CN204694509U - A kind of halo greenhouse gases flushable type sampling thief - Google Patents

A kind of halo greenhouse gases flushable type sampling thief Download PDF

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Publication number
CN204694509U
CN204694509U CN201520203170.XU CN201520203170U CN204694509U CN 204694509 U CN204694509 U CN 204694509U CN 201520203170 U CN201520203170 U CN 201520203170U CN 204694509 U CN204694509 U CN 204694509U
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CN
China
Prior art keywords
valve
halo
sample
greenhouse gases
sampling thief
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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CN201520203170.XU
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Chinese (zh)
Inventor
姚波
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Chinese Academy of Meteorological Sciences CAMS
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Chinese Academy of Meteorological Sciences CAMS
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Priority to CN201520203170.XU priority Critical patent/CN204694509U/en
Application granted granted Critical
Publication of CN204694509U publication Critical patent/CN204694509U/en
Expired - Fee Related legal-status Critical Current
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Abstract

A kind of halo greenhouse gases flushable type sampling thief.It is by the position of gauge tap valve thus make membrane pump air can be filled with sample can or be extracted out from sample can by air, thus realize the flushing of dissimilar sample can (single port tank and twoport tank) and be filled with ambient atmosphere, and solve the malleation Sampling meeting halo greenhouse gases sampling request, fill up domestic blank.

Description

A kind of halo greenhouse gases flushable type sampling thief
Technical field
The utility model relates to a kind of halo greenhouse gases flushable type sampling thief.
Background technology
Halo greenhouse gases sampling both at home and abroad at present all adopts negative pressure sample mode, and by stainless steel sample can after laboratory is evacuated, experimental point opens sample can in the wild, utilizes the pressure differential of negative pressure and ambient atmosphere in tank to be sucked in sample can by atmospheric sample.This method is without the need to sampling thief, but shortcoming is that (1) cannot gather the sample higher than environment atmospheric pressure; (2) sample size is limited, only can gather the sample of the next sample can volume of ambient atmosphere pressure; (3) ambient atmosphere cannot be utilized to rinse sample can; (4) if sample can leakproofness breaks down in transportation, then the air in transportation may be sucked.
Prior art reference:
Barletta, B., Meinardi, S., Rowland, F.S., et al. Volatile organic compounds in 43 Chinese cities. Atmospheric Environment 39, 5979–5990, 2005.
Zhang Fang, Wang Xinming, easy will is firm. and in the air of area, Pearl River Delta, the concentration feature of HCFC-22 and variation tendency are tentatively observed. ACTA Scientiae Circumstantiae, 26 (6): 987-991,2006.
Innovative point:
Due to most halo greenhouse gas concentration extremely low (ppt magnitude) and concentration change scope can reach 2 orders of magnitude, therefore requirement is proposed to sampling quantity and flushability.The utility model can utilize site environment air to rinse sample can, avoids enriched sample residual in sample can on the impact of sampling.Can gather by membrane pump the sample that pressure is greater than environmental pressure, can be analytic process and more sample is provided, and avoid the pollution that traditional vacuum sample mode may introduce because of gas leakage in transportation.
Summary of the invention
In order to plug a gap, the utility model provides a kind of halo greenhouse gases positive-pressure sampling instrument.System comprises without oily membrane pump 1, filter membrane 1, T-valve 3, unloader 1,1, tensimeter, 1, retaining valve, switch valve 2, mass flow controller 1, and each part 6mm stainless-steel tube connects, and annexation as shown in Figure 1.
The utility model solves the technical scheme that its technical matters adopts:
The applicable two kinds of sample cans of halo greenhouse gases flushable type sampling thief (single port tank and twoport tank), have instantaneous sampling and integration sampling two kinds of patterns.System available field ambient atmosphere rinses sample can, flushing process is divided into two steps: during inflation, air is through directly arriving sample can by pipeline respectively through filter, T-valve, membrane pump etc., air when bleeding in sample can, respectively through T-valve, membrane pump, unloader, is finally drained in air.In gas replenishment process, system can utilize membrane pump that air is filled with sample can by mass flow controller, realizes integration sampling, and the time of integration sampling can be regulated by mass flow controller.If utilize membrane pump that large flow of QI being obstructed is crossed mass flow controller be directly filled with sample can, realize instantaneous sampling.
The beneficial effects of the utility model are, solve the malleation Sampling of applicable dissimilar halo greenhouse gases sample can.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is halo greenhouse gases flushable type sampler samples systematic schematic diagram.
Fig. 2 is that halo greenhouse gases flushable type sampling thief is applied to the inflation of twoport tank and operation schematic diagram of bleeding.Fig. 3 is that halo greenhouse gases flushable type sampling thief is applied to single port tank fundamental diagram.
In Fig. 1: 1, switch valve 1; 2, switch valve 2; 3, sample can; 4, tensimeter; 5, mass rate controls meter; 6, T-valve C; 7, retaining valve; 8, unloader; 9, filter; 10, T-valve B; 11, T-valve D; 12, membrane pump.
Show gas circuit in Fig. 2 to flow to, other are all identical with Fig. 1, only have sample can be twoport tank, add twoport canister incoming gas mouth and gas outlet mark, 13, twoport canister incoming gas mouth; 14, twoport tank gas outlet.
Embodiment
As shown in Figure 1, sampling thief comprises: membrane pump, and mass rate controls meter, particle filtering membrane, tensimeter, blowdown valve, switch valve, T-valve.
As shown in Figure 2, for twoport tank, during flushing, membrane pump is opened, " T-valve B ", " T-valve C " and " T-valve D ", position be respectively " 1 ", " 1 " and " 2 ", twoport tank valve 13 and 14 is all opened, and air is through discharging after rinsing sample can respectively through " filter ", " T-valve D ", " membrane pump ", " T-valve B ".During inflation, the position of " T-valve B ", " T-valve C " and " T-valve D " is respectively " 1 ", " 1 " and " 2 ", sample can air intake valve open, close sample can gas outlet valve, realize instantaneous sampling (" T-valve C " is in 1) or integration sampling (" T-valve C " is in 2) by the position of switch three-way valve C.
As shown in Figure 3, for single port sample can, during flushing, working state of system is divided into " bleeding " and " inflation ".During inflation, the position of " T-valve B ", " T-valve C " and " T-valve D " is respectively " 1 ", " 1 " and " 2 ", single port tank valve is opened, and air is through directly arriving sample can by pipeline respectively through " filter ", " T-valve D ", " membrane pump ", " T-valve B ".When bleeding, the position of " T-valve B " and " T-valve D " is respectively " 2 " and " 1 ", " T-valve C " position is still " 1 ", and the air in sample can, respectively through " T-valve B ", " membrane pump ", " T-valve D ", " unloader ", is finally drained in air.During inflation, " T-valve B " and " T-valve D ", position be respectively " 1 " and " 2 ", realize " instantaneous sampling " (" T-valve C " is in " 1 ") or " integration sampling " (T-valve " C " is in 2) by the diverse location of T-valve C.

