A research reactor overall design system and method

Abstract

The application discloses a research reactor overall design system and method, which realizes the whole-chain optimization of the research reactor overall design from demand input to parameterization and from single-discipline calculation to multi-specialty cooperation through a closed-loop mechanism of demand traction, two-way coupling of the reactor core and irradiation application, cross-disciplinary iterative optimization and comprehensive performance evaluation. Compared with the prior art, the application can significantly improve the efficiency and reliability of the research reactor overall design, ensures that the design result meets the scientific research and application tasks, the safety and economic requirements, and thus guarantees the multifunctional adaptability and global optimization of the research reactor in the early design stage.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of nuclear technology and industrial technology, and in particular to a research reactor overall design system and method. Background Technology

[0002] Research reactors, as crucial basic research and experimental facilities in the fields of nuclear science and technology, play an irreplaceable role in nuclear fuel and material irradiation testing, radioactive isotope irradiation production, and neutron science research. They are vital in supporting nuclear energy development strategies, advancing cutting-edge nuclear science research, and serving national economic development. In the construction and operation of research reactors, the overall design holds a central and overarching position, serving as the top-level framework and decision-making basis for reactor design. The overall design must not only meet basic requirements such as reactor type selection, power scale, and safety indicators, but also comprehensively consider multi-functional application scenarios, including scientific research experiments, irradiation processing, and teaching and training, thereby achieving a balance between safety, reliability, and economy.

[0003] The overall design of the research reactor involves deep collaboration across multiple disciplines, including reactor physics, thermal hydraulics, structural mechanics, fuel element design, control and protection systems, operation and management, and irradiation applications. Due to the high degree of multidisciplinary coupling and complex design interfaces in research reactors, traditional decentralized design methods often result in low design efficiency, insufficient collaboration between different disciplines, and problems such as inconsistent interface information, long design iteration cycles, and insufficient system coupling.

[0004] As the functional requirements of research reactors continue to increase, especially in multi-objective integrated applications and rapid R&D response, higher demands are placed on the efficiency and reliability of the overall design. Summary of the Invention

[0005] This application provides a research reactor overall design system and method, which can improve the efficiency and reliability of research reactor overall design.

[0006] This invention provides a research reactor overall design system, including: a requirements analysis module, an overall design parameter module, a core design module, a core thermal-hydraulic design module, a reactor structure design module, an irradiation application system and equipment design module, different professional design modules, and a comprehensive performance evaluation module; wherein, The requirements analysis module is used to analyze the multi-functional application requirements of the research reactor and generate input parameters and constraints for the overall design of the research reactor. The overall design parameter module is used to convert the input parameters and constraints of the generated research reactor overall design into overall design parameters and store them according to the pre-set correspondence. The core design module is used to perform neutron physics calculations based on overall input condition parameters in order to obtain the core physics parameters of the research reactor. The core thermal-hydraulic design module is used to calculate thermal-hydraulic parameters, including core coolant flow rate, pressure drop, and temperature distribution, based on the obtained core physical parameters. The reactor structure design module is used to perform strength and seismic calculations and verifications of the pressure vessel, in-core components, and irradiation channels based on the calculation results of the core physical parameters and the core thermal-hydraulic design module. The irradiation application system and equipment design module is used to guide the layout of irradiation targets and test pieces and the utilization of irradiation resources using the obtained core physical parameters, and to adjust the core physical parameters with the feedback correction information in order to correct design constraints and requirements to achieve dynamic optimization of the core irradiation scheme. Different professional design modules are used to perform calculations in different professional designs based on the optimized core physical parameters, design constraints and requirements, and to further optimize the core physical parameters, design constraints and requirements based on the calculation results; The comprehensive performance evaluation module is used to systematically evaluate the optimized core physical parameters, design constraints, and requirements, and to store and update the core physical parameters, design constraints, and requirements that meet the evaluation criteria.

[0007] In one exemplary instance, the different professional design modules include: The fuel assembly design module is used for fuel element and fuel assembly structural design, fuel consumption analysis, and irradiation life assessment. The reactive control system design module is used to design the structure and drive characteristics of control components; The nuclear safety and radiation protection design module is used to analyze radioactive source terms, dose distribution, and shielding requirements.

[0008] In one exemplary instance, the different professional design modules further include one or any combination of the following: The main process system and equipment design module is used to determine the design schemes for coolant circuits, pipelines, and main process equipment such as heat exchangers, pumps, and valves based on the updated core physical parameters, design constraints, and requirements. A dedicated safety facility design module is provided to determine the process flow and design scheme of dedicated safety facilities such as the safety injection system, waste heat removal system, and reactor building isolation system based on the updated core physical parameters, design constraints, and requirements. The instrumentation, control, and electrical system and equipment design module is used to design power systems, control systems, monitoring and measurement schemes, and safety protection schemes based on the updated core physical parameters, design constraints, and requirements. The auxiliary support system and equipment design module is used to design the secondary cooling water system, nuclear drainage system, ventilation and air conditioning system and radioactive waste treatment system based on the updated core physical parameters, design constraints and requirements. The building engineering design module is used to determine the overall layout of the factory, seismic design, fire protection system and construction drawing scheme based on the updated core physical parameters and design constraints and requirements. The digital module is used to build a digital management system and design analysis platform based on updated core physical parameters, design constraints and requirements, so as to realize process monitoring, data integration and operation and maintenance support in the design process; The test verification module is used to conduct research reactor scientific tests, test bench design and parameter verification based on the updated core physical parameters, design constraints and requirements, and to experimentally confirm key design results. The debugging and operation module is used to develop system debugging plans and operating procedures based on the updated core physical parameters, design constraints and requirements, and to complete system performance verification.

