CN203299179U - Chromatograph sample injection system - Google Patents
Chromatograph sample injection system Download PDFInfo
- Publication number
- CN203299179U CN203299179U CN2013203269218U CN201320326921U CN203299179U CN 203299179 U CN203299179 U CN 203299179U CN 2013203269218 U CN2013203269218 U CN 2013203269218U CN 201320326921 U CN201320326921 U CN 201320326921U CN 203299179 U CN203299179 U CN 203299179U
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- sample
- chromatograph
- pipe
- spiral pipe
- spiral
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Abstract
The utility model relates to a sample injection system of a chromatograph. The sample injection system comprises a sample storage device, a spiral pipe and a chromatograph sample inlet, wherein the spiral pipe comprises a first end, a second end and a spiral part between the first end and the second end; the first end is in sealed connection with a sample outlet of the sample storage device; the second end is in sealed connection with the chromatograph sample inlet. The sample injection system of the chromatograph can completely gasify light hydrocarbon by virtue of the spiral pipe, and is simple in structure and convenient to operate; because the spiral pipe has a relatively long stroke and high damping, the gas flow is stable after the gasification of a sample, and then the sample can uniformly enter the chromatograph to improve the reproducibility of analysis.
Description
Technical field
The utility model relates to the chromatograph sampling system, relates in particular to a kind of sampling system of chromatograph for lighter hydrocarbons.
Background technology
In the middle of coal-based alkene project MTP technique processed, in production run, its main material is hydrocarbons, and it can be divided into lighter hydrocarbons (C4 and following) and heavy hydrocarbon according to the difference of its proportion.When using gas chromatograph to detect above-mentioned hydrocarbons, hydrocarbons is gasified totally with the chromatograph that enters of the form of gas, for example adopt sample introduction after flash evaporator heating and gasifying sample.But when heavy hydrocarbon was detected, its flash distillation in flash evaporator was incomplete, and residual phenomenon is arranged; For lighter hydrocarbons, the flash evaporator dead volume is excessive, and the analysis of residual heavy hydrocarbon and air impact lighter hydrocarbons, and sample component skewness are quantitatively accurate not.
The utility model content
The purpose of this utility model is to provide a kind of chromatograph sampling system, sample component skewness during with solution lighter hydrocarbons sample introduction, quantitatively accurate not problem.
For achieving the above object, the utility model is by the following technical solutions:
A kind of chromatograph sampling system, comprise sample reservoir, spiral pipe and injection port of chromatograph, described spiral pipe comprises first end, the second end and the spiral fashion part between described first end and the second end, the sample export of described first end and described sample reservoir is tightly connected, and described the second end and injection port of chromatograph are tightly connected.
According to feed system of the present utility model, preferably, the bore of described spiral pipe is 1-4mm, and thickness of pipe is 0.5-2mm; The spiral external diameter of described spiral fashion part is 4-6cm, and pitch is 1-3mm.
According to feed system of the present utility model, preferably, the bore of described spiral pipe is 1-3mm, and thickness of pipe is 1-2mm; The spiral external diameter of described spiral fashion part is 4.5-6cm, and pitch is 1-2.5mm.
According to feed system of the present utility model, preferably, the bore of described spiral pipe is 2-3mm, and thickness of pipe is 1-1.5mm; The spiral external diameter of described spiral fashion part is 4.5-5.5cm, and pitch is 1.5-2mm.
According to feed system of the present utility model, preferably, being tightly connected between the sample export of described first end and described sample reservoir is connected for the cutting ferrule nut.
According to feed system of the present utility model, preferably, being tightly connected between described the second end and described injection port of chromatograph is connected for the cutting ferrule nut.
According to feed system of the present utility model, preferably, described spiral pipe is copper pipe or stainless-steel tube.
Compared with prior art, this utility model has the following advantages:
(1) the utility model utilizes spiral pipe that lighter hydrocarbons are gasified totally, and is simple in structure, easy to operate;
(2) because spiral pipe has larger stroke and damping, use spiral pipe to make gas flow stable, analyze data reappearance good.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of sampling system of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, further describe the chromatograph sampling system of lighter hydrocarbons provided by the utility model, but therefore the utility model is not subject to any restriction.In literary composition, " spiral pipe " refers to pipe turned to the spiral pipe that obtains after spiral fashion.
As shown in Figure 1, the chromatograph sampling system that provides of the present utility model comprises sample reservoir 1, spiral pipe 2 and injection port of chromatograph 31.Described spiral pipe 2 comprises first end 21, the second end 22 and the spiral fashion part 23 between first end and the second end, the first end 21 of described spiral pipe 2 is tightly connected with the sample export 11 of described sample reservoir 1, the second end 22 and the injection port 31 of described chromatograph 3 of described spiral pipe 2 are tightly connected, so that the sample in described sample reservoir 1 can enter in described chromatograph 3 by spiral pipe 2.
Wherein, the straight length of described spiral pipe 2 (being the straight length of spiral pipe 2 before being prepared to spiral fashion) can suitably be regulated according to the gasification degree of sample in pipe, and the sample that assurance enters described chromatograph 3 is gasified totally and gets final product.
In the utility model, the bore of described spiral pipe 2 (internal diameter of helically wound pipe) and pipe external diameter (external diameter of helically wound pipe) needn't arrange excessive. preferably, the bore of described spiral pipe 2 is 1-4mm, and more preferably 1-3mm, further be preferably 2-3mm.Preferably, the thickness of pipe of described spiral pipe 2 is 0.5-2mm, and more preferably 1-2mm, further be preferably 1-1.5mm, so as the sample gas in described spiral pipe 2 can with external environment heat exchange better.
