CN114200503A - In-situ measurement system for radon concentration in seawater - Google Patents
In-situ measurement system for radon concentration in seawater Download PDFInfo
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- CN114200503A CN114200503A CN202111524513.9A CN202111524513A CN114200503A CN 114200503 A CN114200503 A CN 114200503A CN 202111524513 A CN202111524513 A CN 202111524513A CN 114200503 A CN114200503 A CN 114200503A
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- 229910052704 radon Inorganic materials 0.000 title claims abstract description 123
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 239000013535 sea water Substances 0.000 title claims abstract description 58
- 238000012625 in-situ measurement Methods 0.000 title claims abstract description 34
- 238000007872 degassing Methods 0.000 claims abstract description 116
- 239000000523 sample Substances 0.000 claims abstract description 74
- 238000005259 measurement Methods 0.000 claims abstract description 48
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 239000012528 membrane Substances 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 239000002274 desiccant Substances 0.000 claims description 3
- BWJGGLDSZPWFHM-UHFFFAOYSA-N radon hydrate Chemical compound O.[Rn] BWJGGLDSZPWFHM-UHFFFAOYSA-N 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000000700 radioactive tracer Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000007227 biological adhesion Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/167—Measuring radioactive content of objects, e.g. contamination
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Abstract
The invention relates to a seawater radon concentration in-situ measurement system, which belongs to the technical field of seawater measurement and comprises a degassing device and a measurement device; the degassing device comprises a degassing cabin for degassing seawater, and an air outlet pipe and an air return pipe which are connected with the degassing cabin; the measuring device comprises a sealed cabin body, and a gas monitoring cabin and a radon probe sealed cabin which are arranged in the sealed cabin body; wherein, the sealed cabin body is provided with an air inlet and an air outlet, the air inlet is communicated with an air outlet pipe of the degassing device, the air outlet is communicated with an air return pipe of the degassing device, and the air inlet and the air outlet are respectively provided with a control valve; an air pump is arranged in the air monitoring cabin, and the air inlet end of the air pump is connected to an air inlet through an air path; the radon probe is arranged in the radon probe sealed cabin, the air inlet end of the radon probe is connected to the air outlet end of the air pump through an air circuit, and the air outlet end of the radon probe is connected to the air outlet through an air circuit. The seawater radon concentration in-situ measurement system can realize underwater in-situ measurement of the seawater radon isotope.
Description
Technical Field
The invention belongs to the technical field of seawater measurement, and particularly relates to a seawater radon concentration in-situ measurement system.
Background
The ocean radon isotope tracer technology is an ideal means for researching the ocean process from the chemical perspective, and the natural radon isotope is a classical tracer for researching the ocean dynamics process. Because the concentration of radon gas in the ocean water body is extremely low (0.05-3 dpm/L), large-volume water collection is needed, and the laggard seawater large-volume sampling and analysis and measurement technology always restricts the progress of related research. At present, the measurement of radon isotopes in seawater is mainly limited in a laboratory, the sailing measurement technology is only in a starting stage, and underwater in-situ measurement cannot be realized. Therefore, how to provide an in-situ measurement system for the radon concentration in seawater to realize underwater in-situ measurement of the radon isotope in seawater is a technical problem to be solved by the current technology.
Disclosure of Invention
Aiming at the technical problem, the invention provides an in-situ measurement system for the concentration of the seawater radon, which can realize the underwater in-situ measurement of the seawater radon isotope.
The invention provides a seawater radon concentration in-situ measurement system, which comprises:
the degassing device comprises a degassing cabin for degassing seawater, and an air outlet pipe and an air return pipe which are connected with the degassing cabin;
the measuring device comprises a sealed cabin body, a gas monitoring cabin and a radon probe sealed cabin which are arranged in the sealed cabin body, wherein,
the sealed cabin body is provided with an air inlet and an air outlet, the air inlet is communicated with an air outlet pipe of the degassing device, the air outlet is communicated with an air return pipe of the degassing device, and the air inlet and the air outlet are respectively provided with a control valve;
an air pump is arranged in the air monitoring cabin, and the air inlet end of the air pump is connected to an air inlet through an air path;
the radon probe is arranged in the radon probe sealed cabin, the air inlet end of the radon probe is connected to the air outlet end of the air pump through an air circuit, and the air outlet end of the radon probe is connected to the air outlet through an air circuit.
