CN2570784Y - Heat analysis arrangement for air total-volatility organic analyzing - Google Patents
Heat analysis arrangement for air total-volatility organic analyzing Download PDFInfo
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- CN2570784Y CN2570784Y CN 02267197 CN02267197U CN2570784Y CN 2570784 Y CN2570784 Y CN 2570784Y CN 02267197 CN02267197 CN 02267197 CN 02267197 U CN02267197 U CN 02267197U CN 2570784 Y CN2570784 Y CN 2570784Y
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- heating furnace
- air total
- sample introduction
- analyzing
- heat analysis
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Abstract
The utility model discloses a heat analysis arrangement for air total-volatility organic analyzing, which comprises a heating furnace (1) and a sample introduction device (2). The furnace chamber of the heating furnace (1) is a flat and long hole-shaped heating block (11); the sample introduction device (2) comprises a U-shaped adsorption tube (21); one end of the adsorption tube (21) is connected with an air induction passage, and the other end is connected with a sample introduction passage; the sample introduction device (2) is provided with a six-way valve (22) used for switching sample introduction and sampling point; the bottom of the heating furnace (1) is provided with a lifter (3). The heat analysis arrangement for air total-volatility organic analyzing of the utility model has short time of heat analysis for samples, high detection sensitivity, low cost and very convenient operation and use.
Description
Technical field
The utility model belongs to a kind of gas chromatographic analysis support equipment, especially a kind of thermal analysis apparatus that the air total volatile organism is analyzed that is used for that carries out the direct injected express-analysis.
Technical background
In order to prevent and control newly-built, enlarging, improved civil building engineering indoor environmental pollution, when the final acceptance of construction of civil building engineering indoor environment detects, national regulation: should adopt pyrolysis analyse/capillary gas chromatography realizes total volatile organism in the room air (TVOC) is analyzed, and adopts this method need utilize a thermal analysis apparatus.The existing thermal analysis apparatus that is used for the analysis of air total volatile organism is as Chinese patent instructions " absorption concentrates a thermal desorption device " (authorization notification number: 2062850; The authorization day for announcing: September 26 nineteen ninety) disclose a kind of thermal analysis apparatus, it is made up of desorption chamber, sample hose, sample introduction syringe needle, electric heater, carrier gas inlet, cooling coil etc., by straight type sample hose in the desorption chamber heating and carry out pyrolysis and analyse operation, sample enters chromatographic system with " stopper " shape from the sample introduction syringe needle with carrier gas then; But because this sample hose is in heated condition always, and the time of the intensification of device heating is longer, so that the pyrolysis of sample to analyse process also longer, thereby can cause the sample pyrolysis to analyse the component peak broadens, and apparatus structure complexity, cost height.
Summary of the invention
The utility model technical issues that need to address provide a kind of thermal analysis apparatus that the air total volatile organism is analyzed that is used for, and it is shorter that this device carries out the time that pyrolysis analyses to sample, the detection sensitivity height, and with low cost, manipulate very convenient.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of thermal analysis apparatus that is used for the analysis of air total volatile organism includes heating furnace and sampling device, and the furnace chamber of described heating furnace is the heat block of prolate pass shape; Described sampling device includes the adsorption tube of a U type, and this adsorption tube one end connects inlet channel, and the other end connects sample intake passage.
Described sampling device is provided with a six-way valve that is used for switch sampling and sample position; Described heating furnace bottom is provided with lifter.
Owing to taked above-mentioned scheme, the advantage that the utility model is compared with prior art had is:
1, because the utility model adopts an end to connect inlet channel, the structure that the U type adsorption tube of other end connection capillary column injector and heating furnace and sampling device are separated, U type adsorption tube is put into the heating stove furnace chamber that is heated to the pyrolysis eutectoid temperature, accelerated the pyrolysis of sample and analysed speed, shortening heat is resolved the time;
2, the furnace chamber owing to heating furnace in the utility model adopts prolate type shape, has reduced the heating space volume, has quickened the intensification of heating furnace, reduces heat time heating time and saves electric energy;
3, because the utility model is provided with the six-way valve that is used for switch sampling and sample position and is used for the lifter of lifting heating furnace, make flexible and convenient operation; And it is simple in structure, with low cost.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the structural representation of the utility model when being used for thermal analysis apparatus sample introduction that the air total volatile organism analyzes;
Fig. 2 is the structural representation of the utility model when being used for thermal analysis apparatus sampling that the air total volatile organism analyzes.
Embodiment
As shown in Figure 1, the utility model is used for the thermal analysis apparatus that the air total volatile organism is analyzed, and mainly is made up of heating furnace 1 and sampling device 2, and the furnace chamber of described heating furnace 1 is the heat block 11 of prolate pass shape, and this furnace chamber downside is provided with heat-insulating shield 12; Described sampling device 2 includes the adsorption tube 21 of a U type, and these adsorption tube 21 1 ends connect inlet channel, and the other end connects sample intake passage.
Described sampling device 2 is provided with a six-way valve 22 that is used for switch sampling and sample position; Described heating furnace 1 bottom is provided with lifter 3, is used for the lifting heating furnace.
