Nonmetal pipeline defect evaluation method, device, equipment and medium
Patent Information
- Application Number
- CN202410404033.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-05
- Publication Date
- 2025-10-17
Smart Images
Figure CN120801443A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of oil pipeline detection, and in particular to a non-metal pipeline defect evaluation method, device, equipment and medium. BACKGROUND
[0002] Polyethylene non-metal pipelines generally have the characteristics of corrosion resistance, long service life, excellent hydraulic characteristics, etc., and have been widely used in oilfield gathering and transportation fields. Due to the complex factors affecting the quality and performance of polyethylene non-metal pipelines, there are great differences in raw materials, production processes, structural characteristics, etc. between polyethylene non-metal pipelines and steel pipelines. Polyethylene non-metal pipelines have poor impact resistance, materials are prone to degradation, and connection parts are prone to falling off, and accidents still occur frequently.
[0003] More than 90% of polyethylene non-metal pipelines in oilfields are buried and laid, and different types of defects such as bubbling, aging, and missing may occur. For this reason, it is difficult for conventional non-destructive testing technologies based on sound, light, electricity, and magnetism to effectively detect various defects of polyethylene non-metal pipelines without affecting pipeline production and operation. SUMMARY
[0004] In view of the problems in the prior art, the present application provides a non-metal pipeline defect evaluation method, device, equipment and medium.
[0005] The present application provides a non-metal pipeline defect evaluation method, comprising:
[0006] obtaining a two-dimensional map of dielectric characteristic values of a pipeline to be tested;
[0007] determining the length and width of each defect on the pipeline to be tested based on the two-dimensional map and the dielectric characteristic values of different defect types preset;
[0008] determining defect evaluation information of a pipe body region of the pipeline to be tested and defect evaluation information of a joint region of the pipeline to be tested according to the length and width of each defect on the pipeline to be tested;
[0009] determining the defect grade of the pipeline to be tested according to the defect evaluation information of the pipe body region and the defect evaluation information of the joint region.
[0010] In one embodiment, the determination of the length and width of each defect on the pipeline to be tested based on the two-dimensional map and the dielectric characteristic values of different defect types preset comprises:
[0011] determining the position region of each defect on the two-dimensional map of the pipeline to be tested based on the two-dimensional map and the dielectric characteristic values of different defect types preset;
[0012] Based on the dielectric characteristic value belonging to the location area, a coordinate line segment representing the length and width of the defect on the location area is determined, and a numerical value of the coordinate line segment is calculated as the length and width of the defect.
[0013] In one embodiment, the defect evaluation information of the pipe body area includes an accumulated defect area ratio, an accumulated defect length ratio, a single defect length ratio of the largest length, an accumulated defect width ratio, and a single defect width ratio of the largest width. Accordingly, the determination of the defect evaluation information of the pipe body area of the to-be-tested pipeline according to the length and width of each defect on the to-be-tested pipeline includes:
[0014] The defect evaluation information of the pipe body area of the to-be-tested pipeline is determined according to the length and width of each defect on the to-be-tested pipeline by using the following calculation methods:
[0015] The accumulated defect area ratio is: where A is the area of a single defect, A = l × w, l is the length of the defect, and w is the width of the defect; and i is the number of defects.
[0016] S is the detection area of the to-be-tested pipeline S = L × W, L is the length of the detection surface, and W is the circumference of the detection surface.
[0017] The accumulated defect length ratio is:
[0018] The single defect length ratio of the largest length is:
[0019] The accumulated defect width ratio is:
[0020] The single defect width ratio of the largest width is:
[0021] In one embodiment, the defect evaluation information of the joint area includes a ratio of the accumulated circumferential length of the defect at the joint part to the circumference of the joint and a ratio of the maximum circumferential length of the continuous defect-free part at the joint part to the circumference of the joint. Accordingly, the determination of the defect evaluation information of the joint area of the to-be-tested pipeline according to the length and width of each defect on the to-be-tested pipeline includes:
[0022] The defect evaluation information of the joint area of the to-be-tested pipeline is determined according to the length and width of each defect on the to-be-tested pipeline by using the following calculation methods:
[0023] The ratio of the accumulated circumferential length of the defect at the joint part to the circumference of the joint is:
[0024] The ratio of the maximum circumferential length of the continuous defect-free part at the joint part to the circumference of the joint is: w n The maximum circumferential length of the continuous defect-free part of the joint part.