In some embodiments, the degassing chamber comprises a hexahedral chamber frame, the top surface of the chamber frame is closed, and the other surfaces are degassing end surfaces; each degassing end face is sequentially provided with an end cover, a sintered metal filter disc, a degassing membrane and an end cover pressure ring from inside to outside, the end cover is provided with a vent hole for gas to pass through, the end cover pressure ring and the end cover are fixedly connected to the degassing end face of the cabin body frame through a fastening piece, and the sintered metal filter disc and the degassing membrane are clamped between the end cover pressure ring and the end cover; the air outlet pipe and the air return pipe are both connected to the top surface of the cabin body frame.
In some of these embodiments, the chamber frame is filled with a desiccant.
In some embodiments, the degassing cabin is provided in plurality, the gas outlet pipes of the degassing cabins are connected in series in sequence, and the gas return pipes of the degassing cabins are connected in series in sequence.
In some embodiments, the degassing device further comprises a combination frame for combining a plurality of degassing cabins, the degassing cabins are arranged in the combination frame, and a space is reserved between every two adjacent degassing cabins for seawater to pass through.
In some embodiments, the air inlet end of the air pump is provided with a normally closed electromagnetic valve.
In some embodiments, the gas monitoring cabin is further provided with a sensor for monitoring the temperature, humidity and pressure of the gas, and the sensor is mounted at the gas outlet end of the gas pump.
In some embodiments, the radon probe sealing cabin is provided with a plurality of radon probe sealing cabins, each radon probe sealing cabin is internally sealed with one radon probe, and the radon probes are connected in parallel.
In some of these embodiments, a plurality of radon probe pods are connected together by a fixed bracket.
In some embodiments, a system control cabin is further arranged in the sealed cabin body, a control unit for controlling the measuring process, a storage unit for storing measuring data and a power supply unit for supplying power are arranged in the system control cabin, the control unit is connected with the radon probe, the storage unit is connected with the control unit, and the power supply unit is respectively and electrically connected with the control unit, the storage unit, the radon probe and the air pump.
Compared with the prior art, the invention has the advantages and positive effects that:
1. according to the seawater radon concentration in-situ measurement system provided by the invention, the high-efficiency degassing of seawater is realized through the arranged degassing device, and the measurement of radon concentration in the degassed gas is realized through the arranged measurement device, so that the underwater in-situ measurement of seawater radon isotopes is realized;
2. in the seawater radon concentration in-situ measurement system provided by the invention, the measurement device realizes the gas circulation of the whole measurement system by arranging the gas pump, realizes the active measurement of radon concentration and has high measurement efficiency;
3. in the seawater radon concentration in-situ measurement system provided by the invention, the plurality of radon probes are connected in parallel for use in the measurement device, the measurement efficiency is high, the rapid and accurate measurement of the seawater radon concentration is met, the reliability is good, and the long-term continuous measurement requirement can be met.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an in-situ measurement system for radon concentration in seawater according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a degassing device in the seawater radon concentration in-situ measurement system provided by the embodiment of the present invention;
FIG. 3 is a schematic structural view of a degassing chamber in the degassing apparatus according to the embodiment of the present invention;
FIG. 4 is an exploded view of a degassing chamber in a degassing apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a measuring device in the seawater radon concentration in-situ measuring system provided by the embodiment of the present invention;
FIG. 6 is a schematic structural diagram of the interior of a sealed cabin in the measuring apparatus according to the embodiment of the present invention;
FIG. 7 is a schematic view of a connection structure of a gas monitoring chamber, a radon probe sealing chamber and a system control chamber in the measuring device provided by the embodiment of the present invention;
FIG. 8 is a schematic view of a connection structure of a plurality of radon probe sealed chambers in the measuring device provided by the embodiment of the present invention;
in the figure:
1. a degasser; 2. a measuring device;
11. a degassing cabin; 12. an air outlet pipe; 13. an air return pipe; 14. a combination frame;
111. a cabin frame; 112. an end cap; 1121. air holes are formed; 113. end cover compression rings; 114. sintering the metal filter disc; 115. degassing a membrane;
141. clamping the beam; 142. a connecting member;
21. sealing the cabin body; 22. an air inlet; 23. an air outlet; 24. a control valve; 25. a watertight connector; 26. a gas monitoring chamber; 27. sealing the chamber with radon probe; 28. a system control cabin; 29. fixing a bracket;
261. an air pump; 262. a normally closed type electromagnetic valve; 263. a sensor;
281. a control unit; 282. a storage unit; 283. a power supply unit.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in FIG. 1, an embodiment of the present invention provides an in-situ measurement system for radon concentration in seawater, comprising a degassing device 1 and a measurement device 2.
