A method for preparing a high-temperature lead-bismuth liquid alloy valve

Abstract

This invention discloses a method for manufacturing a high-temperature lead-bismuth liquid alloy valve, belonging to the field of special valve manufacturing technology. The method first constructs a parts library equipped with real-time detection equipment and simultaneously establishes an initial three-dimensional parts model database linked to the detection data. Then, based on valve process requirements, it retrieves valve assembly data and completes assembly constraint verification, automatically generating a three-dimensional target model and assembly process parameters. Finally, it issues automated assembly control logic to drive the execution unit to complete automated welding processing. This invention achieves closed-loop data management throughout the entire process from parts warehousing to finished product assembly, solving the problems of data fragmentation, poor traceability, and easy inflow of unqualified parts in traditional manufacturing processes. Simultaneously, it uses digital verification to proactively identify compatibility issues, overcoming the limitations of manual design, significantly improving product qualification rate, reducing rework costs, and increasing production efficiency, providing a reliable basis for the high-quality manufacturing of high-temperature lead-bismuth liquid alloy valves.

Description

Technical Field

[0001] This invention relates to the field of special valve manufacturing technology, specifically a method for manufacturing a high-temperature lead-bismuth liquid alloy valve. Background Technology

[0002] High-temperature lead-bismuth liquid alloy valves are core control components in cutting-edge fields such as fourth-generation nuclear reactors, advanced nuclear energy systems, and high-temperature thermal energy utilization devices. Their service environment is characterized by harsh features such as high temperature (typically exceeding 500℃), strong corrosion, high pressure, and special media flow characteristics. Therefore, extremely high requirements are placed on the valve's assembly precision, structural stability, material compatibility, and production consistency. However, in the actual manufacturing process of high-temperature lead-bismuth liquid alloy valves, inventory monitoring and good product status detection in the parts warehouse often rely on manual recording or single-device monitoring modes, lacking dynamic correlation with the 3D modeling database. This leads to discrepancies between the parts data in the virtual design stage and the actual inventory data, often resulting in designs that are feasible but the actual products are unusable or insufficient. Simultaneously, the 3D model database is mostly a static model, unable to synchronize key information such as parts inventory balance and yield rate in real time. This causes a disconnect between the assembly scheme design and actual production conditions, increasing the risk of assembly failure and resulting in production efficiency failing to meet production demands. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a method for preparing a high-temperature lead-bismuth liquid alloy valve, so as to solve the technical problems mentioned in the prior art.

[0004] A method for preparing a high-temperature lead-bismuth liquid alloy valve includes the following steps:

[0005] Multiple components of the high-temperature lead-bismuth liquid alloy valve to be manufactured are acquired, and a component library and an initial three-dimensional component model database are constructed. The component library is equipped with multiple valve assembly storage stations to store the multiple components of the high-temperature lead-bismuth liquid alloy valve to be manufactured one by one according to the set storage requirements. Corresponding detection equipment is configured at each valve assembly storage station to monitor the inventory data of the component library in real time. The initial three-dimensional component model database is simulated and modeled based on the design parameters of the component library, and is linked to the real-time monitoring data of the detection equipment to dynamically update the component data in the initial three-dimensional component model database.

[0006] According to the process requirements of the high-temperature lead-bismuth liquid alloy valve to be prepared, several sets of valve group data that meet the process requirements are randomly selected from the component data of the initial three-dimensional component model database. After the assembly constraint verification in the database is qualified, the three-dimensional target model and assembly process parameters are automatically generated.

[0007] Based on the assembly process parameters corresponding to the three-dimensional target model, an automated assembly control logic is generated and sent to the corresponding execution unit to retrieve multiple components of the high-temperature lead-bismuth liquid alloy valve to be prepared from the parts library according to the automated assembly control logic and complete the automated welding process at the welding station.

[0008] Optionally, when the component data in the initial three-dimensional component model database does not meet the current process requirements, process adaptive optimization logic and / or early warning information are generated;

[0009] The adaptive optimization logic is configured such that if the component data in the initial three-dimensional component model database does not meet the current process requirements, historical preparation data is retrieved to generate an optimization path according to a preset adjustment strategy to adjust the current process requirements.

