Method and device for monitoring safety status of transversely deformed pipelines

Abstract

An embodiment of the present invention provides a method and device for monitoring the safety status of a transversely deformed pipeline, the method comprising: establishing a three-dimensional view of the pipeline to be tested according to the contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length, wherein the pipeline to be tested is a pipeline with circumferential welds at both ends; analyzing the three-dimensional view to determine the target deformation area on the central axis of the pipeline to be tested; determining the coordinates of the extreme point and two positioning points in the target deformation area; determining the deformation amount corresponding to each point according to the coordinates of the extreme point and the coordinates of the positioning point, and determining the safety status of the pipeline to be tested according to the deformation amount and the configuration information of the pipeline to be tested. A method and device for monitoring the safety status of a transversely deformed pipeline provided by an embodiment of the present invention obtains the bending strain and membrane strain of the transversely deformed pipeline by measuring the deformation amount, length change and other parameters of each point in the pipeline deformation area, and then evaluates the safety status of the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of oil pipeline safety assessment, and in particular to a method and a device for monitoring the safety status of a transversely deformed pipeline. Background Art

[0002] Ground subsidence, floods, landslides and occupation are typical adverse geological conditions commonly seen in pipeline projects, which may cause lateral deformation of pipelines. Severe deformation may also lead to failure forms such as buckling or fracture of pipelines, posing a serious threat to pipeline safety. At present, the safety assessment of lateral deformation pipelines mainly focuses on establishing mechanical analysis models of pipelines according to different geological conditions, studying the mechanical behavior of pipelines, and deriving analytical calculation methods for pipeline deformation and stress. For example, the ASCE "Guidelines for the Design of Buried Steel Pipelines" recommends using the probability integral method to predict surface deformation and use it as a displacement load condition, considering factors such as nonlinear interaction between pipes and soil and nonlinearity of pipe materials, establishing a finite element model, and analyzing the deformation and stress distribution characteristics of buried pipelines in mining subsidence areas. Some scholars have established a finite element model and analytical calculation method for lateral landslide pipelines, and analyzed the deformation, stress and strain distribution characteristics of pipelines. The simplified conditions in the existing analytical methods limit their scope of application, and the finite element method solution process is complex and time-consuming. Summary of the invention

[0003] In view of the problems existing in the prior art, an embodiment of the present invention provides a method and device for monitoring the safety status of a transversely deformed pipeline.

[0004] In a first aspect, an embodiment of the present invention provides a method for monitoring the safety status of a transversely deformed pipeline, comprising:

[0005] Acquire contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length of the pipeline to be tested, and establish a three-dimensional view of the pipeline to be tested according to the contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length, wherein the pipeline to be tested is a pipeline with girth welds at both ends;

[0006] Analyze the three-dimensional view, obtain the central axis of the pipeline, and determine the target deformation area on the central axis of the pipeline to be measured;

[0007] Determine the coordinates of an extreme point and two positioning points in the target deformation area, wherein the positioning points are located on both sides of the extreme point, and both the extreme point and the positioning points are on the central axis of the pipeline;

[0008] The deformation amount corresponding to each point is determined according to the coordinates of the extreme point and the coordinates of the positioning point, and the safety state of the pipeline to be tested is determined according to the deformation amount and pre-stored configuration information of the pipeline to be tested.

[0009] Optionally, determining the coordinates of the extreme point and two positioning points in the target deformation area includes:

[0010] Processing the three-dimensional view to obtain an axial section, wherein the axial section includes a central axis of the pipeline;

[0011] Placing the original central axis of the pipeline on the axial section and performing a splicing process with the central axis of the pipeline, wherein the original central axis is the central axis of the pipeline before transverse deformation occurs;

[0012] Establish a first coordinate system on the original central axis with the origin on the original central axis and the extreme point on the y-axis;

[0013] A positioning point is determined on the central axis of the pipeline and located on both sides of the extreme point, and the coordinates of the extreme point and the positioning point are determined according to the first coordinate system.

[0014] Optionally, determining the deformation amount corresponding to each point according to the coordinates of the extreme point and the coordinates of the positioning point includes:

[0015] Determine the coordinate value of each point on the y-axis according to the coordinates of the extreme point and the coordinates of the positioning point;

[0016] The deformation corresponding to each point is determined according to the coordinate value of each point on the y-axis.

[0017] Optionally, determining the safety state of the pipeline to be tested according to the deformation amount and pre-stored configuration information of the pipeline to be tested includes:

[0018] Determine the bending strain of the extreme point of the pipeline to be tested in the target deformation area according to the deformation amount, the configuration information of the pipeline to be tested and the first strain formula;

[0019] Determine the film strain of the extreme point of the pipeline to be tested in the target deformation area according to the deformation amount, the configuration information of the pipeline to be tested and the second strain formula;

[0020] determining a first safety value and a second safety value according to the bending strain and the film strain;

[0021] The safety state of the pipeline to be tested is determined according to the first safety value, the second safety value and a preset safety condition.

[0022] Optionally, the first strain formula includes:

[0023]

[0024] ε 1 is the bending strain, D is the outer diameter of the pipe, h a 、h b 、h m are the deformations of the two positioning points and the extreme point respectively; L 1 and L 2The horizontal distances from the two positioning points to the extreme point are 3 times the outer diameter of the pipe;

[0025] The second strain formula includes:

[0026]

[0027] ε 2 is the film strain, L 0 Initial length of pipeline, L 4 The length of the pipe after deformation.

[0028] Optionally, the safety condition includes:

[0029]

[0030] φ εt is the tensile strain resistance factor, which can be taken as 0.7; is the tensile limit strain of the pipe wall or welded parts, taken as 0.75% or 0.5×0.75%;

[0031]

[0032] φ εc is the compression strain resistance factor, which can be taken as 0.8; is the axial or circumferential compressive limit strain;

[0033]

[0034]

[0035] t is the pipe wall thickness, D is the pipe outer diameter, P i is the maximum internal pressure, E s =207GPa, F Y Minimum yield strength;

[0036] Wherein, ε is the first safety value or the second safety value.

[0037] In a second aspect, an embodiment of the present invention provides a device for monitoring the safety status of a transversely deformed pipeline, comprising:

[0038] An establishment module is used to obtain the contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length of the pipeline to be tested, and establish a three-dimensional view of the pipeline to be tested according to the contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length, wherein the pipeline to be tested is a pipeline with girth welds at both ends;

[0039] A screening module is used to analyze the three-dimensional view, obtain the central axis of the pipeline, and determine the target deformation area on the central axis of the pipeline to be tested;

[0040] A determination module, used to determine the coordinates of an extreme point and two positioning points in a target deformation area, wherein the positioning points are located on both sides of the extreme point, and both the extreme point and the positioning points are on the central axis of the pipeline;

[0041] The monitoring module is used to determine the deformation amount corresponding to each point according to the coordinates of the extreme point and the coordinates of the positioning point, and determine the safety state of the pipeline to be tested according to the deformation amount and pre-stored configuration information of the pipeline to be tested.

[0042] Optionally, the determining module is specifically used to:

[0043] Processing the three-dimensional view to obtain an axial section, wherein the axial section includes a central axis of the pipeline;

[0044] Placing the original central axis of the pipeline on the axial section and performing a splicing process with the central axis of the pipeline, wherein the original central axis is the central axis of the pipeline before transverse deformation occurs;

[0045] Establish a first coordinate system on the original central axis with the origin on the original central axis and the extreme point on the y-axis;

[0046] A positioning point is determined on the central axis of the pipeline and located on both sides of the extreme point, and the coordinates of the extreme point and the positioning point are determined according to the first coordinate system.

[0047] In a third aspect, an embodiment of the present invention provides 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 steps of the above-mentioned method for monitoring the safety status of a transversely deformed pipeline are implemented.

[0048] In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-mentioned method for monitoring the safety status of a transversely deformed pipeline.

[0049] The embodiments of the present invention provide a method and device for monitoring the safety status of a transversely deformed pipeline. By measuring parameters such as the deformation amount and length change amount of each point in the deformation area of ​​the pipeline, the bending strain and membrane strain of the transversely deformed pipeline are obtained, and the safety status of the pipeline is further evaluated. The method and device are simple and fast, highly operable, and have a wide range of applications, and are convenient for engineering applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 This is a flow chart of an embodiment of a method for monitoring the safety status of a transversely deformed pipeline according to the present invention;

[0052] Figure 2 It is a schematic diagram showing selected points on the coordinate system on the axial cross section of the present invention;

[0053] Figure 3 This is a structural diagram of an embodiment of a device for monitoring the safety status of a transversely deformed pipeline according to the present invention;

[0054] Figure 4 It is a structural diagram of an electronic device embodiment of the present invention. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] Figure 1 A method for monitoring the safety status of a transversely deformed pipeline provided by an embodiment of the present invention is shown, comprising:

