CN108932380B - Radiation protection expert system of nuclear power plant - Google Patents
Radiation protection expert system of nuclear power plant Download PDFInfo
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Abstract
The invention provides a nuclear power plant radiation protection expert system, which comprises: the nuclear power plant radiation monitoring and early warning module is used for displaying radiation monitoring data generated by the radiation monitoring system data module and radiation monitoring data generated by the gamma camera radiation monitoring data module in the nuclear power plant three-dimensional simulation model, providing a visual three-dimensional radiation monitoring interface, sending an alarm signal when the radiation dosage level of a monitoring position exceeds an early warning value, and positioning the three-dimensional radiation monitoring interface to an alarm area. The invention can realize the radiation protection of the nuclear power plant with full digitalization and three-dimensional visualization of the radiation monitoring and radiation protection design of the nuclear power plant.
Description
Technical Field
The invention relates to the field of radiation protection of nuclear power plants, in particular to a radiation protection expert system of a nuclear power plant.
Background
In a nuclear energy system, nuclear fission reaction can generate various radioactive substances, and the radioactive substances are gradually accumulated in a pipeline along with the increase of the running time of a nuclear power unit to form a radioactive hot spot, so that the occupational exposure dose of workers in maintenance, inspection and the process is increased. In the whole life cycle of the nuclear power plant, the radiation protection of workers is required, and the collective dose brought by occupational irradiation is controlled. The collective dosage control not only reflects the operation, maintenance and safety management level of the Nuclear power station, but also is one of the comprehensive indexes of the WANO (world Association of Nuclear operators) performance indexes of the Nuclear power station, and is important embodiment of radiation protection optimization work. Reducing collective doses has long been an important task in radiation protection in nuclear power plants.
A radiation protection aspect is radiation monitoring, at present, an online radiation monitoring system and radiation protection personnel are generally adopted in domestic nuclear power plants to carry out hot spot combing and monitoring in a routing inspection mode by using handheld radiation monitoring equipment, wherein the radiation monitoring system is divided into a plurality of measuring channels, measuring results of the measuring channels are processed by a radiation monitoring system server and then are uniformly displayed on a nuclear power plant Digital Control System (DCS), and the radiation monitoring system has the defects that only a data list can be displayed, and is not visual enough, and only can detect the dose level of a fixed position; in the manual inspection, although the degree of freedom is high, the measured data cannot be directly input into the DCS, and the management is inconvenient.
The other side of radiation protection is radiation protection, and a flexible shielding material is prepared in the technical field of radiation protection of nuclear power plants by adopting a multi-layer composite structure design, and can be used for cladding type shielding of radioactive parts of nuclear power plants.
With the rapid development of intellectualization and informatization, more and more nuclear power plants carry out three-dimensional reverse modeling on all plants, a three-dimensional model database is formed, and meanwhile, a radioactive heat point database of the nuclear power plant can be formed by using the advanced gamma camera in cooperation with the existing radiation monitoring system of the power plant, but no complete system exists at present, the data and functions can be integrated, and an integrated radiation protection solution of the nuclear power plant is realized. Therefore, the research of the nuclear power plant radiation protection expert system capable of realizing the full digitalization and the three-dimensional visualization of the radiation monitoring and radiation protection design of the nuclear power plant has important significance.
Disclosure of Invention
The invention aims to provide a radiation protection expert system for a nuclear power plant to realize the functions of three-dimensional visual radiation monitoring, quick design and manufacture of a shielding device, virtual reality simulation training and the like.
In order to solve the technical problem, the invention provides a radiation protection expert system for a nuclear power plant, which comprises:
the nuclear power plant radiation monitoring and early warning module is used for displaying radiation monitoring data generated by the radiation monitoring system data module and radiation monitoring data generated by the gamma camera radiation monitoring data module in a nuclear power plant three-dimensional simulation model, providing a visual three-dimensional radiation monitoring interface, sending an alarm signal when the radiation dosage level of a monitoring position exceeds an early warning value, and positioning the three-dimensional radiation monitoring interface to an alarm area.
Wherein, nuclear power plant radiation protection expert system still includes:
and the radiation shielding design module is used for performing radiation shielding design and automatic matching shielding structure according to any hot spot on the three-dimensional radiation monitoring interface to generate a shielding device.
Wherein, nuclear power plant radiation protection expert system still includes:
and the mechanical checking and radiation shielding checking module is used for selecting any shielding device generated by the radiation shielding design module and judging whether the design requirements of the nuclear power plant are met.
The mechanical checking and radiation shielding checking module is specifically used for calculating the linear density of the material according to the input shielding lead equivalent value and checking whether the pipeline stress meets the design requirement of the nuclear power plant after the shielding device is installed.
