CN112304704A - Offshore area multi-site radioactivity monitoring device and method - Google Patents
Offshore area multi-site radioactivity monitoring device and method Download PDFInfo
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- CN112304704A CN112304704A CN202011232480.6A CN202011232480A CN112304704A CN 112304704 A CN112304704 A CN 112304704A CN 202011232480 A CN202011232480 A CN 202011232480A CN 112304704 A CN112304704 A CN 112304704A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
- 238000005070 sampling Methods 0.000 claims abstract description 50
- 238000005086 pumping Methods 0.000 claims abstract description 34
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 239000013535 sea water Substances 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000001228 spectrum Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 28
- 238000004458 analytical method Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 230000009191 jumping Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000012857 radioactive material Substances 0.000 description 2
- 238000003904 radioactive pollution Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000005025 nuclear technology Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 239000002354 radioactive wastewater Substances 0.000 description 1
- 239000002352 surface water 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
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
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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
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/204—Measuring radiation intensity with scintillation detectors the detector being a liquid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
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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
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
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Abstract
The invention discloses a near-shore sea area multi-site radioactivity monitoring device and a method, wherein the device comprises a central controller, a flowmeter, an anchor system buoy, sampling equipment and pumping equipment, wherein the anchor system buoy is fixed at one site of a near-shore sea area, and an inlet of a water pipeline is fixed at a proper position below the sea surface through a buoy; the pumping equipment pumps seawater through a water pipeline and conveys the seawater to the sampling equipment, the sampling equipment integrates gamma energy spectrum measuring equipment to detect seawater radioactivity, sampling data of the sampling equipment is sent to the central controller, and the flowmeter is arranged at a water outlet of the sampling equipment and sends detected flow information to the central controller. The invention effectively realizes real-time radioactivity monitoring on a plurality of sites, and the measurement precision of the radioactivity monitoring can be effectively improved by circularly and quantitatively sampling and shielding materials.
Description
Technical Field
The invention relates to the technical field of ocean monitoring, in particular to a multi-point radioactivity monitoring device and method for offshore areas.
Background
With the continuous development of nuclear energy and nuclear technology application, surface water, underground water and ocean in the environment are increasingly receiving
The threat of contamination by radioactive materials, and among them the pollution of the ocean is particularly serious, most nuclear power plants and nuclear plants are built in coastal areas, these coastal nuclear facilities usually dilute the radioactive materials discharged by them with seawater, and nuclear-powered ships operating at sea discharge the radioactive waste directly into the ocean. When accidents happen to nuclear power plants and nuclear submarines, serious radioactive pollution of water bodies can be caused to oceans, and moreover, it is reported that radioactive wastewater of the Fudao nuclear power plant is poured into the Pacific ocean in Japan, which can cause serious radioactive pollution. After the sea is polluted, not only the inland water is polluted, but also the ecological environment is damaged. The offshore area is a sensitive area which has frequent economic activities of human beings, is greatly influenced by land-source pollutants and has strong interaction of multiple interfaces, and has great significance for radioactive monitoring of the offshore area.
Common ocean radioactivity monitoring methods are laboratory analysis methods and detector underwater direct measurement methods, wherein the laboratory analysis methods are random sampling of key water areas and sample preparation and measurement in a laboratory for a plurality of times every year, and are high in precision, poor in real-time performance and long in period; the second method consists of two parts, namely overwater data processing and underwater detection, does not need sampling and sample preparation, has high real-time performance but poor precision, monitors a plurality of sites in a water area, and has the problems of high cost, complex data transmission and analysis and the like.
Disclosure of Invention
The invention aims to provide a offshore area multi-site radioactivity monitoring method.
The technical scheme adopted by the invention is as follows:
a near shore sea area multi-site radioactivity monitoring method comprises a central controller, a flowmeter, an anchor system buoy, sampling equipment and pumping equipment, wherein the anchor system buoy is fixed at a near shore sea area site, and a water pipeline inlet is fixed at a proper position below the sea surface through a buoy; the pumping equipment pumps seawater through a water pipeline and conveys the seawater to the sampling equipment, the sampling equipment integrates gamma energy spectrum measuring equipment to detect seawater radioactivity, sampling data of the sampling equipment is sent to the central controller, and the flowmeter is arranged at a water outlet of the sampling equipment and sends detected flow information to the central controller.
Further, the main control chip of the central controller is an STM32 series single chip microcomputer. The water pipeline has high corrosion resistance; the flowmeter is a liquid flowmeter.
Further, as a possible embodiment, the anchor buoy is provided in plural and distributed at each detection point in the offshore area.
Further, as a possible implementation manner, the water pumping device includes a plurality of water pumping pumps capable of being independently controlled, the number of the water pumping pumps is not less than that of the anchor system buoys, and each water pumping pump is arranged corresponding to one anchor system buoy.
Further, as a feasible implementation manner, the water outlet of each water pump is connected to the sampling device through a valve, and the valve is controlled by the central controller to act.
Further, as a possible implementation mode, the water conveying pipeline and the inlet of the sample container are provided with a filtering device, and the filtering device filters impurities in the seawater.
