Method, system and equipment for evaluating applicability of hydrogen transferring material of natural gas pipeline

Abstract

The invention discloses an applicability evaluation method, system and device for a natural gas pipeline hydrogen transfer material, and relates to the technical field of applicability evaluation of pipeline hydrogen transfer materials, and the method comprises the steps: determining the initial state information, operation status and high consequence area distribution condition of a pipeline to be transferred; pipeline integrity detection and evaluation are carried out, and the pipeline integrity condition and high-risk point distribution are determined; determining a sampling position and a sampling number of a pipeline test evaluation site; determining a current performance condition, a hydrogen stress intensity factor and a fatigue crack growth rate of the pipeline; and predicting the degradation trend and residual life of the pipeline based on a pipeline integrity evaluation result, comprehensively evaluating by combining a material conventional performance test result and a hydrogen compatibility test result, determining the applicability of the pipeline to be transferred, and proposing a suggestion for transferring hydrogen from the pipeline. By using the method, the material applicability of the in-service natural gas pipeline for transferring the high-pressure hydrogen can be effectively evaluated, and suggestions are provided for the implementation of a hydrogen transferring project of the in-service natural gas pipeline.

Description

Background Art

[0002] Hydrogen energy is an important part of the future national energy system and an important carrier for energy-consuming terminals to achieve green and low-carbon transformation. The current development of the hydrogen energy industry is still constrained by factors such as high costs and weak infrastructure, among which the key bottleneck is storage and transportation. Storage and transportation costs account for 40-50% of the terminal consumption costs of hydrogen, and the existing storage and transportation methods are small-scale, inefficient, costly, and poorly economical. Pipeline transportation has the advantages of large transmission volume, low energy consumption, and low cost. It is an important way to achieve high-density and long-distance transportation of hydrogen. "Pipeline transportation + storage" will be a prerequisite for significantly reducing the cost of hydrogen energy and supporting large-scale and multi-scenario applications of hydrogen energy.

[0003] Compared with building new pipelines, using existing pipelines for transportation has significant economic advantages. About 70% of hydrogen pipelines in the world are transported through existing pipelines. After decades of development, the total mileage of my country's long-distance oil and gas pipelines has exceeded 180,000 kilometers, of which more than 60% have been in service for more than 20 years. Evaluating, renovating and reusing old pipelines is an effective way to reduce the cost of hydrogen pipeline transportation.

[0004] At present, my country is facing practical problems in the transfer of hydrogen through natural gas pipelines, such as an imperfect standard system, an immature technical system, and no engineering precedents. Material adaptability is the primary technical problem faced by the transfer of hydrogen through natural gas pipelines. At present, my country has not yet proposed an effective method for the material adaptability of hydrogen transfer through natural gas pipelines, which is not conducive to the development of hydrogen pipeline business. Summary of the invention

[0005] The technical problem to be solved by the present invention is to address the deficiencies of the prior art and specifically provide a method, system and equipment for evaluating the suitability of materials for hydrogen transfer in natural gas pipelines, as follows:

[0006] 1) In the first aspect, the present invention provides a method for evaluating the suitability of hydrogen transfer materials for natural gas pipelines with high stress design, and the specific technical scheme is as follows:

[0007] Collect historical information on pipeline construction and operation and maintenance to obtain initial status information of the proposed transfer pipeline;

[0008] Conduct on-site surveys of pipeline conditions to obtain the operating status of the proposed transfer pipeline and the distribution of high-consequence areas;

[0009] Detect and evaluate pipeline integrity to determine pipeline integrity status and distribution of high-risk points;

[0010] Based on the initial state, current operation status, distribution of high consequence areas and high risk points of the proposed transfer pipeline, the sampling location and number of samples for pipeline test and evaluation are determined; the sampling can reflect the impact of the worst working conditions of pipeline stress, the worst material properties and representatives of various types of material products.

[0011] Conduct routine material performance tests on field sampling samples to determine the current performance status of the field sampling samples and judge the applicability of routine performance.

[0012] Conduct hydrogen stress intensity factor test on on-site sampling samples to determine whether they meet the preset conditions.

[0013] Conduct crack growth rate tests on on-site samples to predict remaining service life and determine whether preset conditions are met.

