CN111308037A

CN111308037A - Water surface carbon emission measuring device capable of freely moving

Info

Publication number: CN111308037A
Application number: CN201911370632.6A
Authority: CN
Inventors: 康晓明; 闫钟清; 康恩泽; 王金枝; 张骁栋; 李勇; 颜亮; 张克柔; 吴海东
Original assignee: Research Institute of Forestry New Technology of Chinese Academy of Forestry
Current assignee: Research Institute of Forestry New Technology of Chinese Academy of Forestry
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-06-19

Abstract

The invention discloses a freely movable water surface carbon emission measuring device, which is characterized in that a novel environment-friendly plastic foam material floating plate is connected with a supporting ship-imitating device provided with a motor and a propeller, so that the flexibility of measurement at different water surface positions is realized, and a better fixing effect is achieved; the fixed automatic breathing room that opens and shuts on the floating plate, then be connected with quick greenhouse gas analysis appearance, carry out quick, automatic and real-time data transmission to the carbon emission of water, very big guarantee the accuracy and the continuity of data.

Description

Water surface carbon emission measuring device capable of freely moving

Technical Field

The invention relates to an in-situ and continuous measuring device for carbon flux of a water-gas interface, in particular to a freely movable water surface carbon emission measuring device.

Background

The copenhagen protocol states that "climate change is one of the most significant challenges currently facing humans, and global carbon emissions must be substantially reduced. Reducing the content of greenhouse gases in the atmosphere and restraining climate warming become global consensus, and scientific and quantitative evaluation of greenhouse gas emission is the basis for establishing an international greenhouse gas emission reduction framework, determining reasonable emission reduction responsibility of each country and deploying international emission reduction actions. Greenhouse gases are gases that absorb the solar radiation reflected by the ground in the atmosphere and re-emit the radiation, and their effect is to make the earth surface warmer, similar to the effect of a greenhouse that traps solar radiation and heats the air in the greenhouse, the effect of such greenhouse gases making the earth warmer is called "greenhouse effect". Carbon dioxide (CO)₂) Nitrous oxide (N)₂O), methane (CH)₄) Etc. are the major greenhouse gases in the earth's atmosphere.

By measuring the greenhouse gas flux of different ecosystems, the determination of the carbon source/sink function of each ecosystem is a basic premise for predicting the global warming trend. At present, a great deal of researches on carbon flux of land ecosystems such as forests, grasslands, farmlands, peat lands, deserts and the like exist, carbon emission measurement of aquatic ecosystems such as riverbank wetlands or inland water bodies is difficult, the existing measurement methods are not uniform, and data have large errors. How to control the carbon emission of the aquatic ecosystem becomes a problem of important research, so the research of the in-situ and continuous measuring device for enhancing the carbon flux of the water-gas interface has very important significance for the current carbon cycle and global climate change research.

In the prior art, floating flux box-gas chromatography is commonly used for carbon emission monitoring of aquatic ecosystems. The patent related to the monitoring of greenhouse gas emission at the water-gas interface comprises a measuring method for greenhouse gas emission amount of flowing water body (application number: 201110167356.0), an in-situ monitoring method for methane gas flux at the water-air interface (application number: 2010102737832), and a measuring box and a measuring method for measuring greenhouse gas emission flux on the water surface (application number: 2014100560785).

The method is characterized in that ① needs to be stored by a small bottle or an air bag and transported back to a laboratory for monitoring when an air suction syringe is used for gas collection, the time consumption is long, the detection accuracy is greatly influenced, ② cannot realize automatic continuous observation of carbon emission, larger errors exist, and a common floating device of ③ cannot realize automatic movement of the water surface, is difficult to realize quick multi-point measurement, and can take time to move back and forth or buckle, thereby causing inaccurate flux calculation and more flux calculation.

Disclosure of Invention

The system utilizes the integrated floating flux box, the telescopic bracket and the on-line gas monitoring equipment to realize the automatic and continuous monitoring of the concentration of gases such as carbon dioxide, methane and the like on the water-gas interface, shortens the analysis period, improves the monitoring precision, saves manpower and material resources, and provides technical support for large-area and long-term in-situ monitoring of the release flux of the greenhouse gas of the water body.

The invention is realized by the following technical scheme: the utility model provides a survey device is discharged to surface of water carbon that can freely remove, includes that EVA floats the board, the intermediate position that floats the board runs through to be inserted has the PVC pipe, and PVC pipe partly exposes the surface of water, and partly stretches into under water, and PVC pipe exposes partial sealing connection of surface of water and has automatic respiratory chamber that opens and shuts, respiratory chamber passes through the pipeline and links to each other with quick greenhouse gas analyzer, realizes the automatic quick monitoring that carbon discharged.

The EVA floating plate is square, and each corner on the square floating plate is provided with a handle.

