CN201811873U - Trace gas collecting and online detecting system - Google Patents
Trace gas collecting and online detecting system Download PDFInfo
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- CN201811873U CN201811873U CN2010202659862U CN201020265986U CN201811873U CN 201811873 U CN201811873 U CN 201811873U CN 2010202659862 U CN2010202659862 U CN 2010202659862U CN 201020265986 U CN201020265986 U CN 201020265986U CN 201811873 U CN201811873 U CN 201811873U
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Abstract
The utility model relates to a trace gas collecting and online detecting system, which comprises a reactor, a first condensation reflux pipe, a gas mixing part, an online sampling part, a second condensation reflux pipe and a vacuum part, wherein the reactor, the first condensation reflux pipe, the gas mixing part, the online sampling part and the second condensation reflux pipe are connected in series through a pipeline, and the vacuum part is connected between the second condensation reflux pipe and the online sampling part in parallel. The trace gas collecting and online detecting system provides complete experimental equipment for scientific experiments, wherein the experimental equipment is good in sealing performance, can guarantee that trace gases generated during experiments are free of leakage and can not be affected other gases, realizes collecting and detecting synchronously, and is particularly widely applied to experiment of producing hydrogen through photolysis of water.
Description
Technical field
The utility model relates to a kind of minimum gas detection system, particularly relates to a kind of minimum gas that is used for fields such as photolysis water hydrogen, photocatalysis hydrogen production, the hydrogen manufacturing of photoelectrolysis water, catalysis are synthetic, catalytic degradation organism, catalytic degradation harmful gas, thermocatalysis, photochemistry, photocatalysis, light degradation, organic chemistry and collects and on-line detecting system.
Background technology
Online collection of minimum gas and Online Transaction Processing are mainly used technology such as photochemistry field, new forms of energy, new material, information processing.Photochemistry is that research is in the atom of excited electronic state, the structure of molecule and the science of physicochemical property thereof.Modern molecular photochemistry is the frontier branch of science of a multidisciplinary intersection, comprises classes such as organic photochemistry, inorganic photochemical, high-molecular optical chemistry, biological photochemistry, Optical Electro-Chemistry and optical physics.The modern optical chemistry has been opened up the degree of depth and the range of people to material understanding greatly to new ideas, new theory and the new method of research institute's foundation of excited electronic state; to understanding natural photosynthesis and life process; to utilization, the environmental protection of sun power, start new reaction path, seek new material important foundation is provided, in high-tech sectors such as new forms of energy, new material and information processing new technology, bringing into play more and more important effect.The application of this system has been played important supporting role to photochemical development.
Minimum gas collection and Online Transaction Processing, existing products in markets is most of now is the design of all steel material, this system is used for the chemical classes reaction, and collection gas is minimum gas.Use stainless steel material to be corroded by chemical substance easily, stainless steel also easy and measured gas generation physics or chemisorption, above reason all causes the significant errors of product test easily.
There is a Related product in Japan, all adopts glass material, has solved the problem that pipeline is corroded by chemical substance easily, but all uses glass material also to produce several problems: (1) glass is fragile article, and operating process easily produces product and damages; (2) sampling of product and test section have produced the part dead volume, cause the very big error of experimental test; (3) sampling part glass valve because online detection needs 2～4atm carrier gas that sample is written into gas chromatographic detection, so the glass valve more is easy to generate gas leakage and dead volume, is unfavorable for that product uses for a long time.
Because the defective that above-mentioned existing minimum gas is collected and on-line detecting system exists, the design people is actively studied innovation, collects and on-line detecting system in the hope of the minimum gas of founding a kind of new structure, makes it have more practicality.
The utility model content
Fundamental purpose of the present utility model is, overcome the defective that existing minimum gas is collected and on-line detecting system exists, and provide a kind of minimum gas of new structure to collect and on-line detecting system, technical matters to be solved is its minimum gas that produces in can guaranteeing to test not to be had leak or other gases affects, and can realize the limit collection, the limit test, thus be suitable for practicality more.
The purpose of this utility model and solve its technical matters and realize by the following technical solutions.Collect and Online Transaction Processing according to a kind of minimum gas that the utility model proposes, it comprises reactor, the first condensing reflux pipe, gas mixing portion, online sampling portion and the second condensing reflux pipe of connecting successively by pipeline, also comprises the vacuum that is attempted by between the second condensing reflux pipe and the online sampling portion.