Wherein, degasser 1 is used for degassing sea water to facilitate the subsequent radon concentration in the gas of detecting. As shown in fig. 2 to 4, the degassing apparatus 1 includes a degassing tank 11 for degassing seawater, and an outlet pipe 12 and a return pipe 13 connected to the degassing tank 11. The gas in the seawater enters the degassing cabin 11 and is conveyed to the measuring device 2 through the gas outlet pipe 12, and the detected gas returns to the degassing cabin 11 through the gas return pipe 13 and is discharged from the degassing cabin 11.
In this embodiment, as shown in fig. 3 and 4, the degassing chamber 11 includes a hexahedral chamber frame 111 (preferably, a square), the top surface of the chamber frame 111 is closed, and the other surfaces are degassing end surfaces; each degassing end face is sequentially provided with an end cover 112, a sintered metal filter disc 114, a degassing membrane 115 and an end cover pressing ring 113 from inside to outside, the end cover 112 is provided with air holes 1121 for gas to pass through, the end cover pressing ring 113 and the end cover 112 are fixedly connected to the degassing end face of the cabin body frame 111 through fasteners, and the sintered metal filter disc 114 and the degassing membrane 115 are clamped between the end cover pressing ring 113 and the end cover 112; the air outlet pipe 12 and the air return pipe 13 are both connected to the top surface of the cabin frame 111. The end cover 112 has a pressure-bearing function, and the air holes 1121 formed therein allow air to pass therethrough; the sintered metal filter sheet 114 supports the degassing membrane 115 while ensuring the passage of gas; the degassing membrane 115 plays a role in gas-liquid separation; the end cap pressing ring 113 is used to seal and fix the degassing membrane 115. In this embodiment, the degassing compartment 11 having a hexahedral design is adopted, which greatly increases the area of the degassing membrane 115; meanwhile, when the device is used, the degassing end face at one side faces against ocean current, and the degassing end face at the other side faces away from the ocean current, so that the degassing efficiency of the degassing membrane 115 at the side facing against the ocean current is improved in multiples, the degassing membrane 115 at the side facing away from the ocean current can better discharge gas, the efficiency of degassing seawater into the degassing cabin 11 and exhausting gas out of the degassing cabin 11 is effectively improved, a deep water pump is not needed to increase the flow speed, and the cost and the power consumption are reduced; moreover, the degassing cabin 11 faces the ocean current surface, so that the biological adhesion can be reduced, and the requirement of long-term continuous measurement can be better met. Meanwhile, in the degassing tank 11 adopted in the embodiment, the degassing membranes 115 of 5 degassing end faces are independent from each other, degassing membranes 115 of different brands and models can be installed during one-time measurement, the thickness and the pore diameter of different degassing membranes 115 are different, the degassing efficiency is different under different water depths, and the degassing efficiency can be ensured under different water depths by installing degassing membranes 115 with different properties, so that the requirement of in-situ measurement of a seawater profile is met.
In order to accelerate the gas enrichment, it is preferable that the chamber frame 111 is filled with a desiccant to meet different measurement requirements, and at the same time, the volume inside the chamber can be reduced to accelerate the gas enrichment.