In order to obtain suitable damping, described spiral pipe 2 can also be selected suitable spiral external diameter (external diameter of the spiral fashion part 23 of described spiral pipe 2) and pitch.In the utility model, preferably, the spiral external diameter of described spiral fashion part 23 is 4-6cm, and more preferably 4.5-6cm, further be preferably 4.5-5.5cm.The pitch of described spiral fashion part 23 is preferably 1-3cm, and more preferably 1-2.5cm, further be preferably 1.5-2cm.
The material of described spiral pipe 2 there is no particular restriction, can be suitable for lighter hydrocarbons conveying and heat conduction and well get final product.Preferably, described spiral pipe 2 is copper pipe or stainless-steel tube.
Being tightly connected between the sample export 11 of described first end 21 and described sample reservoir 1 is preferably the cutting ferrule nut and is connected; Being tightly connected between the injection port 31 of described spiral pipe 2 and described chromatograph 3 is preferably the cutting ferrule nut and is connected, and in sealing, also is convenient to dismounting.Further, when the interface between described spiral pipe 2 and described sample export 11 and injection port of chromatograph 31 does not mate, junction between described spiral pipe 2 and described sample export 11 or described spiral pipe 2 and injection port of chromatograph 31 can also arrange adapter, the setting of described adapter be connected to known in the artly, no longer describe in detail here.
The utility model adopts spiral pipe 2 chargings, owing to being helical structure, described spiral pipe can have larger straight length in limited range of size, from the lighter hydrocarbons of sample reservoir 1, during by spiral pipe 2, increased its hold-up time in described spiral pipe 2.In addition, because the lighter hydrocarbons boiling point is low, thereby can fully contact gasification with external environment, increase gasification efficiency; Because spiral pipe 2 has larger stroke and damping, make the rear steady air current of sample gasification simultaneously, thereby can improve the reappearance of analyzing so that sample enters chromatograph 3 equably, prevent the chromatographic column overload, pollute.
Above-described embodiment is only for illustration of the utility model; but not be to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the prerequisite that does not break away from spirit and scope of the present utility model; can also make a variety of changes and be out of shape; therefore the technical scheme that is equal to used also should belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (7)
1. chromatograph sampling system, it is characterized in that, comprise sample reservoir, spiral pipe and injection port of chromatograph, described spiral pipe comprises first end, the second end and the spiral fashion part between described first end and the second end, the sample export of described first end and described sample reservoir is tightly connected, and described the second end and injection port of chromatograph are tightly connected.
2. sampling system as claimed in claim 1, is characterized in that, the bore of described spiral pipe is 1-4mm, and thickness of pipe is 0.5-2mm; The spiral external diameter of described spiral fashion part is 4-6cm, and pitch is 1-3mm.
3. sampling system as claimed in claim 2, is characterized in that, the bore of described spiral pipe is 1-3mm, and thickness of pipe is 1-2mm; The spiral external diameter of described spiral fashion part is 4.5-6cm, and pitch is 1-2.5mm.
4. sampling system as claimed in claim 3, is characterized in that, the bore of described spiral pipe is 2-3mm, and thickness of pipe is 1-1.5mm; The spiral external diameter of described spiral fashion part is 4.5-5.5cm, and pitch is 1.5-2mm.
5. sampling system as described as any one in claim 1-4, is characterized in that, being tightly connected between the sample export of described first end and described sample reservoir is connected for the cutting ferrule nut.
6. sampling system as described as any one in claim 1-4, is characterized in that, being tightly connected between described the second end and described injection port of chromatograph is connected for the cutting ferrule nut.
7. sampling system as claimed in claim 1, is characterized in that, described spiral pipe is copper pipe or stainless-steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203269218U CN203299179U (en) | 2013-06-07 | 2013-06-07 | Chromatograph sample injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203269218U CN203299179U (en) | 2013-06-07 | 2013-06-07 | Chromatograph sample injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203299179U true CN203299179U (en) | 2013-11-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203269218U Expired - Lifetime CN203299179U (en) | 2013-06-07 | 2013-06-07 | Chromatograph sample injection system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203299179U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092317A (en) * | 2015-08-12 | 2015-11-25 | 苏州优谱德精密仪器科技有限公司 | Method for detecting components of liquefied petroleum gas |
| CN109839425A (en) * | 2017-11-27 | 2019-06-04 | 中国科学院大连化学物理研究所 | A kind of on-line mass spectroscopy sampling sample introduction integrated apparatus for quick humidity regulation |
| CN116672916A (en) * | 2023-07-28 | 2023-09-01 | 北京凯莱谱生物科技有限公司 | Chromatograph with mixed wave reduction device and detection method thereof |
-
2013
- 2013-06-07 CN CN2013203269218U patent/CN203299179U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092317A (en) * | 2015-08-12 | 2015-11-25 | 苏州优谱德精密仪器科技有限公司 | Method for detecting components of liquefied petroleum gas |
| CN109839425A (en) * | 2017-11-27 | 2019-06-04 | 中国科学院大连化学物理研究所 | A kind of on-line mass spectroscopy sampling sample introduction integrated apparatus for quick humidity regulation |
| CN116672916A (en) * | 2023-07-28 | 2023-09-01 | 北京凯莱谱生物科技有限公司 | Chromatograph with mixed wave reduction device and detection method thereof |
| CN116672916B (en) * | 2023-07-28 | 2023-11-17 | 北京凯莱谱生物科技有限公司 | Chromatograph with mixed wave reduction device and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |