Lining gathering and transportation pipeline stress coupling analysis system and analysis method

Abstract

The invention relates to the technical field of electric data processing, and particularly discloses a lining gathering and transportation pipeline stress coupling analysis system and method, the analysis system is provided with an environment evaluation module, a stress coupling evaluation module and a stress coupling module, and the problems that a traditional analysis method often depends on a simplified physical model and hypothesis, and the analysis efficiency is low are solved. The system solves the problem that the existing pipeline behavior prediction method is short of effective data integration capability and may cause inaccurate prediction of pipeline behaviors under actual working conditions, and is helpful to more accurately predict possible problems of the pipeline in actual operation, so that preventive measures can be taken in advance, and the system can predict stress responses of the pipeline under different environmental conditions and corrosion states. The stress coupling state is monitored and evaluated, the maintenance work can be more effectively planned, excessive maintenance or neglect of potential risk points is avoided, and the service life of the pipeline is prolonged.

Description

Technical Field

[0001] This invention relates to the field of electrical data processing technology, specifically to a stress coupling analysis system and method for lined gathering and transportation pipelines. Background Technology

[0002] Lined pipelines are used in the oil and gas and chemical industries to transport highly corrosive or high-temperature fluids, and their safety is of paramount importance. Since these pipelines are often located in environments that are difficult for humans to monitor directly (such as the seabed or underground), any structural failure can lead to serious environmental and economic losses. Stress coupling analysis helps predict and avoid potential structural problems and identify risks in advance. In extreme environments, such as the seabed or cold regions, pipelines are subject to complex external influences, which can affect the structural integrity of the pipeline and its lining. Studying stress coupling analysis systems can help design more robust pipeline systems to withstand these complex external pressures.

[0003] For example, the invention patent with publication number CN117993236A discloses a method for correcting the stress analysis of cold-bent bends in gas field gathering and transmission pipelines. Based on the residual stress distribution law of cold-bent bends and finite element quantitative calculation, combined with the stress characteristics of cold-bent bends under pipeline system operation, and following the basic principles of buried pipeline stress verification and the input and output characteristics of existing buried pipeline system stress analysis software, it proposes to use finite element simulation of cold-bent bends to obtain residual strain and residual stress. Furthermore, it proposes to use the material stress relationship corresponding to residual strain to obtain the stress value corresponding to the maximum residual strain, and then obtain the yield strength correction coefficient. Combined with pipeline system stress analysis software, it optimizes the primary stress calculation method, primary stress verification index, and secondary stress verification index, etc., to achieve the purpose of coupling finite element simulation analysis and pipeline system stress analysis, overcome the shortcomings of cold-bent bend analysis in current pipeline system stress analysis, and improve the rationality of pipeline system stress analysis.

[0004] Currently, there are still some shortcomings in the research on stress coupling analysis system for lined gathering and transportation pipelines. Specifically, traditional analysis methods often rely on simplified physical models and assumptions, and lack effective data integration capabilities. This may lead to inaccurate predictions of pipeline behavior under actual working conditions, potentially resulting in over-design or waste of resources, increased material and construction costs, and the lack of effective data integration capabilities means that real-time data from field sensors cannot be fully utilized, slowing down the response speed and decision-making efficiency to emergencies. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a stress coupling analysis system and method for lined gathering and transportation pipelines, which can effectively solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: In its first aspect, the present invention provides a stress coupling analysis system for lined gathering and transportation pipelines, comprising an environmental assessment module, a stress coupling assessment module, and a stress coupling module, wherein: the environmental assessment module is used to obtain stress coupling assessment deviation values ​​based on an environmental state dataset; to obtain beach and sea environment assessment values ​​based on a beach and sea environment state dataset; and to obtain corrosion and biofouling assessment values ​​based on a corrosion and biofouling dataset; the stress coupling assessment module is used to import the stress coupling assessment deviation values, beach and sea environment assessment values, and corrosion and biofouling assessment values ​​into a stress coupling assessment model to obtain stress coupling assessment values; and the stress coupling module is used to determine the stress coupling state of the lined gathering and transportation pipeline based on the stress coupling assessment values.

[0007] As a further solution, the environmental status dataset specifically includes the ambient temperature, water pressure, and wave impact speed of the environment where the lining pipeline is located.

[0008] As a further solution, based on the acquired environmental condition dataset, the stress coupling assessment deviation value is obtained by comparison. The specific analysis process is as follows: Based on the acquired environmental condition dataset, the environmental condition assessment value of the lined gathering and transportation pipeline is obtained through comprehensive analysis. The environmental condition assessment value of the lined gathering and transportation pipeline is used as the basis for the analysis of the stress coupling assessment deviation value obtained by comparison. The environmental condition assessment value of the lined gathering and transportation pipeline is compared with the stress coupling assessment deviation value corresponding to the environmental condition assessment value of each lined gathering and transportation pipeline stored in the database to obtain the stress coupling assessment deviation value corresponding to the environmental condition assessment value of the lined gathering and transportation pipeline.

[0009] As a further approach, based on the acquired dataset of the beach and sea environment status of the pipeline lining, a comprehensive analysis is conducted to obtain the beach and sea environment assessment value. The specific analysis process is as follows: The dataset of the beach and sea environment status of the pipeline lining is acquired, specifically including wave impact force, current impact force, sea ice impact force, and land settlement shear force. Based on the acquired dataset, a comprehensive analysis is conducted to obtain the beach and sea environment assessment value, which serves as the basis for the stress coupling assessment value obtained through the comprehensive analysis.

