CN211718159U - Radionuclide monitoring system - Google Patents
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- CN211718159U CN211718159U CN202020036004.6U CN202020036004U CN211718159U CN 211718159 U CN211718159 U CN 211718159U CN 202020036004 U CN202020036004 U CN 202020036004U CN 211718159 U CN211718159 U CN 211718159U
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Abstract
The utility model discloses a radionuclide monitoring system, this system is including monitoring subsystem, transmission subsystem, data processing subsystem and decision-making subsystem, and wherein, the nuclide concentration that monitoring subsystem will be monitored transmits the data processing subsystem through transmission subsystem, and the data processing subsystem utilizes atmosphere and ocean nuclide diffusion model to carry out the analysis to the nuclide concentration of passing into respectively to transmit the analysis result to the decision-making subsystem, give emergent scheme by the decision-making subsystem. The radionuclide monitoring system of the utility model can not only sample and monitor the atmosphere and the ocean with low nuclide concentration, but also monitor the atmosphere and the ocean with high nuclide concentration in real time; meanwhile, the migration path and concentration distribution of the nuclear elements in the atmosphere and the ocean can be predicted according to the monitoring result, and reference is provided for emergency response of nuclear leakage accidents.
Description
Technical Field
The utility model relates to an electricity safety field and environmental protection field are particularly useful for after nuclear leakage accident takes place, and monitoring and radioactive concentration in the atmosphere under the prediction marine environment in the sea water gives emergent scheme.
Background
With the continuous development of industry, environmental issues become more severe, and protecting the ecological environment has become an important issue facing human beings. The continuous development of nuclear energy and the wide application of nuclear technology, nuclear waste discharged by coastal nuclear power stations and marine nuclear power drums, and nuclear leakage caused by nuclear accidents generate huge damage to the atmosphere and marine environment, even human society, and the influence can reach hundreds of years to thousands of years, even longer. The prevention and control of atmospheric and marine nuclear pollution has been regarded as an important task facing mankind in most countries, and therefore, the improvement of environmental safety guarantee capability is of great significance.
After serious accidents happen to coastal nuclear power stations, the reactor core can be melted and even exploded, so that nuclear facilities are damaged, and serious radioactive leakage events are caused. The aerosol containing radioactivity leaks into the atmosphere, causing serious atmospheric radioactive pollution; the leakage of cooling water containing radioactive materials into the ocean, or their discharge into the ocean, can cause severe radioactive contamination of the ocean. This contamination is not only long, extensive, but also has complex and serious consequences. The radionuclide concentration in the ocean and the atmosphere is monitored, and the method is very important for guaranteeing the atmosphere and the ocean environment.
The existing marine radionuclide monitoring method has poor intelligence, single acquired data and weak referential property, and is not enough to deal with nuclear leakage accidents. The existing marine radionuclide monitoring device cannot simultaneously monitor the radioactivity levels of the atmosphere and the ocean. For radioactive atmosphere and ocean with low nuclide concentration, only seawater and atmosphere samples can be collected and brought back to a laboratory for monitoring, and the sampling monitoring method has the disadvantages of complex sample treatment, large workload and long time consumption. The vessel-based monitoring can monitor radioactive oceans and atmosphere with high nuclide concentration, cannot monitor radioactive oceans and atmosphere with low nuclide concentration, and cannot perform real-time monitoring on a ground platform. At present, a real-time monitoring system is available for marine resource utilization, but no real-time monitoring system is available for radionuclide in the sea. The existing marine radionuclide monitoring device basically depends on a foreign communication system for data transmission, and has the problems of single data transmission mode, low reliability and the like.
