CN212341124U - Straight-through type sampling system of thermal desorption instrument - Google Patents
Straight-through type sampling system of thermal desorption instrument Download PDFInfo
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- CN212341124U CN212341124U CN202021265101.9U CN202021265101U CN212341124U CN 212341124 U CN212341124 U CN 212341124U CN 202021265101 U CN202021265101 U CN 202021265101U CN 212341124 U CN212341124 U CN 212341124U
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Abstract
The utility model discloses a through sampling system of thermal desorption appearance, including two solenoid valve, gaseous surge damping valve, thermal desorption two solenoid valve, heating furnace, sample transmission pipeline of ventilating, it is provided with the heating desorption structure, and the heating desorption structure includes the heating furnace, the inside pyrolysis straw that is provided with of heating furnace, heating furnace one end is provided with first pyrolysis straw joint of ventilating, the heating furnace other end is provided with second pyrolysis straw joint of ventilating. The utility model discloses current two-position three-way solenoid valve advances a kind and six-way valve rotates sampling system, has realized the simplification of thermal desorption appearance sampling system, has reduced sampling system's equipment cost, compares current sampling system, the utility model discloses the direct sampling system of thermal desorption appearance that sets up also is applicable to the analysis and detection of low content and trace sample component, has enlarged application range, has improved its practicality.
Description
Technical Field
The utility model belongs to the technical field of gas chromatography analytic system technique and specifically relates to a direct sampling system of thermal desorption appearance is related to.
Background
The gas chromatography is a chromatography using gas as a mobile phase, because the sample has a high transfer speed in the gas phase, the components of the sample can reach equilibrium between the mobile phase and a stationary phase instantly, and in addition, a lot of substances which can be selected as the stationary phase are added, so the gas chromatography is a separation analysis method with high analysis speed and high separation efficiency, and the thermal analyzer is a sample pretreatment device in a gas chromatograph analysis and detection system, and mainly adopts a physical mode to heat and adsorb the sample, thereby achieving the purpose of purifying the sample.
In implementing the present invention, the inventor finds that at least the following problems exist in the prior art and are not solved: the existing sample introduction system has a complex structure and low practicability, and the detection precision is required to be improved when analyzing and detecting some low-content and trace sample components.
Therefore, a straight-through type sample introduction system of the thermal desorption instrument is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a direct-through sampling system of thermal desorption appearance, it is complicated to solve current sampling system structure, and the practicality is not high, examines time measuring at the analysis to some low content and trace sample component, detects the problem that the precision also remains to improve, has realized the simplification of thermal desorption appearance sampling system, has improved its practicality, examines time measuring at the analysis to some low content and trace sample component, detects the precision and also improves to some extent to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the straight-through type sample introduction system of the thermal desorption instrument comprises a ventilation two-way electromagnetic valve, a gas pressure stabilizing valve, a thermal desorption two-way electromagnetic valve, a heating furnace and a sample transmission pipeline, and the heating desorption structure is arranged on the thermal desorption two-way electromagnetic valve;
the heating desorption structure comprises a heating furnace, wherein a pyrolysis straw is arranged in the heating furnace, one end of the heating furnace is provided with a first pyrolysis straw ventilation joint, and the other end of the heating furnace is provided with a second pyrolysis straw ventilation joint.
Preferably, one end of the gas pressure stabilizing valve is provided with a gas pressure gauge.
Preferably, a heating pipe is arranged in the sample transmission pipeline.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses the through sampling system of thermal desorption appearance that sets up, current two-position three-way solenoid valve advances a kind and six-way valve rotates sampling system compared, has realized the simplification of thermal desorption appearance sampling system, has reduced sampling system's assembly cost, compares current sampling system, the utility model discloses the through sampling system of thermal desorption appearance that sets up also is applicable to the analysis and detection of low content and trace sample component, has enlarged application range, has improved its practicality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the structure schematic diagram of the sample feeding system of the utility model.
Description of reference numerals:
in the figure: 1. a vent two-way solenoid valve; 2. a gas pressure maintaining valve; 3. a gas pressure gauge; 4. thermally desorbing the two-way solenoid valve; 5. a first pyrolysis straw vent fitting; 6. pyrolyzing the straw; 7. heating furnace; 8. a second pyrolysis straw venting nipple; 9. heating a tube; 10. a sample transfer line.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution of a straight-through sample feeding system of a thermal desorption apparatus:
a straight-through type sample introduction system of a thermal desorption instrument is shown in figure 1 and comprises a ventilation two-way electromagnetic valve 1, a gas pressure stabilizing valve 2, a thermal desorption two-way electromagnetic valve 4, a heating furnace 7 and a sample transmission pipeline 10, wherein the sample transmission pipeline is provided with a heating desorption structure;
the heating desorption structure comprises a heating furnace 7, a pyrolysis straw 6 is arranged in the heating furnace 7, one end of the heating furnace 7 is provided with a first pyrolysis straw ventilation joint 5, and the other end of the heating furnace 7 is provided with a second pyrolysis straw ventilation joint 8.
Specifically, as shown in fig. 1, one end of the gas pressure maintaining valve 2 is provided with a gas pressure gauge 3.
Specifically, as shown in fig. 1, a heating pipe 9 is disposed inside the sample transmission pipeline 10.
The working principle is as follows: when the utility model is used, firstly, the carrier gas enters into the heating desorption structure after passing through the two-way vent solenoid valve 1, the gas pressure stabilizing valve 2 and the thermal desorption two-way solenoid valve 4, the first pyrolysis straw air connector 5 and the second pyrolysis straw air connector 8 which are arranged at the two ends of the heating desorption structure enable the heating desorption structure to be connected with the pipeline, the sample to be detected is injected into the pyrolysis straw 6 filled with the adsorbent (the filler in the adsorption tube of the thermal analyzer needs to determine the proper adsorbent according to the sample property of the sample), wherein the volatile components are adsorbed and eliminated, the residual sample in the pyrolysis straw 6 is heated by the heating furnace 7, the volatile organic compounds collected are desorbed, the sample to be detected enters into the sample transmission pipeline 10 along with the carrier gas and enters into the capillary gas chromatograph for analysis and detection after being further heated by the heating pipe 9, the direct type sample introduction system of the thermal desorption instrument is arranged, present two-position three way solenoid valve advances a kind and six-way valve rotates sampling system compares, has realized the simplification of thermal desorption appearance sampling system, has reduced sampling system's equipment cost, compares current sampling system, the utility model discloses the through type sampling system of thermal desorption appearance that sets up also is applicable to the analysis and detection of low content and trace sample component, has enlarged application range, has improved its practicality.
The electric elements that appear here all are connected through transformer and external master controller and 220V commercial power electricity to the master controller can play the conventional known equipment of control for the computer and so on, the utility model provides a product model is only for the use that this technical scheme goes on according to the structural feature of product, and its product can be adjusted and reformed transform after purchasing, makes it match more and accord with the utility model discloses technical scheme belongs to, it is the technical scheme of this technical scheme best application, and the model of its product can be according to the technical parameter of its needs and replace and reform transform, and it is known for technical personnel that belong to in the field, consequently, what technical personnel that belong to in the field can be clear passes through the utility model provides a corresponding result of use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The straight-through type sampling system of the thermal desorption instrument comprises a ventilation two-way electromagnetic valve (1), a gas pressure stabilizing valve (2), a thermal desorption two-way electromagnetic valve (4), a heating furnace (7) and a sample transmission pipeline (10), and is characterized in that: it is provided with a heating desorption structure;
the heating desorption structure comprises a heating furnace (7), a pyrolysis straw (6) is arranged in the heating furnace (7), a first pyrolysis straw ventilation connector (5) is arranged at one end of the heating furnace (7), and a second pyrolysis straw ventilation connector (8) is arranged at the other end of the heating furnace (7).
2. A flow-through sample introduction system for a thermal desorption apparatus according to claim 1, wherein: and a gas pressure gauge (3) is arranged at one end of the gas pressure stabilizing valve (2).
3. A flow-through sample introduction system for a thermal desorption apparatus according to claim 1, wherein: and a heating pipe (9) is arranged in the sample transmission pipeline (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021265101.9U CN212341124U (en) | 2020-07-02 | 2020-07-02 | Straight-through type sampling system of thermal desorption instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021265101.9U CN212341124U (en) | 2020-07-02 | 2020-07-02 | Straight-through type sampling system of thermal desorption instrument |
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| CN212341124U true CN212341124U (en) | 2021-01-12 |
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| CN202021265101.9U Active CN212341124U (en) | 2020-07-02 | 2020-07-02 | Straight-through type sampling system of thermal desorption instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903413A (en) * | 2021-01-28 | 2021-06-04 | 中国工程物理研究院核物理与化学研究所 | Online crushing thermal desorption device for irradiation target |
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2020
- 2020-07-02 CN CN202021265101.9U patent/CN212341124U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903413A (en) * | 2021-01-28 | 2021-06-04 | 中国工程物理研究院核物理与化学研究所 | Online crushing thermal desorption device for irradiation target |
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