CN116559384A - Reservoir ambient gas monitoring device and reservoir ambient gas monitoring method - Google Patents
Reservoir ambient gas monitoring device and reservoir ambient gas monitoring method Download PDFInfo
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- CN116559384A CN116559384A CN202310835185.7A CN202310835185A CN116559384A CN 116559384 A CN116559384 A CN 116559384A CN 202310835185 A CN202310835185 A CN 202310835185A CN 116559384 A CN116559384 A CN 116559384A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 47
- 238000012806 monitoring device Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 230000007613 environmental effect Effects 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims description 288
- 238000009423 ventilation Methods 0.000 claims description 47
- 238000007667 floating Methods 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 14
- 239000011261 inert gas Substances 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000001272 nitrous oxide Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2294—Sampling soil gases or the like
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
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Abstract
The invention provides a reservoir ambient gas monitoring device and a reservoir ambient gas monitoring method. The reservoir environmental gas monitoring device of the invention comprises: the gas exchange part comprises a first shell and a filter membrane, the filter membrane is arranged on the first shell, the filter membrane and the first shell define a first cavity, and gas in water can enter the first cavity through the filter membrane; the gas monitoring part comprises a gas analyzer and a gas inlet pipeline, wherein an inlet of the gas analyzer is communicated with the first cavity through the gas inlet pipeline, and the gas analyzer is used for analyzing the components of the gas introduced into the gas analyzer; the fixing part can enter water, and the gas exchange part is arranged on the fixing part and can enter water along with the fixing part. Therefore, the reservoir ambient gas monitoring device has the advantages of convenience in operation and accurate monitoring result.
Description
Technical Field
The invention relates to the technical field of environmental monitoring, in particular to a reservoir environmental gas monitoring device and a reservoir environmental gas monitoring method.
Background
The water and electricity engineering has various benefits such as flood control, power generation and shipping, the construction of the water and electricity engineering forms a reservoir, various potential environmental problems such as eutrophication of water body, water temperature layering, reduction of dissolved oxygen concentration, emission of greenhouse gases and the like are brought, and gases such as methane, carbon dioxide, nitrous oxide, oxygen, ammonia and the like dissolved in the water body of the reservoir are important environmental indicator factors of the water body.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. For this reason, the embodiment of the invention provides a reservoir ambient gas monitoring device and a reservoir ambient gas monitoring method.
The reservoir ambient gas monitoring device of the embodiment of the invention comprises:
the gas exchange part comprises a first shell and a filter membrane, the filter membrane is arranged on the first shell, the filter membrane and the first shell define a first cavity, and gas in water can enter the first cavity through the filter membrane;
the gas monitoring part comprises a gas analyzer and a gas inlet pipeline, wherein an inlet of the gas analyzer is communicated with the first cavity through the gas inlet pipeline, and the gas analyzer is used for analyzing the components of the gas introduced into the gas analyzer;
the fixing part can enter water, and the gas exchange part is arranged on the fixing part and can enter water along with the fixing part.
In some embodiments, the fixing portion includes a first floating body, a first rope body and a sinking block, the first floating body can float on the water surface, the gas analyzer is arranged on the first floating body, the sinking block can sink into the water, a first end portion of the first rope body is connected with the first floating body, a second end portion of the first rope body is connected with the sinking block, and the gas exchange portion is arranged on the first rope body and can enter into the water along with the first rope body.
In some embodiments, the gas monitoring portion further comprises a gas outlet conduit through which the outlet of the gas analyzer communicates with the first cavity.
In some embodiments, the plurality of gas exchange portions are arranged on the first rope at intervals along the extending direction of the first rope.
