CN206020353U - Gas chromatograph sampling bushing pipe - Google Patents
Gas chromatograph sampling bushing pipe Download PDFInfo
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- CN206020353U CN206020353U CN201621038436.0U CN201621038436U CN206020353U CN 206020353 U CN206020353 U CN 206020353U CN 201621038436 U CN201621038436 U CN 201621038436U CN 206020353 U CN206020353 U CN 206020353U
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- deflection plate
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- liner pipe
- breach
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Abstract
The utility model discloses a kind of gas chromatograph sampling bushing pipe.Its profile is cylinder glass tubing, the Sampling liner pipe bottom centre position is provided with perforation, at least two easily detachable deflection plates are installed inside the Sampling liner pipe, the deflection plate is provided with a breach at center or is uniformly provided with least two breach around, the gap position of adjacent baffle is different.Sampling liner pipe of the present utility model can enable wide boiling range fluid sample, gaseous sample and carrier gas fully mix, and make sample mix gas more uniformly enter capillary chromatograph and distribution pipeline, and the test result of test data is more accurate and reproducible；And it is convenient, with low cost that the Sampling liner pipe unpicks and washes replacing, reduce further the analysis cost of gas chromatogram.
Description
Technical field
This utility model is related to chromatographic equipment field, and in particular to a kind of gas chromatograph sampling bushing pipe.
Background technology
Gas chromatography is the one kind in chromatography, has mobile phase and fixing phase biphase, according to institute in chromatographic separation process
With the difference of mobile phase, chromatography can be divided into two big class of gas chromatography and liquid chromatography.Gas chromatography is using material
The difference of the physical propertys such as absorbability, dissolubility, affinity, cloudy stagnant effect, is carried out to each component in mixture (sample)
Separate, analyze.Gas chromatography can be widely applied to the fields such as petrochemical industry, medical and health, environmental monitoring, biochemistry.
Gas chromatography needs to inject sample, it is therefore desirable to special sample injector.Present gas chromatogram capillary
Post Sampling liner pipe shape great majority be straight or upper end into horn mouth or lower end into horn mouth, length is between 70mm～150mm.
Fluid sample instant vaporization in the bushing pipe, the wide boiling range sample after vaporization fully can not be mixed in the shorter bushing pipe of length with carrier gas
Be put into capillary chromatograph, enter every time in the wide boiling range sample of capillary chromatograph and distribution pipeline part, the ratio of each component
Example may all change, and cause analytical data poor repeatability.Gaseous sample can not be abundant in the shorter bushing pipe of length with carrier gas
Mix, gaseous sample is entered in capillary column and distribution pipeline part every time, the ratio of sample may all change, and cause analytical data
Poor repeatability.Due to Sampling liner pipe shape great majority be straight or upper end into horn mouth, solution example can not be deposited with liquid form
It is in bushing pipe, conventional injector can only enter 1 μ L or 2 μ L detection sensitivities are improved and are restricted.Sample introduction needle inserts sample introduction sealing gasket,
Chip blocks gas circuit to sealing gasket.The dirty sample direct injected of liquid also easily blocks capillary column.Application number 200520130913.1
What Chinese patent was adopted adds sample adding cup by emulsifying, solid sample, and the volatile component in sample is by diffusing into capillary chromatography
Post, such chromatographic peak hangover are very serious, affect dosing accuracy.Patent of the notification number for CN202330375U, CN2459659Y
When disclosed sample introduction test tube is used for the detection for carrying out gas chromatogram, chromatographic peak hangover is very serious, is unfavorable for the detection of target product.
Additionally, the sample introduction test tube of prior art not easy cleaning, once anti-raw pollution, can only just abandon, thus resulting in gas chromatograph makes
With high cost, it is unfavorable for the development of gas chromatograph.
Due to existing Sampling liner pipe, wide boiling range fluid sample, gaseous sample and carrier gas fully can not be mixed, and enter hair every time
The ratio of buttress shaft and distribution pipeline part each component may all change, and cause the deficiencies such as analytical data poor repeatability.Therefore it is directed to
The problems referred to above, need the new sample injector of research and development badly.
