A rapid customized design platform and method for the seawater cooling water system of a nuclear power unit

Abstract

The present invention relates to a rapid customized design platform and method for the seawater cooling water system of a nuclear power unit. By using the rapid customized design platform and method for the seawater cooling water system of a nuclear power unit provided by the present invention, through the use of the product family module, main process plan generation module, equipment parameter optimization module, and safety redundancy analysis module set in the platform, the degree of automation of the design process can be improved, and the optimal plan can be quickly obtained through a multi-objective optimization algorithm. By using the rapid customized design platform and method for the seawater cooling water system of a nuclear power unit provided by the present invention, designers can quickly get started with the design. In the case of numerous system design parameters and complex and changeable working conditions, they can quickly respond to the design in a new project, make adaptive modifications to the nuclear power unit system according to different factors, and thus achieve the rapid customized design of the seawater cooling water system of the nuclear power unit.

Description

Technical Field

[0001] The invention belongs to the field of the design of the seawater cooling water system of nuclear power units, and relates to a rapid customized design platform and method for the seawater cooling water system of nuclear power units. Background Art

[0002] A nuclear power plant refers to a facility that uses a nuclear reactor to convert nuclear energy into electrical energy. The design and construction of nuclear power plants are gradually developing in the direction of rapid customized design. There are many systems in a pressurized water reactor nuclear power unit, and the seawater cooling water system mainly includes the important service water system and the circulating water system, and the system structures are relatively similar.

[0003] The seawater cooling water system is respectively adaptively designed and calculated and modified by experienced designers according to regional characteristics, plant area planning, site characteristics, and combined with the design experience of previous similar projects. However, the traditional design method has the following problems: First, the degree of automation in the design process is low, and the design is mostly carried out by manual calculation, but it is difficult to perform multi-objective optimization by manual calculation, so it is difficult to obtain the optimal solution. Second, due to the complex design processes of each system and the very different natural and social environments of different sites, engineers need to adaptively modify the nuclear power unit system according to different factors, so it is difficult for designers to quickly respond to the design in new projects. Third, there are many design parameters for each system, the working conditions are complex and changeable, and the professionalism is strong. It takes a long time to train experienced engineers, and designers cannot quickly start the design.

[0004] To solve the above problems, the inventor has developed a rapid customized design platform and method for the seawater cooling water system of nuclear power units. Summary of the Invention

[0005] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide a rapid customized design platform and method for the seawater cooling water system of nuclear power units, which can quickly respond to the customized design of pressurized water reactor nuclear power units under different site conditions, design requirements, etc.

[0006] To achieve this purpose, the present invention provides a rapid customized design platform for the seawater cooling water system of nuclear power units, including: a product family module, a main process plan generation module, an equipment parameter optimization module, and a safety redundancy analysis module;

[0007] The product family module is built in the platform. If a product family template of the system to be designed is selected in the product family module on the platform interface, a function of the system to be designed and a corresponding equipment module are generated;

[0008] After key technical parameters, cost parameters, and general layout information are input into the main process plan generation module, the platform forms a main process plan of the system;

[0009] The device parameter optimization module is the device parameter selection and optimization module, which optimizes the parameters of key devices in the main process plan of the system;

[0010] The safety redundancy analysis module analyzes the impact of the blockage on the operation of the filter screen and provides suggestions on whether redundant measures need to be set.

[0011] Furthermore, the product family template is established based on the requirements and configurations of existing engineering projects, and is determined according to the functions to be executed by the corresponding system of the product family template, the devices and structures corresponding to the functions;

[0012] Each of the product family templates embeds the devices and structures required for the corresponding system to execute various functions.

[0013] Furthermore, the main process plan of the system includes the main process equipment and structure plan of the system and the main process plan flow chart of the system;

[0014] If the product family of the system to be designed is selected in the main process plan generation module, the function of the system to be designed and the corresponding device module will appear; if the key technical parameters and cost parameters are input in the relevant parameter table of the function of the system to be designed and the corresponding device module, the platform will form the main process equipment and structure plan of the system in combination with the principles of technical feasibility and lowest cost;

[0015] According to the main process equipment and structure plan of the system and in combination with the general layout information, the platform generates the main process plan flow chart of the system.

[0016] Furthermore, the general layout information mainly includes:

[0017] (1) Pipeline routing, layout positions and elevations of equipment and structures;

[0018] (2) Location of fine grille, drum filter screen, shellfish trap, heat exchanger, overflow weir.