In some embodiments, the air inlet pipeline comprises an air inlet main pipe and a plurality of air inlet branch pipes, an outlet of the air inlet main pipe is communicated with an inlet of the gas analyzer, the inlet of the air inlet main pipe is communicated with a plurality of air inlet branch pipes, the plurality of air inlet branch pipes are communicated with the first cavities of the plurality of gas exchange parts in a one-to-one correspondence manner, and each air inlet branch pipe is provided with a first on-off valve;
the gas outlet pipeline comprises a gas outlet main pipe and a plurality of gas outlet branch pipes, wherein the inlet of the gas outlet main pipe is communicated with the outlet of the gas analyzer, the outlet of the gas outlet main pipe is communicated with a plurality of gas outlet branch pipes, the gas outlet branch pipes are communicated with the first cavities of the gas exchange parts in a one-to-one correspondence manner, and each gas outlet branch pipe is provided with a second opening and closing valve.
The reservoir ambient gas monitoring device of the embodiment of the invention further comprises a ventilation part, wherein the ventilation part comprises
The outlet of the first ventilation pipe is communicated with the air inlet pipeline and is adjacent to the gas analyzer, the inlet of the first ventilation pipe is communicated with an inert gas supply device, and a third opening and closing valve is arranged on the first ventilation pipe;
the outlet of the second ventilation pipe is communicated with the air inlet pipeline, the second ventilation pipe is positioned on one side of the first ventilation pipe away from the gas analyzer in the extending direction of the air inlet pipeline, a fourth opening and closing valve is arranged on the second ventilation pipeline, and a fifth opening and closing valve positioned between the first ventilation pipe and the second ventilation pipe in the extending direction of the air inlet pipeline is arranged on the air inlet pipeline.
In some embodiments, the first housing has a first opening and a second opening in communication with the first cavity, the first opening and the second opening open on both sides of the first housing in a first direction;
the filter membrane comprises a first filter membrane and a second filter membrane, wherein the first filter membrane is fixed on the first shell and seals the first opening, and the second filter membrane is fixed on the first shell and seals the second opening.
In some embodiments, the gas exchange section further comprises
The first filter membrane is clamped between the first grid plate and the second grid plate, the second grid plate is connected with the first shell, a first sealing piece is arranged between two adjacent ones of the first grid plate, the first filter membrane, the second grid plate and the first shell, and the first sealing piece is annular;
the second filter membrane is clamped between the third grid plate and the fourth grid plate, the fourth grid plate is connected with the first shell, and a second sealing piece is arranged between the third grid plate, the second filter membrane, the fourth grid plate and the adjacent two of the first shell and is annular.
The invention also provides a reservoir ambient gas monitoring method by using the reservoir ambient gas monitoring device, which comprises the following steps:
placing a gas exchange part in a preset position in water so that gas dissolved in the water can enter a first cavity of the gas exchange part;
and analyzing the gas in the first cavity by using a gas analyzer of a gas monitoring part.
In some embodiments, the reservoir ambient gas monitoring device is a reservoir ambient gas monitoring device as described above;
and introducing inert gas into the gas analyzer and the first cavity to clean the gas analyzer and the first cavity, so that the gas dissolved in the water can enter the cleaned first cavity.
The beneficial effects of the invention are as follows:
according to the reservoir environment gas monitoring device provided by the embodiment of the invention, the gas in the water is directly sampled through the gas exchange part, so that the reservoir environment gas monitoring device can monitor the reservoir environment on line, the monitoring steps are simple, the operation is convenient, interference factors can be reduced, and the monitoring result is accurate.
Drawings
Fig. 1 is a schematic view of a reservoir environmental gas monitoring apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic view of a gas exchange section according to an embodiment of the present invention.
Fig. 3 is a schematic view of a gas monitoring section according to an embodiment of the present invention.
Fig. 4 is a schematic view of a reservoir environmental gas monitoring apparatus according to an embodiment of the present invention.
Reference numerals:
reservoir ambient gas monitoring device 100;
a first housing 1, a first filter membrane 11, a second filter membrane 12, a first louver 13, a second louver 14, a third louver 15, a fourth louver 16, a first seal 17, a second seal 18, a first cavity 19;
the gas analyzer 2, the gas inlet pipeline 21, the gas inlet main pipe 211, the gas inlet branch pipe 212, the first on-off valve 213, the gas outlet pipeline 22, the gas outlet main pipe 221, the gas outlet branch pipe 222 and the second on-off valve 223;
a first floating body 31, a first rope 32, a sinking block 33;
a first ventilation pipe 41, a second ventilation pipe 42, a third on-off valve 43, a fourth on-off valve 44 and a fifth on-off valve 45;
the second floating body 5, the guiding part 51, the second rope 52 and the limiting ring 53.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Reservoir ambient gas monitoring apparatus 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings. As shown in fig. 1 to 4, the reservoir ambient gas monitoring apparatus 100 according to the embodiment of the present invention includes a fixing portion, a gas exchange portion, and a gas monitoring portion.
