A steam generator throttle parameter design platform and method
By building a design platform that integrates parametric modeling, multiphysics calculation, and automated drawing generation, the problems of low design efficiency and large errors in steam generator throttling devices have been solved, enabling efficient and accurate nuclear power equipment design and supporting the rapid reuse of historical data.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 东方电气股份有限公司
- Filing Date
- 2026-04-13
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional steam generator throttling device designs are inefficient, have uncontrolled parameter correlations, and suffer from large calculation errors, making it difficult to meet the high precision and safety standards of nuclear power equipment. Furthermore, it is difficult to reuse historical design data.
A design platform integrating parametric modeling, multiphysics calculation, automated drawing generation, and data management is constructed. It adopts pre-built parametric templates for throttling components, combined with turbulence model correction and nuclear power-specific engineering drawing templates to achieve automated design and data management.
Significantly improve design efficiency, shorten design cycle, reduce calculation errors, ensure design compliance with nuclear power specifications, and enable efficient reuse of historical design data.
Smart Images
Figure CN122333671A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of digital design technology for nuclear power equipment, and specifically relates to a parametric design platform and method for steam generator throttling components. Background Technology
[0002] As the core heat exchange equipment in a fast neutron reactor, the steam generator's throttling device design must meet the following stringent requirements: High-precision drag coefficient control: The drag coefficient error must be controlled within ±5% to ensure uniform fluid flow distribution and avoid safety risks caused by pressure fluctuations. Complex structural parameter correlation: Structures such as multi-stage eccentric orifice plates, gear turbulence, and T-shaped orifice plates involve dozens of interrelated geometric parameters (such as the number of stages, orifice diameter, eccentricity, etc.), and manual adjustments can easily lead to dimensional chain errors. High safety standard compliance: Design documents must comply with international and domestic standards such as ASME BPVC and GB / T, including complete dimensional tolerances, material requirements, and testing procedures.
[0003] Traditional design methods rely on engineers manually drawing 3D models and adjusting parameters one by one, which has the following significant drawbacks: Low efficiency: Modeling a single multi-stage eccentric orifice plate takes more than 20 hours, and each adjustment of the drag coefficient requires a complete redesign. In one demonstration project, a single throttling component underwent an average of 5 iterations, taking approximately 2 weeks. Uncontrolled parameter correlation: Parameters such as eccentricity and orifice diameter have a non-linear relationship with the drag coefficient, making accurate matching difficult through manual calculation. There have been cases where incorrect calculation of orifice plate spacing led to an actual drag coefficient deviating from the design value by 12%. Difficulty in knowledge reuse: Historical design data is stored in scattered file formats, resulting in a parameter reuse rate of less than 30% under similar operating conditions, and inefficient retrieval.
[0004] The current application of parametric design technology in the nuclear power field faces the following bottlenecks: General-purpose CAD software (such as SolidWorks) is not optimized for the multi-physics characteristics (such as turbulence effects and staged pressure reduction requirements) of nuclear power throttling devices, requiring manual establishment of parameter association rules. Traditional Bernoulli equations ignore fluid turbulence effects, leading to drag coefficient calculation errors exceeding 10%, while commercial CFD software (such as ANSYS) requires professional operation and is difficult to integrate into the design process. Engineering drawings generated by existing tools often omit nuclear power-specific technical requirements, necessitating manual verification, which is time-consuming and labor-intensive. Summary of the Invention
[0005] In order to solve the above-mentioned problems in the existing technology, the purpose of this invention is to provide a parametric design platform and method for steam generator throttling components, and to build a one-stop design platform integrating "parametric modeling - multiphysics calculation - automated drawing output - data management".
[0006] The technical solution adopted in this invention is as follows: A parametric design platform for steam generator throttling elements includes: The 3D parametric modeling module includes pre-built parametric templates for multiple types of throttling devices, and the main parameters of the templates are associated with the features of the 3D model through rules. The drag coefficient correlation calculation module is used to calculate and output the throttling device structure parameters that drive the three-dimensional parametric modeling module based on the input target drag coefficient, combined with the preset drag coefficient correlation model and turbulence model correction. An automated drawing module is used to automatically generate 2D engineering drawings, including dimensional tolerances and technical requirements, based on the generated 3D model and by calling pre-stored nuclear power-specific engineering drawing templates; and The design knowledge base and data management module includes a database storing historical design cases and provides a case matching and parameter reuse mechanism based on resistance coefficient similarity.
[0007] As a preferred embodiment of the present invention, the multiple types of throttling devices include multi-stage eccentric orifice plate throttling devices, gear-type turbulence throttling devices, and T-type orifice throttling devices; The parameterized template of the multi-stage eccentric orifice plate throttling device defines the number of stages, eccentricity, orifice diameter, and orifice plate spacing, and uses rules to achieve staggered eccentric angles of adjacent orifice plates; the parameterized template of the gear-type throttling device defines the tooth height, tooth width, and number of teeth, and uses rules to achieve automatic matching of tooth width and number of teeth; the parameterized template of the T-hole throttling device defines the horizontal hole diameter, vertical hole diameter, and baffle cutting thickness, and uses Boolean operations to generate the T-hole structure.
[0008] As a preferred embodiment of the present invention, the drag coefficient correlation calculation module includes: The fitting model unit stores the drag coefficient correlation models for three types of throttling devices obtained by fitting experimental data; and Turbulence correction element, used for Realizable k The ε model corrects the initial drag coefficient output by the fitted model unit and iteratively adjusts the model constants until the calculation error meets the preset accuracy requirements.
[0009] As a preferred embodiment of the present invention, the Realizable k-type turbulence correction unit employs... The ε model has the following model constants: C2=2.5, σk=0.7, σε=0.8.
[0010] As a preferred embodiment of the present invention, the automated drawing module is further configured to: Structural parameters are automatically extracted from the three-dimensional parametric modeling module and filled into the title block and detail table of the nuclear power-specific engineering drawing template; Based on preset rules, dimensional tolerances, geometric tolerances, and material, heat treatment, and testing technical requirements that conform to ASME or GB / T standards are automatically added to the engineering drawings.
[0011] As a preferred embodiment of the present invention, the design knowledge base and data management module further includes: A similar case matching unit is used to retrieve and return multiple historical cases with the smallest difference in drag coefficient from the database based on the input target drag coefficient. The parameter inheritance unit is used to reuse the structural parameters of the user-selected historical cases in the current design and to adaptively adjust them according to the diameter of the heat exchanger tubes in the current design.
[0012] A parametric design method for a steam generator throttling element includes the following steps: S1: Obtain the design parameters input by the user, including the target resistance coefficient and the diameter of the heat exchanger tube, and perform a validity verification; S2: Based on the target drag coefficient, the structural parameters of the throttling device are matched and calculated by the drag coefficient correlation calculation module; S3: Call the 3D parametric modeling module to automatically generate a 3D model of the throttling device based on the pre-stored parametric template driven by the structural parameters; S4: Call the automated drawing module to automatically generate two-dimensional engineering drawings that conform to nuclear power specifications based on the three-dimensional model; S5: Link and store the generated 3D model, 2D engineering drawings, and design process data to the design knowledge base and data management module.
[0013] As a preferred embodiment of the present invention, step S2 further includes a turbulence model correction sub-step: Calculate the initial drag coefficient based on the fitted model; Call Realizable k The ε model performs a corrected calculation of the initial drag coefficient; If the error between the corrected drag coefficient and the target drag coefficient exceeds the threshold, the turbulence model constants are adjusted, and the correction calculation is performed again until the error meets the requirements.
[0014] As a preferred embodiment of the present invention, after generating the three-dimensional model in step S3, a machinability verification step is also included: for gear turbulence-type throttling components, verify whether the calculated tooth height is less than the minimum machining size. If so, automatically increase the number of tooth plates and recalculate until the tooth height meets the machinability requirements.
[0015] As a preferred embodiment of the present invention, step S5 further includes: automatically generating a design report containing the drag coefficient calculation process, turbulence model correction results, and compliance check records, and comparing it with the corresponding three-dimensional model and two-dimensional engineering. Figure 1 Same storage.
[0016] The beneficial effects of this invention are as follows: 1. This invention integrates parametric modeling, multiphysics calculation, and automated drawing generation, reducing the design cycle of a single throttling device from 2 weeks to 3 days in the traditional method, and compressing the modeling time from 20 hours to 30 minutes, thereby improving the overall design efficiency by more than 80%.
[0017] 2. This invention adopts a two-step strategy of "initial calculation of fitting model + refinement of Realizable kε model" and optimizes the constants of turbulence model through orthogonal experiments, controlling the calculation error of drag coefficient within 3% and the actual measurement error after processing does not exceed 5%, which greatly ensures the accuracy of fluid distribution.
[0018] 3. This invention ensures that the generated engineering drawings fully include the material, tolerance, heat treatment and testing requirements required by ASME, GB / T and other standards by using built-in nuclear power-specific engineering drawing templates and automatic annotation rules, thus avoiding human oversights.
[0019] 4. This invention establishes a structured design knowledge base, supporting intelligent case retrieval and one-click parameter inheritance based on drag coefficient similarity, enabling the effective accumulation and reuse of historical design experience and reducing repetitive work. Attached Figure Description
[0020] Figure 1 This is a basic flowchart of the parameterized design platform and method for the steam generator throttling element in this embodiment of the invention.
[0021] Figure 2 This is a flowchart illustrating the parameter design of the multi-stage eccentric orifice plate throttling device in an embodiment of the present invention. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the invention can be combined with each other.
[0024] The parameterized design platform for the steam generator throttling element in this embodiment includes: The 3D parametric modeling module includes pre-built parametric templates for multiple types of throttling devices, and the main parameters of the templates are associated with the features of the 3D model through rules. The drag coefficient correlation calculation module is used to calculate and output the throttling device structure parameters that drive the three-dimensional parametric modeling module based on the input target drag coefficient, combined with the preset drag coefficient correlation model and turbulence model correction. An automated drawing module is used to automatically generate 2D engineering drawings, including dimensional tolerances and technical requirements, based on the generated 3D model and by calling pre-stored nuclear power-specific engineering drawing templates; and The design knowledge base and data management module includes a database storing historical design cases and provides a case matching and parameter reuse mechanism based on resistance coefficient similarity.
[0025] By establishing parameterized templates for three types of throttling components, each template includes primary parameters (driving model shape), secondary parameters (auxiliary structural dimensions), and positioning parameters (spatial coordinates), providing a foundation for subsequent parameterized design calculations.
[0026] Establish relevant parameters for multi-stage eccentric orifice plates: Define 12 parameters including stage number, eccentricity, orifice diameter, orifice plate spacing, and thickness. Use iLogic rules to achieve a 180° staggered arrangement of adjacent orifice plates to suppress eddy current generation.
[0027] Establish relevant parameters for gear-type throttling components: Define 9 parameters including tooth height, tooth width, number of tooth plates, and tooth thickness. Based on the gear module formula, achieve automatic matching of tooth width and number of teeth to avoid machining interference.
[0028] Establish relevant parameters for the T-hole throttling device: Define 11 parameters, including the diameter of the horizontal hole, the diameter of the vertical hole, the cutting thickness of the baffle, and the diameter of the cylinder. Generate the T-hole structure through Boolean difference set operation to simulate the turbulence effect after the fluid impacts the baffle.
[0029] The iLogic rule is used to directly associate parameters with model features. For example, the rule for calculating the eccentric hole position coordinates of a multi-stage eccentric orifice plate is defined by defining the eccentricity e, the inner diameter D of the pipe, and the orifice plate number i, and then calculating the eccentric coordinates of the i-th stage orifice plate.
[0030] A sensitivity analysis model was established, and a correlation model for the drag coefficients of three types of throttling devices was obtained by fitting 120 sets of experimental data. The accuracy of the model was verified by R. 2 Value (coefficient of determination) verification.
[0031] Using Realizable k ε model replaces standard k The ε model, which satisfies the mathematical constraints of Reynolds stress, can more accurately simulate the strong swirling flow field inside the throttling device.
[0032] The model constants were optimized through orthogonal experiments: C²=2.5 (default 1.92), σk=0.7 (default 1.0), σε=0.8 (default 1.3), reducing the calculation error from an average of 8% to 3.2%. The numerical simulation calculation process first calculates the drag coefficient based on the fitted model, and then uses Realizable k... ε model correction: If the error is >5%, the Cμ value will be automatically adjusted until the accuracy requirements are met.
[0033] Complete the interface design and function implementation interactive operation process. Parameter input: The user inputs parameters such as resistance coefficient (required, range 600~2000), heat exchange tube diameter (D, unit mm), and material type (e.g. stainless steel 304, SA-479M) on the visual interface. The system verifies the validity of the parameters in real time (e.g., D>0, resistance coefficient is within the allowable range).