Further, as a possible implementation, the water pumping device comprises a special assembly chamber, and a power supply system and a plurality of small-flow high-lift water pumping sets which are installed in the assembly chamber.
Further, as a feasible implementation mode, the sampling device adopts an aluminum alloy round tube with a water sample inlet and outlet and a detection port as a sample container, and a nuclear detection instrument is fixed below the sample container;
further, as a possible embodiment, the sampling device is installed in a safety chamber formed by a shielding material, and further, the safety chamber is a metal lead chamber formed by metal lead.
Further, as a possible implementation manner, the gamma energy spectrum measuring device comprises a nuclear detection instrument, a digital multi-channel pulse amplitude analysis and data processing system which are connected in sequence; the nuclear detection instrument comprises a gamma spectrometer and a liquid scintillation counter.
Furthermore, the invention also discloses a near-shore sea area multi-site radioactivity monitoring method, which adopts the near-shore sea area multi-site radioactivity monitoring device and comprises the following steps:
step S1: initializing a main control chip in the central control module;
step S2: opening a water pumping pump group and adjusting the flow to be proper to start sampling;
step S3: selecting a detection site, opening a valve corresponding to the water outlet of the water pump to enable a water sample to flow into a sample container of the adopted equipment from a sample inlet and closing the valve of the sample outlet, enabling the water sample to overflow from the detection port, closing the sample inlet after the data detected by the flowmeter is detected, standing for several seconds, and then starting to detect the radioactivity of the seawater by the gamma energy spectrum measurement module;
step S4: opening a sample outlet valve to drain the water sample until the flow meter has no detection data to ensure that the water sample is drained;
step S5: judging whether to continue detection, if so, jumping to step S3; if not, finishing the sampling measurement.
By adopting the technical scheme, the water pumping module and the anchor system buoy are adopted to sample a plurality of sites in the offshore area, the sampling module realizes quantitative sampling of water samples of the sites by selecting the corresponding water outlet valve of the water pumping pump, and the cooperative work of sampling and radioactivity monitoring is realized by monitoring the numerical value of the flowmeter, so that the real-time radioactivity monitoring of the sites is effectively realized, and in addition, the measurement precision of the radioactivity monitoring can be effectively improved by circulating quantitative sampling and shielding materials.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and the detailed description;
FIG. 1 is a schematic diagram of a system structure of a multi-site radioactivity monitoring device in offshore areas according to the present invention;
FIG. 2 is a schematic diagram of the structure of the apparatus used in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
As shown in fig. 1 or fig. 2, the invention discloses a offshore area multi-site radioactivity monitoring method, which comprises a central controller, a flowmeter, an anchor system buoy, sampling equipment and pumping equipment, wherein the anchor system buoy is fixed at a site in an offshore area, and an inlet of a water pipeline is fixed at a proper position under the sea surface through the buoy; the pumping equipment pumps seawater through a water pipeline and conveys the seawater to the sampling equipment, the sampling equipment integrates gamma energy spectrum measuring equipment to detect seawater radioactivity, sampling data of the sampling equipment is sent to the central controller, and the flowmeter is arranged at a water outlet of the sampling equipment and sends detected flow information to the central controller.
Further, the main control chip of the central controller is an STM32 series single chip microcomputer. The water pipeline has high corrosion resistance; the flowmeter is a liquid flowmeter.
Further, as a possible embodiment, the anchor buoy is provided in plural and distributed at each detection point in the offshore area.
Further, as a possible implementation manner, the water pumping device includes a plurality of water pumping pumps capable of being independently controlled, the number of the water pumping pumps is not less than that of the anchor system buoys, and each water pumping pump is arranged corresponding to one anchor system buoy.
Further, as a feasible implementation manner, the water outlet of each water pump is connected to the sampling device through a valve, and the valve is controlled by the central controller to act.
Further, as a possible implementation mode, the water conveying pipeline and the inlet of the sample container are provided with a filtering device, and the filtering device filters impurities in the seawater.
Further, as a possible implementation, the water pumping device comprises a special assembly chamber, and a power supply system and a plurality of small-flow high-lift water pumping sets which are installed in the assembly chamber.
Further, as a feasible implementation mode, the sampling device adopts an aluminum alloy round tube with a water sample inlet and outlet and a detection port as a sample container, and a nuclear detection instrument is fixed below the sample container;
further, as a possible embodiment, the sampling device is installed in a safety chamber formed by a shielding material, and further, the safety chamber is a metal lead chamber formed by metal lead.
Further, as a possible implementation manner, the gamma energy spectrum measuring device comprises a nuclear detection instrument, a digital multi-channel pulse amplitude analysis and data processing system which are connected in sequence; the nuclear detection instrument comprises a gamma spectrometer and a liquid scintillation counter.
