CN2281538Y - Gas chromatographic sample filler - Google Patents
Gas chromatographic sample filler Download PDFInfo
- Publication number
- CN2281538Y CN2281538Y CN 97201315 CN97201315U CN2281538Y CN 2281538 Y CN2281538 Y CN 2281538Y CN 97201315 CN97201315 CN 97201315 CN 97201315 U CN97201315 U CN 97201315U CN 2281538 Y CN2281538 Y CN 2281538Y
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- sample
- perfusor
- utility
- model
- slit
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Abstract
The utility model relates to a novel gas chromatographic sample filler, particularly being suitable for the non split-flow sample filling of large-caliber capillary columns, and the utility model can also be used for the sample filling of general filling columns. The utility model causes the inner hole of a lining pipe inside a sample filler body to separate from the sample filler body on one end of the sample filling space of the sample filler, and the inner hole is separated from the sample filler body by a slit or micro-hole or single powder pad. The sample filler of the utility model can eliminate a dead volume existing in the prior art, a sample forms a plug shape to enter a chromatographic column under the drive of supporting gas after the sample is instantly vaporized, and therefore, the utility model can measure the accurate separation, definite quality and definite quantity of the sample. The utility model has simple structure, easy process, convenient processing and low cost.
Description
The utility model belongs to the instrument part field, definitely says, the utility model relates to a kind of novel gas chromatography perfusor, and what this perfusor was specially adapted to wide bore capillary column is regardless of the streamer sample, also can be used for general packed column and annotates sample.
In the prior art, at sampling injecting space (space that syringe needle an entered) end of perfusor,, thereby cause perfusor that very big dead volume is arranged usually owing to bushing pipe endoporus and very unobstructed the fusing of perfusor body in the perfusor body.The shortcoming that this dead volume is directed at is: instant vaporization after sample (particularly fluid sample) injects, produce very big pressure, and sample is filled the air in the whole perfusor body.Because can not being the plug shapes, the existence of dead volume, sample enter chromatographic column.Therefore, directly influence chromatographic separation degree, poor repeatability, the error that has been directed at qualitative, quantitative test is big, the accuracy of impact analysis.
For overcoming the above-mentioned shortcoming that exists in the prior art, the purpose of this utility model just is to provide a kind of novel gas chromatography perfusor, so that eliminate the dead volume of perfusor sampling injecting space one end, realize sample when instant vaporization under the promotion of nebulizer gas pressure sample can form the plug shape and enter chromatographic column.Thereby finish to sample separate accurately, analysis, qualitative, paced work.
The purpose of this utility model is to be achieved by following technical proposals.Promptly the bushing pipe endoporus in the perfusor body is separated with the perfusor body at perfusor sampling injecting space one end.For this reason, slit can make bushing pipe endoporus and perfusor body separate; Micropore also can make it separately; Also can make it separately with the dusty material pad of porous.Above-mentioned slit can be perpendicular to the pressure cap end face; It also can be parallel pressure cap end face; Can also be to become arbitrarily angled with the pressure cap end face.Specifically, this novel gas chromatography perfusor comprises perfusor cap (1), annotates sample pad (2), pressure cap (4), sealing gasket (5), bushing pipe (6), perfusor (7), column joint nut (8), column sealing pad (9), chromatographic column (10) is characterized in that: have slit (3) between bushing pipe endoporus and perfusor body, this slit (3) is perpendicular to the pressure cap end face; Have micropore between bushing pipe endoporus and perfusor body, the sectional area of micropore is A=0.001-0.2mm
2, the quantity of micropore is 1-n; Also can have the dusty material pad of porous between bushing pipe endoporus and perfusor body, this mat thickness is 0.3-3mm.Above-mentioned slit (3) also can be to be parallel to the pressure cap end face.Slit (3) also can become arbitrarily angled with the pressure cap end face.The end face of described bushing pipe (6) and pressure cap (4) have sealing gasket (11).Described slit (3) is at the slit area A=0.001-0.2mm perpendicular to carrier gas direction of motion
2, slot number N=1-n bar.
The independent dusty material pad of above-mentioned porous can adopt any exotic material to make, stainless steel powder powder material preferably, and the thickness of its pad is h=0.3-3mm; Diameter is determined according to perfusor body internal diameter.
Implement the outstanding advantage of the utility model simple in structure, easy to process, with low cost.
Below in conjunction with accompanying drawing and slit embodiment, specifically illustrate structure of the present utility model.(the enforcement illustration of micropore and dusty material pad is omitted)
Accompanying drawing is the utility model slit example structure sectional view.Wherein 1 is the perfusor cap, and 2 for annotating the sample pad, and 3 is slit, and 4 is pressure cap, and 5 is sealing gasket, and 6 is bushing pipe, and 7 is the perfusor body, and 8 is the column joint nut, and 9 is the column sealing pad, and 10 is chromatographic column, and 11 is spring, and 12 is sealing gasket.