[0019] Furthermore, after the constraint parameters and cost parameters of the key devices are input into the device parameter optimization module, the platform forms a series of device parameter optimization plans according to the set value ranges and forms the final recommended plan through a multi-objective optimization algorithm.

[0020] Furthermore, the constraint parameters include: minimum flow rate, lowest tide level, highest tide level, operating tide level;

[0021] The cost parameters include: equipment cost, construction cost and operating cost.

[0022] Further, for different types and quantities of blockages at different plant sites, under different flow rate and tide level conditions, the safety redundancy analysis module analyzes the changes in the flow rate through the filter and the pressure difference over time through the built-in safety redundancy intelligent decision-making model and its learning algorithm, and based on this result and the pump-related parameters obtained by the equipment parameter optimization module, obtains suggestions on whether redundant measures need to be set.

[0023] The present invention also provides a rapid customized design method for the seawater cooling water system of a nuclear power unit. The method is implemented based on the rapid customized design platform for the seawater cooling water system of the nuclear power unit, and includes the following steps:

[0024] S1. Establish a product family template: Establish a product family template for the pressurized water reactor seawater cooling water system, and build the product family template into the product family module of the platform;

[0025] S2. Select a product family: Select the product family template of the system to be designed in the product family module on the platform interface, and the functions of the system to be designed and the corresponding equipment modules are generated;

[0026] S3. Generate a main process plan: Input key technical parameters and cost parameters to form a plan for the main process equipment and structures of the system; upload general layout information to generate a flow chart of the main process plan of the system;

[0027] S4. Optimize equipment parameters: After inputting the constraint parameters and cost parameters of the key equipment into the equipment parameter optimization module, the platform forms a series of equipment parameter optimization plans according to the set value range, and forms a final recommended plan through a multi-objective optimization algorithm;

[0028] S5. Safety redundancy analysis: The safety redundancy analysis module of the platform analyzes the changes in the flow rate through the filter and the pressure difference over time under the action of blockages through the built-in safety redundancy intelligent decision-making model, and combines the pump-related parameters obtained by the equipment parameter optimization module to obtain suggestions on whether redundant measures need to be set.

[0029] Further, the operation method for generating the main process plan in step S3 includes the following steps:

[0030] S31. Select the product family of the system to be designed in the main process plan generation module, and the functions of the system to be designed and the corresponding equipment modules appear;

[0031] S32. Input the key technical parameters and cost parameters in the relevant parameter table of the functions of the system to be designed and the corresponding equipment modules. The platform selects the equipment type through comparison based on the principles of technical feasibility and the lowest cost, and calculates the parameters of the equipment and structures to form the plan for the main process equipment and structures of the system;

[0032] S33. Upload the general layout information in the main process plan generation module, and the platform generates the system main process plan flow chart.

[0033] Furthermore, the operation method for optimizing equipment parameters in step S4 includes the following steps:

[0034] S41. Click on the pump and pipeline module in the system main process plan flow chart, and an optimization calculation parameter input box appears;

[0035] S42. Fill in the following information in the optimization calculation parameter input box: 1) typical tide levels and tide frequencies, 2) minimum flow rate, flow rate range, maximum power, pipe diameter range, 3) unit price of plant electricity, unit cost of pump and motor, 4) calculation parameters for local water loss coefficient;

[0036] S43. Combining the parameters input in step S3, based on the pump operation cost formula, pump equipment cost formula, pipeline civil engineering cost formula, pipeline equipment cost, local water loss formula, and frictional water loss formula embedded in the platform, through a multi-objective optimization algorithm, obtain the rated flow rate, head, and optimal pipe diameter of the pump.

[0037] Furthermore, the method for performing the safety redundancy analysis in step S5 includes the following steps:

[0038] S51. Input the following information in the safety redundancy analysis module of the platform: types of typical blockages at the plant site, amount of blockages coming in, design flow rate, tide level, aperture of the filter mesh;

[0039] S52. Through the operation of the safety redundancy intelligent decision-making model, obtain the variation of the flow rate through the filter and the pressure difference with time after the blockage arrives;

[0040] S53. Combining the pump-related parameters obtained from the equipment parameter optimization module, recommend whether to set up safety redundancy facilities, that is, whether to set up bypass channels before and after the filter.

[0041] The beneficial effects of the present invention are as follows. By using the rapid customization design platform and method for the seawater cooling water system of nuclear power units provided by the present invention, through the use of the product family module, main process plan generation module, equipment parameter optimization module, and safety redundancy analysis module set in the platform, the degree of automation in the design process can be improved, and the optimal solution can be quickly obtained through a multi-objective optimization algorithm. By using the rapid customization design platform and method for the seawater cooling water system of nuclear power units provided by the present invention, designers can quickly get started with the design. In the case of numerous system design parameters and complex and changeable operating conditions, they can quickly respond to the design in a new project, make adaptive modifications to the nuclear power unit system according to different factors, and thus achieve the rapid customization design of the seawater cooling water system of nuclear power units. Description of the Drawings

[0042] Figure 1 Schematic flow diagram of a rapid customized design method for the seawater cooling water system of a nuclear power unit provided by the present invention. Specific implementation manners

[0043] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the technical solutions in the embodiments of the present invention will be further clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. It should be understood that the specific implementation manners described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] A rapid customized design platform for the seawater cooling water system of a nuclear power unit provided by an embodiment of the present invention. The platform mainly includes four modules: a product family module, a main process plan generation module, an equipment parameter optimization module, and a safety redundancy analysis module. The specific contents and design methods of the above modules are as follows:

[0045] 1. Product family module

[0046] The product family module is built into the platform, and the product family template is embedded in the product family module; the product family templates of each system in the product family module can be called on the platform interface. The product family templates of each system are established based on the requirements and configurations of existing engineering projects, and are determined according to the functions to be performed by each system and the equipment / structures corresponding to the functions. For example, the functions of the seawater cooling water system include: transporting the cooling medium, providing power, filtering, and heat exchange.

[0047] Under each corresponding function in the product family template of the seawater cooling water system, the equipment / structures required to perform this function are embedded. Among them, the equipment / structures embedded under the function of transporting the cooling medium include: intake tunnel, pipeline, siphon well, overflow weir; the equipment embedded under the function of providing power includes: pump; the equipment embedded under the function of filtering includes: coarse grid, fine grid, trash rack, filter screen, shellfish trap, automatic backwash filter; the equipment embedded under the function of heat exchange includes: cooling tower, heat exchanger. Key technical parameters and cost parameters are set under each piece of equipment / structure.

[0048] When designing, first select the product family template of the system to be designed in the product family module on the platform interface, and then the function of the system to be designed and the corresponding equipment module are generated.

[0049] 2. Main process plan generation module

[0050] The main process plan includes the system main process equipment and structure plan, and the system main process plan flow chart.

[0051] When designing, select the product family of the system to be designed in the main process plan generation module, then the functions of the system to be designed and the corresponding equipment modules will appear, and the relevant parameter tables of the functions of the system to be designed and the corresponding equipment modules will be displayed on the plan display interface. If key technical parameters and cost parameters are input in the relevant parameter tables of the functions of the system to be designed and the corresponding equipment modules, the platform will form the main process equipment and structure plan of the system by combining the principles of technical feasibility and lowest cost.

[0052] Input the general layout information in the functions of the system to be designed and the corresponding equipment modules. The general layout information includes: 1) Pipeline routing, equipment / structure layout position and elevation; 2) Fine grille, drum strainer, shellfish trap, heat exchanger, overflow weir positioning. According to the main process equipment and structure plan of the system and combining the general layout information, the platform generates the main process plan flow chart of the system.

[0053] 3. Equipment Parameter Optimization Module

[0054] The equipment parameter optimization module is an equipment parameter selection and optimization module. In this module, the parameters of key equipment in the main process plan of the system generated by the main process plan generation module need to be optimized. After inputting the constraint parameters and cost parameters of the corresponding equipment in the platform equipment parameter optimization module and confirming, the platform internally forms a series of equipment parameter optimization plans according to the set value range, and forms the final recommended plan through the multi-objective optimization algorithm.

[0055] Among them, the constraint parameters include: minimum flow rate, lowest / highest tide level, operating tide level and other parameters. The cost parameters include: equipment cost, construction cost and operating cost, etc.

[0056] 4. Safety Redundancy Analysis Module

[0057] For the seawater cooling water system, the most important safety analysis is the intake safety analysis. Among them, the blockage is one of the factors that have the greatest impact on the intake safety. Therefore, the safety redundancy analysis module is an analysis of the impact of blockage on the operation of the strainer.

[0058] The platform safety redundancy analysis module, through the built-in safety redundancy intelligent decision-making model and its learning algorithm, analyzes the change of the flow rate and pressure difference of the strainer over time under different blockage types, incoming quantities, at different flow rates and tide levels for different plant sites, and based on this result and the pump-related parameters obtained from the equipment parameter optimization module, can obtain whether redundant measures need to be set, that is, the suggestion of whether to set a bypass flow channel.

[0059] In this embodiment, a rapid customized design method for the seawater cooling water system of a nuclear power unit is also provided, which is realized through the rapid customized design platform for the seawater cooling water system of the nuclear power unit. As Figure 1As shown in the figure, a rapid customization design method for the seawater cooling water system of a nuclear power unit provided by this embodiment includes the following steps: First, establish a product family template for the pressurized water reactor seawater cooling water system, and embed the product family template into the product family module of the platform; when designing, the designer first selects the product family of the system to be designed on the interface of the main process plan generation module, and combines the characteristics of the existing plant site to adaptively modify the product family plan to form the main process plan of the system; then optimize the parameters of the equipment through the algorithm embedded in the platform equipment parameter optimization module; finally, through the analysis of the system optimization plan by the safety redundancy analysis module, conduct the system water intake safety analysis and redundancy design suggestions.

[0060] The following takes the rapid customization design of the important service water system of a certain nuclear power plant as an example to specifically introduce the specific implementation method of the customization design relying on the rapid customization design platform for the seawater cooling water system of the nuclear power unit. The engineering project of this embodiment is a coastal nuclear power plant, and the important service water system is a once-through water intake method. The flow schematic diagram of this embodiment is as Figure 1 shown, and specifically includes the following steps:

[0061] S1. Establish a product family template for the important service water system;

[0062] Constructing the product family template is the first step of the rapid customization design method for the seawater cooling water system of the nuclear power unit. In step S1 of this embodiment, establish a product family template for the important service water system, and embed the product family template of the important service water system into the product family module of the platform. The product family template of the important service water system is embedded with the equipment and structures required for the important service water system to perform various functions.

[0063] When designing, select the product family template of the important service water system in the product family module on the platform interface, and the functions of the important service water system and the corresponding equipment modules will be generated. The functions of the important service water system include: transporting the cooling medium, providing power, filtering, and heat exchange. Under each of the above functions of the important service water system, the key equipment / structures required to perform various functions, as well as the technical parameters and cost parameters of the key equipment / structures, are shown in Table 1 for details.

[0064] Table 1 Functions of the important service water system and key equipment / structures

[0065]

[0066]

[0067]

[0068] S2. Generate the main process plan of the important service water system;

[0069] S2.1 Generate the main process equipment / structures plan for the important plant service water system

[0070] During the design, when the important plant service water system is selected in the product family selection box on the interface of the main process plan generation module of the platform, the functions of the important plant service water system and the corresponding equipment modules will appear, and the functions of the important plant service water system, the equipment / structures corresponding to the functions, and the relevant parameter tables will be displayed on the platform plan display interface, as shown in Table 1; select and fill in the relevant technical parameters and cost parameters in Table 1 to obtain the system function, the equipment / structures corresponding to the function, and the relevant parameter filling table as shown in Table 2.

[0071] Table 2 System function, equipment / structures corresponding to the function, and relevant parameter filling table

[0072]

[0073]

[0074] According to the technical parameters and cost parameters filled in Table 2, combined with the principles of technical feasibility and the lowest cost, the platform has selected the equipment type and calculated the equipment / structure parameters, and the formed main process equipment / structures plan table of the system is shown in Table 3.

[0075] Table 3 Main process equipment / structures plan table of the system

[0076]

[0077] S2.2 Generate the main process plan flow chart of the system

[0078] Upload the general layout information of the plant site in the main process plan generation module of the platform, mainly including: 1) Pipeline routing, equipment / structure layout position and elevation; 2) Fine grille, drum screen, shellfish trap, heat exchanger, overflow weir positioning. According to the above general layout information, the platform generates the main process plan flow chart of the important plant service water system.

[0079] S3. Optimize equipment parameters

[0080] After generating the main process plan of the system, use the equipment parameter optimization module to optimize the pump rated flow, head, and pipe diameter parameters. After inputting the constraint parameters and cost parameters of the corresponding equipment in the platform equipment parameter optimization module and confirming, the platform internally forms a series of equipment parameter optimization plans according to the set value range, and forms the final recommended plan through the multi-objective optimization algorithm.

[0081] In this embodiment, the specific operation method is as follows: Click on the pump and pipeline modules in the main process flow chart of the important plant water system, and an input box for optimization calculation parameters will appear. Fill in the following information in the input box for optimization calculation parameters: 1) Typical tide levels and tide frequencies; 2) Minimum flow rate, flow rate range, maximum power, pipe diameter range; 3) Unit price of plant electricity, unit cost of pump and motor power; 4) Calculation parameters for local water loss coefficient. Then, combining the parameters already input when calculating equipment costs and civil engineering costs in Table 2 in step S2.1: 1) Unit price of pipeline, unit price of earthwork; 2) Pipeline wall thickness; Based on the pump operation cost formula, pump equipment cost formula, pipeline civil engineering cost formula, pipeline equipment cost, local water loss formula, and frictional water loss formula embedded in the platform, through a multi-objective optimization algorithm, the rated flow rate Q of the pump is obtained. 泵额定 and the head H 泵额定 , the optimal pipe diameter d 管道最优 .

[0082] S4. Conduct safety redundancy analysis.

[0083] After completing the optimization of equipment parameters in step S3, conduct safety redundancy analysis on the system.

[0084] The platform safety redundancy analysis module, through the built-in safety redundancy intelligent decision-making model and its learning algorithm, analyzes the types and quantities of blockages at different plant sites, and under different flow rate and tide level conditions, analyzes the changes in the flow rate through the filter and the pressure difference over time. And based on this result and the pump-related parameters obtained by the equipment parameter optimization module, it can obtain whether redundant measures need to be set, that is, a suggestion on whether to set a bypass channel. Input the following information into the platform's safety redundancy analysis module: 1) Types of typical blockages at this plant site; 2) Quantity of blockages; 3) Design flow rate; 4) Tide level; 5) Mesh aperture of the drum filter. Through the operation of the safety redundancy intelligent decision-making model (machine learning algorithm), the flow rate through the drum filter and the pressure difference after the blockage arrives are obtained: After the system operates for t time, the pressure difference of the drum filter reaches p MPa and continues to rise. According to this operation result, the platform recommends setting safety redundancy facilities, that is, setting bypass channels before and after the drum filter. When the alarm pressure difference p MPa is reached, the bypass channel is opened.

[0085] Obviously, the method described in the present invention is not limited to the embodiments described in the specific implementation manners. Those skilled in the art can obtain other implementation methods based on the technical solution of the present invention, which also belong to the scope of the technical innovation of the present invention. Those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and its equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A rapid customized design platform for the seawater cooling water system of a nuclear power unit, characterized in that, it includes: a product family module, a main process plan generation module, an equipment parameter optimization module, and a safety redundancy analysis module; The product family module is built into the platform. If a product family template of the system to be designed is selected in the product family module on the platform interface, the functions of the system to be designed and the corresponding equipment modules will be generated; After inputting key technical parameters, cost parameters, and general layout information into the main process plan generation module, the platform forms the main process plan of the system; The general layout information includes at least: (1) Pipeline routing, layout positions and elevations of equipment and structures; (2) Positioning of fine screens, drum filters, shellfish traps, heat exchangers, and overflow weirs; The equipment parameter optimization module is an equipment parameter selection and optimization module, which optimizes the parameters of key equipment in the main process plan of the system; After inputting the constraint parameters and cost parameters of the key equipment into the equipment parameter optimization module, the platform forms a series of equipment parameter optimization plans according to the set value range, and forms the final recommended plan through a multi-objective optimization algorithm; the constraint parameters include: minimum flow rate, lowest tide level, highest tide level, and operating tide level; the cost parameters include: equipment cost, construction cost, and operating cost; The safety redundancy analysis module analyzes the impact of blockages on the operation of the filter and provides suggestions on whether redundant measures need to be set.

2. The rapid customized design platform for the seawater cooling water system of a nuclear power unit according to claim 1, characterized in that, The product family template is established based on the requirements and configurations of existing engineering projects, and is determined according to the functions to be performed by the corresponding system of the product family template, the equipment and structures corresponding to the functions; Each product family template embeds the equipment and structures required for the corresponding system to perform various functions.

3. The rapid customized design platform for the seawater cooling water system of a nuclear power unit according to claim 2, characterized in that, The main process plan of the system includes the main process equipment and structure plan of the system and the main process plan flow chart of the system; If the product family of the system to be designed is selected in the main process plan generation module, the functions of the system to be designed and the corresponding equipment modules will appear; if the key technical parameters and cost parameters are input into the relevant parameter table of the functions of the system to be designed and the corresponding equipment modules, the platform will form the main process equipment and structure plan of the system in combination with the principles of technical feasibility and lowest cost; According to the main process equipment and structure plan of the system, combined with the general layout information, the platform generates the main process plan flow chart of the system.

4. The rapid customized design platform for the seawater cooling water system of a nuclear power unit according to claim 1, characterized in that, The safety redundancy analysis module analyzes the change of the flow rate and pressure difference of the filter with time under different blockage types and incoming quantities at different plant sites, under different flow rate and tide level conditions, through the built-in safety redundancy intelligent decision-making model and its learning algorithm, and obtains suggestions on whether redundant measures need to be set according to the analysis results in combination with the pump-related parameters obtained by the equipment parameter optimization module.

5. A rapid customized design method for the seawater cooling water system of a nuclear power unit, which is implemented based on the rapid customized design platform for the seawater cooling water system of a nuclear power unit described in any one of claims 1-4. Characterized in that: The method comprises the following steps: S1. Establish a product family template: Establish a product family template for the pressurized water reactor seawater cooling water system, and embed the product family template into the product family module of the platform; S2. Select a product family: Select the product family template of the system to be designed in the product family module on the platform interface, and the functions of the system to be designed and the corresponding equipment modules are generated; S3. Generate the main process plan: Input key technical parameters and cost parameters to form the main process equipment and structure plan of the system; Upload the general layout information and generate the main process plan flow chart of the system; S4. Optimize equipment parameters: After inputting the constraint parameters and cost parameters of the key equipment into the equipment parameter optimization module, the platform forms a series of equipment parameter optimization plans according to the set value range, and forms the final recommended plan through a multi-objective optimization algorithm; S5. Safety redundancy analysis: The safety redundancy analysis module of the platform analyzes the change of the flow rate and pressure difference of the filter screen with time under the action of the blockage through the built-in safety redundancy intelligent decision-making model, and combines the pump-related parameters obtained by the equipment parameter optimization module to obtain a suggestion on whether redundant measures need to be set.

6. A rapid customized design method for the seawater cooling water system of a nuclear power unit according to claim 5, Characterized in that: The operation method for generating the main process plan in step S3 comprises the following steps: S31. Select the product family of the system to be designed in the main process plan generation module, and the functions of the system to be designed and the corresponding equipment modules appear; S32. Input the key technical parameters and cost parameters in the relevant parameter table of the functions of the system to be designed and the corresponding equipment modules. The platform compares and selects the equipment type according to the principles of technical feasibility and minimum cost, and calculates the equipment and structure parameters to form the main process equipment and structure plan of the system; S33. Upload the general layout information in the main process plan generation module, and the platform generates the main process plan flow chart of the system.

7. A rapid customized design method for the seawater cooling water system of a nuclear power unit according to claim 5, Characterized in that: The operation process for optimizing equipment parameters in step S4 comprises the following steps: S41. Click on the pump and pipeline modules in the main process plan flow chart of the system, and an optimization calculation parameter input box appears; S42. Fill in the following information in the optimization calculation parameter input box: 1) Typical tide levels and tide frequencies, 2) Minimum flow rate, flow rate range, maximum power, pipe diameter range, 3) Unit price of plant electricity, unit cost of pump and motor power, 4) Calculation parameters of local water loss coefficient; S43. Combining the parameters input in step S3, based on the pump operation cost formula, pump equipment cost formula, pipeline civil engineering cost formula, pipeline equipment cost, local water loss formula, and frictional water loss formula embedded in the platform, through a multi-objective optimization algorithm, obtain the rated flow rate, head, and optimal pipe diameter of the pump.

8. A rapid customized design method for the seawater cooling water system of a nuclear power unit according to claim 5, characterized in that, the method for performing the safety redundancy analysis in the step S5 includes the following steps: S51. Input the following information into the safety redundancy analysis module of the platform: types of typical blockages at different plant sites, blockage inflow, design flow rate, tide level, and aperture of the filter mesh; S52. Through the operation of the safety redundancy intelligent decision-making model, obtain the variation of the flow rate and pressure difference of the filter with time after the blockage arrives; S53. Combine the pump-related parameters obtained by the equipment parameter optimization module to recommend whether to set up safety redundancy facilities, that is, whether to set up bypass channels before and after the filter.

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