[0010] The early warning information is configured to generate a graded early warning command to trigger the corresponding alarm module based on the influencing factors that the component data in the initial three-dimensional component model database does not meet the current process requirements.

[0011] Optionally, the factors that cause the component data in the initial three-dimensional component model database to not meet the current process requirements include at least one of insufficient component margin and component yield rate being lower than a preset value.

[0012] Optionally, the preset adjustment strategy includes at least one of a priority strategy and a quantity maximization strategy;

[0013] The priority strategy is configured as follows: the processing priority of valve groups is set according to the category of the high-temperature lead-bismuth liquid alloy valve to be prepared, and high-priority valve groups are matched with the best specification accessories first, while low-priority valve groups are matched with compatible accessories.

[0014] The quantity maximization strategy is configured to: calculate the current combinable quantity of accessories in the accessory library based on historical preparation data, and randomly adapt and combine them according to the combination maximization target of the high-temperature lead-bismuth liquid alloy valve to be prepared.

[0015] Optionally, the pass rate of the high-temperature lead-bismuth liquid alloy valve prepared according to any of the preset adjustment strategies is obtained, the weight coefficient of the corresponding preset adjustment strategy is obtained, and the adjustment strategy with the largest weight coefficient is selected from the preset adjustment strategies to generate an optimization path.

[0016] Optionally, the method for constructing the parts library specifically includes:

[0017] Based on the composition of the high-temperature lead-bismuth liquid alloy valve to be prepared, accessories of any size and specification are configured, and the corresponding number of valve assembly storage stations are set according to the category, material, specification and precision level of the accessories as classification criteria for one-to-one storage.

[0018] Optionally, the method for constructing the initial three-dimensional component model database specifically includes:

[0019] Based on the design parameters of each component in the component library, an initial 3D model is constructed using 3D modeling software, and then categorized and integrated according to assembly relationships to form an initial 3D component model database. At the same time, a communication link is established between the initial 3D component model database and the testing equipment, and the real-time monitored inventory data is associated with the attribute fields of the corresponding initial 3D model to dynamically update the component data in the initial 3D component model database.

[0020] Optionally, the detection device includes at least one of a weight sensor, an RFID tag reader, and a visual recognition camera.

[0021] Optionally, the execution unit includes a material handling module, a clamping module, and a welding module, and the automated assembly control logic is set as follows:

[0022] Based on the assembly process parameters of the three-dimensional target model, the target position of each component to be retrieved is determined to trigger the component retrieval command; the component retrieval command is configured as follows: based on the round-trip movement path between the welding station and the target position of each component, multiple connected motion trajectories are generated, and the multiple connected motion trajectories are dynamically adjusted according to the assembly order of the components.

[0023] When the material handling module moves any one of the components to the designated part of the welding station, a component clamping command is triggered. The component clamping command is configured to: adaptively select the corresponding clamping module according to the shape, structure and size of the high-temperature lead-bismuth liquid alloy valve to be prepared, and control the clamping components of the corresponding installation part to clamp and assemble the component according to the preset clamping sequence.

[0024] When the entire component or two connected components of the high-temperature lead-bismuth liquid alloy valve to be prepared are assembled, a component welding command is triggered. The component welding command is configured to: based on the welding characteristics of the high-temperature lead-bismuth liquid alloy valve to be prepared, set the current parameters, welding temperature and weld trajectory of the welding module to generate corresponding welding parameters, and the welding module welds the two connected components in sequence according to the corresponding welding parameters.

[0025] Optionally, the assembly constraints within the database include at least one of geometric adaptation constraints, process feasibility constraints, material and operating condition adaptation constraints, and dynamic inventory association constraints, wherein;

[0026] The geometric adaptation constraint is configured to: use the dimensional matching degree and positional fit relationship between the two connected parts as a constraint condition to detect in real time whether the assembly integrity of the high-temperature lead-bismuth liquid alloy valve to be prepared meets the process requirements; if it meets the process requirements, the verification is qualified.

[0027] The process feasibility constraint is configured to: set a process operability space threshold according to the automated processing flow of the execution unit, and adjust the installation spacing between two connected parts according to the process operability space threshold;

[0028] The material and working condition adaptation constraint is configured as follows: according to the process requirements of the high-temperature lead-bismuth liquid alloy valve to be prepared, the material compatibility threshold of each component is set, and the material attribute value of the component to be retrieved is restricted to be within the corresponding material compatibility threshold range.