Perfusor cap (1) and perfusor body (7) are annotated sample pads (2) and are compressed between pressure cap (4) and the perfusor cap (1) by being threaded, thereby realize in the perfusor body (7) and the sealing in the external world.
Pressure cap (4) and perfusor body (7) be by being threaded, thereby realize that compressing sealing gasket (5) connects together bushing pipe (6) with perfusor body (7), and carrier gas can only enter sampling injecting space by the slit (3) on pressure cap (4) end face.Slit (3) can be made micropore, also independent dusty material pad, and the endoporus of pressure cap (4) communicates with the endoporus of bushing pipe (6), and the end face of bushing pipe (6) and pressure cap (4) partly usefulness sealing gasket (12) seal.
Column joint nut (8) and perfusor body (7) be by being threaded, thereby realize that hold-down column sealing gasket (9) connects together chromatographic column (10) with perfusor body (7) and bushing pipe (6), and chromatographic column (10) end face seals with the requirement of bushing pipe (6) endoporus.
Among the figure, A is that carrier gas enters the hole, and B is the sample filling orifice.Carrier gas enters the space of the notes sample of perfusor by slit (or micropore or dusty material pad).Because carrier gas is subjected to certain resistance by slit the time,, under the promotion of carrier gas, can only forms the plug shape and enter chromatographic column to making the sample that injects from the B end when the instant vaporization.Thereby finish detachment process accurately, realize qualitative, quantitative accurately analysis sample.
Claims (5)
1. one kind by perfusor cap (1), annotates sample pad (2), pressure cap (4), and sealing gasket (5), bushing pipe (6), perfusor body (7), column joint nut (8), column sealing pad (9), the gas chromatography perfusor that chromatographic column (10) is constituted is characterized in that:
A. have slit (3) between bushing pipe endoporus and perfusor body, this slit (3) is perpendicular to the pressure cap end face,
B. have micropore between bushing pipe endoporus and perfusor body, the sectional area of micropore is A=0.001-0.2mm
2, the quantity of micropore is 1-n,
C. have independent dusty material pad between bushing pipe endoporus and perfusor body, this mat thickness is 0.3-3mm.
2. gas chromatography perfusor according to claim 1 is characterized in that described slit (3) is to be parallel to the pressure cap end face.
3. gas chromatography perfusor according to claim 1 is characterized in that described slit (3) can become arbitrarily angled with the pressure cap end face.
4. gas chromatography perfusor according to claim 1 is characterized in that the end face of described bushing pipe (6) and pressure cap (4) have sealing gasket (11).
5. gas chromatography perfusor according to claim 1 is characterized in that described slit (3) is at the slit area A=0.001-0.2mm perpendicular to carrier gas direction of motion
2, slot number N=1-n bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97201315 CN2281538Y (en) | 1997-02-17 | 1997-02-17 | Gas chromatographic sample filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97201315 CN2281538Y (en) | 1997-02-17 | 1997-02-17 | Gas chromatographic sample filler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2281538Y true CN2281538Y (en) | 1998-05-13 |
Family
ID=33922768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97201315 Expired - Fee Related CN2281538Y (en) | 1997-02-17 | 1997-02-17 | Gas chromatographic sample filler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2281538Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359993A (en) * | 2011-09-23 | 2012-02-22 | 聚光科技(杭州)股份有限公司 | Composite sample inlet |
| CN108152433A (en) * | 2017-12-25 | 2018-06-12 | 佛山市中环环境检测中心 | A kind of gas chromatograph high temperature sampling device and with its gas chromatograph |
| CN115791322A (en) * | 2022-10-14 | 2023-03-14 | 中国计量科学研究院 | Dead volume-free gravimetric method gas distribution injection port connector |
-
1997
- 1997-02-17 CN CN 97201315 patent/CN2281538Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359993A (en) * | 2011-09-23 | 2012-02-22 | 聚光科技(杭州)股份有限公司 | Composite sample inlet |
| CN108152433A (en) * | 2017-12-25 | 2018-06-12 | 佛山市中环环境检测中心 | A kind of gas chromatograph high temperature sampling device and with its gas chromatograph |
| CN108152433B (en) * | 2017-12-25 | 2020-09-11 | 北京高麦克仪器科技有限公司 | Gas chromatograph high temperature sampling device and gas chromatograph who has it |
| CN115791322A (en) * | 2022-10-14 | 2023-03-14 | 中国计量科学研究院 | Dead volume-free gravimetric method gas distribution injection port connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |