Deformation Control Method of SHS Treatment on Inner Surface of Ultra-Long Pipeline

Abstract

The present invention provides a deformation control method for SHS treatment of the inner wall of an ultra-long pipeline, and belongs to the field of mechanical technology. The method comprises: using solidworks software to establish an initial three-dimensional model of oil pipeline clamping; importing the initial input script file into Abaqus software, setting constraints and loading loads, performing finite element analysis, generating an initial output script file containing initial deformation to Isight software; generating P groups of sample parameters through Isight software and importing them into solidworks software; modifying the initial three-dimensional model according to the sample parameters and importing them into Abaqus software; performing finite element analysis based on the input script sample file, generating an output script sample file containing sample deformation and importing it into Isight software; repeatedly executing S5 and S6 until all P groups of sample parameters are applied and P output script sample files are imported into Isight software; reading P output script sample files in Isight software, selecting the sample parameters corresponding to the output script sample file with the minimum sample deformation as the optimal result and outputting them.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, and in particular to a deformation control method for SHS processing of an inner wall of an ultra-long pipeline. Background Art

[0002] The inner wall of the pipeline will be corroded during the transportation of oil, so it is necessary to carry out anti-corrosion treatment on the inner wall of the oil pipeline. The SHS inner wall anti-corrosion coating process is widely used. The oil pipeline is clamped in a multi-clamp-point rotating cylinder, and the rotating cylinder drives the oil pipeline to rotate along the axis of the oil pipeline, so that the anti-corrosion layer is evenly attached to the inner wall of the oil pipeline.

[0003] The coaxial error of the common oil pipeline clamping and centering device is large, and they are all rigid designs, which leads to serious bending of the oil pipeline after the inner wall anti-corrosion coating is prepared by the SHS process, and the first-time qualified rate is low. In order to reduce the coaxial error and suppress the offset bending of the oil pipeline caused by centrifugal force during rotation, the prior art CN202121463488.3 provides a diamond-shaped flexible clamp. When working, the oil pipeline is clamped by the roller parts of multiple diamond-shaped clamps in a point-contact manner. When the tubular positioning bracket rotates, it drives the oil pipeline to rotate. The diamond-shaped clamp generates a contraction force under the action of centrifugal force to achieve the effect of suppressing offset bending. The point-contact clamping method realized by the prior art using a diamond-shaped clamp with rollers can theoretically achieve a better protection effect, but the effect of the number of clamping contacts and the clamping position on the deformation of the oil pipeline is unknown, and it is difficult to achieve deformation control in actual use. Summary of the invention

[0004] In view of this, the present invention provides a deformation control method for SHS treatment of the inner wall of an ultra-long pipeline, which is used to analyze the influence of the number of clamping contacts and the clamping position on the deformation of the oil pipeline during the SHS treatment process and further realize the deformation control of the ultra-long pipeline.

[0005] The technical solution adopted by the embodiment of the present invention to solve the technical problem is:

[0006] A deformation control method for SHS treatment of the inner wall of an ultra-long pipeline, comprising:

[0007] Step S1, using solidworks software to establish an initial three-dimensional model of the oil pipeline clamping, and save it as an initial input script file in a general format, wherein the initial three-dimensional model includes an oil pipeline and x0 groups of diamond clamps arranged on the outer wall of the oil pipeline, wherein the x0 groups of diamond clamps are evenly spaced along the axial direction, the rollers of the diamond clamps are tangent to the outer wall of the oil pipeline at the contact points, the number of diamond clamps in each group is y, the contact points of the y diamond clamps are evenly distributed along the radial direction, and the dimensions of the oil pipeline are respectively an outer diameter d1, an inner diameter d2, and a pipe length L;

[0008] Step S2, importing the initial input script file into Abaqus software, setting constraints and loading loads, and performing finite element analysis to calculate the initial deformation of the initial three-dimensional model, and generating an initial output script file containing the initial deformation, wherein the constraints include the rotation speed of the oil pipeline, the material properties of the oil pipeline, the clamping pressure of a single roller, the material properties of the roller, and the eccentricity of the oil pipeline;

[0009] Step S3, integrating the initial input script file and the initial output script file into Isight software, and integrating solidworks components, Abaqus components and calculator components based on the Isight software;

