CN205861539U - A kind of for the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4gas monitoring system - Google Patents
A kind of for the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4gas monitoring system Download PDFInfo
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- CN205861539U CN205861539U CN201620735817.8U CN201620735817U CN205861539U CN 205861539 U CN205861539 U CN 205861539U CN 201620735817 U CN201620735817 U CN 201620735817U CN 205861539 U CN205861539 U CN 205861539U
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Abstract
This utility model relates to a kind of for the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4Gas observation system, its architectural feature CH based on integration chamber output spectrum technology4Gas on-line analysis system, meanwhile, by adding Venturi tube above gas skirt, Venturi tube internal gas pressure stably starts to collect gas, by the CH collected in gas skirt4Gas is introduced directly into optical resonator and carries out concentration analysis.This utility model solves current In Permafrost Regions of Qinghai-xizang Plateau thermokarst lake pool CH4The problems such as gas-monitoring is big by natural conditions and artifical influence factor, cost of observation is high, and the data continuity obtained is strong and regularity is poor, it is achieved that the thermokarst lake pool, Permafrost Area CH4The monitoring that flux is automatically, continuous, resolution is higher, provides strong technical support and data accumulation for explaination In Permafrost Regions of Qinghai-xizang Plateau further to Global climate change response.
Description
Technical field
This utility model relates to one and is applicable to the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4Gas monitoring system.
Background technology
Permafrost Area is very sensitive to climate change, is climate change " amplifier ", this region CH4The release of gas
Important role is play during global carbon.With climate change, Permafrost Area land surface emissivity produces notable change,
The hydrothermal reaction coupling process of the soil body itself changes, and causes minimizing and the destruction of physical protection layer thereof of frozen soil organic matt e r import,
Level of ground water declines, and bottom permafrost active layer, the moisture supersaturation time increases, and forms the anaerobic environment that temperature is higher, makes frozen soil soil
CH is produced in earth microorganism4Speed increases, and temperature raises and causes frozen soil thaw depth to increase, and causes a large amount of CH4Gas discharges, and accelerates
Positive feedback between climate change.Therefore, CH4The response investigations of global warming is being become a new hot fields
And advanced subject.
Qinghai-Tibet Platean is predicted as the Typical Representative of low latitudes high mountain permafrost, the assessment for Future Climate Change
Tool is of great significance, double by global warming and mankind's activity of quantity and the considerable thermokarst lake pool of area on plateau
Ghost image rings, and the thermokarst lake pool discharges a large amount of CH4Gas, this for accurately measuring and calculating and the climate change in carbon storehouse, Qinghai-Tibet Platean to for many years
The feedback effect of permafrost region has a very big impact, and the slight fluctuations of weather will produce disturbance to its ecosystem, and then beats
Broken Carbon balance process and the stability in carbon storehouse.Therefore, In Permafrost Regions of Qinghai-xizang Plateau thermokarst lake pool CH4The research of release becomes this
The research emphasis in field and focus.
The thermokarst lake pool is the special geomorphic unit that In Permafrost Regions of Qinghai-xizang Plateau is formed, and refers in natural or anthropic factor
Under the influence of, underground ice layer melts, and melt water macerate enters or converges at depression and formed, and is that ever-frozen ground melted at alternative freezing
The product gradually formed in journey, in In Permafrost Regions of Qinghai-xizang Plateau extensive development.The work on plateau along with whole world change and the mankind
This pool, the lake quantity caused by water-heat process change of dynamic increase gets more and more, and rate of development substantially speeds, and scale has significantly
Increase trend.This thermokarst lake pool major developmental is in alpine meadow, owing to the formation on the thermokarst lake pool causes Hu Tang and surrounding
Vegetation occur degenerating, occur that long-term or seasonal hydrops destroys the hydro-thermal local equilibrium of frozen soil simultaneously, ecological to grassy marshland
Environment affects.