Due to the above problems, it is necessary to design a radionuclide monitoring system that can not only sample and monitor the atmosphere and seawater with low nuclide concentration, but also monitor the atmosphere and seawater with high nuclide concentration in real time, so as to deal with nuclear pollution control and nuclear leakage accidents.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present inventors have conducted intensive studies to design a radionuclide monitoring system, which includes a monitoring subsystem, a transmission subsystem, a data processing subsystem, a control subsystem, a decision subsystem, and a power subsystem. The monitoring subsystem comprises an atmosphere monitoring device and an ocean monitoring device, and can be used for sampling and monitoring the atmosphere and the seawater with low nuclide concentration and monitoring the atmosphere and the seawater with high nuclide concentration in real time. The data processing subsystem utilizes atmospheric nuclide diffusion model and marine nuclide diffusion model to carry out the analysis to the nuclide concentration of monitoring to transmit the analysis result to the decision-making subsystem, give emergent scheme by the decision-making subsystem, thereby accomplished the utility model discloses a monitoring system is provided.
Specifically, the utility model provides a radionuclide monitoring system, the system includes monitoring subsystem, transmission subsystem, data processing subsystem and decision-making subsystem; wherein the monitoring subsystem is configured to simultaneously monitor the nuclide concentrations in the atmosphere and in the ocean.
Wherein the monitoring subsystem comprises an atmospheric monitoring device and a marine monitoring device;
preferably, the atmospheric monitoring device comprises an atmospheric nuclide real-time monitoring device 5 and an atmospheric nuclide sampling monitoring device 10;
the atmospheric nuclide sampling monitoring device 10 comprises a fan 27 and a nuclide adsorption column 29, wherein the nuclide adsorption column 29 is installed at the outlet of the fan 27.
Wherein, the atmospheric nuclide real-time monitoring device 5 is selected from a gas detector, a semiconductor detector or a scintillator detector, preferably a scintillator detector, and more preferably a NaI (Tl) scintillator detector;
the marine monitoring device comprises a marine nuclide real-time monitoring device 8 and a marine nuclide sampling monitoring device 12.
Wherein, the marine nuclide real-time monitoring device 8 is selected from a gas detector, a semiconductor detector or a scintillator detector, preferably a scintillator detector, and more preferably a NaI (Tl) scintillator detector;
the marine nuclide sampling monitoring device 12 comprises a filter, a pump 16 and a nuclide adsorption device;
wherein the filter includes a large particle filter 15 and a fine particle filter 18;
the nuclide adsorption device comprises an iodine adsorption column 19 and a cesium adsorption column 20.
Wherein a liquid flow meter 17 is provided between the pump 16 and the fine particle filter 18; a check valve 21 is provided at the outlet of the cesium adsorption column 20.
Wherein, the marine nuclide real-time monitoring device 8 is provided in plurality.
The transmission subsystem adopts a network signal transmission mode and a communication satellite transmission mode, and the communication satellite transmission mode is preferably a Beidou satellite transmission mode.
Wherein the data processing subsystem analyzes the nuclide concentration in the incoming atmosphere using an atmospheric nuclide diffusion model;
the data processing subsystem analyzes the incoming nuclide concentrations in the ocean using a marine nuclide diffusion model.
The utility model discloses the beneficial effect who has includes:
1) the utility model provides a radionuclide detection system, its atmosphere monitoring devices can be used for monitoring the nuclide concentration in the atmosphere, and the ocean monitoring devices can be used for monitoring the nuclide concentration in the ocean, can realize monitoring the radioactive substance in atmosphere and ocean simultaneously, has enlarged monitoring range, has improved monitoring efficiency;
2) the radionuclide detection system provided by the utility model has the advantages that the atmospheric nuclide sampling and monitoring device and the marine nuclide sampling and monitoring device can automatically collect samples, a large amount of seawater and atmosphere do not need to be collected to be detected by laboratory sample preparation, and the monitoring operation is simplified;
3) the utility model provides a radionuclide detection system, its sea water radionuclide real-time monitoring device is provided with a plurality of NaI (Tl) scintillator detectors, and marine nuclide sampling monitoring device is provided with a plurality of motorised valves, can measure the radionuclide concentration in the sea water of different degree of depth;
4) the utility model provides a radionuclide detection system, the transmission subsystem thereof adopts the network signal transmission mode or the communication satellite transmission mode to carry out data transmission, which ensures the real-time performance, reliability and safety of signal transmission;
5) the utility model provides a radionuclide detection system, the data processing subsystem thereof utilizes the atmospheric nuclide diffusion model and the ocean nuclide diffusion model to analyze the monitored nuclide concentration, the analysis result is reliable, and the accuracy is high;
6) the utility model provides a radionuclide detection system, the power subsystem of which adopts a solar panel and a wave energy power generation device to supply power for a storage battery, the storage battery and a nuclear battery supply power for the system together, and multiple guarantees are provided for the system operation;
7) the utility model provides a monitoring method of radionuclide detecting system both can carry out sampling monitoring to the atmosphere that nuclide concentration is low and sea water, also can carry out real-time supervision to the atmosphere that nuclide concentration is high and sea water, has improved monitoring system's sensitivity.