Utility model content
[technical problem to be solved]
The purpose of this utility model is to solve above-mentioned problem of the prior art, there is provided a kind of gas chromatograph sampling bushing pipe.
[technical scheme]
In order to reach above-mentioned technique effect, this utility model takes technical scheme below：
A kind of gas chromatograph sampling bushing pipe, profile are cylinder glass tubing, and the Sampling liner pipe bottom centre position is provided with
Perforation, is provided with least two easily detachable deflection plates inside the Sampling liner pipe, the deflection plate is provided with a breach at center
Or it is uniformly provided with least two breach around, the gap position of adjacent baffle is different.
With according to this utility model further technical scheme, breach on nethermost deflection plate in the Sampling liner pipe
Position is arranged on around deflection plate.
With according to this utility model further technical scheme, the deflection plate is cylinder, spheroplast, Rotary-table, shuttle
Shape, cylindrical cup or truncated cone-shaped cup；When the deflection plate is cylindrical cup or truncated cone-shaped cup, on the deflection plate
Breach is arranged on the cup bottom surface of deflection plate.
According to this utility model further technical scheme, when the deflection plate being mounted above is cylindrical cup or circle
During platform shape cup, the deflection plate rim of a cup upward, and fitted with the inwall of Sampling liner pipe, the cup of the deflection plate by the deflection plate wall of cup
The turning of outward bending is provided with mouthful；When being cylindrical cup or truncated cone-shaped cup installed in following deflection plate, the baffling
Plate rim of a cup is down.
According to this utility model further technical scheme, the inner wall space of Sampling liner pipe is shaped as cylinder or round platform
Body；When the inner wall space of Sampling liner pipe is shaped as Rotary-table, the inner diameter of Sampling liner pipe is gradually reduced from top to bottom.
According to this utility model further technical scheme, when the interior space shape of Sampling liner pipe is cylinder, should
The inside of Sampling liner pipe is additionally provided with least two symmetrical projections.
According to this utility model further technical scheme, when the deflection plate being mounted above be cylinder, spheroplast,
When Rotary-table or fusiformis, closure at the upper end open of Sampling liner pipe, is provided with, the center of closure is provided with a breach, the sealing
The diameter of lid is equal with the upper end open internal diameter of Sampling liner pipe.
According to this utility model further technical scheme, when the deflection plate being mounted above is cylindrical cup or circle
During platform shape cup, the diameter closure equal with its rim of a cup internal diameter at the rim of a cup of the deflection plate, is provided with, the center of closure is provided with
One breach.
According to this utility model further technical scheme, when the deflection plate be cylinder, spheroplast, Rotary-table or
During fusiformis, 1/4 of breach aperture≤deflection plate maximum gauge on the deflection plate；When the deflection plate for cylindrical cup or
During truncated cone-shaped cup, 1/4 of breach aperture≤deflection plate cup bottom surface maximum gauge on the deflection plate.
According to this utility model further technical scheme, the deflection plate inner surface and outer surface have carried out inertia
Change is processed.
At least two deflection plates are installed in gas chromatograph sampling bushing pipe of the present utility model, uppermost deflection plate with
The tube wall of Sampling liner pipe constitutes vaporized expanding room, then from top to bottom, between deflection plate and deflection plate, nethermost deflection plate
1st mixing chamber, 2nd mixing chamber ... N mixing chamber constituted between tube wall successively, and the N is positive integer, and the number of N
It is worth identical with the deflection plate number that installs.During gas chromatogram, sample is driven in vaporized expanding room by sample introduction needle
Vaporize, then entered in following mixing chamber by the breach on deflection plate.In order to increase the mixed of sample mix gas
Conjunction time, mixed path improve the mixing homogeneity of sample, and the gap position between adjacent baffle is differed.
Further, since the breach aperture on deflection plate is less than mixing chamber internal diameter, therefore sample mix gas can be in mixing chamber
Middle turbulence, makes mixed gas more uniformly enter in next mixing chamber, further increases the uniformity of sample mix.Separately
Outward, the breach aperture on deflection plate is the smaller the better, can so increase incorporation time, extends mixed path, is more beneficial for sample
The mixing of mixed gas, is further conducive to accuracy and the repeatability that tests.