[0010] As a further step, the specific analysis process for the beach and sea environment assessment values ​​is as follows:

[0011]

[0012] In the formula, β is the marine environment assessment value, hl is the wave impact force of the marine environment of the pipeline lining, hu is the current impact force of the marine environment of the pipeline lining, hb is the sea ice impact force of the marine environment of the pipeline lining, cj is the ground settlement shear force of the marine environment of the pipeline lining, σ1 is the set compensation factor for the wave impact force of the marine environment of the pipeline lining, σ2 is the set compensation factor for the current impact force of the marine environment of the pipeline lining, σ3 is the set compensation factor for the sea ice impact force of the marine environment of the pipeline lining, and σ4 is the set compensation factor for the ground settlement shear force of the marine environment of the pipeline lining.

[0013] As a further approach, based on the acquired corrosion and biofouling dataset, a comprehensive analysis is conducted to obtain corrosion and biofouling assessment values. The specific analysis process is as follows: A corrosion and biofouling dataset is acquired, which specifically includes the corrosion area of ​​the external structure of the lined gathering and transportation pipeline, the corrosion area of ​​the inner lining structure of the lined gathering and transportation pipeline, and the biofouling area of ​​the external structure of the lined gathering and transportation pipeline; based on the acquired corrosion and biofouling dataset, a comprehensive analysis is conducted to obtain corrosion and biofouling assessment values, which serve as the basis for the comprehensive analysis to obtain stress coupling assessment values.

[0014] As a further step, the corrosion and biofouling assessment values ​​are analyzed in the following manner:

[0015]

[0016] In the formula, γ is the corrosion and bioattachment assessment value, wf is the corrosion area of ​​the external structure of the lined gathering and transportation pipeline, nf is the corrosion area of ​​the inner lining structure of the lined gathering and transportation pipeline, ws is the bioattachment area of ​​the external structure of the lined gathering and transportation pipeline, τ1 is the set compensation factor for the corrosion area of ​​the external structure of the lined gathering and transportation pipeline, τ2 is the set compensation factor for the corrosion area of ​​the inner lining structure of the lined gathering and transportation pipeline, τ3 is the set compensation factor for the bioattachment area of ​​the external structure of the lined gathering and transportation pipeline, and e is a natural constant.

[0017] As a further approach, a comprehensive analysis is conducted to obtain the stress coupling assessment value. The specific analysis process is as follows: the stress coupling assessment deviation value, the beach and sea environment assessment value, and the corrosion and biofouling assessment value are imported into the stress coupling assessment model, and a comprehensive analysis is conducted to obtain the stress coupling assessment value. The stress coupling assessment value serves as the analytical basis for judging the stress coupling state of the inner-lined gathering and transportation pipeline.

[0018] As a further approach, the stress coupling state of the lined gathering and transportation pipeline is determined based on the stress coupling evaluation value. The specific analysis process is as follows: the stress coupling evaluation value is compared with the stress coupling reference evaluation value stored in the database; if the stress coupling evaluation value is higher than the stress coupling reference evaluation value, the stress coupling state of the lined gathering and transportation pipeline corresponding to the stress coupling evaluation value is excellent; if the stress coupling evaluation value is equal to the stress coupling reference evaluation value, the stress coupling state of the lined gathering and transportation pipeline corresponding to the stress coupling evaluation value is good; if the stress coupling evaluation value is lower than the stress coupling reference evaluation value, the stress coupling state of the lined gathering and transportation pipeline corresponding to the stress coupling evaluation value is poor.

[0019] The second aspect of this invention provides a stress coupling analysis method for lined gathering and transportation pipelines, comprising the following steps: acquiring an environmental state dataset; comparing the acquired environmental state dataset to obtain a stress coupling assessment deviation value; acquiring a beach and sea environment state dataset for the lined gathering and transportation pipeline; comprehensively analyzing the acquired beach and sea environment state dataset to obtain a beach and sea environment assessment value; acquiring a corrosion and biofouling dataset; comprehensively analyzing the acquired corrosion and biofouling dataset to obtain a corrosion and biofouling assessment value; importing the stress coupling assessment deviation value, the beach and sea environment assessment value, and the corrosion and biofouling assessment value into a stress coupling assessment model; comprehensively analyzing the model to obtain a stress coupling assessment value; and judging the stress coupling state of the lined gathering and transportation pipeline based on the stress coupling assessment value.

[0020] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0021] (1) This invention provides a stress coupling analysis system and analysis method for lined gathering and transportation pipelines, which can provide more accurate stress coupling assessment, help to more accurately predict the problems that pipelines may encounter in actual operation, and thus take preventive measures in advance. The system can predict the stress response of pipelines under different environmental conditions and corrosion states, help operators understand the possible risks in the future and the long-term durability of pipelines, monitor and evaluate the stress coupling state, and can more effectively plan maintenance work, avoid over-maintenance or ignoring potential risk points, save costs and extend the service life of pipelines, identify key factors that may lead to pipeline failure, such as highly corrosive areas or sections with severe biofouling, and thus take timely measures to prevent accidents from occurring.

