Support hanger design verification method, verification device and design method and design system

Abstract

The application discloses a support hanger design verification method, a verification device, and a design method and a design system. The method comprises the following steps: performing a theoretical verification test on a support hanger to obtain a stress nephogram and a displacement nephogram of the support hanger. According to the stress nephogram and the displacement nephogram of the support hanger, an actual working condition verification test is performed on the support hanger. According to the results of the theoretical verification test and the actual working condition verification test, it is determined whether the support hanger meets design requirements. The support hanger design verification method proves that the support hanger structure meets design requirements through a combination of theoretical calculation and actual working condition verification, so that a more reliable determination result can be obtained.

Description

Technical Field

[0001] This invention relates to a method, device, and system for verifying the design of pipe supports and hangers in nuclear power plants. Background Technology

[0002] Pipe supports and hangers are an important component of the piping system in nuclear power projects. The rationality of their arrangement, the appropriateness of their structural selection, and the reliability of their quality directly affect the stress state of the pipeline under different operating conditions, thus impacting the safe operation and service life of the nuclear power plant. Furthermore, due to the large number of pipe supports and hangers used, they significantly influence both the project's construction progress and cost.

[0003] In the past, the design verification of power plant supports and hangers typically used component verification and whole-machine performance testing to verify whether the structural design met the specifications. This method can usually only measure the maximum load value that the support and hanger can reach before failure, i.e., the yield load value, and lacks further analysis and verification of the support and hanger structure, making it difficult to obtain reliable judgment results.

[0004] In particular, the design of piping and related systems for the nuclear island plant processes of domestically operating and planned VVER units, including piping and accessories for nuclear-grade and non-nuclear-grade process systems with large usage within the design scope. The localization of support and hanger development, due to the large number of models and complex specifications, urgently requires a reliable method for verifying the structural design of support and hangers to test and accept domestically developed support and hanger samples. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art by providing a method, device and system for verifying the design of support and hanger structures. The verification method proves that the support and hanger structure meets the design requirements by combining theoretical calculations and actual working condition verification, thereby obtaining more reliable judgment results.

[0006] According to an embodiment of the first aspect of the present invention, a method for verifying the design of a support bracket is provided, comprising the following steps:

[0007] S1: Conduct theoretical verification tests on the supports and hangers to obtain stress cloud diagrams and displacement cloud diagrams of the supports and hangers.

[0008] S2: Based on the stress cloud diagram and displacement cloud diagram of the support and hanger, conduct an actual working condition verification test on the support and hanger.

[0009] S3: Based on the results of the theoretical verification test and the actual working condition verification test, determine whether the support and hanger meet the design requirements.

[0010] Preferably, step S1 specifically includes: establishing a finite element model of the support; performing finite element calculations on the finite element model of the support to obtain stress contour maps and displacement contour maps of the support; and determining whether the support has passed the theoretical verification test based on the stress contour maps and displacement contour maps.

[0011] Preferably, determining whether the support has passed the theoretical verification test based on the stress cloud diagram and the displacement cloud diagram specifically includes: obtaining the theoretical yield load of the support using the stress cloud diagram and the displacement cloud diagram, obtaining the design load requirement of the support, and comparing the theoretical yield load with the design load requirement: if the theoretical yield load is greater than or equal to the design load requirement, the support is determined to have passed the theoretical verification test; if the theoretical yield load is less than the design load requirement, the support is determined to have failed the theoretical verification test.

[0012] Preferably, step S2 specifically includes: determining the high-risk area of ​​the support based on the stress cloud map and displacement cloud map; conducting an overall yield test on the support to collect overall displacement-load data of the support and stress-load data of the high-risk area; and determining whether the support has passed the actual working condition verification test based on the displacement-load data and the stress-load data.

[0013] Preferably, the step of conducting an overall yield test on the support to collect overall displacement-load data of the support and the stress-load data of the high-risk area specifically includes: slowly applying a test load to the support until the support becomes unstable or loses its integrity, and during this process, collecting overall displacement-load data of the support and the stress-load data of the high-risk area.

[0014] Preferably, the step of determining whether the support has passed the actual working condition verification test based on the displacement-load data and the stress-load data specifically includes: plotting displacement-load curves and stress-load curves based on the displacement-load data and the stress-load data, respectively; obtaining the overall yield load of the support and the failure load when significant yield deformation occurs in the high-risk area using the displacement-load curves and the stress-load curves, respectively; comparing the overall yield load of the support with the design load requirement: if the yield load is less than the design load requirement, the support has failed the actual working condition verification test; if the yield load is greater than or equal to the design load requirement, the failure load of the high-risk area of ​​the support is further compared with the design load requirement: if the failure load is less than the design load requirement, the support has failed the actual working condition verification test; if the failure load is greater than or equal to the design load requirement, the support has passed the actual working condition verification test.

[0015] Preferably, step S3 specifically includes: if the support and hanger pass the theoretical verification test and the actual working condition verification test, then it is determined that the support and hanger can meet the design requirements; otherwise, it is determined that the support and hanger cannot meet the design requirements.