Drawings
Fig. 1 shows a block diagram of a test point according to a preferred embodiment of the invention;
FIG. 2 shows a diagram of a marine nuclide sampling detection device in accordance with a preferred embodiment of the present invention;
FIG. 3 shows a block diagram of an atmospheric nuclide sampling detection device in accordance with a preferred embodiment of the present invention;
fig. 4 shows a block diagram of a radionuclide detection system according to a preferred embodiment of the present invention.
The reference numbers illustrate:
1-an antenna;
2-a solar panel;
3-buoy
4-a communication terminal;
5-atmospheric nuclide real-time monitoring device;
6-control the terminal;
7-nuclear batteries;
8-marine nuclide real-time monitoring device;
9-a scaffold;
10-atmospheric nuclide sampling monitoring device;
11-a storage battery;
12-marine nuclide sampling monitoring device;
13-a wave energy power generation device;
14-an electrically operated valve;
15-large particle filter;
16-a pump;
17-a liquid flow meter;
18-a fine particle filter;
19-iodine adsorption column;
20-cesium adsorption column;
21-a non-return valve;
22-a box body;
26-front check valve;
27-a fan;
28-a gas flow meter;
29-nuclide adsorption column;
30-rear check valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. The features and advantages of the present invention will become more apparent from the description.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
An aspect of the utility model provides a radionuclide monitoring system, the system is including monitoring subsystem, transmission subsystem, data processing subsystem and decision-making subsystem.
The monitoring subsystem is used for monitoring the nuclide concentrations in the atmosphere and the ocean and transmitting the monitored nuclide concentrations in the atmosphere and the ocean to the data processing subsystem through the transmission subsystem respectively.
The data processing subsystem analyzes the transmitted nuclide concentration in the atmosphere by using the atmospheric nuclide diffusion model, analyzes the transmitted nuclide concentration in the ocean by using the ocean nuclide diffusion model, transmits the analysis results to the decision-making subsystem through the transmission subsystem respectively, and gives an emergency plan by the decision-making subsystem.
The utility model provides a radionuclide monitoring system mainly uses in marine environment for the concentration of monitoring the radionuclide in ocean and the atmosphere confirms nuclear pollution degree, formulates processing scheme. The nuclear pollution refers to radiation pollution caused by the escape of a large amount of radioactive substances into the environment under the condition of normal operation or accidents of nuclear facilities. The harm is caused by radiation damage to the public or other organisms caused by alpha, beta and gamma rays emitted by radioactive nuclides, so that the radioactive contamination is also called as radioactive contamination. The monitoring of the concentration of the radioactive nuclide is one of important measures for controlling marine pollution and protecting marine environment and resources.
In a preferred embodiment, the monitoring subsystem includes an atmospheric monitoring device and a marine monitoring device.
The prior marine radionuclide monitoring device does not consider radioactive nuclides in the atmosphere and the ocean due to technical limitation, and cannot simultaneously monitor the radiation levels of the radioactive nuclides in the atmosphere and the ocean, namely the concentration of the radioactive nuclides. However, the utility model discloses in, atmospheric monitoring device can be used for monitoring the concentration of radionuclide in the atmosphere, and ocean monitoring device can be used for monitoring the concentration of radionuclide in the ocean, in the middle of a monitoring system, can realize monitoring the concentration of radionuclide in atmosphere and the ocean simultaneously, has enlarged monitoring range, has improved monitoring efficiency.