[0022] (2) By acquiring environmental condition datasets and comparing them to obtain stress coupling assessment deviation values, this invention predicts changes that may affect pipeline integrity and performance. This predictive capability enables maintenance teams to respond in advance, thereby avoiding or mitigating potential failures and accidents. By comparing environmental data with standard or expected model data, deviations in stress coupling assessment can be accurately identified. Based on the stress coupling assessment deviation values, high-risk areas can be addressed in a targeted manner, which not only improves maintenance efficiency but also helps to allocate resources rationally and reduce maintenance costs.

[0023] (3) This invention imports the stress coupling assessment deviation value, the beach environment assessment value, and the corrosion and biofouling assessment value into the stress coupling assessment model, and comprehensively analyzes them to obtain the stress coupling assessment value. By integrating multiple assessment values, a comprehensive view of the overall condition of the pipeline can be obtained, ensuring that the assessment is not limited to a single factor, but covers all key factors that may affect the pipeline performance and safety. It can also more accurately identify which specific environmental conditions and internal states have the most significant impact on the stress coupling of the pipeline, thereby providing more targeted solutions and supporting a more scientific and accurate decision-making process. Attached Figure Description

[0024] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the connection of the analysis system modules of the present invention.

[0026] Figure 2 This is a schematic diagram of the analytical method steps of the present invention. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] Reference Figure 1 As shown, the first aspect of the present invention provides a stress coupling analysis system for lined gathering and transportation pipelines, including an environmental assessment module, a stress coupling assessment module, and a stress coupling module.

[0030] The environmental assessment module is used to obtain stress coupling assessment deviation values ​​based on the environmental status dataset; to obtain beach and sea environment assessment values ​​based on the beach and sea environment status dataset; and to obtain corrosion and biofouling assessment values ​​based on the corrosion and biofouling dataset.

[0031] Specifically, the environmental condition dataset includes the ambient temperature, water pressure, and wave impact velocity of the pipeline. Ambient temperature has a significant impact on the physical and chemical properties of the pipeline material. Temperature is usually obtained through temperature sensors installed around or inside the pipeline. Water pressure is particularly important for subsea pipelines because it increases with water depth. High water pressure environments can compress the pipeline and affect its structural integrity. Water pressure is usually measured using pressure sensors or pressure gauges. Wave impact velocity is an indicator of the impact strength of wave dynamics on the pipeline. High-speed wave impacts can cause physical damage to the pipeline, especially in shallow water areas where the energy of the waves is greater, threatening the stability and integrity of the pipeline. Wave impact velocity can be obtained through hydrodynamic sensors or wave meters.

[0032] It needs to be explained that in deep-sea environments, as water depth increases, temperature typically decreases while water pressure increases. The decrease in temperature may affect the ductility and toughness of pipe materials, making them more brittle, while high water pressure may cause compressive stress on the pipes. Pipeline design needs to consider this combined effect of temperature and pressure to ensure that materials maintain their performance in the expected operating environment. Ambient temperature affects the physical properties of seawater; for example, temperature changes can alter the density and viscosity of seawater, thus affecting the propagation speed and impact force of waves. Wave impact speed is mainly determined by factors such as wind, currents, and topography, while water pressure is determined by water depth. In shallow water areas, wave impact may be more intense because wave energy is more concentrated near the shore or in shallow water areas. Although the water pressure is relatively low, the pipes must be able to withstand higher dynamic loads. In deep water areas, although the water pressure is high, the wave impact speed may decrease because deep-sea waves are generally smaller.

[0033] Furthermore, based on the acquired environmental condition dataset, the stress coupling assessment deviation value is obtained by comparison. The specific analysis process is as follows: Based on the acquired environmental condition dataset, the environmental condition assessment value of the lined gathering and transportation pipeline is obtained through comprehensive analysis. The environmental condition assessment value of the lined gathering and transportation pipeline is used as the basis for the analysis of the stress coupling assessment deviation value obtained by comparison. The environmental condition assessment value of the lined gathering and transportation pipeline is compared with the stress coupling assessment deviation value corresponding to the environmental condition assessment value of each lined gathering and transportation pipeline stored in the database to obtain the stress coupling assessment deviation value corresponding to the environmental condition assessment value of the lined gathering and transportation pipeline.

[0034] In one specific embodiment, comparing environmental conditions with historically known data allows for a more accurate assessment of current stress conditions and potential risks. It enables the rapid identification of parameters deviating from normal ranges, facilitating timely adjustments to operational strategies, such as reducing operating pressure or adjusting temperature settings, to prevent potential structural damage or failures. Based on stress coupling assessment deviations, maintenance teams can more effectively plan maintenance work. Systematically monitoring and evaluating environmental conditions and their impact on pipeline stress helps improve the reliability and safety of the entire pipeline system. It also provides a solid data foundation to support fact-based decision-making processes, enhancing the transparency and reliability of decisions and providing a scientific basis for operational and maintenance decisions.

[0035] It should be explained that the above-mentioned method of obtaining environmental condition datasets, comparing them to obtain stress coupling assessment deviation values, and predicting changes that may affect pipeline integrity and performance allows maintenance teams to respond in advance, thereby avoiding or mitigating potential failures and accidents. By comparing environmental data with standard or expected model data, deviations in stress coupling assessments can be accurately identified. Based on the stress coupling assessment deviation values, high-risk areas can be addressed in a targeted manner, which not only improves maintenance efficiency but also helps to allocate resources rationally and reduce maintenance costs.

[0036] It should be explained that the environmental condition assessment values ​​of the above-mentioned lined gathering and transportation pipelines are analyzed in the following way:

[0037]

[0038] In the formula, α is the environmental condition assessment value of the lined gathering and transportation pipeline, wd is the ambient temperature of the lined gathering and transportation pipeline, sy is the ambient water pressure of the lined gathering and transportation pipeline, qv is the wave impact velocity of the lined gathering and transportation pipeline, μ1 is the set compensation factor for the ambient temperature of the lined gathering and transportation pipeline, μ2 is the set compensation factor for the ambient water pressure of the lined gathering and transportation pipeline, and μ3 is the set compensation factor for the wave impact velocity of the lined gathering and transportation pipeline.

[0039] It should be explained that the aforementioned environmental condition assessment values ​​for the lined gathering and transportation pipeline are calculated based on the ambient temperature, water pressure, and wave impact velocity of the pipeline. These parameters are normalized. Assessing environmental factors can identify potential risks and hazards, helping to prevent pipeline damage or leakage under extreme conditions, thereby reducing the probability of accidents. Environmental condition-based assessments can guide pipeline design and material selection, ensuring sufficient durability and pressure resistance under specific environmental conditions, extending service life. The assessment values ​​accurately reflect the pipeline's operational performance under specific environmental conditions, helping engineers predict potential problems and take corresponding preventative measures. Real-time environmental condition assessments can promptly identify and address these issues. To address potential problems, reduce maintenance frequency, lower long-term maintenance costs, and provide scientific data and basis, the compensation factors for the ambient temperature, water pressure, and wave impact velocity of the lined gathering and transportation pipeline are obtained from the database. Based on historical data, a mapping set is established between the compensation factors for the ambient temperature, water pressure, and wave impact velocity of the lined gathering and transportation pipeline and the ambient temperature, water pressure, and wave impact velocity of the lined gathering and transportation pipeline. This yields the compensation factors for the current ambient temperature, water pressure, and wave impact velocity of the lined gathering and transportation pipeline.

[0040] Specifically, based on the acquired dataset of the marine environmental status of the pipeline lining, a comprehensive analysis is conducted to obtain the marine environmental assessment value. The specific analysis process is as follows: The dataset of the marine environmental status of the pipeline lining includes data on wave impact, current impact, sea ice impact, and land settlement shear force. Wave impact is generated by the kinetic energy of the waves. When waves strike the pipeline, they apply a dynamic load, which may lead to pipeline vibration, displacement, or even structural damage. This data is obtained through wave meters and underwater acoustic sensors. Current impact comes from continuous seawater flow, applying a continuous hydrodynamic load to the pipeline, which can cause long-term fatigue, especially in areas with strong currents. Ocean current measurement instruments, such as acoustic Doppler current meters or current meters, acquire data. In cold marine environments, floating or moving sea ice may impact pipelines, exerting physical impact forces that may cause mechanical damage or structural displacement. Radar, satellite imagery, and on-site observations are used to monitor the distribution, thickness, and movement of sea ice to predict its potential impact on pipelines. Ground subsidence shear forces, caused by uneven ground subsidence or geological activity, exert shear stress on pipelines, potentially leading to damage at pipeline connections or deformation of the pipeline itself. Ground subsidence is typically monitored using ground-based or satellite-based measurement technologies such as inclinometers and surface radar. Based on the acquired dataset of the beach and sea environment status of the inner-lined gathering and transportation pipeline, a comprehensive analysis is conducted to obtain a beach and sea environment assessment value. This beach and sea environment assessment value serves as the analytical basis for obtaining the stress coupling assessment value through comprehensive analysis.

[0041] It should be explained that the aforementioned wave impact force and ocean current impact force are both components of hydrodynamic loads. Wave impact force mainly comes from the fluctuation of ocean waves, causing periodic impacts, while ocean current impact force is generated by the continuous flow of seawater. The combined force of the two affects the stability and displacement of the pipeline. Sea ice impact force is a factor specific to cold environments, and it is particularly significant during freezing seasons or in ice-covered areas. The movement and impact of sea ice can impose additional mechanical loads on the pipeline. In ice-covered areas, the presence of sea ice can alter the propagation characteristics of waves. Ice layers may reduce the propagation range of waves or slow their speed, but at the same time, the movement of ice layers may increase... The physical impacts on pipelines, including sea ice impact force and ground settlement shear force, are caused by different factors. Sea ice impact force is related to the physical effects of sea ice, while ground settlement shear force is related to ground stability and settlement. If sea ice causes damage or deformation to the pipeline structure, ground settlement may exacerbate this effect. The relationship between ocean current impact force and ground settlement shear force is mainly reflected in the long-term impact on the pipeline. The continuous impact of ocean currents may cause displacement or damage to the pipeline's foundation or supporting structure, while ground settlement will cause shear stress. If ocean currents cause instability in the pipeline foundation, it may exacerbate the impact of ground settlement on the pipeline.