[0016] According to an embodiment of a second aspect of the present invention, a method for designing a support and hanger is provided, comprising: designing the structure of the support and hanger; determining whether the support and hanger meets the design requirements according to the above-described support and hanger design verification method; and if the support and hanger meets the design requirements, determining that the structural design of the support and hanger is qualified.

[0017] Preferably, if it is determined that the support does not meet the design requirements, the support is thickened and reinforced, and the reinforced support is judged again according to the above-mentioned support design verification method to determine whether it meets the design requirements. This process is repeated until the support meets the design requirements.

[0018] According to an embodiment of a third aspect of the present invention, a support / hanger design verification device is provided, comprising: a first verification module, a second verification module, and a judgment module. The first verification module is used to perform theoretical verification tests on the support / hanger to obtain stress cloud diagrams and displacement cloud diagrams of the support / hanger. The second verification module is connected to the first verification module and is used to perform actual working condition verification tests on the support / hanger based on the stress cloud diagrams and displacement cloud diagrams of the support / hanger. The judgment module is connected to both the first verification module and the second verification module and is used to determine whether the support / hanger meets the design requirements based on the results of the theoretical verification tests and the actual working condition verification tests.

[0019] Preferably, the first verification module includes: a modeling unit, a finite element calculation unit, and a first control unit. The modeling unit is used to establish a finite element model of the support. The finite element calculation unit, connected to the modeling unit, is used to perform finite element calculations on the finite element model of the support to obtain stress contour maps and displacement contour maps of the support. The first control unit, connected to both the finite element calculation unit and the judgment module, is used to determine whether the support has passed the theoretical verification test based on the stress contour maps and displacement contour maps: if the support has passed the theoretical verification test, a first signal is sent to the judgment module; if the support has failed the theoretical verification test, a second signal is sent to the judgment module.

[0020] Preferably, the second verification module includes: a first processing unit, a second processing unit, and a second control unit. The first processing unit, connected to the finite element calculation unit, is used to determine the high-risk area of ​​the support based on the stress cloud map and displacement cloud map. The second processing unit, connected to the first processing unit, is used to perform an overall yield test on the support to collect overall displacement-load data of the support and stress-load data of the high-risk area. The second control unit, connected to both the second processing unit and the judgment module, is used to determine whether the support has passed the actual working condition verification test based on the displacement-load data and the stress-load data: if the support has passed the actual working condition verification test, a third signal is sent to the judgment module; if the support has failed the actual working condition verification test, a fourth signal is sent to the judgment module.

[0021] Preferably, the judgment module includes a third control unit. The third control unit is connected to the first control unit and the second control unit, and is used to determine, upon receiving a first signal and a third signal, that the support / hanger meets the design requirements; or, upon receiving a second signal and a fourth signal, to determine that the support / hanger does not meet the design requirements.

[0022] According to an embodiment of a fourth aspect of the present invention, a design system for supports and hangers is provided, characterized in that it includes: a design module and the aforementioned support and hanger design verification device. The design module is used to design the structure of the support and hanger. The support and hanger design verification device is used to determine whether the support and hanger meets the design requirements: if the support and hanger is determined to meet the design requirements, then the structural design of the support and hanger is determined to be qualified.

[0023] The support and hanger design verification method in this invention can initially determine whether the structural design of the support and hanger meets the design requirements by conducting theoretical verification tests. Then, using the stress and displacement cloud diagrams obtained from the theoretical verification tests, actual working condition verification tests are conducted on the support and hanger to further determine whether the structural design of the support and hanger meets the design requirements. Therefore, this support and hanger design verification method proves that the support and hanger structure meets the design requirements by combining theoretical calculations and actual working condition verification, thus obtaining a more reliable judgment result. Attached Figure Description

[0024] Figure 1 This is a flowchart of the support and hanger structure design verification method in some embodiments of the present invention;

[0025] Figure 2 These are schematic diagrams of the support and hanger structure in some embodiments of the present invention;

[0026] Figure 3 This is a finite element analysis model of the support and hanger in some embodiments of the present invention;

[0027] Figure 4 These are displacement cloud diagrams of the supports and hangers in some embodiments of the present invention;

[0028] Figure 5 These are stress cloud diagrams of supports and hangers in some embodiments of the present invention;

[0029] Figure 6 a is a side view of the support and hanger after the strain gauge is installed in some embodiments of the present invention;

[0030] Figure 6 b is a front view of the support and hanger after the strain gauge is installed in some embodiments of the present invention;

[0031] Figure 7 This is a schematic diagram of the installation structure of the load testing fixture in some embodiments of the present invention;

[0032] Figure 8 This is a schematic diagram of the stress-load curves of the supports and hangers in some embodiments of the present invention;

[0033] Figure 9 This is a schematic diagram of the displacement-load curve of the support and hanger in some embodiments of the present invention.

[0034] In the diagram: 1-Hanger, 11-Upper bolt, 12-Middle bolt, 13-Bottom bolt, 14-Pipe clamp, 2-Yield test fixture, 21-Tension machine, 22-Tension arm, 23-Simulated pipe, 24-Fitting platform, 25-Lifting lug, 3-Strain gauge, 4-Calculation equipment. Detailed Implementation

[0035] The technical solutions of the invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without creative effort are within the scope of the invention.