[0014] Based on the pipeline integrity evaluation results and conventional material performance test results, the pipeline degradation trend and remaining life are predicted; combined with the conventional material performance test results and hydrogen stress intensity factor test results, a comprehensive evaluation is conducted to determine the suitability of the proposed transfer pipeline; combined with the crack growth rate test results, the remaining life of the pipeline under hydrogen transmission conditions is predicted, and recommendations for pipeline hydrogen transfer are put forward.

[0015] The beneficial effects of the method for evaluating the suitability of hydrogen transfer materials for natural gas pipelines with high stress design provided by the present invention are as follows:

[0016] By conducting routine material performance tests and material hydrogen compatibility tests on the natural gas pipeline to be evaluated, the performance parameters (hydrogen stress intensity factor threshold value, crack growth coefficient) of the natural gas pipeline to be evaluated can be determined quickly and accurately. Based on the performance parameters and the data applied during the experiment, a basic evaluation of the natural gas pipeline to be evaluated can objectively reflect the actual situation of the natural gas pipeline to be evaluated. In addition, the evaluation results of the actual situation can be used to evaluate the suitability of the hydrogen transfer material with greater accuracy.

[0017] Based on the above solution, the present invention can also be improved as follows.

[0018] Furthermore, the historical information on pipeline engineering construction and operation and maintenance includes: pipeline design, completion documents, pipeline material data, chemical composition analysis results of pipes, yield strength, ultimate tensile strength-impact strength-welding process-welding material data, previous conveying medium, corrosiveness corresponding to the previous conveying medium, maximum allowable operating pressure of the pipeline, historical operating pressure, accident-maintenance records, pressure test records when the pipeline is put into production, pipeline internal and external inspection-integrity evaluation report, pipeline internal and external corrosion protection information-cathodic protection test records and at least one of pipeline image maps.

[0019] Furthermore, the on-site survey includes: environmental information of the geology, population, and buildings around the pipeline, pipeline location-burial depth information, roads through which the pipeline passes, railways through which the pipeline passes, rivers through which the pipeline passes, corresponding crossing locations, locations of inhabited buildings around the pipeline, the number of inhabited buildings around the pipeline, and at least one of changes in high consequence areas.

[0020] Furthermore, the process of determining the suitability of the proposed transfer pipeline is as follows: the process of determining the suitability of the proposed transfer pipeline is as follows: judging whether the hydrogen stress intensity factor meets the preset conditions, and judging whether the remaining life in the hydrogen environment predicted by the hydrogen fatigue crack growth rate can meet the requirements, and determining the suitability of the proposed transfer pipeline according to the judgment results.

[0021] 2) In the second aspect, the present invention also provides a high stress design natural gas pipeline hydrogen transfer material applicability evaluation system, the specific technical scheme is as follows:

[0022] The first acquisition module is used to collect historical information on pipeline construction and operation and maintenance, and obtain initial state information of the proposed transfer pipeline;

[0023] The second acquisition module is used to: conduct on-site survey of pipeline conditions to obtain the operating status of the proposed transfer pipeline and the distribution of high-consequence areas;

[0024] The first determination module is used to: detect and evaluate pipeline integrity, determine pipeline integrity status and high-risk point distribution;

[0025] The second determination module is used to determine the sampling location and sampling quantity of the pipeline test evaluation site according to the initial state, operation status, distribution of high consequence areas and distribution of high risk points of the proposed transfer pipeline;

[0026] The third determination module is used to: perform material performance test and hydrogen compatibility test on the on-site sampling samples to determine the current performance status, hydrogen stress intensity factor and hydrogen fatigue crack growth rate of the on-site sampling samples;

[0027] The evaluation module is used to: predict pipeline degradation trends and remaining life based on pipeline integrity evaluation results and conventional material performance test results; determine the applicability of the proposed transfer pipeline through comprehensive evaluation based on conventional material performance test results and hydrogen stress intensity factor test results; predict the remaining life of the pipeline under hydrogen transmission conditions based on crack growth rate test results, and put forward recommendations for pipeline hydrogen transfer.

[0028] Based on the above solution, the present invention can also be improved as follows.

