Method for calculating thickness of non-standard flange under super-high pressure working condition and device thereof

Abstract

The application provides a calculation method and device for thickness of a non-standard flange under an ultrahigh pressure condition, wherein the method comprises the following steps: determining an initial thickness of a target flange according to a drift diameter of the target flange and an actual working condition applied by the target flange; simulating stress distribution of the target flange under the actual working condition by using a simulation technology; identifying an abnormal stress area in the stress distribution based on the initial thickness, wherein an actual stress value of the abnormal stress area exceeds a preset safety threshold; adjusting the thickness of the target flange in the abnormal stress area according to the actual stress value of the abnormal stress area and a mapping relationship between stress values and thicknesses; and determining a structure parameter of the target flange according to the adjusted thickness. The calculation method and device for thickness of a non-standard flange under an ultrahigh pressure condition provided by the application can prolong the service life of the non-standard flange under the ultrahigh pressure condition, improve safety, reduce the use of materials, and reduce production costs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flange size calculation, and particularly relates to a calculation method and device for thickness of a non-standard flange under super-high pressure working conditions. BACKGROUND

[0002] In the oil and gas industry, API 6A (Specification for Wellhead and Christmas Tree Equipment) and GB / T 22513 Petroleum and Natural Gas Industries Drilling and Production Equipment Wellhead and Christmas Tree are common flange standards. In these standards, standardized designs of various sizes and pressure classes are provided to meet the needs of most application scenarios. However, when the flange working pressure reaches 120 MPa or more, the current standard series cannot meet the design requirements of the flange under super-high pressure application because the working pressure exceeds the maximum pressure class in the flange standard. Therefore, it is necessary to design a non-standard size flange under super-high pressure working conditions to adapt to the application scenario of super-high pressure.

[0003] In the prior art, when designing a non-standard flange thickness for a specific super-high pressure requirement (i.e., a non-standard pressure greater than 120 MPa), the design is based on the existing general standard. The specific steps are as follows: find the standard pressure class closest to the target pressure class (i.e., the pressure required to be withstood by the flange application environment) in the existing general standard, and check the standard thickness corresponding to the standard pressure class: if the target pressure class is greater than the standard pressure class, appropriately increase the standard thickness; if the target pressure class is less than the standard pressure class, appropriately decrease the standard thickness.

[0004] However, the current method of relying on designer estimation to determine the non-standard flange under super-high pressure working conditions has certain limitations: if the estimated flange thickness is too thin, it will significantly shorten the service life of the flange and may cause leakage or equipment failure, thereby causing serious safety hazards; if the estimated flange thickness is too thick, it will cause material waste and increase production costs. SUMMARY

[0005] The purpose of the embodiments of the present application is to provide a calculation method and device for thickness of a non-standard flange under super-high pressure working conditions, which can prolong the service life of the non-standard flange under super-high pressure working conditions, improve safety, reduce the use of materials, and reduce production costs.

[0006] To solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0007] The embodiment of the application provides a kind of ultra-high pressure condition non-standard flange thickness calculation method, comprising: according to the target flange's drift diameter size and the actual working condition applied to determine the initial thickness of the target flange, the actual working condition is outside the use condition corresponding to current flange design standard;Stress distribution of the target flange in the actual working condition is simulated using simulation technology;Abnormal stress area in the stress distribution is identified based on the initial thickness, and the actual stress value of the abnormal stress area exceeds the preset safety threshold;According to the actual stress value of the abnormal stress area and the mapping relationship between stress value and thickness, the thickness of the target flange in the abnormal stress area is adjusted;The structural parameters of the target flange are determined according to the thickness after adjustment.

[0008] In some embodiments, the initial thickness of the target flange is determined according to the drift diameter size of the target flange and the actual working condition applied, comprising: obtaining a plurality of sets of design parameter data corresponding to the drift diameter size of the target flange in the current flange design standard, wherein each set of design parameter data includes a pressure rating and a flange thickness corresponding to the pressure rating;Curve fitting is performed on a plurality of sets of design parameter data to obtain a first functional relationship between pressure rating and flange thickness;The initial thickness of the target flange is determined according to the first functional relationship and the pressure rating in the actual working condition.

[0009] In some embodiments, the first functional relationship is as follows:

[0010]

[0011] In the formula, represents the pressure rating in the actual working condition;

[0012] represents the initial thickness corresponding to the pressure rating;

[0013] represents the reference pressure rating corresponding to the drift diameter size of the target flange;

[0014] represents the reference thickness corresponding to the reference pressure rating;

[0015] is an amplitude parameter, used to represent the amplitude of the change of flange thickness with pressure rating;

[0016] is a dimensionless scale factor, used to represent the rate of change of flange thickness with pressure rating.

[0017] In some embodiments, the determining the initial thickness of the target flange according to the first function relationship and the pressure level in the actual working condition comprises: correcting the first function relationship based on working condition information of the actual working condition to obtain a second function relationship between the pressure level and the flange thickness; and determining the initial thickness of the target flange according to the pressure level in the actual working condition and the second function relationship.

[0018] In some embodiments, the second function relationship is as follows:

[0019]

[0020] wherein, is a maximum value of pressure fluctuation in the working condition information;

[0021] is a pressure fluctuation factor;

[0022] is an ambient temperature in the working condition information;

[0023] is a temperature factor.

[0024] In some embodiments, the obtaining a plurality of sets of design parameter data corresponding to the nominal diameter size of the target flange in a current flange design standard comprises: obtaining a plurality of sets of design parameter data corresponding to the nominal diameter size of the target flange in each of a plurality of current flange design standards; and performing curve fitting on the plurality of sets of design parameter data to obtain a first function relationship between the pressure level and the flange thickness.

