CN104075915B - A kind of vacuum line system for gas sampling and method - Google Patents
A kind of vacuum line system for gas sampling and method Download PDFInfo
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- CN104075915B CN104075915B CN201410349928.0A CN201410349928A CN104075915B CN 104075915 B CN104075915 B CN 104075915B CN 201410349928 A CN201410349928 A CN 201410349928A CN 104075915 B CN104075915 B CN 104075915B
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Abstract
The present invention relates to a kind of vacuum line system and method, be mainly used in the gas sampling in environmental monitoring, be specifically related to a kind of vacuum line system for gas sampling and method.Including: the inlet one-way valve that is sequentially connected with by pressure duct, pressure limiting valve, pipeline select device, sample can, are then connected to described pipeline again through pressure duct with described sample can parallel join and select the vacuum extractor of device.Therefore, present invention have the advantage that 1. structures are simplified, gas circuit concentrates more, briefly, smooth；2. simple to operate, inflation and the switching bled can be automatically performed, it is not necessary to manual intervention；3. perfect in shape and function, not only fills dry gas, moreover it is possible to fill dampness；4. use safety, adopt relief valve technology, it is ensured that the equipment self-protection ability when the blowing pressure is excessive.
Description
Technical field
The present invention relates to a kind of vacuum line system and method, be mainly used in the gas sampling in environmental monitoring, be specifically related to a kind of vacuum line system for gas sampling and method.
Background technology
The fast development of modern industry brings improve greatly and convenient to culture life and the material life of the mankind; but consequently also create the pollution of indoor-outdoor air simultaneously; therefore; to the monitoring of atmospheric environment with administer the concern having caused the world, the various researchs of atmospheric environment protection and measure are become the responsibility of the whole mankind.One of important step as atmosphere environment supervision, gas sampling is exactly collect the gas discharged, and by the gas experiment Analysis collected, draw composition and the content of the gas collected, thus drawing the need of the conclusion that discharged gas needs to carry out harmless treatment.
At present, the gas sampling mode adopted in the monitoring of air there is problems in that 1. equipment pipes are complicated, circuit design many employings threeway of existing gas sampling device or straight coupling, use substantial amounts of electromagnetic valve simultaneously, have how many passages, use how many electromagnetic valves, and each electromagnetic valve will be energized during work always, so that the pipeline of equipment is complicated, bulky, not easily install and use.2. automaticity is low, and the gas circuit main employing of design in existing gas sampling device manually adds automatic mode and controls, and needs manual switching when inflating and bleeding, it is difficult to realize automatic switching function.3. function singleness, the gas circuit design in existing gas sampling device can only realize single dry gas function of filling, without the function filling dampness.4. poor stability, equipment when the blowing pressure is excessive, the easily rupturable difficulty of pipeline, there is potential safety hazard.
Summary of the invention
The present invention mainly solves the technical problems such as equipment pipe complicated, automaticity low, function singleness, the poor stability existing for prior art, it is provided that a kind of vacuum line system for gas sampling and method.Adopting this vacuum line system and method, device structure is simple, and method is easily operated, and safety is better, it is possible to is automatically performed inflation and the switching bled, and can complete to fill dampness operation.
The above-mentioned technical problem of the present invention is addressed mainly by following technical proposals:
A kind of vacuum line system for gas sampling, including: the inlet one-way valve that is sequentially connected with by pressure duct, pressure limiting valve, pipeline select device, sample can, then being connected to described pipeline again through pressure duct with described sample can parallel join and select the vacuum extractor of device, described vacuum extractor includes the 4th electromagnetic valve and the vacuum pump being sequentially connected in series by pressure duct；Described pipeline selects device to include dry gas pipeline and the dampness pipeline of mutual parallel join, and wherein, described dry gas pipeline includes the first electromagnetic valve being placed on pressure duct passage；Check valve that described dampness pipeline includes being sequentially connected in series by pressure duct, vacuum liquid bottle, the second electromagnetic valve；The inlet end of described vacuum liquid bottle mesohigh pipeline is connected to a filtering plug and is positioned under bottle liquid surface, and the outlet side vicinal of described vacuum liquid bottle mesohigh pipeline is in bottle on liquid surface.
Optimize, above-mentioned a kind of vacuum line system for gas sampling, also include one in parallel with described sample can after again through pressure duct be connected to described pipeline select device pressure-display device, described pressure-display device includes the 5th electromagnetic valve and the vacuometer being sequentially connected in series by pressure duct.
Optimize, above-mentioned a kind of vacuum line system for gas sampling, also include one with described sample can parallel join after again through pressure duct be connected to described pipeline selection device on relief valve.
Optimize, above-mentioned a kind of vacuum line system for gas sampling, also include one with the silencing means selecting device to be connected again through pressure duct and described pipeline after described sample can parallel connection, pressure transducer that described silencing means includes being sequentially connected in series by pressure duct, the 3rd electromagnetic valve, deafener.
