CN205384259U - Hazardous gas's analytic system - Google Patents
Hazardous gas's analytic system Download PDFInfo
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- CN205384259U CN205384259U CN201620181699.0U CN201620181699U CN205384259U CN 205384259 U CN205384259 U CN 205384259U CN 201620181699 U CN201620181699 U CN 201620181699U CN 205384259 U CN205384259 U CN 205384259U
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Abstract
The utility model relates to a hazardous gas's analytic system, the gaseous air intake part of sample include the coherent pipe of sample, sample induction -pipe, coherent valve and pressure reducer, coherent valve set up in the sample connects tracheal one end, the sample connects tracheal other end intercommunication the one end of sample induction -pipe, the other end of sample induction -pipe is provided with the pressure reducer, auxiliary gas air intake part includes the coherent pipe of purgative gas, the coherent pipe of standard gas, mixes the gas -supply pipe, the unloading valve coherent valve and control flap, coherent valve set up in standard gas connects tracheal one end, standard gas connects tracheal other end intercommunication mix the gas -supply pipe, the purgative gas connects tracheal one end to pass through the control flap intercommunication mix the gas -supply pipe, the one end of mixing the middle part intercommunication unloading valve of gas -supply pipe, the other end intercommunication that mixes the gas -supply pipe the other end of sample induction -pipe, evacuation portion intercommunication the other end of unloading valve.
Description
Technical field
This utility model relates to field of gas detection, is specially the analysis system of a kind of toxic and harmful.
Background technology
In the process of gas generation, in order to ensure the quality (such as degree of purity, whether there is objectionable impurities etc.) of product, it is necessary to before dispatching from the factory, corresponding gas products is carried out detection and analyzes.In the process of detection, likely tested gas is poisonous, flammable explosive gas, for instance silane, phosphine, germane, sulfur dioxide etc., and when run into need these gas is detected time, it is very careful to need, and slightly reveals and will the people and animals of periphery, environment be worked the mischief.
The detection system of currently available technology, it is only three-way valve and sample gas (gas to be measured), cleaning gas (are generally helium, for pipeline being purged before starting detection every time) connect with detecting instrument, because when dismantling sample gas after testing every time, more sample gas can be remained in pipeline, in order to avoid operator are produced to endanger by the sample gas of these residuals, therefore, pipe-line system can be arranged in ventilation gas holder, the air outlet connection exhaust gas processing device of ventilation gas holder.
But consequently, it is possible to may create the problem that 1. ventilation gas holders costly, using area be there are certain requirements simultaneously；2. adopting helium directly to purge displacement, cause that helium consumes more, relatively costly, because helium is rare gas, price is much more expensive, additionally, also can there is the sample danger at pipeline residual.
Utility model content
The purpose of this utility model be in that solve the problems referred to above, it is proposed to the analysis system of a kind of toxic and harmful, to solve the leakage of sample gas, and reduce helium make consumption.
This utility model is it is also proposed that the using method of analysis system of a kind of toxic and harmful so that simple to operate easily, and accuracy in detection is high.
The analysis system of toxic and harmful of the present utility model, including evacuation portion, sample gas intake section and assist gas intake section；Described sample gas intake section B includes sample trachea, sample snorkel, connects air valve and decompressor, the described air valve that connects is arranged at one end of described sample trachea, the other end of described sample trachea connects one end of described sample snorkel, and the other end of described sample snorkel is provided with decompressor；Described assist gas intake section include purgative gas trachea, Standard Gases trachea, mixing appendix, emptying valve, described in connect air valve and control valve, the described air valve that connects is arranged at one end of described Standard Gases trachea, the other end of described Standard Gases trachea connects described mixing appendix, one end of purgative gas trachea connects described mixing appendix by described control valve, one end of the middle part connection emptying valve of described mixing appendix, the other end of described mixing appendix connects the other end of described sample snorkel；Described evacuation portion connects the other end of described emptying valve.