The thermokarst lake of Permafrost Area is different due to its history of forming, growth course, and its size differs, hydrops
The degree of depth is the most different.Some thermokarst lake depth of accumulated water less than year maximum freeze ice layer thickness, dead season lake water all freeze to
Lakebed, lakebed temperature ＜ 0 DEG C, melt layer will not be formed bottom this thermokarst lake, but under lake, ever-frozen ground ground temperature can be over time
Increase and raise；The other thermokarst lake depth of water is more than year maximum ice layer thickness, and dead season, lake water not exclusively freezed to lakebed, lake
End temperature ＞ 0 DEG C, does not has frozen lake water gentle local ever-frozen ground structure over the ground to produce significant impact, lakebed in the winter time
Under may form melt layer.The formation and development of melt layer is to the physics of around thermokarst lake and its underpart soil layer, chemistry, biology
Character and geomorphic process produce very important impact, and hot thaw collapse may be caused to fall into and Permafrost Degeneration.Meanwhile,
When warm season ice sheet melts, thermokarst lake discharges a large amount of CH4Gas, adds high altitude localities CH4Year circulating load, to weather
Warm generation positive effect.
At present, due to, In Permafrost Regions of Qinghai-xizang Plateau exists: 1) harsh climate condition, relatively low temperature, very long winter
Season, the most windy；2) the thermokarst lake pool was longer for ice period, up to 6 ~ 7 months as long as；3) thermokarst lake pool kind is more, dissimilar
CO is discharged between the thermokarst lake pool2/CH4There is notable difference in speed, cycle；4) logistics supply difficulty etc. reason, much in temperate zone,
The water body CO that torrid zone application is ripe2/CH4Gas collecting monitoring system is difficult to carry out the work in In Permafrost Regions of Qinghai-xizang Plateau, it is impossible to
Obtain high-resolution (30min), the observation data of long sequence (for many years).Therefore, current home and abroad research worker is to Qinghai-Tibet Platean
The thermokarst lake pool, Permafrost Area CO2/CH4The accurate quantification of gas becomes the bottleneck of this research field, the most directly, in situ
The thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau natural water is discharged CO2/CH4Gas carries out the difficulty that layering is collected in difficulty, urgently
This problem need to be solved from technological layer.To the thermokarst lake pool CH that acquisition quality and resolution are higher4Flux data, for Qinghai-Tibet
The thermokarst lake pool, Plateau Permafrost Regions Carbon cycle research work provides technical support.
Summary of the invention
In view of above-mentioned, the purpose of this utility model is to provide a kind of for the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau
CH4Gas observation system.This system is according to the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4Gas Drainage feature, utilizes off-axis long-pending
Divide chamber output spectrum technology, to the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4Gas effectively catches, accurately measures, purport
Obtaining the thermokarst lake pool CH that seriality is strong, resolution is higher and the quality of data is effectively controlled4Flux data, for relevant section
Learn research and basic data is provided, promote the development of this area's Carbon cycle research.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of for the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4Gas observation system, is by computer, constant temperature protection
Case, PVC insulation material, 1# functional generator, semiconductor laser controller, DFB type semiconductor laser with tunable, Fiber isolation
Device, fiber optic splitter, optical fiber collimator, 1# chamber mirror, vacuum pump, discharge/scale, support, photographic head, temperature probe, wavelength
Meter, data collecting card, piezoelectric transducer, photodetector, 2# chamber mirror, piezoelectric energy-conversion drive power supply, optical resonator, soft lead
Trachea, Venturi tube, float, hard airway, collection air valve, gas skirt are constituted.Constant temperature guard box inwall is equipped with PVC thermal insulating material
Material, in constant temperature guard box, 1# functional generator, semiconductor laser controller, DFB type semiconductor laser with tunable, optical fiber every
Depend on from device, fiber optic splitter, optical fiber collimator, 1# chamber mirror, optical resonator, piezoelectric transducer, photodetector and 2# chamber mirror
Secondary series connection, band meter connects data collecting card and fiber optic splitter, optical fiber collimator, optical resonator, piezoelectric transducer, photoelectricity
Detector is in parallel, and 2# functional generator drives power supply to be connected with piezoelectric transducer and piezoelectric energy-conversion again, the CH of formation4Gas analysis
System is placed in the top of support, and computer is placed on constant temperature guard box, is connected with data collecting card；Vacuum pump and discharge/mark
Chi is joined directly together, and discharge/scale is collected being connected of air valve with on gas skirt by soft air duct, and gas skirt arranges Wen
Pipe and float, float occupy in water level, and photographic head and temperature probe are fixed on discharge/scale, and hard airway connects collection
Two collection air valves on trachea/scale left and right gas skirt.