[0036] In the description of this invention, it should be noted that the terms "upper", "lower", "upstream", "downstream", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience and simplification of the description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] In the description of this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Example 1

[0040] Please see Figure 1 This invention discloses a method for verifying the design of supports and hangers, including as follows:

[0041] Next steps:

[0042] S1: Theoretical verification test was conducted on support 1 to obtain stress cloud diagram and displacement cloud diagram of support 1.

[0043] S2: Based on the stress cloud diagram and displacement cloud diagram of support 1, conduct a verification test on support 1 under actual working conditions.

[0044] S3: Based on the results of theoretical verification tests and actual working condition verification tests, determine whether support 1 meets the design requirements.

[0045] like Figure 2 As shown, Figure 2 This is a common horizontal insulated and seismic-resistant pipe support 1 used in VVER nuclear power units. According to design requirements, its design load should reach 7.5KN. The main structure design is completed in accordance with standard specifications, mainly including upper bolt 11, middle bolt 12, bottom bolt 13, and pipe clamp 14.

[0046] It should be noted that the theoretical verification experiment involved performing finite element analysis on the support 1 using finite element software to preliminarily determine whether the structure of the support 1 could meet the design requirements. Figure 4 , Figure 5 As shown, the displacement and stress contour maps of support 1 under design conditions are displayed. It can be seen that different shaded areas represent different displacement deformations and stresses. Therefore, the high-stress areas in support 1 can be visually distinguished by different shades, and the deformation trend of support 1 after being subjected to load can be predicted. In practical applications, different colors can also be used to represent different displacement and stress areas.

[0047] After completing the theoretical verification test, the support 1 was subjected to an actual working condition verification test using a load test fixture. By verifying the consistency between the finite element theoretical calculation and the structural bearing characteristics of the support 1 under actual operating conditions, the rationality and reliability of the support 1 design were verified.

[0048] Therefore, this method combines theoretical calculations with actual working condition verification to prove that the support structure 1 meets the design requirements, thus obtaining more reliable judgment results.

[0049] Furthermore, this method is particularly applicable to domestically developed VVER nuclear power unit pipe supports and hangers 1.

[0050] like Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment, step S1 specifically includes: establishing a finite element model of the support 1.

[0051] Finite element analysis was performed on the finite element model of support 1 to obtain the stress contour map and displacement contour map of support 1.

[0052] Based on the stress cloud diagram and displacement cloud diagram, determine whether support 1 has passed the theoretical verification test.

[0053] in, Figure 3 This is a finite element model established using the finite element program ANSYS to perform mechanical analysis on the support structure. ANSYS was widely used in Westinghouse's AP1000 project, and its effectiveness has been recognized by the National Nuclear Safety Administration.

[0054] The specific steps for performing finite element analysis on support 1 using the ANSYS program are as follows: Mesh the finite element model to generate finite element calculation elements. Set the properties of the finite element calculation elements and define the material characteristic values. Set the boundary conditions, fixed points, and loads applied to the finite element analysis for the finite element model. After iterative calculation by the software, output stress and displacement contour maps.

[0055] like Figure 4 As shown, Figure 4 This is a displacement contour plot of the pipe clamp of support 1 under the corresponding load condition, obtained by elastic stress analysis calculation of support 1 according to the input boundary conditions, ASME NF3000 and Appendix F requirements. For example... Figure 5 As shown, Figure 5 Based on the input boundary conditions and the requirements of ASME NF3000 and Appendix F, the maximum principal stress cloud diagram of the pipe clamp of support 1 under the corresponding load under the design working condition is obtained by elastic stress analysis calculation of support 1.

[0056] More specifically, the finite element model of the support 1 uses SHELL181 shell elements and BEAM188 beam elements for finite element calculation. The pipe clamp of support 1 is calculated using a contact model. Since frictional contact occurs between the pipe clamp and the pipe during loading, a friction coefficient of 0.35 is established between the pipe and the clamp. The bolts of support 1 are coupled with the pipe clamp, constraining the Z-axis displacement of the pin and the axial displacement of the pipe.

[0057] In addition, in step S1, based on the stress cloud diagram and displacement cloud diagram, it is determined whether the support 1 has passed the theoretical verification test. Specifically, the following steps are included: the theoretical yield load of the support 1 is obtained through the stress cloud diagram and displacement cloud diagram.

[0058] Obtain the design load requirements for support 1.

[0059] The theoretical yield load is compared with the design load requirement: if the theoretical yield load is greater than or equal to the design load requirement, the support 1 is judged to have passed the theoretical verification test; if the theoretical yield load is less than the design load requirement, the support 1 is judged to have failed the theoretical verification test.

[0060] In this embodiment, step S2 specifically includes: determining the high-risk area of ​​the support 1 based on the stress cloud map and displacement cloud map.

[0061] An overall yield test was conducted on support 1 to collect overall displacement-load data and stress-load data of high-risk areas of support 1.