[0025] In some embodiments, the adjusting the thickness of the target flange in the abnormal stress zone according to the actual stress value of the abnormal stress zone and the mapping relationship between the stress value and the thickness comprises: determining a thickness adjustment value of the target flange in the abnormal stress zone according to the actual stress value of the abnormal stress zone and the mapping relationship between the stress value and the thickness; and adjusting the initial thickness according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone.

[0026] In some embodiments, the determining the thickness adjustment value of the target flange in the abnormal stress zone according to the actual stress value of the abnormal stress zone and the mapping relationship between the stress value and the thickness comprises: determining the thickness adjustment value of the target flange in the abnormal stress zone based on a mapping relationship between the stress value and the thickness as follows:

[0027]

[0028] In the formula, This indicates the thickness adjustment value of the target flange in the abnormal stress zone;

[0029] This indicates the actual stress value of the target flange in the abnormal stress zone;

[0030] The preset stress value is the preset safety threshold.

[0031] This is a linear adjustment coefficient, used to indicate the degree to which the flange thickness needs to be increased linearly when the actual stress value exceeds the preset safety threshold;

[0032] This is a non-linear adjustment factor used to represent the square of the stress difference for each additional unit. The flange thickness needs to be increased by the amount of thickness.

[0033] In some embodiments, adjusting the initial thickness according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone includes: updating the thickness distribution of the abnormal stress zone according to a set gradient change rule based on the thickness adjustment value, so that the thickness of the abnormal stress zone smoothly and continuously transitions from the initial thickness to the target thickness; wherein, the calculation formula for the target thickness is:

[0034]

[0035] In the formula, The target thickness;

[0036] This indicates the initial thickness;

[0037] This indicates the thickness adjustment value.

[0038] In some embodiments, adjusting the initial thickness according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone includes: adjusting the initial thickness according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone when the thickness adjustment value is less than or equal to a maximum allowable value of the absolute value of the thickness difference between the abnormal stress zone and the adjacent region, wherein the adjacent region is the region of the target flange adjacent to the abnormal stress zone; and adjusting the thickness of the abnormal stress zone and the thickness of the adjacent region when the thickness adjustment value is greater than the maximum allowable value, to ensure that the difference between the adjusted thickness of the abnormal stress zone and the adjusted thickness of the adjacent region is less than the maximum allowable value.

[0039] This application embodiment also provides a calculation device for the thickness of a non-standard flange under ultra-high pressure conditions, comprising: a measurement determination unit, used to determine the initial thickness of the target flange based on the nominal diameter of the target flange and the actual operating conditions of the application, wherein the actual operating conditions are outside the operating conditions corresponding to the current flange design standard; a simulation unit, used to simulate the stress distribution of the target flange under the actual operating conditions using simulation technology; a stress identification unit, used to identify abnormal stress zones in the stress distribution based on the initial thickness, wherein the actual stress value of the abnormal stress zone exceeds a preset safety threshold; a thickness adjustment unit, used to adjust the thickness of the target flange in the abnormal stress zone according to the mapping relationship between stress value and thickness; and a structure determination unit, used to determine the structural parameters of the target flange based on the adjusted thickness.

[0040] This application also provides a computer device, including a memory, a processor, and a computer program stored in the memory. The processor executes the computer program to implement the steps of the method for calculating the thickness of non-standard flanges under ultra-high pressure conditions as described in any of the above embodiments.

[0041] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the method for calculating the thickness of non-standard flanges under ultra-high pressure conditions as described in any of the above embodiments.

[0042] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the method for calculating the thickness of non-standard flanges under ultra-high pressure conditions as described in any of the above embodiments.

[0043] The method and apparatus for calculating the thickness of non-standard flanges under ultra-high pressure conditions provided in this application determine the initial thickness based on the target flange's nominal diameter and actual operating conditions. This effectively addresses operating conditions exceeding current flange design standards and meets the needs of special application scenarios. Simulation technology is used to model the stress distribution of the target flange under actual operating conditions, comprehensively and accurately reflecting the stress state of the target flange in operation, providing reliable data support for subsequent thickness optimization. Based on the initial thickness, abnormal stress zones (i.e., areas where the actual stress value exceeds a preset safety threshold) are identified in the stress distribution, enabling rapid location of weak points in the flange design and providing a basis for targeted optimization. According to the mapping relationship between stress value and thickness, the thickness of abnormal stress zones is dynamically adjusted to ensure uniform and reasonable stress distribution in all areas of the flange, avoiding the risk of failure caused by localized stress concentration. Targeted adjustment of the thickness in these areas improves the accuracy of flange design, ensuring the safety and reliability of the overall flange structure. Determining the final flange structure through the adjusted thickness ensures flange strength and reliability while avoiding over-design, reducing material waste, and lowering production costs. The calculation method and apparatus for non-standard flange thickness under ultra-high pressure conditions presented in this application effectively solve the safety hazards and resource waste problems existing in traditional design methods. It not only improves the accuracy of flange design, but is also applicable to the design of non-standard flanges under high pressure conditions above 120MPa, thereby improving the safety and economy of industrial equipment under extreme ultra-high pressure working conditions. Attached Figure Description

[0044] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0045] Figure 1 A flowchart illustrating a method for calculating the thickness of a non-standard flange under ultra-high pressure conditions, provided by an embodiment of the present invention, is shown.

[0046] Figure 2 The diagram shows a structural block diagram of a device for calculating the thickness of non-standard flanges under ultra-high pressure conditions, provided by an embodiment of the present invention. Detailed Implementation

[0047] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0048] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0049] like Figure 1 As shown in the figure, this application provides a method for calculating the thickness of a non-standard flange under ultra-high pressure conditions, including:

[0050] S101. Determine the initial thickness of the target flange based on the nominal diameter of the target flange and the actual working conditions of the application, wherein the actual working conditions are outside the operating conditions corresponding to the current flange design standard.