[0029] Furthermore, the historical information on pipeline engineering construction and operation and maintenance includes: pipeline design, completion documents, pipeline material data, chemical composition analysis results of pipes, yield strength, ultimate tensile strength-impact strength-welding process-welding material data, previous conveying medium, corrosiveness corresponding to the previous conveying medium, maximum allowable operating pressure of the pipeline, historical operating pressure, accident-maintenance records, pressure test records when the pipeline is put into production, pipeline internal and external inspection-integrity evaluation report, pipeline internal and external corrosion protection information-cathodic protection test records and at least one of pipeline image maps.

[0030] Furthermore, the on-site survey includes: environmental information of the geology, population, and buildings around the pipeline, pipeline location-burial depth information, roads through which the pipeline passes, railways through which the pipeline passes, rivers through which the pipeline passes, corresponding crossing locations, locations of inhabited buildings around the pipeline, the number of inhabited buildings around the pipeline, and at least one of changes in high consequence areas.

[0031] Furthermore, the process of determining the suitability of the proposed transfer pipeline is as follows: the process of determining the suitability of the proposed transfer pipeline is as follows: judging whether the hydrogen stress intensity factor meets the preset conditions, and judging whether the remaining life in the hydrogen environment predicted by the hydrogen fatigue crack growth rate can meet the requirements, and determining the suitability of the proposed transfer pipeline according to the judgment results.

[0032] 3) In a third aspect, the present invention further provides an electronic device, comprising a processor, wherein the processor is coupled to a memory, wherein at least one computer program is stored in the memory, and the at least one computer program is loaded and executed by the processor so that the electronic device implements any of the above methods.

[0033] 4) In a fourth aspect, the present invention further provides a computer-readable storage medium, wherein at least one computer program is stored in the computer-readable storage medium, and the at least one computer program is loaded and executed by a processor so that a computer implements any of the above methods.

[0034] It should be noted that the beneficial effects achieved by the technical solutions of the second to fourth aspects of the present invention and the corresponding possible implementation methods can be found in the above-mentioned technical effects of the first aspect and its corresponding possible implementation methods, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0036] Figure 1 This is one of the flow diagrams of a method for evaluating the suitability of a natural gas pipeline hydrogen transfer material with a high stress design according to an embodiment of the present invention;

[0037] Figure 2 This is a second flow chart of a method for evaluating the suitability of a high-stress designed natural gas pipeline hydrogen transfer material according to an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of an electronic device for a method for evaluating the suitability of materials for transferring hydrogen through a natural gas pipeline with a high stress design according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] like Figure 1 As shown, a method for evaluating the suitability of a high-stress designed natural gas pipeline hydrogen transfer material according to an embodiment of the present invention comprises the following steps:

[0041] S1: Collect historical information on pipeline construction and operation and maintenance to obtain initial status information of the proposed transfer pipeline.

[0042] The information collected shall at least include pipeline design and completion documents; pipeline material data, including chemical composition analysis, yield strength, ultimate tensile strength and impact strength of the pipe, as well as welding process and welding material data; previous conveying media and its corrosiveness; the maximum allowable operating pressure and historical operating pressure of the pipeline; accident and maintenance records; pressure test records when the pipeline is put into operation, pipeline internal and external inspection and integrity evaluation reports, pipeline internal and external corrosion protection information and cathodic protection test records, pipeline images and other related information.

[0043] The proposed transfer pipeline refers to: a sealed natural gas pipeline or an in-service natural gas pipeline with a pipeline steel grade below X60.

[0044] Initial status information includes but is not limited to: basic technical information such as raw materials, design, and construction during the pipeline construction period.

[0045] The specific process of obtaining the initial status information of the proposed transfer pipeline is: data sorting and analysis.

[0046] S2, conduct on-site survey of pipeline conditions to obtain the current operating status of the proposed transfer pipeline and the distribution of high-consequence areas. Among them:

[0047] The contents of the on-site survey shall at least include the geological, population, and architectural environmental information around the pipeline; the location and burial depth of the pipeline, and compare it with the drawings; the locations where the pipeline crosses roads, railways, rivers, etc.; the location and number of inhabited buildings around the pipeline, and changes in high-consequence areas.

[0048] The high consequence distribution refers to the following: high consequence areas refer to areas where pipeline leakage will seriously endanger public safety and / or cause significant environmental pollution.