[0057] S11, obtaining contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length of the pipeline to be tested, and establishing a three-dimensional view of the pipeline to be tested according to the contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length, wherein the pipeline to be tested is a pipeline having girth welds at both ends;

[0058] S12, analyzing the three-dimensional view, obtaining the central axis of the pipeline, and determining the target deformation area on the central axis of the pipeline to be measured;

[0059] S13, determining the coordinates of an extreme point and two positioning points in the target deformation area, wherein the positioning points are located on both sides of the extreme point, and both the extreme point and the positioning points are on the central axis of the pipeline;

[0060] S14, determining the deformation amount corresponding to each point according to the coordinates of the extreme point and the coordinates of the positioning point, and determining the safety state of the pipeline to be tested according to the deformation amount and pre-stored configuration information of the pipeline to be tested.

[0061] Regarding step S11, it should be noted that, in the embodiment of the present invention, ground subsidence, flooding, landslides and occupation are typical adverse geological conditions commonly seen in pipeline projects, which may cause lateral deformation of the pipeline. Severe deformation may also lead to failure forms such as buckling or fracture of the pipeline, posing a serious threat to pipeline safety.

[0062] In order to ensure the safe use of pipelines, it is necessary to evaluate the safety of pipelines. In the process of pipeline safety evaluation, the geometric structure data of the lateral deformation of the pipeline is required. For this purpose, internal detection and external detection measurements can be used, such as a deflection measuring instrument to scan the inner contour or outer contour of the pipeline to be tested to obtain inner contour scanning data or outer contour scanning data. Here, since the thickness of the pipeline can be obtained, either inner or outer contour scanning data can be obtained.

[0063] Then, the inner contour scanning data or the outer contour scanning data, combined with the pipe wall thickness, the pipe outer diameter and the pipe length under the current condition of the pipe, are input into the modeling system to establish a three-dimensional view of the pipe to be tested.

[0064] In the whole pipeline project, multiple sections of pipeline need to be welded together. Here, data can be collected for each section of pipeline one by one and a three-dimensional view can be established. Therefore, the pipeline to be tested each time is a pipeline with circumferential welds at both ends. This method can realize segmented monitoring and data processing of pipelines, reduce the amount of data processed each time, and improve analysis speed and accuracy.

[0065] Regarding step S12, it should be noted that, in the embodiment of the present invention, since the three-dimensional view is a complete embodiment of the pipeline to be tested, if there is a transverse deformation part on the pipeline to be tested, it will also appear on the three-dimensional view. To this end, the obtained three-dimensional view is analyzed, the central axis of the pipeline is obtained, all the transverse deformation areas are found from the central axis, and then the target deformation area required on the pipeline to be tested is determined from these transverse deformation areas, and the target deformation area is the area with the largest transverse deformation value.

[0066] Regarding step S13, it should be noted that, in the embodiment of the present invention, it is necessary to take the target deformation area as a research object to evaluate the safety status of the pipeline.

[0067] To this end, a coordinate system is established on the three-dimensional view to determine the coordinates of the extreme point and two positioning points in the target deformation area.

[0068] In a further embodiment of the above embodiment method, the determination of the coordinates of the extreme point and the coordinates of the positioning point is mainly explained as follows:

[0069] S131, processing the three-dimensional view to obtain an axial section, where the axial section includes the central axis of the pipeline;

[0070] S132, placing the original central axis of the pipeline on the axial section and performing a splicing process with the central axis of the pipeline, wherein the original central axis is the central axis of the pipeline before lateral deformation occurs;

[0071] S133, establishing a first coordinate system on the original central axis with the origin of the coordinates located on the original central axis and the extreme point located on the y-axis;

[0072] S134, determining a positioning point on the central axis of the pipeline and located on both sides of the extreme point respectively, and determining the coordinates of the extreme point and the positioning point according to the first coordinate system.

[0073] Regarding steps S131 to S134, it should be noted that Figure 2 As shown in the figure, the curve is the central axis of the pipeline after deformation. In order to obtain the coordinates of each point on the central axis, the original central axis is used as a reference. To this end, the original central axis of the pipeline is placed on the axial section and spliced ​​with the central axis of the pipeline. The original central axis is the central axis of the pipeline before lateral deformation. Regarding the splicing of the original central axis and the central axis of the pipeline, the two central axes coincide in the horizontal section and do not coincide in the deformation section. The original central axis is a reference line for the central axis of the pipeline, which is convenient for determining the coordinates of each point on the deformation area of ​​the central axis of the pipeline.