[0009] This application also provides a research reactor overall design method, including: The multi-functional application requirements of the research reactor are analyzed to generate input parameters and constraints for the overall design of the research reactor. Based on the pre-set correspondence, the input parameters and constraints of the generated overall design of the research reactor are converted into overall input condition parameters and stored. Neutron physics calculations are performed based on the overall input condition parameters to obtain the core physical parameters of the research reactor. The obtained core physical parameters are used to guide the layout of irradiated targets and test pieces and the utilization of irradiation resources. The feedback correction information is used to adjust the core physics design parameters to correct design constraints and requirements in order to achieve dynamic optimization of the core physics scheme. Based on the optimized core physical parameters and design constraints and requirements, calculations are performed in different professional designs, and the core physical parameters and design constraints and requirements are further optimized based on the calculation results. The optimized core physical parameters, design constraints, and requirements are systematically evaluated. The evaluation is compared to see if the core physical parameters meet the design constraints and application requirements. The evaluation results are stored and updated.

[0010] In one exemplary instance, prior to the system evaluation of the optimized core physical parameters and design constraints and requirements, the method further includes one or any combination of the following: Based on the updated core physical parameters, design constraints, and requirements, the main process system and dedicated safety facilities are designed. Based on the updated core physical parameters, design constraints, and requirements, design the instrumentation, control, and electrical systems and auxiliary support systems. Based on the updated core physical parameters, design constraints, and requirements, architectural engineering design will be carried out; Based on the updated core physical parameters, design constraints, and requirements, digital design is performed; Based on the updated core physical parameters, design constraints, and requirements, experimental verification will be conducted; Based on the updated core physical parameters, design constraints, and requirements, debugging and operation were carried out.

[0011] In one exemplary instance, the calculations performed in different professional designs include: Calculate the core coolant flow rate, pressure drop, and temperature distribution; Perform strength and seismic calculations and verifications for pressure vessels, in-core components, and irradiation ducts; Perform fuel element structural design, fuel consumption analysis, and irradiation life assessment; Design the structure and driving characteristics of the control components; Analyze the radioactive source term, dose distribution, and shielding requirements.

[0012] In one exemplary instance, the research reactor has multiple applications including: nuclear fuel and material irradiation experiments, isotope preparation, neutron beam experiments, and related scientific research experiments.

[0013] In one exemplary instance, the modification of design constraints and requirements to achieve dynamic optimization of the core physics scheme includes: The obtained core physical parameters are used to guide the placement of irradiated targets and test pieces and the utilization of irradiation resources; Feedback information is generated based on the functional requirements of the irradiation application system and equipment design. The core physical parameters, design constraints, and requirements were revised based on the feedback information.

[0014] This application embodiment further provides a computer-readable storage medium storing computer-executable instructions for executing the research reactor overall design method described in any of the preceding claims.

[0015] This application embodiment also provides a computer device, including a memory and a processor, wherein the memory stores the following instructions executable by the processor: steps for performing the research reactor overall design method described in any of the above claims.

[0016] The research reactor overall design system provided in this application, through a closed-loop mechanism of demand-driven design, bidirectional coupling of reactor core and irradiation applications, interdisciplinary iterative optimization, and comprehensive performance evaluation, achieves end-to-end optimization of the research reactor overall design, from demand input to parameterization, and from single-discipline computation to multi-disciplinary collaboration. Compared with existing technologies, this invention can significantly improve the efficiency and reliability of research reactor overall design, ensuring that the design results meet both scientific research and application tasks, as well as safety and economic requirements, thereby guaranteeing the multifunctional adaptability and global optimization of the research reactor from the initial design stage.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0018] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0019] Figure 1 This is a schematic diagram of the overall design system of the research reactor in the embodiments of this application; Figure 2 This is a flowchart illustrating the overall design method of the research reactor in the embodiments of this application. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be arbitrarily combined with each other.

[0021] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0023] It is understood that the terms "first" and "second" used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0025] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0026] The steps illustrated in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases the steps shown or described may be performed in a different order than that presented here.

[0027] Traditional distributed design methods have shortcomings in improving cross-disciplinary collaboration efficiency, achieving rapid demand-driven response, and ensuring consistency of design results. Therefore, it is necessary to develop a general design system for research reactors, establish a demand-driven design and development system, and promote the efficient integration and collaborative iteration of multidisciplinary design information to further improve the efficiency and reliability of overall research reactor design.