[0010] Step S4, according to the initial input script file and the initial output script file, generate P groups of sample parameters through the Isight software and import them into the solidworks software in sequence, each group of sample parameters includes the number of diamond fixture groups x i And the corresponding group spacing D i ;

[0011] Step S5, in the solidworks software, modifying the initial three-dimensional model according to the input sample parameters, obtaining a new three-dimensional model and saving it as an input script sample file, and importing it into the Abaqus software;

[0012] Step S6, in the Abaqus software, performing finite element analysis based on the constraint conditions and the input script sample file, calculating the sample deformation, generating an output script sample file containing the sample deformation, and importing the output script sample file into the Isight software;

[0013] Step S7, repeating step S5 and step S6 until all the sample parameters of the P groups are applied and the P output script sample files are imported into the Isight software;

[0014] Step S8, in the Isight software, read the P output script sample files, select the sample parameters corresponding to the output script sample file with the smallest sample deformation as the optimal result and output the optimal result.

[0015] Preferably, the step S2 imports the initial input script file into the Abaqus software, sets constraints and loads, and performs finite element analysis, including:

[0016] Step S21, extracting structural features of the initial three-dimensional model for finite element modeling;

[0017] Step S22, setting the material properties of the oil pipeline and the roller;

[0018] Step S23, setting the clamping pressure F of a single roller 压 and the oil pipeline speed n, accordingly, the maximum friction force F provided by a single roller 单 for:

[0019] F 单 =F 压 ×μc

[0020] Wherein, μ is the friction coefficient of the roller material, c is the safety factor, therefore, the friction force F provided by all rollers in the initial three-dimensional model is 合 for:

[0021] F 合 =x0y×F 单

[0022] The friction force F 合 The maximum moment M provided to the oil pipeline 合 for:

[0023] M 合 =F 合 ×

[0024] Wherein, r is the mass equivalent radius of the oil pipeline;

[0025] The starting torque M required for the oil pipeline to start from a static state to a predetermined speed n 启 for:

[0026] M 启 =J×β

[0027] J=1 / 2mr 2

[0028] β=2πn / t

[0029] Wherein, m is the mass of the oil pipeline, and t is the starting time taken by the oil pipeline to start from a static state to the predetermined speed n;

[0030] Step S24, defining the contact mode between the oil pipeline and the roller as two cylinders in cross contact, and the expression of the contact area A of a single contact point is:

[0031]

[0032] Wherein, d is the pressure depth between the roller and the oil pipeline, R1 is the radius of the oil pipeline, R1=d1 / 2, R2 is the radius of the roller, and the equation relationship between the pressure depth d and the normal force F is:

[0033]

[0034] F=F 单

[0035] Wherein, E1 is the elastic modulus of the oil pipeline, E2 is the elastic modulus of the roller, V1 is the Poisson's ratio of the oil pipeline, and V2 is the Poisson's ratio of the roller;

[0036] Step S25, setting the eccentricity h of the oil pipeline;

[0037] Step S26, running the initial three-dimensional model, calculating the initial deformation, and outputting the initial output script file.

[0038] Preferably, the step S4 of generating P groups of sample parameters by the Isight software and sequentially importing them into the solidworks software includes:

[0039] Step S41, in the Isight software, setting the value range of the sample parameter and the total number of samples P, wherein the value range of the sample parameter includes the value range of the number of diamond fixture groups and the value range of the group spacing;

[0040] Step S42, using the Latin hypercube sampling method, randomly select a value from the value range of the number of diamond-shaped fixture groups and the value range of the group spacing to form a group of sample parameters, and obtain a total of P groups of sample parameters;

[0041] Step S43, generating P groups of sample parameters through the Isight software and importing them into the solidworks software in sequence.

[0042] Preferably, step S8 reads P output script sample files, selects the sample parameters corresponding to the output script sample file with the smallest sample deformation as the optimal result, and outputs the optimal result, including:

[0043] Step S81, the initial output script file is used as the initial comparison object, and after comparing the imported output script sample file with the initial output script file, the script file with the smaller deformation amount is used as the next comparison object;

[0044] Step S82, the P output script sample files are compared in turn according to the order of import, and finally an output script sample file with the minimum sample deformation amount is obtained;

[0045] Step S83, outputting the sample parameters corresponding to the output script sample file with the minimum sample deformation as the optimal result.

[0046] Preferably, when the dimensions of the oil pipeline are outer diameter d1 = 130 mm, inner diameter d2 = 110 mm, and pipe length L = 10 m,

[0047] The number of diamond clamp groups ranges from [7, 15], and the group spacing ranges from 500mm to 1500mm.

[0048] Preferably, the number of the diamond-shaped clamps in each group is 3.

[0049] It can be seen from the above technical scheme that the deformation control method for SHS treatment of the inner wall of an ultra-long pipeline provided by an embodiment of the present invention first uses solidworks software to establish an initial three-dimensional model of the oil pipeline clamping, and saves it as an initial input script file in a general format, then imports the initial input script file into Abaqus software, sets constraints and loading loads, and performs finite element analysis. After generating an initial output script file containing an initial deformation, the initial input script file and the initial output script file are integrated into Isight software, and solidworks components, Abaqus components, and calculator components are integrated based on Isight software; according to the initial input script file and the initial output script file, a P group of sample parameters are generated by Isight software and imported into solidwo in sequence. Rks software, in solidworks software, modify the initial three-dimensional model according to the input sample parameters, obtain a new three-dimensional model and save it as an input script sample file, and import it into Abaqus software, in Abaqus software, perform finite element analysis based on constraint conditions and input script sample files, calculate the sample deformation, generate an output script sample file containing the sample deformation, and import the output script sample file into Isight software, repeat the above operation until all P groups of sample parameters are applied, import P output script sample files into Isight software, read P output script sample files in Isight software, select the sample parameters corresponding to the output script sample file with the minimum sample deformation as the optimal result and output the optimal result. The method of the present invention can be used to analyze the influence of the number of clamping contacts and the clamping position on the deformation of the oil pipeline during the SHS process and further realize the deformation control of the super-long pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 The figure is a flow chart of the deformation control method of the ultra-long pipeline inner wall SHS treatment according to the present invention.

[0051] Figure 2This is a schematic diagram of using a diamond-shaped flexible clamp in the prior art to support an oil pipeline.

[0052] Figure 3 This is the front view of the diamond-shaped flexible fixture.

[0053] Figure 4 This is a structural diagram of a single diamond-shaped fixture.

[0054] Figure 5 Schematic diagram of the finite element model of the oil pipeline in clamping state.

[0055] Figure 6 Schematic diagram of the coordinates of the pipe in contact with the diamond fixture.

[0056] Figure 7 This is a schematic diagram of the oil pipeline deformation cloud map.

[0057] In the figure: a diamond-shaped flexible clamp 10, a support seat 20, a tubular positioning bracket 30, a diamond-shaped clamp 40, a guide rod 401, a movable sleeve 402, a connecting rod 403, an anti-slip roller 404, and a spring 405. DETAILED DESCRIPTION

[0058] The technical scheme and technical effects of the present invention are further elaborated in detail below in conjunction with the accompanying drawings of the present invention.

[0059] The present invention provides a deformation control method for the inner wall of an ultra-long pipeline during SHS treatment, specifically, the deformation caused by the fixture during the process of fixing the inner wall anti-corrosion process device of the oil pipeline and driving the oil pipeline to rotate, through simulation and force analysis, Figure 2 The working conditions shown give a suitable fixture distribution design scheme. Combining the integrated optimization capabilities of solidworks, Abaqus and isight, the constraints and loads of the simulation model are given based on the actual working conditions, and the optimal design results are calculated and analyzed.