[0025] In one embodiment, the two-dimensional map of the dielectric characteristic value of the to-be-tested pipeline is obtained by:
[0026] The microwave detection technology is used to detect the to-be-tested pipeline, and a two-dimensional map of the dielectric characteristic value of the to-be-tested pipeline is obtained, wherein the horizontal coordinate represents the axial length of the pipeline, and the vertical coordinate represents the circumferential length of the pipeline.
[0027] In one embodiment, the defect level of the to-be-tested pipeline is determined according to the defect evaluation information of the pipe body region and the defect evaluation information of the joint region, including:
[0028] The defect level of the pipe body region is determined according to the defect evaluation information of the pipe body region and the first defect level evaluation table.
[0029] The defect level of the joint region is determined according to the defect evaluation information of the joint region and the second defect level evaluation table.
[0030] The application further provides a non-metal pipeline defect evaluation device, including:
[0031] The detection module is configured to obtain a two-dimensional map of the dielectric characteristic value of the to-be-tested pipeline.
[0032] The determination module is configured to determine the length and width of each defect on the to-be-tested pipeline based on the two-dimensional map and the dielectric characteristic values of different defect types in the preset.
[0033] The processing module is configured to determine the defect evaluation information of the pipe body region of the to-be-tested pipeline and the defect evaluation information of the joint region of the to-be-tested pipeline according to the length and width of each defect on the to-be-tested pipeline.
[0034] The judgment module is configured to determine the defect level of the to-be-tested pipeline according to the defect evaluation information of the pipe body region and the defect evaluation information of the joint region.
[0035] The application further provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned non-metal pipeline defect evaluation method when executing the program.
[0036] The application further provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program is executable by a processor to implement the above-mentioned non-metal pipeline defect evaluation method.
[0037] The application provides a non-metal pipeline defect evaluation method, device, equipment and medium, the length and width of each defect on the pipeline are obtained through the two-dimensional atlas of the dielectric characteristic value of the pipeline, then the defect evaluation information of the pipe body area and the joint area of the pipeline is determined according to the length and width, finally the defect grade of the pipeline to be tested is determined according to the defect evaluation information of the pipe body area and the joint area, whether the detected non-metal pipeline needs to be repaired can be quickly and intuitively judged, and the defect of the current non-metal pipeline is judged according to the type and use experience of the polyethylene non-metal pipeline, so that the defect that the repair is not timely or excessive repair is overcome. BRIEF DESCRIPTION OF DRAWINGS
[0038] In order to more clearly illustrate the technical solutions in the application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.
[0039] Figure 1 It is a flowchart of the non-metal pipeline defect evaluation method provided by the application.
[0040] Figure 2 It is a structural schematic diagram of the non-metal pipeline defect evaluation device provided by the application.
[0041] Figure 3 It is a structural schematic diagram of the electronic equipment provided by the application. DETAILED DESCRIPTION
[0042] In order to make the purpose, technical scheme and advantages of the application more clear, the technical scheme in the application will be described clearly and completely in combination with the drawings in the application. Obviously, the described embodiments are some embodiments of the application, not all embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the application.
[0043] The application provides a non-metal pipeline defect evaluation method, device, equipment and medium. Figures 1-3 The application provides a non-metal pipeline defect evaluation method, device, equipment and medium.
[0044] Figure 1 A flowchart of the non-metal pipeline defect evaluation method provided by the application is shown, referring to Figure 1 The method comprises:
[0045] 11. Obtain the two-dimensional atlas of the dielectric characteristic value of the pipeline to be tested;
[0046] 12. Based on the two-dimensional map and the preset dielectric characteristic values of different defect types, the length and width of each defect on the to-be-tested pipeline are determined;
[0047] 13. Based on the length and width of each defect on the to-be-tested pipeline, the defect evaluation information of the pipe body region of the to-be-tested pipeline and the defect evaluation information of the joint region of the to-be-tested pipeline are determined;
[0048] 14. Based on the defect evaluation information of the pipe body region and the defect evaluation information of the joint region, the defect grade of the to-be-tested pipeline is determined.