Advantage of the present utility model and providing the benefit that:
1. avoid the human activity interference effect to test plot.This utility model realizes unmanned value by gas gathering system
In the case of keeping, automatically obtain the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4 gas, and carry out on-line real time monitoring.
2. reduce the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4Gas-monitoring experimentation cost.This utility model runs
During need not staff and carry out real time sample analysis work at the scene, by current In Permafrost Regions of Qinghai-xizang Plateau thermokarst lake
Pool CH4 gas-monitoring test, it is generally required to four staff, a chassis (picks testing crew from accommodation venue to test sample
Ground and roping test equipment), could normally carry out test, every day, cost was at about 2000 yuan.After this utility model is implemented, no
Need artificially to do experiment to scene, greatly reduce human cost, save testing expenses.
It is relatively strong, regular preferably that another one main advantage the most of the present utility model can obtain seriality exactly, point
The thermokarst lake pool, the In Permafrost Regions of Qinghai-xizang Plateau CH that precision that resolution is higher is higher4Flux data.This melts for quantitative research heat
The pool, lake carbon emission on the contribution of whole In Permafrost Regions of Qinghai-xizang Plateau carbon emission, affect tool and be of great significance, for recognizing
The stability assessment of the development trend and carbon base in soil thereof of knowing following grassland in Qinghai-Tibetan Plateau Carbon cycle plays certain
Effect.
Accompanying drawing explanation
Fig. 1 is this utility model schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings, technical solutions of the utility model will be described further again.
As it is shown in figure 1, it is a kind of for the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4Gas observation system, is by calculating
Machine 1, constant temperature guard box 2, PVC insulation material 3,1# functional generator 4, semiconductor laser controller 5, DFB type is tunable partly leads
Body laser 6, fibre optic isolater 7, fiber optic splitter 8, optical fiber collimator 9,1# chamber mirror 20, vacuum pump 10, discharge/scale
11, support 12, photographic head 14, temperature probe 15, band meter 16, data collecting card 17, piezoelectric transducer 18, photodetector
19,2# chamber mirror 20 ", piezoelectric energy-conversion drive power supply 21, optical resonator 22, soft air duct 23, Venturi tube 24, float 25, hard
Matter airway 26, collection air valve 27 and gas skirt 28 are constituted.Constant temperature guard box 2 inwall has PVC insulation material 3.In casing, 1#
Functional generator 4, semiconductor laser controller 5, DFB type semiconductor laser with tunable 6, fibre optic isolater 7, fiber optic splitter
8, optical fiber collimator 9,1# chamber mirror 20, optical resonator 22, piezoelectric transducer 18,2# chamber mirror 20 " connect with photodetector 19,
Optical resonator 22 is by high reflectance plano-concave mirror M1, the M2 composition that two pieces of radius of curvature are 1.5 m, and high reflectance plano-concave mirror is long
It is 38 cm.The concave surface of 1# chamber mirror 20 and 2# chamber mirror 20 ' is coated with highly reflecting films, and near 1315nm, reflectance is about 99.7%；
Chamber mirror M2 is fixed on piezoelectric transducer (PZT) 18, is carried in the voltage on piezoelectric transducer PZT18 by scanning, it is achieved
Micro-extension and contraction control to piezoelectric transducer 18 PZT, finally realizes the micro scanning to optical resonator 22 length, makes laser week
Phase property be coupled to optical resonator 22.Band meter 16 connects data collecting card 17 and fiber optic splitter 8, optical fiber collimator 9, pressure
Electric transducer 18, photodetector 19 are in parallel, 2# functional generator 4 " drives power supply with piezoelectric transducer 18 and piezoelectric energy-conversion again
21 connect, the CH of above-mentioned formation4Gas analysis system is placed in the top of support 12, and computer 1 is placed above constant temperature guard box 2,
It is connected with data collecting card 17；Vacuum pump 10 and discharge/scale 11 are joined directly together, and discharge/scale 11 is by soft inducing QI
Pipe 23 collects being connected of air valve 27 with on gas skirt 28, and gas skirt 28 arranges Venturi tube 24 and float 25, and float 25 occupy water
In position 13, photographic head 14 and temperature probe 15 are fixed on discharge/scale 11, and hard airway 26 connects discharge/scale
Two collection air valves 27 on about 11 gas skirts 28.