[0028] Figure 1 This is a schematic diagram of the overall design system of the research reactor in the embodiments of this application, such as... Figure 1 As shown, it includes at least: a requirements analysis module, an overall design parameter module, a core design module, a core thermal-hydraulic design module, a reactor structure design module, an irradiation application system and equipment design module, different professional design modules, and a comprehensive performance evaluation module; among which, The requirements analysis module is used to analyze the multi-functional application requirements of the research reactor and generate input parameters and constraints for the overall design of the research reactor. The overall design parameter module is used to convert the input parameters and constraints of the generated research reactor overall design into overall design parameters and store them according to the pre-set correspondence. The core design module is used to perform neutron physics calculations based on overall input condition parameters in order to obtain the core physics parameters of the research reactor. The core thermal-hydraulic design module is used to calculate thermal-hydraulic parameters, including core coolant flow rate, pressure drop, and temperature distribution, based on the obtained core physical parameters. The reactor structure design module is used to perform strength and seismic calculations and verifications of the pressure vessel, in-core components, and irradiation ducts based on the obtained core physical parameters and the calculation results of the core thermal-hydraulic design module. The irradiation application system and equipment design module is used to guide the layout of irradiation targets and test pieces and the utilization of irradiation resources using the obtained core physical parameters, and to adjust the core physical parameters with the feedback correction information in order to correct design constraints and requirements to achieve dynamic optimization of the core irradiation scheme. Different professional design modules are used to take the optimized core physical parameters, design constraints and requirements as input, perform calculations in different professional designs, and further optimize the core physical parameters, design constraints and requirements based on the calculation results; The comprehensive performance evaluation module is used to systematically evaluate the optimized core physical parameters, design constraints, and requirements, and to store and update the core physical parameters, design constraints, and requirements that meet the evaluation criteria.

[0029] The research reactor overall design system provided in this application, through a closed-loop mechanism of demand-driven design, bidirectional coupling of reactor core and irradiation applications, interdisciplinary iterative optimization, and comprehensive performance evaluation, achieves end-to-end optimization of the research reactor overall design, from demand input to parameterization, and from single-discipline computation to multi-disciplinary collaboration. Compared with existing technologies, this invention can significantly improve the efficiency and reliability of research reactor overall design, ensuring that the design results meet both scientific research and application tasks, as well as safety and economic requirements, thereby guaranteeing the multifunctional adaptability and global optimization of the research reactor from the initial design stage.

[0030] In one exemplary instance, the research reactor overall design system provided in this application embodiment may include different specialized design modules, such as: The fuel assembly design module is used for fuel element and fuel assembly structural design, fuel consumption analysis, and irradiation life assessment. The reactive control system design module is used to design the structure and drive characteristics of control components such as control rods or control drums; The nuclear safety and radiation protection design module is used to analyze radioactive source terms, dose distribution, and shielding requirements.

[0031] After each specialized module completes its calculations, the results are fed back to the core design module and the overall design parameter module. This allows for adjustments to the core physics scheme and design inputs based on the feedback, resulting in multiple iterations until the results from each specialty converge to meet the design constraints. Through this interdisciplinary iterative process, the design scheme achieves comprehensive optimization across physics, thermal engineering, safety, and application.

[0032] In one exemplary instance, the research reactor overall design system provided in this application embodiment may further include one or any combination of the following different professional design modules: The main process system and equipment design module is used to determine the design schemes for coolant circuits, pipelines, and main process equipment such as heat exchangers, pumps, and valves based on updated core physical parameters, design constraints, and requirements. A dedicated safety facility design module is provided to determine the process flow and design scheme of dedicated safety facilities such as the safety injection system, residual heat removal system, and reactor building isolation system based on updated core physical parameters, design constraints, and requirements. The instrumentation, control, and electrical system and equipment design module is used to design power systems, control systems, monitoring and measurement schemes, and safety protection schemes based on updated core physical parameters, design constraints, and requirements. The auxiliary support system and equipment design module is used to design the secondary cooling water system, nuclear drainage system, ventilation and air conditioning system and radioactive waste treatment system based on the updated core physical parameters, design constraints and requirements. The building engineering design module is used to determine the overall layout of the plant, seismic design, fire protection system and construction drawing scheme based on the updated core physical parameters and design constraints and requirements; The digital module is used to build a digital management system and design analysis platform based on updated core physical parameters, design constraints and requirements, so as to realize process monitoring, data integration and operation and maintenance support in the design process; The test verification module is used to conduct research reactor scientific tests, test bench design and parameter verification based on updated core physical parameters and design constraints and requirements, and to experimentally confirm key design results. The debugging and operation module is used to develop system debugging plans and operating procedures based on updated core physical parameters, design constraints and requirements, and to complete system performance verification.

[0033] Through the layer-by-layer implementation of the above modules, not only is a closed-loop process of the overall design of the research reactor from demand-driven to final evaluation guaranteed, but also effects such as matching, reliability, traceability, coupling, global optimization, accident resistance, operability, engineering feasibility, life cycle controllability, design verification, and final comprehensive optimization are brought about at each stage, thereby significantly improving the efficiency, safety, and adaptability of the overall design of the research reactor.

[0034] The research reactor overall design system provided in this application takes demand-driven design as its starting point. Through overall design control, combined with the deep coupling of core design and irradiation application, and with the cooperation of cross-disciplinary collaboration and iterative optimization mechanisms, a complete research reactor overall design scheme is finally formed through comprehensive performance evaluation.

[0035] Figure 2 This is a flowchart illustrating the overall design method of the research reactor in the embodiments of this application, such as... Figure 2 As shown, it may include: Step 200: Analyze the multi-functional application requirements of the research reactor to generate input parameters and constraints for the overall design of the research reactor.

[0036] In one exemplary instance, analyzing the multifunctional application requirements of a research reactor can include activities such as nuclear fuel and material irradiation testing, radioactive isotope irradiation production, and neutron science research. Then, by combining the parameter requirements for neutron flux density, reactor power, and irradiation space proposed by different application fields, the input parameters and constraints for the overall design of the research reactor can be generated.

