Design, manufacturing and calibration integrated method and system for throttling element of steam generator

Abstract

The invention belongs to the technical field of reactor engineering, and discloses a steam generator throttling element designing, manufacturing and calibrating integrated method and system.The method comprises the steps of throttling element structure type selection, specifically, in the wide resistance coefficient range, the throttling element structure type of a target steam generator is determined; structural sensitivity analysis: on the basis of a throttling element structural model selection result, through a computer numerical simulation method, calculating and analyzing an association relationship between specific structural factors and a resistance coefficient of the throttling element, and fitting a corresponding association formula; analyzing the machining precision accessibility of the feature structure: calculating and analyzing the difficulty degree of machining the feature structure of the throttling element to preset precision, and feeding back to the structural sensitivity analysis process for optimization and refinement; and constructing and applying a three-dimensional parameterized model: establishing the three-dimensional parameterized model, performing parameterized design and parameterized solution, and finally outputting the three-dimensional structure and size of the throttling element. According to the invention, the integrated work of design, manufacturing and calibration of the throttling element of the steam generator can be realized.

Description

Technical Field

[0001] The invention relates to the field of reactor engineering technology, and in particular to a method and system for integrating design, manufacture and calibration of a throttling element of a steam generator. Background Art

[0002] In the fourth-generation advanced reactors (sodium-cooled fast reactors, lead-bismuth fast reactors, and high-temperature gas-cooled reactors), many key equipment have a large number of rod bundle channels, such as tubular parallel channels in steam generators and cooling system pipes. During the operation of the reactor, these tubular channels may produce flow instability oscillations due to complex factors such as uneven flow distribution. The inside of the heat exchange tubes of nuclear power direct current steam generators is high-temperature and high-pressure water, which will successively experience the liquid phase, vapor-liquid two-phase and gas phase regions, and two-phase flow instability is prone to occur. The most convenient measure to suppress two-phase flow instability is to install a throttling device at the inlet end of the heat exchange tube.

[0003] At present, the throttling device applicable to steam generator still has the following problems:

[0004] (1) The existing throttling parts for steam generators are complex in design, have a long design process, cumbersome design steps, and backward design methods. They are no longer able to meet the design requirements of throttling parts for steam generators.

[0005] (2) Different nuclear reactor types of steam generators require different resistance coefficients for throttling devices. A throttling device with a single resistance coefficient and a single structure cannot meet the demand, and the design, manufacturing and calibration requirements of the throttling device are high.

[0006] (3) The throttling device is installed at the entrance of the steam generator heat exchange tube. The tube bundle is complex and the space is narrow. High-temperature and high-pressure liquid water runs inside. The working environment is harsh and the manufacturing requirements of the throttling device are high. There are many errors such as dimensional tolerance and processing error in the design and manufacturing process of the throttling device. The complex throttling device structure makes the throttling device difficult to process and requires high precision.

[0007] (4) The throttling parts are manufactured in large quantities, and the resistance coefficient distribution presents a normal distribution. Therefore, it is necessary to conduct large-scale calibration tests on a large number of throttling parts under steam generator operating conditions.

[0008] (5) The design, manufacturing, processing and calibration of traditional throttling parts are complicated and the steps are cumbersome, which seriously affects the design and manufacturing efficiency of the steam generator. Summary of the invention

[0009] In order to solve the above problems, the present invention proposes an integrated method and system for designing, manufacturing and calibrating a throttling device for a steam generator, which can achieve fast throttling device design speed, short design process, simple structure, high processing precision, long-term operation stability, tolerance to harsh working environment, and sufficient resistance coefficient to suppress two-phase flow instability. The resistance coefficient can be adjusted, thereby ensuring the safe and reliable operation of nuclear power.