In implementation process, a whole set of CH4Gas analysis system support 12 is placed on In Permafrost Regions of Qinghai-xizang Plateau typical heat
On the Rong Hu pool, online CH4Gas analysis system is placed in above support 12, is fixed on constant temperature guard box 2 internal, during work, and will collection
Gas hood 28 submerges in the water body of the pool, lake, is slowly deposited to specify position, after waiting that Venturi tube 24 internal gas pressure is stable, opens collection air valve
27 and vacuum pump 10 and CH4Gas on-line analysis system, equipment self-inspection complete after automatically into measure boundary.Use center output wave
Light source made by the tunable DFB semiconductor laser 6 of a length of 1315 nm, and (laser instrument is by LDC-3724B type Laser Power Devices control
System), injection current, the functional generator 4 being connected with laser controlling power supply control, functional generator 4 send instruction, half
Conductor Laser controller controls DFB type semiconductor laser with tunable and sends light source.Swash for preventing bulk of optical feedback from affecting quasiconductor
The duty of light device, from the laser of semiconductor laser 6 output, first passes through a fibre optic isolater 7, then through fiber beam splitting
Device 8 is divided into two bundles, and a branch of optical fiber is introduced directly into band meter 16, another bundle coupling after optical fiber collimator 9 and 1# chamber mirror 20 focuses on
Closing optical resonator 22, the optical signal that finally will transmit through optical resonator 22 focuses on photodetector 19, through photodetection
Device 19 after being converted into the signal of telecommunication incoming data collecting card 17 and computer data analyze system 1 and do at further data analysis
Reason.
Gas skirt 28 is connected by hard airway 26 with a scale with Venturi tube 24, and gas skirt 28 and Venturi tube 24 are fixed
On float 25, decreasing because strong wind, rainy weather is to CH in gas skirt 284The impact of concentration change.Photographic head 14 and temperature
Degree probe 15 is fixed on discharge/scale 11.During work, gas skirt 28 is submerged in water, discharge/scale that a pipe is dual-purpose
11 move down, and are slowly deposited to designated depth, and temperature probe 15 accurately measures the water temperature of certain depth of water, and thermokarst lake discharges
Go out a large amount of CH4Gas, waits Venturi tube 24 internal gas pressure stably to start to collect gas, imports vacuum pump 10, and vacuum pump 10 and discharge/
Scale 11 is joined directly together, the CH that will collect in gas skirt 284Gas is introduced directly into optical resonator 22 and carries out concentration analysis.With
Time photographic head 14 one-tenth accurately reflect thermokarst lake pool bed mud and water body CH4The imaging of release process composition thermokarst lake pool water body environment.