[0062] Determine whether support 1 has passed the actual working condition verification test based on displacement-load data and stress-load data.

[0063] Through analysis Figure 4 and Figure 5 The values ​​of different regions in the cloud map show that the structurally vulnerable areas of the support bracket 1 under the design conditions include the area below the upper bolt holes, around the middle bolt holes, the area where the pipe clamp is bent and formed, and around the lower bolts. These areas are the high-risk areas.

[0064] Furthermore, an overall yield test was conducted on support 1 to collect overall displacement-load data and stress-load data of high-risk areas of support 1, specifically including:

[0065] The test load is slowly applied to the support 1 until the support 1 becomes unstable or loses its integrity. During this process, the overall displacement-load data and stress-load data of the support 1 and the high-risk area are collected.

[0066] It should be noted that before conducting the overall yield test on support 1, resistance strain gauges 3 need to be installed in the high-risk areas of support 1, such as... Figure 6 a and Figure 6 As shown in b, in Figure 6 Figures a and 6b show the positions of strain gauges 3 on support 1. Two sets of resistance strain gauges 3 are installed, each containing eight strain gauges 3. The strain gauges 3 in set 1 are arranged from top to bottom as follows: 1-1, 1-2, 1-3...1-8; the strain gauges 3 in set 2 are arranged from top to bottom as follows: 2-1, 2-2, 2-3...2-8.

[0067] The resistance strain gauge 3 can output the microscopic deformation of the structure in the form of voltage or current. The higher the signal value, the greater the stress and strain value at that location. The resistance strain gauge 3 transmits the detected stress electrical signal to the computing device 4, and the computing device 4 converts the electrical signal into a stress value through the calibration curve.

[0068] The high-risk areas identified in the theoretical verification tests are the weakest links in the overall structure of support 1, such as: below the upper bolt holes, around the middle bolt holes, at the bending and forming points of the pipe clamps, and around the lower bolts. By measuring the stress changes in the weak links of support 1 using resistance strain gauges 3 and detecting their deformation trends, the consistency between the finite element theory analysis and the actual working conditions can be effectively verified, thus proving that the support 1 product meets the design requirements.

[0069] like Figure 7 As shown, during the overall yield test, tensile loads are applied to the support 1 using the yield test fixture 2 until the support 1 becomes unstable or loses its integrity. Figure 6As shown, the yield test fixture 2 includes a tensile testing machine 21 and a fixture platform 24. The tensile testing machine 21 is equipped with a vertically extendable tension arm 22, the lower end of which is equipped with a simulated pipe 23. The pipe clamp 14 of the support 1 is fitted onto the simulated pipe 23. The fixture platform 24 is located directly below the tensile testing machine 21 and is mounted on a fixed test platform via bolt holes and anchor bolts. The upper end of the fixture platform 24 is equipped with a lifting lug 25, and the lower end of the support 1 is fixedly connected to the lifting lug 25 by bolts. During the test, a specified load is input to the press via a servo motor, and the simulated pipe 23 is pulled upward by a hydraulic press to load the pipe clamp 14. The tensile testing machine 21 is also electrically connected to a computing device 4 to output displacement electrical signals.

[0070] In the overall yield test, the computing device 4 can collect overall displacement-load data through the displacement electrical signal output by the tensile testing machine 21, and simultaneously collect stress-load data in high-risk areas through the stress electrical signal output by the resistance strain gauge 3. The yield test fixture 2 applies a tensile load to the support 1 to verify the overall structural stability of the support 1, demonstrating from a macroscopic perspective the reasonable coordination of the components of the support 1, and collecting data on when the support 1 becomes unstable or loses its integrity, in order to analyze the impact of support 1 failure on the piping system during actual operation. The resistance strain gauge 3 is used to measure the microstructural changes of the components of the support 1 during the load-bearing process, proving the consistency between its stress distribution and the finite element simulation calculation, and collecting the load-bearing characteristics of the components.

[0071] Specifically, following the principle of the overall yield test, a load is slowly applied to the support 1 until it yields as a whole, meaning the relationship between displacement and load is non-linear. Then, the load is continued as long as possible until the support loses its integrity or becomes unstable (generally, the loss of function of the support 1 can be categorized into two situations: first, the structural components of the support 1 break or deteriorate; depending on the complexity of the support structure, the degree of integrity damage to the entire support varies after component breakage. In this embodiment, after any component of the support 1 breaks, the support 1 cannot be fixed to the test fixture, thus the test cannot continue; this is called loss of integrity; second, the components of the support 1 undergo irreversible structural deformation, but no component breaks. This situation is usually related to the structure and material selection of the components. When the pipe clamp 14 deforms, it remains connected to the test fixture and can still be loaded, but the support function has been lost, and there is no need to continue the test; this situation is called instability).

[0072] In addition, if the load applied to the support 1 reaches 5 times the nominal load and the support 1 still does not lose its integrity or become unstable, the load is maintained for 1 minute, the maximum stress in the high-risk area is measured, and after visually observing that the sample has no obvious deformation, the loading continues until the deformation increases and the load no longer increases.