The gas exchange part comprises a first shell 1 and a filter membrane, the filter membrane is arranged on the first shell 1, the filter membrane and the first shell 1 define a first cavity 19, and gas in water can enter the first cavity 19 through the filter membrane. In particular, the filter membrane is gas-permeable and water-impermeable, the filter membrane may allow gas to pass through and into the first cavity 19, and the filter membrane may block water from entering the first cavity 19. Thus, after the gas exchange portion enters the water to a preset depth, the gas dissolved in the water can enter the first cavity 19 through the filter membrane. For example, the filter membrane is made of PTFE.
The fixing part can enter water, and the gas exchange part is arranged on the fixing part and can enter water along with the fixing part. Specifically, the fixing part is a device for fixing and driving the gas exchange part to enter water. The fixing part can move the gas exchange part to a preset position (to-be-monitored position) in water, so that gas at the preset position in water can enter the first cavity 19 of the gas exchange part, and the gas exchange part can collect the required gas. For example, the fixing part may be a stick body, a telescopic rod, or the like.
The gas monitoring section includes a gas analyzer 2 and a gas inlet pipe 21, an inlet of the gas analyzer 2 is communicated with the first chamber 19 through the gas inlet pipe 21, and the gas analyzer 2 is used for analyzing the composition of the gas introduced therein.
Specifically, the gas analyzer 2 is an existing gas analyzer. The gas analyzer 2 is provided with a pump body (an air pump) and a gas pressure stabilizing device, gas can be pumped into the gas analyzer 2 when the pump body of the gas analyzer 2 works, and the gas pressure stabilizing device can adjust the gas pressure in the gas analyzer 2, so that the gas pressure can meet the requirement of the gas analyzer 2 for analyzing the gas. The analyzed gas may be discharged to the atmosphere through an outlet of the gas analyzer 2. In the related art, a water pump or a water sampler is used for collecting the gas by adopting a headspace balance method, the gas is brought back to a laboratory and is introduced into the gas analyzer 2 for analysis and test, and the analyzed gas can be discharged into the atmosphere through an outlet of the gas analyzer 2. That is, the method in the related art is to collect the gas and then bring the gas back to the laboratory to be introduced into the gas analyzer 2 for analysis and test. The method is complex in operation, multiple in interference factors and large in experimental error, and cannot realize on-line monitoring.
The gas analyzer 2 of the reservoir environment gas monitoring device 100 according to the embodiment of the present invention is connected to the first cavity 19 through the gas inlet pipe 21, so that the gas in the first cavity 19 can be introduced into the gas analyzer 2 under the action of the pump body, so that the gas analyzer 2 can analyze the gas components (methane, carbon dioxide, nitrous oxide, oxygen, ammonia, etc.) in the first cavity 19, thereby monitoring the reservoir environment. The gas analyzer 2 may be floated on the water surface or disposed on the shore by a floating body so that the reservoir environmental gas monitoring apparatus 100 according to an embodiment of the present invention analyzes the collected gas at the collection site. Compared with the water pump or water sampler for collecting the gas by the headspace balance method and then carrying the collected gas back to the laboratory for analysis and test, the reservoir environmental gas monitoring device 100 according to the embodiment of the invention directly (online) samples the gas in the water through the gas exchange part, and then the gas analyzer 2 directly and directly analyzes the gas entering the first cavity 19 for a long time, so that the reservoir environmental gas monitoring device 100 can monitor the reservoir environment online, and the monitoring steps are simple, convenient to operate and can reduce interference factors, so that the monitoring result is accurate. The online monitoring of the reservoir environment in the invention means that the reservoir environment is directly monitored and the reservoir environment is monitored for a long time.