[0037] In one exemplary instance, step 200 can analyze the multifunctional application requirements of the research reactor by calling the requirements analysis module, and generate input parameters and constraints for the overall design of the research reactor.

[0038] In one exemplary instance, the multifunctional applications of the research reactor may include, but are not limited to, nuclear fuel and material irradiation experiments, isotope preparation, neutron beam experiments, and related scientific research experiments.

[0039] In one exemplary instance, the specific requirements of each application scenario may include, but are not limited to, the following: nuclear fuel and material irradiation test requirements (such as high neutron flux density levels and neutron energy spectrum control); radioactive isotope production requirements (such as target arrangement, irradiation location, and production targets); and neutron science research requirements (such as cold neutron sources and neutron beam experiments).

[0040] In one exemplary instance, the input parameters and constraints for studying the overall design of the reactor may include, but are not limited to, neutron flux levels, energy spectrum distribution, safety margins, and operating cycle requirements.

[0041] Step 200 provides clear design goals and boundary conditions for subsequent steps, enabling the overall design of the research reactor in this application to directly serve application requirements.

[0042] Step 201: Based on the pre-set correspondence, convert the input parameters and constraints of the generated research reactor overall design into overall input condition parameters and store them.

[0043] In one exemplary instance, step 201 can be performed by calling the overall design parameter module to convert the input parameters and constraints of the generated research reactor overall design into overall input condition parameters and store them according to the pre-set correspondence.

[0044] In one exemplary instance, the overall input parameters may include, but are not limited to, the following: reactor power range, fuel type, geometric boundaries, neutron flux target, safety margin requirements, etc.

[0045] Based on the requirements analysis results, this step established a database of overall design parameters for the research reactor, transforming different application requirements into quantifiable design parameters. For example, scientific research and experimental requirements are transformed into core design parameters, such as active zone geometry, fuel loading, and power levels; isotope preparation requirements are transformed into irradiation application system parameters, such as target arrangement and neutron energy spectrum distribution; neutron beam experiment requirements are transformed into neutron source and beam pipe design parameters; and safety constraints are transformed into control and safety design parameters, such as control rod value, coolant pressure drop limits, and dose constraint indicators.

[0046] Step 201 involves storing and managing the aforementioned core parameters in a unified manner within the overall design parameter database for the research reactor. This database also serves as a data interaction hub, providing a unified input / output interface for each design module and controlling the sequence of the design process. This ensures data consistency and traceability between different professional modules, thereby avoiding deviations in the cross-disciplinary information transmission process.

[0047] Step 202: Perform neutron physics calculations based on the overall input condition parameters to obtain the core physics parameters of the research reactor.

[0048] In one exemplary instance, neutron physics calculations can be performed using deterministic or probabilistic methods based on overall input condition parameters to obtain the core physics parameters of the research reactor. These core physics parameters may include, but are not limited to, the core effective multiplication factor, power distribution, neutron flux density distribution, neutron energy spectrum, and burnup characteristics.

[0049] In one exemplary instance, step 202 can be performed by invoking the core design module to conduct neutron physics calculations under the input conditions provided by the overall design parameters module, in order to obtain the core physics parameters of the research reactor. These core physics parameters may include, but are not limited to, parameters such as: parametric reactivity, neutron flux distribution, power distribution, burnup, and reactivity coefficient.

[0050] Step 203: Use the obtained core physics parameters to guide the layout of irradiation targets and test pieces and the utilization of irradiation resources, and adjust the core physics design parameters with the feedback correction information to correct design constraints and requirements in order to achieve dynamic optimization of the core physics scheme.

[0051] In one exemplary instance, core physics design parameters (such as irradiation channel parameters) can be adjusted based on the average neutron flux density distribution of the core for different irradiation target structures.

[0052] In one exemplary instance, modifying design constraints and requirements to achieve dynamic optimization of the core physics scheme includes: The obtained core physical parameters are used to guide the placement of irradiated targets and test pieces and the utilization of irradiation resources; Feedback information is generated based on the functional requirements of the irradiation application system and equipment design. The core physical parameters, design constraints, and requirements were revised based on the feedback information.

[0053] In step 203, the core physics parameters obtained by the core design module are transferred to the irradiation application system and equipment design module to guide target placement and neutron spectrum utilization. Subsequently, the irradiation application system and equipment design module generates feedback information based on its functional requirements, including target geometric constraints, spectrum optimization requirements, and cooling and safety limitations, and returns this feedback information to the core design module. The core design module then modifies the core physics parameters, design constraints, and requirements based on the feedback information, thereby achieving bidirectional coupling and iterative optimization between the core design and the irradiation application system. Here, the design constraints and requirements embody the core physics scheme, which refers to the reactor core physics design scheme formed based on the overall input condition parameters and the core design calculation results. This scheme includes core configuration, fuel loading scheme, neutron flux distribution, power distribution, reactivity coefficient, burnup law, and control component placement.

[0054] In this embodiment of the application, through the bidirectional interaction and iterative optimization of steps 202 and 203, under the unified control of the overall design parameter module, the core design and irradiation application design gradually converge, thereby ensuring that the research reactor meets the basic physical safety requirements while fully supporting the needs of multifunctional applications.

[0055] Step 204: Based on the optimized core physical parameters and design constraints and requirements, perform calculations in different professional designs, and further optimize the core physical parameters and design constraints and requirements based on the calculation results.

[0056] In one exemplary instance, the optimized core physical parameters, design constraints, and requirements obtained in step 204 are used as input conditions and passed to different professional design modules. These different professional design modules may include, but are not limited to, core thermal-hydraulic design modules, reactor structure design modules, fuel assembly design modules, reactivity control system design modules, and nuclear safety and radiation protection design modules. Each module performs calculations based on the input conditions to obtain calculation results such as coolant flow rate and pressure drop, in-core component strength and seismic parameters, fuel lifetime and burnup characteristics, control component performance indicators, and source terms and radiation protection parameters. These calculation results are fed back to the core nuclear design module and the overall design parameter module to further optimize the core physical parameters, design constraints, and requirements, forming multiple iterations until the results of each professional module achieve consistency and comprehensive optimization across physics, thermal engineering, safety, and application.

[0057] In this embodiment, the cross-disciplinary dynamic coupling and extreme value convergence mechanism ensures that the overall design of the research reactor achieves global optimization in terms of multi-functional application capabilities, safety, and reliability.

[0058] In one embodiment, the core design and irradiation application optimization results can be transferred to one or any combination of the following modules: a core thermal-hydraulic design module for calculating core coolant flow rate, pressure drop, and temperature distribution; a reactor structure design module for strength and seismic calculations and verification of pressure vessels, in-core components, and irradiation channels; a fuel assembly design module for fuel element structure design, burnup analysis, and irradiation lifetime assessment; a reactivity control system design module for designing the structure and drive characteristics of control components such as control rods / control drums; and a nuclear safety and radiation protection design module for analyzing radioactive source terms, dose distribution, and shielding requirements. After each module completes its calculations, the results are fed back to the core design module and the overall design parameter module, allowing for readjustment of the core physics scheme and design inputs based on the feedback results. Multiple iterations are performed until the results from each discipline converge to meet the design constraints. This interdisciplinary iterative process ensures that the design scheme achieves comprehensive optimization across physics, thermal engineering, safety, and application.

[0059] Step 205: Systematically evaluate the optimized core physical parameters, design constraints, and requirements; compare whether the core physical parameters meet the design constraints and application requirements; store and update the core physical parameters, design constraints, and requirements that meet the evaluation criteria.

[0060] In one exemplary instance, step 205 can involve invoking the comprehensive performance evaluation module to systematically assess the iteratively optimized core physical parameters, design constraints, and requirements until the evaluation meets the standards. Evaluation indicators may include, but are not limited to, multi-functional application capabilities (target productivity, neutron beam intensity, experimental completion rate), safety (reactivity control margin, thermal margin, radiation dose constraint), reliability (system redundancy, equipment performance stability), and economy (resource utilization efficiency, operation and maintenance costs). In one embodiment, if the evaluation fails to meet the standards, it may further include: returning feedback to the overall design parameter module and the core design module to trigger further optimization.

[0061] The embodiments of this application form a closed-loop mechanism, ensuring that the final overall design of the research reactor can meet both scientific research and application tasks, as well as safety and reliability requirements.

[0062] The research reactor overall design method provided in this application achieves full-chain optimization of the research reactor overall design, from demand input to parameterization and from single-discipline calculation to multi-disciplinary collaboration, through a closed-loop mechanism of demand-driven, core-irradiation application bidirectional coupling, interdisciplinary iterative optimization, and comprehensive performance evaluation. Compared with the prior art, this invention can significantly improve the efficiency and reliability of research reactor overall design, ensuring that the design results meet both scientific research and application tasks, as well as safety and economic requirements, thereby guaranteeing the multifunctional adaptability and global optimization of the research reactor from the initial design stage.

[0063] In one exemplary instance, the research reactor overall design method provided in this application embodiment may further include any or any combination of the following steps before step 205: Step 2051: Based on the updated core physical parameters and design constraints and requirements, design the main process system and dedicated safety facilities.

[0064] In one exemplary instance, designing the main process and dedicated safety facilities may include: The main process system and equipment design module is invoked to determine the coolant loop, piping design scheme, and main process equipment schemes such as heat exchangers, pumps, and valves. The dedicated safety facility design module is invoked to determine the process flow and design scheme for dedicated safety facilities such as the safety injection system, waste heat removal system, and plant isolation system. This ensures that the research reactor can maintain cooling and safety under both normal operation and accident conditions.

[0065] Step 2051, through the design of main process equipment such as coolant system, heat exchanger, pump, and valve, as well as the design of dedicated safety facilities such as safety injection, residual heat removal, and plant isolation, realizes continuous cooling and safety protection of the research reactor under normal operation and accident conditions, thereby improving the system's accident resistance and engineering feasibility.

[0066] Step 2052: Based on the updated core physical parameters, design constraints, and requirements, design the instrumentation, control, and electrical systems and auxiliary support systems.

[0067] In one exemplary embodiment, designing the instrumentation and control and auxiliary support system may include: calling the instrumentation and control electrical system and equipment design module to design the power system, control system, monitoring and measurement scheme and safety protection scheme; and calling the auxiliary support system and equipment design module to design the secondary loop cooling water system, nuclear drainage system, ventilation and air conditioning system and radioactive waste treatment system.

[0068] Step 2052, through the design of the power, control, monitoring and measurement systems, as well as the design of auxiliary support systems such as cooling water, drainage, ventilation and air conditioning and waste treatment, has enabled the long-term stable operation of the research reactor, thereby improving operability, safety monitoring capabilities and operation and maintenance efficiency.