[0029] The dynamic inventory association constraint is configured such that when the parts library detects that the parts to be retrieved do not meet the process requirements, the retrieval of the corresponding parts for assembly is prohibited.

[0030] The beneficial effects that this invention can produce include:

[0031] 1. The high-temperature lead-bismuth liquid alloy valve manufacturing method provided by this invention constructs a parts library equipped with multi-dimensional detection equipment and establishes a communication link between it and the initial three-dimensional parts model database. This allows the parts data of the virtual model to be synchronized in real time with key information such as actual inventory balance and yield rate, completely solving the problem of disconnect between virtual design and physical production. At the same time, the parts library is stored in partitions according to category, material, specification and precision level. Combined with the collaborative detection of weight sensors, RFID readers and visual recognition cameras, it realizes precise control of the entire life cycle of parts, reduces the risk of unqualified parts flowing into the assembly stage, lays a data foundation for subsequent assembly quality, and facilitates quality supervision.

[0032] 2. This invention constructs a multi-dimensional constraint system encompassing geometric adaptation, process feasibility, material and operating condition adaptation, and dynamic inventory correlation. Geometric adaptation constraints ensure the accuracy of component size and position matching, preventing assembly jams or sealing failures. Process feasibility constraints adjust installation spacing by setting operating space thresholds, ensuring the operability of automated equipment. Material and operating condition adaptation constraints limit material compatibility thresholds, guaranteeing the valve's core performance against high-temperature lead-bismuth corrosion. Dynamic inventory correlation constraints prevent the retrieval of unqualified or insufficient components, avoiding assembly failures at the source. This constraint system collectively verifies the assembly integrity of the 3D target model, strictly controls the configuration accuracy of the product's process path, ensures the product's processing quality pass rate, significantly reduces rework costs, and improves production efficiency.

[0033] 3. This invention generates integrated control logic for material handling, clamping, and welding based on a 3D target model. Through modular collaborative operation of execution units, it achieves fully automated processing. For example, the material handling module dynamically plans its motion trajectory according to the assembly sequence, shortening handling time; the clamping module adaptively selects the clamping scheme based on the valve's shape, avoiding component deformation or unstable clamping; the welding module customizes current, temperature, and weld trajectory parameters for high-temperature conditions, ensuring weld strength and sealing. This can shorten the manufacturing cycle of a single valve by more than 30%, and control the assembly accuracy deviation between different batches of valves within ±0.02mm, significantly improving product consistency.

[0034] 4. This invention addresses abnormal situations such as insufficient spare parts and low yield rates by designing a dual-path optimization mechanism that combines a priority strategy and a quantity maximization strategy. It selects the optimal path by configuring a weighted coefficient association model, ensuring optimal spare parts matching for high-priority orders while improving the combination efficiency of regular orders. Simultaneously, it generates tiered early warnings based on abnormal influencing factors, which can promptly remind operators to replenish stock and check for defective spare parts, effectively improving production continuity and risk resistance. Attached Figure Description

[0035] Figure 1 This is a process flow diagram of a method for preparing a high-temperature lead-bismuth liquid alloy valve according to the present invention. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figure 1As shown, this invention provides a method for preparing a high-temperature lead-bismuth liquid alloy valve, comprising the following steps: acquiring multiple component parts of the high-temperature lead-bismuth liquid alloy valve to be prepared, constructing a component library and an initial three-dimensional component model database; the component library is equipped with multiple valve group storage stations to store multiple component parts of the high-temperature lead-bismuth liquid alloy valve to be prepared one-to-one according to the set storage requirements, and configuring corresponding detection equipment at each valve group storage station to monitor the inventory data of the component library in real time; the initial three-dimensional component model database is simulated and modeled based on the design parameters of the component library, such as dimensional tolerances, material properties, and assembly interfaces, and is associated with the real-time detection equipment. The monitoring data dynamically updates the component data in the initial 3D component model database. Based on the process requirements of the high-temperature lead-bismuth liquid alloy valve to be manufactured, several sets of valve group data that meet the process requirements are randomly retrieved from the component data in the initial 3D component model database. After passing the assembly constraint verification in the database, a 3D target model and assembly process parameters are automatically generated. Based on the assembly process parameters corresponding to the 3D target model, automated assembly control logic is generated and sent to the corresponding execution unit to retrieve multiple component parts of the high-temperature lead-bismuth liquid alloy valve to be manufactured from the component library according to the automated assembly control logic and complete the automated welding process at the welding station. This process achieves closed-loop data control from parts warehousing to finished product assembly by combining digital modeling, intelligent warehouse management, and automated assembly. It solves the problems of data fragmentation and poor traceability in the previous manufacturing process, and reduces the risk of unqualified parts flowing into the assembly process. It lays a data foundation for subsequent assembly quality and facilitates quality supervision. At the same time, through assembly constraint verification in the database and dynamic simulation modeling, it can identify compatibility issues in advance, solving the limitations of manual design and the problem of missing working condition compatibility verification. It can ensure the pass rate of product processing quality, significantly reduce rework costs, and improve production efficiency.

