CN201583530U - Heat desorption instrument of sampling tube for environment protection detection of atmosphere - Google Patents
Heat desorption instrument of sampling tube for environment protection detection of atmosphere Download PDFInfo
- Publication number
- CN201583530U CN201583530U CN2009202916591U CN200920291659U CN201583530U CN 201583530 U CN201583530 U CN 201583530U CN 2009202916591 U CN2009202916591 U CN 2009202916591U CN 200920291659 U CN200920291659 U CN 200920291659U CN 201583530 U CN201583530 U CN 201583530U
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- way valve
- sampling pipe
- gas chromatograph
- gas
- environmental protection
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Abstract
The utility model provides a heat desorption instrument of a sampling tube for environment protection detection of atmosphere, relates to a device which is matched with a gas chromatograph for use and used for detecting the content of volatile organic matters in atmosphere. The heat desorption instrument solves the problem that the sampling and analysis of volatile organic matters of the atmosphere are in the process of environment protection detection, a six-way valve and a gas path for being connected with the gas chromatograph are easy to generate memory effect on volatile organic matters with large analytical molecular weight, thus influencing the accuracy of the detected result. The heat desorption instrument comprises a heat desorption gas path system, an electric control box and a sampling tube heating device; and the heat desorption gas path system comprises the six-way valve and the gas path for being connected with the gas chromatograph. The heat desorption instrument is characterized in that the outer parts of the six-way valve and the gas path for being connected with the gas chromatograph are provided with heating devices. The heat desorption instrument carries out adjustment and control on the six-way valve and the gas path for being connected with the gas chromatograph, thus realizing consistent temperature of the whole heat desorption gas path from the sampling tube to the gas chromatograph, eliminating memory effect and leading the detected result to be more accurate.
Description
Technical field
The utility model relates to a kind of and the supporting use of gas chromatograph, is used for detecting the device of the volatile organic content of atmosphere.
Background technology
The sampling of atmospheric volatile organic compounds and analysis are routine works in the environmental protection tests, the sampling pipe method is to be adsorbed onto on the adsorbent by the atmospheric volatile organic compounds component in the gas of sampling pipe, pass through heating desorption then, under the drive of carrier gas, enter gas chromatograph, gas chromatograph carries out qualitative to volatile organic component, quantitative test.
Traditional thermal desorptioner that is used for environmental protection tests atmospheric sampling pipe, comprise: thermal desorption air-channel system, electric cabinet and sampling pipe heating arrangement three parts, the sampling pipe heating arrangement is made up of derby and heating rod, it only heats the sampling pipe that is adsorbed with atmospheric volatile organic compounds, and the six-way valve that comprises in the thermal desorption air-channel system and being used to connects on the gas circuit of gas chromatograph not heating arrangement, the sampling pipe temperature differs bigger relatively, the volatile organic matter big to the analyzing molecules amount easily produces memory effect, thereby influences the accuracy of testing result.
Summary of the invention
In sum, the purpose of this utility model is in order to solve in the atmosphere environmental protection tests process, the gas circuit that six-way valve and being used to connects gas chromatograph easily produces memory effect to the big volatile organic matter of analyzing molecules amount, thereby influence the problem of testing result accuracy, and a kind of thermal desorptioner that is used for environmental protection tests atmospheric sampling pipe that proposes.
The technical scheme that adopts for the solution problem that the utility model proposed is: a kind of thermal desorptioner that is used for environmental protection tests atmospheric sampling pipe, comprise: thermal desorption air-channel system, electric cabinet and sampling pipe heating arrangement, include in the described thermal desorption air-channel system: six-way valve and be used to connect the gas circuit of gas chromatograph, described six-way valve is provided with heating arrangement with the gas circuit outside that is connected gas chromatograph.
As the further improved technical scheme of the utility model is included:
Being located at described six-way valve external heated device is the heating arrangement that derby and heating rod are formed.
The gas circuit external heated device that is located at described connection gas chromatograph is that the heating arrangement that parcel forms is twined in the heating tape.
The heating arrangement outside that forms at described heating tape winding parcel is provided with heat-insulation layer.
Be provided with the temperature sensor that is connected with control circuit in the electric cabinet at described six-way valve with the gas circuit outside that is connected gas chromatograph.
In described electric cabinet panel, be respectively equipped with the temperature indicating device that shows the six-way valve external temperature and connect the gas circuit external temperature of gas chromatograph.
In described electric cabinet panel, be respectively equipped with the adjusting knob of regulating six-way valve and the gas circuit external heated unit temp that is connected gas chromatograph.
Being located at described six-way valve external heated device and sampling pipe heating arrangement is located in the same device.
