CN202267671U - Gas chromatograph gas sample introduction apparatus - Google Patents
Gas chromatograph gas sample introduction apparatus Download PDFInfo
- Publication number
- CN202267671U CN202267671U CN2011201575722U CN201120157572U CN202267671U CN 202267671 U CN202267671 U CN 202267671U CN 2011201575722 U CN2011201575722 U CN 2011201575722U CN 201120157572 U CN201120157572 U CN 201120157572U CN 202267671 U CN202267671 U CN 202267671U
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- CN
- China
- Prior art keywords
- gas
- sample
- solenoid valve
- sample introduction
- gas chromatograph
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a gas chromatograph gas sample introduction apparatus, which applies a solenoid valve to complete the air passage connection and switching between sample introduction apparatuses, and a six-way valve or ten-way valve machinery transfer valve is not used. The apparatus is convenient for connection to computer, thereby completing automatic introduction of gas chromatograph sample gas.
Description
Technical field
The utility model relates to a kind of gas sample injection device of gas chromatograph in the analytical and testing instrument field, and the effect of this device is that gas to be analyzed is imported in the gas chromatograph chromatographic column.
Background technology
At present, known gas chromatograph gas sample injection device is to be main to constitute by six direction changeover valves, and this gas sample injection device is pulled the handle rotation through manual work, between sample and sample introduction state, switches.Its shortcoming one is to need accurate six-way valve, and another is unfavorable for robotization exactly.By system controlled by computer sampling and sample introduction, need add drive unit if desired, like motor, rotary cylinder etc., complex structure.
Summary of the invention
The utility model provides a kind of gas chromatograph gas sample injection device, and it quantitatively imports sample gas in the gas chromatographic column through quantity tube, it is characterized in that only utilizing solenoid valve to accomplish connection and switching between quantity tube and the gas circuit.This device does not use six direction changeover valves, especially is convenient to be connected with computing machine, is beneficial to the realization auto injection.
The concrete technical scheme that the utility model is taked is: adopt three two-position three way magnetic valves, this solenoid valve working pressure and sealing should be able to satisfy the gas circuit requirement of gas chromatograph.Interconnected relationship and the channel status of three solenoid valve "on" positions and the interconnected relationship that each parts of gas chromatograph gas sample injection device sample introduction position should form that should form according to channel status and each parts of gas chromatograph gas sample injection device sample position of three solenoid valve off-positions; Take all factors into consideration; Form connection layout; Satisfy the solenoid valve energising and be the sample introduction state, cutting off the power supply is the connection of sample.Also can be the sample introduction state, switch on and design connection layout into sample connects by outage.
The beneficial effect of the utility model is: do not use six direction changeover valves or ten direction changeover valves, and is easy to be connected, need not increase driver part, can form the automatic gas sampling device with computing machine, and simple in structure.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Accompanying drawing is the gas sampler connection layout
1. air intake openings among the figure, 2. solenoid valve A, 3. quantity tube, 4. solenoid valve B, 5. solenoid valve C, 6. sample gas sample tap, 7. sample gas drain, 8. gas chromatographic column.
Embodiment
Among the figure, the solid line state forms the sample of gas sampler among solenoid valve A (2), solenoid valve B (4), the solenoid valve C (5), and the dotted line state forms the sample introduction state of gas sampler.Be in the solid line state during three solenoid valve outages, be in the dotted line state during energising.When outage, sample gas is through sample gas sample tap (6), and solenoid valve B (4), quantity tube (3), solenoid valve C (5), sample gas drain (7) form sampling loop, and sample gas is full of quantity tube (3).Carrier gas gets in the gas chromatographic column (8) through air intake opening (1), solenoid valve A (2).After three solenoid valve energisings, switch to the dotted line state, sample gas drives through carrier gas in the quantity tube (3), gets in the gas chromatographic column (8) through solenoid valve C (5), accomplishes gas sampling.In the present embodiment, solenoid valve adopts model to be: VK332Y-5G-M5, its working pressure range are 0～0.7MPa, the 24VDC power supply.Quantity tube (3) is the 2ml quantity tube.Three solenoid valves are controlled with a microcomputer switching value.When control signal was level "0", three solenoid valve outages were in the sample position.During this period, in sample gas sample tap (6), be pressed into sample gas with the sample air bag.Instruct when microcomputer sends sample introduction, control signal becomes level"1", and solenoid valve is cut to the sample introduction state, and level"1" was kept 10 seconds.During this period, sample gas is brought in the gas chromatographic column (8) by carrier gas.After level"1" is kept 10 seconds, get back to level "0" automatically, solenoid valve is all got back to sample, has accomplished a sample introduction cycle.
Claims (1)
1. gas chromatograph gas sample injection device, it quantitatively imports sample gas in the gas chromatographic column through quantity tube, it is characterized in that only utilizing solenoid valve to accomplish connection and switching between quantity tube and the gas circuit, and does not use six logical or ten logical mechanical transfer valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201575722U CN202267671U (en) | 2011-05-10 | 2011-05-10 | Gas chromatograph gas sample introduction apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201575722U CN202267671U (en) | 2011-05-10 | 2011-05-10 | Gas chromatograph gas sample introduction apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202267671U true CN202267671U (en) | 2012-06-06 |
Family
ID=46158460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201575722U Expired - Fee Related CN202267671U (en) | 2011-05-10 | 2011-05-10 | Gas chromatograph gas sample introduction apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202267671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700566A (en) * | 2013-12-10 | 2014-04-02 | 苏州大学 | Device and method for quantitatively supplying cushion gas to ion trap mass spectrometer |
-
2011
- 2011-05-10 CN CN2011201575722U patent/CN202267671U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700566A (en) * | 2013-12-10 | 2014-04-02 | 苏州大学 | Device and method for quantitatively supplying cushion gas to ion trap mass spectrometer |
| CN103700566B (en) * | 2013-12-10 | 2016-04-20 | 苏州大学 | A kind of is the apparatus and method of ion trap mass spectrometer weight feed cushion gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20130510 |