[0038] Furthermore, when the component data in the initial 3D component model database does not meet the current process requirements, adaptive process optimization logic and / or early warning information are generated. The adaptive process optimization logic is configured as follows: if the component data in the initial 3D component model database does not meet the current process requirements, historical preparation data is retrieved to generate an optimization path according to a preset adjustment strategy to adjust the current process requirements. Specifically, the preset adjustment strategy includes at least one of a priority strategy and a quantity maximization strategy. The priority strategy is configured as follows: the valve group processing priority is set according to the category of the high-temperature lead-bismuth liquid alloy valve to be prepared, and high-priority valve groups are matched with the best specification components first, while low-priority valve groups are matched with compatible components. The quantity maximization strategy is configured as follows: the number of components that can be combined in the component library is calculated based on historical preparation data, and the combination is randomly adapted according to the combination maximization target of the high-temperature lead-bismuth liquid alloy valve to be prepared. In the above, the pass rate of the high-temperature lead-bismuth liquid alloy valve prepared according to any preset adjustment strategy is obtained, the weight coefficient of the corresponding preset adjustment strategy is obtained, and the adjustment strategy with the largest weight coefficient is selected from the preset adjustment strategies to generate an optimization path. By linking historical preparation data of the 3D target model with weighted coefficients, the optimal result is selected from the dual-path optimization mechanism. This ensures optimal component matching for high-priority orders while improving the combination efficiency of regular orders. The early warning information is configured to generate tiered early warning commands based on factors affecting the component data in the initial 3D component model database that do not meet current process requirements, triggering corresponding alarm modules such as alarms. These factors include at least one of insufficient component stock and a component yield rate lower than a preset value. This timely alerts operators to replenish stock and check for defective components, effectively improving production continuity and resilience.

[0039] In this embodiment, the method for constructing the parts library specifically includes: configuring parts of arbitrary size and specifications according to the composition structure of the high-temperature lead-bismuth liquid alloy valve to be prepared, and setting a corresponding number of valve group storage stations for one-to-one storage according to the category, material, specifications and precision level of the parts as classification criteria, so as to realize the refined management of the parts library, and at the same time facilitate the testing equipment to scan and identify according to the corresponding label information.

[0040] In this embodiment, the method for constructing the initial 3D component model database specifically includes: based on the design parameters of each component in the component library, such as size and shape, constructing the corresponding initial 3D model using 3D modeling software, and classifying and integrating them according to assembly relationships to form the initial 3D component model database; specifically, to facilitate the retrieval of component data, multiple different preparation model databases can be set up according to different specifications of the high-temperature lead-bismuth liquid alloy valve to be prepared, and initial 3D models of the same size and specification can be classified into the same storage unit of the preparation model database according to assembly relationships. Simultaneously, a communication link is established between the initial 3D component model database and the testing equipment, and the real-time monitored inventory data is associated with the attribute fields of the corresponding initial 3D model to dynamically update the component data in the initial 3D component model database, solving the problem of disconnect between virtual design and physical production. Specifically, high-precision modeling software such as SolidWorks, UG, and CATIA can be used for 3D modeling.

[0041] Furthermore, the testing equipment includes at least one of a weight sensor, an RFID tag reader, and a visual recognition camera. The weight sensor monitors the weight of the spare parts at the workstation, the RFID tag reader identifies the parts' identity information, and the visual recognition camera checks the parts' appearance integrity. In this embodiment, the weight sensor, RFID tag reader, and visual recognition camera are used to collaboratively test the spare parts at the valve assembly storage station, achieving precise control over the entire lifecycle of the spare parts. This reduces the risk of unqualified parts entering the assembly process, lays a data foundation for subsequent assembly quality, and facilitates quality supervision.

[0042] Furthermore, the execution unit generates integrated control logic for material handling, clamping, and welding based on the 3D target model. The execution unit includes a material handling module, a clamping module, and a welding module. Full-process automated processing is achieved through modular collaborative operation of the execution unit. The automated assembly control logic is set as follows: based on the assembly process parameters of the 3D target model, the target position of each component to be retrieved is determined to trigger a component retrieval command; the component retrieval command is configured as follows: based on the round-trip movement path between the welding station and the target position of each component, multiple connected motion trajectories are generated, and these multiple connected motion trajectories are dynamically adjusted according to the assembly order of the components to shorten the handling time; when the material handling module moves any component to the designated position of the welding station, a component clamping command is triggered. The component clamping command is configured as follows: based on the external structure and dimensions of the high-temperature lead-bismuth liquid alloy valve to be prepared... The size is adapted to select the corresponding clamping module. According to the preset clamping sequence, the clamping components of the corresponding installation part are controlled to clamp and assemble the accessories to avoid deformation or unstable clamping of the accessories during the clamping process. When the entire accessory or two connected accessories of the high-temperature lead-bismuth liquid alloy valve to be prepared are assembled, the accessory welding command is triggered. The accessory welding command is configured as follows: according to the welding characteristics of the high-temperature lead-bismuth liquid alloy valve to be prepared, the current parameters, welding temperature and weld trajectory of the welding module are set to generate the corresponding welding parameters. The welding module welds the two connected accessories in sequence according to the corresponding welding parameters to ensure the weld strength and sealing performance.

[0043] Furthermore, the assembly constraints within the database include at least one of geometric adaptation constraints, process feasibility constraints, material and operating condition adaptation constraints, and dynamic inventory association constraints. Specifically, the geometric adaptation constraint is configured to: use the dimensional matching degree and positional fit between two connected components as constraints to detect in real time whether the assembly integrity of the high-temperature lead-bismuth liquid alloy valve to be prepared meets the process requirements; if it meets the process requirements, the verification is successful. The process feasibility constraint is configured to: set a process operable space threshold according to the automated processing flow of the execution unit, and adjust the installation spacing between two connected components according to the process operable space threshold. The material and operating condition adaptation constraint is configured to: set a material compatibility threshold for each component according to the process requirements of the high-temperature lead-bismuth liquid alloy valve to be prepared, and restrict the material attribute value of the currently retrieved component to be within the corresponding material compatibility threshold range. The dynamic inventory association constraint is configured to: when the component library detects that the currently retrieved component does not meet the process requirements, it prohibits the retrieval of the corresponding component for assembly, thus avoiding assembly failure from the source. This constraint system allows for the joint verification of the assembly integrity of the 3D target model, strict control over the configuration accuracy of the product process path, ensuring the pass rate of product processing quality, significantly reducing rework costs, and improving production efficiency.

[0044] As a specific embodiment of the present invention, the preparation method includes the following steps:

[0045] Step S1: Construct a parts library and an initial 3D parts model database: Disassemble a high-temperature lead-bismuth liquid alloy valve for nuclear reactors to obtain five types of parts, including valve bodies (material Pb-Bi-0.5Ag alloy, 50mm diameter), valve seats (high-temperature resistant ceramic), valve cores (Pb-Bi-0.5Ag alloy), seals, and high-temperature resistant connectors. Set up five one-to-one workstations in the parts library, each equipped with an UR500 RFID reader, a 0.1g precision weight sensor, and a high-definition vision camera. Construct initial 3D models of each part using SolidWorks 2024, generate an initial 3D parts model database, and associate it with the testing equipment. Synchronize the inventory of each workstation in real time, such as 20 valve bodies and 18 valve seats.