[0069] Step 2053: Based on the updated core physical parameters and design constraints and requirements, conduct architectural engineering design.

[0070] In one exemplary embodiment, architectural engineering design may include: invoking an architectural engineering design module to determine the overall layout of the factory building, seismic design, fire protection system, and construction drawing scheme.

[0071] Step 2053, through the design of the plant layout, seismic resistance and fire protection system, ensured the engineering safety and construction feasibility of the research reactor facility, thereby improving the integration of physical safety and engineering implementation.

[0072] Step 2054: Perform digital design based on the updated core physical parameters, design constraints, and requirements.

[0073] In one exemplary embodiment, digital design may include: invoking digital modules, building a digital management system and design analysis platform, and realizing process monitoring, data integration and operation and maintenance support for the design process.

[0074] Step 2054 establishes a digital system and design analysis platform, enabling full-process monitoring and data integration of the design process. This improves design efficiency, transparency, and operational support capabilities, providing assurance for the full lifecycle management of the research reactor.

[0075] Step 2055: Conduct experimental verification based on the updated core physical parameters, design constraints, and requirements.

[0076] In one exemplary embodiment, conducting experimental verification may include: invoking the experimental verification module, carrying out scientific research experiments, test bench design and parameter verification, and experimentally confirming key design results.

[0077] Step 2055, through testing and bench verification of key design results, confirms the reliability of the research reactor design scheme in advance, thereby reducing uncertainties in actual construction and ensuring consistency between design and actual performance.

[0078] Step 2056: Perform debugging and operation based on the updated core physical parameters, design constraints, and requirements.

[0079] In one exemplary embodiment, debugging may include: invoking the debugging module, developing a system debugging plan and operating procedures, and completing system performance verification.

[0080] Step 2056, through the design and implementation of the commissioning and operation scheme, verifies the overall performance of the research reactor system, thereby ensuring that the research reactor can be started and operated safely and stably according to the design goals, and shortening the transition period from construction to application.

[0081] Through the step-by-step implementation of the above steps, the embodiments of this application not only ensure the closed-loop process of the overall design of the research reactor from demand-driven to final evaluation, but also bring about effects such as matching, reliability, traceability, coupling, global optimization, accident resistance, operability, engineering feasibility, life cycle controllability, design verification and final comprehensive optimization at each stage, thereby significantly improving the efficiency, safety and adaptability of the overall design of the research reactor.

[0082] The research reactor overall design method provided in this application takes demand-driven approaches, combines overall design control with deep coupling between reactor core design and irradiation applications, and incorporates cross-disciplinary collaboration and iterative optimization mechanisms to ultimately form a complete research reactor overall design scheme through comprehensive performance evaluation.

[0083] This application also provides a computer-readable storage medium storing computer-executable instructions for performing the research reactor overall design method described in any of the preceding claims.

[0084] This application further provides a computer device, including a memory and a processor, wherein the memory stores the following instructions executable by the processor: steps for performing the research reactor overall design method described in any of the preceding claims.

[0085] The present application will now be described with reference to the embodiments.

[0086] The first embodiment demonstrates the core basic design process, illustrating how the methods of this application embodiment can be used to establish a core nuclear physics design scheme for a research reactor.

[0087] This embodiment uses the overall design system for the research reactor proposed in this application. By calling relevant calculation modules, it completes the core physics scheme design. The main steps include: Step 1: Call the requirements analysis module to determine the main application areas and task requirements of the research reactor, providing clear objectives and boundary conditions for subsequent design.

[0088] Step Two: Call the overall design parameter module to determine the overall technical requirements of the research reactor and further clarify the design inputs and objectives for the reactor core design. Overall technical requirements may include, but are not limited to, power levels, fuel type, geometrical boundaries, neutron flux targets, and safety margin requirements.

[0089] Step 3: Invoke the core design module. Based on the overall technical requirements and design objectives of the research reactor, and using the input condition parameters, invoke the core physics calculation program to conduct conceptual design and preliminary calculation analysis of the core physics scheme. This will yield the core physical characteristic parameters of the research reactor, including but not limited to: reactivity, neutron flux distribution, power distribution, reactivity coefficient, burnup, control rod value, and core fuel management scheme.

[0090] Step 4: The calculation results of the core design are sequentially provided to the core thermal-hydraulic design module, reactor structure design module, fuel assembly design module, and reactivity control system design module, according to the requirements of the relevant design modules. Each module performs calculations and analyses based on the core design results to determine the core coolant flow rate and pressure drop, the strength and seismic parameters of the in-core components, the fuel assembly structure and burnup characteristics, and the structure and drive characteristics of the control components. The calculation results of each module are then fed back to the core design module for revising the physical scheme, thereby achieving coupled iterative calculations between multiple disciplines.

[0091] Step 5: Based on the conceptual design and preliminary calculation results of the physical scheme, conduct detailed physical scheme design and calculation analysis, including critical calculation, power distribution calculation, fuel consumption analysis, etc., and continue to interact and iteratively optimize with relevant design modules until a physical design scheme that meets the design and optimization requirements is obtained.

[0092] Step 6: Transfer the parameters determined by the detailed core design to the overall design parameter module and store them in the overall design parameter database for other relevant design modules to call, so as to achieve unified management and traceability of parameters.

