CN106777832A - A kind of digital reactor - Google Patents

Abstract

The invention discloses a digital reactor, which combines the multi-specialty process simulation with the design and verification process, and iterates each other, so that the design result is more optimized; the multi-dimensional reactor state information expression is adopted, which can more truly reflect the construction of the reactor design result and working conditions. The nuclear energy multi-discipline process simulation system integrates the design process simulation, equipment-level 3D simulation, and nuclear emergency command and decision-making simulation into a unified simulation environment for comprehensive simulation; the design and verification system will be based on the nuclear energy multi-discipline process simulation system. The simulation results and the constraints of the reactor design are compared and analyzed, the design parameters are modified, feedback, and the next round of iterative simulation is performed until the constraints are met; the 3D virtual reality environment system superimposes the real-time simulation data of the nuclear energy multi-disciplinary process simulation system on the pre-stored On the 3D model of the real environment of the reactor, the status information of the reactor is presented intuitively in a multi-dimensional form.

Description

A digital reactor

technical field

The invention relates to reactor design and nuclear power device simulation technology, in particular to a digital reactor used in nuclear energy systems.

Background technique

The nuclear energy system design process usually carries out sub-system and sub-module design according to the system and function, and its verification is also carried out independently. Designers’ ideas cannot be immediately reflected and intuitively reflected. At the same time, due to the lack of integrated and coupled simulation tools, the problems in the design are often only exposed in the equipment processing and engineering construction stages, resulting in economic losses and delays in the construction period. Serious damage may result in equipment damage and personal injury or death.

In order to solve the above problems, some units and institutions at home and abroad have used digital technology to carry out related work on the design and verification of reactors, but mainly to study a specific problem. The patents applied by the Hefei Institute of Physical Science of the Chinese Academy of Sciences and the Northwest Institute of Nuclear Technology proposed a solution and specific process for a specific problem in the reactor design method; scholars from Tsinghua University proposed an evaluation index system for advanced nuclear power units, from the database The realization of the advanced nuclear reactor expert evaluation system is studied in detail in terms of design, system scheme preliminary design and detailed design. The design concept of interactive iteration in the reactor design process has not yet been proposed. The patent applied by Intel Engineering Simulation Technology (Dalian) Co., Ltd. is aimed at the design method of load transfer between different physical field models in CAE industrial design; relevant domestic scholars have conducted a lot of research on the coupling method of reactor physics and thermal engineering; Paul Xie, Switzerland Le Institute proposes to apply advanced reactor physics, thermal engineering, and system simulation models for multi-physics behavior prediction of light water reactors. The full physical process simulation model of the nuclear energy system is used in reactor design. The full physical composition simulation model includes core physical analysis modules, system thermal hydraulic calculation modules, fuel performance analysis modules, and reactor structure analysis modules, which have not yet been proposed. Researchers from Nanhua University applied 4D visualization theory in nuclear power plant pipeline installation to realize the visualization of pipeline installation process and installation progress; researchers from Tsinghua University proposed a 3D visualization system for high-temperature gas-cooled reactors developed based on OPENGL, and the calculation results of the simulation model It can be transmitted to the visualization system in real time, and the 3D visualization processing of the field measured data can realize the data interaction between the simulation calculation program and the 3D platform through the memory mapping file; New issues that arise in domain applications, especially for the conceptual design phase of reactors. The application of visualization technology in the reactor aided design process to realize the multi-dimensional expression of reactor state information (1D\2D\3D\4D) has not yet been proposed.

Contents of the invention

In view of this, the present invention provides a digital reactor for nuclear energy systems, which combines the multi-disciplinary process simulation with the design and verification process, and iterates each other, so that the design results are more optimized; the multi-dimensional reactor state information expression is used, which can More realistically reflect the construction and operation of the reactor design results.

In order to solve the problems of the technologies described above, the present invention is achieved in that:

A digital reactor, including: nuclear energy multi-disciplinary process simulation system, design and verification system and 3D virtual reality environment system;

The nuclear energy multi-discipline process simulation system is used to integrate the three-part simulation functions of design process simulation, equipment-level 3D simulation, nuclear emergency command and decision-making simulation into a unified simulation environment, and conduct multi-discipline process simulation according to the externally input reactor design parameters Simulation; among them, design process simulation, equipment-level 3D simulation, and nuclear emergency command and decision-making simulation are coupled through data exchange, so that their respective simulation parameters can participate in the simulation calculation of other parts in real time;

The design and verification system is used to obtain the simulation results of the nuclear energy multi-discipline process simulation system through the data communication component; compare and analyze the obtained simulation results with the constraints of the pre-stored reactor design, and judge whether the current design parameters meet the constraints, If it is not satisfied, the design and verification system will receive the modification of the design parameters by the user, and the modified design parameters will be fed back to the nuclear energy multi-discipline process simulation system, and the nuclear energy multi-discipline process simulation system will carry out the next round according to the modified design parameters. Iterative simulation until the constraint conditions are met, then the verification is passed, the report is output, and the optimization design ends;

The 3D virtual reality environment system is used to obtain the real-time simulation data of the nuclear energy multi-discipline process simulation system through the data communication component, including the simulation process and results of the design process simulation and the equipment level 3D simulation, through the 3D simulation of the pre-stored real environment of the reactor The real-time simulation data is superimposed on the model, and the status information of the reactor is presented intuitively in a multi-dimensional form.

Preferably, the nuclear energy multi-disciplinary process simulation system includes a reactor design process simulation subsystem, an equipment-level three-dimensional simulation subsystem, and a nuclear emergency command and decision-making subsystem;

The reactor design process simulation subsystem is used to store the simulation models of all professional process systems in the reactor design process, perform simulation calculations according to the input reactor design parameters, and send the simulation calculation results to the equipment-level three-dimensional simulation subsystem and the nuclear emergency response system. The command and decision-making subsystem also sends the simulation calculation process and results to the 3D virtual reality environment system for three-dimensional display;

The equipment-level three-dimensional simulation subsystem is used to store equipment models of key equipment in the reactor design process, and use the equipment model to calculate and simulate key design parameters of equipment according to the simulation calculation results provided by the reactor design process simulation subsystem; the key design The parameters are also fed back to the reactor design process simulation subsystem, so that the parameters of the equipment-level 3D simulation participate in the design process simulation calculation in real time; the simulation calculation process and results are also sent to the 3D virtual reality environment system for 3D display;

The nuclear emergency command and decision-making subsystem is used to store the nuclear emergency command model and decision-making model, and according to the simulation calculation results of the reactor design process simulation subsystem, extract the simulation data of the accident working conditions, carry out emergency command and auxiliary decision-making, and generate Realize the disposal suggestions for reactor emergency command decision-making under accident conditions and evaluate the impact scope and degree of the accident, and feed back to the reactor design process simulation subsystem.

Preferably, the simulation models of the specialized process systems in the reactor design process simulation subsystem are coupled together to transfer parameters to each other to realize mutual parameter verification.

Preferably, the device models stored in the device-level 3D simulation subsystem include geometric simulation models and performance simulation models.

Preferably, the equipment-level three-dimensional simulation subsystem is further connected to in-service nuclear power plant units to realize real-time monitoring of reactor status.

Preferably, the 3D virtual reality environment system has the following two types of functions: 1) virtual reality display of reactor operating conditions, including the normal operation process of the reactor and the phenomenon of accidents; 2) three-dimensional simulation deduction, that is, the design and verification system After the verification is completed, use the verified design parameters to carry out equipment selection and three-dimensional virtual display of the installation and construction process.

Beneficial effect:

(1) Combining the multi-disciplinary process simulation with the design and verification process and iterating each other makes the design results more optimized; the multi-dimensional reactor status information expression can more truly reflect the construction and working conditions of the reactor design results, and assist in the completion Reactor design and verification process.

(2) The models used in the multi-specialty process simulation process of the present invention are coupled with each other to transfer parameters to each other, so as to realize mutual parameter verification. In order to check whether the parameters of the entire reactor design are appropriate, to ensure the correctness and reliability of the construction, installation and integration, and to reduce potential problems that may exist during the design stage.

(3) The present invention can comprehensively simulate and predict various performances, parameters and other characteristics of the real reactor in the whole life cycle from design, manufacture, operation to decommissioning, etc., and provide a 4D dynamic virtual environment for design, analysis and verification for the nuclear energy system.

(4) The equipment-level 3D simulation subsystem realizes real-time monitoring of the reactor status by connecting to the in-service units.

Description of drawings

Fig. 1 is a compositional block diagram of the digital reactor of the present invention.

Fig. 2 is the information interaction relationship of each subsystem in the digital reactor of the present invention.

detailed description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

The present invention provides a digital reactor, the core idea of which is to integrate the simulation functions of design process simulation, equipment-level three-dimensional simulation, nuclear emergency command and decision-making simulation into a unified simulation environment, and perform full-professional real-time simulation. The data communication components are used to map the real-time simulation results of the nuclear energy multi-disciplinary process simulation system to the design and verification system and the 3D virtual reality environment to realize real-time visualization of design, modification and simulation.

The digital reactor of the present invention will be described in detail below in conjunction with FIG. 1 . As shown in Figure 1, the digital reactor includes three parts: nuclear energy multi-disciplinary process simulation system, design and verification system, and 3D virtual reality environment system.

The nuclear energy multi-discipline process simulation system is used to integrate design process simulation, equipment-level 3D simulation, nuclear emergency command and decision-making simulation into a unified simulation environment for full-professional high-fidelity real-time simulation. The nuclear energy multi-discipline process simulation system performs multi-discipline process simulation according to the externally input reactor design parameters; among them, the design process simulation, equipment-level 3D simulation and nuclear emergency command and decision-making simulation are coupled through data exchange, so that the respective simulation parameters Participate in the simulation calculation of other parts in real time.

The nuclear multi-specialty process simulation system includes: reactor design process simulation subsystem, equipment-level three-dimensional simulation subsystem, nuclear emergency command and decision-making subsystem.

The reactor design process simulation subsystem is used to store the simulation models of all professional process systems in the reactor design process, including overall design, reactor engineering, radiation protection and shielding, process system, electrical system, instrument and control system, civil engineering, equipment, layout design And the simulation model of the top ten majors of plant site planning, each major corresponds to a simulation model, the simulation calculation is carried out according to the input reactor design parameters, the simulation results are obtained, and the simulation results are sent to the equipment-level 3D simulation subsystem and nuclear emergency command and decision-making The subsystem also sends the simulation process data and simulation results to the 3D virtual reality environment subsystem for three-dimensional display.

The design of traditional nuclear power plants is usually divided into the above ten specialties for independent system design, and then independent simulation and independent verification. If the verification results meet the design requirements, it is considered that the design of this specialization is reasonable. These systems ultimately need to be built and installed together, but because each discipline is independently designed and verified, potential problems will not be exposed until the manufacturing or installation stage. For example, for a certain design parameter, it meets the design requirements of system A, but it is not suitable for system B. In order to solve this problem, the present invention couples the simulation models of various professional process systems in the reactor design process simulation subsystem together, transfers parameters to each other, and realizes mutual parameter verification, thereby checking whether the parameters of the entire reactor design are appropriate and ensuring the integration of construction and installation After the correctness and reliability, reduce the potential problems that may exist in the design stage.

Preferably, the reactor design process simulation subsystem manages the data and calculation results of each professional process simulation model through a unified database, so as to realize the integration and data interaction among various professional process simulation models.

The equipment-level three-dimensional simulation subsystem is used to store equipment models of key equipment in the reactor design process, including at least geometric simulation models and performance simulation models. The equipment models require accurate and detailed modeling. According to the simulation calculation results provided by the reactor design process simulation subsystem, the key design parameters of the equipment are calculated and simulated by using the equipment model, including the appearance size, equipment material properties, and the installation process of parts, etc., and the key design parameters are also fed back to the reactor design process The simulation subsystem enables the parameters of the equipment-level 3D simulation to participate in the design process simulation calculation in real time; the simulation calculation process and results are also sent to the 3D virtual reality environment subsystem for 3D display. For example, for the design of a main pump equipment, if its size and appearance design meet the professional design requirements of equipment, but it may not meet the professional requirements of civil engineering during installation, such as no installation location, or does not match the installation environment. The function of this subsystem is to carry out equipment-level geometric simulation (including equipment installation, collision interference detection, etc.) and performance simulation. The equipment-level 3D simulation subsystem also realizes real-time monitoring of the reactor status by connecting to the in-service nuclear power plant unit, and the monitoring data is sent to the 3D virtual reality environment system for 3D display.

The nuclear emergency command and decision-making subsystem is used to store the nuclear emergency command model and decision-making model. According to the simulation calculation results of the reactor design process simulation subsystem, the simulation data of the accident conditions are extracted for emergency command and auxiliary decision-making, that is, the emergency plan Verification, generating and outputting disposal suggestions for implementing reactor emergency command decision-making under accident conditions and evaluating the impact scope and degree of the accident. Among them, disposal suggestions such as how to rescue, how to evacuate and so on.

The simulation calculation results of the equipment-level 3D simulation subsystem and the simulation calculation results of the nuclear emergency command and decision-making subsystem will provide input parameter information for the reactor process design simulation subsystem.

Design and verification system, which stores the constraints of reactor design, such as safety review requirements and equipment process parameter requirements. Obtain the simulation results of the nuclear energy multi-disciplinary process simulation system (mainly the reactor design process simulation subsystem) through the data communication component, compare and analyze the obtained simulation results with the pre-stored reactor design constraints, and judge whether the current design parameters meet the constraints , if it is not satisfied, the design and verification system receives the modification of the design parameters by the user, and the modified design parameters are fed back to the nuclear energy multi-discipline process simulation system, and the nuclear energy multi-discipline process simulation system performs the next step according to the modified design parameters Rounds of iterative simulation until the constraints are met, then the verification is passed, the report is output, and the optimization design ends. Preferably, the design and verification system provides a unified simulation framework, including man-machine interface and process management, wherein process management is the management of status, data and documents in the above-mentioned design verification process; Verify the limit conditions of the system input constraint design; design the system according to the process to access the parameters of other subsystems in real time for comparative analysis. It is also possible to output optimal design parameters and reports based on comparative analysis results.

The 3D virtual reality environment subsystem stores the 3D model of the real environment of the reactor. Based on virtual reality technology, the subsystem obtains the real-time simulation data of the nuclear energy multi-discipline process simulation system through the data communication component, including the simulation process and results of the design process simulation and equipment-level 3D simulation. The real-time simulation data is superimposed on the model, and the status information of the reactor is presented intuitively in a multi-dimensional form. Among them, 1D is a digital display, 2D is a curve or table display, 3D is a data field or virtual scene display, and 4D is a three-dimensional space model superimposed Display of one-dimensional status information. The main functions of this subsystem are: 1) The virtual reality display of the operating conditions of the reactor, including the normal operation process of the reactor and the phenomenon of accidents, giving people a more intuitive and profound experience; for example, the surrounding geographical environment and radionuclides Diffusion is visualized in 3D. 2) 3D simulation deduction. That is, after the verification of the design and verification system is completed, the 3D virtual reality environment subsystem also uses the verified design parameters to perform 3D virtual simulation of equipment selection and installation and construction processes; such as the installation of key equipment, the disassembly process and results of parts. A preview through 3D virtual reality helps to identify problems and master the installation process.

The information interaction of each subsystem in the system of the present invention will be described below in conjunction with FIG. 2 , and the symbols in the following description correspond to those in FIG. 2 .

① The reactor design process simulation subsystem is substituted into the simulation model of the professional process system according to the design parameters of the reactor, and carries out the joint simulation of the multi-simulation model of the multi-specialty process;

②The simulation calculation results of the reactor process design simulation subsystem (including flow, pressure, temperature, water level parameters, etc.) provide input parameter information for the equipment-level 3D simulation subsystem; the equipment-level 3D simulation subsystem performs equipment-level simulation, including geometric simulation and performance simulation;

③The simulation calculation results (including size, material, and attribute parameters) of the equipment-level 3D simulation subsystem provide input parameter information for the reactor process design simulation subsystem;

④ The simulation calculation results of the reactor process design simulation subsystem (including parameters such as radiation dose, wind speed, flow rate, diffusion speed and meteorological information) provide input parameter information for the nuclear emergency command and decision-making subsystem;

⑤ The simulation calculation results of the nuclear emergency command and decision-making subsystem (including parameters such as radiation dose, nuclide diffusion information, and evacuation routes) provide input parameter information for the reactor process design simulation subsystem;

⑥ Judging the simulation calculation results of the reactor design process simulation subsystem, if it meets the restrictive conditions, the verification is passed and the design is completed;

⑦If the restriction conditions are not met, modify the design parameters through the design and verification system, and proceed to the next iteration;