[0051] Specifically, the nominal diameter of the target flange determines the basic dimensions and connection method of the flange. The nominal diameter of the target flange can be determined based on the nominal diameter of the pipeline in the actual working conditions, and it must be ensured that it matches the nominal diameter of the pipeline in the actual working conditions to ensure a seamless connection between the target flange and the pipeline, and to ensure the performance and safety of the entire pipeline system.

[0052] Actual operating condition information can be obtained from the project requirements document. This information may include the target pressure rating (the pressure the flange must withstand in its application environment), the maximum pressure fluctuation, ambient temperature, media type (e.g., water, oil, gas), and the flange's installation location (e.g., ground, underground, seabed, or high altitude). Actual operating conditions may exceed the application conditions corresponding to the current flange design standard. For example, the target pressure rating may be greater than the maximum pressure rating in the flange design standard to meet ultra-high pressure environment applications, such as in deep-sea oil and gas extraction where the flange needs to withstand extremely high working pressures. Alternatively, the target pressure rating may be less than the maximum pressure rating in the flange design standard to meet low-pressure environment applications, such as in some low-pressure gas transmission systems where flange design needs to consider economy and material conservation.

[0053] In some embodiments, determining the initial thickness of the target flange based on its nominal diameter and the actual operating conditions includes: acquiring multiple sets of design parameter data corresponding to the nominal diameter of the target flange in the current flange design standard, each set of design parameter data including a pressure rating and the flange thickness corresponding to that pressure rating; performing curve fitting on the multiple sets of design parameter data to establish a first functional relationship E between the pressure rating and the flange thickness:

[0054]

[0055] In the formula, This indicates the pressure level under the actual operating conditions;

[0056] This indicates the initial thickness corresponding to the pressure level;

[0057] This indicates the reference pressure rating corresponding to the nominal diameter of the target flange;

[0058] This indicates the reference thickness corresponding to the reference pressure level;

[0059] This is an amplitude parameter used to represent the magnitude of change in flange thickness with pressure rating;

[0060] It is a dimensionless scaling factor used to represent the rate at which flange thickness changes with pressure rating;

[0061] The initial thickness is determined based on the first functional relationship E and the pressure level in the actual working conditions.

[0062] Specifically, within current flange design standards (such as API 6A or GB / T 22513), a standard can be selected to find multiple pressure ratings for the target flange's corresponding nominal diameter, and the flange thickness corresponding to each pressure rating can be collected. Using the fitted mathematical function E, the initial thickness at the actual pressure rating can be calculated quickly, accurately, and conveniently. This accurate initial thickness calculation method improves the efficiency of subsequent optimization. The number of design parameter data can be selected based on actual needs and feasibility.

[0063] Comprehensive coverage: It can encompass all possible pressure ratings for this nozzle size, ensuring that the design results not only comply with standards and specifications but also have good adaptability and reliability.

[0064] Typical samples: Several typical pressure level points can be selected for analysis to reduce computational complexity and improve efficiency.

[0065] In some embodiments, the design parameter data includes at least five sets. For example, five, six, or more sets of data points can be selected. By collecting flange thickness data under at least five pressure levels, the relationship between flange thickness and pressure level can be described and understood more accurately, constructing a more precise mathematical function E, thereby guiding the design calculation of flange thickness under different pressure levels, effectively improving design efficiency and ensuring the accuracy of the initial thickness. When performing stress simulation analysis based on the initial thickness, stress concentration areas can be identified more quickly, allowing for targeted adjustments and improving optimization efficiency.

[0066] The API 6A standard series provides data for six pressure ratings and corresponding flange thicknesses for a specific nozzle diameter. These six pressure ratings are 2000 psi, 3000 psi, 5000 psi, 1000 psi, 15000 psi, and 20000 psi, along with their corresponding flange thicknesses. By selecting these six typical pressure rating data points, precise thickness calculations can be performed for target pressure ratings ranging from 1500 psi to 30000 psi (inclusive). This ensures that the initial thickness closely approximates the optimized thickness, laying a solid foundation for subsequent thickness optimization and significantly improving the efficiency of the optimization process. Furthermore, it covers the pressure requirements of most practical applications, ensuring the design results have good adaptability and versatility.

[0067] Alternatively, data from the five pressure levels closest to the target pressure level can be obtained, along with the corresponding flange thickness data for each of these five levels. For example, when the target pressure level is 25,000 psi, the five nearest pressure levels to 25,000 psi (3,000 psi, 5,000 psi, 10,000 psi, 15,000 psi, and 20,000 psi) and their corresponding flange thickness data can be selected; when the target pressure level is 1,500 psi, the five nearest pressure levels to 1,500 psi (2,000 psi, 3,000 psi, 5,000 psi, 10,000 psi, and 15,000 psi) and their corresponding flange thickness data can be selected. Flexibly selecting nearby data points for different target pressure levels allows for a better simulation and reflection of flange thickness variation trends under the target pressure level, thereby constructing a more accurate and reliable mathematical function E that closely reflects actual operating conditions, improving the accuracy of the initial thickness calculation.

[0068] Multiple sets of design parameter data can be imported into professional data analysis and plotting software. A scatter plot can be created with pressure level on the horizontal axis and flange thickness on the vertical axis. A scatter plot is an intuitive data visualization tool that displays the relationship between two variables as points on a two-dimensional coordinate system, allowing observers to quickly grasp the overall distribution, trends, and patterns of the data. Furthermore, fitted curves can be overlaid on the scatter plot to further verify the model's accuracy. By observing the distribution of scatter points, it is possible to intuitively see whether there is a trend or regularity between pressure level and flange thickness, facilitating a quick understanding of the overall distribution, trends, and patterns of the data.

[0069] After calculating the initial thickness of the target flange, the initial thickness can be rounded. For example, when the calculation result contains decimals, regardless of the size of the decimal part, it is rounded up to the nearest integer to ensure that the actual thickness of the flange is large enough, thus providing sufficient safety margin. By rounding upwards, the actual thickness of the flange is ensured to be greater than the calculated value, providing additional safety margin. Even if the actual operating conditions change (such as pressure fluctuations or temperature changes), the design with safety margin can still maintain high reliability.

[0070] Or, when the calculation yields If the first digit after the decimal point of the value is 0 to 4 (inclusive), then the decimal part is adjusted to 0.5; when the calculated value... If the first digit after the decimal point of a value is 5 to 9 (inclusive), the decimal part is discarded, and the units digit is rounded up by 1. This special rounding rule, for example, rounds a calculated flange thickness of 53.33 to 53.5, and a calculated flange thickness of 53.56 to 54. This provides a more scientifically reasonable safety margin for the initial thickness of the target flange, significantly improving the efficiency of subsequent optimization processes.

[0071] Taking a target flange with a nominal diameter of 78mm and a target pressure rating of 25000psi as an example: The pressure ratings under the API 6A standard series, and the corresponding flange thicknesses for each pressure rating, are shown in Table 1.

[0072] Table 1

[0073]

[0074] The functional relationship is obtained through curve fitting:

[0075]

[0076] Will Substituting into the functional relationship, we can obtain After numerical rounding .

[0077] Taking a target flange diameter of 180mm and a target pressure rating of 25000psi as an example: The following table shows the next pressure rating in the API 6A standard series, and the corresponding flange thickness for each pressure rating:

[0078] Table 2

[0079]

[0080] The functional relationship is obtained through curve fitting:

[0081]

[0082] Will Substituting into the functional relationship, we can obtain After numerical rounding .

[0083] In some embodiments, determining the initial thickness of the target flange based on the first functional relationship and the pressure level in the actual operating conditions includes:

[0084] Based on the actual working conditions, the first functional relationship is modified to obtain a second functional relationship H between the pressure rating and the flange thickness:

[0085]

[0086] In the formula, The maximum pressure fluctuation in the aforementioned operating condition information can be expressed in psi.

[0087] This is the pressure fluctuation factor, and the unit can be mm / psi;

[0088] The ambient temperature in the aforementioned operating condition information can be expressed in °C.

[0089] This is the temperature factor, and the unit can be mm / ℃;

[0090] The initial thickness is determined based on the functional relationship H and the target pressure level.

[0091] Specifically, the pressure fluctuation factor represents the degree of influence of unit pressure fluctuation on flange thickness. The pressure fluctuation factor can be obtained by simulating the flange response under different pressure fluctuation conditions on a computer using methods such as finite element analysis; alternatively, it can be obtained through experimental measurement. The temperature factor represents the degree of influence of unit temperature change on flange thickness. The temperature factor can be obtained through experimental measurement, or by using thermodynamic analysis software to simulate flange behavior under different temperature conditions, obtaining the law of influence of temperature on flange thickness, and thus obtaining the temperature factor.

[0092] Introducing pressure fluctuation factor, maximum pressure fluctuation, ambient temperature, and temperature factor can more accurately reflect the impact of actual working conditions on flange thickness. This allows the optimized second function relationship H to comprehensively consider changes in pressure fluctuation and ambient temperature, improving the accuracy of the calculation. As a result, the final calculated initial thickness is closer to the final optimized flange thickness, reducing unnecessary repeated trials and error corrections, and improving design efficiency.

[0093] In some embodiments, obtaining multiple sets of design parameter data corresponding to the nominal diameter of the target flange in the current flange design standard includes:

[0094] In each of the current flange design standards, multiple sets of design parameter data corresponding to the nominal diameter of the target flange are obtained. Among these, there are multiple current flange design standards.

[0095] The process of curve fitting multiple sets of design parameter data to obtain a first functional relationship between pressure rating and flange thickness includes:

[0096] Curve fitting is performed on multiple sets of design parameter data obtained in each of the flange design standards to obtain multiple first sub-function relationships Q;

[0097] Based on multiple first sub-function relations Q, establish the first function relation E.

[0098] Specifically, multiple sets of design parameter data corresponding to the nominal diameter of the target flange can be collected from standards such as API 6A and GB / T 22513. Then, professional data analysis software can be used to perform curve fitting on the multiple design parameter data for each design standard to obtain the functional relationship Q. In establishing the functional relationship, pressure fluctuation factors, the maximum value of pressure fluctuation, ambient temperature, and temperature factors can be introduced to more accurately reflect the influence of actual working conditions on the flange thickness. Multiple functional relationships Q can be combined using data merging or a weighted average method to establish the functional relationship E.

[0099] By integrating multiple functional relationships Q, more data points can be used to describe the relationship between flange thickness and pressure rating, which helps to capture more subtle trends and thus improve the accuracy of the functional relationship E.

[0100] S102. Simulate the stress distribution of the target flange under the actual working conditions using simulation technology;

[0101] Specifically, detailed mechanical property analysis can be performed using finite element analysis (FEA) software to ensure the flange operates safely under the expected working conditions. First, all necessary data for the target flange is collected, including its geometry, material properties (elastic modulus, Poisson's ratio, yield strength, etc.), target pressure rating, and ambient temperature range. Then, the flange geometry model with initial thickness is imported into the selected FEA software for subsequent analysis. Next, the flange model is meticulously meshed, paying particular attention to stress concentration areas such as flange joints and near bolt holes. Common mesh types include tetrahedral, hexahedral, and hybrid meshes. Ensure the mesh in these critical areas is sufficiently fine to accurately capture stress distribution. Then, appropriate pressure and thermal loads are applied according to the flange's design parameters. For pressure loads, the target pressure rating is used; for thermal loads, the ambient temperature and its range are considered. Next, the mechanical property parameters of the flange material are accurately input into the FEA software, including but not limited to elastic modulus, Poisson's ratio, and yield strength. If necessary, nonlinear behaviors, such as plastic deformation or creep characteristics, can also be considered. Finally, the simulation solver is run to calculate the stress distribution of the flange under given operating conditions.