[0034] The throttling device model preview is embedded with an Inventor View control, allowing users to rotate and zoom the 3D model preview in real time and dynamically observe the impact of parameter adjustments on the structure.
[0035] Click the modeling button to call iLogic rules to generate a model of the throttling component, and simultaneously calculate and display output parameters such as the number of stages and the aperture.
[0036] Click the Engineering Drawing button to automatically generate a 2D engineering drawing that conforms to ASME standards based on the 3D model, including the front view, sectional view, dimensional tolerance annotations, and technical requirements.
[0037] To automate the generation of engineering drawings, a nuclear power-specific engineering drawing template (.idw format) is created. The template includes a view layout: main view (showing the overall structure), left view (showing the aperture distribution), and sectional view (showing the internal flow channels). The default scale is 5:1.
[0038] Achieve automated dimensional annotation, automatically extract iLogic parameters, and add tolerance annotations. Part materials must meet ASME SA-479M 321 standards, and the heat treatment state must be solution annealed. All machined surfaces must undergo 100% liquid penetration testing (LPT), in accordance with ASME BPVC Volume V Mandatory Appendix 8. Unspecified dimensional tolerances shall conform to GB / T1804-m grade, and unspecified geometric tolerances shall conform to GB / T1184-K grade.
[0039] The data architecture and functionality were established, and the database design used SQL Server 2019 to build a distributed database, containing three core data tables. The design case table stores fields such as drag coefficient, throttling device type, number of stages, orifice diameter, eccentricity, design date, and engineer number, and supports searching for similar cases within the range of "drag coefficient ±100".
[0040] The supplementary material property table stores parameters such as density (ρ), elastic modulus (E), coefficient of thermal expansion (α), and allowable stress (σallow).
[0041] Establish a process specification table, store machining process parameters, turning feed rate 0.1~0.3mm / r, milling cutting speed 10~20m / min, and inspection procedures.
[0042] A knowledge reuse mechanism is established, and a similar case matching algorithm is adopted. Based on the input resistance coefficient ζ, the resistance coefficient difference Δζ of historical cases is calculated, and the cases are sorted in ascending order of Δζ to return the top 5 cases with high matching degree.
[0043] Design parameter inheritance function: After selecting a historical case, its parameters (such as number of stages and aperture) can be reused with one click and automatically adjusted to the current design heat exchanger tube diameter.
[0044] The specific flow of the parametric design method of the present invention is as follows: Step 1: Parameter input and preprocessing; Step 2: Input the verification logic. The resistance coefficient must be between 600 and 2000; otherwise, a warning box will pop up: "Resistance coefficient exceeds the design range, please re-enter!" The heat exchange tube diameter D must be >0 and ≤20mm; otherwise, the message will be: "Please enter the effective tube diameter (1~20mm)!". Step 3: Initialization calculation: Calculate the cross-sectional area of the pipe flow based on D: A = πD² / 4; Automatically load the default material (stainless steel 304) with density ρ = 7930 kg / m³ and dynamic viscosity μ = 0.001 Pa•s; Step 4: Throttling element type matching and parameter calculation; Step 5: Use the algorithm to match the throttling calculation model and the 3D modeling mode; parameter calculation details, the number of eccentric orifice plates N is determined, and the grade threshold (e.g., [740,1011,1299,1480]) is quickly matched using the bisection method. Step 6: Optimize the number of gear teeth n in the gear agitator. If the calculated tooth height H < 1.5mm (minimum machining size), then n = n + 1, until H ≥ 1.5mm, to ensure the manufacturability of the structure. Step 7: Match the diameters of the horizontal and vertical holes in the T-shaped perforated plate, and forcefully constrain d2≤d1 to prevent the vertical holes from blocking the flow channels of the horizontal holes; Step 8: Turbulence model correction and compliance verification; Step 9: Drag coefficient correction process. Calculate the initial drag coefficient ζ_fit based on the fitted model; call Realizable k... The ε model calculates the correction coefficient Δζ=ζ_fit•(1-δ), where δ is the error correction factor (tested experimentally, δ=0.03-0.05); if |ζ_fit-ζ_target|>5%, then adjust the model constant Cμ=0.085-0.08 until the error meets the target. Step 10: 3D modeling and engineering drawing generation; Step 11: Use the Inventor API to create iLogic rules for multi-level eccentric orifice plates and generate N-level orifice plates in a loop; Step 12: Configure the engineering drawing template, including automatic filling of the title bar, design unit (Dongfang Electric Corporation), document number, scale, materials, and other information; Step 13: Automatically extract part parameters from the Bill of Materials (BOM): grade, hole diameter, material, weight, etc. Step 14: Design results archiving and output, data archiving logic, automatic generation of design report (PDF format), including drag coefficient calculation process, turbulence model correction results, and compliance check records; Step 15: Upload the Inventor files (.ipt, iam, idw) and reports to the database, and associate metadata such as designer and project number; Step 16: Output format compatibility, supports exporting to common formats such as STEP and STL, facilitating integration with CAE software (such as ANSYS) and CAM systems (such as UG NX); Step 17: Engineering drawings support PDF printing and DXF format conversion to meet the paperless production needs of the processing workshop.
[0045] This invention improves efficiency by reducing the design cycle of throttling devices from 2 weeks to 3 days and modeling time from 20 hours to 30 minutes, achieving a design efficiency improvement of over 80%. Through turbulence model correction and parameter linkage control, the calculation error of the drag coefficient is controlled within 3%, and the measured error after manufacturing is ≤5%. A nuclear power-specific design specification library is established to automate the generation and structured management of design documents (models, engineering drawings, reports), supporting rapid retrieval of historical cases and parameter reuse.
[0046] Example: like Figure 1 As shown, this invention provides a method for parametric design of throttling components based on Inventor software. The core objective is to build a one-stop design platform integrating "parametric modeling, multiphysics calculation, automated drawing generation, and data management." It mainly includes: a 3D parametric modeling module, a drag coefficient correlation calculation module, a visualization and automated drawing generation module, and a design knowledge base and data management module.
[0047] An automated workflow is established, encompassing parametric modeling, parametric design, parametric solving, and parametric plotting. A corresponding database is also created to store simulation models, parameters, results, operating parameters, and material properties, facilitating rapid design and analysis of steam generator throttling components. A user-friendly interface is also included, ensuring ease of operation and meeting the needs of users with varying skill levels.
[0048] In terms of performance, the parametric design software for steam generator throttling elements runs quickly and can rapidly and accurately output 3D models and 2D engineering drawings based on input parameters. The software provides an intuitive, simple, and user-friendly interface, allowing users to easily input design requirements, view results, and interact with the system.
[0049] like Figure 2 As shown, the software, based on the completed structural selection of the steam generator throttling device, uses Inventor to parametrically generate and automatically draw the throttling device. It uses structural parameters such as the length, width, thickness, orifice size and position of the throttling device as output variables, and the resistance coefficient of the steam generator throttling device as input variable. Through the correlation obtained from the selection, it substitutes the resistance coefficient of the steam generator throttling device to calculate the structural parameters of the throttling device, and outputs a 3D model of the steam generator throttling device and annotated engineering drawings. Parametrically designed structures include multi-stage eccentric orifice plate throttling devices, gear throttling devices, and T-shaped orifice plate throttling devices, such as... Figure 1 and 2 The technical flow chart for parametric design of multi-stage eccentric orifice plates is shown. The technical flow chart for parametric design of gear throttling devices and T-shaped orifice plate throttling devices is basically the same as that for parametric design of multi-stage eccentric orifice plates.
[0050] The method for parametric design of throttling components based on Inventor software consists of the following steps: "parametric modeling - multiphysics calculation - automated drawing output - data management".
[0051] Open the software launcher (.exe), click to run the multi-stage eccentric orifice plate throttling device parametric design software, enter the correct account and password to log in, select the required throttling device model, and you will be redirected to Inventor software, where you can enter the drag coefficient and other parameters.
[0052] Clicking the Modeling button will start the software calculation and draw a 3D structural diagram of the main components of the throttling device, and output the calculated parameters in the output section; clicking the Assembly button will create a 3D assembly model of the throttling device structure; clicking the Engineering Drawing button will draw a 2D engineering drawing of the 3D assembly model of the throttling device structure.
[0053] Install via the throttling component parametric 3D design software 1.0.exe. The installation location can be selected according to your needs. Check the installation shortcut, and click the shortcut to start after successful installation.