[0073] Furthermore, based on the displacement-load data and stress-load data, it is determined whether the support 1 has passed the actual working condition verification test, specifically including:

[0074] Plot displacement-load curves and stress-load curves based on displacement-load data and stress-load data, respectively.

[0075] The overall yield load of support 1 and the failure load when obvious yield deformation occurs in the high-risk area are obtained by displacement-load curve and stress-load curve respectively.

[0076] Compare the yield load of support 1 with the design load requirement:

[0077] If the yield load is less than the design load, then support 1 is deemed to have failed the actual working condition verification test;

[0078] If the yield load is greater than or equal to the design load, then continue to compare the failure load of the high-risk area of ​​support 1 with the design load:

[0079] If the failure load is less than the design load, then the support 1 is deemed to have failed the actual working condition verification test.

[0080] If the failure load is greater than or equal to the design load, then the support 1 is deemed to have passed the actual working condition verification test.

[0081] Specifically, displacement-load data and stress-load data can be input into a computer device, which can then plot the displacement-load data and stress-load data. For example... Figure 8 a, Figure 8 b、 Figure 8 As shown in c, where... Figure 8 a is the stress-load curve plotted based on the stress-load data collected from strain gauges 31-1, 2-1, 1-2, 2-2, 1-3, and 2-3. Figure 8 b is the stress-load curve plotted based on the stress-load data collected from strain gauges 31-4, 2-4, 1-5, 2-5, 1-6, and 2-6. Figure 8 'a' represents the stress-load curve plotted based on the stress-load data collected from strain gauges 31-7, 2-7, 1-8, and 2-8. (Example:) Figure 9 As shown, Figure 9 This is a schematic diagram of the displacement-load curve of support 1.

[0082] For example, the stress-load curves of measuring points 1-1, 2-1, 1-2, 2-2, 1-3, and 2-3 show that the applied load mainly affects the stress of the upper half of the pipe clamp 14 of the support 1 near the upper bolt 11. The stresses at measuring points 1-1, 2-1, 1-2, and 2-2 are all positive, indicating that tensile stress is present near these measuring points. When the load reaches approximately 65 kN, the stress in the support structure near measuring points 1-2 and 2-2 rises rapidly. When the load reaches approximately 75 kN, measuring points 1-1, 2-1, 1-2, and 2-2 reach an equilibrium value. When the load reaches approximately 120 kN, the stress near measuring points 1-1, 2-1, 1-2, and 2-2 decreases due to changes in the support structure.

[0083] The stress-load curves at measuring points 1-4, 2-4, 1-5, 2-5, 1-6, and 2-6 show that the stress influence of the bent section in the middle of pipe clamp 14 is concentrated near measuring points 1-4, 2-4, 1-6, and 2-6. The stress at these measuring points is negative, indicating that they are all subjected to compressive stress. When the load is approximately 60 kN, the stress near measuring points 1-4, 2-4, 1-6, and 2-6 increases rapidly. When the load reaches approximately 83 kN, the rate of stress increase slows down due to structural changes. When the load reaches approximately 118 kN, the structure at measuring points 1-6 and 2-6 of support 1 fails, reaching the maximum load.

[0084] The stress-load curves at measuring points 1-7, 2-7, 1-8, and 2-8 show that the stress in the area above the bottom bolt holes is negative, indicating a compressive state near these points; the stress in the area beside the bottom bolt holes is positive, indicating a tensile state near these points. When the load near the bolt holes reaches approximately 90 kN, the stress curve shows an inflection point due to changes in the support structure.

[0085] Based on the stress-load curves at all the measuring points, it can be seen that when the support 1 is subjected to a load of 60 kN, no structural changes occur at any of the measuring points. However, after the load exceeds 60 kN, severe deformation begins to occur at both ends of the pipe clamp bending section. Therefore, the failure load in the high-risk area reaches 8 times the design load requirement, which meets the requirements of the overall yield test.

[0086] Furthermore, such as Figure 9 As shown, Figure 9 The displacement-load curve of support 1 during the overall yield test is shown. It can be seen that the curve begins to bend after exceeding 60 kN, and a clear inflection point appears when approaching 80 kN. Analysis of the curve leads to the conclusion that the support 1 structure begins to enter the yielding stage at a load of 60 kN, and its basic function fails when the load reaches 80 kN. The data are basically consistent with the strain gauge 3 patch test.

[0087] In this embodiment, step S3 specifically includes:

[0088] If support 1 passes both the theoretical verification test and the actual working condition verification test, then support 1 is deemed to meet the design requirements.

[0089] Otherwise, it is determined that support 1 cannot meet the design requirements.

[0090] It should also be noted that if the conclusions drawn from the theoretical verification test and the actual working condition verification test are inconsistent, the support 1 needs to be retested after checking the test equipment.

[0091] Therefore, this support and hanger design verification method can prove that the support and hanger 1 structure meets the design requirements by combining theoretical calculation and actual working condition verification, so as to obtain more reliable judgment results. At the same time, it can also collect data for the structural optimization of the support and hanger.

