CN102353560B - Gathering device for gas released by water body and sampling method thereof - Google Patents
Gathering device for gas released by water body and sampling method thereof Download PDFInfo
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- CN102353560B CN102353560B CN201110155238.8A CN201110155238A CN102353560B CN 102353560 B CN102353560 B CN 102353560B CN 201110155238 A CN201110155238 A CN 201110155238A CN 102353560 B CN102353560 B CN 102353560B
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Abstract
The invention, which belongs to the resource and environment technology field, relates to a gathering device for gas released by a water body and a sampling method thereof. The device comprises a floating ball support; a semisphere cylinder gas collection tank is suspended on the floating ball support; a gas outlet is arranged at the top of the tank and a valve is installed; a gas collector is suspended at the top of the support; and an air intake of the gas collector is connected with the gas outlet of the semisphere cylinder gas collection tank and a drain pipe is directly dipped into water. When gas is collected, the device is placed on a sampling point of a water surface; when the valve is opened, the semisphere cylinder gas collection tank is completely immersed into water and gases in the gas collection tank are completely discharged; and gases that are produced by a water body that is below the gas collection tank and is covered by the gas collection tank is gathered along an inner wall of the gas collection tank towards the top of the gas collection tank. According to dewatering and gas collection principles, water in the gas collector is discharged and to-be-measured gases that are released by the water body enter the gas collector, so that a purpose that real-time and automatic collection is carried out on gases released by a water body can be realized. According to the invention, a problem that research work is lacked of applicative closed gas collection equipment can be effectively solved, wherein the research work includes researches on production of gases released by different water bodies, releasing laws and gas components.
Description
Technical field
The invention belongs to technical field of resource environments, it is related to a kind of gathering device for gas released by water body and its method for sampling.
Background technology
It is important greenhouse gases source of release that eutrophication water is generally believed that, such as：CO2、CH4、N2O.In current water body eutrophication degree not
Disconnected rising, and under the environmental background of global warming, people increasingly pay close attention to the release strength change of water body percent of greenhouse gases.In addition, eutrophy
The nitrification-denitrification reaction changing water body generation is one of important channel of water body denitrification, the intermediate gaseous product N of nitrification-denitrification reaction2O and final
Gaseous products N2Release also be subject to more paying close attention to.However, for a long time, lack a kind of effective gathering device for gas released by water body always, make
The progress obtaining this respect is relatively slow.
The method adopting at present is mainly closed chamber method, and it is directly sampled with the inversion casing of sealing, needs for base to be fixed on sampling during sampling
In the bed mud of point, implement and be inconvenient, and the sampler of this method is not in communication with the outside in sampling process, so negative pressure necessarily occurs
Phenomenon, causes the acceleration of gas to volatilize, so that sampled result is not accurate enough.Also have a kind of for water body, the adopting of soil surface escaping gas
Acquisition means, it is a kind of dynamic case method, during sampling, casing is fixed (uncovered inversion), with the gas cylinder Input gas equipped with nitrogen to dynamic acquisition
Case, with nitrogen as flowing carrier, after reaching dynamic equilibrium, that is, after trapped air body former in case has been driven by carrier gas, starts to collect gaseous sample, should
The major defect of method be it be only applicable to that object gas volatile quantity is larger and the very fast situation of evaporation rate under non-nitrogen class gas collection, and water body
Discharging to the gas of atmosphere interface is a relatively slow process, and the object gas gathering have CH4、N2O、N2Deng, therefore develop new more
Accurately and effectively sample devicess and the method for sampling have important practical value.
Content of the invention
The problem existing for prior art, the purpose of the present invention is to propose to a kind of sample collecting is accurate, operation is simple and the convenient water body implemented
Release gas collector and its method for sampling.
