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

Abstract

The invention discloses a method, a system and equipment for evaluating the applicability of a hydrogen transferring material of a natural gas pipeline, and relates to the technical field of applicability evaluation of the hydrogen transferring material of the pipeline, and the method comprises the following steps: determining a natural gas pipeline to be evaluated through a field sampling mode; performing a pipeline material performance test on the natural gas pipeline to be evaluated to obtain a hydrogen embrittlement sensitivity coefficient; and according to the hydrogen brittleness sensitivity coefficient and a preset critical hydrogen brittleness sensitivity coefficient, determining an evaluation result of the hydrogen transferring material applicability of the natural gas pipeline to be evaluated. The objectivity of the natural gas pipeline to be evaluated can be improved through the hydrogen embrittlement sensitivity coefficient and the preset critical hydrogen embrittlement sensitivity coefficient in the scheme.

Description

Background Art

[0002] Since in the process of transferring hydrogen through natural gas pipelines, it is necessary to ensure that the performance of the natural gas pipelines used for transfer allows the transportation of hydrogen materials, therefore, it is crucial to accurately and quickly determine whether the existing pipe sections can allow the transmission of hydrogen materials. The judgment process for pipe section performance in the prior art is too cumbersome and involves too many parameters, so it is impossible to quickly give a judgment or evaluation result. Summary of the invention

[0003] 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:

[0004] 1) In the first aspect, the present invention provides a method for evaluating the suitability of hydrogen transfer materials for natural gas pipelines with low stress design, and the specific technical scheme is as follows:

[0005] Determine the natural gas pipeline to be evaluated by on-site sampling;

[0006] Conducting a pipeline material performance test on the natural gas pipeline to be evaluated to obtain a hydrogen embrittlement sensitivity coefficient;

[0007] The evaluation result of the suitability of the hydrogen transfer material of the natural gas pipeline to be evaluated is determined based on the hydrogen embrittlement sensitivity coefficient and the preset critical hydrogen embrittlement sensitivity coefficient.

[0008] The beneficial effects of the low-stress designed natural gas pipeline hydrogen transfer material applicability evaluation method provided by the present invention are as follows:

[0009] By determining the natural gas pipeline to be evaluated through on-site sampling, it is possible to target the natural gas pipelines with special locations, etc., providing a more reliable data basis for the evaluation results. In addition, through on-site sampling, it is also possible to combine manual experience and select pipelines that may have major hidden dangers as natural gas pipelines to be evaluated. The evaluation results obtained in this way can avoid the loss caused by the large discrepancy between the evaluation results and the actual situation during the subsequent use of the pipeline due to the failure to sample the problematic natural gas pipelines. At the same time, the hydrogen embrittlement sensitivity coefficient in this scheme and the preset critical hydrogen embrittlement sensitivity coefficient can improve the objectivity of the natural gas pipeline to be evaluated.

[0010] Based on the above solution, the present invention can also be improved as follows.

[0011] Furthermore, the pipeline material performance test includes: conventional performance test and slow tensile test.

[0012] Furthermore, it also includes: collecting historical data on pipeline engineering construction and operation and maintenance of the natural gas pipeline to be evaluated, and storing the collected data.

[0013] Furthermore, it also includes: conducting on-site exploration of the status information of pipeline equipment and facilities of the natural gas pipeline to be evaluated and the geological-environmental conditions along the pipeline, obtaining exploration results, and storing the exploration results.

[0014] 2) In the second aspect, the present invention also provides a low-stress designed natural gas pipeline hydrogen transfer material suitability evaluation system, the specific technical solution is as follows:

[0015] The sampling module is used to: determine the natural gas pipeline to be evaluated by on-site sampling;

[0016] The test module is used to: perform pipeline material performance test on the natural gas pipeline to be evaluated to obtain a hydrogen embrittlement sensitivity coefficient;

[0017] The evaluation module is used to determine the evaluation result of the suitability of the hydrogen transfer material of the natural gas pipeline to be evaluated according to the hydrogen embrittlement sensitivity coefficient and the preset critical hydrogen embrittlement sensitivity coefficient.

[0018] Based on the above solution, the present invention can also be improved as follows.

[0019] Furthermore, the pipeline material performance test includes: conventional performance test and slow tensile test.

[0020] Furthermore, it also includes: a collection module for collecting historical data on the pipeline engineering construction and operation and maintenance of the natural gas pipeline to be evaluated, and storing the collected data.

[0021] Furthermore, it also includes: an exploration module for: conducting on-site exploration of the status information of pipeline equipment and facilities of the natural gas pipeline to be evaluated and the geological-environmental conditions along the pipeline, obtaining exploration results, and storing the exploration results.

[0022] 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.

[0023] 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.

[0024] 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

[0025] 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:

[0026] 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 low stress design according to an embodiment of the present invention;

[0027] Figure 2 The second flow chart of a method for evaluating the suitability of a natural gas pipeline hydrogen transfer material with a low stress design according to an embodiment of the present invention;

[0028] Figure 3 The figure is a structural framework diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] 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.

[0030] like Figure 1 as well as Figure 2 As shown, a method for evaluating the suitability of a natural gas pipeline hydrogen transfer material with a low stress design according to an embodiment of the present invention comprises the following steps:

[0031] S1, determine the natural gas pipeline to be evaluated through on-site sampling.

[0032] On-site sampling methods can include the following:

[0033] The first one is to select natural gas pipelines with potential safety hazards or high-consequence areas as the natural gas pipelines to be evaluated through manual inspection and on-site exploration.

[0034] Among them, after manual inspection, the specific location of each natural gas pipeline with safety hazards or high consequence areas is recorded, and the specific locations of all natural gas pipelines with safety hazards or high consequence areas are integrated to generate a mapping table. The natural gas pipelines corresponding to each specific location in the mapping table are classified into safety hazard levels, and the natural gas pipelines with the highest level are used as the natural gas pipelines to be evaluated.

[0035] Alternatively, in the mapping table, a natural gas pipeline is randomly selected as the natural gas pipeline to be evaluated.

[0036] The second method is to formulate on-site sampling principles for 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.

[0037] S2, performing pipeline material performance tests and conventional performance tests on the natural gas pipeline to be evaluated to obtain a hydrogen embrittlement sensitivity coefficient.

[0038] The pipeline material performance test includes: conducting a slow strain rate tensile test according to the service conditions (service year) to obtain the hydrogen embrittlement sensitivity coefficient HSC (HSC = (material performance test value under air conditions - material performance test value under hydrogen conditions) / material performance test value under air conditions).

[0039] S3, determining the evaluation result of the suitability of the hydrogen transfer material of the natural gas pipeline to be evaluated according to the hydrogen embrittlement sensitivity coefficient and the preset critical hydrogen embrittlement sensitivity coefficient.

[0040] Set the critical hydrogen embrittlement sensitivity coefficient (preset critical hydrogen embrittlement sensitivity coefficient) CHSC (Critical Hydrogen Susceptibility Coefficient). The setting of the critical hydrogen embrittlement sensitivity coefficient CHSC should be determined in combination with the actual working conditions, and CHSC=25% can also be taken. If HSC≤CHSC is satisfied, the material is suitable for the intended hydrogen transfer working conditions. If not satisfied, adjust the hydrogen test environment and re-test the slow strain rate tensile test. Or directly give the suitability evaluation results of the hydrogen transfer material that is not recommended for transfer.

[0041] The beneficial effects of the low-stress designed natural gas pipeline hydrogen transfer material applicability evaluation method provided by the present invention are as follows:

[0042] By determining the natural gas pipeline to be evaluated through on-site sampling, we can target the natural gas pipelines with special locations, etc., and provide a more reliable data basis for the evaluation results. In addition, through on-site sampling, we can also combine manual experience to select pipelines that may have major hidden dangers as natural gas pipelines to be evaluated. The evaluation results obtained in this way can avoid losses caused by the failure to sample problematic natural gas pipelines during subsequent pipeline use, resulting in a large discrepancy between the evaluation results and the actual situation.

[0043] Furthermore, the pipeline material performance test includes: conventional performance test and slow tensile test.

[0044] Conventional performance tests include but are not limited to: tensile performance test, impact performance test, hardness performance test, etc.

[0045] Furthermore, it also includes: collecting historical data on pipeline engineering construction and operation and maintenance of the natural gas pipeline to be evaluated, and storing the collected data.

[0046] 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.

[0047] Furthermore, it also includes: conducting on-site exploration of the status information of pipeline equipment and facilities of the natural gas pipeline to be evaluated and the geological-environmental conditions along the pipeline, obtaining exploration results, and storing the exploration results.

[0048] 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.

[0049] In the above embodiments, although the steps are numbered S1, S2, etc., these are only specific embodiments given by the present invention. Those skilled in the art may adjust the execution order of S1, S2, etc. according to actual conditions, which is also within the protection scope of the present invention. It can be understood that in some embodiments, some or all of the above embodiments may be included.

[0050] Embodiment 1, as Figure 2 As shown, the present invention adopts the following technical solution, comprising the following steps:

[0051] (1) Data collection

[0052] 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.

[0053] (2) On-site investigation of pipeline conditions

[0054] 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.

[0055] (3) Pipeline inspection and integrity assessment

[0056] Conduct pipeline inspection and integrity evaluation to determine pipeline damage and defect distribution. Formulate on-site sampling principles for typical representative samples. The sampling frequency can be determined according to actual needs, or it can be considered as one sample every 2 kilometers. The samples taken should at least reflect the impact of the worst working conditions of pipeline stress, the worst material properties, and representatives of various material products.

[0057] (4) Pipeline material performance test

[0058] Carry out routine performance tests on pipeline materials and material hydrogen compatibility tests. Carry out slow strain rate tensile tests to obtain the hydrogen embrittlement sensitivity coefficient HSC (HSC = (material performance test value under air conditions - material performance test value under hydrogen conditions) / material performance test value under air conditions). Set the critical hydrogen embrittlement sensitivity coefficient CHSC (Critical Hydrogen Susceptibility Coefficient). The setting of the critical hydrogen embrittlement sensitivity coefficient CHSC should be determined in combination with the actual working conditions, and CHSC = 25% can also be taken. If HSC ≤ CHSC is satisfied, the material is suitable for the intended hydrogen transfer conditions.

[0059] (5) Material suitability evaluation

[0060] The material's conventional performance applicability evaluation and material's hydrogen compatibility applicability evaluation were carried out separately.

[0061] (6) Recommendations for preventing material failure in hydrogen pipeline transfer.

[0062] Based on the results of the material suitability evaluation in step (5), combined with the information obtained in steps (1), (2), and (3), the possible damage / performance degradation of the material during its remaining service life is predicted, and targeted recommendations for pipeline hydrogen transfer are made. The specific recommendations include: transfer at the original design pressure, transfer at the reduced pressure, and no transfer is recommended.

[0063] The present invention also provides a low-stress designed natural gas pipeline hydrogen transfer material applicability evaluation system, the specific technical scheme is as follows:

[0064] The sampling module is used to: determine the natural gas pipeline to be evaluated by on-site sampling;

[0065] The test module is used to: perform pipeline material performance test on the natural gas pipeline to be evaluated to obtain a hydrogen embrittlement sensitivity coefficient;

[0066] The evaluation module is used to determine the evaluation result of the suitability of the hydrogen transfer material of the natural gas pipeline to be evaluated according to the hydrogen embrittlement sensitivity coefficient and the preset critical hydrogen embrittlement sensitivity coefficient.

[0067] Based on the above solution, the present invention can also be improved as follows.

[0068] Furthermore, the pipeline material performance test includes at least one of a conventional performance test and a slow tensile test.

[0069] Furthermore, it also includes: a collection module for collecting historical data on the pipeline engineering construction and operation and maintenance of the natural gas pipeline to be evaluated, and storing the collected data.

[0070] Furthermore, it also includes: an exploration module for: conducting on-site exploration of the status information of pipeline equipment and facilities of the natural gas pipeline to be evaluated and the geological-environmental conditions along the pipeline, obtaining exploration results, and storing the exploration results.

[0071] It should be noted that the beneficial effects of the low-stress designed natural gas pipeline hydrogen transfer material suitability evaluation system provided in the above embodiment are the same as the beneficial effects of the low-stress designed natural gas pipeline hydrogen transfer material suitability evaluation method, which will not be repeated here. In addition, when the system provided in the above embodiment realizes its functions, it only uses the division of the above-mentioned functional modules as an example. In actual applications, the above-mentioned 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.

[0072] 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:

[0073] 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 low-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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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 low stress design, characterized in that: include: Determine the natural gas pipeline to be evaluated by on-site sampling; Conducting a pipeline material performance test on the natural gas pipeline to be evaluated to obtain a hydrogen embrittlement sensitivity coefficient; The evaluation result of the suitability of the hydrogen transfer material of the natural gas pipeline to be evaluated is determined based on the hydrogen embrittlement sensitivity coefficient and the preset critical hydrogen embrittlement sensitivity coefficient.

2. The method for evaluating the suitability of hydrogen transfer materials in a natural gas pipeline with a low stress design according to claim 1 is characterized in that: The pipeline material performance test includes: conventional performance test and slow tensile test.

3. The method for evaluating the suitability of hydrogen transfer materials in a natural gas pipeline with a low stress design according to claim 1 is characterized in that: Also includes: The historical data on the pipeline engineering construction and operation and maintenance of the natural gas pipeline to be evaluated are collected, and the collected data are stored.

4. The method for evaluating the suitability of hydrogen transfer materials in a natural gas pipeline with a low stress design according to claim 1, characterized in that: Also includes: Conduct on-site surveys of the status quo of pipeline equipment and facilities of the natural gas pipeline to be evaluated and the geological and environmental conditions along the pipeline to obtain survey results, which are then stored.

5. A low-stress designed natural gas pipeline hydrogen transfer material suitability evaluation system, characterized in that: include: The sampling module is used to: determine the natural gas pipeline to be evaluated by on-site sampling; The test module is used to: perform pipeline material performance test on the natural gas pipeline to be evaluated to obtain a hydrogen embrittlement sensitivity coefficient; The evaluation module is used to determine the evaluation result of the suitability of the hydrogen transfer material of the natural gas pipeline to be evaluated according to the hydrogen embrittlement sensitivity coefficient and the preset critical hydrogen embrittlement sensitivity coefficient.

6. A low-stress designed natural gas pipeline hydrogen transfer material suitability evaluation system according to claim 5, characterized in that: The pipeline material performance test includes: conventional performance test and slow tensile test.

7. The low stress design natural gas pipeline hydrogen transfer material suitability evaluation system according to claim 5 is characterized in that: Also includes: The collection module is used to collect the historical data on the pipeline engineering construction and operation and maintenance of the natural gas pipeline to be evaluated, and store the collected data.

8. The low stress design natural gas pipeline hydrogen transfer material suitability evaluation system according to claim 5 is characterized in that: Also includes: The exploration module is used to conduct on-site exploration of the status information of pipeline equipment and facilities of the natural gas pipeline to be evaluated and the geological-environmental conditions along the pipeline, obtain exploration results, and store the exploration 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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