[0010] The technical solution adopted by the present invention is as follows:

[0011] A method for integrating design, manufacturing and calibration of a throttling element of a steam generator, comprising:

[0012] Selection of throttling device structure: Determine the throttling device structure type of the target steam generator within a wide range of resistance coefficients;

[0013] Structural sensitivity analysis: Based on the results of throttling component structure selection, the correlation between the specific structural factors of the throttling component and the resistance coefficient is calculated and analyzed through computer numerical simulation methods, and the corresponding correlation formula is fitted;

[0014] Feature structure machining accuracy accessibility analysis: Based on the throttling component structure selection and structural sensitivity analysis results, the difficulty of machining the feature structure of the throttling component to the preset accuracy is calculated and analyzed, and then fed back to the structural sensitivity analysis process for optimization and refinement;

[0015] Construction and application of three-dimensional parametric model: Based on the selection of throttling component structure, structural sensitivity analysis and characteristic structure processing accuracy reachability analysis results, a three-dimensional parametric model is established and parametric design and parametric solution are performed, and finally the three-dimensional structure and size of the throttling component are output.

[0016] Furthermore, in the structural sensitivity analysis, based on the throttling element structure selection result, the correlation between the specific structural factors of the throttling element and the resistance coefficient is calculated and analyzed by computer numerical simulation method, including:

[0017] Through computer numerical simulation method, a refined structural model of the throttling device is established, the flow field of the throttling device is analyzed, and the resistance coefficient of the throttling device under different parameter structures is determined.

[0018] Furthermore, in the construction and application of the three-dimensional parameterized model, the input of the three-dimensional parameterized model includes the structural type of the throttling device, the resistance coefficient and the space requirement, and the output is the three-dimensional structure and size of the throttling device.

[0019] Furthermore, the integrated method for designing, manufacturing and calibrating the throttling device of the steam generator also includes a throttling device resistance coefficient measurement test: the throttling device resistance coefficient measurement test is carried out through a movable hydrodynamic test bench, and the feedback is fed back to the throttling device structure selection, structural sensitivity analysis and characteristic structure processing accuracy accessibility analysis process for optimization.

[0020] Furthermore, in the throttling device drag coefficient measurement test, the throttling device drag coefficient measurement test is carried out by a movable hydrodynamic test bench, and the feedback is fed back to the throttling device structure selection, structure sensitivity analysis and characteristic structure processing accuracy accessibility analysis process for optimization, including:

[0021] According to the test results of the drag coefficient of the throttling piece, the corresponding relationship between the structural geometric characteristic parameters of the actual throttling piece and the drag coefficient is fitted, and the test data is used to correct the throttling piece structure design, flow field analysis and three-dimensional parameterized model.

[0022] A steam generator throttling element design, manufacturing and calibration integrated system, comprising:

[0023] A throttling device structure selection module is configured to determine a throttling device structure type of a target steam generator within a wide resistance coefficient range;

[0024] The structural sensitivity analysis is configured to calculate and analyze the correlation between the specific structural factors of the throttling device and the resistance coefficient based on the throttling device structure selection results, and fit the corresponding correlation formula through computer numerical simulation methods;

[0025] Characteristic structure machining accuracy reachability analysis is configured to calculate and analyze the difficulty of machining the characteristic structure of the throttling component to the preset accuracy based on the throttling component structure selection and structural sensitivity analysis results, and feed back to the structural sensitivity analysis process for optimization and refinement;

[0026] The construction and application of the three-dimensional parametric model is configured to establish a three-dimensional parametric model and perform parametric design and parametric solution based on the throttling component structure selection, structural sensitivity analysis and characteristic structure processing accuracy reachability analysis results, and finally output the three-dimensional structure and size of the throttling component.

[0027] Furthermore, in the structural sensitivity analysis module, based on the throttling component structure selection result, the correlation between the specific structural factors of the throttling component and the resistance coefficient is calculated and analyzed by a computer numerical simulation method, including:

[0028] Through computer numerical simulation method, a refined structural model of the throttling device is established, the flow field of the throttling device is analyzed, and the resistance coefficient of the throttling device under different parameter structures is determined.