In order to further increase the gas enrichment speed, as shown in fig. 2, in this embodiment, the degassing compartment 11 is provided in plurality, the gas outlet pipes 12 of the degassing compartments 11 are sequentially connected in series, and the gas return pipes 13 of the degassing compartments 11 are sequentially connected in series. It should be noted that the number of the degassing compartments 11 can be adjusted according to different measurement requirements, thereby widening the use scenarios.
In order to facilitate the combination of the degassing compartments 11, as shown in fig. 2, in this embodiment, the degassing device 1 further includes a combination frame 14 for combining the degassing compartments 11 together, the degassing compartments 11 are arranged in the combination frame 14, and a space is left between two adjacent degassing compartments 11 for passing seawater. Through the combined frame 14, the degassing cabin 11 can be combined together, so that the degassing cabin 11 can be conveniently placed, used and recovered. Specifically, the combo frame 14 includes two opposite clamping beams 141, the two clamping beams 141 are respectively located above and below the degassing compartment 11, and the two clamping beams 141 are detachably fastened and connected by a connecting member 142 to clamp the degassing compartments 11 between the two supporting beams. When the degassing compartment 11 is combined, the degassing compartment 11 is placed between the two clamping beams 141 and arranged, and the two clamping beams 141 are fastened and connected by the connecting piece 142, so that the degassing compartment 11 is simple and convenient to combine and operate. In this embodiment, the connecting member 142 is specifically a long bolt. In order to improve the structural stability, it is preferable that the combining frames 14 are arranged in pairs, and two combining frames 14 arranged in pairs are respectively clamped on the two end covers 112 at two opposite sides of the degassing chamber 11. To facilitate the series connection of degassing compartments 11, it is preferred that degassing compartments 11 are arranged in a row.
In the above-mentioned sea water radon concentration in situ measurement system, the measuring device 2 is used for measuring the radon concentration in the gas. As shown in fig. 5-8, the measuring device 2 comprises a sealed cabin 21, and a gas monitoring cabin 26 and a radon probe sealed cabin 27 which are arranged in the sealed cabin 21, wherein the sealed cabin 21 has a gas inlet 22 and a gas outlet 23, the gas inlet 22 is communicated with the gas outlet pipe 12 of the degassing device 1, the gas outlet 23 is communicated with the gas return pipe 13 of the degassing device 1, and the gas inlet 22 and the gas outlet 23 are respectively provided with a control valve 24; an air pump 261 is arranged in the air monitoring chamber 26, and the air inlet end of the air pump 261 is connected with the air inlet 22 through an air path; the radon probe is arranged in the radon probe sealed cabin 27, the air inlet end of the radon probe is connected to the air outlet end of the air pump 261 through an air path, and the air outlet end of the radon probe is connected to the air outlet 23 through an air path. The gas that degasser 1 outlet pipe 12 was carried to the radon probe department that sets up in radon probe sealed cabin 27 through the air pump 261 that sets up in gas monitoring cabin 26 through air inlet 22 and detects, realizes the active measurement of radon concentration, and the gas after the detection flows out measuring device 2 through gas outlet 23 and gets back to degasser 1 in and discharge back to the sea water.
In the above-mentioned measuring device 2, as shown in fig. 5, the sealed chamber 21 is of a cylindrical design, and is used for realizing internal fixation and integral sealing of each sub-chamber and other structures. The air inlet 22 and the air outlet 23 are respectively arranged at two axial ends of the sealed cabin body 21, the air inlet 22 and the air outlet 23 are both hoses and are provided with control valves 24, and therefore air flow control and water leakage protection are achieved. The material of the sealed cabin body 21 and each cabin therein can be polyformaldehyde, 316L or titanium alloy and other materials according to different water depths.