[0060] In actual use, oil pipelines pass through Figure 2 and Figure 3 The diamond-shaped flexible clamp 10 shown in the figure supports and fixes, and the diamond-shaped flexible clamp 10 is composed of a support seat 20, a tubular positioning bracket 30, and a diamond-shaped clamp 40, wherein the support seat 20 is sleeved and connected with the tubular positioning bracket 30, and a plurality of positioning grooves are arranged on the tubular positioning bracket 30, and the horizontal ends of the diamond-shaped clamp 40 are fixedly connected with the two sides of the positioning groove, and the inner side of the diamond-shaped clamp 40 contacts the outer wall of the oil pipeline to fix the oil pipeline, such as Figure 4As shown, the diamond clamp 40 includes a guide rod 401, two movable sleeves 402, a plurality of connecting rods 403, an anti-skid roller 404, and a spring 405. The two ends of the guide rod 401 are fixedly connected to the positioning groove, the movable sleeve 402 is sleeved and connected to the guide rod 401, the two ends of the spring 405 are fixedly connected to the movable sleeve 402, and the spring 405 is coaxial with the guide rod 401. The two sides of the outer wall of the movable sleeve 402 are respectively hinged to one end of a connecting rod 403, and the other end of the connecting rod 403 is hinged to the adjacent connecting rod 403. The anti-skid roller 404 is located on the pins of the two hinged connecting rods 403. Figure 4 It can be seen that the oil pipeline is actually connected to only a number of groups of diamond clamps 40, each group of diamond clamps 40 has three, located on the outer surface of the same radial section. Correspondingly, the three roller contact points on the outer surface of the oil pipeline are spaced at the same distance to ensure uniform force. The present invention simulates and analyzes the influence of the number of diamond clamps on the deformation of the oil pipeline during the SHS treatment process of the inner wall of the oil pipeline. Therefore, in the simulation modeling, it is not necessary to connect the entire diamond clamps. Figure 2 The clamp modeling shown only extracts the diamond clamp 40 that directly acts on the oil pipeline and models it at the corresponding position.

[0061] like Figure 1 As shown, the deformation control method for the SHS treatment of the inner wall of an ultra-long pipeline provided by the present invention specifically comprises the following steps:

[0062] Step S1, use solidworks software to create Figure 5 The initial three-dimensional model of the oil pipeline clamping shown in the figure is saved as an initial input script file in a general format, wherein the initial three-dimensional model includes the oil pipeline and the x0 group set on the outer wall of the oil pipeline Figure 4 The diamond fixture shown is a simple simulation Figure 2 The working condition shown, in which x0 groups of diamond clamps are evenly spaced along the axial direction, the rollers of the diamond clamps are tangent to the outer wall of the oil pipeline at the contact point, the number of diamond clamps in each group is y, and the contact points of the y diamond clamps are evenly distributed along the radial direction. The dimensions of the oil pipeline are outer diameter d1, inner diameter d2, and pipe length L;

[0063] Step S2, importing the initial input script file into the Abaqus software, setting constraints and loading loads, and performing finite element analysis to calculate the initial deformation of the initial three-dimensional model, and generating an initial output script file containing the initial deformation, wherein the constraints include the oil pipeline rotation speed, the material properties of the oil pipeline, the clamping pressure of a single roller, the material properties of the roller, and the eccentricity of the oil pipeline;

[0064] Step S3, integrating the initial input script file and the initial output script file into the Isight software, and integrating the solidworks component, the Abaqus component, and the calculator component based on the Isight software to avoid the problem of fixture model size interference;

[0065] Step S4, according to the initial input script file and the initial output script file, generate P groups of sample parameters through the Isight software and import them into the solidworks software in sequence, each group of sample parameters includes the number of diamond fixture groups x i And the corresponding group spacing D i ;

[0066] Step S5, in the solidworks software, modify the initial three-dimensional model according to the input sample parameters, obtain a new three-dimensional model and save it as an input script sample file, and import it into the Abaqus software;

[0067] Step S6, in the Abaqus software, finite element analysis is performed based on the constraint conditions and the input script sample file, the sample deformation is calculated, an output script sample file including the sample deformation is generated, and the output script sample file is imported into the Isight software;

[0068] Step S7, repeating steps S5 and S6 until all P groups of sample parameters are applied and P output script sample files are imported into the Isight software;

[0069] Step S8, in the Isight software, read P output script sample files, select the sample parameters corresponding to the output script sample file with the smallest sample deformation as the optimal result and output the optimal result.

[0070] Among them, the specific implementation steps of step S2 for importing the initial input script file into the Abaqus software, setting the constraint conditions and loading the load, and performing the finite element analysis include:

[0071] Step S21, extracting structural features of the initial three-dimensional model for finite element modeling;

[0072] Step S22, setting the material properties of the oil pipeline and the roller;

[0073] Step S23, determine the start and stop force balance conditions, and set the clamping pressure F of a single roller 压 and the oil pipeline speed n, accordingly, the maximum friction force F provided by a single roller 单 for:

[0074] F 单 =F 压 ×μc (1)

[0075] Among them, μ is the friction coefficient of the roller material, c is the safety factor, so the friction force F provided by all rollers in the initial three-dimensional model is 合 for:

[0076] F 合 =x0y×F 单 (2)

[0077] Friction force F 合 The maximum moment M provided to the oil pipeline 合 for:

[0078] M 合 =F 合 ×r (3)

[0079] Where r is the mass equivalent radius of the oil pipeline;

[0080] The starting torque M required for the oil pipeline to start from static to the predetermined speed n 启 for:

[0081] M 启 =J×β(4)

[0082] J=1 / 2mr 2 (5)

[0083] β=2πn / t (6)

[0084] Among them, m is the mass of the oil pipeline, t is the starting time of the oil pipeline from static start to the predetermined speed n. 启 ≤M 合 Can meet the start and stop requirements of parts;

[0085] Step S24, as Figure 6 As shown in the figure, according to the actual contact between the pipeline and the diamond clamp, the contact mode is determined to be the cross contact of two cylinders. The contact mode between the oil pipeline and the roller is defined as the cross contact of two cylinders. The expression of the contact area A of a single contact point is:

[0086]

[0087] Where d is the pressure depth between the roller and the oil pipeline, R1 is the radius of the oil pipeline, R1 = d1 / 2, R2 is the radius of the roller, and the contact area between the two cylinders is calculated according to the Hertz contact theory. The equation relationship between the pressure depth d and the normal force F is:

[0088]

[0089] F=F 单 (11)

[0090] Among them, E1 is the elastic modulus of the oil pipeline, E2 is the elastic modulus of the roller, V1 is the Poisson's ratio of the oil pipeline, and V2 is the Poisson's ratio of the roller;

[0091] Step S25, setting the oil pipeline eccentricity h;

[0092] Step S26, running the initial three-dimensional model, calculating the initial deformation, and outputting the initial output script file.

[0093] Furthermore, the specific implementation process of step S4 of generating P group sample parameters by Isight software and importing them into solidworks software in sequence includes:

[0094] Step S41, in the Isight software, setting the value range of the sample parameters and the total number of samples P, wherein the value range of the sample parameters includes the value range of the number of diamond fixture groups and the value range of the group spacing;

[0095] Step S42, using the Latin hypercube sampling method, randomly select a value from the value range of the number of diamond clamp groups and the value range of the group spacing to form a group of sample parameters, and obtain a total of P groups of sample parameters;

[0096] Step S43, generate P groups of sample parameters through Isight software and import them into SolidWorks software in sequence.

[0097] Further, step S8 reads P such as Figure 7 The specific implementation process of selecting the sample parameters corresponding to the output script sample file with the minimum sample deformation as the optimal result and outputting the optimal result includes:

[0098] Step S81, the initial output script file is used as the initial comparison object, and after comparing the imported output script sample file with the initial output script file, the script file with the smaller deformation amount is used as the next comparison object;

[0099] Step S82, the P output script sample files are compared in turn according to the order of import, and finally an output script sample file with the minimum sample deformation amount is obtained;

[0100] Step S83, outputting the sample parameters corresponding to the output script sample file with the minimum sample deformation as the optimal result.

[0101] An example with specific dimensions is provided below for illustration. The dimensions of the oil pipeline are set as outer diameter d1=130mm, inner diameter d2=110mm, and pipe length L=10m. During the initial modeling in SolidWorks, the number of diamond clamps in each group is 3 and evenly distributed along the radial direction. There are 9 groups of diamond clamps in total, and each group is spaced 1 meter apart along the axial direction. Therefore, there are a total of 27 diamond clamps involved in the modeling. There are 27 contact points on the outer wall of the oil pipeline, and an initial input script file in .IGS format is generated.

[0102] Then import the initial input script file into the Abaqus software, set the constraints and loads. The material of the oil pipeline is carbon steel, and its material properties are shown in Table 1:

[0103]

[0104] Table 1

[0105] In addition, it is necessary to set the material properties of the roller, the rotation speed of the oil pipeline, the clamping pressure of a single roller, and the eccentricity of the oil pipeline. When dividing the finite element mesh, for the parts with regular shapes, the sweeping method is used to complete the mesh division, and regular tetrahedral units are generated in the model.

[0106] Based on the manufacturing tolerance of the oil pipeline, the static and dynamic process deformation analysis of the pipeline is carried out. Compared with the static pipeline finite element simulation, the dynamic simulation is to give it a speed n (1000rpm) and eccentricity h during the clamping process, and further calculate the starting torque M required for the oil pipeline to start from static to the predetermined speed n. 启 , the contact area A of a single contact point and other data to analyze its deformation. After the analysis is completed, the initial output script file of the .py file is generated.