[0102] By simulating the stress distribution of the target flange under actual working conditions using simulation technology, the stress distribution of the flange under actual working conditions can be accurately predicted during the design stage. This avoids the errors of traditional design methods based on empirical formulas, identifies areas of abnormal stress, and allows for corresponding optimization measures to be taken, thereby improving the overall safety and reliability of the flange while saving materials.

[0103] S103. Identify abnormal stress zones in the stress distribution based on the initial thickness, wherein the actual stress value of the abnormal stress zone exceeds a preset safety threshold.

[0104] Specifically, a preset safety threshold can be determined based on the mechanical properties of the target flange material (different minimum strengths can be set for different pressure levels, and the preset safety threshold is determined based on this minimum strength; for example, flange materials for pressures above 105 MPa should have a strength of 45K (ksi, thousand pounds per square inch) or higher, flange materials for pressures above 140 MPa should have a strength of 60K or higher, and flange materials for pressures above 175 MPa should have a strength of 75K or higher). Then, simulation calculations are performed to obtain the stress distribution of the flange under different operating conditions. Next, stress distribution data is extracted from the simulation results, focusing on locations where stress concentration may occur, such as flange connections and near bolt holes. The actual stress values ​​at each key location are compared with the preset safety threshold; any area where the actual stress value exceeds the preset safety threshold is defined as an abnormal stress zone. The post-processing tools built into the FEA software can be used to generate stress cloud maps, displacement maps, etc., to visually display the location and degree of abnormal stress zones.

[0105] By accurately identifying areas in the flange structure where the actual stress value exceeds the preset safety threshold (i.e., abnormal stress areas) through simulation analysis, potential high-risk areas can be discovered. This not only helps to determine the specific locations where the thickness needs to be adjusted, but also lays the foundation for subsequent thickness optimization for these high-risk areas.

[0106] S104. Adjust the thickness of the target flange in the abnormal stress zone according to the actual stress value of the abnormal stress zone and the mapping relationship between the stress value and the thickness.

[0107] The method for adjusting the thickness of the target flange in the abnormal stress zone based on the mapping relationship between stress value and thickness includes:

[0108] Establish the mapping relationship between stress value and thickness, equation I:

[0109]

[0110] In the formula, This refers to the thickness adjustment value of the abnormal stress zone, which can be in mm.

[0111] The actual stress value can be expressed in MPa.

[0112] The preset stress value for the preset safety threshold (based on the aforementioned different minimum strengths of different materials for different pressure levels, the yield strength of the material can be known, and the preset stress value can be obtained by selecting an appropriate safety factor), the unit can be MPa;

[0113] This is a linear adjustment coefficient, used to indicate the degree to which the flange thickness needs to be increased linearly when the actual stress value exceeds the preset safety threshold; the unit can be mm / MPa.

[0114] This is a non-linear adjustment factor used to represent the square of the stress difference for each additional unit. The required increase in flange thickness can be expressed in mm / MPa.

[0115] Based on the mapping relationship I, the thickness of the target flange in the abnormal stress zone is adjusted.

[0116] Specifically, it can be determined through experimental measurements or by referring to data in existing literature. and The value can be determined by: 1) numerical simulation using FEA software, adjusting the flange thickness under different stress conditions to obtain the desired value; or 2) numerical simulation using FEA software to adjust the flange thickness under different stress conditions. and The value of .

[0117] For each identified abnormal stress zone, the mapping relationship I described above is used to... Substitute into the formula and calculate Then, in the FEA software, the thickness of the abnormal stress zone is adjusted. For example, if the calculation results for a certain area... If the thickness is 2mm, then increase the thickness by 2mm in that area; if the thickness of a certain area is calculated... If the value is -1mm, then the thickness in that area is reduced by 1mm. In the FEA software, after adjusting the thickness of all abnormal stress zones accordingly, the simulation calculation is rerun to verify the new stress distribution and ensure that the actual stress values ​​in all areas do not exceed the preset safety threshold.

[0118] By establishing a mapping relationship between stress value and thickness, the required thickness adjustment value for each abnormal stress zone can be accurately calculated, thereby enabling targeted adjustments. This not only improves the safety of the flange but also reduces material usage and manufacturing costs.

[0119] In some embodiments, adjusting the initial thickness according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone includes:

[0120] Based on the thickness adjustment value, the thickness distribution of the abnormal stress zone is updated according to a set gradient change rule, so that the thickness of the abnormal stress zone smoothly and continuously transitions from the initial thickness to the target thickness; wherein,

[0121] The formula for calculating the target thickness is:

[0122]

[0123] In the formula, The target thickness can be expressed in mm.

[0124] Specifically, the gradient change rule can be a linear gradient, a quadratic gradient, or other custom gradient functions. A transition region can be defined within the abnormal stress zone, and the gradient change rule can be applied within this transition region to smoothly transition the thickness from the initial thickness to the target thickness. Then, in the FEA software, the thickness distribution of the abnormal stress zone is updated according to the set gradient change rule. The adjusted model is then re-simulated to verify the new stress distribution and ensure that the actual stress values ​​in all regions do not exceed the preset safety threshold.

[0125] By setting gradient change rules for thickness adjustment and calculating the target thickness using mapping formulas, a smooth and continuous transition of the thickness in abnormal stress zones can be achieved. This not only improves the accuracy and safety of the design but also reduces material usage, lowers costs, and enhances design flexibility.

[0126] In some embodiments, adjusting the initial thickness according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone includes:

[0127] When the thickness adjustment value is less than or equal to the maximum allowable absolute value of the thickness difference between the abnormal stress zone and the adjacent zone, the initial thickness is adjusted according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone, wherein the adjacent zone is the region of the target flange adjacent to the abnormal stress zone;

[0128] If the thickness adjustment value is greater than the maximum allowable value, the thickness of the abnormal stress zone and the thickness of the adjacent region are adjusted to ensure that the difference between the adjusted thickness of the abnormal stress zone and the adjusted thickness of the adjacent region is less than the maximum allowable value.