This utility model using the preferred glass material of Sampling liner pipe be prepared from.The perforation of the Sampling liner pipe bottom can
Think directly a central small hole, or bottom necking is opened in base plane；The aperture of perforation requires one with the aperture of prior art
Cause.
When the deflection plate being mounted above for cylindrical cup or truncated cone-shaped cup when, be provided with the rim of a cup of the deflection plate to
The turning of outer bending；When the inner wall space of Sampling liner pipe is shaped as Rotary-table, the inner diameter of Sampling liner pipe from top to bottom by
Tapered little；Above-mentioned technological means are conducive to the fixation and dismounting of deflection plate.The inwall of Sampling liner pipe is additionally provided with least two
Symmetrical projection, is easy to the screens and fixation of deflection plate.It is swollen that the setting of closure can further avoid sample from being vaporized
When swollen, Sampling liner pipe is overflowed.The center of the closure is provided with a breach, is easy to the insertion of sample introduction needle tubing, and the breach
External diameter of the diameter slightly larger than sample introduction needle tubing, to ensure that, after the insertion of sample introduction needle tubing, shelves are lived sample and overflowed.The deflection plate inner surface and
Outer surface has carried out deactivation process, it is to avoid chemical reaction occurs between deflection plate and sample mix gas, affects gas phase color
The test result of spectrum.
This utility model compared with prior art, with following beneficial effect：Sampling liner pipe of the present utility model can make
Wide boiling range fluid sample, gaseous sample and carrier gas fully can be mixed, and make sample mix gas more uniformly enter capillary chromatography
Post and distribution pipeline, the test result of test data are more accurate, and reproducible；And the Sampling liner pipe unpicks and washes replacing side
Just, with low cost, reduce further the use cost of gas chromatograph.
Description of the drawings
Gas chromatographic sample introduction liner tube structure schematic diagrams of the Fig. 1 for this utility model embodiment 1；
Gas chromatographic sample introduction liner tube structure schematic diagrams of the Fig. 2 for this utility model embodiment 2；
Fig. 3 is the gas-liquid flow graph after the gas chromatographic sample introduction bushing pipe sample introduction of this utility model embodiment 1；
Fig. 4 is the gas-liquid flow graph after the gas chromatographic sample introduction bushing pipe sample introduction of this utility model embodiment 2；
Top view schematic diagrams of the Fig. 5 for this utility model gas chromatographic sample introduction bushing pipe top cover labyrinth；
Gas chromatographic sample introduction liner tube structure schematic diagrams of the Fig. 6 for this utility model embodiment 3；
Gas chromatographic sample introduction liner tube structure schematic diagrams of the Fig. 7 for this utility model embodiment 4.
Specific embodiment
This utility model is further elaborated with reference to embodiment of the present utility model.
Embodiment 1：
A kind of gas chromatographic sample introduction bushing pipe as shown in Figure 1, profile be cylinder glass tubing, the Sampling liner pipe bottom centre
Position is provided with perforation, is Rotary-table inside the gas chromatographic sample introduction bushing pipe, and the inner diameter of Sampling liner pipe gradually contracts from top to bottom
Little；Two easily detachable Rotary-table deflection plates 1 are installed inside the Sampling liner pipe, from top to bottom successively be referred to as the first deflection plate and
Second deflection plate；On first deflection plate, center is provided with the breach 2 of a diameter of first baffling board diameter 1/4, the week of the second deflection plate
Enclose the breach 2 of a diameter of second baffling board diameter 1/5 is provided near edge；First deflection plate with diameter greater than the second deflection plate
Diameter.Closure is provided with the upper end open of Sampling liner pipe.Sample introduction needle tubing inserts the central indentation sample introduction of closure；Above-mentioned
The surface of one deflection plate and the second deflection plate has carried out deactivation process.
The top view of the closure is easy to sample introduction needle tubing as shown in figure 5, the center of the closure is provided with a breach
Insertion, and the breach directly slightly larger than sample introduction needle tubing external diameter, with ensure sample introduction needle tubing insertion after, shelves live sample overflow.