A kind of method utilizing above-mentioned vacuum line system to carry out gas sampling, including:
Preparation process, is connected to inlet one-way valve by outside hyperbaric environment, then utilizes vacuum extractor by vacuum line system vacuum pumping state；
Aeration step, opens inlet one-way valve, utilizes pipeline to select device to inflate to sample can；
Pump step, closes inlet one-way valve, opens the 4th electromagnetic valve, uses vacuum pump by system vacuum pumping state.
Optimizing, the above-mentioned method utilizing vacuum line system to carry out gas sampling, what be filled with in described aeration step is dry gas, and this aeration step farther includes: close the second electromagnetic valve, opens the first electromagnetic valve.
Optimizing, the above-mentioned method utilizing vacuum line system to carry out gas sampling, what be filled with in described aeration step is dampness, and this aeration step farther includes: close the first electromagnetic valve, opens the second electromagnetic valve.
Therefore, present invention have the advantage that 1. structures are simplified, gas circuit concentrates more, briefly, smooth；2. simple to operate, inflation and the switching bled can be automatically performed, it is not necessary to manual intervention；3. perfect in shape and function, not only fills dry gas, moreover it is possible to fill dampness；4. use safety, adopt relief valve technology, it is ensured that the equipment self-protection ability when the blowing pressure is excessive.
Accompanying drawing explanation
Fig. 1 is the structure chart of the present invention.
Detailed description of the invention
By the examples below, and in conjunction with accompanying drawing, technical scheme is described in further detail.In figure, inlet one-way valve 1, pressure limiting valve 2, pipeline select device 3, sample can 4, vacuum extractor the 5, the 4th electromagnetic valve 501, vacuum pump 502, pressure-display device the 6, the 5th electromagnetic valve 601, vacuometer 602, relief valve 7, pressure transducer the 801, the 3rd electromagnetic valve 802, deafener 803.
Embodiment:
Vacuum line system for gas sampling shown in Figure 1, including: the inlet one-way valve 1 that is sequentially connected with by pressure duct, pressure limiting valve 2, pipeline select device 3, sample can 4, are then connected to pipeline again through pressure duct with sample can 4 parallel join and select the vacuum extractor 5 of device 3, pressure-display device 6, relief valve 7, silencing means 8；Wherein: vacuum extractor includes the 4th electromagnetic valve 501 and the vacuum pump 502 that are sequentially connected in series by pressure duct；Pipeline selects device 3 to include dry gas pipeline and the dampness pipeline of mutual parallel join, and wherein, dry gas pipeline includes the first electromagnetic valve 301 being placed on pressure duct passage；Dampness pipeline includes the check valve 302, vacuum liquid bottle the 303, second electromagnetic valve 304 that are sequentially connected in series by pressure duct；The inlet end of vacuum liquid bottle 303 mesohigh pipeline is connected to a filtering plug 305 and is positioned under bottle liquid surface, and the outlet side vicinal of vacuum liquid bottle 303 mesohigh pipeline is in bottle on liquid surface；Pressure-display device 6 includes the 5th electromagnetic valve 601 and the vacuometer 602 that are sequentially connected in series by pressure duct；Silencing means 8 selects device 3 to be connected with after sample can 4 parallel connection again through pressure duct and pipeline, and silencing means 8 includes pressure transducer the 801, the 3rd electromagnetic valve 802, the deafener 803 that are sequentially connected in series by pressure duct.
The gas circuit of the present embodiment is designed with the mode simplified most, such as more use four-way connections, and does not adopt threeway or straight coupling so that gas circuit is concentrated more, briefly, smooth.Wherein: vacuum liquid bottle 303 seals in after in the middle of gas circuit, in gas replenishment process, passes the gas through a period of time in vacuum liquid bottle, thus complete twin conduit carries out filling the process of dampness；Relief valve 7 ensure that the equipment self-protection ability when the blowing pressure is excessive.
The gas sampling of the present embodiment comprises the following steps: preparation process, and outside hyperbaric environment is connected to inlet one-way valve 1, then utilizes vacuum extractor 5 by vacuum line system vacuum pumping state；Aeration step, opens inlet one-way valve 1, utilizes pipeline to select device 3 to inflate to sample can 4；Pump step, closes inlet one-way valve 1, opens the 4th electromagnetic valve 501, uses vacuum pump 502 by system vacuum pumping state.
Wherein, in aeration step, it is possible to be filled with dry gas or dampness as required.Close the second electromagnetic valve 304 when being filled with dry gas, open the first electromagnetic valve 301；When being filled with dampness, close the first electromagnetic valve 301, open the second electromagnetic valve 304.
Specific embodiment described herein is only to present invention spirit explanation for example.Described specific embodiment can be made various amendment or supplements or adopt similar mode to substitute by those skilled in the art, but without departing from the spirit of the present invention or surmount the scope that appended claims is defined.