The radiation shielding design module is further used for generating a shielding device photocuring stereolithography STL file for 3D printing when the mechanical checking and radiation shielding checking module judges that the shielding device meets the design requirements of a nuclear power plant; the nuclear power plant radiation protection expert system further comprises:
and the shielding device 3D printing module is used for printing and generating the shielding device according to the input shielding device STL file.
The shielding device 3D printing module is specifically used for slicing the three-dimensional model according to the input shielding device STL file, outputting a common layered interface CLI file, and controlling the 3D printing equipment to print and generate the shielding device according to preset printing parameters.
The shielding device generated by printing is installed at a preset hot spot position, and the three-dimensional simulation model of the nuclear power plant displays the dose level of the shielding device after installation.
Wherein, nuclear power plant radiation protection expert system still includes:
the virtual reality and training module is used for establishing an immersive simulation system on the basis of the three-dimensional simulation model of the nuclear power plant according to the radiation monitoring data generated by the data module of the radiation monitoring system of the nuclear power plant, the radiation monitoring data generated by the gamma camera radiation measurement data module and the shielded dose level, and providing a wearable VR device and a motion capture device to realize the interaction between a person and a virtual scene.
The virtual reality and training module is further used for selecting a path with the minimum dosage for personnel to pass through, performing simulation drilling, maintenance drilling and training of nuclear accident emergency and disaster relief, and counting the information of the dosage of the personnel irradiated.
And if the mechanical checking and radiation shielding checking module judges that the shielding device does not meet the design requirement of the nuclear power plant, reducing the shielding lead equivalent value, and simultaneously rechecking according to the re-input reduced shielding lead equivalent value.
The embodiment of the invention has the beneficial effects that: integrating nuclear power plant radiation monitoring system data and gamma camera radiation measurement data in a nuclear power plant three-dimensional simulation model to provide visual three-dimensional radiation monitoring and early warning functions; the shielding scheme can be selected at will and formulated quickly aiming at the hot spots with higher required dosage, whether the shielding device meets the anti-seismic design requirement of the nuclear power plant is checked through professional software, and the shielded dosage level is displayed in the three-dimensional simulation model of the nuclear power plant; exporting the STL model file in the system through the checked shielding device, transmitting the STL model file to a 3D printing module of the shielding device, automatically sending a printing instruction by the system, and controlling 3D printing equipment to quickly finish manufacturing the shielding device; in addition, the expert system also has the functions of virtual simulation and training, the module integrates a three-dimensional simulation model of the nuclear power plant and real-time radiation detection data, an immersive simulation environment is provided, workers can carry out maintenance, emergency drilling and other training in the simulation environment, and the skill level and the emergency capacity of the workers are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a block diagram of a nuclear power plant radiation protection expert system according to an embodiment of the present invention.
Fig. 2 is a schematic view of a work flow of the mechanical verification and radiation shielding verification module in the embodiment of the present invention.
Detailed Description
The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.
Referring to fig. 1, an embodiment of the invention provides a nuclear power plant radiation protection expert system, including:
the nuclear power plant radiation monitoring and early warning module 5 is used for displaying radiation monitoring data generated by the radiation monitoring system data module 1 and radiation monitoring data generated by the gamma camera radiation monitoring data module 2 in a three-dimensional simulation model of the nuclear power plant, providing a visual three-dimensional radiation monitoring interface, sending an alarm signal when the radiation dosage level of a monitoring position exceeds an early warning value, and positioning the three-dimensional radiation monitoring interface to an alarm area.
The nuclear power plant radiation monitoring system data module 1 is used for establishing a nuclear power plant radiation monitoring data table and uploading existing radiation monitoring data of a nuclear power plant to an expert system to form one of basic databases. Specifically, the data butt joint of a radiation monitoring system server and a radiation shielding expert system is realized based on a network or RS-485, and the data types comprise: (a) measuring the number of the position machine set; (b) a system identification code; (c) a channel number; (d) a measurement type; (e) the radiation dose rate.
The gamma camera radiometric data module 2 is used for positioning hot spots and spectrum analysis, uploading gamma camera measured data to an expert system, and forming one of basic databases, wherein the data types comprise: (a) hot spot images; (b) a shooting position; (c) energy spectrum information.
The nuclear power plant three-dimensional model data module 3 is used for establishing a nuclear power plant three-dimensional simulation model and uploading existing three-dimensional simulation model data of the nuclear power plant to an expert system to form one of basic databases.
The 3D printing shielding material database module 4 is used for establishing a 3D printing shielding material basic data table and uploading the basic data of the 3D printing radiation protection material to form one of basic databases. Specifically, establishing the data type includes: (a) the material comprises the following components: comprises material element composition, each element mass ratio and each element molar ratio; (b) the density of the material; (c) and (3) actually measuring the line attenuation coefficient corresponding to the gamma ray source.