The purpose of this utility model and solve its technical matters and also can be applied to the following technical measures to achieve further.
Preferably, aforesaid minimum gas is collected and on-line detecting system, the liquid nitrogen cold trap that wherein said vacuum comprises the vacuum work pipe and is connected this vacuum work pipe bottom.Be respectively equipped with valve on vacuum work pipe and the liquid nitrogen cold trap.
Preferably, aforesaid minimum gas is collected and on-line detecting system, and wherein said valve is that glass evacuated valve, described pipeline are glass piping.
Preferably, aforesaid minimum gas is collected and on-line detecting system, and wherein said reactor is photolysis water hydrogen reactor, photoelectric reactor, photocatalysis solid-liquid reaction device, catalysis gas-liquid-solid reactor, catalytic degradation reaction device or chemosynthesis reaction device.
Preferably, aforesaid minimum gas is collected and on-line detecting system, and the wherein said first condensing reflux pipe and the second condensing reflux pipe are respectively double-deck condensing reflux pipe, straight type condensing reflux pipe or snakelike condensing reflux pipe.
Preferably, aforesaid minimum gas is collected and on-line detecting system, and wherein said gas mixing portion is glass Electromagnetic air pump or peristaltic pump.
Preferably, aforesaid minimum gas is collected and on-line detecting system, and wherein said online sampling portion comprises six-way valve, and this six-way valve is connected to gas mixing portion, the second condensing reflux pipe, quantitative sampling pipe and chromatograph.
Preferably, aforesaid minimum gas is collected and on-line detecting system, and wherein said reactor comprises reactor body and the reactor transmittance section that connects by O-ring seal.The material of described reactor body is a high-boron-silicon glass, and the material of reactor transmittance section is a quartz glass.
By technique scheme, the utility model minimum gas is collected and on-line detecting system has following advantage at least:
(1) solved stainless steel easily by the problem of chemical substance corrosion and easy and product gas generation physical and chemical adsorption; (2) it is frangible to have solved in the use glass object, and operating process easily produces product and damages; (3) existence of system's no dead volume in use and test process has increased precision and the accuracy in the experimentation; (4) online sampling portion adopts non-damageable stainless steel ball valve, conveniently realizes online sampling; (5) the utility model mode of adopting stainless steel material and glass material to combine designs, gas is collected pipeline and is adopted glass material, online sampling portion adopts stainless steel, glass can cut down (Kovar) with the intermetallic employing and be connected or the modular connection connection, has guaranteed that promptly sealing has also guaranteed the stability of product.(6) valve that glass part adopts in the native system is high vacuum valve, has promptly guaranteed vacuum tightness, has also guaranteed the property easy to use of product, and system seldom rotates the glass valve in using, and uses the frequent metal stainless steel ball valve that is.
The utility model provides a cover the complete intact experimental facilities of sealing property for scientific experiment, the minimum gas that produces during this equipment can guarantee to test does not have leakage or other gases affects, and having realized the limit collection, the limit test has especially obtained using widely in the photolysis water hydrogen experiment.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of instructions, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is that the minimum gas that the utility model proposes is collected and the structural representation of on-line detecting system.
Fig. 2 is the formation synoptic diagram of online sampling of the present utility model portion.
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined utility model purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, to embodiment of the present utility model describe in detail as after.
Seeing also shown in Figure 1ly, is that the minimum gas that the utility model proposes is collected and the structural representation of on-line detecting system.This minimum gas is collected and Online Transaction Processing, mainly is applied to the photolysis water hydrogen system, and photolysis water hydrogen mainly is the solid-liquid phase reaction, and the minimum gas of generation is a hydrogen.This system comprises by pipeline coupled reaction device successively, the first condensing reflux pipe 7, gas mixing portion 13, online sampling portion 14 and the second condensing reflux pipe 8, constitutes the closed circuit of a sealing; And on the pipeline between the second condensing reflux pipe 8 and the online sampling portion 14, be provided with a vacuum, make this vacuum in parallel with above-mentioned closed circuit.Described reactor is photolysis water hydrogen reactor, photoelectric reactor, photocatalysis solid-liquid reaction device, catalysis gas-liquid-solid reactor, catalytic degradation reaction device or chemosynthesis reaction device.This reactor comprises reactor body 9 and reactor transmittance section 10, and these two parts connect by O-ring seal, is used for guaranteeing the sealing of whole system.Reactor body 9 is used to take up reactant liquor and catalyzer for high-boron-silicon glass, and can be used for magnetic agitation, its volume is 250ml, with the interface of the first condensing reflux pipe 7 and the second condensing reflux pipe 8 be glass standard ground 28#, reaction liquid pouring into and taking out in helping using.Reactor transmittance section 10 is a quartz glass, for double-decker is used for logical filter liquor, for example can feed deionized water, the infrared light in the filtering light path.