[0029] Furthermore, in the three-dimensional parameterized model construction and application module, the input of the three-dimensional parameterized model includes the throttling device structure type, resistance coefficient and space requirement, and the output is the three-dimensional structure and size of the throttling device.

[0030] Furthermore, the integrated system for designing, manufacturing and calibrating the throttling device of the steam generator also includes a throttling device resistance coefficient measurement test module, which is configured to perform a throttling device resistance coefficient measurement test through a movable hydrodynamic test bench, and provide feedback to the throttling device structure selection, structural sensitivity analysis and characteristic structure processing accuracy accessibility analysis process for optimization.

[0031] Furthermore, in the throttle resistance coefficient measurement test module, a throttle resistance coefficient measurement test is performed through a movable hydrodynamic test bench, and the feedback is fed back to the throttle structure selection, structure sensitivity analysis and characteristic structure processing accuracy accessibility analysis process for optimization, including:

[0032] According to the test results of the drag coefficient of the throttling piece, the corresponding relationship between the structural geometric characteristic parameters of the actual throttling piece and the drag coefficient is fitted, and the test data is used to correct the throttling piece structure design, flow field analysis and three-dimensional parameterized model.

[0033] The beneficial effects of the present invention are:

[0034] (1) The present invention is based on parametric design, and key structural parameters can be added in the design. By modifying the parameters, the design can be flexibly adjusted to achieve standardization of the throttling element design.

[0035] (2) The present invention specifically changes the structural parameters of the throttle to adjust the resistance coefficient of the throttle. The sensitivity analysis of the throttle structure is performed to fit the corresponding relationship. The specific accuracy requirements of the throttle structure are clarified to better fit the actual manufacturing plan and improve the feasibility of throttle manufacturing.

[0036] (3) The present invention can realize the process connection and automatic operation from parametric design, parametric modeling, parametric solution, and parametric drawing, greatly shortening the design and manufacturing process and improving efficiency.

[0037] (4) The present invention can realize the integrated work of designing, manufacturing and calibrating the throttling device of the steam generator, which reduces the time spent by half compared with the traditional design scheme and saves a lot of economic costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a flow chart of an integrated method for designing, manufacturing and calibrating a throttling device for a steam generator according to Example 1 of the present invention.

[0039] Figure 2 It is a flow chart of the three-dimensional parameterized design scheme of the throttling device in Example 1 of the present invention.

[0040] Figure 3 It is a schematic diagram of the T-shaped hole structure of Example 1 of the present invention.

[0041] Figure 4It is a flow chart of the method for studying the correspondence between the structural parameters of the throttling device and the resistance coefficient in Example 1 of the present invention.

[0042] Figure 5 It is a curve diagram of the resistance coefficient of Example 1 of the present invention changing with the aperture of the T-shaped transverse hole.

[0043] Figure 6 This is a diagram of the interface of the three-dimensional parametric design software for the throttling device of Example 1 of the present invention.

[0044] Figure 7 It is a flow chart of the feedback mechanism of the throttling element resistance coefficient test in Example 1 of the present invention. DETAILED DESCRIPTION

[0045] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0046] Example 1

[0047] In the existing design and manufacturing of steam generator throttling parts, there are many problems such as complex design process, unclear processing and manufacturing accuracy, and heavy calibration test tasks. Based on this, this embodiment provides a steam generator throttling part design, manufacturing and calibration integrated method, such as Figure 1 As shown, including:

[0048] Selection of throttling device structure: Determine the throttling device structure type of the target steam generator within a wide range of resistance coefficients;

[0049] Structural sensitivity analysis: Based on the results of throttling component structure selection, the correlation between the specific structural factors of the throttling component and the resistance coefficient is calculated and analyzed through computer numerical simulation methods, and the corresponding correlation formula is fitted;

[0050] Feature structure machining accuracy accessibility analysis: Based on the throttling component structure selection and structural sensitivity analysis results, the difficulty of machining the feature structure of the throttling component to the preset accuracy is calculated and analyzed, and then fed back to the structural sensitivity analysis process for optimization and refinement;

[0051] Construction and application of three-dimensional parametric model: Based on the selection of throttling component structure, structural sensitivity analysis and characteristic structure processing accuracy reachability analysis results, a three-dimensional parametric model is established and parametric design and parametric solution are performed, and finally the three-dimensional structure and size of the throttling component are output.

[0052] Preferably, in the structural sensitivity analysis, a computer numerical simulation method can be used to establish a refined structural model of the throttling device, analyze the flow field of the throttling device, and determine the resistance coefficient of the throttling device under different parameter structures.

[0053] Preferably, in the construction and application of the three-dimensional parametric model, the input of the three-dimensional parametric model includes the structural type of the throttling device, the resistance coefficient and the space requirement, and the output is the three-dimensional structure and size of the throttling device.

[0054] Preferably, the integrated method for designing, manufacturing and calibrating the throttling device of the steam generator of this embodiment also includes a throttling device resistance coefficient measurement test: the throttling device resistance coefficient measurement test is carried out through a movable hydrodynamic test bench, and the feedback is fed back to the throttling device structure selection, structural sensitivity analysis and characteristic structure processing accuracy accessibility analysis process for optimization.

[0055] More preferably, in the throttling device drag coefficient measurement test, the corresponding relationship between the structural geometric characteristic parameters of the actual throttling device and the drag coefficient can be fitted according to the throttling device drag coefficient measurement test results, and the throttling device structural design, flow field analysis and three-dimensional parameterized model can be corrected using the test data.

[0056] Specifically, if Figure 2 As shown, the integrated method for designing, manufacturing and calibrating the throttling device of the steam generator of this embodiment can be implemented based on the following contents.

[0057] The steam generator throttling device needs to have clear design requirements. The throttling device design should meet the performance parameters of hot conditions (the inlet temperature of the heat exchange tube of the secondary steam generator of the sodium-cooled fast reactor, the lead-bismuth fast reactor, and the high-temperature gas-cooled reactor are 210℃, 340℃, and 205℃ respectively); the throttling device should meet the requirements of the resistance coefficient and processing accessibility. The throttling device type, resistance coefficient, and space requirements are used as input, and the throttling device three-dimensional structure and size are used as output.

[0058] The selection of steam generator throttling device structure is to first evaluate and study various existing throttling device structures, and then combine multidisciplinary knowledge to design a new throttling device structure, such as Figure 3 As shown. Finally, the throttling device structure is determined by the dimensionless quantity of the resistance coefficient. The following are the requirements for selecting the throttling device structure:

[0059] ① Determine the structural type of throttling device with a wide resistance coefficient range;

[0060] ② The selected throttling parts can be mass-produced, with low cost and easy to ensure accuracy;

[0061] ③It takes up little space and can be placed at the entrance of the heat exchange tube.

[0062] The sensitivity analysis of the steam generator throttling device structure and resistance coefficient is carried out by using computer numerical simulation methods to establish a refined model of the structural parts, analyze the throttling device flow field, and determine the resistance coefficient of the throttling device under different parameter structures. Establish a throttling device three-dimensional model, divide the grid, verify the grid independence, perform numerical simulation, refine the three-dimensional flow field analysis, and analyze the corresponding relationship. Figure 4 The specific process is as follows:

[0063] (1) Structural selection

[0064] The T-hole throttling piece is made of 304 stainless steel bar machine. Two T-holes are opened on the left and right end faces of the stainless steel bar, and then the outer surface of the bar is cut to form a baffle. After cutting away the fan-shaped material on the baffle, a complete flow channel for fluid throttling is formed.

[0065] (2) Flow field analysis

[0066] After the fluid passes through the first T-shaped hole, the fluid undergoes a throttling effect, the fluid accelerates, and enters the cavity. In the cavity, the fluid hits the wall and develops to a certain extent. After passing through the circular orifice plate for another throttling, it enters the next level of T-shaped hole, generating a swirl flow, extremely strong shear force and turbulence.

[0067] (3) Structural parameters and resistance coefficient fitting

[0068] like Figure 5 As shown in the figure, the drag coefficient gradually increases with the diameter of the T-shaped cross hole. The diameter of the T-shaped cross hole ranges from 3.0mm to 2mm, and the drag coefficient can be changed from 1400 to 1920. The design goal of a wide drag coefficient can be achieved by fitting the structural parameters and the drag coefficient change curve.

[0069] Research on the achievable machining accuracy of the characteristic structure of the steam generator throttling part. For the selected throttling part structure, the ultimate dimensional accuracy that can be achieved by the characteristic dimensions is studied; for the selected throttling part structure, based on the research results of advanced manufacturing processes, the achievable dimensional machining accuracy under the characteristic structure is determined, and the achievable accuracy index under the typical structure is established to provide support for the design of the throttling part. The developed advanced manufacturing process plan is practical and can be directly used for the manufacture of throttling part test pieces; the developed advanced manufacturing process plan should meet the requirements of large-scale stable quality, short cycle and controllable cost;

[0070] like Figure 6As shown, write parametric design software. According to the needs of the project business process, develop a full-process automation system to realize the process connection and automatic operation of various functional modules including parametric design, parametric modeling, parametric solution, and parametric drawing. This embodiment uses VBA (Visual Basic for Application) to develop automatic modeling software for multi-stage orifice throttling parts, and establishes a visual interface in the software. In the visual interface, the user can input the required resistance coefficient and number of orifices of the required multi-stage orifice throttling parts according to the needs. After determining the required parameters, click the modeling button to automatically generate the required multi-stage orifice throttling parts model. The software runs fast and can quickly and correctly output three-dimensional models and two-dimensional engineering drawings according to the input parameters. The throttling part parametric software provides an intuitive, concise and easy-to-operate user interface, allowing users to easily input design requirements, view results and interact.

[0071] Design and build a mobile hydrodynamic test bench for steam generator throttling parts, carry out throttling parts resistance coefficient calibration test, and establish a feedback mechanism, such as Figure 7 As shown. According to the throttling device calibration test results, the corresponding relationship between the structural geometric characteristic parameters of the actual throttling device and the resistance coefficient is fitted, and the experimental data is used to correct the design, flow field analysis, and three-dimensional parameterization software of the throttling device design module. Based on the test results, feedback correction suggestions are given to the design, manufacturing, and software development to complete the correction of the throttling device design, manufacturing, and software development.

[0072] Example 2

[0073] This embodiment provides a steam generator throttling device design, manufacturing and calibration integrated system, including:

[0074] A throttling device structure selection module is configured to determine a throttling device structure type of a target steam generator within a wide resistance coefficient range;

[0075] The structural sensitivity analysis is configured to calculate and analyze the correlation between the specific structural factors of the throttling device and the resistance coefficient based on the throttling device structure selection results, and fit the corresponding correlation formula through computer numerical simulation methods;

[0076] Characteristic structure machining accuracy reachability analysis is configured to calculate and analyze the difficulty of machining the characteristic structure of the throttling component to the preset accuracy based on the throttling component structure selection and structural sensitivity analysis results, and feed back to the structural sensitivity analysis process for optimization and refinement;

[0077] The construction and application of the three-dimensional parametric model is configured to establish a three-dimensional parametric model and perform parametric design and parametric solution based on the throttling component structure selection, structural sensitivity analysis and characteristic structure processing accuracy reachability analysis results, and finally output the three-dimensional structure and size of the throttling component.