[0049] The specific process of obtaining the operating status of the proposed transfer pipeline and the distribution of high-consequence areas is as follows: in accordance with the requirements of the preset management specifications, through on-site surveys (manual line inspections) or calculations and identification using analysis software, the operating status of the proposed transfer pipeline is obtained and its high-consequence areas are identified.

[0050] S3, inspect and evaluate the pipeline integrity to determine the pipeline integrity status and distribution of high-risk points. Among them:

[0051] The specific process of pipeline integrity inspection and evaluation is as follows: conduct in-pipeline inspection, accurately and effectively grasp the specific location and size of internal defects in the pipeline, accurately analyze the strength and remaining life of the pipeline, and then make an objective evaluation of the integrity of the pipeline.

[0052] The process of determining the pipeline integrity status and the distribution of high-risk points is specifically as follows: determining the pipeline integrity status and the distribution of high-risk points based on the pipeline integrity evaluation report.

[0053] S4: Determine the sampling location and number of samples for pipeline testing and evaluation based on the initial status, operating status and pipeline integrity evaluation results of the proposed transfer pipeline.

[0054] The process of determining the sampling location and number of samples on site for pipeline testing and evaluation is as follows: formulate principles for on-site sampling of typical representative samples. The sampling frequency can be determined according to actual needs, or it can be considered as once every 2 kilometers. The samples taken should at least be able to reflect the impact of the worst working conditions of pipeline stress, the worst material properties and representatives of various types of material products.

[0055] S5, conduct routine material performance tests and hydrogen compatibility tests on the field sampling samples to determine the current performance status, hydrogen stress intensity factor, and fatigue crack growth rate of the field sampling samples.

[0056] On-site sampling samples refer to those that can reflect the impact of the worst working conditions of pipeline stress, the worst material properties and representatives of various types of material products.

[0057] Routine material performance tests include but are not limited to: chemical composition analysis, tensile performance test, and Charpy impact test.

[0058] The process of determining the current performance status is: determine it based on the results of conventional material performance tests, such as obtaining tensile properties such as elastic limit, elongation, elastic modulus, proportional limit, cross-sectional shrinkage, tensile strength, yield point, yield strength, etc. through material tensile tests, and determine the current conventional performance status based on the test results.

[0059] The process of determining the hydrogen stress intensity factor is as follows: the hydrogen stress intensity factor is calculated from the fracture toughness test.

[0060] The process of determining the fatigue crack growth rate is as follows: the fatigue crack growth rate is obtained from a fatigue crack growth rate test in a hydrogen environment.

[0061] S6: Based on the pipeline integrity evaluation results and current performance status, the pipeline degradation trend and remaining life are predicted, and combined with the material hydrogen compatibility test results for comprehensive evaluation, the applicability of the proposed transfer pipeline is determined, and suggestions for pipeline transfer of hydrogen are put forward. Among them:

[0062] The process of predicting pipeline degradation trend and remaining life is as follows: according to the initial state information, operating status and integrity evaluation results of the pipeline, data analysis is carried out to understand the pipeline corrosion situation. According to the corrosion mechanism and situation, a suitable mathematical model is selected, which can be a corrosion rate model, corrosion depth model, etc., and a mathematical equation describing the corrosion process is established. According to the existing data, the parameters in the mathematical model are estimated so that the model can better fit the actual corrosion situation. The model is verified using historical data, and the model parameters are adjusted according to the verification results to improve the prediction accuracy. According to the established mathematical model, the future development of pipeline corrosion defects is predicted, and the remaining life of the pipeline under normal conditions is calculated.

[0063] The process for determining the suitability of a proposed transfer pipeline is:

[0064] It can be seen from the test results of the conventional properties of the materials that the conventional properties of the test samples meet the acceptance limit requirements of GB / T 9711 or relevant product national standards, industry standards or enterprise standards, and the conventional properties are applicable.

[0065] Determine the material stress intensity application factor KIA (Applied Stress Intensity Factor) of the obtained material, KIA is calculated by fracture mechanics. Set the criterion for material hydrogen compatibility as follows: if the tested hydrogen stress intensity factor KIH ≥ max [KIA, 55 MPa√m], the material is suitable for the intended hydrogen transfer condition.

[0066] If KIH meets the evaluation criteria, the fatigue crack growth rate test is carried out under the same test conditions corresponding to the KIH test. Based on the test results, the service life of the pipeline in this corresponding hydrogen environment can be predicted, and combined with the remaining life of the pipeline predicted above under normal conditions, suggestions for pipeline hydrogen transfer are put forward.

[0067] Embodiment 1, as Figure 2 As shown, the specific implementation process of this solution may include:

[0068] (1) Data collection

[0069] Collection of historical data on pipeline construction, operation and maintenance. The collected information includes at least the pipeline design and completion documents; pipeline material data, including chemical composition analysis, yield strength, ultimate tensile strength and impact strength of the pipe, as well as welding process and welding material data; early transmission medium and its corrosiveness; maximum allowable operating pressure and historical operating pressure of the pipeline; accident and maintenance records; pressure test records when the pipeline is put into operation, pipeline internal and external inspection and integrity evaluation reports, pipeline internal and external corrosion protection information and cathodic protection test records, pipeline images and other related information.

[0070] (2) On-site investigation of pipeline conditions

[0071] Conduct on-site surveys of the current status of pipeline equipment and facilities, as well as the geological and environmental conditions along the pipeline. The on-site survey should at least include the geological, population, and building information around the pipeline; the location and depth of the pipeline, and compare it with the drawings; the locations where the pipeline crosses roads, railways, rivers, etc.; the location and number of inhabited buildings around the pipeline, and changes in high-consequence areas.

[0072] (3) Pipeline integrity detection and evaluation

[0073] The pipeline is inspected internally by deformation + magnetic leakage internal detection to determine the damage and defect distribution of the pipeline body, and the pipeline integrity evaluation is performed according to GB / T 42033. Combined with the basic technical information obtained in step 1, the pipeline damage law and trend are predicted, and the remaining life of the pipeline under normal conditions is predicted.

[0074] (4) On-site sampling of typical representative samples

[0075] The principles for on-site sampling of typical representative samples are as follows: select representative samples of materials from different categories of products, different sources of supply, and different furnace batches; for materials of the same category of products, source of supply, and furnace batches, it is advisable to take samples from the worst working conditions, and one sample can be taken from each location that is not in a bad working condition; at the same time, samples with the worst performance found in the data sorting in step one should also be sampled.

[0076] (5) Routine performance test of pipeline materials

[0077] Routine material performance testing.

[0078] The test items include chemical composition analysis, tensile properties test, Charpy impact test, and drop-weight tear test DWTT (Drop-Weight Tear Test) test for line pipes. The sample processing and test process comply with the requirements of GB / T 9711 and relevant product national standards, industry standards or enterprise standards.

[0079] (6) Evaluation of the applicability of conventional material performance

[0080] The conventional performance test results of the materials show that the conventional performance of the test samples meets the acceptance limit requirements of GB / T 9711 or relevant national standards, industry standards or enterprise standards for products, and the conventional performance is applicable. If the standard requirements are not met, hydrogen transfer is not recommended.

[0081] (7) Hydrogen compatibility test of pipeline materials

[0082] By simulating different hydrogen transportation environments, fracture toughness tests were carried out according to GB / T 34542.2 to obtain the hydrogen stress intensity factor KIH.

[0083] (8) Evaluation of material hydrogen compatibility and applicability

[0084] Determine the material stress intensity application factor KIA (Applied Stress Intensity Factor) of the obtained material, KIA is calculated by fracture mechanics. Set the material hydrogen compatibility criterion as follows: if the tested hydrogen stress intensity factor KIH ≥ max [KIA, 55 MPa√m], the material is suitable for the intended hydrogen transfer condition.

[0085] (9) Material fatigue crack growth rate test

[0086] In accordance with GB / T 34542.2, under the test conditions where the KIH results in Article (8) above can meet the evaluation criteria (simulating the same hydrogen transmission conditions), the corresponding fatigue crack growth rate test is carried out.

[0087] (10) Prediction of the remaining life of materials under hydrogen transport conditions

[0088] Based on the results of the fatigue crack growth rate test in Article (9), the remaining service life under this hydrogen transport condition can be predicted by calculation.