Preferably, described evacuation portion includes vacuum generator, the other end of the described empty valve of negative port connection of described vacuum generator.
Preferably, the other end of described Standard Gases trachea connects described mixing appendix by described control valve；The other end of described sample trachea connects described sample snorkel by described control valve 2.
Preferably, described control valve is stop valve, described in connect air valve be needle valve, described emptying valve is stop valve.
Preferably, the barotropic gas of described vacuum generator is nitrogen.
Preferably, being additionally provided with check valve, described check valve is arranged at the close end of the inlet end of described mixing appendix.
Preferably, being additionally provided with Pressure gauge, described Pressure gauge is arranged at the other end of described sample snorkel.
Preferably, described sample snorkel and 316 stainless steel tubes that described mixing appendix is 1/8 inch.
The analysis system of toxic and harmful of the present utility model, simple and reliable for structure, maintain easily, and low cost of manufacture, applicable heavy industrialization is quoted；The using method of the analysis system of toxic and harmful of the present utility model, it is easy to operation, step is simple.
Accompanying drawing explanation
This utility model is described further by accompanying drawing, but the content in accompanying drawing is not constituted any restriction of the present utility model.
Fig. 1 is the schematic diagram of one of them embodiment of the present utility model；
Fig. 2 is the schematic diagram of the pipe-line system of prior art.
Wherein: evacuation portion A, vacuum generator A1, sample gas intake section B, sample trachea B1, sample snorkel B2, decompressor B4, assist gas intake section C, purgative gas trachea C1, Standard Gases trachea C2, mixing appendix C3, emptying valve C4, control valve 2, connect air valve 3, check valve 4, Pressure gauge 5, detection equipment 10.
Detailed description of the invention
Detailed description of the invention of the present utility model given below, is used for composition of the present utility model is described in further detail.
The analysis system of the toxic and harmful of the present embodiment, as it is shown in figure 1, include evacuation portion A, sample gas intake section B and assist gas intake section C；Described sample gas intake section B includes sample trachea B1, sample snorkel B2, meets air valve 3 and decompressor B4, the described air valve 3 that connects is arranged at one end of described sample trachea B1, the other end of described sample trachea B1 connects one end of described sample snorkel B2, and the other end of described sample snorkel B2 is provided with decompressor B4；The described air valve 3 that connects is arranged at one end of described sample trachea B1, reduces the space storing gas in pipeline, reduces the gas leakage remaining in pipeline when dismantling sample gas as far as possible.Described assist gas intake section C includes purgative gas trachea C1, Standard Gases trachea C2, mixing appendix C3, emptying valve C4, described connect air valve 3 and control valve 2, the described air valve 3 that connects is arranged at one end of described Standard Gases trachea C2, the other end of described Standard Gases trachea C2 connects described mixing appendix C3, one end of purgative gas trachea C1 connects described mixing appendix C3 by described control valve 2, one end of the middle part connection emptying valve C4 of described mixing appendix C3, the other end of described mixing appendix C3 connects the other end of described sample snorkel B2；Described evacuation portion A connects the other end of described emptying valve C4.
The using method of the analysis system of the present embodiment is as follows:
Step 1: decompressor B4 communication with detection equipment 10；In general, described detection equipment 10 is chromatograph, and the time that different gas can go out peak in chromatograph is all different, therefore, according to chromatograph appearance time and peak area, it is possible to detect component and the content of tested gas；By the decompressor B4 decompression to pipeline air pressure, it is to avoid detection equipment 10 is subject to excessive air pressure and damages.
Step 2: pipeline purges, closes described emptying valve C4 and described connects air valve 3, and helium enters gas circuit by purgative gas trachea C1 to carry out displacement and purge, and closes the control valve 2 of helium access, opens emptying valve C4 and pipeline is carried out evacuation；Causing that cost increases in order to avoid consuming too much helium, employing purges displacement and evacuation be combined with each other, and pipeline is taken out very after pipeline carries out purging displacement by input helium
Sky, so just can avoid the waste of helium, simultaneously, it is ensured that pipeline has been replaced totally.Preferably, after this step repeats 5 times, then next step is started.