In the above-mentioned measuring device 2, as shown in fig. 6 and 7, the air pump 261 is packaged in the air monitoring chamber 26, so that the air circulation of the whole measuring system is realized, and the active measuring requirement is met, and meanwhile, the air pump 261 is far away from the radon probe sealing chamber 27 through the packaging of the air monitoring chamber 26, so that the interference of the vibration of the air pump 261 to the radon probe and other hardware circuits is avoided. Preferably, as shown in fig. 7, a normally closed electromagnetic valve 262 is disposed at an air inlet end of the air pump 261, and during normal operation, the normally closed electromagnetic valve 262 is turned on, and the normally closed electromagnetic valve 262 is automatically turned off when power is off or short-circuited when water is encountered, so as to prevent seawater from entering the air pump 261. In order to monitor the gas state, it is preferable that, as shown in fig. 7, a sensor 263 for monitoring the temperature, humidity and pressure of the gas is further provided in the gas monitoring chamber 26, and the sensor 263 is installed at the gas outlet end of the gas pump 261. The sensor 263 is a temperature/humidity/pressure integrated sensor, and may be provided with a temperature sensor, a humidity sensor, and a pressure sensor.
In the above-mentioned measuring device 2, the radon probe sealing chamber 27 is used for enclosing the radon probe, in this embodiment, the radon probe is preferably a pulse ionization type radon probe, and the sensitivity and the detection efficiency thereof are hardly affected by the humidity in the outgassed gas. In the embodiment, as shown in fig. 8, there are a plurality of radon probe sealed compartments 27, and a radon probe is sealed in each radon probe sealed compartment 27 and connected in parallel. In this embodiment, radon probe sealed cabin 27 adopts the design of modularization mode, and the quick enrichment of radon gas of being convenient for improves measurement sensitivity, avoids each radon probe interference each other simultaneously, but quick replacement when the radon probe breaks down. It should be noted that, as shown in fig. 6 and 8, in this embodiment, the gas path at the gas outlet end of the gas pump 261 is divided into multiple paths through multiple communication joints to connect the gas inlet end of each radon probe respectively, so as to ensure that the gas uniformly enters each radon probe connected in parallel; the air outlet ends of the radon probes connected in parallel are connected together through a multi-way joint to be connected with an air outlet 23 of the sealed cabin 21. It should be further noted that the number of radon probes can be increased or decreased according to different measurement requirements, and in this embodiment, the number of radon probes is specifically 5. To secure the radon probe capsule 27, as shown in fig. 8, a plurality of radon probe capsules 27 are connected together by a securing bracket 29.
Further, in order to facilitate the control of the measurement process and the storage of the measurement data, as shown in fig. 6 and 7, a system control chamber 28 is further disposed in the sealed chamber body 21, a control unit 281 for controlling the measurement process, a storage unit 282 for storing the measurement data, and a power supply unit 283 for supplying power are disposed in the system control chamber 28, the control unit 281 is respectively connected to the radon probe and the sensor 263, the storage unit 282 is connected to the control unit 281, the power supply unit 283 is respectively electrically connected to the control unit 281, the storage unit 282, the radon probe, the air pump 261, and the sensor 263, and the control unit 281, the storage unit 282, and the power supply unit 283 are all connected to the watertight connector 25 disposed on the sealed chamber body 21 to be connected to an external power supply and communicate with the outside. The system control cabin 28 is responsible for packaging the electric control system, and adopts a sealing design to avoid water leakage and short circuit. It is understood that the control unit 281 may be an STM32 microcontroller, the storage unit 282 may be an SD card, and the power supply unit 283 may be an LM2596 multi-way switch power supply. In addition, it should be noted that a battery may also be added to the system control board 28 to remove external power and communication, and implement a fully self-contained mode.
The application method of the in-situ measuring system for the radon concentration in seawater comprises the following steps:
(1) the degassing device 1 and the measuring device 2 are assembled and then are put into a designated measuring sea area, the system control cabin 28 is electrified through a watertight cable, and the control unit 281 is used for conducting electrification initialization on the radon probe, the sensor 263, the storage unit 282 and the like;
(2) the control unit 281 carries out self-checking on the radon probe, the sensor 263 and the like, and judges whether the operation is normal or not; if the normal state is achieved, the normally closed electromagnetic valve 262 is electrified to realize the conduction of the normally closed electromagnetic valve 262, and the air pump 261 is started to realize the circulation of air; if the abnormal condition exists, the power is electrified again for initialization, and the abnormal information is uploaded to external monitoring software through the watertight cable.