[0078] Preferably, in the structural sensitivity analysis module, based on the throttling component structure selection result, the correlation between the specific structural factors of the throttling component and the resistance coefficient is calculated and analyzed by a computer numerical simulation method, including:

[0079] Through computer numerical simulation method, a refined structural model of the throttling device is established, the flow field of the throttling device is analyzed, and the resistance coefficient of the throttling device under different parameter structures is determined.

[0080] Preferably, in the three-dimensional parametric model construction and application module, the input of the three-dimensional parametric model includes the throttling device structure type, resistance coefficient and space requirement, and the output is the three-dimensional structure and size of the throttling device.

[0081] Preferably, it also includes a throttling device resistance coefficient measurement test module, which is configured to perform a throttling device resistance coefficient measurement test through a movable hydrodynamic test bench, and provide feedback to the throttling device structure selection, structural sensitivity analysis, and characteristic structure processing accuracy accessibility analysis process for optimization.

[0082] Preferably, in the throttling component drag coefficient measurement test module, the throttling component drag coefficient measurement test is carried out by a movable hydrodynamic test bench, and the feedback is fed back to the throttling component structure selection, structural sensitivity analysis and characteristic structure processing accuracy accessibility analysis process for optimization, including:

[0083] According to the test results of the drag coefficient of the throttling piece, the corresponding relationship between the structural geometric characteristic parameters of the actual throttling piece and the drag coefficient is fitted, and the test data is used to correct the throttling piece structure design, flow field analysis and three-dimensional parameterized model.

[0084] Example 3

[0085] This embodiment is based on embodiment 1:

[0086] This embodiment provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the integrated method for designing, manufacturing and calibrating a throttling device of a steam generator of Embodiment 1 is implemented. The computer program may be in source code form, object code form, executable file or some intermediate form.

[0087] Example 4

[0088] This embodiment is based on embodiment 1:

[0089] This embodiment provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the integrated method for designing, manufacturing and calibrating a throttling device for a steam generator in Embodiment 1. The computer program may be in source code form, object code form, executable file or some intermediate form, etc. The storage medium includes: any entity or device capable of carrying computer program code, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the storage medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the storage medium does not include electric carrier signals and telecommunication signals.

[0090] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity of description, they are expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

Claims

1. A method for designing, manufacturing and calibrating a steam generator throttling device, characterized in that: include: Selection of throttling device structure: Determine the throttling device structure type of the target steam generator within a wide range of resistance coefficients; Structural sensitivity analysis: Based on the results of throttling component structure selection, the correlation between the specific structural factors of the throttling component and the resistance coefficient is calculated and analyzed through computer numerical simulation methods, and the corresponding correlation formula is fitted; Feature structure machining accuracy accessibility analysis: Based on the throttling component structure selection and structural sensitivity analysis results, the difficulty of machining the feature structure of the throttling component to the preset accuracy is calculated and analyzed, and then fed back to the structural sensitivity analysis process for optimization and refinement; Construction and application of three-dimensional parametric model: Based on the selection of throttling component structure, structural sensitivity analysis and characteristic structure processing accuracy reachability analysis results, a three-dimensional parametric model is established and parametric design and parametric solution are performed, and finally the three-dimensional structure and size of the throttling component are output.

2. A method for integrating design, manufacture and calibration of a throttling device for a steam generator according to claim 1, characterized in that: In the structural sensitivity analysis, based on the throttling component structure selection results, the correlation between the specific structural factors of the throttling component and the resistance coefficient is calculated and analyzed by computer numerical simulation method, including: Through computer numerical simulation method, a refined structural model of the throttling device is established, the flow field of the throttling device is analyzed, and the resistance coefficient of the throttling device under different parameter structures is determined.

3. A method for integrating design, manufacture and calibration of a throttling device for a steam generator according to claim 1, characterized in that: In the construction and application of the three-dimensional parameterized model, the input of the three-dimensional parameterized model includes the structural type of the throttling device, the resistance coefficient and the space requirement, and the output is the three-dimensional structure and size of the throttling device.