Step 3: calibrating gas accesses, closes emptying valve C4, and that opens Standard Gases trachea C2 connects air valve 3；Owing to the Main Function of Standard Gases is to demarcate chromatograph, it is ensured that the repeatability of instrument is with accurate
Property, and as the demarcation of sample detection result (composition and content), therefore, need before sample gas is detected, access the calibrating gas of principal component in advance, and with detection equipment 10, calibrating gas is detected, and draw the detection data of calibrating gas.
Step 4: pipeline purges, closes described emptying valve C4 and described connects air valve 3, and helium enters gas circuit by purgative gas trachea C1 to carry out displacement and purge, and closes the control valve 2 of helium access, opens emptying valve C4 and pipeline is carried out evacuation；In order to avoid the accuracy of detection, pipeline will be cleaned before detecting every time.Preferably, after this step repeats 5 times, then next step is started.
Step 5: sample gas accesses, closes emptying valve C4, and that opens sample trachea B1 connects air valve 3；Sample gas is detected by detection equipment 10, and draws the detection data of sample gas；And then compare with the detection data of calibrating gas, content and the composition of sample gas can be drawn.
Step 6: line clear, closes described emptying valve C4 and described connects air valve 3, and helium enters gas circuit by purgative gas trachea C1 to carry out displacement and purge, and closes the control valve 2 that helium accesses, opens emptying valve C4 and pipeline is carried out evacuation.In order to avoid sample gas after removal, remain in the leakage of the gas in pipeline to work the mischief, it is therefore desirable to after pipeline is emptied, carry out the dismounting of sample gas cylinder again.
Preferably, described evacuation portion A includes the other end of the described empty valve C4 of negative port connection of vacuum generator A1, described vacuum generator A1, and more specifically, the barotropic gas of described vacuum generator A1 is nitrogen.Adopt vacuum generator A1 that pipe-line system is carried out evacuation, it is possible to reach good vacuum effectiveness, and compared with air exhauster, pipeline is simple, easy to operate, and with low cost.
Preferably, the other end of described Standard Gases trachea C2 connects described mixing appendix C3 by described control valve 2；The other end of described sample trachea B1 connects described sample snorkel B2 by described control valve 2；More specifically, described control valve 2 is stop valve, described in connect air valve 3 for needle valve, described emptying valve C4 is stop valve.Needle valve can regulate flow, because if the input flow rate of sample gas, calibrating gas is excessive, can cause that the consumption of sample gas is excessive, wastes finished product；If but crossing and cannot be carried out at least checking；And control valve 2 and adopt stop valve; and by two valves, the access of sample gas and calibrating gas is controlled, it is connect air valve 3 regulate input air pressure to first pass through when operation, and after pipeline all empties; open control valve 2 again, further pipe-line system is protected.
Preferably, the present embodiment is additionally provided with check valve 4, and described check valve 4 is arranged at the close end of the inlet end of described mixing appendix C3.Arranging check valve 4 can only allow calibrating gas and cleaned gas stream enter in pipe-line system, sample gas is avoided to flow to calibrating gas and clean the access port of gas, and then pollution pipeline, and avoid sample gas to leak from the access port of calibrating gas and cleaning gas, it is ensured that the sealing of whole pipeline.
Preferably, the present embodiment is additionally provided with check valve 4, is additionally provided with Pressure gauge 5, and described Pressure gauge 5 is arranged at the other end of described sample snorkel B2.Arranging Pressure gauge can air pressure in moment monitored pipeline, it is to avoid air pressure is excessive and causes the infringement to detection equipment 10.
Preferably, described sample snorkel B2 and 316 stainless steel tubes that described mixing appendix C3 is 1/8 inch.The diameter of pipeline is not easily excessive, crosses conference and causes the waste of various gas, and owing to the cleanliness factor of 316 stainless steel tubes is of a relatively high, not easily sample gas is polluted.