Claims (1)
1. one kind is used for the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4Gas observation system, is by computer (1), constant temperature protection
Case (2), PVC insulation material (3), 2# functional generator (4), semiconductor laser controller (5), DFB type tunable semiconductor swash
Light device (6), fibre optic isolater (7), fiber optic splitter (8), optical fiber collimator (9), 1# chamber mirror (20) vacuum pump (10), gas collection
Pipe/scale (11), support (12), photographic head (14), temperature probe (15), band meter (16), data collecting card (17), piezoelectricity change
Can device (18), photodetector (19), (20 "), piezoelectric energy-conversion drive power supply (21), optical resonator (22), soft to 2# chamber mirror
Airway (23), Venturi tube (24), float (25), hard airway (26), collection air valve (27), gas skirt (28) are constituted, permanent
Temperature guard box (2) inwall is equipped with PVC insulation material (3), in constant temperature guard box (2), and 1# functional generator (4), semiconductor laser
Controller (5), DFB type semiconductor laser with tunable (6), fibre optic isolater (7), fiber optic splitter (8), optical fiber collimator
(9), (20 ") are successively for 1# chamber mirror (20), optical resonator (22), piezoelectric transducer (18), photodetector (19) and 2# chamber mirror
Series connection, band meter (16) connects data collecting card (17) and fiber optic splitter (8), optical fiber collimator (9), optical resonator
(22), piezoelectric transducer (18), photodetector (19) in parallel, 2# functional generator (4 ") again with piezoelectric transducer (18) and pressure
Electricity transducing drives power supply (21) to connect, the CH of formation4Gas analysis system is placed in the top of support (12), and computer (1) is placed
On constant temperature guard box (2), it is connected with data collecting card (17)；Vacuum pump (10) and discharge/scale (11) are joined directly together, gas collection
Pipe/scale (11) is collected being connected of air valve (27) on gas skirt (28) by soft air duct (23), and gas skirt sets on (28)
Putting Venturi tube (24) and float (25), float (25) occupy in water level (13), and photographic head (14) and temperature probe (15) are fixed on
On discharge/scale (11), hard airway (26) connects two collection air valves on discharge/scale (11) left and right gas skirt (28)
Door (27).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620735817.8U CN205861539U (en) | 2016-07-13 | 2016-07-13 | A kind of for the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4gas monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620735817.8U CN205861539U (en) | 2016-07-13 | 2016-07-13 | A kind of for the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4gas monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN205861539U true CN205861539U (en) | 2017-01-04 |
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| CN201620735817.8U Expired - Fee Related CN205861539U (en) | 2016-07-13 | 2016-07-13 | A kind of for the thermokarst lake pool, In Permafrost Regions of Qinghai-xizang Plateau CH4gas monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356726A (en) * | 2017-08-22 | 2017-11-17 | 中国科学院寒区旱区环境与工程研究所 | Permafrost Degeneration process chamber simulation system |
| CN111196337A (en) * | 2020-03-18 | 2020-05-26 | 江苏工程职业技术学院 | Distributed solar and wind energy plateau frozen soil hot-melt lake floating device, system and working method |
| CN112255703A (en) * | 2020-10-12 | 2021-01-22 | 中国地质科学院地球物理地球化学勘查研究所 | Plateau hot karst lake identification method based on gas dissipation cause |
-
2016
- 2016-07-13 CN CN201620735817.8U patent/CN205861539U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356726A (en) * | 2017-08-22 | 2017-11-17 | 中国科学院寒区旱区环境与工程研究所 | Permafrost Degeneration process chamber simulation system |
| CN107356726B (en) * | 2017-08-22 | 2023-05-12 | 中国科学院西北生态环境资源研究院 | Indoor simulation system for permafrost degradation process |
| CN111196337A (en) * | 2020-03-18 | 2020-05-26 | 江苏工程职业技术学院 | Distributed solar and wind energy plateau frozen soil hot-melt lake floating device, system and working method |
| CN112255703A (en) * | 2020-10-12 | 2021-01-22 | 中国地质科学院地球物理地球化学勘查研究所 | Plateau hot karst lake identification method based on gas dissipation cause |
| CN112255703B (en) * | 2020-10-12 | 2022-04-12 | 中国地质科学院地球物理地球化学勘查研究所 | Plateau hot karst lake identification method based on gas dissipation cause |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20180713 |