Although more employing the terms such as inlet one-way valve 1, pressure limiting valve 2, pipeline selection device 3, sample can 4, vacuum extractor 5, the 4th electromagnetic valve 501, vacuum pump 502, pressure-display device 6, the 5th electromagnetic valve 601, vacuometer 602, relief valve 7, pressure transducer 801, the 3rd electromagnetic valve 802, deafener 803 herein, but it is not precluded from using the probability of other term.Use these terms, be the essence in order to describe and explain the present invention more easily；It is all contrary with spirit of the present invention for being construed as any additional restriction.
Claims (7)
1. the vacuum line system for gas sampling, including: the inlet one-way valve (1) that is sequentially connected with by pressure duct, pressure limiting valve (2), pipeline select device (3), sample can (4), then being connected to described pipeline again through pressure duct with described sample can (4) parallel join and select the vacuum extractor (5) of device (3), described vacuum extractor includes the first electromagnetic valve (501) and the vacuum pump (502) that are sequentially connected in series by pressure duct；It is characterized in that, described pipeline selects device (3) to include dry gas pipeline and the dampness pipeline of mutual parallel join, and wherein, described dry gas pipeline includes the second electromagnetic valve (301) being placed on pressure duct passage；Check valve (302) that described dampness pipeline includes being sequentially connected in series by pressure duct, vacuum liquid bottle (303), the 3rd electromagnetic valve (304)；The inlet end of described vacuum liquid bottle (303) mesohigh pipeline is connected to a filtering plug (305) and is positioned under bottle liquid surface, and the outlet side vicinal of described vacuum liquid bottle (303) mesohigh pipeline is in bottle on liquid surface.
2. a kind of vacuum line system for gas sampling according to claim 1, it is characterized in that, also include one in parallel with described sample can (4) after be connected to described pipeline again through pressure duct and select the pressure-display device (6) of device (3), described pressure-display device (6) includes the 4th electromagnetic valve (601) and the vacuometer (602) that are sequentially connected in series by pressure duct.
3. a kind of vacuum line system for gas sampling according to claim 1, it is characterized in that, also include one with described sample can (4) parallel join after be connected to described pipeline again through pressure duct and select the relief valve (7) on device (3).
4. a kind of vacuum line system for gas sampling according to claim 1, it is characterized in that, also include one with the silencing means (8) selecting device (3) to be connected again through pressure duct and described pipeline after described sample can (4) parallel connection, pressure transducer (801) that described silencing means (8) includes being sequentially connected in series by pressure duct, the 5th electromagnetic valve (802), deafener (803).
5. the method that the vacuum line system utilized described in claim 1 carries out gas sampling, it is characterised in that including:
Preparation process, is connected to inlet one-way valve (1) by outside hyperbaric environment, then utilizes vacuum extractor (5) by vacuum line system vacuum pumping state；
Aeration step, opens inlet one-way valve (1), utilizes pipeline to select device (3) to inflate to sample can (4)；
Pump step, closes inlet one-way valve (1), opens the first electromagnetic valve (501), uses vacuum pump (502) by system vacuum pumping state.
6. the method utilizing vacuum line system to carry out gas sampling according to claim 5, it is characterized in that, what be filled with in described aeration step is dry gas, and this aeration step farther includes: closes the 3rd electromagnetic valve (304), opens the second electromagnetic valve (301).
7. the method utilizing vacuum line system to carry out gas sampling according to claim 5, it is characterized in that, what be filled with in described aeration step is dampness, and this aeration step farther includes: close the second electromagnetic valve (301), opens the 3rd electromagnetic valve (304).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410349928.0A CN104075915B (en) | 2014-07-22 | 2014-07-22 | A kind of vacuum line system for gas sampling and method |
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| CN201410349928.0A CN104075915B (en) | 2014-07-22 | 2014-07-22 | A kind of vacuum line system for gas sampling and method |
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| CN104075915A CN104075915A (en) | 2014-10-01 |
| CN104075915B true CN104075915B (en) | 2016-07-06 |
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| CN107641596A (en) * | 2017-09-28 | 2018-01-30 | 上海国强生化工程装备有限公司 | Multichannel automatic ration sterile sampling device and the bioreactor with the device |
| CN109500025B (en) * | 2018-10-16 | 2020-09-25 | 武汉聚合信环保科技有限公司 | Automatic tank cleaning instrument and sampling tank cleaning method |
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| CN2859527Y (en) * | 2005-09-16 | 2007-01-17 | 福建省福州电业局 | Automatic degassing sampling device for insulating oil chromatographic analysis |
| CN102410942A (en) * | 2011-07-25 | 2012-04-11 | 迈瑞尔实验设备（上海）有限公司 | Online sampling system |
| CN204008237U (en) * | 2014-07-22 | 2014-12-10 | 武汉市天虹仪表有限责任公司 | A kind of vacuum line system for gas sampling |
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