The analysis system of the toxic and harmful of the present embodiment and using method have the advantage that 1. employing evacuation and the method for gas purging displacement, pipeline are cleaned, it is to avoid clean the waste of gas, be substantially reduced running cost；2., before dismounting sample gas, pipeline is cleared up, it is to avoid the sample gas remained in pipeline pollutes；3. adopt check valve 4 to avoid sample gas to be leaked by the access port of calibrating gas and cleaning gas, it is ensured that the sealing of whole pipeline；4. adopting nitrogen is the vacuum generator A1 of pressure source, and the effect making evacuation is notable, and with low cost, easily operate.
Know-why of the present utility model is described above in association with specific embodiment.These describe and are intended merely to explanation principle of the present utility model, and can not be construed to the restriction to this utility model protection domain by any way.Based on explanation herein, those skilled in the art need not pay performing creative labour can associate other detailed description of the invention of the present utility model, and these modes fall within protection domain of the present utility model.
Claims (8)
1. the analysis system of a toxic and harmful, it is characterised in that: include evacuation portion, sample gas intake section and assist gas intake section；
Described sample gas intake section B includes sample trachea, sample snorkel, connects air valve and decompressor, the described air valve that connects is arranged at one end of described sample trachea, the other end of described sample trachea connects one end of described sample snorkel, and the other end of described sample snorkel is provided with decompressor；
Described assist gas intake section include purgative gas trachea, Standard Gases trachea, mixing appendix, emptying valve, described in connect air valve and control valve, the described air valve that connects is arranged at one end of described Standard Gases trachea, the other end of described Standard Gases trachea connects described mixing appendix, one end of purgative gas trachea connects described mixing appendix by described control valve, one end of the middle part connection emptying valve of described mixing appendix, the other end of described mixing appendix connects the other end of described sample snorkel；
Described evacuation portion connects the other end of described emptying valve.
2. the analysis system of toxic and harmful according to claim 1, it is characterised in that: described evacuation portion includes vacuum generator, the other end of the described empty valve of negative port connection of described vacuum generator.
3. the analysis system of toxic and harmful according to claim 1, it is characterised in that: the other end of described Standard Gases trachea connects described mixing appendix by described control valve；The other end of described sample trachea connects described sample snorkel by described control valve.
4. the analysis system of toxic and harmful according to claim 1, it is characterised in that: described control valve is stop valve, described in connect air valve be needle valve, described emptying valve is stop valve.
5. the analysis system of toxic and harmful according to claim 2, it is characterised in that: the barotropic gas of described vacuum generator is nitrogen.
6. the analysis system of toxic and harmful according to claim 1, it is characterised in that: being additionally provided with check valve, described check valve is arranged at the close end of the inlet end of described mixing appendix.
7. the analysis system of toxic and harmful according to claim 1, it is characterised in that: being additionally provided with Pressure gauge, described Pressure gauge is arranged at the other end of described sample snorkel.
8. the analysis system of toxic and harmful according to claim 1, it is characterised in that: described sample snorkel and 316 stainless steel tubes that described mixing appendix is 1/8 inch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620181699.0U CN205384259U (en) | 2016-03-09 | 2016-03-09 | Hazardous gas's analytic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620181699.0U CN205384259U (en) | 2016-03-09 | 2016-03-09 | Hazardous gas's analytic system |
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| CN205384259U true CN205384259U (en) | 2016-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784863A (en) * | 2016-03-09 | 2016-07-20 | 广东华特气体股份有限公司 | Toxic or harmful gas analysis system and using method |
-
2016
- 2016-03-09 CN CN201620181699.0U patent/CN205384259U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784863A (en) * | 2016-03-09 | 2016-07-20 | 广东华特气体股份有限公司 | Toxic or harmful gas analysis system and using method |
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