[0042] It should be explained that the comprehensive analysis of all key environmental factors described above provides a complete understanding of the pipeline's stress state. This comprehensiveness ensures that the stress coupling assessment considers all environmental factors that may affect the pipeline, improving the accuracy of the assessment. By integrating data from these environmental factors, the environmental state assessment values ​​can more accurately reflect the complexities of the actual operating environment. This makes the stress coupling assessment more realistic, improving the accuracy of predicting the pipeline's operating status and potential problems. Using environmental state assessment values ​​as the basis for analysis can more effectively identify and assess potential risks in the pipeline system, helping to take preventative measures and develop corresponding emergency response plans in advance to reduce the probability and impact of failures. Analyzing environmental state assessment values ​​can help determine the optimal maintenance and operation strategies for the pipeline under specific environmental conditions, optimize maintenance plans based on the combined impact of different environmental factors on the pipeline, ensure stable operation of the pipeline under various environmental conditions, and better understand how these factors affect the pipeline's stress coupling, thereby improving the overall reliability and safety of the pipeline system, helping to reduce the occurrence of accidents, and improving the long-term stability of the pipeline system.

[0043] Further, the environmental assessment values ​​for the beach and sea are analyzed in the following specific steps:

[0044]

[0045] In the formula, β is the marine environment assessment value, hl is the wave impact force of the marine environment of the pipeline lining, hu is the current impact force of the marine environment of the pipeline lining, hb is the sea ice impact force of the marine environment of the pipeline lining, cj is the ground settlement shear force of the marine environment of the pipeline lining, σ1 is the set compensation factor for the wave impact force of the marine environment of the pipeline lining, σ2 is the set compensation factor for the current impact force of the marine environment of the pipeline lining, σ3 is the set compensation factor for the sea ice impact force of the marine environment of the pipeline lining, and σ4 is the set compensation factor for the ground settlement shear force of the marine environment of the pipeline lining.

[0046] It should be explained that the above-mentioned marine environmental assessment values ​​are obtained through calculations of the wave impact force, current impact force, sea ice impact force, and ground settlement shear force in the marine environment of the pipeline. These values ​​are normalized to assess the impact of various impact forces on the pipeline. This assessment effectively identifies and predicts risks that may lead to pipeline damage or rupture, enabling the development of corresponding prevention and emergency measures, improving overall safety. The assessment of potential environmental loads can optimize pipeline operation strategies and maintenance plans, improve overall operational efficiency, identify potential problems in advance, reduce sudden failures and accidents, improve maintenance planning, and reduce long-term maintenance and repair costs. The set values ​​for the wave impact force, current impact force, and ground settlement shear force in the marine environment of the pipeline are used to assess the impact of these forces. The compensation factors for sea ice impact force and land settlement shear force in the beach environment of the pipeline were obtained from the database. Based on historical data, historical measurements of wave impact force, current impact force, sea ice impact force, and land settlement shear force in the beach environment of the pipeline were established. The mapping set of compensation factors for the force and the land settlement shear force of the lining pipeline in the beach and sea environment is obtained to obtain the compensation factors for the current wave impact force, current impact force, sea ice impact force, and land settlement shear force of the lining pipeline in the beach and sea environment.

[0047] Example 2

[0048] Specifically, based on the acquired corrosion and biofouling datasets, a comprehensive analysis is conducted to obtain corrosion and biofouling assessment values. The specific analysis process is as follows: The corrosion and biofouling datasets are acquired, specifically including the corrosion area of ​​the external structure of the lined gathering and transportation pipeline, the corrosion area of ​​the internal lining structure of the lined gathering and transportation pipeline, and the biofouling area of ​​the external structure of the lined gathering and transportation pipeline. The external structure corrosion area refers to the total area of ​​corrosion caused by the marine environment (such as salinity, oxidation, etc.) on the outside of the pipeline. Corrosion may reduce the strength of the pipeline material, increasing the risk of leakage and structural failure. This data is obtained using an electrochemical corrosion monitoring instrument. The internal lining structure corrosion area refers to the area of ​​corrosion of the pipeline's internal lining (such as...). Corrosion of the lining (corrosion-resistant coating or other protective layer) is the total area of ​​corrosion caused by chemical reactions or wear. Internal lining corrosion may affect the quality of the transported medium and increase the risk of pipeline leakage. This data is obtained using an electrochemical corrosion monitoring instrument. The external structure bioattachment area refers to the area of ​​organisms (such as algae, shellfish, etc.) growing on the outside of the pipeline. Bioattachment not only affects the external structure of the pipeline but may also lead to increased pipeline resistance and reduced heat exchange efficiency. This data is obtained using a laser scanner. Based on the obtained corrosion and bioattachment datasets, a comprehensive analysis is performed to obtain corrosion and bioattachment assessment values. These assessment values ​​serve as the basis for the comprehensive analysis to obtain stress coupling assessment values.

[0049] It should be explained that the aforementioned biological attachment (such as algae, shellfish, etc.) can exacerbate external corrosion of pipelines. The attached organisms not only directly cause mechanical wear on the pipeline, but may also affect the chemical environment of the pipeline surface by producing organic matter or secretions, thereby accelerating the corrosion process. Although external structural corrosion and internal lining structural corrosion affect different parts of the pipeline, they are indirectly related to each other. External corrosion may affect the structural integrity of the pipeline, thereby affecting the protective effect of the lining. In cases of severe external corrosion, it may lead to the penetration of the pipeline material, causing the lining to lose its effective protection and ultimately leading to lining corrosion. External biological attachment and corrosion may cause changes in the external support structure of the pipeline, which may indirectly affect the stress state and corrosion status of the lining.