The gathering device for gas released by water body that the present invention is developed, its system structure includes ball float support, hemisphere cylinder plenum chamber, gas collecting bottle, air inlet
Pipe, drain pipe, valve；Described ball float support is made up of square ball float base and arch support, and ball float base is connected by ball float and pvc pipe
Form, four on base diagonal ball float supports whole support；Described hemisphere cylinder plenum chamber is used for collecting the gas of water body generation, case
Bottom surface is gas sample collection mouth, and the top of case is provided with gas outlet and equipped with valve, and casing equalizing suspension system is on four sides of ball float support；Described collection
Gas cylinder hang upside down in the top of ball float support, is sealed with rubber closure full of water bottle mouth, thereon to should have air inlet pipe and drain pipe, air inlet pipe and hemisphere
The gas outlet of cylinder plenum chamber is connected, and drain pipe is directly hung down and communicated with water body in water.
The hemisphere cylinder plenum chamber of the present invention can be spliced using hemispherical and cylindrical lucite case.
Described ball float support can be supported using solid foam ball float.
Described gas collecting bottle can be using the glass infusion bottle with rubber closure.
The method of the gas being discharged from water body to atmosphere interface using sampling apparatuses of the present invention collection, its operating procedure is as follows：
The first step, the gathering device for gas released by water body being furnished with ball float support is positioned on water surface sampled point, opens hemisphere cylinder plenum chamber gas outlet
Valve, casing is totally submerged the water body covering certain area in water, after in plenum chamber, gas is completely exhausted out, close valve；
Second step, gas collecting bottle is filled water, and bottleneck is sealed with rubber closure, hangs upside down in ball float cantilever tip, air inlet pipe is gone out with hemisphere cylinder plenum chamber
QI KOU is connected, and drain pipe is directly hung down and communicated with water body in water；
3rd step, after the dissolubility in water reaches saturation, unnecessary gas is precipitated the gas of the lower section water body generation of gas collection Bin covering, forms gas
Bubble, bubble, under buoyancy, is assembled along hemisphere cylinder plenum chamber inwall to top, finally on plenum chamber top, peak collects, according to draining
Gas collection principle, in gas collecting bottle, water is discharged, and the under test gas that water body discharges enter gas collecting bottle, realizes automatically collecting in real time the mesh that water body discharges gas
's.
The present invention has the following advantages that and effect：
(1) major advantage of present device and method is, one is sampler in sampling process (Semi-ball column plenum chamber) by the row of gas collecting bottle
Water pipe is in communication with the outside, it is to avoid due to shortcoming that the acceleration of negative pressure or suppression gas discharge, error are larger in traditional static case method operating process.
Two is not need manually to go the gas extracting in static chamber to be sampled it is achieved that the automatic Real-time Collection of water body gas every one end time, only need by
Sampling bottle delivers to lab analysis.Three is not need to be filled with other gases as carrier it is not necessary to additional power supply, also avoid dynamic case simultaneously
Object gas background valuess higher analysis result distortion caused by method, shortcoming limited by gaseous species can be analyzed.
(2) present device and method, equipment volume is little, composition is simple, with low cost, can accurately and effectively gather from water body to atmosphere interface
The gas being discharged, obtains, by the change of sampling bottle weight, the diffusion flux that unit area water body discharges gas, efficiently solves currently different water bodys
In the research work of gas generated, release rule and its composition, lack the problem of applicable closed gas recovery facility.
Brief description
Fig. 1 is the system construction drawing of the water body gas collecting device of the present invention.
In figure 1. ball float support, 2. gas collecting bottle, 3. air inlet pipe, 4. drain pipe, 5. hemisphere cylinder plenum chamber, 6. valve.
Specific embodiment
The structure of this water body gas collecting device embodiment is as shown in figure 1, its system includes ball float support 1, gas collecting bottle 2, air inlet pipe 3, drain pipe
4th, the component such as hemisphere cylinder plenum chamber 5, valve 6.Ball float support 1 is made up of square ball float base and arch support, and ball float base is by solid
Foam ball float and pvc pipe are formed by connecting, and four on base diagonal ball float supports whole support.Hemisphere cylinder plenum chamber 5 is by hemispherical and circle
The lucite case of cylindricality is spliced, and for collecting the gas being produced by water body, the bottom surface of case is gas sample collection mouth, and the top of case is provided with out
QI KOU equipped with valve 6, casing equalizing suspension system is on four sides of ball float support.Gas collecting bottle 2 is a glass infusion bottle carrying rubber closure, is inverted outstanding
It is hung on the top of ball float support 1, bottleneck is sealed with rubber closure, thereon to should have air inlet pipe 3 and a drain pipe 4, air inlet pipe 3 and hemisphere cylinder gas collection
The gas outlet of case 5 is connected, and drain pipe 4 is directly hung down and communicated with water body in water.