[0129] Specifically, the maximum allowable value can be determined based on design requirements, material properties, and manufacturing processes. The thickness adjustment value is compared with the maximum allowable value: when the thickness adjustment value exceeds the maximum allowable value, the thickness of the abnormal stress zone and adjacent areas needs to be adjusted simultaneously. The thickness of the abnormal stress zone can be adjusted based on the thickness adjustment value, while the thickness of adjacent areas can be adjusted after the thickness adjustment of the abnormal stress zone, ensuring that the difference between the two after adjustment is less than the maximum allowable value. When the thickness adjustment value is less than or equal to the maximum allowable value, the thickness of the abnormal stress zone can be adjusted based on the thickness adjustment value. In the FEA software, the model is updated according to the adjusted thickness, and the simulation calculation is rerun to verify the new stress distribution, ensuring that the actual stress values ​​of all areas do not exceed the preset safety threshold.

[0130] By setting a maximum allowable thickness difference, it is possible to ensure that the thickness change between the abnormal stress zone and the adjacent area is smooth and continuous, so that the thickness gradually increases from the initial thickness to the target thickness, thereby effectively dispersing stress and improving the overall stability of the structure.

[0131] S105. Determine the structural parameters of the target flange based on the adjusted thickness.

[0132] Specifically, the new thickness values ​​obtained through simulation analysis and thickness adjustment calculations can be imported into the FEA software. In the FEA software, the flange's geometric model is updated to reflect the new thickness distribution. The updated flange model is then re-simulated to verify the new stress distribution. It is ensured that the actual stress values ​​in all areas do not exceed the preset safety threshold, and that the overall structural safety margin meets design requirements. Locations where stress concentration may occur (such as flange connections, near bolt holes, etc.) are also checked. If simulation results show that stress concentration issues still exist in certain areas, the thickness or other design parameters (such as material selection, structural shape, etc.) in these areas need further adjustment until the design requirements are met. A flange prototype is then manufactured according to the final design document. Strict adherence to design requirements is ensured during manufacturing, especially for the parts with adjusted thickness.

[0133] The method for calculating the thickness of non-standard flanges under ultra-high pressure conditions provided in this application determines the initial thickness based on the target flange's nominal diameter and actual operating conditions. This effectively addresses operating conditions exceeding current flange design standards and meets the needs of special application scenarios. Simulation technology is used to model the stress distribution of the target flange under actual operating conditions, comprehensively and accurately reflecting the stress state of the target flange in operation, providing reliable data support for subsequent thickness optimization. Based on the initial thickness, abnormal stress zones (i.e., areas where actual stress values ​​exceed preset safety thresholds) are identified in the stress distribution, enabling rapid location of weak points in the flange design and providing a basis for targeted optimization. According to the mapping relationship between stress values ​​and thickness, the thickness of abnormal stress zones is dynamically adjusted to ensure uniform and reasonable stress distribution across all regions of the flange, avoiding the risk of failure due to localized stress concentration. Targeted adjustments to the thickness of these areas improve the accuracy of the flange design, ensuring the safety and reliability of the overall flange structure. The final structural parameters of the flange are determined by the adjusted thickness, ensuring flange strength and reliability while avoiding over-design, reducing material waste, and lowering production costs. Therefore, the calculation method for the thickness of non-standard flanges under ultra-high pressure conditions provided in this application embodiment effectively solves the safety hazards and resource waste problems existing in traditional design methods. It not only improves the accuracy of flange design, but is also applicable to the design of non-standard flanges under high pressure conditions above 120MPa, thereby improving the safety and economy of industrial equipment under extreme ultra-high pressure working conditions.

[0134] Furthermore, this embodiment of the invention also provides a calculation device for the thickness of non-standard flanges under ultra-high pressure conditions, used for calculating the thickness of the aforementioned flanges. Figure 1 The method shown is implemented accordingly. This device embodiment corresponds to the foregoing method embodiment. For ease of reading, this device embodiment will not repeat the details of the foregoing method embodiment, but it should be clear that the device in this embodiment can implement all the contents of the foregoing method embodiment.Figure 2 As shown, the device includes:

[0135] The measurement determination unit 201 is used to determine the initial thickness of the target flange based on the nominal diameter of the target flange and the actual working conditions of the application, wherein the actual working conditions are outside the operating conditions corresponding to the current flange design standard.

[0136] Simulation unit 202 is used to simulate the stress distribution of the target flange under the actual working conditions using simulation technology;

[0137] The stress identification unit 203 is used to identify abnormal stress zones in the stress distribution based on the initial thickness, wherein the actual stress value of the abnormal stress zone exceeds a preset safety threshold.

[0138] The thickness adjustment unit 204 is used to adjust the thickness of the target flange in the abnormal stress zone according to the mapping relationship between stress value and thickness.

[0139] The structure determination unit 205 is used to determine the structural parameters of the target flange based on the adjusted thickness.

[0140] In one optional implementation, the measurement determination unit 201 is specifically used to: acquire multiple sets of design parameter data corresponding to the nominal diameter of the target flange in the current flange design standard, wherein each set of design parameter data includes a pressure rating and a flange thickness corresponding to the pressure rating; perform curve fitting on the multiple sets of design parameter data to obtain a first functional relationship between the pressure rating and the flange thickness; and determine the initial thickness of the target flange based on the first functional relationship and the pressure rating in the actual working condition.