[0050] It should be explained that corrosion and biofouling are two key factors affecting pipeline health. These factors provide a more comprehensive view of pipeline health, ensuring that assessments are not limited to a single factor but comprehensively consider all potential impacts. Incorporating corrosion and biofouling assessments into stress coupling evaluations helps accurately reflect the overall stress state of the pipeline in the actual operating environment, thereby improving the accuracy of stress coupling evaluations. Corrosion and biofouling not only independently affect the structural strength and stability of pipelines but may also interact with environmental factors. A comprehensive assessment of these factors can better reflect the actual stress state and risks of the pipeline. Using this data as a basis for analysis allows for the identification and quantification of stress coupling in pipelines under different conditions, thus improving the reliability of system analysis. Understanding the corrosion and biofouling status of lined pipelines helps in developing more targeted maintenance and repair strategies. Comprehensive assessment values ​​can identify potential structural risks in advance, enabling preventative measures to be taken, reducing unexpected failures, and improving the reliability of the pipeline system.

[0051] Further, the corrosion and biofouling assessment values ​​were analyzed in the following manner:

[0052]

[0053] In the formula, γ is the corrosion and bioattachment assessment value, wf is the corrosion area of ​​the external structure of the lined gathering and transportation pipeline, nf is the corrosion area of ​​the inner lining structure of the lined gathering and transportation pipeline, ws is the bioattachment area of ​​the external structure of the lined gathering and transportation pipeline, τ1 is the set compensation factor for the corrosion area of ​​the external structure of the lined gathering and transportation pipeline, τ2 is the set compensation factor for the corrosion area of ​​the inner lining structure of the lined gathering and transportation pipeline, τ3 is the set compensation factor for the bioattachment area of ​​the external structure of the lined gathering and transportation pipeline, and e is a natural constant.

[0054] It should be explained that the above corrosion and biofouling assessment values ​​are calculated based on the corrosion area of ​​the external structure of the lined pipeline, the corrosion area of ​​the internal lining structure, and the biofouling area of ​​the external structure. These areas are normalized. Assessing the corrosion areas of the external and internal structures allows us to understand the pipeline's corrosion under different environmental conditions, helping to determine its durability and remaining service life. Assessing the biofouling area of ​​the external structure reveals the impact of biofouling on the pipeline. Biofouling not only generates mechanical stress on the pipeline but may also promote microbial growth, accelerating corrosion. Understanding the corrosion and biofouling status helps assess the need for pipeline maintenance, providing a basis for maintenance and replacement budgets and avoiding economic losses from unexpected downtime. Potential corrosion and biofouling conditions not only affect the pipeline... The pipeline itself may also impact the surrounding environment. Conducting appropriate assessments helps in the formulation of environmental management and protection measures. The compensation factors for the corrosion area of ​​the external structure of the lined gathering and transportation pipeline, the corrosion area of ​​the inner lining structure of the lined gathering and transportation pipeline, and the biofouling area of ​​the external structure of the lined gathering and transportation pipeline are obtained from a database. Based on historical data, a mapping set is established between the historically measured corrosion areas of the external structure of the lined gathering and transportation pipeline, the corrosion area of ​​the inner lining structure of the lined gathering and transportation pipeline, the biofouling area of ​​the external structure of the lined gathering and transportation pipeline, and the compensation factors for these areas. This yields the compensation factors for the current corrosion areas of the external structure of the lined gathering and transportation pipeline, the corrosion area of ​​the inner lining structure of the lined gathering and transportation pipeline, and the biofouling area of ​​the external structure of the lined gathering and transportation pipeline.

[0055] The stress coupling assessment module is used to import the stress coupling assessment deviation value, the beach and marine environment assessment value, and the corrosion and biofouling assessment value into the stress coupling assessment model to obtain the stress coupling assessment value.

[0056] Specifically, the stress coupling assessment value is obtained through comprehensive analysis. The specific analysis process is as follows: the stress coupling assessment deviation value, the beach environment assessment value, and the corrosion and biofouling assessment value are imported into the stress coupling assessment model, and the stress coupling assessment value is obtained through comprehensive analysis. The stress coupling assessment value is used as the basis for judging the stress coupling state of the inner-lined gathering and transportation pipeline.

[0057] Example 3

[0058] In one specific embodiment, combining stress coupling assessment deviation values, environmental condition assessment values, and corrosion and biofouling condition assessment values ​​can comprehensively consider all key influencing factors, and more accurately reflect the actual stress situation of the pipeline, rather than the influence of a single factor. Considering a single factor alone may lead to deviations in the assessment results. By integrating multiple factors, errors caused by a single factor can be reduced, thereby improving the accuracy of the overall assessment. Comprehensive assessment of stress coupling status can better formulate targeted maintenance and repair plans, identify which factors have the greatest impact on the pipeline, and take corresponding maintenance measures to reduce potential risks.

[0059] It should be explained that the specific analysis process of the above stress coupling evaluation model is as follows:

[0060]

[0061] In the formula, δ is the stress coupling assessment value, β is the beach environment assessment value, γ is the corrosion and biofouling assessment value, and ω is the stress coupling assessment deviation value.