[0089] (11) Recommendations for preventing material failure in hydrogen pipeline transfer.

[0090] Based on the material test results of step (6) and step (8), combined with the information obtained in step (1) and step (2), it is judged whether the material can transfer hydrogen; based on the test results of step (3) and step (10), the damage / performance degradation that may occur in the material during the remaining service life is predicted, and targeted suggestions for pipeline transfer of hydrogen are put forward. The specific contents of the suggestions include: transfer at the original design pressure, transfer at the reduced pressure, and no transfer is recommended.

[0091] The present invention also provides a high-stress designed natural gas pipeline hydrogen transfer material applicability evaluation system, the specific technical scheme is as follows:

[0092] The first acquisition module is used to collect historical information on pipeline construction and operation and maintenance, and obtain initial state information of the proposed transfer pipeline;

[0093] The second acquisition module is used to: conduct on-site survey of pipeline conditions to obtain the operating status of the proposed transfer pipeline and the distribution of high-consequence areas;

[0094] The first determination module is used to: detect and evaluate pipeline integrity, determine pipeline integrity status and high-risk point distribution;

[0095] The second determination module is used to determine the sampling location and number of samples at the pipeline test evaluation site according to the initial state, operating status, distribution of high consequence areas and pipeline integrity evaluation results of the proposed transfer pipeline, wherein the pipeline integrity evaluation results refer to the pipeline integrity status and distribution of high risk points;

[0096] The third determination module is used to: perform material performance test and hydrogen compatibility test on the on-site sampling samples to determine the current performance status, hydrogen stress intensity factor and hydrogen fatigue crack growth rate of the on-site sampling samples;

[0097] The evaluation module is used to: predict pipeline degradation trends and remaining life based on pipeline integrity evaluation results and conventional material performance test results; determine the applicability of the proposed transfer pipeline through comprehensive evaluation based on conventional material performance test results and hydrogen stress intensity factor test results; predict the remaining life of the pipeline under hydrogen transmission conditions based on crack growth rate test results, and put forward recommendations for pipeline hydrogen transfer.

[0098] Based on the above solution, the present invention can also be improved as follows.

[0099] Furthermore, the historical information on pipeline engineering construction and operation and maintenance includes: pipeline design, completion documents, pipeline material data, chemical composition analysis results of pipes, yield strength, ultimate tensile strength-impact strength-welding process-welding material data, previous conveying medium, corrosiveness corresponding to the previous conveying medium, maximum allowable operating pressure of the pipeline, historical operating pressure, accident-maintenance records, pressure test records when the pipeline is put into production, pipeline internal and external inspection-integrity evaluation report, pipeline internal and external corrosion protection information-cathodic protection test records and at least one of pipeline image maps.

[0100] Furthermore, the on-site survey includes: environmental information of the geology, population, and buildings around the pipeline, pipeline location-burial depth information, roads through which the pipeline passes, railways through which the pipeline passes, rivers through which the pipeline passes, corresponding crossing locations, locations of inhabited buildings around the pipeline, the number of inhabited buildings around the pipeline, and at least one of changes in high consequence areas.

[0101] Furthermore, the process of determining the suitability of the proposed transfer pipeline is as follows: based on the pipeline integrity evaluation results and conventional material performance test results, the pipeline degradation trend and remaining life are predicted; combined with the conventional material performance test results and hydrogen stress intensity factor test results for comprehensive evaluation, the applicability of the proposed transfer pipeline is determined; combined with the crack growth rate test results, the remaining life of the pipeline under hydrogen transmission conditions is predicted, and suggestions for pipeline hydrogen transfer are put forward.

[0102] It can also be understood that the process of determining the suitability of the proposed transfer pipeline is: judging the conventional performance suitability of the current pipeline based on the conventional mechanical property test results; judging whether the hydrogen stress intensity factor meets the preset conditions, and determining the suitability of the proposed transfer pipeline based on the judgment results. According to the hydrogen fatigue crack growth rate, the service life in the hydrogen environment is predicted.