In a preferred embodiment, the atmospheric monitoring device comprises an atmospheric nuclide real-time monitoring device 5 and an atmospheric nuclide sampling monitoring device 10.
Because monitoring devices's monitoring concentration and sensitivity are limited, consequently, the utility model discloses in, to the nuclide concentration of difference in the atmosphere, adopt different monitoring devices. In particular, when in the atmosphere131I、137Cs、134Cs、133When the concentration of total nuclides such as Xe is higher than 10Bq/L, starting an atmospheric nuclide real-time monitoring device 5; when in the atmosphere131I、137Cs、134Cs、133When the concentration of total nuclide such as Xe is lower than 10Bq/L, the atmospheric nuclide sampling monitoring device 10 is started.
In a preferred embodiment, the real-time atmospheric nuclide monitoring device 5 is selected from a gas detector, a semiconductor detector or a scintillator detector, preferably a scintillator detector.
Among them, the scintillators in a scintillation detector are generally classified into three categories: inorganic scintillators, organic scintillators, and gas scintillators. In the present invention, the scintillator in the scintillator detector is preferably an inorganic scintillator.
Compared with an organic scintillator, the inorganic scintillator has the advantages of various types, high density and stable physicochemical properties. Inorganic scintillators generally refer to inorganic salt crystals containing a small amount of a mixture (activator). Although pure inorganic salt crystals can also be used as scintillators, the luminous efficiency can be obviously improved after the activator is added. Common inorganic scintillators include thallium-doped sodium iodide NaI (Tl), thallium-doped cesium iodide CsI (Tl), and the like.
In the present invention, the inorganic scintillator is preferably nai (tl). The NaI (Tl) crystal has high density, high energy conversion efficiency, good matching property with a photomultiplier, simple preparation and easy processing into various shapes, and is the best scintillator for detecting gamma rays at present.
In a preferred embodiment, the atmospheric nuclide sampling monitoring device 10 includes a fan 27 and a nuclide adsorption column 29, the nuclide adsorption column 29 being mounted at an outlet of the fan 27.
When the concentration of the nuclide in the air is low, the nuclide dispersed in the air needs to be adsorbed into the medium and then monitored. The utility model discloses in, nuclide adsorption column adopts the active carbon that has higher entrapment efficiency as the adsorbent, and continuous sampling 0.5-5h, preferred sampling 1-3h, for example 1h back, close the fan, finish the sampling, detect nuclide adsorption column. If the nuclide concentration can not be detected, the nuclide adsorption column is put back to the original place to continue sampling until the nuclide concentration can be detected.
The utility model discloses in, the main effect that sets up the fan is to nuclide adsorption column air delivery, improves the adsorption rate of nuclide adsorption column, can use the fan of any form for this reason, can use the ventilation blower commonly used for example.
In order to facilitate the control of the amount of adsorption of the nuclide adsorption column 29 and the calculation of the concentration of the nuclide in the atmosphere, in the present invention, it is preferable to provide a gas flow meter 28 between the fan 27 and the nuclide adsorption column 29.
In a preferred embodiment, the atmospheric nuclide sampling monitoring device 10 further includes a front check valve 26 and a back check valve 30. The front check valve 26 is positioned at the inlet of the fan 27, and the rear check valve 30 is positioned at the outlet of the nuclide adsorption column 29.
The purpose of the front check valve 26 and the rear check valve 30 is to ensure one-way air exhaust and prevent air from automatically entering the adsorption column to pollute the sample during atmospheric motion.
In a preferred embodiment, the marine monitoring module includes a marine nuclide real-time monitoring device 8 and a marine nuclide sampling monitoring device 12.