[0049] Needless to say, polyethylene non-metal pipelines are generally corrosion-resistant, have a long service life, excellent hydraulic characteristics, and have been widely used in oilfield gathering and transportation fields. Due to the complex factors affecting the quality and performance of polyethylene non-metal pipelines, the raw materials, production processes, and structural characteristics of polyethylene non-metal pipelines are very different from steel pipelines. Polyethylene non-metal pipelines have poor impact resistance, materials are prone to degradation, and connection parts are prone to falling off, and accidents still occur frequently.
[0050] More than 90% of polyethylene non-metal pipelines in oilfields are buried and laid, and different types of defects such as bubbling, aging, and missing may occur. In this regard, it is difficult for conventional non-destructive testing technologies based on sound, light, electricity, and magnetism to effectively detect various defects of polyethylene non-metal pipelines without affecting the production and operation of the pipeline.
[0051] In the present application, the dielectric properties of the pipeline are used to obtain the corresponding dielectric characteristics. By analyzing the dielectric characteristics, the defects of the pipeline are obtained, and then the defects are evaluated to obtain the defect grade of the pipeline. Based on the defect grade, corresponding treatment measures are taken for the pipeline.
[0052] Dielectric properties refer to the property of storing and losing static energy under the action of an electric field. In the present application, microwave detection technology can be used to detect the to-be-tested pipeline to obtain a two-dimensional map of the dielectric characteristic values of the to-be-tested pipeline. The horizontal coordinate of the two-dimensional map represents the axial length of the pipeline, and the vertical coordinate represents the circumferential length of the pipeline. In the two-dimensional map, the dielectric characteristic values correspond to each position point on the pipeline. Therefore, based on the dielectric characteristic values in the two-dimensional map, the defect positions on the pipeline can be calculated.
[0053] In the present application, different defects on the pipeline have different dielectric characteristic values detected by the microwave technology. For example, the dielectric characteristic value of the normal surface on the pipeline detected by the microwave technology is a, the dielectric characteristic value of the blister on the pipeline detected by the microwave technology is b, and the dielectric characteristic value of the aging on the pipeline detected by the microwave technology is c. Therefore, the two-dimensional map and the preset dielectric characteristic values of different defect types can determine the position area of each defect on the pipeline to be detected. The dielectric characteristic value in the position area belongs to the dielectric characteristic value generated by the corresponding defect. For example, the dielectric characteristic value b appears in an area surrounded by a plurality of dielectric characteristic values a, and at this time, the area is the area of the defect of the blister.
[0054] In the present application, the two-dimensional map and the surface of the pipeline have a position conversion method. Through the position conversion method, the position area of the defect on the two-dimensional map can be converted to the actual position of the pipeline, and at this time, the length and width of each defect on the pipeline can be obtained. It should be noted that most of the defects on the pipeline are irregular, and in order to reflect the uniformity of the calculation, the statistical information is the length and width of the defect.
[0055] In the present application, for the pipeline engineering buried by multiple pipelines, the position where the pipeline can generate defects can be the pipe body or the pipeline joint. Therefore, the defects of each pipeline need to be evaluated respectively. For the evaluation of a pipeline, different angle evaluation information is needed. For example, for the pipe body, the evaluation angles are: the defect area ratio, the cumulative defect length ratio, the length of the largest single defect ratio, the cumulative defect width ratio, and the width of the largest single defect ratio. For example, for the pipeline joint, the evaluation angles are: the proportion of the cumulative circumferential length of the joint defect to the joint circumference, and the proportion of the maximum circumferential length of the continuous defect-free part of the joint to the joint circumference. Therefore, based on the preset calculation method of the above different evaluation angles, the length and width of each defect on the pipeline to be detected can be determined. The defect evaluation information of the pipe body area of the pipeline to be detected and the defect evaluation information of the joint area of the pipeline to be detected.