Therefore, the reservoir ambient gas monitoring apparatus 100 according to the embodiment of the present invention has advantages of convenient operation and accurate monitoring result.
As shown in fig. 2, in some embodiments, the first housing 1 has a first opening and a second opening that communicate with the first cavity 19, the first opening and the second opening being opened on both sides of the first housing 1 in the first direction. The filter membrane comprises a first filter membrane 11 and a second filter membrane 12, the first filter membrane 11 is fixed on the first housing 1 and closes the first opening, and the second filter membrane 12 is fixed on the first housing 1 and closes the second opening. That is, a plurality of filter membranes may be provided on the first housing 1 in order to increase the efficiency of the gas dissolved in the water to enter the first chamber 19. The first filter membrane 11 and the second filter membrane 12 are arranged on two sides of the first shell 1 in the first direction, so that the structural strength of the first shell 1 can be ensured, and the efficiency of entering the first cavity 19 by gas can be increased. The first direction may be a left-right direction, which is indicated by an arrow in the figure, and an up-down direction. For example, the first opening and the second opening are located on both sides of the first casing 1 in the left-right direction, the first filter membrane 11 is provided on the left side of the first casing 1, and the second filter membrane 12 is provided on the right side of the first casing 1.
As shown in fig. 2, in some embodiments, the gas exchange portion further includes a first louver 13, a second louver 14, a third louver 15, and a fourth louver 16, where each of the first louver 13, the second louver 14, the third louver 15, and the fourth louver 16 has louver holes thereon.
The first filter membrane 11 is sandwiched between a first louver 13 and a second louver 14, the second louver 14 being connected to the first housing 1. Thereby, the first louver 13 and the second louver 14 can be made to limit and support the first filter membrane 11 so as to reduce the probability of damage of the first filter membrane 11.
A first sealing member 17 is arranged between the first grid 13, the first filter membrane 11, the second grid 14 and adjacent two of the first shell 1, and the first sealing member 17 is annular. Specifically, the number of the first sealing members 17 is plural, and the plurality of first sealing members 17 are located at the edge positions between the adjacent two of the first louver 13, the first filter membrane 11, the second louver 14, and the first housing 1, so that the probability of damage of the first filter membrane 11 can be reduced.
The second filter membrane 12 is sandwiched between the third louver 15 and the fourth louver 16, and the fourth louver 16 is connected to the first casing 1. Thus, the third louver 15 and the fourth louver 16 can be allowed to limit and support the second filter membrane 12 so as to reduce the probability of damage to the second filter membrane 12.
A second sealing member 18 is arranged between the third grid 15, the second filter membrane 12, the fourth grid 16 and adjacent two of the first shell 1, and the second sealing member 18 is annular. Specifically, the second sealing members 18 are provided in plurality, and the plurality of second sealing members 18 are provided at the edge positions between the adjacent two of the third louver 15, the second filter membrane 12, the fourth louver 16 and the first casing 1, so that the probability of damage to the second filter membrane 12 can be reduced. The first seal 17 and the second seal 18 are both elastic members. For example, the first seal 17 and the second seal 18 each have a rectangular hole, the axial direction of the first seal 17 and the second seal 18 is a first direction, and the first seal 17 and the second seal 18 are made of a rubber material.
As shown in fig. 1, in some embodiments, the fixed portion includes a first floating body 31, a first rope 32, and a sinker 33.
