve.
5. Gas chromatograph gas supply line according to claim 4, characterized in that: each air source device is provided with a signal lamp controlled by a controller; when the air pressure at the outlet of the air source device is normal, the signal lamp is green; when the air pressure at the outlet of the air source device is abnormal, the signal lamp shows red.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021161059.6U CN213040315U (en) | 2020-06-22 | 2020-06-22 | Gas chromatograph gas supply line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021161059.6U CN213040315U (en) | 2020-06-22 | 2020-06-22 | Gas chromatograph gas supply line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213040315U true CN213040315U (en) | 2021-04-23 |
Family
ID=75522757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021161059.6U Expired - Fee Related CN213040315U (en) | 2020-06-22 | 2020-06-22 | Gas chromatograph gas supply line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213040315U (en) |
-
2020
- 2020-06-22 CN CN202021161059.6U patent/CN213040315U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210423 Termination date: 20210622 |