[0107] The initial input script file and the initial output script file are integrated into the Isight software. Based on the Isight software, the solidworks component, the Abaqus component and the calculator component are integrated. Then, samples are generated according to the sample range. For example, in the present invention, the variables are the number of diamond fixture groups and the group spacing. Therefore, the sample value ranges of these two variables can be preset first. Among them, the value range of the number of diamond fixture groups is [7,15], and the value range of the group spacing is 500mm-1500mm. According to the value characteristics, the value range of the number of diamond fixture groups must be an integer, and the value range of the group spacing can have decimals. If the number of sample groups P is set to 1000, an integer x is randomly selected from [7,15]. i , randomly select a value D from the range of 500mm-1500mm i , a total of 1000 groups of non-repetitive samples were formed and input into the solidworks software;

[0108] In the solidworks software, the initial three-dimensional model is modified in accordance with each set of sample parameters in turn, a new three-dimensional model is obtained and saved as an input script sample file, and imported into the Abaqus software, a finite element analysis is performed based on the original set constraints and the input script sample file, and the output script sample file is imported into the Isight software. In the Isight software, the sample deformation in the output script sample file can be automatically extracted for comparison, and the current optimal solution is displayed on the interface from time to time by updating and replacing. After 1000 sample deformation comparisons, the sample parameters corresponding to the output script sample file with the minimum sample deformation that are finally retained become the optimal results. Therefore, the Isight software can screen and output the optimal results by automatic screening. Through the method of the present invention, the optimal combination of the number of fixture groups and the spacing between groups can be scientifically and effectively analyzed.

[0109] The deformation control method for SHS treatment of the inner wall of an ultra-long pipeline provided in an embodiment of the present invention comprehensively applies SolidWorks parametric modeling and Abaqus finite element analysis functions in the environment of multidisciplinary optimization design software iSIGHT to achieve integrated and automatic modeling and analysis. It adopts steps such as experimental design, response surface fitting and response value multi-objective Latin hypercube optimization, and can effectively analyze the influence of the number of clamping contacts and the clamping position on the deformation of the oil pipeline during the SHS treatment process. It can quickly and efficiently simulate a large number of experiments based on the simulation model, and automatically analyze the optimal clamping scheme according to the experimental results to achieve deformation control of the ultra-long pipeline.

[0110] What is disclosed above is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A deformation control method for the inner wall of an ultra-long pipeline during SHS treatment, characterized in that: include: Step S1, using solidworks software to establish an initial three-dimensional model of the oil pipeline clamping, and save it as an initial input script file in a general format, wherein the initial three-dimensional model includes an oil pipeline and x0 groups of diamond clamps arranged on the outer wall of the oil pipeline, wherein the x0 groups of diamond clamps are evenly spaced along the axial direction, the rollers of the diamond clamps are tangent to the outer wall of the oil pipeline at the contact points, the number of diamond clamps in each group is y, the contact points of the y diamond clamps are evenly distributed along the radial direction, and the dimensions of the oil pipeline are respectively an outer diameter d1, an inner diameter d2, and a pipe length L; Step S2, importing the initial input script file into Abaqus software, setting constraints and loading loads, and performing finite element analysis to calculate the initial deformation of the initial three-dimensional model, and generating an initial output script file containing the initial deformation, wherein the constraints include the rotation speed of the oil pipeline, the material properties of the oil pipeline, the clamping pressure of a single roller, the material properties of the roller, and the eccentricity of the oil pipeline; Step S3, integrating the initial input script file and the initial output script file into Isight software, and integrating solidworks components, Abaqus components and calculator components based on the Isight software; Step S4, according to the initial input script file and the initial output script file, generate P groups of sample parameters through the Isight software and import them into the solidworks software in sequence, each group of sample parameters includes the number of diamond fixture groups x i And the corresponding group spacing D i ; Step S5, in the solidworks software, modifying the initial three-dimensional model according to the input sample parameters, obtaining a new three-dimensional model and saving it as an input script sample file, and importing it into the Abaqus software; Step S6, in the Abaqus software, performing finite element analysis based on the constraint conditions and the input script sample file, calculating the sample deformation, generating an output script sample file containing the sample deformation, and importing the output script sample file into the Isight software; Step S7, repeating step S5 and step S6 until all the sample parameters of the P groups are applied and the P output script sample files are imported into the Isight software; Step S8, in the Isight software, read the P output script sample files, select the sample parameters corresponding to the output script sample file with the smallest sample deformation as the optimal result and output the optimal result.