[0056] In the present application, finally, according to the defect evaluation information of the pipe body area and the defect evaluation information of the joint area, the preset calculation method or judgment rule is used to determine the defect grade of the pipeline to be detected. The defect grade can include I grade (no repair needed), II grade (monitoring use), and III grade (immediate repair).
[0057] The non-metal pipeline defect evaluation method provided by the application can quickly and intuitively determine whether the detected non-metal pipeline needs to be repaired, and overcomes the shortcomings of the current method of judging whether the pipeline needs to be repaired according to the defect type and use experience of the polyethylene non-metal pipeline, thereby avoiding the problems of delayed repair or excessive repair.
[0058] In the further method of the above method, the process of determining the length and width of each defect on the pipeline to be detected based on the two-dimensional map and the preset dielectric characteristic values of different defect types is mainly explained, and the process is as follows:
[0059] Based on the two-dimensional map and the preset dielectric characteristic values of different defect types, the position area of each defect on the pipeline to be detected on the two-dimensional map is determined.
[0060] Based on the dielectric characteristic values belonging to the position area, the coordinate line segment representing the length and width of the defect on the position area is determined, and the numerical value of the coordinate line segment is calculated as the length and width of the defect.
[0061] For this purpose, it should be noted that in the present application, based on the two-dimensional map and the preset dielectric characteristic values of different defect types, the position area of each defect on the pipeline to be detected on the two-dimensional map is determined.
[0062] The two-dimensional map and the surface of the pipeline have a position conversion method, by which the position area of the defect on the two-dimensional map can be converted to the actual position of the pipeline, and at this time, the length and width of each defect on the pipeline can be obtained.
[0063] Based on the dielectric characteristic values belonging to the position area, the coordinate line segment representing the length and width of the defect on the position area is determined, and the numerical value of the coordinate line segment is calculated as the length and width of the defect. The numerical value of the coordinate line segment can also be converted into the length and width of the actual position of the defect on the pipeline by a position conversion formula.
[0064] The further method of the present application can simplify the calculation method and adaptively evaluate irregular defect areas by the length and width of the defect area on the two-dimensional map.
[0065] In the further method of the above method, the defect evaluation information of the pipe body region includes a cumulative defect area proportion, a cumulative defect length proportion, a single defect length proportion of the largest length, a cumulative defect width proportion, and a single defect width proportion of the largest width, and accordingly, according to the length and width of each defect on the to-be-tested pipeline, the defect evaluation information of the pipe body region of the to-be-tested pipeline is determined, specifically as follows:
[0066] According to the length and width of each defect on the to-be-tested pipeline, the defect evaluation information of the pipe body region of the to-be-tested pipeline is determined by using the following calculation method:
[0067] Cumulative defect area proportion: Wherein, A is the area of a single defect, A = l x w, l is the length of the defect, and w is the width of the defect; i is the number of defects;
[0068] S is the detection surface area of the to-be-tested pipeline S = L x W, L is the length of the detection surface, and W is the circumference of the detection surface;
[0069] Cumulative defect length proportion:
[0070] Single defect length proportion of the largest length:
[0071] Cumulative defect width proportion:
[0072] Single defect width proportion of the largest width:
[0073] The defect evaluation information of the joint region includes a proportion of a cumulative circumferential length of defects at a joint part to a joint circumference and a proportion of a maximum circumferential length of a continuous defect-free part at the joint part to the joint circumference, and accordingly, according to the length and width of each defect on the to-be-tested pipeline, the defect evaluation information of the joint region of the to-be-tested pipeline is determined, specifically as follows:
[0074] According to the length and width of each defect on the to-be-tested pipeline, the defect evaluation information of the joint region of the to-be-tested pipeline is determined by using the following calculation method:
[0075] Proportion of cumulative circumferential length of defects at joint part to joint circumference:
[0076] Proportion of maximum circumferential length of continuous defect-free part at joint part to joint circumference: w n Maximum circumferential length of continuous defect-free part at joint part.
[0077] In a further method of the present application, the defect level of the pipe to be tested is determined according to the defect evaluation information of the pipe body region and the defect evaluation information of the joint region, specifically:
[0078] The defect level of the pipe body region is determined according to the defect evaluation information of the pipe body region and the first defect level evaluation table;
[0079] The defect level of the joint region is determined according to the defect evaluation information of the joint region and the second defect level evaluation table.