Because monitoring devices's monitoring concentration and sensitivity are limited, consequently, the utility model discloses in, to the nuclide concentration of difference in the ocean, adopt different monitoring devices. Particularly when in the ocean131I、137When the concentration of total nuclides such as Cs is more than 10Bq/L, starting the marine nuclide real-time monitoring device 8; when in the ocean131I、137And when the concentration of total nuclides such as Cs is less than 10Bq/L, starting the marine nuclide sampling monitoring device 12.
In a preferred embodiment, the marine nuclide real-time monitoring device 8 is selected from a gas detector, a semiconductor detector or a scintillator detector, preferably a scintillator detector, more preferably a nai (tl) scintillator detector, wherein the nai (tl) scintillator detectors in the marine nuclide real-time monitoring device 8 and the atmospheric nuclide real-time monitoring device 5 are of the same type, and are identical. In a preferred embodiment, the marine nuclide real-time monitoring device 8 is provided in plurality, preferably 2-6, such as 3.
By arranging the marine nuclide real-time monitoring devices 8, seawater at different ocean depths can be collected at the same time, and the nuclide concentrations at different ocean depths can be measured.
In a preferred embodiment, the marine nuclide sampling monitoring device 12 includes a filter, a pump 16, and a nuclide adsorption device.
Wherein, the filter is used for filtering the impurity in the sea water, avoids polluting nuclide adsorption equipment. The pump 16 is used for conveying radioactive seawater for the nuclide adsorption device to improve the adsorption speed of the nuclide adsorption device.
When the seawater is sampled, the sampling is generally continuously carried out for 0.5-5h, preferably for 1-3h, for example, after 1h, the pump is turned off, and the sampling is finished. And then detecting the concentration of the nuclide in the nuclide adsorption device. If the nuclide concentration cannot be detected, the nuclide adsorption device is put back to the original place to continue sampling until the nuclide concentration can be detected.
In a preferred embodiment, the filter includes a large particle filter 15 and a fine particle filter 18; the large particle filter 15 is arranged at the inlet of the pump and the fine particle filter 18 is arranged at the outlet of the pump, as shown in fig. 3.
Wherein, the large particle filter 15 is filled with sand particles with a size below 0.5mm, and the large particle filter 15 is mainly used for intercepting suspended substances in seawater to avoid pump damage caused by suction.
The fine particle filter 18 is filled with aerogel. The aerogel, also called xerogel, is a porous material which is obtained by reacting a chemical solution to form a sol, then gelling to obtain a gel, and then removing the solvent in the gel, wherein the obtained space network structure is filled with gas, and the surface of the porous material is solid and has extremely low density (close to air density). The aerogel mainly comprises silica aerogel, alumina aerogel, zirconia aerogel, carbon aerogel and the like according to different components. The utility model discloses in, the preferred carbon aerogel that chooses for use the porosity to be greater than 90%.
In a preferred embodiment, the nuclide adsorption means comprises an iodine adsorption column 19 and a cesium adsorption column 20, and the iodine adsorption column 19 and the cesium adsorption column 20 are connected in sequence after the fine particle filter 18.
Wherein the iodine adsorption column 19 uses activated carbon with micropore diameter less than 20nm for adsorption131I, cesium adsorption column 20 uses clinoptilolite for adsorption137Cs and134Cs。
in order to avoid the reverse flow of the seawater, it is preferable that a check valve 21 is provided at the outlet of the cesium adsorption column 20.
In order to facilitate the control of the amount of adsorption by the nuclide adsorption means and the calculation of the concentration of nuclides in the sea, it is preferred in the present invention that a liquid flow meter 17 is provided between the pump 16 and the fine particle filter 18.
In the utility model, in order to avoid large particle filter 15, pump 16, liquid flowmeter 17, fine particle filter 18, iodine adsorption column 19, cesium adsorption column 20 and check valve 21 to be erodeed by the flowing seawater, it is preferable to set large particle filter 15, pump 16, liquid flowmeter 17, fine particle filter 18, iodine adsorption column 19, cesium adsorption column 20 and check valve 21 within box 22, as shown in fig. 2.