Above-mentioned first deflection plate and the second deflection plate Sampling liner pipe are divided into vaporized expanding room from top to bottom, first are mixed
Close room and the second mixing chamber.
Gas chromatographic analysiss are carried out using the Sampling liner pipe, the capillary chromatograph of gas chromatogram is placed under Sampling liner pipe
At the perforation at end, sample gas-liquid flow graph as shown in figure 3, fluid sample or gaseous sample are by liquid or gas sampling pipe,
The vaporized expanding room vaporized expanding of Sampling liner pipe, and gaseous mixture is mixed into carrier gas.Gaseous mixture is dirty in the promotion of carrier gas below
To the first deflection plate, gaseous mixture changes flow direction after running into the first deflection plate, increases the turbulence of gaseous mixture and carrier gas, gaseous mixture
From the first deflection plate centre bore by entering the first mixing chamber.The second deflection plate is flowed under the promotion of gaseous mixture carrier gas below,
Gaseous mixture changes flow direction after running into the second deflection plate, increases gaseous mixture and carrier gas turbulence again, and gaseous mixture passes through the second folding
Stream plate perimeter side marginal pore enters the second mixing chamber.As the second deflection plate perimeter edge bore dia is less than the second mixing chamber internal diameter,
Gaseous mixture and carrier gas are in the indoor turbulence of the second mixing.Pass through the second mixing chamber in Sampling liner pipe through the gaseous mixture of multiple mix homogeneously
Gaseous mixture is divided into two-way by the end face of column, and mixed airflow enters the capillary chromatographic column in the external world, another road mixed airflow all the way
Enter distribution pipeline.
Embodiment 2：
A kind of gas chromatographic sample introduction bushing pipe as shown in Figure 2, profile be cylinder glass tubing, the Sampling liner pipe bottom centre
Position is provided with perforation, is cylinder inside the gas chromatographic sample introduction bushing pipe；Be provided with inside the Sampling liner pipe two easily detachable
Cylindrical cup deflection plate 1, is referred to as the first deflection plate and the second deflection plate, and the wall of cup of two deflection plates from top to bottom successively
Fit with the inwall of Sampling liner pipe；On the cup bottom surface of the first deflection plate, center is provided with lacking for a diameter of first baffling board diameter 1/5
The turning of outward bending is provided with mouth 2, and the rim of a cup of the first deflection plate；Near edge around on the cup bottom surface of the second deflection plate
It is provided with the breach 2 of a diameter of second baffling board diameter 1/6.Closure is provided with the rim of a cup of the first deflection plate.Sample introduction needle tubing is inserted
The central indentation sample introduction of closure；The surfaces externally and internally of above-mentioned first deflection plate and the second deflection plate has carried out deactivation process.
The center of the closure is provided with a breach, is easy to the insertion of sample introduction needle tubing, and the notch diameter is slightly larger than
The external diameter of sample introduction needle tubing, to ensure that, after the insertion of sample introduction needle tubing, shelves are lived sample and overflowed.
Above-mentioned first deflection plate and the second deflection plate Sampling liner pipe are divided into vaporized expanding room from top to bottom, first are mixed
Close room and the second mixing chamber.
Gas chromatographic analysiss are carried out using the Sampling liner pipe, the capillary chromatograph of gas chromatogram is placed under Sampling liner pipe
At the perforation at end, sample gas-liquid flow graph as shown in figure 3, fluid sample or gaseous sample are by liquid or gas sampling pipe,
The vaporized expanding room vaporized expanding of Sampling liner pipe, and gaseous mixture is mixed into carrier gas.Gaseous mixture is dirty in the promotion of carrier gas below
To the first deflection plate, gaseous mixture changes flow direction after running into the first deflection plate, increases the turbulence of gaseous mixture and carrier gas, gaseous mixture
From the first deflection plate centre bore by entering the first mixing chamber.The second deflection plate is flowed under the promotion of gaseous mixture carrier gas below,
Gaseous mixture changes flow direction after running into the second deflection plate, increases gaseous mixture and carrier gas turbulence again, and gaseous mixture passes through the second folding
Stream plate perimeter side marginal pore enters the second mixing chamber.As the second deflection plate perimeter edge bore dia is less than the second mixing chamber internal diameter,
Gaseous mixture and carrier gas are in the indoor turbulence of the second mixing.Pass through the second mixing chamber in Sampling liner pipe through the gaseous mixture of multiple mix homogeneously
Gaseous mixture is divided into two-way by the end face of column, and mixed airflow enters the capillary chromatographic column in the external world, another road mixed airflow all the way
Enter distribution pipeline.