Claims (2)

1. a halo greenhouse gases flushable type sampling thief, comprise switch valve, T-valve, unloader, retaining valve, tensimeter, filter, membrane pump, mass rate controls the halo greenhouse gases flushable type sampling thief counting one, it is characterized in that, two sample cans are respectively by stainless-steel tube and switch valve 1, switch valve 2 connects, both connect the two ends of a stainless steel threeway respectively, 3rd mouth of threeway is connected with four-way by stainless-steel tube, other three mouths Bonding pressure table 4 respectively of four-way, T-valve 6, and connecting tee valve 6 after quality of connection flow control meter 5 and retaining valve 7, 3rd mouth of T-valve 6 connects a stainless steel four-way, other three directions of stainless steel four-way connect unloader 8 respectively, T-valve 10 and T-valve 11, T-valve 10 is connected with filter 9 by threeway with another port of T-valve 11, T-valve 10 is then connected gas outlet and the air intake of membrane pump 12 respectively with the 3rd port of T-valve 11.
2. a kind of halo greenhouse gases flushable type sampling thief according to claim 1, is characterized in that, the pipeline be connected between each parts is 6mm stainless-steel tube.
CN201520203170.XU 2015-04-07 2015-04-07 A kind of halo greenhouse gases flushable type sampling thief Expired - Fee Related CN204694509U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520203170.XU CN204694509U (en) 2015-04-07 2015-04-07 A kind of halo greenhouse gases flushable type sampling thief

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520203170.XU CN204694509U (en) 2015-04-07 2015-04-07 A kind of halo greenhouse gases flushable type sampling thief

Publications (1)

Publication Number Publication Date
CN204694509U true CN204694509U (en) 2015-10-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520203170.XU Expired - Fee Related CN204694509U (en) 2015-04-07 2015-04-07 A kind of halo greenhouse gases flushable type sampling thief

Country Status (1)

Country Link
CN (1) CN204694509U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105954071A (en) * 2016-06-03 2016-09-21 中国人民解放军装备学院 Miniaturized sample collecting device used for gas sampling
CN110146349A (en) * 2019-06-06 2019-08-20 中国气象科学研究院 A kind of adding pressure type air sampling equipment and its method of sampling
CN112557130A (en) * 2021-02-28 2021-03-26 中国工程物理研究院核物理与化学研究所 Method for filling gas into gas detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105954071A (en) * 2016-06-03 2016-09-21 中国人民解放军装备学院 Miniaturized sample collecting device used for gas sampling
CN110146349A (en) * 2019-06-06 2019-08-20 中国气象科学研究院 A kind of adding pressure type air sampling equipment and its method of sampling
CN112557130A (en) * 2021-02-28 2021-03-26 中国工程物理研究院核物理与化学研究所 Method for filling gas into gas detector

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20151007

Termination date: 20170407