The nuclear power station radiation monitoring and early warning module 5 combines the nuclear power plant radiation detection system data and the gamma camera measurement data with the nuclear power plant three-dimensional model to realize the following functions: (a) displaying real-time measurement data of a radiation monitoring system in a three-dimensional model of a nuclear power plant; (b) displaying a radiation hot spot image shot by a gamma camera in a three-dimensional simulation model of the nuclear power plant; (c) when the radiation dose exceeds a set value, sending out acousto-optic alarm information; meanwhile, the three-dimensional radiation monitoring interface can be automatically positioned to an alarm area.
According to an aspect of the nuclear power plant radiation protection expert system proposed by the present invention, the system further comprises: the radiation shielding design module 6 enables a user to select any hot spot on the three-dimensional radiation monitoring interface to perform radiation shielding design, the system can automatically match a shielding structure, and a radiation shielding device photocuring stereolithography (stl) (stereolithography) file for 3D printing is generated and generated through professional software (such as solid works, UG, ProE and other three-dimensional design software). The radiation shield design module 6 specifically implements the following functions: (a) by selecting the shielding range, the expert system can automatically generate a shielding body according to the types of the pipeline and the equipment; (b) and generating a radiation shielding device STL file for 3D printing by professional software generation (three-dimensional design software such as SolidWorks, UG, ProE and the like).
According to an aspect of the nuclear power plant radiation protection expert system proposed by the present invention, the system further comprises: the mechanical checking and radiation shielding checking module 7 is used for enabling a user to freely select any shielding part, inputting a required shielding lead equivalent value, automatically calculating the linear density of the material by the system, checking whether the shielding device meets the design requirements of a power plant or not through professional software (such as pipeline stress analysis software such as ANSYS, SYSPIPE, PIPESTESS and the like), and reminding the user to properly reduce the shielding lead equivalent value if the shielding device does not meet the design requirements of the power plant, and meanwhile, re-matching the shielding structure according to the re-input shielding lead equivalent value; when the shielding structure meets the requirement of anti-seismic design, the system can also simulate the radiation level of the installed shielding body through professional software (such as MCNP, MicroShield and other particle transport programs) and display the radiation level on a three-dimensional radiation monitoring interface. The function of the mechanical checking and radiation shielding checking module 7 is mainly to check whether the shielding device generated by the radiation shielding design module 6 meets the design requirements of the nuclear power plant for earthquake resistance, radiation protection and the like, and specifically, to realize the following function (a) that whether the pipeline stress meets the design requirements of the nuclear power plant for earthquake resistance after the shielding device is installed is checked by professional software (such as pipeline stress analysis software like ANSYS, SYSPIPE, PIPESTSS and the like); (b) calculating the radiation level of the installed shielding device through a professional program (such as a particle transport program (MCNP) and MicroShield) and displaying the radiation level on a three-dimensional radiation monitoring interface; (c) the system automatically generates a check result report and sends the check result report to the radiation shielding design module 6. The specific work flow of the mechanics checking and radiation shielding checking module 7 is shown in fig. 2.
According to an aspect of the nuclear power plant radiation protection expert system proposed by the present invention, the system further comprises: the shielding device 3D printing module 8 is used for slicing the three-dimensional model through professional software (slicing software such as Magics) according to an input shielding device STL file, outputting a Common Layered Interface (CLI) file, receiving the CLI file by a printing control program, automatically configuring a scanning path by the system, printing process parameters, controlling the 3D printing equipment to complete the processing and manufacturing of shielding materials, and directly installing the printed shielding device at a preset hot spot position to realize hot spot protection.
According to an aspect of the nuclear power plant radiation protection expert system proposed by the present invention, the system further comprises: the virtual reality and training module 9 is used for establishing an immersive simulation system based on the radiation monitoring data generated by the nuclear power plant radiation monitoring system data module, the radiation monitoring data generated by the gamma camera radiation measurement data module and the shielded dose level, and realizing interaction between a person and a virtual scene by means of wearable VR equipment and a motion capture device, so that the following functions are realized: (a) automatically selecting an optimal path in a preferred mode, wherein the passing dosage of the personnel is reasonable and minimum under the optimal path; (b) the maintainers can carry out drills and training such as maintenance and the like in a virtual scene, and the system can count the information of the irradiated dose of the maintainers; (c) and performing simulation drilling under special conditions of nuclear accident emergency, disaster relief and the like.