[0093] The first embodiment demonstrates how the embodiments of this application complete the step-by-step design and optimization of the core physics scheme under demand-driven and overall parameter control; through interdisciplinary iterative calculations, the core design is dynamically coupled with disciplines such as thermal, structural, fuel, and control, ultimately obtaining a scientifically reasonable core physics scheme that meets the constraints.

[0094] The second embodiment shows the specific functional application design process, and explains how the method of the embodiment of the present application calls different modules to form a targeted design solution under specific application requirements (isotope preparation).

[0095] This embodiment adopts the overall design method of the research reactor proposed by the present invention, and completes the design of the radioactive isotope production system plan of the research reactor by calling relevant calculation modules. Its main steps include: Step 1: Call the requirement analysis module to determine the functional requirements for the production of radioactive isotopes by the research reactor, including the types of isotopes planned to be produced and their main uses, so as to provide application goals for the core nuclear design and system design.

[0096] Step 2: Call the overall design parameter module to determine the overall technical requirements for the production of radioactive isotopes by the research reactor. The overall technical requirements may include parameters such as target production capacity, neutron flux level, energy spectrum distribution, safety margin, and cooling conditions.

[0097] Step 3: Call the core nuclear design module to carry out the core nuclear design for the production requirements of radioactive isotopes. The core nuclear design ensures that the neutron flux index requirements for isotope irradiation are met, further determines the irradiation positions of radioactive isotope targets and the neutron energy spectrum distribution, and optimizes the physical design of the targets.

[0098] Step 4: Call the core thermal-hydraulic design module to carry out the thermal-hydraulic design of the radioactive isotope irradiation target. By calculating parameters such as coolant flow rate, temperature distribution, and pressure drop, ensure that the thermal-hydraulic design of the target can meet the requirements of safety analysis, and further optimize the design.

[0099] Step 5: Call the reactor structure design module to carry out the structure design of the radioactive isotope irradiation channels and targets. This step includes determining the channel geometry, material selection, and structural strength, and optimizing the obtained design to ensure structural safety and long-term operation reliability.

[0100] Step 6: Call the auxiliary support system and equipment design module to carry out the design of production facilities supporting radioactive isotope irradiation production. The auxiliary facilities may include a secondary loop cooling system, a nuclear drain system, and a radioactive waste treatment system, etc.

[0101] Step 7: Call the nuclear safety and radiation protection design module to analyze the source term of radioactive isotope irradiation production, determine the radiation dose distribution, shielding, and environmental impacts, etc., to ensure that the production process meets nuclear safety standards.

[0102] Step 8: Call the irradiation application system and equipment design module to carry out the design of the radioactive isotope preparation system and equipment, including the irradiation process flow, preparation equipment layout and operation plan.

[0103] Step Nine: Utilize the architectural engineering design module to develop the architectural design scheme for the radioactive isotope preparation system and factory building. This design includes the overall layout, factory structure, seismic design, fire protection system, and construction drawings.

[0104] Step 10: Call the debugging and operation module to design and analyze the debugging and operation plan of the radioactive isotope preparation system, including the debugging process, system performance verification and operation procedures.

[0105] Step 11: Call the comprehensive performance evaluation module to perform a comprehensive performance evaluation of the designed radioactive isotope preparation system. Evaluation indicators include, but are not limited to, isotope production capacity, neutron utilization efficiency, safety, and reliability.

[0106] Step 12: Transfer the parameters determined by the design of the radioisotope preparation system to the overall design parameter module and store them in the overall design parameter database of the research reactor for subsequent retrieval and traceability.

[0107] The second embodiment demonstrates how the capabilities of this application, within the framework of the overall design methodology, complete the entire chain of solution design for specific application needs (isotope preparation), including requirements analysis, core design, thermal-hydraulic design, structural design, safety design, system and facility design, commissioning, and performance evaluation. This ensures that the research reactor achieves efficient isotope preparation while meeting nuclear safety requirements.

[0108] Although the embodiments disclosed in this application are as described above, the content described is merely for the purpose of understanding this application and is not intended to limit this application. Any person skilled in the art to which this application pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this application; however, the scope of patent protection of this application shall still be determined by the scope defined in the appended claims.

Claims

1. A research reactor overall design system, characterized in that, include: The module includes modules for requirements analysis, overall design parameters, core design, core thermal-hydraulic design, reactor structure design, irradiation application system and equipment design, different professional design modules, and comprehensive performance evaluation. The requirements analysis module is used to analyze the multi-functional application requirements of the research reactor and generate input parameters and constraints for the overall design of the research reactor. The overall design parameter module is used to convert the input parameters and constraints of the generated research reactor overall design into overall design parameters and store them according to the pre-set correspondence. The core design module is used to perform neutron physics calculations based on overall input condition parameters in order to obtain the core physics parameters of the research reactor. The core thermal-hydraulic design module is used to calculate thermal-hydraulic parameters, including core coolant flow rate, pressure drop, and temperature distribution, based on the obtained core physical parameters. The reactor structure design module is used to perform strength and seismic calculations and verifications of the pressure vessel, in-core components, and irradiation ducts based on the obtained core physical parameters and the calculation results of the core thermal-hydraulic design module. The irradiation application system and equipment design module is used to guide the layout of irradiation targets and test pieces and the utilization of irradiation resources using the obtained core physical parameters, and to adjust the core physical parameters with the feedback correction information in order to correct design constraints and requirements to achieve dynamic optimization of the core irradiation scheme. Different professional design modules are used to perform calculations in different professional designs based on the optimized core physical parameters, design constraints and requirements, and to further optimize the core physical parameters, design constraints and requirements based on the calculation results; The comprehensive performance evaluation module is used to systematically evaluate the optimized core physical parameters, design constraints, and requirements, and to store and update the core physical parameters, design constraints, and requirements that meet the evaluation criteria.