Furthermore, the invention also discloses a near-shore sea area multi-site radioactivity monitoring method, which adopts the near-shore sea area multi-site radioactivity monitoring device and comprises the following steps:
step S1: initializing a main control chip in the central control module;
step S2: opening a water pumping pump group and adjusting the flow to be proper to start sampling;
step S3: selecting a detection site, opening a valve corresponding to the water outlet of the water pump to enable a water sample to flow into a sample container of the adopted equipment from a sample inlet and closing the valve of the sample outlet, enabling the water sample to overflow from the detection port, closing the sample inlet after the data detected by the flowmeter is detected, standing for several seconds, and then starting to detect the radioactivity of the seawater by the gamma energy spectrum measurement module;
step S4: opening a sample outlet valve to drain the water sample until the flow meter has no detection data to ensure that the water sample is drained;
step S5: judging whether to continue detection, if so, jumping to step S3; if not, finishing the sampling measurement.
By adopting the technical scheme, the water pumping module and the anchor system buoy are adopted to sample a plurality of sites in the offshore area, the sampling module realizes quantitative sampling of water samples of the sites by selecting the corresponding water outlet valve of the water pumping pump, and the cooperative work of sampling and radioactivity monitoring is realized by monitoring the numerical value of the flowmeter, so that the real-time radioactivity monitoring of the sites is effectively realized, and in addition, the measurement precision of the radioactivity monitoring can be effectively improved by circulating quantitative sampling and shielding materials.
It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (10)
1. The utility model provides a nearly bank sea area multiple site radioactivity monitoring devices which characterized in that: the system comprises a central controller, a flowmeter, an anchor system buoy, sampling equipment and pumping equipment, wherein the anchor system buoy is fixed at one site of an offshore area, and an inlet of a water pipeline is fixed at a proper position below the sea surface through the buoy; the pumping equipment pumps seawater through a water pipeline and conveys the seawater to the sampling equipment, the sampling equipment integrates gamma energy spectrum measuring equipment to detect seawater radioactivity, sampling data of the sampling equipment is sent to the central controller, and the flowmeter is arranged at a water outlet of the sampling equipment and sends detected flow information to the central controller.
2. The offshore area multi-site radioactivity monitoring device of claim 1, wherein: the anchor system buoys are distributed and arranged at each detection point of the offshore area.
3. The offshore area multi-site radioactivity monitoring device of claim 1, wherein: the water pumping equipment comprises a plurality of water pumping pumps which can be independently controlled, the number of the water pumping pumps is not less than that of the anchor system buoys, and each water pumping pump corresponds to one anchor system buoy.
4. The offshore area multi-site radioactivity monitoring device of claim 3, wherein: the water outlet of each water pump is connected to the sampling device through a valve, and the valve is controlled by the central controller to act.
5. The offshore area multi-site radioactivity monitoring device of claim 1, wherein: the water pipe and the sample container are provided with a filtering device at the inlet, and the filtering device filters impurities in the seawater.
6. The offshore area multi-site radioactivity monitoring device of claim 1, wherein: the water pumping equipment comprises a special assembly chamber, a power supply system and a plurality of small-flow high-lift water pumping pump groups, wherein the power supply system and the plurality of small-flow high-lift water pumping pump groups are installed in the assembly chamber.
7. The offshore area multi-site radioactivity monitoring device of claim 1, wherein: the sampling equipment adopts an aluminum alloy round tube with a water sample inlet and outlet and a detection port as a sample container, and a nuclear detection instrument is fixed below the sample container.
8. The offshore area multi-site radioactivity monitoring device of claim 1, wherein: the sampling equipment is installed in the safety chamber by shielding material shaping, and further, the safety chamber is the metal lead chamber.
9. The offshore area multi-site radioactivity monitoring device of claim 1, wherein: the gamma energy spectrum measuring equipment comprises a nuclear detection instrument and a digital multi-channel pulse amplitude analysis and data processing system which are connected in sequence; the nuclear detection instrument comprises a gamma spectrometer and a liquid scintillation counter.
10. A offshore area multi-site radioactivity monitoring method, which adopts an offshore area multi-site radioactivity monitoring device as claimed in any one of claims 1 to 9, and is characterized in that: the method comprises the following steps:
step S1: initializing a main control chip in the central control module;
step S2: opening a water pumping pump group and adjusting the flow to be proper to start sampling;
step S3: selecting a detection site, opening a valve corresponding to the water outlet of the water pump to enable a water sample to flow into a sample container of the adopted equipment from a sample inlet and closing the valve of the sample outlet, enabling the water sample to overflow from the detection port, closing the sample inlet after the data detected by the flowmeter is detected, standing for several seconds, and then starting to detect the radioactivity of the seawater by the gamma energy spectrum measurement module;
step S4: opening a sample outlet valve to drain the water sample until the flow meter has no detection data to ensure that the water sample is drained;
step S5: judging whether to continue detection, if so, jumping to step S3; if not, finishing the sampling measurement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011232480.6A CN112304704A (en) | 2020-11-06 | 2020-11-06 | Offshore area multi-site radioactivity monitoring device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504562A (en) * | 2021-06-30 | 2021-10-15 | 中国船舶工业集团公司第七0八研究所 | Activity pre-detection device for radioactive wastewater for ship |
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