2. The deformation control method for the inner wall of an ultra-long pipe during SHS treatment according to claim 1, characterized in that: The step S2 imports the initial input script file into the Abaqus software, sets constraints and loads, and performs finite element analysis, including: Step S21, extracting structural features of the initial three-dimensional model for finite element modeling; Step S22, setting the material properties of the oil pipeline and the roller; Step S23, setting the clamping pressure F of the single roller 压 and the oil pipeline speed n, accordingly, the maximum friction force F provided by a single roller 单 for: F 单 =F 压 ×μc Wherein, μ is the friction coefficient of the roller material, c is the safety factor, therefore, the friction force F provided by all rollers in the initial three-dimensional model is 合 for: F 合 =x0y×F 单 The friction force F 合 The maximum moment M provided to the oil pipeline 合 for: M 合 =F 合 ×r Wherein, r is the mass equivalent radius of the oil pipeline; The starting torque M required for the oil pipeline to start from a static state to a predetermined speed n 启 for: M 启 =J×β <h2 style=";text-align:left;direction:ltr">J = 1 / 2mr<h2 style=";text-align:left;direction:ltr"> 2 β=2πn / t Wherein, m is the mass of the oil pipeline, and t is the starting time taken by the oil pipeline to start from a static state to the predetermined speed n; Step S24, defining the contact mode between the oil pipeline and the roller as two cylinders in cross contact, and the expression of the contact area A of a single contact point is: Wherein, d is the pressure depth between the roller and the oil pipeline, R1 is the radius of the oil pipeline, R1=d1 / 2, R2 is the radius of the roller, and the equation relationship between the pressure depth d and the normal force F is: F=F 单 Wherein, E1 is the elastic modulus of the oil pipeline, E2 is the elastic modulus of the roller, V1 is the Poisson's ratio of the oil pipeline, and V2 is the Poisson's ratio of the roller; Step S25, setting the eccentricity h of the oil pipeline; Step S26, running the initial three-dimensional model, calculating the initial deformation, and outputting the initial output script file.

3. The deformation control method for the inner wall of an ultra-long pipeline during SHS treatment according to claim 2, characterized in that: The step S4 generates P groups of sample parameters by the Isight software and imports them into the solidworks software in sequence, including: Step S41, in the Isight software, setting the value range of the sample parameter and the total number of samples P, wherein the value range of the sample parameter includes the value range of the number of diamond fixture groups and the value range of the group spacing; Step S42, using the Latin hypercube sampling method, randomly select a value from the value range of the number of diamond-shaped fixture groups and the value range of the group spacing to form a group of sample parameters, and obtain a total of P groups of sample parameters; Step S43, generating P groups of sample parameters through the Isight software and importing them into the solidworks software in sequence.

4. The deformation control method for the inner wall of an ultra-long pipe during SHS treatment according to claim 3, characterized in that: Step S8 reads P output script sample files, selects the sample parameters corresponding to the output script sample file with the smallest sample deformation as the optimal result and outputs the optimal result, including: Step S81, the initial output script file is used as the initial comparison object, and after comparing the imported output script sample file with the initial output script file, the script file with the smaller deformation amount is used as the next comparison object; Step S82, the P output script sample files are compared in turn according to the order of import, and finally an output script sample file with the minimum sample deformation amount is obtained; Step S83, outputting the sample parameters corresponding to the output script sample file with the minimum sample deformation as the optimal result.

5. The deformation control method for the inner wall of an ultra-long pipeline during SHS treatment according to claim 4, characterized in that: When the dimensions of the oil pipeline are outer diameter d1=130mm, inner diameter d2=110mm, and pipe length L=10m, the number of diamond clamp groups ranges from [7,15], and the group spacing ranges from 500mm to 1500mm.

6. The deformation control method for the inner wall of an ultra-long pipeline during SHS treatment according to claim 5, characterized in that: The number of the diamond-shaped clamps in each group is 3.

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