[0046] Step S2, construct a three-dimensional target model: According to the valve process requirements of nuclear reactors, such as operating temperature of 500℃ and pressure of 10MPa, retrieve the corresponding valve group accessory data from the initial three-dimensional accessory model database. After the interface matching verification is qualified, generate a three-dimensional target model and output 8 welding points. The assembly sequence is valve body → valve seat → valve core → seal → high temperature resistant connector.

[0047] Step S3, Execute automated welding: The system generates instructions, such as retrieving one corresponding accessory from station 1 (valve body) and station 2 (valve seat), using a J-50 arc-shaped clamp with a clamping force of 0.8MPa and a positioning error of ≤0.02mm. Welding is performed using a WS-400 argon arc welding machine with a current of 120A and a welding temperature of 280℃. The weld trajectory is a continuous circular weld with a holding time of 5 minutes. First, the accessories are transferred to the welding station in sequence using an AGV transfer vehicle, and then clamped and assembled using a mechanical clamping arm before welding. During the welding process, the weld width should be between 0.8-1.2mm according to visual inspection.

[0048] Step S4, Process Optimization: During the manufacturing process, when the parts warehouse detects that the valve seat inventory has dropped to 2 pieces, which is less than the 5 pieces required for the current batch, the system immediately triggers a Level 1 warning. At the same time, historical manufacturing data is retrieved and it is found that the ordinary ceramic valve seat is compatible with a temperature of 480℃. Since the current valve assembly is for nuclear reactor use and is of high priority, the system prioritizes replenishing the special valve seat. At the same time, the assembly process parameters are temporarily adjusted to reduce the welding temperature to 270℃ to ensure the manufacturing quality of the 2 special valve seats during the replenishment period. After replenishment, the original parameters are restored, thereby ensuring product quality and avoiding usage risks during emergency operations.

Claims

1. A method for preparing a high-temperature lead-bismuth liquid alloy valve, characterized in that, Includes the following steps: Multiple components of the high-temperature lead-bismuth liquid alloy valve to be prepared are obtained, and a component library and an initial three-dimensional component model database are constructed. The component library is equipped with multiple valve group storage stations to store multiple components of the high-temperature lead-bismuth liquid alloy valve to be prepared one by one according to the set storage requirements. Corresponding detection equipment is configured at each valve group storage station to monitor the inventory data of the component library in real time. The initial three-dimensional parts model database is simulated and modeled based on the design parameters of the parts library, and is associated with the real-time monitoring data of the testing equipment to dynamically update the parts data in the initial three-dimensional parts model database; The method for constructing the initial three-dimensional parts model database includes: based on the design parameters of each part in the parts library, constructing the corresponding initial three-dimensional model using three-dimensional modeling software, and classifying and integrating them according to assembly relationships to form the initial three-dimensional parts model database; at the same time, establishing a communication link between the initial three-dimensional parts model database and the testing equipment, and associating the real-time monitored inventory data with the attribute fields of the corresponding initial three-dimensional model to dynamically update the parts data in the initial three-dimensional parts model database; According to the process requirements of the high-temperature lead-bismuth liquid alloy valve to be prepared, several sets of valve group data that meet the process requirements are randomly selected from the component data of the initial three-dimensional component model database. After the assembly constraint verification in the database is qualified, the three-dimensional target model and assembly process parameters are automatically generated. Based on the assembly process parameters corresponding to the three-dimensional target model, an automated assembly control logic is generated and sent to the corresponding execution unit to retrieve multiple components of the high-temperature lead-bismuth liquid alloy valve to be prepared from the parts library according to the automated assembly control logic and complete the automated welding process at the welding station.

2. The method for preparing a high-temperature lead-bismuth liquid alloy valve according to claim 1, characterized in that, When the component data in the initial three-dimensional component model database does not meet the current process requirements, process adaptive optimization logic and / or early warning information are generated. The adaptive optimization logic is configured such that if the component data in the initial three-dimensional component model database does not meet the current process requirements, historical preparation data is retrieved to generate an optimization path according to a preset adjustment strategy to adjust the current process requirements. The early warning information is configured to generate a graded early warning command to trigger the corresponding alarm module based on the influencing factors that the component data in the initial three-dimensional component model database does not meet the current process requirements.

3. The method for preparing a high-temperature lead-bismuth liquid alloy valve according to claim 2, characterized in that, Factors affecting the fact that the component data in the initial three-dimensional component model database does not meet the current process requirements include at least one of the following: insufficient component margin and component yield rate being lower than the preset value.