[0054] Launching the throttling device parameterization software version 1.0 will redirect you to the login screen. Enter the correct username and password on the login screen, and click login to proceed to the model selection screen.
[0055] After entering the correct account and password, click "Login" to be redirected to the model selection interface. On the model selection interface, you can select gear throttling device, eccentric orifice plate throttling device, or T-shaped orifice plate throttling device. Click "OK" to jump to the selected model.
[0056] In the model selection interface, you can choose from gear throttling devices, eccentric orifice plate throttling devices, or T-shaped orifice plate throttling devices. Clicking "OK" will jump to the selected model. After jumping to the selected model, the parametric design software interface for the throttling device will pop up. In the parametric interface, enter the required parameters in the input parameter area, click "Model" to get the output parameters, and click "Exit" to update the model. Alternatively, enter the required parameters, click "Model," then click "Engineering Drawing," and exit to open the engineering drawing of the corresponding model. Specific notes are provided on the right side.
[0057] Enter all the required parameters in the input parameter frame. Clicking "Model" will bring up a prompt interface. At the same time, the specific structural parameters will be output in the output parameter frame. Enter the drag coefficient as 1350, the eccentricity as 0.3, the heat exchange tube diameter as 10, and select stainless steel 304 as the material. Click "Model Output Parameters," enter the drag coefficient as 1350, the eccentricity as 0.3, the heat exchange tube diameter as 10, and select stainless steel 304 as the material. Then click the "Assembly" and "Exit" buttons to generate the 3D model.
[0058] Enter all the necessary parameters in the input parameter frame, click "Model" to bring up a prompt interface, and the specific structural parameters will be output in the output parameter frame. Click "Drawing" to bring up a prompt interface, and then click "Exit" to generate the drawing. Input the drag coefficient as 1300, the eccentricity as 0.3, the heat exchange tube diameter as 10, and select stainless steel 304 as the material. Click "Drawing" to output the results.
[0059] After the initial generation of the 3D model or engineering drawing, the parameterization interface for the throttling device will disappear. To change the parameters again, click "Management—ilogic—itrigger" to bring up the parameterization interface again and modify the parameters. Note that the engineering drawing only needs to be generated once. After modifying the parameters and remodeling the 3D model, the engineering drawing will update simultaneously with the 3D model.
[0060] Example of modification: Input the resistance coefficient as 1500, the eccentricity as 0.5, the heat exchanger tube diameter as 10, and the material as stainless steel 304. Click "Modeling" to output parameters. Input the resistance coefficient as 1500, the eccentricity as 0.5, the heat exchanger tube diameter as 10, and the material as stainless steel 304. Then click "Assembly" and "Exit" to generate a 3D model. Input the resistance coefficient as 1500, the eccentricity as 0.5, the heat exchanger tube diameter as 10, and the material as stainless steel 304. Click "Engineering Drawing" to output the results.
[0061] Example of modification: Changing the heat exchanger tube diameter changes the scaling factor of the overall structural parameters. The initial value is 10, and the scaling factor is the input value of the heat exchanger tube diameter / 10. The input resistance coefficient is 1500, the eccentricity is 0.5, the heat exchanger tube diameter is 10, and the material is selected as stainless steel 304. Click "Modeling," then "Assembly," then "Manage—ilogic—itrigger" to bring up the throttling device parameterization interface again. Change the heat exchanger tube diameter to 15, click "Modeling," and then click "Manage—ilogic—itrigger" within the assembly to update the assembly model.
[0062] After generating the required 3D model and engineering drawings, to save them, click "File – Save As – Save Copy As" and save the required 3D model and engineering drawings as ".ipt", ".iam", ".dwg" or ".step" format files. If you click save directly, a window will pop up saying that it cannot be saved.
[0063] This invention is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this invention. However, regardless of any changes made in their shape or structure, any technical solution that falls within the scope of the claims of this invention shall be protected by this invention.
Claims
1. A steam generator throttle parameterized design platform, characterized in that, include: The 3D parametric modeling module includes pre-built parametric templates for multiple types of throttling devices, and the main parameters of the templates are associated with the features of the 3D model through rules. The drag coefficient correlation calculation module is used to calculate and output the throttling device structure parameters that drive the three-dimensional parametric modeling module based on the input target drag coefficient, combined with the preset drag coefficient correlation model and turbulence model correction. An automated drawing module is used to automatically generate 2D engineering drawings, including dimensional tolerances and technical requirements, based on the generated 3D model and by calling pre-stored nuclear power-specific engineering drawing templates; and The design knowledge base and data management module includes a database storing historical design cases and provides a case matching and parameter reuse mechanism based on resistance coefficient similarity.