The first floating body 31 is floatable on the water surface, and the gas analyzer 2 is provided on the first floating body 31. The sinking block 33 can sink into water, the first end of the first rope 32 is connected with the first floating body 31, the second end of the first rope 32 is connected with the sinking block 33, and the gas exchange part is arranged on the first rope 32 and can enter into water along with the first rope 32. Specifically, the first floating body 31 has a preset buoyancy, and the preset buoyancy of the first floating body 31 is greater than the gravity of the gas analyzer 2, so that the first floating body 1 can carry the gas analyzer 2. After the sinking mass 33 is submerged in the water, the first rope 32 is in a tensioned state and extends (substantially) in the up-down direction, so that the gas exchange portion fixed to the first rope 32 and entered into the water can enter a preset depth in the reservoir. The gas analyzer 2 is arranged on the top of the first floating body 31, so that the distance between the gas analyzer 2 and the gas exchange part is relatively short, and the accuracy of the monitoring result can be improved. For example, a hanging ring is arranged at the top of the first shell 1, the first shell 1 is fixed on the first rope body 32 through the hanging ring, and the first rope body 32 is a steel rope.
In some embodiments, the sum of the preset buoyancy of the first float 31 and the buoyancy of the gas exchange portion is greater than the sum of the gravity of the gas analyzer 2, the gravity of the first float 31, the gravity of the gas exchange portion, the gravity of the first rope 32, the gravity of the sinker 33, and the gravity of the connection pipe (the connection pipe includes the gas inlet pipe 21). I.e. the sum of the preset buoyancy of the first float 31 and the buoyancy of the gas exchange portion is greater than the sum of the weights of all the components so that the first float 31 and the gas analyzer 2 can float on the water surface. And the sum of the gravity of the gas exchange portion and the gravity of the sinker 33 is larger than the buoyancy of the gas exchange portion so that the first rope 32 is in a tensioned state and extends (substantially) in the up-down direction.
In some embodiments, the weight of the sinking mass 33 is large and can sink to the bottom of the reservoir, and the sum of the preset buoyancy of the first floating body 31 and the buoyancy of the gas exchange part is larger than the sum of the weight of the gas analyzer 2, the weight of the first floating body 31, the weight of the gas exchange part, the weight of the first rope 32, and the weight of the connecting pipe (the connecting pipe includes the gas inlet pipe 21). Then, by adjusting the length of the first rope 32, the first floating body 31 and the gas analyzer 2 can be made to float on the water surface and the first rope 32 can be made to be in a tensioned state and extend (substantially) in the up-down direction. For example, the length of the first rope 32 is (substantially) equal to the depth of water in the reservoir.
As shown in fig. 4, in some embodiments, the fixing part further includes a second floating body 5, a guide part 51, a second rope 52, and a plurality of stopper rings 53. The guide 51 is provided on the sinker 33. The two ends of the second rope 52 are a third end and a fourth end respectively, the third end of the second rope 52 is connected with the first floating body 31, the fourth end of the second rope 52 passes through the guiding part 51 and is connected with the second floating body 5, the second rope 52 can move relative to the guiding part 51, and the guiding part 51 can guide and limit the second rope 52. The plurality of stopper rings 53 are provided on the first rope 32 at intervals along the extending direction of the first rope 32, and the plurality of stopper rings 53 are fitted around the second rope 52. Specifically, the plurality of stopper rings 53 are positioned between the first floating body 31 and the guide part 51 on the second string 52, so that the second floating body 5 can be positioned under the first floating body 31 by controlling the length of the second string 52. Both ends (third and fourth ends) of the second rope 52 are pulled by the first and second floating bodies 31 and 5, respectively, so that the first and second floating bodies 31 and 5 can tension the second rope 52 using their buoyancy. Therefore, when the water level of the reservoir changes, the limiting ring 53 can move up and down relative to the second rope 52 in a tensioning state, and the second floating body 5 can move along with the change of the position of the first floating body 31 in the up and down direction, so that the second rope 52 is continuously in the tensioning state. The second rope 52 limits and supports the first rope 32 through the limiting ring 53, so that the first rope 32 can adapt to the severe change of the reservoir water level and the water flow impact. For example, the guide portion 51 is a pulley and a pulley seat, the pulley seat is provided on the sinker 33, the pulley is rotatably provided on the pulley seat, the pulley and the pulley seat define a guide hole, the guide hole extends in a horizontal direction, and the second rope 52 is fitted on the pulley. The sum of the preset buoyancy of the first floating body 31 and the buoyancy of the gas exchange portion is greater than the sum of the weights of all the components including the guide portion 51, the second rope 52 and the plurality of stopper rings 53.