Embodiment 3
A kind of gas chromatographic sample introduction bushing pipe as shown in Figure 6, profile be cylinder glass tubing, the Sampling liner pipe bottom centre
Position is provided with perforation, is Rotary-table inside the gas chromatographic sample introduction bushing pipe；The Sampling liner pipe upper interior be provided with one readily removable
The truncated cone-shaped cup deflection plate for unloading, is installed below spheroplast's deflection plate, is referred to as the first deflection plate and the from top to bottom successively
Two deflection plates, the wall of cup of the first deflection plate are fitted with the inwall of Sampling liner pipe；On the cup bottom surface of the first deflection plate, center is provided with directly
Footpath is the breach of the first baffling board diameter 1/5, and is provided with the turning of outward bending at the rim of a cup of the first deflection plate；Second deflection plate
Surrounding is provided with the breach of a diameter of second baffling board diameter 1/5 near edge.Closure is provided with the rim of a cup of the first deflection plate.
Sample introduction needle tubing inserts the central indentation sample introduction of closure；The surfaces externally and internally of above-mentioned first deflection plate and the second deflection plate has carried out lazy
Propertyization process.
Embodiment 4
A kind of gas chromatographic sample introduction bushing pipe as shown in Figure 7, profile be cylinder glass tubing, the Sampling liner pipe bottom centre
Position is provided with perforation, is Rotary-table inside the gas chromatographic sample introduction bushing pipe；The Sampling liner pipe upper interior be provided with one readily removable
The fusiformis deflection plate for unloading, is installed below a truncated cone-shaped cup deflection plate, is referred to as the first deflection plate and second from top to bottom successively
Deflection plate, the wall of cup of the second deflection plate are fitted with the inwall of Sampling liner pipe；The upper center of the first deflection plate is provided with a diameter of first
The breach of baffling board diameter 1/6；Down, cup bottom surface periphery is provided with a diameter of second baffling near edge to second deflection plate rim of a cup
The breach of board diameter 1/5.The Sampling liner pipe mouth of pipe goes out to be provided with closure.Sample introduction needle tubing inserts the central indentation sample introduction of closure；
The surfaces externally and internally of above-mentioned first deflection plate and the second deflection plate has carried out deactivation process.
Gas chromatographic analysiss are carried out using the gas chromatographic sample introduction bushing pipe and common Sampling liner pipe of above-described embodiment, internal standard is used
Method analyzes the concentration results repeatability RSD% contrasts that same sample is obtained for 10 times in the case where analysis condition is identical.Specific experiment result
As shown in table 1.
Gas chromatographic analysiss test result repeatability RSD% of the table 1 for same sample under different Sampling liner pipes
Can be seen that the analytical data ratio obtained using Sampling liner pipe of the present utility model commonly to enter from correction data above
The data redundancy that sample bushing pipe is obtained is better, and therefore this utility model Sampling liner pipe can be used for gas chromatogram, gas chromatography mass spectrometry
In instrument analysis.
Although reference be made herein to explanatory embodiment of the present utility model is described to this utility model, above-described embodiment
Only this utility model preferably embodiment, embodiment of the present utility model are simultaneously not restricted to the described embodiments, it should
Understand, those skilled in the art can be designed that a lot of other modifications and embodiment, these modifications and embodiment will fall
Within spirit disclosed in the present application and spirit.
