CN203376296U - Sampling fixing device of gas chromatograph - Google Patents
Sampling fixing device of gas chromatograph Download PDFInfo
- Publication number
- CN203376296U CN203376296U CN201320476545.0U CN201320476545U CN203376296U CN 203376296 U CN203376296 U CN 203376296U CN 201320476545 U CN201320476545 U CN 201320476545U CN 203376296 U CN203376296 U CN 203376296U
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- sampling
- stationary installation
- sample introduction
- gas chromatograph
- fixing device
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Abstract
The utility model discloses a sampling fixing device of a gas chromatograph. The sampling fixing device of the gas chromatograph comprises a headspace sampling device and a chromatographic column device. The headspace sampling device comprises a sampling needle and a sampling pipeline, wherein one end of the sampling pipeline is connected with the headspace sampling device, and the other end of the sampling pipeline is connected with the sampling needle. A fixing device is inserted in a sampling port of the chromatographic column device, the sampling pipeline is arranged in the fixing device in a sleeved mode and fixed at the sampling port, the inner diameter of an upper end port of the fixing device is slightly larger than the inner diameter of a lower end port of the fixing device, and a sealing ring is arranged on the outer surface, near the sampling port, of the fixing device in a sleeved mode. The sampling fixing device of the gas chromatograph has the advantages of being simple in structure, easy and convenient to operate, good in sealing performance and low in use cost.
Description
Technical field
The utility model belongs to technical field of chromatographic analysis, is specifically related to a kind of gas chromatograph sampling stationary installation.
Background technology
Chromatograph is that the application chromatography is carried out qualitative and quantitative analysis to material, and studies the physics of material, the instrument of chemical characteristic, at chemical industry, living work, Majors of Food, does Experiment of Instrumental Analysis, also can be used for scientific research and conventional analysis.The problem of bending easily occurs at injection port for the sample introduction needle occurred in the chromatograph course of work, Granted publication number discloses a kind of holder device for the liquid chromatography sample introduction for the utility model patent of CN 202814938 U: between the inside and outside two-layer sleeve pipe matched with sample introduction needle, slidably be connected, inside and outside sleeve pipe is equipped with duct and forward and backward stop means, and outer tube is provided with the sample introduction needle stationary installation.During use, inner sleeve is fixed on by the screw thread adjustable ground on the needle body of sample introduction needle, and outer tube carries out the relative fixing of position with the shank of sample introduction needle, and by mutually sliding by chute and inner sleeve, and be provided with slipmat above inner-outer sleeve.Avoided the easy problem bent of sample introduction needle occurred in the sample introduction process by this holder device.
Although above-mentioned holder device has solved the problem of sample introduction needle bending,, the parts that this holder device comprises are more, complex structure, cooperation between each parts requires also higher, and the complex manufacturing technology of parts own, causes chromatograph complicated operation and use cost high.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of simple in structure, easy and simple to handle, good airproof performance, gas chromatograph sampling stationary installation that use cost is low.
For addressing the above problem, the utility model provides a kind of gas chromatograph sampling stationary installation, comprise headspace sampling device, chromatographic column device, the headspace sampling device comprises sample introduction needle, sample introduction pipeline, and an end of sample introduction pipeline connects the headspace sampling device, and an end connects sample introduction needle, it is characterized in that, described chromatographic column device injection port place is inserted with stationary installation, for the sample introduction pipeline, is inserted in and is fixed in the injection port place, and this stationary installation upper port internal diameter is a bit larger tham the lower port internal diameter.The outside surface of this stationary installation is near the sheathed O-ring seal in injection port place.
The upper port internal diameter of this stationary installation is a bit larger tham the lower port internal diameter, can make stationary installation be inserted in securely in injection port, is difficult for slipping into injection port.And then, effectively avoided the sample introduction pipeline to skew at the injection port place, make to stretch into the sample introduction needle bending in injection port.
Preferably, the vertical section of this stationary installation is for falling isosceles trapezoid.
Preferably, the vertical section of this stationary installation is approximate convex shape.
The beneficial effects of the utility model are: because sample introduction needle is thinner, be difficult to bear the weight of sample introduction pipeline, the sample introduction pipeline can skew at the injection port place, causes the sample introduction needle bending in injection port.Gas chromatograph of the present utility model, by stationary installation, is inserted in the sample introduction pipeline and it firmly is fixed on to injection port, has avoided above-mentioned sample introduction pipeline to skew and the situation of sample introduction needle bending occurs.Simultaneously, the outer sheathed O-ring seal of stationary installation can guarantee the sealing in the sample introduction process further, prevents that gas leakage or other impurity from entering chromatographic column from injection port, improved the accuracy of gas chromatograph testing result.
The accompanying drawing explanation
The perspective view that Fig. 1 is the utility model gas chromatograph sampling stationary installation.
The use constitutional diagram that Fig. 2 is the utility model gas chromatograph sampling stationary installation.
Fig. 3 is the stereographic map that the utility model gas chromatograph sampling stationary installation adds O-ring seal.
Embodiment
Below in conjunction with accompanying drawing, structure of the present utility model is explained in detail to explanation.