As shown in fig. 3, in some embodiments, the gas monitoring portion further comprises a gas outlet conduit 22, and the outlet of the gas analyzer 2 communicates with the first chamber 19 through the gas outlet conduit 22. Specifically, the gas analyzer 2 is provided with a pump body (suction pump) and a gas pressure stabilizing device, and the gas pressure inside the gas analyzer 2 can be adjusted, so that the gas pressure of the first cavity 19 can be adjusted through the gas outlet pipe 22. Therefore, after the gas dissolved in the water enters the first cavity 19, the gas to be monitored can be introduced into the gas analyzer 2 through the gas inlet pipeline 21, and the gas discharged from the gas analyzer 2 can be introduced into the first cavity 19 through the gas outlet pipeline 22, so that the gas pressure in the gas analyzer 2 and the gas pressure in the first cavity 19 can be kept stable, and the gas analyzer 2 can continuously analyze the gas in the first cavity 19.
In some embodiments, the plurality of gas exchanging portions are disposed on the first string 32 at intervals along the extending direction of the first string 32. Therefore, a plurality of gas exchange parts can be arranged at intervals along the up-down direction when entering into water, so that the environment of a plurality of depth positions in the reservoir can be monitored.
As shown in fig. 3, in some embodiments, inlet conduit 21 includes an inlet main tube 211 and a plurality of inlet branches 212, and outlet conduit 22 includes an outlet main tube 221 and a plurality of outlet branches 222.
The outlet of the main intake pipe 211 communicates with the inlet of the gas analyzer 2, the inlet of the main intake pipe 211 communicates with a plurality of intake branch pipes 212, and the plurality of intake branch pipes 212 communicate with the first chambers 19 of the plurality of gas exchange portions in one-to-one correspondence. That is, the first chamber 19 of each gas exchanging part communicates with the inlet main pipe 211 through one inlet branch pipe 212 so that the first chamber 19 of each gas exchanging part can communicate with the inlet of the gas analyzer 2.
The inlet of the main gas pipe 221 is communicated with the outlet of the gas analyzer 2, the outlet of the main gas pipe 221 is communicated with a plurality of gas outlet branch pipes 222, and the plurality of gas outlet branch pipes 222 are communicated with the first cavities 19 of the plurality of gas exchange parts in a one-to-one correspondence. I.e. the first chamber 19 of each gas exchange section communicates with the main outlet pipe 221 via one outlet branch pipe 222, so that the first chamber 19 of each gas exchange section can communicate with the outlet of the gas analyzer 2.
Each of the inlet branch pipes 212 is provided with a first on-off valve 213, and each of the outlet branch pipes 222 is provided with a second on-off valve 223. So that the gas analyzer 2 can be selectively communicated with a first chamber 19. Specifically, each first on-off valve 213 may control the on-off of a corresponding (connected) inlet manifold 212, and each second on-off valve 223 may control the on-off of a corresponding (connected) outlet manifold 222. When it is necessary to monitor the gas in a single first chamber 19, the first on-off valve 213 on the inlet manifold 212 communicating with the first chamber 19 may be opened, and the second on-off valve 223 on the outlet manifold 222 communicating with the first chamber 19 may be opened, so that both the inlet and the outlet of the gas analyzer 2 communicate with the first chamber 19. For example, the first on-off valve 213 and the second on-off valve 223 are both solenoid valves.
As shown in fig. 3, the reservoir ambient gas monitoring device 100 according to the embodiment of the present invention further includes a ventilation part including a first ventilation pipe 41 and a second ventilation pipe 42.
The outlet of the first ventilation pipe 41 is communicated with the air inlet pipeline 21 and is adjacent to the gas analyzer 2, the inlet of the first ventilation pipe 41 is communicated with an inert gas supply device, and a third opening and closing valve 43 is arranged on the first ventilation pipe 41. The outlet of the second ventilation pipe 42 is communicated with the air inlet pipeline 21, the second ventilation pipe 42 is positioned on one side of the first ventilation pipe 41 away from the gas analyzer 2 in the extending direction of the air inlet pipeline 21, a fourth on-off valve 44 is arranged on the second ventilation pipe 42, and a fifth on-off valve 45 positioned between the first ventilation pipe 41 and the second ventilation pipe 42 in the extending direction of the air inlet pipeline 21 is arranged on the air inlet pipeline 21.