4. The method for preparing a high-temperature lead-bismuth liquid alloy valve according to claim 2, characterized in that, The preset adjustment strategy includes at least one of a priority strategy and a quantity maximization strategy; The priority strategy is configured as follows: the processing priority of valve groups is set according to the category of the high-temperature lead-bismuth liquid alloy valve to be prepared, and high-priority valve groups are matched with the best specification accessories first, while low-priority valve groups are matched with compatible accessories. The quantity maximization strategy is configured to: calculate the current combinable quantity of accessories in the accessory library based on historical preparation data, and randomly adapt and combine them according to the combination maximization target of the high-temperature lead-bismuth liquid alloy valve to be prepared.

5. The method for preparing a high-temperature lead-bismuth liquid alloy valve according to claim 4, characterized in that, Obtain the pass rate of the high-temperature lead-bismuth liquid alloy valve prepared according to any of the preset adjustment strategies, obtain the weight coefficient of the corresponding preset adjustment strategy, and select the adjustment strategy with the largest weight coefficient from the preset adjustment strategies to generate an optimization path.

6. The method for preparing a high-temperature lead-bismuth liquid alloy valve according to claim 1, characterized in that, The method for constructing the parts library specifically includes: Based on the composition of the high-temperature lead-bismuth liquid alloy valve to be prepared, accessories of any size and specification are configured, and the corresponding number of valve assembly storage stations are set according to the category, material, specification and precision level of the accessories as classification criteria for one-to-one storage.

7. The method for preparing a high-temperature lead-bismuth liquid alloy valve according to claim 1, characterized in that, The detection equipment includes at least one of a weight sensor, an RFID tag reader, and a visual recognition camera.

8. The method for preparing a high-temperature lead-bismuth liquid alloy valve according to claim 1, characterized in that, The execution unit includes a material handling module, a clamping module, and a welding module, and the automated assembly control logic is set as follows: Based on the assembly process parameters of the three-dimensional target model, the target position of each component to be retrieved is determined to trigger the component retrieval command; the component retrieval command is configured as follows: based on the round-trip movement path between the welding station and the target position of each component, multiple connected motion trajectories are generated, and the multiple connected motion trajectories are dynamically adjusted according to the assembly order of the components. When the material handling module moves any one of the components to the designated part of the welding station, a component clamping command is triggered. The component clamping command is configured to: adaptively select the corresponding clamping module according to the shape, structure and size of the high-temperature lead-bismuth liquid alloy valve to be prepared, and control the clamping components of the corresponding installation part to clamp and assemble the component according to the preset clamping sequence. When the entire component or two connected components of the high-temperature lead-bismuth liquid alloy valve to be prepared are assembled, a component welding command is triggered. The component welding command is configured to: based on the welding characteristics of the high-temperature lead-bismuth liquid alloy valve to be prepared, set the current parameters, welding temperature and weld trajectory of the welding module to generate corresponding welding parameters, and the welding module welds the two connected components in sequence according to the corresponding welding parameters.

9. The method for preparing a high-temperature lead-bismuth liquid alloy valve according to claim 1, characterized in that, The assembly constraints within the database include at least one of geometric adaptation constraints, process feasibility constraints, material and operating condition adaptation constraints, and dynamic inventory association constraints, wherein; The geometric adaptation constraint is configured to: use the dimensional matching degree and positional fit relationship between the two connected parts as a constraint condition to detect in real time whether the assembly integrity of the high-temperature lead-bismuth liquid alloy valve to be prepared meets the process requirements; if it meets the process requirements, the verification is qualified. The process feasibility constraint is configured to: set a process operability space threshold according to the automated processing flow of the execution unit, and adjust the installation spacing between two connected parts according to the process operability space threshold; The material and working condition adaptation constraint is configured as follows: according to the process requirements of the high-temperature lead-bismuth liquid alloy valve to be prepared, the material compatibility threshold of each component is set, and the material attribute value of the component to be retrieved is restricted to be within the corresponding material compatibility threshold range. The dynamic inventory association constraint is configured such that when the parts library detects that the parts to be retrieved do not meet the process requirements, the retrieval of the corresponding parts for assembly is prohibited.

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