In a preferred embodiment, the marine nuclide sampling monitoring device 12 further includes a plurality of electrically operated valves 14. The number of electric valves 14 is preferably 2-6, for example 3.
The motorised valve utilizes electric actuator control flap, the utility model discloses select the motorised valve for use, can carry out remote control, the simplified operation. Through setting up a plurality of motorised valves 14, can gather the sea water of the different degree of depth, improve the accuracy of testing result.
The utility model discloses in, owing to under the nuclide concentration of difference, what the nuclide monitoring in atmosphere and the ocean adopted is different monitoring devices, ocean nuclide monitoring still involves monitoring the sea water of the different degree of depth moreover, in order to conveniently in time adjust monitoring devices, preferred, radionuclide monitoring system still includes the control subsystem.
In a preferred embodiment, the control subsystem is a control terminal 6, and the control terminal 6 is connected with the monitoring subsystem through a wire. The specific control process of the control terminal 6 is as follows:
when the concentration of nuclide in the atmosphere is higher than 10Bq/L, the atmospheric nuclide real-time monitoring device 5 is started by the control terminal 6, the concentration of the nuclide in the atmosphere is detected by the NaI scintillator detector, the nuclide concentration is processed by the photomultiplier and the analyzer, data is collected by the control terminal 6, and the data is transmitted to the data processing subsystem in real time through a communication satellite or a network signal. When the atmospheric nuclide real-time monitoring device 5 cannot monitor the nuclide concentration, which indicates that the nuclide concentration is low, the atmospheric nuclide real-time monitoring device 5 is closed by the control terminal 6, and the atmospheric nuclide sampling monitoring device 10 is opened.
The control terminal 6 controls the fan 27 to be opened, and radioactive atmosphere enters the nuclide adsorption column 29 after passing through the front check valve 26 and the fan 27 and then enters the atmosphere after passing through the rear check valve 30. Continuously sampling for 0.5-5h, preferably for 1-3h, for example, after 1h, turning off the fan, ending sampling, and detecting the nuclide adsorption column. If the nuclide concentration can not be detected, the nuclide adsorption column is put back to the original place to continue sampling until the nuclide concentration can be detected. When the concentration of the nuclide in the atmosphere is higher than 10Bq/L, the atmospheric nuclide sampling monitoring device 10 is closed by the control terminal 6, and the atmospheric nuclide real-time monitoring device 5 is restarted.
When the marine nuclide concentration is higher than 10Bq/L, the marine nuclide real-time monitoring device 8 is started by the control terminal 6, the nuclide concentrations of different test points are detected by the NaI scintillator detector, the data are collected by the control terminal 6 after being processed by the photomultiplier and the analyzer, and the data are transmitted to the data processing subsystem in real time through a communication satellite or a network signal. When the marine nuclide real-time monitoring device 8 cannot monitor the nuclide concentration, the nuclide concentration is low, at the moment, the marine nuclide real-time monitoring device 8 is closed by the control terminal 6, and the marine nuclide sampling monitoring device 12 is opened.
The control terminal 6 opens the corresponding valve 14 according to the difference of the measured seawater depth, then opens the pump 16, the seawater enters from the inlet, passes through the large particle filter 15, the pump 16 and the fine particle filter 18 once, enters the iodine adsorption column 19 and the cesium adsorption column 20, and finally passes through the check valve 21 and enters the ocean. The sampling is continued for 0.5-5h, preferably 1-3h, e.g. after 1h, the pump is turned off and the sampling is ended. Then, the worker takes away and replaces the large particle filter 15, the fine particle filter 18, the iodine adsorption column 19 and the cesium adsorption column 20, and then performs nuclide concentration detection on the iodine adsorption column 19 and the cesium adsorption column 20. If the nuclide concentration cannot be detected, the nuclide adsorption device is put back to the original place to continue sampling until the nuclide concentration can be detected. When the concentration of the nuclein in the seawater is higher than 10Bq/L, the control terminal 6 closes the marine nuclide sampling monitoring device 12 and restarts the marine nuclide real-time monitoring device 8.