[0141] In one optional implementation, the first functional relationship is as follows:

[0142]

[0143] In the formula, This indicates the pressure level under the actual operating conditions;

[0144] This indicates the initial thickness corresponding to the pressure level;

[0145] This indicates the reference pressure rating corresponding to the nominal diameter of the target flange;

[0146] This indicates the reference thickness corresponding to the reference pressure level;

[0147] This is an amplitude parameter used to represent the magnitude of change in flange thickness with pressure rating;

[0148] It is a dimensionless scaling factor used to represent the rate at which flange thickness changes with pressure rating.

[0149] In one optional implementation, the metering determination unit 201 determines the initial thickness of the target flange based on the first functional relationship and the pressure level in the actual working condition, including: modifying the first functional relationship based on the working condition information of the actual working condition to obtain a second functional relationship between the pressure level and the flange thickness; and determining the initial thickness of the target flange based on the pressure level in the actual working condition and the second functional relationship.

[0150] In one optional implementation, the second functional relationship is as follows:

[0151]

[0152] In the formula, This refers to the maximum pressure fluctuation value in the aforementioned operating condition information;

[0153] Pressure fluctuation factor;

[0154] The ambient temperature in the aforementioned operating condition information;

[0155] This is the temperature factor.

[0156] In one optional implementation, the measurement determination unit 201 acquires multiple sets of design parameter data corresponding to the nominal diameter of the target flange in the current flange design standard, including: acquiring multiple sets of design parameter data corresponding to the nominal diameter of the target flange in each current flange design standard, wherein there are multiple current flange design standards; the step of curve fitting the multiple sets of design parameter data to obtain a first functional relationship between the pressure rating and the flange thickness includes: performing curve fitting on the multiple sets of design parameter data acquired in each flange design standard to obtain multiple first sub-functional relationships; and establishing the first functional relationship based on the multiple first sub-functional relationships.

[0157] In one optional embodiment, the thickness adjustment unit 204 is specifically used to: determine the thickness adjustment value of the target flange in the abnormal stress zone based on the actual stress value of the abnormal stress zone and the mapping relationship between the stress value and the thickness; and adjust the initial thickness according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone.

[0158] In one optional implementation, the thickness adjustment unit 204 is specifically used to: determine the thickness adjustment value of the target flange in the abnormal stress zone based on the following mapping relationship between stress value and thickness:

[0159]

[0160] In the formula, This indicates the thickness adjustment value of the target flange in the abnormal stress zone;

[0161] This indicates the actual stress value of the target flange in the abnormal stress zone;

[0162] The preset stress value is the preset safety threshold.

[0163] This is a linear adjustment coefficient, used to indicate the degree to which the flange thickness needs to be increased linearly when the actual stress value exceeds the preset safety threshold;

[0164] This is a non-linear adjustment factor used to represent the square of the stress difference for each additional unit. The flange thickness needs to be increased by the amount of thickness.

[0165] This invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the method for calculating the thickness of non-standard flanges under ultra-high pressure conditions as described in any of the above embodiments.

[0166] This invention also provides a computer-readable storage medium storing a computer program thereon, wherein the computer program, when executed by a processor, implements the method for calculating the thickness of non-standard flanges under ultra-high pressure conditions as described in any of the above embodiments.

[0167] This invention also provides a computer program product, including a computer program, wherein when the computer program is executed by a processor, it implements the method for calculating the thickness of non-standard flanges under ultra-high pressure conditions as described in any of the above embodiments.

[0168] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0169] It is understood that the relevant features in the above methods and apparatus can be referenced interchangeably. Furthermore, the terms "first," "second," etc., in the above embodiments are used to distinguish between embodiments and do not represent the superiority or inferiority of any particular embodiment.

[0170] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0171] The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used in conjunction with the teachings herein. The required structure for constructing such systems is apparent from the above description. Furthermore, this invention is not directed to any particular programming language. It should be understood that the contents of the invention described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of the invention.

[0172] In addition, the memory may include non-permanent memory in computer-readable storage media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0173] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0174] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0175] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxesFigure 1 The function specified in one or more boxes.

[0176] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0177] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0178] Memory may include non-persistent memory in computer-readable storage media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable storage medium.

[0179] Computer-readable storage media include both permanent and non-permanent, removable and non-removable media that can store information by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer-readable storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable storage media does not include transient media, such as modulated data signals and carrier waves.

[0180] Computer program products can run on various computer devices, such as personal computers and servers. Regarding the software environment, an operating system and a corresponding programming language runtime environment need to be installed. It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0181] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0182] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for calculating the thickness of non-standard flanges under ultra-high pressure conditions, characterized in that, include: The initial thickness of the target flange is determined based on the nominal diameter of the target flange and the actual operating conditions of the application, which are outside the operating conditions corresponding to the current flange design standard. Simulation technology was used to simulate the stress distribution of the target flange under the actual working conditions. Based on the initial thickness, abnormal stress zones in the stress distribution are identified, wherein the actual stress value of the abnormal stress zone exceeds a preset safety threshold. Based on the actual stress value of the abnormal stress zone and the mapping relationship between the stress value and the thickness, the thickness of the target flange in the abnormal stress zone is adjusted. The structural parameters of the target flange are determined based on the adjusted thickness. Determining the initial thickness of the target flange based on its nominal diameter and the actual operating conditions includes: Obtain multiple sets of design parameter data corresponding to the nominal diameter of the target flange in the current flange design standard, wherein each set of design parameter data includes the pressure rating and the flange thickness corresponding to the pressure rating; Curve fitting was performed on multiple sets of the aforementioned design parameter data to obtain a first functional relationship between pressure rating and flange thickness; the first functional relationship is as follows: In the formula, This indicates the pressure level under the actual operating conditions; This indicates the initial thickness corresponding to the pressure level; This indicates the reference pressure rating corresponding to the nominal diameter of the target flange; This indicates the reference thickness corresponding to the reference pressure level; This is an amplitude parameter used to represent the magnitude of change in flange thickness with pressure rating; It is a dimensionless scaling factor used to represent the rate at which the flange thickness changes with the pressure rating. Based on the actual working conditions, the first functional relationship is modified to obtain a second functional relationship between the pressure rating and the flange thickness; the second functional relationship is as follows: In the formula, This refers to the maximum pressure fluctuation value in the aforementioned operating condition information; Pressure fluctuation factor; The ambient temperature in the aforementioned operating condition information; Temperature factor; The initial thickness of the target flange is determined based on the pressure level under the actual working conditions and the second functional relationship.