4. A method for integrating design, manufacture and calibration of a steam generator throttling device according to claim 1, characterized in that: It also includes the throttling device resistance coefficient measurement test: the throttling device resistance coefficient measurement test is carried out through a movable hydrodynamic test bench, and the feedback is fed back to the throttling device structure selection, structural sensitivity analysis and characteristic structure processing accuracy accessibility analysis process for optimization.

5. A method for integrating design, manufacture and calibration of a throttling device for a steam generator according to claim 4, characterized in that: In the throttling component drag coefficient measurement test, the throttling component drag coefficient measurement test is carried out through a movable hydrodynamic test bench, and the feedback is fed back to the throttling component structure selection, structural sensitivity analysis and characteristic structure processing accuracy accessibility analysis process for optimization, including: According to the test results of the drag coefficient of the throttling piece, the corresponding relationship between the structural geometric characteristic parameters of the actual throttling piece and the drag coefficient is fitted, and the test data is used to correct the throttling piece structure design, flow field analysis and three-dimensional parameterized model.

6. A steam generator throttling device design, manufacturing and calibration integrated system, characterized in that: include: A throttling device structure selection module is configured to determine a throttling device structure type of a target steam generator within a wide resistance coefficient range; The structural sensitivity analysis is configured to calculate and analyze the correlation between the specific structural factors of the throttling device and the resistance coefficient based on the throttling device structure selection results, and fit the corresponding correlation formula through computer numerical simulation methods; Characteristic structure machining accuracy reachability analysis is configured to calculate and analyze the difficulty of machining the characteristic structure of the throttling component to the preset accuracy based on the throttling component structure selection and structural sensitivity analysis results, and feed back to the structural sensitivity analysis process for optimization and refinement; The construction and application of the three-dimensional parametric model is configured to establish a three-dimensional parametric model and perform parametric design and parametric solution based on the throttling component structure selection, structural sensitivity analysis and characteristic structure processing accuracy reachability analysis results, and finally output the three-dimensional structure and size of the throttling component.

7. The integrated system for designing, manufacturing and calibrating a throttling device for a steam generator according to claim 6, characterized in that: In the structural sensitivity analysis module, based on the throttling component structure selection result, the correlation between the specific structural factors of the throttling component and the resistance coefficient is calculated and analyzed by computer numerical simulation method, including: Through computer numerical simulation method, a refined structural model of the throttling device is established, the flow field of the throttling device is analyzed, and the resistance coefficient of the throttling device under different parameter structures is determined.

8. The integrated system for designing, manufacturing and calibrating a throttling device for a steam generator according to claim 6, characterized in that: In the three-dimensional parameterized model construction and application module, the input of the three-dimensional parameterized model includes the throttling component structure type, resistance coefficient and space requirement, and the output is the three-dimensional structure and size of the throttling component.

9. The integrated system for designing, manufacturing and calibrating a throttling device for a steam generator according to claim 6, characterized in that: It also includes a throttling device drag coefficient measurement test module, which is configured to perform a throttling device drag coefficient measurement test through a movable hydrodynamic test bench, and provide feedback to the throttling device structure selection, structural sensitivity analysis, and characteristic structure processing accuracy accessibility analysis process for optimization.

10. The integrated system for designing, manufacturing and calibrating a throttling device for a steam generator according to claim 9, characterized in that: In the throttle resistance coefficient measurement test module, the throttle resistance coefficient measurement test is carried out through a movable hydrodynamic test bench, and the feedback is fed back to the throttle structure selection, structure sensitivity analysis and characteristic structure processing accuracy accessibility analysis process for optimization, including: According to the test results of the drag coefficient of the throttling piece, the corresponding relationship between the structural geometric characteristic parameters of the actual throttling piece and the drag coefficient is fitted, and the test data is used to correct the throttling piece structure design, flow field analysis and three-dimensional parameterized model.

Images