[0092] Example 2

[0093] This invention discloses a design method for a support bracket, comprising the following steps:

[0094] Design the structure of support bracket 1.

[0095] According to the design verification method of support and hanger 1 in Example 1, it is determined whether support and hanger 1 meets the design requirements: if it is determined that support and hanger 1 meets the design requirements, then the structural design of support and hanger 1 is qualified.

[0096] It should be noted that the structural design of the support 1 can be completed by staff using computer equipment. Next, a theoretical verification test is conducted on the support 1 to preliminarily verify whether the support 1 meets the design requirements, and to obtain the stress cloud diagram and displacement cloud diagram of the support 1.

[0097] Then, based on the stress and displacement cloud diagrams of support 1, a practical working condition verification test was conducted on support 1. Finally, the results of the theoretical verification test and the practical working condition verification test were used to determine whether support 1 meets the design requirements.

[0098] If support 1 passes both the theoretical verification test and the actual working condition verification test, then support 1 is deemed to meet the design requirements, and its structural design is deemed qualified. If support 1 fails both the theoretical verification test and the actual working condition verification test, then support 1 is deemed not to meet the design requirements.

[0099] In this embodiment, if it is determined that the support 1 does not meet the design requirements, the support 1 is thickened and reinforced, and the reinforced support 1 is judged again according to the above-mentioned support 1 design verification method to determine whether it meets the design requirements. This process is repeated until the support 1 meets the design requirements.

[0100] More specifically, staff can use the stress cloud diagram and displacement cloud diagram of the support 1 to identify the high-risk areas of the support 1, and then reinforce the high-risk areas of the support 1 in a targeted manner, while thinning and reducing the weight of the low-stress areas.

[0101] Therefore, the design method of this support and hanger can be used to design a support and hanger structure that meets the design requirements.

[0102] Example 3

[0103] The present invention also discloses a support and hanger design verification device, comprising: a first verification module, a second verification module and a judgment module.

[0104] The system comprises three modules: a first verification module for conducting theoretical verification tests on the support 1 to obtain its stress and displacement contour maps; a second verification module connected to the first verification module for conducting actual working condition verification tests on the support 1 based on its stress and displacement contour maps; and a judgment module connected to both the first and second verification modules for determining whether the support 1 meets the design requirements based on the results of the theoretical and actual working condition verification tests.

[0105] It should be noted that the first verification module can use the finite element program ANSYS. The first verification module includes: a modeling unit, a finite element calculation unit, and a first control unit. These are all sub-modules of the ANSYS program. The modeling unit is used to establish the finite element model of the support 1. The finite element calculation unit, connected to the modeling unit, is used to perform finite element calculations on the finite element model of the support 1 to obtain the stress contour map and displacement contour map of the support 1. The first control unit, connected to both the finite element calculation unit and the judgment module, is used to determine whether the support 1 has passed the theoretical verification test based on the stress contour map and displacement contour map: if the support 1 is determined to have passed the theoretical verification test, a first signal is sent to the judgment module; if the support 1 is determined to have failed the theoretical verification test, a second signal is sent to the judgment module. The first control unit can be manually controlled. After the operator obtains the theoretical yield load of the support 1 based on the stress contour map and displacement contour map, the operator inputs the theoretical yield load and the design requirement load of the support 1 into the first control unit. The first control unit determines whether the support 1 has passed the theoretical verification test based on the theoretical yield load and the design requirement load.

[0106] In this embodiment, the second verification unit includes: a first processing unit, a second processing unit, and a second control unit.

[0107] The first processing unit, connected to the finite element calculation unit, is used to determine the high-risk areas of the support 1 based on the stress and displacement cloud diagrams. Specifically, the first processing unit can be a display device to show the stress and displacement cloud diagrams. After observing the stress and displacement cloud diagrams of the support 1 through the first processing unit, the staff determines the high-risk areas of the support 1.

[0108] The second processing unit, connected to the first processing unit, is used to conduct an overall yield test on the support 1 to collect overall displacement-load data and stress-load data of high-risk areas of the support 1. Specifically, the second processing unit includes a resistance strain gauge 3, a computing device 4, and a yield test fixture 2.

[0109] The yield test fixture 2 includes a tensile testing machine 21 and a fixture platform 24. The tensile testing machine 21 has a telescopic tensile arm 22, the lower end of which is fitted with a simulated pipe 23. The pipe clamp of the support bracket 1 is fitted onto the simulated pipe 23. The fixture platform 24 is located directly below the tensile testing machine 21 and is mounted on a fixed test platform via bolt holes and anchor bolts. The upper end of the fixture platform 24 has a lifting lug 25, and the lower end of the support bracket 1 is fixedly connected to the lifting lug 25 via bolts. During the test, a specified load is input to the press via a servo motor, and the simulated pipe 23 is pulled upwards by a hydraulic press to load the pipe clamp. The tensile testing machine 21 is also electrically connected to a computing device 4 to output displacement electrical signals. When the servo motor applies a load to the simulated pipe 23, the tensile testing machine 21 can record the magnitude of the applied load and the displacement of the load point. As the load applied by the servo motor increases, the support 1 will deform under the action of the simulated pipe 23, and the tensile testing machine 21 will transmit this displacement value to the computing device 4.