Principle of work and use that the utility model is used for the thermal analysis apparatus of air total volatile organism analysis are: as shown in Figure 2, earlier heat block 11 heating temperature controls are ordered about in 1 power supply to heating furnace, and the furnace chamber of heating furnace 1 is heated to needed sample pyrolysis eutectoid temperature; Then as shown in Figure 1, heating furnace 1 is enclosed within on the U type adsorption tube 21 of sampling device 2 by lifter 3, owing to reached the pyrolysis eutectoid temperature in the furnace chamber, therefore only need several seconds, just can make U type adsorption tube 21 reach pyrolysis and analyse high temperature, the whole pyrolysis of total volatile organism (TVOC) of absorption in the U type adsorption tube 21 are analysed, then by switching six-way valve 22, feed carrier gas (as nitrogen) from inlet channel, the gas that can order about after pyrolysis is analysed enters the capillary column chromatographic analysis system fast by sample intake passage, and the sample component after at last pyrolysis being analysed is separated and detected.
Claims (3)
1, a kind of thermal analysis apparatus that is used for the analysis of air total volatile organism includes heating furnace (1) and sampling device (2), and it is characterized in that: the furnace chamber of described heating furnace (1) is the heat block (11) of prolate pass shape; Described sampling device (2) includes the adsorption tube (21) of a U type, and these adsorption tube (21) one ends connect inlet channel, and the other end connects sample intake passage.
2, according to claim 1ly be used for the thermal analysis apparatus that the air total volatile organism is analyzed, it is characterized in that: described sampling device (2) is provided with a six-way valve (22) that is used for switch sampling and sample position.
3, the thermal analysis apparatus that is used for the analysis of air total volatile organism according to claim 1 is characterized in that: described heating furnace (1) bottom is provided with lifter (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267197 CN2570784Y (en) | 2002-09-16 | 2002-09-16 | Heat analysis arrangement for air total-volatility organic analyzing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267197 CN2570784Y (en) | 2002-09-16 | 2002-09-16 | Heat analysis arrangement for air total-volatility organic analyzing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2570784Y true CN2570784Y (en) | 2003-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02267197 Expired - Fee Related CN2570784Y (en) | 2002-09-16 | 2002-09-16 | Heat analysis arrangement for air total-volatility organic analyzing |
Country Status (1)
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| CN (1) | CN2570784Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116762A (en) * | 2009-12-30 | 2011-07-06 | 中国科学院大连化学物理研究所 | Multi-point sampling sample injector applied to ion mobility spectrometry |
| CN103091427A (en) * | 2011-11-04 | 2013-05-08 | 中国石油化工股份有限公司 | Online pretreatment device of chromatography gas sample and use method thereof |
| CN103091428A (en) * | 2011-11-04 | 2013-05-08 | 中国石油化工股份有限公司 | Online pretreatment device of chromatography gas sample and use method thereof |
| CN104483423A (en) * | 2014-12-31 | 2015-04-01 | 同方威视技术股份有限公司 | Sample collection and thermal analysis sampling device and method as well as trace detection device |
| CN111773875A (en) * | 2020-05-21 | 2020-10-16 | 东南大学 | Solid adsorbent heavy metal steam trapping device |
| CN112973379A (en) * | 2021-05-17 | 2021-06-18 | 广东盈峰科技有限公司 | Volatile gas trapping trap and volatile gas purging and trapping device |
| CN113477053A (en) * | 2021-07-09 | 2021-10-08 | 东南大学 | Gas-solid reaction device based on solid-state generation and synergistic adsorption of two heavy metals |
-
2002
- 2002-09-16 CN CN 02267197 patent/CN2570784Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116762A (en) * | 2009-12-30 | 2011-07-06 | 中国科学院大连化学物理研究所 | Multi-point sampling sample injector applied to ion mobility spectrometry |
| CN103091427A (en) * | 2011-11-04 | 2013-05-08 | 中国石油化工股份有限公司 | Online pretreatment device of chromatography gas sample and use method thereof |
| CN103091428A (en) * | 2011-11-04 | 2013-05-08 | 中国石油化工股份有限公司 | Online pretreatment device of chromatography gas sample and use method thereof |
| CN103091428B (en) * | 2011-11-04 | 2014-08-27 | 中国石油化工股份有限公司 | Online pretreatment device of chromatography gas sample and use method thereof |
| CN103091427B (en) * | 2011-11-04 | 2015-06-17 | 中国石油化工股份有限公司 | Online pretreatment device of chromatography gas sample and use method thereof |
| CN104483423A (en) * | 2014-12-31 | 2015-04-01 | 同方威视技术股份有限公司 | Sample collection and thermal analysis sampling device and method as well as trace detection device |
| US10215666B2 (en) | 2014-12-31 | 2019-02-26 | Nuctech Company Limited | Sample injection device and method for sample collection and sample thermal desorption, and trace detection apparatus |
| CN111773875A (en) * | 2020-05-21 | 2020-10-16 | 东南大学 | Solid adsorbent heavy metal steam trapping device |
| CN112973379A (en) * | 2021-05-17 | 2021-06-18 | 广东盈峰科技有限公司 | Volatile gas trapping trap and volatile gas purging and trapping device |
| CN112973379B (en) * | 2021-05-17 | 2021-10-12 | 广东盈峰科技有限公司 | Volatile gas trapping trap and volatile gas purging and trapping device |
| CN113477053A (en) * | 2021-07-09 | 2021-10-08 | 东南大学 | Gas-solid reaction device based on solid-state generation and synergistic adsorption of two heavy metals |
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| Date | Code | Title | Description |
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| 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 |