Specifically, the first ventilation pipe 41 and the second ventilation pipe 42 are both in communication with the intake main pipe 211, the first ventilation pipe 41 is located downstream of the second ventilation pipe 42 in the flow direction of the gas in the intake main pipe 211, and the fifth on-off valve 45 is provided on the intake main pipe 211 between the first ventilation pipe 41 and the second ventilation pipe 42. Thus, when the first chamber 19 and the gas analyzer 2 need to be cleaned before monitoring, the third on-off valve 43 on the first ventilation pipe 41 and the fourth on-off valve 44 on the second ventilation pipe 42 (the corresponding first on-off valve 213 and second on-off valve 223 are opened), and the fifth on-off valve 45 on the intake main pipe 211 is closed. Then, the inert gas supply device is opened so that inert gas is sequentially introduced into the first ventilation pipe 41, the gas inlet main pipe 211 (the part between the fifth on-off valve 45 and the gas analyzer 2), the gas analyzer 2, the gas outlet pipeline 22, the first cavity 19, the gas inlet branch pipe 212, the gas inlet main pipe 211 (the part between the fifth on-off valve 45 and the gas inlet branch pipe 212) and the second ventilation pipe 42, thereby cleaning the first cavity 19 and the gas analyzer 2 by using inert gas, reducing interference elements in monitoring and ensuring the accuracy of monitoring results. For example, the inert gas supply means is a nitrogen gas cylinder, and the inert gas is nitrogen gas.
The invention also provides a reservoir environmental gas monitoring method using the reservoir environmental gas monitoring device 100 according to the embodiment of the invention, which comprises the following steps:
the gas exchange part is placed in a predetermined position in the water so that the gas dissolved in the water can enter the first chamber 19 of the gas exchange part. The gas flowing out of the first chamber 19 is analyzed by the gas analyzer 2 of the gas monitoring section. Specifically, the gas exchange portion(s) is provided at a preset position on the first rope 32 so that the gas exchange portion(s) is at a preset position under water in the reservoir after the first floating body 31 floats on the water surface. Thereby facilitating the entry of gases dissolved in water at different depths into the first chamber 19 of the gas exchange section at different locations. The plurality of gas analyzers 2 are respectively in communication with the different first chambers 19 for monitoring the gas within the different first chambers 19 and thereby the reservoir environment at different depths.
In some embodiments, inert gas is passed into the gas analyzer 2 and the first chamber 19 to clean the gas analyzer 2 and the first chamber 19 so that dissolved gas in the water can enter the cleaned first chamber 19. Specifically, the inert gas is sequentially discharged through the gas analyzer 2 and the first chamber 19 through the first ventilation pipe 41 and the second ventilation pipe 42, so as to reduce interference from the outside during monitoring. After each monitoring of the gas in one first chamber 19, the gas analyzer 2 may be purged with an inert gas.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the invention.
Claims (10)
1. A reservoir environmental gas monitoring device, comprising:
the gas exchange part comprises a first shell and a filter membrane, the filter membrane is arranged on the first shell, the filter membrane and the first shell define a first cavity, and gas in water can enter the first cavity through the filter membrane;
the gas monitoring part comprises a gas analyzer and a gas inlet pipeline, wherein an inlet of the gas analyzer is communicated with the first cavity through the gas inlet pipeline, and the gas analyzer is used for analyzing the components of the gas introduced into the gas analyzer;
the fixing part can enter water, and the gas exchange part is arranged on the fixing part and can enter water along with the fixing part.
2. The reservoir environmental gas monitoring device according to claim 1, wherein the fixing portion includes a first floating body, a first rope body and a sinking block, the first floating body is floatable on the water surface, the gas analyzer is arranged on the first floating body, the sinking block is submersible, a first end portion of the first rope body is connected with the first floating body, a second end portion of the first rope body is connected with the sinking block, and the gas exchange portion is arranged on the first rope body and can enter the water along with the first rope body.
3. The reservoir environmental gas monitoring device of claim 2, wherein the gas monitoring portion further comprises an outlet conduit through which the outlet of the gas analyzer communicates with the first cavity.
4. A reservoir environmental gas monitoring apparatus according to claim 3, wherein the plurality of gas exchange portions are provided in plural, and the plurality of gas exchange portions are provided on the first rope at intervals along the extending direction of the first rope.
5. The reservoir environmental gas monitoring device according to claim 4, wherein,
the air inlet pipeline comprises an air inlet main pipe and a plurality of air inlet branch pipes, an outlet of the air inlet main pipe is communicated with an inlet of the gas analyzer, an inlet of the air inlet main pipe is communicated with a plurality of air inlet branch pipes, the plurality of air inlet branch pipes are communicated with the first cavities of the plurality of gas exchange parts in a one-to-one correspondence manner, and each air inlet branch pipe is provided with a first opening and closing valve;
the gas outlet pipeline comprises a gas outlet main pipe and a plurality of gas outlet branch pipes, wherein the inlet of the gas outlet main pipe is communicated with the outlet of the gas analyzer, the outlet of the gas outlet main pipe is communicated with a plurality of gas outlet branch pipes, the gas outlet branch pipes are communicated with the first cavities of the gas exchange parts in a one-to-one correspondence manner, and each gas outlet branch pipe is provided with a second opening and closing valve.
6. A reservoir environmental gas monitoring apparatus as defined in claim 3, further comprising a ventilation portion comprising
The outlet of the first ventilation pipe is communicated with the air inlet pipeline and is adjacent to the gas analyzer, the inlet of the first ventilation pipe is communicated with an inert gas supply device, and a third opening and closing valve is arranged on the first ventilation pipe;
the outlet of the second ventilation pipe is communicated with the air inlet pipeline, the second ventilation pipe is positioned on one side of the first ventilation pipe away from the gas analyzer in the extending direction of the air inlet pipeline, a fourth opening and closing valve is arranged on the second ventilation pipeline, and a fifth opening and closing valve positioned between the first ventilation pipe and the second ventilation pipe in the extending direction of the air inlet pipeline is arranged on the air inlet pipeline.
7. The reservoir environmental gas monitoring device of any one of claims 1-6, wherein the first housing has a first opening and a second opening in communication with the first cavity, the first opening and the second opening open on both sides of the first housing in a first direction;
the filter membrane comprises a first filter membrane and a second filter membrane, wherein the first filter membrane is fixed on the first shell and seals the first opening, and the second filter membrane is fixed on the first shell and seals the second opening.
8. The reservoir environmental gas monitoring apparatus of claim 7, wherein the gas exchange portion further comprises
The first filter membrane is clamped between the first grid plate and the second grid plate, the second grid plate is connected with the first shell, a first sealing piece is arranged between two adjacent ones of the first grid plate, the first filter membrane, the second grid plate and the first shell, and the first sealing piece is annular;
the second filter membrane is clamped between the third grid plate and the fourth grid plate, the fourth grid plate is connected with the first shell, and a second sealing piece is arranged between the third grid plate, the second filter membrane, the fourth grid plate and the adjacent two of the first shell and is annular.
9. A method of monitoring reservoir environmental gas using the reservoir environmental gas monitoring device according to any one of claims 1 to 8, comprising the steps of:
placing a gas exchange part in a preset position in water so that gas dissolved in the water can enter a first cavity of the gas exchange part;
and analyzing the gas in the first cavity by using a gas analyzer of a gas monitoring part.
10. The method for monitoring the ambient gas of the reservoir according to claim 9, wherein,
the reservoir environmental gas monitoring device is the reservoir environmental gas monitoring device according to claim 6;
and introducing inert gas into the gas analyzer and the first cavity to clean the gas analyzer and the first cavity, so that the gas dissolved in the water can enter the cleaned first cavity.
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