The beneficial effects of the utility model are: the utility model to six-way valve and the temperature that is used to connect the gas circuit of gas chromatograph regulate control, thereby realize that sampling pipe is consistent to the whole thermal desorption air-channel system temperature between gas chromatograph, eliminate memory effect, make testing result more accurate.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment structure of the present utility model is further described:
Shown in Fig. 1, the utility model mainly comprises: thermal desorption air-channel system 1, electric cabinet 2 and sampling pipe heating arrangement 3.Include in the described thermal desorption air-channel system 1: sampling pipe 11, six-way valve and be used to connect the gas circuit 12 of gas chromatograph, sampling pipe heating arrangement 3 is formed heating arrangement by derby and heating rod, sampling pipe 11 is located in the heating tank of sampling pipe heating arrangement 3 first halves, the Lower Half of sampling pipe heating arrangement 3 is provided with cavity, six-way valve is located in the cavity, be equipped with heating rod in the first half of sampling pipe heating arrangement 3 and the derby of Lower Half, sampling pipe heating arrangement 3 Lower Halves are the heating arrangement of six-way valve.Be enclosed with the heating tape gas circuit 12 outside windings that connect gas chromatograph, the heating tape is the band shape heating thing of existing a kind of softness.Outside in the heating tape also is provided with heat-insulation layer.Heating rod in electric cabinet 2 and the sampling pipe heating arrangement 3 and heating tape are for being electrically connected, outside at sampling pipe 11, six-way valve and the outside that connects the gas circuit 12 of gas chromatograph are respectively equipped with temperature sensor and are connected with control circuit in the electric cabinet 2, on the panel of electric cabinet 2, be respectively equipped with and show sampling pipe 11, the display screen 213 of the temperature of the gas circuit 12 of six-way valve and connection gas chromatograph, 223,233, on the panel of electric cabinet 2, also be respectively equipped with control sampling pipe heating arrangement 3, the gauge tap 211 of the gas circuit 12 external heating bands of six-way valve heating arrangement and connection gas chromatograph, 221,231 and temperature set knob 212,222,232.The temperature that the utility model increases on traditional basis that only sampling pipe 11 temperature is shown, controls and set the gas circuit 12 of six-way valve and connection gas chromatograph shows, controls and sets, make whole thermal desorption air-channel system be in same temperature work, eliminate memory effect, make testing result more accurate.
Claims (8)
1. thermal desorptioner that is used for environmental protection tests atmospheric sampling pipe, comprise: thermal desorption air-channel system, electric cabinet and sampling pipe heating arrangement, include six-way valve in the described thermal desorption air-channel system and be used to connect the gas circuit of gas chromatograph, it is characterized in that: described six-way valve is provided with heating arrangement with the gas circuit outside that is connected gas chromatograph.
2. a kind of thermal desorptioner that is used for environmental protection tests atmospheric sampling pipe according to claim 1 is characterized in that: being located at described six-way valve external heated device is the heating arrangement that derby and heating rod are formed.
3. a kind of thermal desorptioner that is used for environmental protection tests atmospheric sampling pipe according to claim 1 is characterized in that: the gas circuit external heated device that is located at described connection gas chromatograph is that the heating arrangement that parcel forms is twined in the heating tape.
4. a kind of thermal desorptioner that is used for environmental protection tests atmospheric sampling pipe according to claim 3 is characterized in that: the heating arrangement outside that forms at described heating tape winding parcel is provided with heat-insulation layer.
5. a kind of thermal desorptioner that is used for environmental protection tests atmospheric sampling pipe according to claim 1 is characterized in that: be provided with the temperature sensor that is connected with control circuit in the electric cabinet at described six-way valve with the gas circuit outside that is connected gas chromatograph.
6. a kind of thermal desorptioner that is used for environmental protection tests atmospheric sampling pipe according to claim 5 is characterized in that: be respectively equipped with the temperature indicating device that shows the six-way valve external temperature and connect the gas circuit external temperature of gas chromatograph in described electric cabinet panel.
7. a kind of thermal desorptioner that is used for environmental protection tests atmospheric sampling pipe according to claim 6 is characterized in that: be respectively equipped with the adjusting knob of regulating six-way valve and the gas circuit external heated unit temp that is connected gas chromatograph in described electric cabinet panel.
8. a kind of thermal desorptioner that is used for environmental protection tests atmospheric sampling pipe according to claim 1 is characterized in that: be located at described six-way valve external heated device and sampling pipe heating arrangement and be located in the same device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202916591U CN201583530U (en) | 2009-12-08 | 2009-12-08 | Heat desorption instrument of sampling tube for environment protection detection of atmosphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202916591U CN201583530U (en) | 2009-12-08 | 2009-12-08 | Heat desorption instrument of sampling tube for environment protection detection of atmosphere |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201583530U true CN201583530U (en) | 2010-09-15 |
Family
ID=42725535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202916591U Expired - Fee Related CN201583530U (en) | 2009-12-08 | 2009-12-08 | Heat desorption instrument of sampling tube for environment protection detection of atmosphere |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201583530U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866304A (en) * | 2016-05-25 | 2016-08-17 | 延边大学 | Gas chromatography sample thermal desorption and automatic sample injection device |
| CN106769387A (en) * | 2016-12-21 | 2017-05-31 | 安徽省建筑工程质量监督检测站 | Pyrolysis analyzer air cooling equipment |
| CN109374367A (en) * | 2018-12-21 | 2019-02-22 | 中国人民解放军空军工程大学 | Multichannel large capacity high-temperature vacuum sampler |
-
2009
- 2009-12-08 CN CN2009202916591U patent/CN201583530U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866304A (en) * | 2016-05-25 | 2016-08-17 | 延边大学 | Gas chromatography sample thermal desorption and automatic sample injection device |
| CN106769387A (en) * | 2016-12-21 | 2017-05-31 | 安徽省建筑工程质量监督检测站 | Pyrolysis analyzer air cooling equipment |
| CN109374367A (en) * | 2018-12-21 | 2019-02-22 | 中国人民解放军空军工程大学 | Multichannel large capacity high-temperature vacuum sampler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20101208 |