2. The method for calculating the thickness of non-standard flanges under ultra-high pressure conditions according to claim 1, characterized in that, The process of obtaining multiple sets of design parameter data corresponding to the nominal diameter of the target flange in the current flange design standard includes: In each of the current flange design standards, multiple sets of design parameter data corresponding to the nominal diameter of the target flange are obtained. Among these, there are multiple current flange design standards. The process of curve fitting multiple sets of design parameter data to obtain a first functional relationship between pressure rating and flange thickness includes: Curve fitting was performed on multiple sets of design parameter data obtained in each of the flange design standards to obtain multiple first sub-function relationships; Based on the multiple first sub-function relationships, establish the first function relationship.

3. The method for calculating the thickness of non-standard flanges under ultra-high pressure conditions according to claim 1, characterized in that, Adjusting the thickness of the target flange in the abnormal stress zone based on the actual stress value and the mapping relationship between the stress value and the thickness includes: Based on the actual stress value of the abnormal stress zone and the mapping relationship between the stress value and the thickness, the thickness adjustment value of the target flange in the abnormal stress zone is determined; The initial thickness is adjusted according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone.

4. The method for calculating the thickness of non-standard flanges under ultra-high pressure conditions according to claim 3, characterized in that, The step of determining the thickness adjustment value of the target flange in the abnormal stress zone based on the actual stress value and the mapping relationship between the stress value and the thickness includes: Based on the following mapping relationship between stress value and thickness, the thickness adjustment value of the target flange in the abnormal stress zone is determined: In the formula, This indicates the thickness adjustment value of the target flange in the abnormal stress zone; This indicates the actual stress value of the target flange in the abnormal stress zone; The preset stress value is the preset safety threshold. This is a linear adjustment coefficient, used to indicate the degree to which the flange thickness needs to be increased linearly when the actual stress value exceeds the preset safety threshold; This is a non-linear adjustment factor used to represent the square of the stress difference for each additional unit. The flange thickness needs to be increased by the amount of thickness.

5. The method for calculating the thickness of non-standard flanges under ultra-high pressure conditions according to claim 3, characterized in that, The step of adjusting the initial thickness according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone includes: Based on the thickness adjustment value, the thickness distribution of the abnormal stress zone is updated according to a set gradient change rule, so that the thickness of the abnormal stress zone smoothly and continuously transitions from the initial thickness to the target thickness; wherein, The formula for calculating the target thickness is: In the formula, The target thickness; This indicates the initial thickness; This indicates the thickness adjustment value.

6. The method for calculating the thickness of non-standard flanges under ultra-high pressure conditions according to any one of claims 3 to 5, characterized in that, The step of adjusting the initial thickness according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone includes: When the thickness adjustment value is less than or equal to the maximum allowable absolute value of the thickness difference between the abnormal stress zone and the adjacent zone, the initial thickness is adjusted according to the thickness adjustment value to obtain the thickness of the target flange in the abnormal stress zone, wherein the adjacent zone is the region of the target flange adjacent to the abnormal stress zone; If the thickness adjustment value is greater than the maximum allowable value, the thickness of the abnormal stress zone and the thickness of the adjacent region are adjusted to ensure that the difference between the adjusted thickness of the abnormal stress zone and the adjusted thickness of the adjacent region is less than the maximum allowable value.

7. A calculation device for the thickness of non-standard flanges under ultra-high pressure conditions, characterized in that, include: The measurement determination unit is used to determine the initial thickness of the target flange based on the nominal diameter of the target flange and the actual working conditions of the application, wherein the actual working conditions are outside the operating conditions corresponding to the current flange design standard. The simulation unit is used to simulate the stress distribution of the target flange under actual working conditions using simulation technology. A stress identification unit is used to identify abnormal stress zones in the stress distribution based on the initial thickness, wherein the actual stress value of the abnormal stress zone exceeds a preset safety threshold. A thickness adjustment unit is used to adjust the thickness of the target flange in the abnormal stress zone according to the mapping relationship between stress value and thickness. A structure determination unit is used to determine the structural parameters of the target flange based on the adjusted thickness. The measurement determination unit is specifically used for: Obtain multiple sets of design parameter data corresponding to the nominal diameter of the target flange in the current flange design standard, wherein each set of design parameter data includes the pressure rating and the flange thickness corresponding to the pressure rating; Curve fitting was performed on multiple sets of the aforementioned design parameter data to obtain a first functional relationship between pressure rating and flange thickness; the first functional relationship is as follows: In the formula, This indicates the pressure level under the actual operating conditions; This indicates the initial thickness corresponding to the pressure level; This indicates the reference pressure rating corresponding to the nominal diameter of the target flange; This indicates the reference thickness corresponding to the reference pressure level; This is an amplitude parameter used to represent the magnitude of change in flange thickness with pressure rating; It is a dimensionless scaling factor used to represent the rate at which the flange thickness changes with the pressure rating. Based on the actual working conditions, the first functional relationship is modified to obtain a second functional relationship between the pressure rating and the flange thickness; the second functional relationship is as follows: In the formula, This refers to the maximum pressure fluctuation value in the aforementioned operating condition information; Pressure fluctuation factor; The ambient temperature in the aforementioned operating condition information; Temperature factor; The initial thickness of the target flange is determined based on the pressure level under the actual working conditions and the second functional relationship.

8. A computer device, comprising a memory, a processor, and a computer program stored in the memory, characterized in that, The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the steps of the method according to any one of claims 1 to 6.

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