In a preferred embodiment, the monitoring subsystem measures the concentrations of atmospheric and marine nuclides, and the measured atmospheric and marine nuclide concentrations are transmitted to the data processing subsystem via the transmission subsystem, respectively.
The utility model discloses in, transmission subsystem includes network signal transmission mode and communication satellite transmission mode, communication satellite transmission mode is preferably big dipper satellite transmission mode.
For the data of the nuclide concentration in the ocean and the atmosphere acquired by the near-coast monitoring device, the data can be transmitted to the data processing subsystem through a network signal or a communication satellite; however, for a remote shore monitoring device, data is transmitted to the data processing subsystem only via the communications satellite.
Wherein, the inshore means that the monitoring device is 0-100km away from the coastline, and the offshore means that the monitoring device is more than 100km away from the coastline. Because of poor network signal on the far coast, the monitoring device on the far coast transmits data to the data processing subsystem only via the communication satellite.
In a preferred embodiment, the transmission subsystem transmits signals via the communication terminal 4 and the antenna 1. The communication terminal 4 comprises a Beidou communication general control terminal and a 5G network terminal.
In a preferred embodiment, the data processing subsystem takes the concentration of the nuclide in the incoming atmosphere as a source item of a nuclide diffusion model, and utilizes the atmospheric nuclide diffusion model for analysis to predict the concentration of the nuclide in the atmosphere at the next stage; the data processing subsystem takes the concentration of the nuclear species in the transmitted ocean as a source item, and utilizes an ocean nuclear species diffusion model to analyze and predict the concentration of the nuclear species in the ocean at the next stage.
Wherein, the atmospheric nuclide diffusion model is preferably a Gaussian model. The marine nuclide diffusion model is preferably an ROMS model.
In a preferred embodiment, the analysis result of the data processing subsystem is transmitted to the decision-making subsystem through the transmission subsystem, and the decision-making subsystem gives the emergency plan.
And judging the next migration direction of the nuclide according to the analysis result of the data processing subsystem, and making a personnel evacuation instruction for the region to which the nuclide is to migrate.
In a preferred embodiment, the radionuclide monitoring system further comprises a power subsystem.
Wherein the power subsystem is selected from one or more of the storage battery 11 and the nuclear battery 7, and preferably the storage battery 11 and the nuclear battery 7 are supplied with power together.
Nuclear batteries, also called radioisotope batteries, are devices that utilize the decay of a radioisotope to release energy-carrying particles (e.g., alpha particles, beta particles, and gamma rays) and convert their energy into electrical energy. The nuclear battery has the advantages of small volume, light weight, long service life and strong anti-interference performance.
The single power supply mode has the instability, and in order to ensure the stability of the power subsystem, the utility model discloses preferred adoption battery 11 and nuclear battery 7 supply power jointly.
In a preferred embodiment, the power supply equipment for the battery 11 is selected from one or more of the solar panel 2 or the wave energy power plant 13, preferably the solar panel 2 and the wave energy power plant 13 together supply power to the battery 11.
The utility model discloses in, can adopt wave energy power generation facility 13 to supply power for battery 11, wherein, wave energy power generation facility indicates can at first convert the wave energy into mechanical energy (hydraulic energy), then convert the device of electric energy into again. What wave energy power generation facility utilized is the wave, and the wave is an inexhaustible clean energy of regenerating, the utility model provides a radionuclide monitoring system mainly uses in marine environment, is more convenient for utilize wave energy power generation facility to supply power.
However, when the ocean is calm, the power supply of the storage battery 11 is not enough, the utility model discloses can also choose the solar cell panel 12 for use to supply power for the storage battery 11. The solar cell panel 12 converts solar radiation energy directly or indirectly into electrical energy through a photoelectric effect or a photochemical effect by absorbing sunlight. Compared with common batteries and recyclable rechargeable batteries, the solar storage battery belongs to a green product with more energy conservation and environmental protection. However, the photoelectric conversion efficiency of the solar cell panel is low and not stable enough.