During sampling, the water body gas collecting device being furnished with ball float support 1 is positioned on water surface sampled point, opens hemisphere cylinder plenum chamber 5 gas outlet
Valve 6, casing is totally submerged in water, covers the water body of certain area, after gas in casing is all discharged, close valve 6.Gas collection
Water filled by bottle 2, and bottleneck is sealed with rubber closure, hangs upside down in ball float support 1 top, air inlet pipe 3 is connected with the gas outlet of hemisphere cylinder plenum chamber 5,
Drain pipe 4 is directly hung down and is communicated with water body in water.The gas that the lower section water body of gas collection Bin covering produces is after the dissolubility in water reaches saturation, unnecessary
Gas be precipitated, formed bubble, bubble under buoyancy, along hemisphere cylinder plenum chamber 5 inwall to top assemble, finally on plenum chamber top
End peak collects, and according to draining gas collection principle, the water in gas collecting bottle 2 enters in water body by drain pipe 4, and hemisphere cylinder plenum chamber 5 top is converged
The gas of collection enters in gas collecting bottle 2, thus in real time automatically collecting the gas that water body discharge to atmosphere interface, can continuously, quantitative study water body discharges
Gas produces rule, and the composition of collection analysises output gas.
Claims (4)
1. a kind of gathering device for gas released by water body it is characterised in that include ball float support (1), hemisphere cylinder plenum chamber (5),
Gas collecting bottle (2), air inlet pipe (3), drain pipe (4), valve (6)；Described ball float support (1) is by square ball float bottom
Seat and arch support composition, ball float base is formed by connecting by ball float and pvc pipe, and four on base diagonal ball float supports
Whole support；Described hemisphere cylinder plenum chamber (5) is used for collecting the gas of water body generation, and the bottom surface of case is received for gaseous sample
Ji Kou, the top of case is provided with gas outlet and equipped with valve (6), and casing equalizing suspension system is on four sides of ball float support；Described collection
In the top of ball float support (1), bottleneck is sealed gas cylinder (2) hang upside down with rubber closure, thereon to should have air inlet pipe (3)
With drain pipe (4), air inlet pipe (3) is connected with the gas outlet of hemisphere cylinder plenum chamber (5), drain pipe (4) directly hang down into
Communicate with water body in water.
2. gathering device for gas released by water body according to claim 1 is it is characterised in that described hemisphere cylinder plenum chamber (5)
It is spliced using hemispherical and cylindrical lucite case.
3. gathering device for gas released by water body according to claim 1 is it is characterised in that described ball float support (1) is adopted
Supported with solid foam ball float.