[0110] In addition, the resistance strain gauge 3 is installed on the high-risk area of ​​the support 1 and is connected to the computing device 4. During the process of the tensile testing machine 21 applying the test load to the support 1, the support 1 undergoes micro-deformation, thereby compressing or stretching the strain gauge 3. This causes the strain gauge 3 to produce a change in output voltage as the load changes, which in turn outputs a stress electrical signal to the computing device 4. The computing device 4 collects the stress electrical signal and converts it into a local stress value for the support 1.

[0111] Therefore, the second processing unit is used to conduct an overall yield test on the support 1, and can simultaneously collect the overall displacement-load data and the stress-load data of its high-risk areas. Strain gauge 3 is used to measure the microstructural changes of the components of the support 1 during load-bearing, proving the consistency between its stress distribution and finite element simulation calculations, and collecting the load-bearing characteristics of the components. The displacement electrical signal output by the tensile testing machine 21 is used to verify the stability of the overall structure of the support 1, proving from a macroscopic perspective that the components of the support 1 are properly coordinated, and collecting data when the support 1 becomes unstable or loses its integrity, in order to analyze the impact of the failure of the support 1 on the pipeline system during actual operation.

[0112] In addition, the second control unit is connected to the second processing unit and the judgment module respectively, and is used to determine whether the support 1 has passed the actual working condition verification test based on the displacement-load data and stress-load data: if the support 1 is determined to have passed the actual working condition verification test, a third signal is sent to the judgment module; if the support 1 is determined to have failed the actual working condition verification test, a fourth signal is sent to the judgment module.

[0113] Specifically, the second control unit can be implemented using a computer program. The second control unit pre-stores the design load requirements for the support 1. After the operator inputs the displacement-load data and stress-load data into the second control unit, the second control unit plots the displacement-load curve and stress-load curve respectively based on the displacement-load data and stress-load data. Then, the overall yield load of the support 1 and the failure load when significant yield deformation occurs in the high-risk area are obtained from the displacement-load curve and stress-load curve. The second control unit compares the yield load of the support 1 with the design load requirements: if the yield load is less than the design load requirements, the support 1 is deemed to have failed the actual working condition verification test; if the yield load is greater than or equal to the design load requirements, the failure load of the high-risk area of ​​the support 1 is further compared with the design load requirements: if the failure load is less than the design load requirements, the support 1 is deemed to have failed the actual working condition verification test; if the failure load is greater than or equal to the design load requirements, the support 1 is deemed to have passed the actual working condition verification test.

[0114] Furthermore, in this embodiment, the judgment module includes a third control unit. The third control unit is connected to the first control unit and the second control unit, and is used to determine whether the support 1 can meet the design requirements when receiving the first signal and the third signal; or, when receiving the second signal and the fourth signal, to determine whether the support 1 cannot meet the design requirements.

[0115] Therefore, this support and hanger design verification device can prove that the support and hanger 1 structure meets the design requirements by combining theoretical calculations and actual working condition verification, so as to obtain more reliable judgment results.

[0116] Example 4

[0117] The present invention also discloses a support and hanger design system, including: a design module and a support and hanger 1 design verification device in embodiment 3.

[0118] The design module is used to design the structure of support 1. The support 1 design verification device is used to determine whether support 1 meets the design requirements: if support 1 is determined to meet the design requirements, then the structural design of support 1 is deemed qualified.

[0119] It should be noted that the design module can be a computer program window. After the staff completes the structural design of the support 1 through the design module, the support 1 is first tested theoretically using the first verification module in the aforementioned support 1 design verification device. If the structural design of the support 1 meets the theoretical test verification requirements, a small number of support 1 specimens are produced. The second verification module then tests the support 1 specimens under actual working conditions. If the support 1 passes both the theoretical verification test and the actual working condition verification test, it is determined that the support 1 meets the design requirements, and the structural design of the support 1 is deemed qualified.

[0120] If the support 1 fails to pass the theoretical verification test and the actual working condition verification test, it is determined that the support 1 does not meet the design requirements and needs to be thickened and reinforced. The support 1 is then used to verify whether the thickened and reinforced support 1 meets the design requirements again through the aforementioned support 1 design verification device. This process is repeated until the support 1 meets the design requirements.

[0121] Therefore, this support and hanger design system can design support and hanger structures that meet the design requirements.