[0062] It should be explained that the above method involves importing stress coupling assessment deviation values, marine environment assessment values, and corrosion and biofouling assessment values ​​into the stress coupling assessment model, and then comprehensively analyzing them to obtain the stress coupling assessment value. By integrating multiple assessment values, a comprehensive view of the overall pipeline condition can be obtained. This ensures that the assessment is not limited to a single factor but covers all key factors that may affect pipeline performance and safety. It can also more accurately identify which specific environmental conditions and internal states have the most significant impact on pipeline stress coupling, thereby providing more targeted solutions and supporting a more scientific and precise decision-making process.

[0063] The stress coupling module is used to determine the stress coupling state of the lined gathering and transportation pipeline based on the stress coupling evaluation value.

[0064] Specifically, based on the stress coupling assessment value, the stress coupling state of the lined gathering and transportation pipeline is judged. The specific analysis process is as follows: the stress coupling assessment value is compared with the stress coupling reference assessment value stored in the database; if the stress coupling assessment value is higher than the stress coupling reference assessment value, the stress coupling state of the lined gathering and transportation pipeline corresponding to the stress coupling assessment value is excellent; if the stress coupling assessment value is equal to the stress coupling reference assessment value, the stress coupling state of the lined gathering and transportation pipeline corresponding to the stress coupling assessment value is good; if the stress coupling assessment value is lower than the stress coupling reference assessment value, the stress coupling state of the lined gathering and transportation pipeline corresponding to the stress coupling assessment value is poor.

[0065] In one specific embodiment, by comparing the stress coupling assessment value with a reference assessment value in the database, a clear standard can be provided to determine the condition of the pipeline. Standardized comparison helps to objectively assess the pipeline condition. Using the reference assessment value stored in the database for comparison ensures that the assessment process is based on actual data, reducing deviations caused by human factors. Comparing the assessment value with the reference value can identify potential risks early. For pipelines in poor condition, timely measures can be taken to prevent the problem from worsening. Clear assessment results provide strong data support for decision-making. Timely detection and repair of pipelines in poor condition can reduce downtime and repair costs caused by pipeline failures, thereby improving economic efficiency.

[0066] It should be explained that the above-mentioned stress coupling analysis system and method for lined gathering and transportation pipelines can provide more accurate stress coupling assessment, which helps to more accurately predict the problems that pipelines may encounter in actual operation, thereby enabling preventive measures to be taken in advance. The system can predict the stress response of pipelines under different environmental conditions and corrosion states, helping operators understand potential future risks and the long-term durability of pipelines. Monitoring and evaluating the stress coupling state can more effectively plan maintenance work, avoid over-maintenance or ignoring potential risk points, save costs and extend the service life of pipelines, and identify key factors that may lead to pipeline failure, such as highly corroded areas or sections with severe biofouling, thereby enabling timely measures to prevent accidents from occurring.

[0067] Example 4

[0068] Reference Figure 2 As shown, the second aspect of the present invention provides a stress coupling analysis method for lined gathering and transportation pipelines, comprising the following steps: obtaining stress coupling evaluation deviation values ​​based on an environmental state dataset; obtaining beach and sea environment evaluation values ​​based on a beach and sea environment state dataset; obtaining corrosion and biofouling evaluation values ​​based on a corrosion and biofouling dataset; importing the stress coupling evaluation deviation values, beach and sea environment evaluation values, and corrosion and biofouling evaluation values ​​into a stress coupling evaluation model to obtain stress coupling evaluation values; and judging the stress coupling state of the lined gathering and transportation pipeline based on the stress coupling evaluation values.

[0069] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A stress coupling analysis system for lined gathering and transportation pipelines, characterized in that, It includes an environmental assessment module, a stress coupling assessment module, and a stress coupling module, among which: The environmental assessment module is used to obtain stress coupling assessment deviation values ​​based on environmental state datasets; obtain beach and sea environment assessment values ​​based on beach and sea environment state datasets; and obtain corrosion and biofouling assessment values ​​based on corrosion and biofouling datasets. The stress coupling assessment module is used to import the stress coupling assessment deviation value, the beach and marine environment assessment value, and the corrosion and biofouling assessment value into the stress coupling assessment model to obtain the stress coupling assessment value. The stress coupling module is used to determine the stress coupling state of the inner lining gathering and transportation pipeline based on the stress coupling evaluation value.

2. The stress coupling analysis system for lined gathering and transportation pipelines according to claim 1, characterized in that: The environmental status dataset specifically includes the ambient temperature, water pressure, and wave impact velocity of the lining pipeline.

3. The stress coupling analysis system for lined gathering and transportation pipelines according to claim 2, characterized in that: Based on the acquired environmental state dataset, the stress coupling assessment deviation value is obtained by comparison. The specific analysis process is as follows: Based on the acquired environmental status dataset, a comprehensive analysis was conducted to obtain the environmental status assessment value of the lined gathering and transportation pipeline. The environmental status assessment value of the lined gathering and transportation pipeline was used as the basis for the analysis of the stress coupling assessment deviation value. The stress coupling assessment deviation value corresponding to the environmental state assessment value of the lined gathering and transportation pipeline is obtained by comparing the environmental state assessment value of each lined gathering and transportation pipeline stored in the database.