2. The overall design system for the research reactor according to claim 1, wherein, The different professional design modules include: The fuel assembly design module is used for fuel element and fuel assembly structural design, fuel consumption analysis, and irradiation life assessment. The reactive control system design module is used to design the structure and drive characteristics of control components; The nuclear safety and radiation protection design module is used to analyze radioactive source terms, dose distribution, and shielding requirements.

3. The research reactor overall design system according to claim 2, wherein the different professional design modules further include one or any combination of the following: The main process system and equipment design module is used to determine the design schemes for coolant circuits, pipelines, and main process equipment such as heat exchangers, pumps, and valves based on the updated core physical parameters, design constraints, and requirements. A dedicated safety facility design module is provided to determine the process flow and design scheme of dedicated safety facilities such as the safety injection system, waste heat removal system, and reactor building isolation system based on the updated core physical parameters, design constraints, and requirements. The instrumentation, control, and electrical system and equipment design module is used to design power systems, control systems, monitoring and measurement schemes, and safety protection schemes based on the updated core physical parameters, design constraints, and requirements. The auxiliary support system and equipment design module is used to design the secondary cooling water system, nuclear drainage system, ventilation and air conditioning system and radioactive waste treatment system based on the updated core physical parameters, design constraints and requirements. The building engineering design module is used to determine the overall layout of the factory, seismic design, fire protection system and construction drawing scheme based on the updated core physical parameters and design constraints and requirements. The digital module is used to build a digital management system and design analysis platform based on updated core physical parameters, design constraints and requirements, so as to realize process monitoring, data integration and operation and maintenance support in the design process; The test verification module is used to conduct research reactor scientific tests, test bench design and parameter verification based on the updated core physical parameters, design constraints and requirements, and to experimentally confirm key design results. The debugging and operation module is used to develop system debugging plans and operating procedures based on the updated core physical parameters, design constraints and requirements, and to complete system performance verification.

4. A research reactor overall design method, characterized in that, include: The multi-functional application requirements of the research reactor are analyzed to generate input parameters and constraints for the overall design of the research reactor. Based on the pre-set correspondence, the input parameters and constraints of the generated overall design of the research reactor are converted into overall input condition parameters and stored. Neutron physics calculations are performed based on the overall input condition parameters to obtain the core physical parameters of the research reactor. The obtained core physical parameters are used to guide the layout of irradiated targets and test pieces and the utilization of irradiation resources. The feedback correction information is used to adjust the core physics design parameters to correct design constraints and requirements in order to achieve dynamic optimization of the core physics scheme. Based on the optimized core physical parameters and design constraints and requirements, calculations are performed in different professional designs, and the core physical parameters and design constraints and requirements are further optimized based on the calculation results. The optimized core physical parameters, design constraints, and requirements are systematically evaluated. The evaluation is compared to see if the core physical parameters meet the design constraints and application requirements. The evaluation results are stored and updated.

5. The research reactor overall design method according to claim 4, before conducting a systematic evaluation of the optimized core physical parameters and design constraints and requirements, further includes one or any combination of the following: Based on the updated core physical parameters, design constraints, and requirements, the main process system and dedicated safety facilities are designed. Based on the updated core physical parameters, design constraints, and requirements, design the instrumentation, control, and electrical systems and auxiliary support systems. Based on the updated core physical parameters, design constraints, and requirements, architectural engineering design will be carried out; Based on the updated core physical parameters, design constraints, and requirements, digital design is performed; Based on the updated core physical parameters, design constraints, and requirements, experimental verification will be conducted; Based on the updated core physical parameters, design constraints, and requirements, debugging and operation were carried out.

6. The overall design method for a research reactor according to claim 4 or 5, wherein, The calculations performed in different professional designs include: Calculate the thermal-hydraulic parameters such as core coolant flow rate, pressure drop, and temperature distribution; Perform strength and seismic calculations and verifications for pressure vessels, in-core components, and irradiation ducts; Perform fuel element structural design, fuel consumption analysis, and irradiation life assessment; Design the structure and driving characteristics of the control components; Analyze the radioactive source term, dose distribution, and shielding requirements.

7. The overall design method for a research reactor according to claim 4 or 5, wherein, The research reactor has multiple applications including: nuclear fuel and material irradiation experiments, isotope preparation, neutron beam experiments, and related scientific research experiments.

8. The overall design method for a research reactor according to claim 4 or 5, wherein, The modification of design constraints and requirements to achieve dynamic optimization of the core physics scheme includes: The obtained core physical parameters are used to guide the placement of irradiated targets and test pieces and the utilization of irradiation resources; Feedback information is generated based on the functional requirements of the irradiation application system and equipment design. The core physical parameters, design constraints, and requirements were revised based on the feedback information.

9. A computer-readable storage medium storing computer-executable instructions for performing the overall design method of the research reactor according to any one of claims 1-8.

10. A computer device comprising a memory and a processor, wherein, The memory stores the following instructions that can be executed by a processor: steps for performing the overall design method of the research reactor as described in any one of claims 1-8.

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