[0080] The P s , P l , P l-max , P w , P w-max 5 indexes are used to establish a defect evaluation level table, and the pipe containing defects is divided into I level (no repair needed), II level (monitoring use), III level (immediate repair):
[0081]
[0082] The P w , P w-n 2 indexes are used to establish a defect evaluation level table, and the joint containing defects is divided into I level (no repair needed), II level (monitoring use), III level (immediate repair):
[0083] Rank P w-n ]]> P w ]]> Rank I ＞70％ ≤10％ Rank II ＞70％ > 10% and < 30% Rank III ≤70％ -
[0084] The non-metal pipe defect evaluation device provided by the present application is described below, and the non-metal pipe defect evaluation device described below can be correspondingly referred to the non-metal pipe defect evaluation method described above.
[0085] Figure 2 The structure diagram of the non-metal pipe defect evaluation device provided by the present application is shown, referring to Figure 2 The device comprises a detection module 21, a determination module 22, a processing module 23 and a judgment module 24, wherein:
[0086] The detection module is used to obtain the two-dimensional spectrum of the dielectric characteristic value of the pipe to be tested;
[0087] The determination module is used to determine the length and width of each defect on the pipe to be tested based on the two-dimensional spectrum and the dielectric characteristic value of different defect types preset;
[0088] The processing module is used to determine the defect evaluation information of the pipe body region of the pipe to be tested and the defect evaluation information of the joint region of the pipe to be tested according to the length and width of each defect on the pipe to be tested;
[0089] A judging module is configured to determine a defect level of the to-be-tested pipeline according to the defect evaluation information of the pipe body region and the defect evaluation information of the joint region.
[0090] In further devices of the above devices, the determining module is specifically configured to:
[0091] determine a position region of each defect on the to-be-tested pipeline on the two-dimensional map based on the two-dimensional map and preset dielectric characteristic values of different defect types;
[0092] determine a coordinate line segment representing a length and a width of a defect on the position region based on the dielectric characteristic values belonging to the position region, and calculate a numerical value of the coordinate line segment as the length and the width of the defect.
[0093] In further devices of the above devices, the defect evaluation information of the pipe body region includes a cumulative defect area proportion, a cumulative defect length proportion, a length of a single defect with the largest length proportion, a cumulative defect width proportion, and a width of a single defect with the largest width proportion. Correspondingly, in the processing of the processing module in determining the defect evaluation information of the pipe body region of the to-be-tested pipeline according to the length and the width of each defect on the to-be-tested pipeline, the processing module is specifically configured to:
[0094] determine the defect evaluation information of the pipe body region of the to-be-tested pipeline according to the length and the width of each defect on the to-be-tested pipeline by using the following calculation methods:
[0095] a cumulative defect area proportion: wherein A is an area of a single defect, A = l x w, l is the length of the defect, and w is the width of the defect; and i is the number of defects.
[0096] S is an area of a detection surface of the to-be-tested pipeline S = L x W, L is the length of the detection surface, and W is the circumference of the detection surface.
[0097] a cumulative defect length proportion:
[0098] a length of a single defect with the largest length proportion:
[0099] a cumulative defect width proportion:
[0100] a width of a single defect with the largest width proportion:
[0101] In the further device, the defect evaluation information of the joint area includes a proportion of the cumulative circumferential length of the defects at the joint part to the joint circumference and a proportion of the maximum circumferential length of the continuous defect-free part at the joint part to the joint circumference, and the processing module is specifically configured to:
[0102] According to the length and width of each defect on the pipeline to be tested, the defect evaluation information of the joint area of the pipeline to be tested is determined by using the following calculation method:
[0103] The proportion of the cumulative circumferential length of the defects at the joint part to the joint circumference is:
[0104] The proportion of the maximum circumferential length of the continuous defect-free part at the joint part to the joint circumference is: w n The maximum circumferential length of the continuous defect-free part at the joint part.
[0105] In the further device, the detection module is specifically configured to:
[0106] The pipeline to be tested is detected by using the microwave detection technology to obtain a two-dimensional map of the dielectric characteristic value of the pipeline to be tested, and the horizontal coordinate of the two-dimensional map represents the axial length of the pipeline, and the vertical coordinate represents the circumferential length of the pipeline.
[0107] In the further device, the judgment module is specifically configured to:
[0108] According to the defect evaluation information of the pipe body area and the first defect grade evaluation table, the defect grade of the pipe body area is determined.
[0109] According to the defect evaluation information of the joint area and the second defect grade evaluation table, the defect grade of the joint area is determined.
[0110] The non-metal pipeline defect evaluation device provided by the application,
[0111] Figure 3 An example of an electronic device is shown in the schematic diagram of the physical structure of the electronic device, such as Figure 3As shown, the electronic device can include a processor 31, a communications interface 32, a memory 33, and a communications bus 34, wherein the processor 31, the communications interface 32, and the memory 33 communicate with each other through the communications bus 34. The processor 31 can invoke the logical instructions in the memory 33 to execute the non-metal pipeline defect evaluation method, which includes: obtaining a two-dimensional graph of dielectric characteristic values of a pipeline to be tested; determining the length and width of each defect on the pipeline to be tested based on the two-dimensional graph and the preset dielectric characteristic values of different defect types; determining defect evaluation information of a pipe body region of the pipeline to be tested and defect evaluation information of a joint region of the pipeline to be tested according to the length and width of each defect on the pipeline to be tested; and determining the defect grade of the pipeline to be tested according to the defect evaluation information of the pipe body region and the defect evaluation information of the joint region.
[0112] In addition, the logical instructions in the memory 33 described above can be implemented in the form of a software function unit and sold or used as an independent product, and can be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the present application or parts of the present application that essentially contribute to the prior art or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.
[0113] On the other hand, the present application also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium, and the computer program can be executed by a processor to enable a computer to execute the non-metal pipeline defect evaluation method provided by the above-mentioned methods, which includes: obtaining a two-dimensional graph of dielectric characteristic values of a pipeline to be tested; determining the length and width of each defect on the pipeline to be tested based on the two-dimensional graph and the preset dielectric characteristic values of different defect types; determining defect evaluation information of a pipe body region of the pipeline to be tested and defect evaluation information of a joint region of the pipeline to be tested according to the length and width of each defect on the pipeline to be tested; and determining the defect grade of the pipeline to be tested according to the defect evaluation information of the pipe body region and the defect evaluation information of the joint region.
[0114] In yet another aspect, the present application also provides a non-transitory computer readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the non-metal pipeline defect evaluation method provided by the above method, and the method comprises: obtaining a two-dimensional map of dielectric characteristic values of a pipeline to be measured; determining the length and width of each defect on the pipeline to be measured based on the two-dimensional map and the dielectric characteristic values of different defect types preset; determining defect evaluation information of a pipe body region of the pipeline to be measured and defect evaluation information of a joint region of the pipeline to be measured according to the length and width of each defect on the pipeline to be measured; and determining a defect grade of the pipeline to be measured according to the defect evaluation information of the pipe body region and the defect evaluation information of the joint region.
[0115] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. Those skilled in the art can understand and implement without creative labor.
[0116] From the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software and the necessary general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes a number of instructions to make a computer device (which can be a personal computer, server, or network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.
[0117] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A method for evaluating defects in non-metallic pipelines, characterized in that: include: Obtain a two-dimensional map of the dielectric characteristic values of the pipeline to be tested; Determining the length and width of each defect on the pipeline to be tested based on the two-dimensional map and preset dielectric characteristic values of different defect types; Determining defect evaluation information of a pipe body region of the pipe to be tested and defect evaluation information of a joint region of the pipe to be tested based on the length and width of each defect on the pipe to be tested; The defect level of the pipeline to be tested is determined according to the defect evaluation information of the pipe body area and the defect evaluation information of the joint area.
2. The non-metallic pipeline defect evaluation method according to claim 1, characterized in that: Determining the length and width of each defect on the pipeline to be tested based on the two-dimensional map and preset dielectric characteristic values of different defect types includes: Determining the location of each defect on the pipeline to be tested on the two-dimensional map based on the two-dimensional map and preset dielectric characteristic values of different defect types; Based on the dielectric characteristic value belonging to the position area, a coordinate line segment representing the length and width of the defect in the position area is determined, and the value of the coordinate line segment is calculated as the length and width of the defect.