In order to ensure that the battery 11 is sufficiently charged, the present invention preferably employs the solar panel 2 and the wave energy power generator 13 to jointly supply power to the battery 11.
In a preferred embodiment, the monitoring subsystem, the power subsystem, the antenna 1, the communication terminal 4, and the control terminal 6 are provided on a support 9, the support 9 being mounted on the buoy 3, the buoy 3 being provided to ensure that the device floats on water, as shown in fig. 1.
The structure composed of the monitoring subsystem, the power subsystem, the antenna 1, the communication terminal 4, the control terminal 6, the support 9 and the buoy 3 is a test point, when the nuclide concentration in the ocean and the atmosphere is detected, a plurality of test points can be respectively arranged on the far coast and the near coast to enlarge the test range, test data can be collected for the decision subsystem as much as possible, and the scientificity and reliability of an emergency plan given by the decision subsystem can be improved, as shown in fig. 4.
A second aspect of the present invention provides a method for monitoring a radionuclide monitoring system, the method comprising the steps of:
in the step 2, the monitoring subsystem is controlled by the control subsystem to monitor the nuclide concentration;
and 3, analyzing the transmitted nuclide concentration by the data processing subsystem, and transmitting an analysis result to the decision making subsystem.
In step 3, the data processing subsystem analyzes the concentration of the imported nuclide by respectively utilizing the atmospheric and marine nuclide diffusion models.
After step 3, preferably, step 4 is performed, and an emergency plan is given by the decision making subsystem.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", and the like indicate the directions or positional relationships based on the operating states of the present invention, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The present invention has been described above in connection with preferred embodiments, which are merely exemplary and illustrative. On this basis, can be right the utility model discloses carry out multiple replacement and improvement, these all fall into the utility model discloses a protection scope.
Claims (9)
1. A radionuclide monitoring system, the system comprising a monitoring subsystem, a transmission subsystem, a data processing subsystem and a decision making subsystem;
wherein the monitoring subsystem comprises an atmospheric monitoring device and a marine monitoring device;
the atmospheric monitoring device comprises an atmospheric nuclide real-time monitoring device (5) and an atmospheric nuclide sampling monitoring device (10);
the atmospheric nuclide sampling monitoring device (10) comprises a fan (27) and a nuclide adsorption column (29), wherein the nuclide adsorption column (29) is arranged at the outlet of the fan (27).
2. A monitoring system according to claim 1, characterized in that the atmospheric nuclide real-time monitoring device (5) is a nai (tl) scintillator detector.
3. A monitoring system according to claim 1, wherein the marine monitoring means comprises a marine nuclide real-time monitoring means (8) and a marine nuclide sampling monitoring means (12).
4. A monitoring system according to claim 3, wherein the real-time marine nuclide monitoring device (8) is a nai (tl) scintillator detector;
the marine nuclide sampling and monitoring device (12) comprises a filter, a pump (16) and a nuclide adsorption device.
5. The monitoring system of claim 4, wherein the filter comprises a large particle filter (15) and a fine particle filter (18);
the nuclide adsorption device comprises an iodine adsorption column (19) and a cesium adsorption column (20).
6. A monitoring system according to claim 5, characterized in that a liquid flow meter (17) is arranged between the pump (16) and the fine particle filter (18); a check valve (21) is arranged at the outlet of the cesium adsorption column (20).
7. The monitoring system as claimed in claim 1, wherein the marine nuclide real-time monitoring device (8) is provided in plurality.
8. The monitoring system of any one of claims 1 to 7, wherein the transmission subsystem employs network signal transmission and communications satellite transmission.
9. The monitoring system of claim 1, wherein the data processing subsystem analyzes an incoming atmospheric nuclide concentration using an atmospheric nuclide diffusion model;
the data processing subsystem analyzes the incoming nuclide concentrations in the ocean using a marine nuclide diffusion model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020036004.6U CN211718159U (en) | 2020-01-08 | 2020-01-08 | Radionuclide monitoring system |
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