Air cylinder type soil profile gas collector
A technology for gas collection and soil profiling, applied in sampling devices and other directions, can solve problems such as uncertainty, error, blocking gas collection, etc., and achieve the effect of improving test accuracy
A technology for gas collection and soil profiling, applied in sampling devices and other directions, can solve problems such as uncertainty, error, blocking gas collection, etc., and achieve the effect of improving test accuracy
CN102680286AInactive Publication Date: 2012-09-19COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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[0020] First, drill a hole that can accommodate the protective casing 3, the arc-shaped gas outlet 15 and the gas collection pipe 14 in the selected field test sample land without being squeezed; adjust the piston handle 1, so that the rubber piston 5 completely fills the air inlet micropore 6 part and the arc-shaped gas outlet nozzle 15 of the protective sleeve; The air inlet microhole 6 of the casing 3 is consistent with the gas sampling depth range, and then fills the gap between the outer wall of the protective casing 3 and the soil profile with coarse sand, and the filling amount is slightly higher than the air inlet microhole 6 of the protective casing 3. Then, mix the drilled original soil into mud, and backfill it in the hole, so that the protective casing 3 and the gas collection pipe 14 of the collector are closely connected with the soil, so as to prevent the air from diffusing to the air intake of the protective casing. There are 6 micropores; after a certain perio...
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The invention relates to an air cylinder type soil profile gas collector. The air cylinder type soil profile gas collector comprises a piston handle, a dust cap, a protective sleeve, a rubber piston, a suction pipe, a miniature vacuum pump, a gas collection bag, a gas outlet pipe with a needle, a replaceable type filter, a single-channel gas outlet valve and a gas collection pipe, wherein a certain range of gas inlet micro pores are uniformly distributed on the wall on the lower part of the protective sleeve, and the top of the gas collection pipe is connected with the single-channel gas outlet valve. According to the air cylinder type soil profile gas collector, blockage interference of soil particles, water and ice to the gas inlet micro pores can be avoided; soil greenhouse gas within a depth range can be collected, and meanwhile, outside atmosphere can be avoided entering the gas collection pipe; and mobile gas suction equipment consisting of the miniature vacuum pump and the like is utilized to suck gas to increase the quantity of collected gas, so that test errors can be further eliminated, and the test precision can be improved. The air cylinder type soil profile gas collectors can be distributed in soil of different depths to collect soil greenhouse gas of different depth ranges so as to regularly monitor greenhouse gas concentrations of soil profiles within various depth ranges. The air cylinder type soil profile gas collector has the advantages of simple structure and convenience in operation and is suitable for simultaneous observation of multiple points.
Description
technical field [0001] The invention relates to the technical field of test instruments and equipment, in particular to an air cylinder type soil profile gas collector. Background technique [0002] As we all know, it is an indisputable fact that the change of the earth's climate system is mainly characterized by climate warming. Under the background of climate warming, the permafrost in the Qinghai-Tibet Plateau is degraded to varying degrees, which may cause a large amount of soil organic carbon and nitrogen in the permafrost area to be released in the form of greenhouse gases (such as CO 2 and N 2 O, etc.) into the atmosphere, showing a positive feedback effect, therefore, the study of the Qinghai-Tibet Plateau permafrost soil greenhouse gas generation mechanism and influencing factors has important practical significance for controlling greenhouse gas emissions and protecting the ecological environment in permafrost regions. During the period when soil freeze-thaw proc...
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Patent Timeline
19 Sep 2012
Publication
CN102680286A
- IPC
- G01N1/24
- Inventors
- 赵爱国; 陈生云