3. The non-metallic pipeline defect evaluation method according to claim 1, characterized in that: The defect evaluation information of the pipe body region includes a cumulative defect area ratio, a cumulative defect length ratio, a length ratio of a single defect with the largest length, a cumulative defect width ratio, and a width ratio of a single defect with the largest width. Accordingly, the defect evaluation information of the pipe body region of the pipe to be tested is determined based on the length and width of each defect on the pipe to be tested, including: Determine defect evaluation information of the pipe body area of the pipe to be tested using the following calculation method based on the length and width of each defect on the pipe to be tested; Cumulative defect area ratio: Where A is the area of a single defect, A = l × w, l is the length of the defect, w is the width of the defect; i is the number of defects; S is the detection surface area of the pipeline to be tested S = L × W, L is the length of the detection surface, W is the circumference of the detection surface; Cumulative defect length ratio: The ratio of the length of the largest single defect: Cumulative defect width ratio: Ratio of single defect width with the largest width:
4. The non-metallic pipeline defect evaluation method according to claim 3, characterized in that: The defect evaluation information of the joint area includes the ratio of the cumulative circumferential length of defects at the joint to the circumference of the joint and the ratio of the maximum circumferential length of consecutive defect-free parts at the joint to the circumference of the joint. Accordingly, the defect evaluation information of the joint area of the pipeline to be tested is determined based on the length and width of each defect on the pipeline to be tested, including: Determine defect evaluation information of the joint area of the pipeline to be tested using the following calculation method based on the length and width of each defect on the pipeline to be tested; The ratio of the cumulative circumferential length of defects in the joint to the circumference of the joint: The ratio of the maximum circumferential length of the continuous defect-free part of the joint to the circumference of the joint: w n It is the maximum circumferential length of the continuous defect-free part of the joint.
5. The non-metallic pipeline defect evaluation method according to claim 1, characterized in that: The step of obtaining a two-dimensional spectrum of dielectric characteristic values of the pipeline to be tested includes: Microwave detection technology is used to detect the pipeline to be tested, and a two-dimensional spectrum of the dielectric characteristic value of the pipeline to be tested is obtained. The horizontal coordinate of the two-dimensional spectrum represents the axial length of the pipeline, and the vertical coordinate represents the circumferential length of the pipeline.
6. The non-metallic pipeline defect evaluation method according to claim 1, characterized in that: The step of determining the defect level of the pipeline to be tested based on the defect evaluation information of the pipe body area and the defect evaluation information of the joint area includes: Determining the defect level of the pipe body region according to the defect evaluation information of the pipe body region and the first defect level evaluation table; The defect level of the joint area is determined according to the defect evaluation information of the joint area and the second defect level evaluation table.
7. A non-metallic pipeline defect evaluation device, characterized in that: include: A detection module, used to obtain a two-dimensional map of the dielectric characteristic values of the pipeline to be tested; a determination module, configured to determine the length and width of each defect on the pipeline to be tested based on the two-dimensional map and preset dielectric characteristic values of different defect types; a processing module, configured to determine defect evaluation information of a pipe body region of the pipe to be tested and defect evaluation information of a joint region of the pipe to be tested based on the length and width of each defect on the pipe to be tested; The judgment module is used to determine the defect level of the pipeline to be tested based on the defect evaluation information of the pipe body area and the defect evaluation information of the joint area.
8. The non-metallic pipeline defect evaluation device according to claim 7, characterized in that: The determining module is specifically configured to: Determining the location of each defect on the pipeline to be tested on the two-dimensional map based on the two-dimensional map and preset dielectric characteristic values of different defect types; Based on the dielectric characteristic value belonging to the position area, a coordinate line segment representing the length and width of the defect in the position area is determined, and the value of the coordinate line segment is calculated as the length and width of the defect.
9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the non-metallic pipeline defect evaluation method according to any one of claims 1 to 6 is implemented.
10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the non-metallic pipeline defect evaluation method according to any one of claims 1 to 6 is implemented.