(3) After the self-test is completed, the control unit 281 sets the sampling frequency of the radon probe and the sensor 263 to start data acquisition and storage.
(4) In the measurement process, the control unit 281 monitors the radon probes in real time, if one radon probe has no data to be reported or the data is obviously different from the measurement data of other radon probes, the control unit 281 can independently perform power-on initialization on the radon probe again, and if the radon probe still cannot be recovered to be normal, the control unit marks a fault radon probe and only records the measurement data of the other radon probes.
(5) After the measurement is finished, the control unit 281 is used for sequentially carrying out power-off protection on the air pump 261, the normally closed electromagnetic valve 262, the radon probe, the sensor 263 and other equipment, then taking back the whole measurement system, disconnecting the watertight cable, installing the watertight plug for waterproof protection, finally washing with clean water, and then wiping clean and storing.
Through the description of the embodiments of the seawater radon concentration in-situ measurement system, it can be seen that the seawater radon concentration in-situ measurement system of the present invention has at least one or more of the following advantages:
1. according to the seawater radon concentration in-situ measurement system provided by the invention, the high-efficiency degassing of seawater is realized through the arranged degassing device 1, and the measurement of radon concentration in the degassing gas is realized through the arranged measurement device 2, so that the underwater in-situ measurement of seawater radon isotopes is realized;
2. in the seawater radon concentration in-situ measurement system provided by the invention, the measurement device 2 realizes the gas circulation of the whole measurement system by arranging the air pump 261, so that the active measurement of radon concentration is realized, and the measurement efficiency is high;
3. in the seawater radon concentration in-situ measurement system provided by the invention, the plurality of radon probes are connected in parallel in the measurement device 2, the measurement efficiency is high, the rapid and accurate measurement of the seawater radon concentration is met, the reliability is good, and the long-term continuous measurement requirement can be met.
Finally, it should be noted that: the embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. Sea water radon concentration normal position measurement system, its characterized in that includes:
the degassing device comprises a degassing cabin for degassing seawater, and an air outlet pipe and an air return pipe which are connected with the degassing cabin;
the measuring device comprises a sealed cabin body, a gas monitoring cabin and a radon probe sealed cabin which are arranged in the sealed cabin body, wherein,
the sealed cabin body is provided with an air inlet and an air outlet, the air inlet is communicated with the air outlet pipe of the degassing device, the air outlet is communicated with the air return pipe of the degassing device, and the air inlet and the air outlet are respectively provided with a control valve;
an air pump is arranged in the air monitoring cabin, and an air inlet end of the air pump is connected to the air inlet through an air path;
the radon probe is arranged in the radon probe sealed cabin, the air inlet end of the radon probe is connected to the air outlet end of the air pump through an air path, and the air outlet end of the radon probe is connected to the air outlet through an air path.
2. The seawater radon concentration in-situ measurement system as claimed in claim 1, wherein the degassing chamber comprises a chamber frame in a hexahedron shape, the top surface of the chamber frame is closed, and the other surfaces are degassing end surfaces; each degassing end face is sequentially provided with an end cover, a sintered metal filter disc, a degassing membrane and an end cover pressing ring from inside to outside, the end cover is provided with a gas vent for gas to pass through, the end cover pressing ring and the end cover are fixedly connected to the degassing end face of the cabin body frame through a fastening piece, and the sintered metal filter disc and the degassing membrane are clamped between the end cover pressing ring and the end cover; the air outlet pipe and the air return pipe are both connected to the top surface of the cabin body frame.
3. The seawater radon concentration in situ measurement system as claimed in claim 2, wherein the chamber frame is filled with a desiccant.
4. The in-situ measurement system for radon concentration in sea water as claimed in claim 2 or 3, wherein said degassing compartment is plural, the air outlet pipes of said degassing compartment are connected in series in sequence, and the air return pipes of said degassing compartment are connected in series in sequence.