[0103] It should be noted that the beneficial effects of the suitability evaluation system for hydrogen transfer materials in a natural gas pipeline with a high stress design provided in the above embodiment are the same as the beneficial effects of the suitability evaluation method for hydrogen transfer materials in a natural gas pipeline with a high stress design provided in the above embodiment, which will not be repeated here. In addition, when realizing its functions, the system provided in the above embodiment only uses the division of the above functional modules as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the system can be divided into different functional modules according to actual conditions to complete all or part of the functions described above. In addition, the system and method embodiments provided in the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0104] like Figure 3 As shown, an electronic device 300 according to an embodiment of the present invention includes a processor 320, the processor 320 is coupled to a memory 310, and the memory 310 stores at least one computer program 330, and the at least one computer program 330 is loaded and executed by the processor 320, so that the electronic device 300 implements any of the above methods, specifically:

[0105] The electronic device 300 may have relatively large differences due to different configurations or performances, and may include one or more processors 320 (Central Processing Units, CPU) and one or more memories 310, wherein the one or more memories 310 store at least one computer program 330, and the at least one computer program 330 is loaded and executed by the one or more processors 320, so that the electronic device 300 implements a high-stress design natural gas pipeline hydrogen transfer material suitability evaluation method provided in the above embodiment. Of course, the electronic device 300 may also have components such as a wired or wireless network interface, a keyboard, and an input and output interface for input and output, and the electronic device 300 may also include other components for realizing the functions of the device, which will not be repeated here.

[0106] A computer-readable storage medium according to an embodiment of the present invention stores at least one computer program, and the at least one computer program is loaded and executed by a processor so that a computer implements any one of the above methods.

[0107] Optionally, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0108] In an exemplary embodiment, a computer program product or a computer program is also provided, the computer program product or the computer program comprising computer instructions, the computer instructions being stored in a computer-readable storage medium. A processor of an electronic device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic device performs any of the above methods.

[0109] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects and represent the definition of a specific order or sequence. The order of use of similar objects can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than the order shown or described.

[0110] Those skilled in the art know that the present invention can be implemented as a system, method or computer program product. Therefore, the present disclosure can be specifically implemented in the following forms, namely: it can be complete hardware, it can be complete software (including firmware, resident software, microcode, etc.), or it can be a combination of hardware and software, which is generally referred to as "circuit", "module" or "system" herein. In addition, in some embodiments, the present invention can also be implemented in the form of a computer program product in one or more computer-readable media, and the computer-readable medium contains computer-readable program code.

[0111] Any combination of one or more computer-readable media may be used. A computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, device, or device.

[0112] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for evaluating the suitability of materials for hydrogen transfer in natural gas pipelines with high stress design, characterized in that: include: Collect historical information on pipeline construction and operation and maintenance to obtain initial status information of the proposed transfer pipeline; Conduct on-site surveys of pipeline conditions to obtain the operating status of the proposed transfer pipeline and the distribution of high-consequence areas; Detect and evaluate pipeline integrity to determine pipeline integrity status and distribution of high-risk points; Determine the sampling location and number of samples for pipeline test and evaluation on-site according to the initial state, current operation status, distribution of high consequence areas and pipeline integrity evaluation results of the proposed transfer pipeline, wherein the pipeline integrity evaluation results include the pipeline integrity status and the distribution of high risk points; Conduct routine material performance tests and hydrogen compatibility tests on the on-site samples to determine the current routine performance status, hydrogen stress intensity factor and fatigue crack growth rate of the on-site samples; Based on the pipeline integrity evaluation results, the pipeline degradation trend and remaining life are predicted. Combined with the conventional material performance test results and hydrogen compatibility test results, a comprehensive evaluation is conducted to determine the suitability of the proposed transfer pipeline and put forward recommendations for pipeline hydrogen transfer.

2. The method for evaluating the suitability of hydrogen transfer materials in a natural gas pipeline with a high stress design according to claim 1 is characterized in that: The historical information on pipeline construction and operation and maintenance includes: pipeline design, completion documents, pipeline material data, chemical composition analysis results of pipes, yield strength, ultimate tensile strength-impact strength-welding process-welding material data, previous conveying medium, corrosiveness corresponding to the previous conveying medium, maximum allowable operating pressure of the pipeline, historical operating pressure, accident-maintenance records, pressure test records when the pipeline is put into production, pipeline internal and external inspection-integrity evaluation report, pipeline internal and external corrosion protection information-cathodic protection test records and at least one of pipeline image maps.