4. The stress coupling analysis system for lined gathering and transportation pipelines according to claim 1, characterized in that: Based on the acquired dataset of the coastal environmental status of the inner lining pipeline, a comprehensive analysis was conducted to obtain the coastal environmental assessment value. The specific analysis process is as follows: Obtain the marine environmental status dataset of the pipeline lining. The marine environmental status dataset of the pipeline lining includes the wave impact force, current impact force, sea ice impact force, and land settlement shear force of the pipeline lining. Based on the acquired dataset of the coastal environmental status of the inner-lined gathering and transportation pipeline, a comprehensive analysis was conducted to obtain the coastal environmental assessment value, which served as the basis for the stress coupling assessment value obtained from the comprehensive analysis.

5. The stress coupling analysis system for lined gathering and transportation pipelines according to claim 4, characterized in that: The specific analysis process for the aforementioned marine environmental assessment values ​​is as follows: In the formula, β is the marine environment assessment value, hl is the wave impact force of the marine environment of the pipeline lining, hu is the current impact force of the marine environment of the pipeline lining, hb is the sea ice impact force of the marine environment of the pipeline lining, cj is the ground settlement shear force of the marine environment of the pipeline lining, σ1 is the set compensation factor for the wave impact force of the marine environment of the pipeline lining, σ2 is the set compensation factor for the current impact force of the marine environment of the pipeline lining, σ3 is the set compensation factor for the sea ice impact force of the marine environment of the pipeline lining, and σ4 is the set compensation factor for the ground settlement shear force of the marine environment of the pipeline lining.

6. The stress coupling analysis system for lined gathering and transportation pipelines according to claim 1, characterized in that: Based on the acquired corrosion and biofouling datasets, a comprehensive analysis was conducted to obtain corrosion and biofouling assessment values. The specific analysis process is as follows: Obtain corrosion and bioattachment datasets, which specifically include the corrosion area of ​​the external structure of the lined gathering and transportation pipeline, the corrosion area of ​​the internal lining structure of the lined gathering and transportation pipeline, and the bioattachment area of ​​the external structure of the lined gathering and transportation pipeline. Based on the acquired corrosion and biofouling datasets, a comprehensive analysis was conducted to obtain corrosion and biofouling assessment values, which served as the basis for the stress coupling assessment values ​​obtained from the comprehensive analysis.

7. The stress coupling analysis system for lined gathering and transportation pipelines according to claim 6, characterized in that: The specific analysis process for the corrosion and biofouling assessment values ​​is as follows: In the formula, γ is the corrosion and bioattachment assessment value, wf is the corrosion area of ​​the external structure of the lined gathering and transportation pipeline, nf is the corrosion area of ​​the inner lining structure of the lined gathering and transportation pipeline, ws is the bioattachment area of ​​the external structure of the lined gathering and transportation pipeline, τ1 is the set compensation factor for the corrosion area of ​​the external structure of the lined gathering and transportation pipeline, τ2 is the set compensation factor for the corrosion area of ​​the inner lining structure of the lined gathering and transportation pipeline, τ3 is the set compensation factor for the bioattachment area of ​​the external structure of the lined gathering and transportation pipeline, and e is a natural constant.

8. The stress coupling analysis system for lined gathering and transportation pipelines according to claim 1, characterized in that: The comprehensive analysis yielded a stress coupling evaluation value, and the specific analysis process is as follows: The stress coupling assessment deviation value, the beach and sea environment assessment value, and the corrosion and biofouling assessment value are imported into the stress coupling assessment model. The stress coupling assessment value is obtained through comprehensive analysis and serves as the basis for judging the stress coupling state of the inner-lined gathering and transportation pipeline.

9. The stress coupling analysis system for lined gathering and transportation pipelines according to claim 1, characterized in that: The determination of the stress coupling state of the inner-lined gathering and transportation pipeline based on the stress coupling evaluation value is specifically analyzed as follows: The stress coupling assessment values ​​are compared with the stress coupling reference assessment values ​​stored in the database; If the stress coupling assessment value is higher than the stress coupling reference assessment value, then the stress coupling state of the inner lining gathering and transportation pipeline corresponding to the stress coupling assessment value is excellent. If the stress coupling assessment value is equal to the stress coupling reference assessment value, then the stress coupling state of the inner lining gathering and transportation pipeline corresponding to this stress coupling assessment value is good. If the stress coupling assessment value is lower than the stress coupling reference assessment value, then the stress coupling state of the inner lining gathering and transportation pipeline corresponding to that stress coupling assessment value is poor.

10. A stress coupling analysis method for lined gathering and transportation pipelines, characterized in that, The stress coupling analysis system for a lined gathering and transportation pipeline as described in any one of claims 1-9 includes the following steps: Stress coupling assessment deviation values ​​were obtained based on environmental state datasets; beach and sea environment assessment values ​​were obtained based on beach and sea environment state datasets; corrosion and biofouling assessment values ​​were obtained based on corrosion and biofouling datasets. The stress coupling assessment deviation value, the beach and marine environment assessment value, and the corrosion and biofouling assessment value are imported into the stress coupling assessment model to obtain the stress coupling assessment value. The stress coupling state of the inner-lined gathering and transportation pipeline is determined based on the stress coupling evaluation value.

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