The utility model adopts two condensing reflux structures, comprises the first condensing reflux pipe 7 and the second condensing reflux pipe 8, adopts double-deck condensing reflux pipe, straight type condensing reflux pipe or snakelike condensing reflux pipe respectively.Inner snakelike condensation, outside straight type condensation, inside and outside acting in conjunction condensing reflux steam, the aridity when better having guaranteed minimum gas sample introduction in the system of adopting of adopting of described condensing reflux pipe.Mix to be provided with valve 5 between the portion 13 on the pipeline at the first condensing reflux pipe 7 with gas, be provided with valve 4 on the pipeline between the second condensing reflux pipe 8 and the online sampling portion 14.Between the first condensing reflux pipe 7 and the second condensing reflux pipe 8, can also connect, and on this pipeline, valve 4 is set, control the conducting of this pipeline and close by pipeline.
Described gas mixing portion 13 is glass magnetic air pump or peristaltic pump, and the minimum gas in the internal system endless loop is flowed, and can obtain representative sample, can improve the accuracy and the precision of sample introduction.
As shown in Figure 2, online sampling of the present utility model portion 14 all adopts stainless steel pipeline and stainless steel ball valve, the phenomenon of rapid wear in the use can not occur.And stainless sampling part pipeline is short, and more accurate collected specimens can not influence the variation of gas in the total system yet, thus realized the continuous on-line sampling, for experiment provides the data that can be used for analyzing more.Online sampling portion 14 mainly comprises a stainless steel six-way valve 140, be connected to gas mixing portion 13, the second condensing reflux pipe 8, quantitative sampling pipe 141 and gas chromatography GC, quantitative sampling pipe 141 can be connected with system or chromatography of gases at any time by six-way valve 140, has realized the purpose of real-time online sampling and testing.Other valves are metal valve among Fig. 2, and are the use service of six-way valve.
The liquid nitrogen cold trap 11 that described vacuum really comprises vacuum work pipe 12 and is connected these vacuum work pipe 12 bottoms.Vacuum work pipe 12 is used for the extraction system vacuum, and liquid nitrogen cold trap 11 is used for the liquid vapour that cooling system extracts, the protection vacuum pump.Be provided with valve 1 on liquid nitrogen cold trap, this valve can be controlled the disconnected and logical of vacuum pump and vacuum section; On described vacuum work pipe, be provided with valve 2, play the effect of blowdown system, also can play the effect of external vacuum.This vacuum is in conjunction with vacuum pump extraction system inner vacuum, provides vacuum environment for collecting minimum gas, has also abandoned the interference of other gases to internal system and detection.Valve 3 is used for the disconnected and logical of vacuum and closed circuit.
The pipeline that is adopted in the utility model is glass piping, and the valve that is adopted is the glass high vacuum valve, and vacuum valve can guarantee can not produce in system's use the situation of gas leakage or slow seepage.Stainless-steel tube in the online sampling portion 14 and glass piping adopt and can cut down (Kovar) and is connected or metal modular connection connection.
The minimum gas that the utility model proposes is collected and Online Transaction Processing, is specially adapted to the online collection and the on-line testing of minimum gas hydrogen, oxygen.Adopt glass piping and the mode that metal sample introduction pipeline combines, designed the annular closed pipeline, realized the function of online collection, online sampling, on-line testing.Mainly be applied to fields such as photocatalytic hydrogen production by water decomposition, light degradation pollutant, carbon dioxide (CO2) catalysis system methyl alcohol, photoelectrocatalysis, thermocatalysis, photochemistry, photocatalysis, light degradation, organic chemistry.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. a minimum gas is collected and on-line detecting system, it is characterized in that it comprises: reactor, the first condensing reflux pipe, gas mixing portion, online sampling portion and the second condensing reflux pipe of connecting successively by pipeline; Also comprise the vacuum that is attempted by between the second condensing reflux pipe and the online sampling portion.