3. The method for evaluating the suitability of hydrogen transfer materials in a natural gas pipeline with a high stress design according to claim 1 is characterized in that: The on-site survey includes: environmental information on the geology, population, and buildings around the pipeline, pipeline location-burial depth information, roads through which the pipeline passes, railways through which the pipeline passes, rivers through which the pipeline passes, corresponding crossing locations, locations of inhabited buildings around the pipeline, the number of inhabited buildings around the pipeline, and at least one of changes in high consequence areas.

4. The method for evaluating the suitability of hydrogen transfer materials in a natural gas pipeline with a high stress design according to claim 1, characterized in that: The process of determining the suitability of the proposed transfer pipeline is: judging whether the hydrogen stress intensity factor meets the preset conditions, and judging whether the remaining life in the hydrogen environment predicted by the hydrogen fatigue crack growth rate can meet the requirements, and determining the suitability of the proposed transfer pipeline based on the judgment results.

5. A high stress design natural gas pipeline hydrogen transfer material suitability evaluation system, characterized in that: include: The first acquisition module is used to collect historical information on pipeline construction and operation and maintenance, and obtain initial state information of the proposed transfer pipeline; The second acquisition module is used to: conduct on-site survey of pipeline conditions to obtain the operating status of the proposed transfer pipeline and the distribution of high-consequence areas; The first determination module is used to: detect and evaluate pipeline integrity, determine pipeline integrity status and high-risk point distribution; The second determination module is used to determine the sampling location and sampling quantity of the pipeline test evaluation site according to the initial state, operation status, distribution of high consequence areas and pipeline integrity evaluation results of the proposed transfer pipeline, wherein the pipeline integrity evaluation results include the pipeline integrity status and the distribution of high risk points; The third determination module is used to: perform material performance test and hydrogen compatibility test on the field sampling samples to determine the current performance status, hydrogen stress intensity factor and fatigue crack growth rate of the field sampling samples; The evaluation module is used to: predict pipeline degradation trends and remaining life based on pipeline integrity evaluation results, conduct a comprehensive evaluation based on conventional material performance test results and hydrogen compatibility test results, determine the applicability of the proposed transfer pipeline, and make recommendations for pipeline hydrogen transfer.

6. A high stress designed natural gas pipeline hydrogen transfer material suitability evaluation system according to claim 5, characterized in that: The historical information on pipeline construction and operation and maintenance includes: pipeline design, completion documents, pipeline material data, chemical composition analysis results of pipes, yield strength, ultimate tensile strength-impact strength-welding process-welding material data, previous conveying medium, corrosiveness corresponding to the previous conveying medium, maximum allowable operating pressure of the pipeline, historical operating pressure, accident-maintenance records, pressure test records when the pipeline is put into production, pipeline internal and external inspection-integrity evaluation report, pipeline internal and external corrosion protection information-cathodic protection test records and at least one of pipeline image maps.

7. The high stress design natural gas pipeline hydrogen transfer material suitability evaluation system according to claim 5 is characterized in that: The on-site survey includes: environmental information on the geology, population, and buildings around the pipeline, pipeline location-burial depth information, roads through which the pipeline passes, railways through which the pipeline passes, rivers through which the pipeline passes, corresponding crossing locations, locations of inhabited buildings around the pipeline, the number of inhabited buildings around the pipeline, and at least one of changes in high consequence areas.

8. The high stress design natural gas pipeline hydrogen transfer material suitability evaluation system according to claim 5 is characterized in that: The process of determining the suitability of the proposed transfer pipeline is: judging whether the hydrogen stress intensity factor meets the preset conditions, and judging whether the remaining life in the hydrogen environment predicted by the hydrogen fatigue crack growth rate can meet the requirements, and determining the suitability of the proposed transfer pipeline based on the judgment results.

9. An electronic device, characterized in that: The electronic device comprises a processor, the processor is coupled to a memory, at least one computer program is stored in the memory, and the at least one computer program is loaded and executed by the processor so that the electronic device implements the method according to any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores at least one computer program, and the at least one computer program is loaded and executed by a processor so that a computer implements the method according to any one of claims 1 to 4.

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