2. The steam generator throttle parameterization design platform of claim 1, wherein, The various types of throttling devices include multi-stage eccentric orifice plate throttling devices, gear-type turbulence throttling devices, and T-hole throttling devices; The parameterized template of the multi-stage eccentric orifice plate throttling device defines the number of stages, eccentricity, orifice diameter, and orifice plate spacing, and uses rules to achieve staggered eccentric angles of adjacent orifice plates; the parameterized template of the gear-type throttling device defines the tooth height, tooth width, and number of teeth, and uses rules to achieve automatic matching of tooth width and number of teeth; the parameterized template of the T-hole throttling device defines the horizontal hole diameter, vertical hole diameter, and baffle cutting thickness, and uses Boolean operations to generate the T-hole structure.
3. The steam generator throttle parameterization design platform of claim 1, wherein, The drag coefficient correlation calculation module includes: The fitting model unit stores the drag coefficient correlation models for three types of throttling devices obtained by fitting experimental data; and a turbulence correction unit for correcting the initial drag coefficient output by the fitting model unit using Realizable k ε model and iteratively adjusting model constants until the calculation error meets a preset accuracy requirement.
4. The parameterized design platform for steam generator throttling elements according to claim 3, characterized in that, The Realizable k ε model with model constants set to: C2 = 2.5, σk = 0.7, σε = 0.
8.
5. The steam generator throttle parameterization design platform of claim 1, wherein, The automated drawing module is further used for: Structural parameters are automatically extracted from the three-dimensional parametric modeling module and filled into the title block and detail table of the nuclear power-specific engineering drawing template; Based on preset rules, dimensional tolerances, geometric tolerances, and material, heat treatment, and testing technical requirements that conform to ASME or GB / T standards are automatically added to the engineering drawings.
6. The parameterized design platform for steam generator throttling elements according to claim 1, characterized in that, The design knowledge base and data management module further includes: A similar case matching unit is used to retrieve and return multiple historical cases with the smallest difference in drag coefficient from the database based on the input target drag coefficient. The parameter inheritance unit is used to reuse the structural parameters of the user-selected historical cases in the current design and to adaptively adjust them according to the diameter of the heat exchanger tubes in the current design.
7. A parametric design method for a steam generator throttling element, based on the parametric design platform for steam generator throttling elements as described in any one of claims 1 to 6, characterized in that, Includes the following steps: S1: Obtain the design parameters input by the user, including the target resistance coefficient and the diameter of the heat exchanger tube, and perform a validity verification; S2: Based on the target drag coefficient, the structural parameters of the throttling device are matched and calculated by the drag coefficient correlation calculation module; S3: Call the 3D parametric modeling module to automatically generate a 3D model of the throttling device based on the pre-stored parametric template driven by the structural parameters; S4: Call the automated drawing module to automatically generate two-dimensional engineering drawings that conform to nuclear power specifications based on the three-dimensional model; S5: Link and store the generated 3D model, 2D engineering drawings, and design process data to the design knowledge base and data management module.
8. The parameterized design method for steam generator throttling elements according to claim 7, characterized in that, Step S2 further includes a turbulence model correction sub-step: Calculate the initial drag coefficient based on the fitted model; Call Realizable k The ε model performs a corrected calculation of the initial drag coefficient; If the error between the corrected drag coefficient and the target drag coefficient exceeds the threshold, the turbulence model constants are adjusted, and the correction calculation is performed again until the error meets the requirements.
9. The parameterized design method for steam generator throttling elements according to claim 7, characterized in that, After generating the 3D model in step S3, a machinability verification step is also included: for gear turbulence-type throttling components, it is verified whether the calculated tooth height is less than the minimum machining size. If so, the number of tooth plates is automatically increased and recalculated until the tooth height meets the machinability requirements.
10. The parameterized design method for steam generator throttling elements according to claim 7, characterized in that, Step S5 further includes: automatically generating a design report that includes the drag coefficient calculation process, turbulence model correction results, and compliance check records, and storing it together with the corresponding three-dimensional model and two-dimensional engineering drawings.