The diameter of the PVC pipe is 20cm, the total height is 40cm, the upper part of the floating plate is 10cm, the lower part of the floating plate is 20cm, and the PVC pipe is sleeved with a rubber ring and fixed on the upper surface of the floating plate.

The breathing chamber capable of being automatically opened and closed is fixed on the floating plate and buckled on the PVC pipe, so that fixation and sealing are realized.

The invention has reasonable structure, convenient carrying and high stability, can shorten the sampling time and ensure the sampling precision, and is suitable for CH between water bodies and atmosphere taking paddy fields, wetlands, marshlands, lake surfaces, rivers, oceans, sewage and the like as the underlying surfaces₄And CO₂Flux monitoring of (2).

The invention has the technical effects that: (1) the novel environment-friendly plastic foam material floating plate with the lifting handle connected with the telescopic bracket realizes the measurement flexibility under different high-low water level conditions and achieves better fixing effect; (2) the automatic opening and closing breathing chamber is fixed on the floating plate and then is connected with the rapid greenhouse gas analyzer, so that the carbon emission of the water body is rapidly, automatically and real-timely transmitted, and the accuracy and the continuity of data are greatly guaranteed; (3) the whole device has better integrality, and the rapid movement and fixation of multi-point observation on the water surface can be achieved by carrying out remote control on the motor and the like arranged in the imitation ship body, so that the problem that the field monitoring work consumes time and labor is greatly solved.

Drawings

FIG. 1 is a schematic side view of a freely movable water carbon emission measuring device.

The system comprises an LGR-MGGA rapid greenhouse gas analyzer, a propeller, a storage battery, a handle, an EVA (ethylene vinyl acetate) floating plate, a controller, a breathing chamber, a motor, a ship-simulated body, a fixed rubber ring and a PVC (polyvinyl chloride) pipe, wherein the LGR-MGGA rapid greenhouse gas analyzer comprises 1, 2, the propeller, 3, the storage battery, 4, the handle 5, the EVA floating plate, 6, the controller, 7, the breathing chamber, 8.

Detailed Description

The utility model provides a suspending device of survey is discharged to surface of water carbon, its characterized in that floats board 5 including the EVA, the intermediate position of floating the board runs through and has inserted PVC pipe 10, and PVC pipe 10 partly surface of water that exposes, partly stretch into under water, and PVC pipe 10 exposes partial airtight connection of surface of water and opens and shuts respiratory chamber 7 automatically, respiratory chamber 7 passes through the pipeline and links to each other with quick greenhouse gas analysis appearance 1, and the floating board is inlayed and is advanced the imitative hull device 8 that is equipped with built-in motor, and the hull rear side is equipped with screw 2, realizes the free movement at the surface of water.

The EVA floating plate 5 is square, and each edge on the square floating plate is provided with a handle 4.

The diameter of the PVC pipe 10 is 20cm, the total height is 40cm, the upper part of the floating plate is 10cm, the lower part of the floating plate is 20cm, and the upper surface of the floating plate is fixed by a rubber ring 9 sleeved outside the PVC pipe 10.

The floating device for measuring the carbon emission on the water surface is fixed on a ship-imitating device with a propeller and a motor, so that the floating device can move freely. The measuring chamber comprises an upper part and a lower part, the lower part is a hollow cylindrical PVC pipe 10 (the diameter is 20cm, the total height is 40cm, the upper part of the floating plate is 10cm, and the lower part of the floating plate is 20cm) inserted and fixed in the foam plate, the upper part is hermetically connected with an automatic opening and closing breathing chamber, and an LGR-MGGA rapid greenhouse gas analyzer is adopted to measure CH on the water surface₄And CO₂Flux.

Claims

1. The utility model provides a survey device is discharged to surface of water carbon that can freely remove, its characterized in that floats board (5) including EVA, the intermediate position of floating the board runs through to be inserted PVC pipe (10), and PVC pipe (10) partly surface of water that exposes, and partly stretches into under water, and PVC pipe (10) surface of water part sealing connection has automatic respiratory chamber (7) that opens and shuts, automatic respiratory chamber (7) that opens and shuts link to each other with quick greenhouse gas analysis appearance (1) through the pipeline, and the floating board is inlayed on the imitative hull flotation device (8) of built-in motor, afterbody installation screw (2), can realize freely advancing and turning to at the surface of water.

2. The measuring device according to claim 1, wherein the EVA floating plate (5) has a square shape, and a handle (4) is provided at each corner of the square floating plate.

3. The device according to claim 2, wherein the carbon emission at different positions of the water surface can be automatically and continuously measured by the ship-imitating device.

4. The measuring device according to claim 1, wherein the PVC pipe (10) has a diameter of 20cm and a total height of 40cm, wherein the upper part of the floating plate is 10cm, the lower part of the floating plate is 20cm, and the PVC pipe (10) is externally sleeved with a rubber ring (9) to be fixed on the upper surface of the floating plate.