2. minimum gas according to claim 1 is collected and on-line detecting system, it is characterized in that the liquid nitrogen cold trap that described vacuum comprises the vacuum work pipe and is connected this vacuum work pipe bottom.
3. minimum gas according to claim 2 is collected and on-line detecting system, it is characterized in that being respectively equipped with valve on described vacuum work pipe and the liquid nitrogen cold trap.
4. minimum gas according to claim 3 is collected and on-line detecting system, it is characterized in that described valve is that glass evacuated valve, described pipeline are glass piping.
5. minimum gas according to claim 1 is collected and on-line detecting system, it is characterized in that described reactor is photolysis water hydrogen reactor, photoelectric reactor, photocatalysis solid-liquid reaction device, catalysis gas-liquid-solid reactor, catalytic degradation reaction device or chemosynthesis reaction device.
6. minimum gas according to claim 1 is collected and on-line detecting system, it is characterized in that the described first condensing reflux pipe and the second condensing reflux pipe are respectively double-deck condensing reflux pipe, straight type condensing reflux pipe or snakelike condensing reflux pipe.
7. minimum gas according to claim 1 is collected and on-line detecting system, it is characterized in that described gas mixing portion is glass Electromagnetic air pump or peristaltic pump.
8. minimum gas according to claim 1 is collected and on-line detecting system, it is characterized in that described online sampling portion comprises six-way valve, and this six-way valve is connected to gas mixing portion, the second condensing reflux pipe, quantitative sampling pipe and chromatograph.
9. minimum gas according to claim 1 is collected and on-line detecting system, it is characterized in that described reactor comprises reactor body and the reactor transmittance section that connects by O-ring seal.
10. minimum gas according to claim 4 is collected and on-line detecting system, it is characterized in that adopting to cut down between described glass piping and the online sampling portion being connected or the modular connection connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202659862U CN201811873U (en) | 2010-07-21 | 2010-07-21 | Trace gas collecting and online detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202659862U CN201811873U (en) | 2010-07-21 | 2010-07-21 | Trace gas collecting and online detecting system |
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| CN201811873U true CN201811873U (en) | 2011-04-27 |
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| CN2010202659862U Expired - Fee Related CN201811873U (en) | 2010-07-21 | 2010-07-21 | Trace gas collecting and online detecting system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846072B (en) * | 2012-12-05 | 2015-08-26 | 中国科学院大连化学物理研究所 | A kind of reaction tank for In-situ Infrared monitoring |
| CN107366004A (en) * | 2017-07-06 | 2017-11-21 | 中山大学 | A kind of stainless steel optical electro-chemistry reaction unit for being provided simultaneously with the online and offline analytic function of gas |
| CN108398500A (en) * | 2018-02-28 | 2018-08-14 | 郑州大学 | A kind of gas on-line measuring device and method |
| CN108489773A (en) * | 2018-03-14 | 2018-09-04 | 中国科学院过程工程研究所 | Sample collecting apparatus, system, method and storage medium |
-
2010
- 2010-07-21 CN CN2010202659862U patent/CN201811873U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846072B (en) * | 2012-12-05 | 2015-08-26 | 中国科学院大连化学物理研究所 | A kind of reaction tank for In-situ Infrared monitoring |
| CN107366004A (en) * | 2017-07-06 | 2017-11-21 | 中山大学 | A kind of stainless steel optical electro-chemistry reaction unit for being provided simultaneously with the online and offline analytic function of gas |
| CN107366004B (en) * | 2017-07-06 | 2023-09-26 | 中山大学 | Stainless steel photoelectrochemical reaction device with gas on-line and off-line analysis functions |
| CN108398500A (en) * | 2018-02-28 | 2018-08-14 | 郑州大学 | A kind of gas on-line measuring device and method |
| CN108489773A (en) * | 2018-03-14 | 2018-09-04 | 中国科学院过程工程研究所 | Sample collecting apparatus, system, method and storage medium |
| CN108489773B (en) * | 2018-03-14 | 2020-10-09 | 中国科学院过程工程研究所 | Sample collection device, system, method and storage medium |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20180721 |
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| CF01 | Termination of patent right due to non-payment of annual fee |