[0122] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A support and hanger design verification device, characterized in that, include: The system consists of a first verification module, a second verification module, and a judgment module. The first verification module is used to conduct theoretical verification tests on the supports and hangers to obtain stress contour maps and displacement contour maps of the supports and hangers. The second verification module is connected to the first verification module and is used to conduct actual working condition verification tests on the support and hanger based on the stress cloud diagram and displacement cloud diagram of the support and hanger. The judgment module is connected to the first verification module and the second verification module respectively, and is used to determine whether the support and hanger meet the design requirements based on the results of the theoretical verification test and the actual working condition verification test; The first verification module includes: a modeling unit, a finite element calculation unit, and a first control unit; The modeling unit is used to establish the finite element model of the support and hanger. The finite element calculation unit, connected to the modeling unit, is used to perform finite element calculations on the finite element model of the support and hanger to obtain the stress contour map and displacement contour map of the support and hanger. The first control unit is connected to the finite element calculation unit and the judgment module respectively, and is used to determine whether the support and hanger has passed the theoretical verification test based on the stress cloud diagram and the displacement cloud diagram; The second verification module includes: a first processing unit, a second processing unit, and a second control unit; The first processing unit, connected to the finite element calculation unit, is used to determine the high-risk areas of the support based on the stress contour map and displacement contour map. The second processing unit, connected to the first processing unit, is used to perform an overall yield test on the support and hanger to collect overall displacement-load data of the support and hanger and stress-load data of the high-risk area; The second control unit is connected to the second processing unit and the judgment module respectively, and is used to determine whether the support has passed the actual working condition verification test based on the displacement-load data and the stress-load data.

2. A support and hanger design system, characterized in that, include: The design module and the support and hanger design verification device as described in claim 1, The design module is used to design the structure of the support and hanger. The support and hanger design verification device is used to determine whether the support and hanger meet the design requirements, and when it is determined that the support and hanger meet the design requirements, it is determined that the structural design of the support and hanger is qualified.

3. A method for verifying the design of a support and hanger, characterized in that, The method for the support and hanger design verification device according to claim 1 includes the following steps: S1: Theoretical verification tests were conducted on the supports and hangers to obtain stress contour maps and displacement contour maps of the supports and hangers. S2: Based on the stress cloud diagram and displacement cloud diagram of the support and hanger, conduct an actual working condition verification test on the support and hanger. S3: Based on the results of the theoretical verification test and the actual working condition verification test, determine whether the support and hanger meet the design requirements.

4. The method according to claim 3, characterized in that, Step S1 specifically includes: Establish the finite element model of the support and hanger. Finite element analysis was performed on the finite element model of the support to obtain the stress cloud diagram and displacement cloud diagram of the support. Based on the stress cloud diagram and the displacement cloud diagram, determine whether the support and hanger have passed the theoretical verification test.

5. The method according to claim 4, characterized in that, The step of determining whether the support has passed the theoretical verification test based on the stress cloud diagram and the displacement cloud diagram specifically includes: The theoretical yield load of the support and hanger is obtained by using the stress contour map and the displacement contour map. Obtain the design load requirements of the support and hanger. Compare the theoretical yield load with the design requirement load: If the theoretical yield load is greater than or equal to the design load, then the support and hanger is deemed to have passed the theoretical verification test. If the theoretical yield load is less than the design load, then the support has failed the theoretical verification test.

6. The method according to claim 5, characterized in that, Step S2 specifically includes: The high-risk areas of the supports and hangers are determined based on the stress and displacement cloud diagrams. An overall yield test was conducted on the support and hanger to collect overall displacement-load data of the support and hanger and stress-load data of the high-risk area; Based on the displacement-load data and the stress-load data, determine whether the support has passed the actual working condition verification test.

7. The method according to claim 6, characterized in that, The overall yield test of the support and hanger is conducted to collect overall displacement-load data of the support and hanger and stress-load data of the high-risk area, specifically including: The test load is slowly applied to the support and hanger until the support and hanger becomes unstable or loses its integrity. During this process, the overall displacement-load data and stress-load data of the support and hanger and the high-risk area are collected.

8. The method according to claim 7, characterized in that, The step of determining whether the support has passed the actual working condition verification test based on the displacement-load data and the stress-load data specifically includes: Based on the displacement-load data and the stress-load data, respectively, draw displacement-load curves and stress-load curves; The overall yield load of the support and the failure load when significant yield deformation occurs in the high-risk area are obtained by using the displacement-load curve and the stress-load curve, respectively. Compare the overall yield load of the support frame with the design load requirement: If the yield load is less than the design load, the support or hanger is deemed to have failed the actual working condition verification test. If the yield load is greater than or equal to the design load requirement, then the failure load of the high-risk area of ​​the support is further compared with the design load requirement: If the failure load is less than the design load, then the support and hanger is deemed to have failed the actual working condition verification test. If the failure load is greater than or equal to the design load, then the support is deemed to have passed the actual working condition verification test.

9. The method according to claim 8, characterized in that, Step S3 specifically includes: If the support and hanger pass both the theoretical verification test and the actual working condition verification test, then the support and hanger is determined to meet the design requirements. Otherwise, it is determined that the support bracket cannot meet the design requirements.

10. A method for designing a support bracket, characterized in that, include: Design the structure of the support and hanger. According to any one of claims 3-9, the support and hanger design verification method determines whether the support and hanger meet the design requirements. If the support and hanger meet the design requirements, the structural design of the support and hanger is determined to be qualified.

11. The design method according to claim 10, characterized in that, If it is determined that the support does not meet the design requirements, the support is thickened and reinforced, and the support design verification method according to any one of claims 3-9 is used to determine again whether the reinforced support meets the design requirements. This process is repeated until the support meets the design requirements.

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