⑧ The simulation calculation process and results of the reactor design process simulation subsystem are sent to the 3D virtual reality environment subsystem for three-dimensional display;

⑨The simulation calculation process and results of the equipment-level 3D simulation subsystem are sent to the 3D virtual reality environment subsystem for 3D display.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. A digital reactor, characterized in that it comprises: nuclear energy multi-specialty process simulation system, design and verification system and 3D virtual reality environment system; The nuclear energy multi-discipline process simulation system is used to integrate the three-part simulation functions of design process simulation, equipment-level 3D simulation, nuclear emergency command and decision-making simulation into a unified simulation environment, and conduct multi-discipline process simulation according to the externally input reactor design parameters Simulation; among them, design process simulation, equipment-level 3D simulation, and nuclear emergency command and decision-making simulation are coupled through data exchange, so that their respective simulation parameters can participate in the simulation calculation of other parts in real time; The design and verification system is used to obtain the simulation results of the nuclear energy multi-discipline process simulation system through the data communication component; compare and analyze the obtained simulation results with the constraints of the pre-stored reactor design, and judge whether the current design parameters meet the constraints, If it is not satisfied, the design and verification system will receive the modification of the design parameters by the user, and the modified design parameters will be fed back to the nuclear energy multi-discipline process simulation system, and the nuclear energy multi-discipline process simulation system will carry out the next round according to the modified design parameters. Iterative simulation until the constraint conditions are met, then the verification is passed, the report is output, and the optimization design ends; The 3D virtual reality environment system is used to obtain the real-time simulation data of the nuclear energy multi-discipline process simulation system through the data communication component, including the simulation process and results of the design process simulation and the equipment level 3D simulation, through the 3D simulation of the pre-stored real environment of the reactor The real-time simulation data is superimposed on the model, and the status information of the reactor is presented intuitively in a multi-dimensional form. 2. The digital reactor according to claim 1, characterized in that, the multi-specialty process simulation system for nuclear energy comprises a reactor design process simulation subsystem, an equipment-level three-dimensional simulation subsystem, and a nuclear emergency command and decision-making subsystem; The reactor design process simulation subsystem is used to store the simulation models of all professional process systems in the reactor design process, perform simulation calculations according to the input reactor design parameters, and send the simulation calculation results to the equipment-level three-dimensional simulation subsystem and the nuclear emergency response system. The command and decision-making subsystem also sends the simulation calculation process and results to the 3D virtual reality environment system for three-dimensional display; The equipment-level three-dimensional simulation subsystem is used to store equipment models of key equipment in the reactor design process, and use the equipment model to calculate and simulate key design parameters of equipment according to the simulation calculation results provided by the reactor design process simulation subsystem; the key design The parameters are also fed back to the reactor design process simulation subsystem, so that the parameters of the equipment-level 3D simulation participate in the design process simulation calculation in real time; the simulation calculation process and results are also sent to the 3D virtual reality environment system for 3D display; The nuclear emergency command and decision-making subsystem is used to store the nuclear emergency command model and decision-making model, and according to the simulation calculation results of the reactor design process simulation subsystem, extract the simulation data of the accident working conditions, carry out emergency command and auxiliary decision-making, and generate Realize the disposal suggestions for reactor emergency command decision-making under accident conditions and evaluate the impact scope and degree of the accident, and feed back to the reactor design process simulation subsystem. 3. The digital reactor according to claim 2, characterized in that, the simulation models of each specialized process system in the reactor design process simulation subsystem are coupled together, and the parameters are transferred to each other to realize mutual parameter verification. 4. The digital reactor according to claim 2, wherein the equipment model stored in the equipment-level three-dimensional simulation subsystem includes a geometric simulation model and a performance simulation model. 5. The digital reactor according to claim 2, characterized in that, the equipment-level three-dimensional simulation subsystem is further connected to in-service nuclear power plant units to realize real-time monitoring of the state of the reactor. 6. The digital reactor as claimed in claim 2, characterized in that, the 3D virtual reality environment system has the following two types of functions: 1) the virtual reality display of reactor operating conditions, including the process of normal operation of the reactor and the occurrence of accidents. Phenomenon; 2) 3D simulation deduction, that is, after the design and verification system verification is completed, use the verified design parameters to perform 3D virtual display of equipment selection and installation and construction process.