5. The system for in situ measurement of radon concentration in sea water as claimed in claim 4, wherein said degassing device further comprises a combination frame for combining a plurality of said degassing chambers, a plurality of said degassing chambers are arranged in said combination frame, and a space is left between two adjacent degassing chambers for passing sea water.
6. The seawater radon concentration in-situ measurement system as claimed in claim 1, wherein the air inlet end of the air pump is provided with a normally closed solenoid valve.
7. The in-situ seawater radon concentration measurement system as claimed in claim 1, wherein a sensor for monitoring the temperature, humidity and pressure of the gas is further arranged in the gas monitoring chamber, and the sensor is installed at the gas outlet end of the gas pump.
8. The seawater radon concentration in-situ measurement system as claimed in claim 1, wherein there are a plurality of radon probe sealed compartments, each radon probe sealed compartment is sealed with one radon probe, and the radon probes are connected in parallel.
9. The seawater radon concentration in situ measurement system as claimed in claim 7, wherein a plurality of radon probe sealed compartments are connected together by a fixed bracket.
10. The in-situ seawater radon concentration measurement system as claimed in claim 1, wherein a system control chamber is further arranged in the sealed chamber, a control unit for controlling the measurement process, a storage unit for storing measurement data and a power supply unit for supplying power are arranged in the system control chamber, the control unit is connected with the radon probe, the storage unit is connected with the control unit, and the power supply unit is respectively and electrically connected with the control unit, the storage unit, the radon probe and the air pump.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115453604A (en) * | 2022-11-14 | 2022-12-09 | 中国海洋大学 | In-situ measurement device and measurement method for radon concentration in whole sea depth |
| CN116559384A (en) * | 2023-07-10 | 2023-08-08 | 华能澜沧江水电股份有限公司 | Reservoir ambient gas monitoring device and reservoir ambient gas monitoring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234995A (en) * | 2013-05-03 | 2013-08-07 | 贝谷科技股份有限公司 | Method and device used for monitoring radon gas in underground water |
| US20150102228A1 (en) * | 2013-01-25 | 2015-04-16 | Hengyang Normal University | Method and device for measuring radon by electrostatic collection method without influence of environmental temperature and environmental humidity |
| US20180304174A1 (en) * | 2015-11-10 | 2018-10-25 | Hydac Technology Gmbh | Degasifying apparatus |
| CN209606346U (en) * | 2018-12-20 | 2019-11-08 | 河海大学 | It is a kind of for measuring the portable remote ship of water body radioactive radon isotope |
| CN216303465U (en) * | 2021-12-14 | 2022-04-15 | 中国海洋大学 | Seawater degassing device |
-
2021
- 2021-12-14 CN CN202111524513.9A patent/CN114200503A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150102228A1 (en) * | 2013-01-25 | 2015-04-16 | Hengyang Normal University | Method and device for measuring radon by electrostatic collection method without influence of environmental temperature and environmental humidity |
| CN103234995A (en) * | 2013-05-03 | 2013-08-07 | 贝谷科技股份有限公司 | Method and device used for monitoring radon gas in underground water |
| US20180304174A1 (en) * | 2015-11-10 | 2018-10-25 | Hydac Technology Gmbh | Degasifying apparatus |
| CN209606346U (en) * | 2018-12-20 | 2019-11-08 | 河海大学 | It is a kind of for measuring the portable remote ship of water body radioactive radon isotope |
| CN216303465U (en) * | 2021-12-14 | 2022-04-15 | 中国海洋大学 | Seawater degassing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115453604A (en) * | 2022-11-14 | 2022-12-09 | 中国海洋大学 | In-situ measurement device and measurement method for radon concentration in whole sea depth |
| CN115453604B (en) * | 2022-11-14 | 2023-03-24 | 中国海洋大学 | Full-sea deep radon concentration in-situ measurement device and measurement method |
| CN116559384A (en) * | 2023-07-10 | 2023-08-08 | 华能澜沧江水电股份有限公司 | Reservoir ambient gas monitoring device and reservoir ambient gas monitoring method |
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