4. gathering device for gas released by water body according to claim 1 is it is characterised in that described gas collecting bottle (2) adopts
Glass infusion bottle with rubber closure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110155238.8A CN102353560B (en) | 2011-06-10 | 2011-06-10 | Gathering device for gas released by water body and sampling method thereof |
| CA2770612A CA2770612C (en) | 2011-06-10 | 2012-03-09 | Device for sampling ebullition and sampling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110155238.8A CN102353560B (en) | 2011-06-10 | 2011-06-10 | Gathering device for gas released by water body and sampling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102353560A CN102353560A (en) | 2012-02-15 |
| CN102353560B true CN102353560B (en) | 2017-02-15 |
Family
ID=45577168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110155238.8A Active CN102353560B (en) | 2011-06-10 | 2011-06-10 | Gathering device for gas released by water body and sampling method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102353560B (en) |
| CA (1) | CA2770612C (en) |
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| CN102608273B (en) * | 2012-03-23 | 2014-07-23 | 重庆大学 | Method for collecting underwater bubbles and method for monitoring underwater bubble flux under hydrodynamic conditions |
| US9983182B2 (en) | 2012-06-29 | 2018-05-29 | Rae Systems (Shanghai) Inc. | Device for sampling and detecting volatile organic compounds in water |
| CN104390815B (en) * | 2013-10-23 | 2017-01-25 | 中国科学院地球环境研究所 | Automatic gas collection method thereof |
| CN104236954B (en) * | 2014-09-19 | 2016-09-14 | 北京工业大学 | Sewage treatment plant processing unit water surface N2the collection device of O and the method for sampling |
| CN105067789B (en) * | 2015-10-01 | 2016-10-05 | 南华大学 | A kind of method and apparatus of open loop type in site measurement water body precipitation rate of radon |
| CN111721592A (en) * | 2015-12-25 | 2020-09-29 | 中国水利水电科学研究院 | Bubble flux collecting device for water-gas interface |
| CN106644609A (en) * | 2017-01-17 | 2017-05-10 | 中国地质科学院岩溶地质研究所 | System for obtaining gas in soil |
| CN106770976B (en) * | 2017-01-22 | 2023-11-03 | 生态环境部南京环境科学研究所 | Automatic detection device for remotely unattended liquid level volatile gas and use method thereof |
| CN107064370A (en) * | 2017-04-26 | 2017-08-18 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of new device for determining water body diffused methane release flux |
| CN108760406A (en) * | 2018-05-16 | 2018-11-06 | 福建师范大学 | A kind of water/sediment interface greenhouse gases collection device |
| CN109387453B (en) * | 2018-10-12 | 2024-04-09 | 水利部交通运输部国家能源局南京水利科学研究院 | Continuous and automatic monitoring device and method for methane bubble release in lakes and reservoirs |
| CN110954532B (en) * | 2019-11-28 | 2021-07-02 | 吉林大学 | Soil nutrient detection device based on visual smell sense |
| CN111013829B (en) * | 2019-12-12 | 2021-11-26 | 西藏华泰龙矿业开发有限公司 | Inflation amount detection device of flotation machine |
| CN113484100A (en) * | 2021-07-03 | 2021-10-08 | 杭州亚太建设监理咨询有限公司 | Greenhouse gas collecting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4166791A (en) * | 1977-08-04 | 1979-09-04 | Marvin Mark C | Sewage gas collection reservoir |
| US4749493A (en) * | 1986-10-07 | 1988-06-07 | Hicks Charles E | Method and apparatus for oxygenating water |
| CN201611318U (en) * | 2009-12-15 | 2010-10-20 | 上海市民办尚德实验学校 | Efficient gas collecting device |
| CN202471679U (en) * | 2012-03-23 | 2012-10-03 | 重庆大学 | Underwater bubble collecting device under hydrodynamic force condition |
| CN202638453U (en) * | 2012-06-14 | 2013-01-02 | 佳木斯大学 | Gas collecting and metering device |
-
2011
- 2011-06-10 CN CN201110155238.8A patent/CN102353560B/en active Active
-
2012
- 2012-03-09 CA CA2770612A patent/CA2770612C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4166791A (en) * | 1977-08-04 | 1979-09-04 | Marvin Mark C | Sewage gas collection reservoir |
| US4749493A (en) * | 1986-10-07 | 1988-06-07 | Hicks Charles E | Method and apparatus for oxygenating water |
| CN201611318U (en) * | 2009-12-15 | 2010-10-20 | 上海市民办尚德实验学校 | Efficient gas collecting device |
| CN202471679U (en) * | 2012-03-23 | 2012-10-03 | 重庆大学 | Underwater bubble collecting device under hydrodynamic force condition |
| CN202638453U (en) * | 2012-06-14 | 2013-01-02 | 佳木斯大学 | Gas collecting and metering device |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2770612C (en) | 2013-03-12 |
| CN102353560A (en) | 2012-02-15 |
| CA2770612A1 (en) | 2012-05-16 |
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