As can be seen from the above description, the embodiments of the present invention have the following beneficial effects: integrating nuclear power plant radiation monitoring system data and gamma camera radiation measurement data in a nuclear power plant three-dimensional simulation model to provide visual three-dimensional radiation monitoring and early warning functions; the shielding scheme can be selected at will and formulated quickly aiming at the hot spots with higher required dosage, whether the shielding device meets the anti-seismic design requirement of the nuclear power plant is checked through professional software, and the shielded dosage level is displayed in the three-dimensional simulation model of the nuclear power plant; exporting the STL model file in the system through the checked shielding device, transmitting the STL model file to a 3D printing module of the shielding device, automatically sending a printing instruction by the system, and controlling 3D printing equipment to quickly finish manufacturing the shielding device; in addition, the expert system also has the functions of virtual simulation and training, the module integrates a three-dimensional simulation model of the nuclear power plant and real-time radiation detection data, an immersive simulation environment is provided, workers can carry out maintenance, emergency drilling and other training in the simulation environment, and the skill level and the emergency capacity of the workers are improved.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (7)
1. A nuclear power plant radiation protection expert system, comprising:
the nuclear power plant radiation monitoring and early warning module is used for displaying radiation monitoring data generated by the radiation monitoring system data module and radiation monitoring data generated by the gamma camera radiation monitoring data module in a nuclear power plant three-dimensional simulation model, providing a visual three-dimensional radiation monitoring interface, and sending an alarm signal when the radiation dosage level of a monitoring position exceeds an early warning value, wherein the three-dimensional radiation monitoring interface is positioned to an alarm area;
the radiation shielding design module is used for performing radiation shielding design and automatic matching shielding structure according to any hot spot on the three-dimensional radiation monitoring interface to generate a shielding device;
the mechanical checking and radiation shielding checking module is used for selecting any shielding device generated by the radiation shielding design module and judging whether the design requirements of the nuclear power plant are met;
the radiation shielding design module is further used for generating a shielding device photocuring stereolithography STL file for 3D printing when the mechanical verification and radiation shielding verification module judges that the shielding device meets the design requirements of a nuclear power plant; the nuclear power plant radiation protection expert system further comprises:
and the shielding device 3D printing module is used for printing and generating the shielding device according to the input shielding device STL file.
2. The expert system for radiation protection of nuclear power plant of claim 1, wherein the mechanical verification and radiation shielding verification module is specifically configured to calculate a material linear density according to an input shielding lead equivalent value, and verify whether pipeline stress after installation of the shielding device meets design requirements of the nuclear power plant.
3. The nuclear power plant radiation protection expert system according to claim 1, wherein the shielding device 3D printing module is specifically configured to slice the three-dimensional model according to an input shielding device STL file, output a common layered interface CLI file, and control a 3D printing device to print and generate the shielding device according to preset printing parameters.
4. The nuclear power plant radiation protection expert system of claim 3, wherein the print-generated shield is installed at a predetermined hot spot location, and wherein the three-dimensional simulation model of the nuclear power plant displays a dose level of the shield after installation.
5. The nuclear power plant radiation protection expert system of claim 4, further comprising:
the virtual reality and training module is used for establishing an immersive simulation system on the basis of the three-dimensional simulation model of the nuclear power plant according to the radiation monitoring data generated by the data module of the radiation monitoring system of the nuclear power plant, the radiation monitoring data generated by the gamma camera radiation monitoring data module and the shielded dose level, and providing interaction between a wearable VR device and a virtual scene by a person.
6. The expert system for radiation protection of nuclear power plant of claim 5, wherein the virtual reality and training module is further configured to select a path with the minimum dosage for personnel to pass through, perform simulation drilling, maintenance drilling and training for emergency and disaster relief of nuclear accidents, and count information of dosage of personnel to be radiated.
7. The expert system for radiation protection of nuclear power plant of claim 2, wherein if the mechanical verification and radiation shielding verification module determines that the shielding device does not meet the design requirements of the nuclear power plant, the shielding lead equivalent value is reduced and re-verified according to the re-entered reduced shielding lead equivalent value.
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| CN109360464A (en) * | 2018-12-24 | 2019-02-19 | 中国船舶重工集团公司第七〇九研究所 | A kind of ocean nuclear power platform emergency drilling simulation system based on VR technology |
| CN109974526B (en) * | 2019-04-29 | 2021-07-13 | 北京空间飞行器总体设计部 | Manned lunar landing radiation protection method based on assembly shield |
| CN110222378A (en) * | 2019-05-15 | 2019-09-10 | 中国辐射防护研究院 | Hot spot screening arrangement production method is radiated based on the pipeline of 3D printing and Meng Takaluo |
| CN111844758B (en) * | 2020-07-01 | 2021-11-16 | 西安交通大学 | Additive manufacturing method for multi-material controllable radiation shielding aerospace suit assembly |
| CN114169170B (en) * | 2021-12-08 | 2024-04-30 | 天津大学 | Virtual simulation system for nuclear security emergency |
| CN116211338A (en) * | 2023-05-06 | 2023-06-06 | 苏州六晶医疗科技有限公司 | X-ray protection method and system based on scene data processing |
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