As Fig. 1, Fig. 2, shown in Fig. 3, the gas chromatograph sampling stationary installation, comprise headspace sampling device (not indicating in figure), chromatographic column device 5, the headspace sampling device comprises sample introduction needle 3, sample introduction pipeline 2, one end of sample introduction pipeline 2 connects the headspace sampling device, for sampling, one end connects sample introduction needle 3, for the sample extracted is sent into to chromatographic column device 5 by injection port 4, described chromatographic column device 5 injection port 4 places are inserted with integrated vertical section for falling the fixed leg 1 of isosceles trapezoid, be inserted in and be fixed in injection port 4 places for sample introduction pipeline 2, upper port 11 internal diameters of this fixed leg 1 are a bit larger tham lower port 12 internal diameters.The internal diameter of the upper port 11 of fixed leg 1 changes with the caliber of sample introduction pipeline 2 is different; can make seamless unoccupied place, sample feeding pipe road 2 be inserted in fixed leg 1; equally; the internal diameter of the lower port 12 of fixed leg 1 is also done corresponding variation with the caliber size of injection port 4; can make the seamless unoccupied place of fixed leg 1 be inserted in injection port 4, guarantee better fixedly sample introduction pipeline 2 and then protection sample introduction needle 3, prevent sample introduction needle 3 bendings; can also avoid gas leakage, play better sealing function.
Further, this fixed leg 1 outside surface is near the injection port 4 sheathed O-ring seals 6 in place, both made extraneous gas or impurity be difficult for entering in chromatographic column device 5 via injection port 4 with fixed leg 1, avoided again the gas in chromatographic column device 5 to spill by injection port 4, strengthen the sealing in the sample introduction process, improved the accuracy of gas chromatograph testing result.
In the present embodiment, above-mentioned fixed leg 1 also can replace with the cylinder by two sections different even hollow circular cylinders of bore form, vertical section is similar to convex shape.
The above, be only preferred embodiment of the present utility model, can not limit practical range of the present utility model with this; Therefore, all simple equivalences of doing according to the utility model claim scope and description change and modify, and still belong to the scope that the utility model patent contains.
Claims (4)
1. gas chromatograph sampling stationary installation, comprise headspace sampling device, chromatographic column device (5), the headspace sampling device comprises sample introduction needle (3), sample introduction pipeline (2), one end of sample introduction pipeline (2) connects the headspace sampling device, one end connects sample introduction needle (3), it is characterized in that, described chromatographic column device (5) injection port (4) locates to be inserted with stationary installation (1), be inserted in and be fixed in injection port (4) for sample introduction pipeline (2) and locate, this stationary installation (1) upper port (11) internal diameter is a bit larger tham lower port (12) internal diameter.
2. gas chromatograph sampling stationary installation as claimed in claim 1 is characterized in that: the vertical section of described stationary installation (1) is for falling isosceles trapezoid.
3. gas chromatograph sampling stationary installation as claimed in claim 1 is characterized in that: the vertical section of described stationary installation (1) is the approximate convex shape that falls.
4. gas chromatograph sampling stationary installation as claimed in claim 1 is characterized in that: the outside surface of described stationary installation (1) is located sheathed O-ring seal (6) near injection port (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320476545.0U CN203376296U (en) | 2013-08-06 | 2013-08-06 | Sampling fixing device of gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320476545.0U CN203376296U (en) | 2013-08-06 | 2013-08-06 | Sampling fixing device of gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203376296U true CN203376296U (en) | 2014-01-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320476545.0U Expired - Fee Related CN203376296U (en) | 2013-08-06 | 2013-08-06 | Sampling fixing device of gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203376296U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914197A (en) * | 2015-07-03 | 2015-09-16 | 无锡市稼宝药业有限公司 | Gas chromatograph sample feeder with chromatography capillary tube fixing device |
| CN106153369A (en) * | 2015-03-31 | 2016-11-23 | 沈蓉蓉 | A kind of rotary sampling detecting device |
| CN106770846A (en) * | 2015-11-20 | 2017-05-31 | 株式会社岛津制作所 | For the hand sampling servicing unit of gas chromatograph sampling syringe |
| CN113390995A (en) * | 2021-06-17 | 2021-09-14 | 中国烟草总公司郑州烟草研究院 | Portable gas chromatography ion mobility spectrometry GC-IMS with sample inlet |
-
2013
- 2013-08-06 CN CN201320476545.0U patent/CN203376296U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153369A (en) * | 2015-03-31 | 2016-11-23 | 沈蓉蓉 | A kind of rotary sampling detecting device |
| CN104914197A (en) * | 2015-07-03 | 2015-09-16 | 无锡市稼宝药业有限公司 | Gas chromatograph sample feeder with chromatography capillary tube fixing device |
| CN106770846A (en) * | 2015-11-20 | 2017-05-31 | 株式会社岛津制作所 | For the hand sampling servicing unit of gas chromatograph sampling syringe |
| CN113390995A (en) * | 2021-06-17 | 2021-09-14 | 中国烟草总公司郑州烟草研究院 | Portable gas chromatography ion mobility spectrometry GC-IMS with sample inlet |
| CN113390995B (en) * | 2021-06-17 | 2023-12-26 | 中国烟草总公司郑州烟草研究院 | Portable gas chromatography ion mobility spectrometry GC-IMS with sample inlet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140101 Termination date: 20170806 |