Claims (9)
1. a kind of gas chromatograph sampling bushing pipe, profile are cylinder glass tubing, and the Sampling liner pipe bottom centre position is provided with to be worn
Hole, it is characterised in that be provided with least two easily detachable deflection plate (1) inside the Sampling liner pipe, the deflection plate is set at center
There is a breach (2) or be uniformly provided with least two breach (2) around, the gap position of adjacent baffle is different.
2. gas chromatograph sampling bushing pipe according to claim 1, it is characterised in that nethermost in the Sampling liner pipe
On deflection plate, the position of breach is arranged on around deflection plate.
3. gas chromatograph sampling bushing pipe according to claim 1, it is characterised in that the deflection plate is cylinder, spherical
Body, Rotary-table, fusiformis, cylindrical cup or truncated cone-shaped cup；When the deflection plate is cylindrical cup or truncated cone-shaped cup, institute
State the breach on deflection plate to be arranged on the cup bottom surface of deflection plate.
4. gas chromatograph sampling bushing pipe according to claim 3, it is characterised in that when the deflection plate being mounted above is
When cylindrical cup or truncated cone-shaped cup, upward, and the inwall of the deflection plate wall of cup and Sampling liner pipe is pasted the deflection plate rim of a cup
Close, at the deflection plate rim of a cup, be provided with the turning of outward bending；It is cylindrical cup or truncated cone-shaped when following deflection plate is arranged on
During cup, the deflection plate rim of a cup is down.
5. gas chromatograph sampling bushing pipe according to claim 1, it is characterised in that the interior space shape of Sampling liner pipe
For cylinder or Rotary-table；When the interior space shape of Sampling liner pipe is Rotary-table, the inner diameter of Sampling liner pipe is from up to
Under be gradually reduced.
6. gas chromatograph sampling bushing pipe according to claim 5, it is characterised in that the inner wall space shape of Sampling liner pipe
For cylinder when, the inwall of the Sampling liner pipe is additionally provided with least two symmetrical projections.
7. gas chromatograph sampling bushing pipe according to claim 3, it is characterised in that when the deflection plate being mounted above is
When cylinder, spheroplast, Rotary-table or fusiformis, closure at the upper end open of Sampling liner pipe, is provided with, the center of closure is provided with
One breach, the diameter of the closure are equal with the upper end open internal diameter of Sampling liner pipe.
8. gas chromatograph sampling bushing pipe according to claim 3, it is characterised in that when the deflection plate being mounted above is
When cylindrical cup or truncated cone-shaped cup, the diameter closure equal with its rim of a cup internal diameter at the rim of a cup of the deflection plate, is provided with, close
The center of capping is provided with a breach.
9. gas chromatograph sampling bushing pipe according to claim 3, it is characterised in that when the deflection plate is cylinder, ball
When body, Rotary-table or fusiformis, 1/4 of breach aperture≤deflection plate maximum gauge on the deflection plate；When the deflection plate
For cylindrical cup or truncated cone-shaped cup when, the 1/4 of the breach aperture on the deflection plate≤deflection plate cup bottom surface maximum gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038436.0U CN206020353U (en) | 2016-09-05 | 2016-09-05 | Gas chromatograph sampling bushing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038436.0U CN206020353U (en) | 2016-09-05 | 2016-09-05 | Gas chromatograph sampling bushing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206020353U true CN206020353U (en) | 2017-03-15 |
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ID=58259892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621038436.0U Active CN206020353U (en) | 2016-09-05 | 2016-09-05 | Gas chromatograph sampling bushing pipe |
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| CN (1) | CN206020353U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114489168A (en) * | 2022-03-21 | 2022-05-13 | 上海淳禧应用技术股份有限公司 | High-precision humidity calibration device and humidity calibration method |
-
2016
- 2016-09-05 CN CN201621038436.0U patent/CN206020353U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114489168A (en) * | 2022-03-21 | 2022-05-13 | 上海淳禧应用技术股份有限公司 | High-precision humidity calibration device and humidity calibration method |
| CN114489168B (en) * | 2022-03-21 | 2023-03-28 | 上海淳禧应用技术股份有限公司 | High-precision humidity calibration device and humidity calibration method |
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