[0074] At this time, in order to establish a coordinate system, we must first use the extreme point of the target deformation area as the reference point to obtain an axial section. Then establish a first coordinate system on the axial section with the origin on the original central axis and the extreme point m on the y-axis. Then select a positioning point (a and b) on the central axis of the pipeline on the axial section and on both sides of the extreme point. The distances (L1 and L2) between these two positioning points and the y-axis are approximately two or three times the outer diameter of the pipeline, and the sizes of the two points are the same or different. After the extreme point and the positioning points on both sides are determined, the coordinates of each point can be determined according to the first coordinate system. Among them, Figure 2 In the figure, the specific coordinate values ​​of m, a and b are not marked.

[0075] Regarding step S14, it should be noted that, in the embodiment of the present invention, since the deformation amount of the deformation area can reflect the safety of the pipeline, it is necessary to determine the deformation amount corresponding to each point based on the coordinates of the extreme point and the coordinates of the positioning point.

[0076] Determine the coordinate value of each point on the y-axis according to the coordinates of the extreme point and the coordinates of the positioning point;

[0077] Determine the deformation corresponding to each point according to the coordinate value of each point on the y-axis, such as Figure 2 The deformation corresponding to points a and b in is h a and h b , the deformation of point m is also determined by the coordinate value of point m on the y-axis.

[0078] Then, the safety state of the pipeline to be tested is determined according to the deformation amount and the pre-stored configuration information of the pipeline to be tested. Here, the configuration information of the pipeline to be tested can be obtained according to the data on the configuration table, or can be obtained according to certain data through a known calculation formula.

[0079] In a further embodiment of the above embodiment method, the process of determining the safety state of the pipeline to be tested according to the deformation amount and the pre-stored configuration information of the pipeline to be tested is mainly explained as follows:

[0080] Determine the bending strain of the extreme point of the pipeline to be tested in the target deformation area according to the deformation amount, the configuration information of the pipeline to be tested and the first strain formula;

[0081] Determine the film strain of the extreme point of the pipeline to be tested in the target deformation area according to the deformation amount, the configuration information of the pipeline to be tested and the second strain formula;

[0082] determining a first safety value and a second safety value according to the bending strain and the film strain;

[0083] The safety state of the pipeline to be tested is determined according to the first safety value, the second safety value and a preset safety condition.

[0084] The first strain formula includes:

[0085]

[0086] ε 1 is the bending strain, D is the outer diameter of the pipe, h a 、h b 、h m are the deformations of the two positioning points and the extreme point respectively; L 1 and L 2 The horizontal distances from the two positioning points to the extreme point are 3 times the outer diameter of the pipe;

[0087] The second strain formula includes:

[0088]

[0089] ε 2 is the film strain, L 0 Initial length of pipe, L 4 The length of the pipe after deformation.

[0090] The first safety condition includes:

[0091]

[0092] φ εt is the tensile strain resistance factor, which can be taken as 0.7; is the tensile limit strain of the pipe wall or welded parts, taken as 0.75% or 0.5×0.75%;

[0093] The second safety condition includes:

[0094]

[0095] φ εc is the compression strain resistance factor, which can be taken as 0.8; is the axial or circumferential compressive limit strain;

[0096]

[0097]

[0098] t is the pipe wall thickness, D is the pipe outer diameter, P i is the maximum internal pressure, E s =207GPa, F Y Minimum yield strength;

[0099] Wherein, ε is the first safety value or the second safety value.

[0100] In this embodiment, ε=ε 2 -ε 1 , or, ε=ε 2 +ε 1 . They are called the first safety value and the second safety value respectively.

[0101] The first safety value and the second safety value are made to match the above safety conditions. When ε is a positive value, the above first safety condition is used for evaluation. When ε is a negative value, the above second safety condition is used for evaluation. If the corresponding safety conditions are met at the same time, it means that the safety status of the pipeline to be tested is good. Otherwise, it means that the safety status of the pipeline to be tested is not good.

[0102] The following is an explanation of the above method for determining the safety of the pipeline with a specific example:

[0103] After the above steps and the acquisition of configuration information, we can get t = 6.3 mm; D = 355.6 mm; P i =2.5MPa; F y =290MPa; L 0 =10919mm; L 4=10921.6mm;h a =-1789.6mm;h b =-1788mm;h m =-1790.3mm, L 1 =L 2 =1000mm.

[0104] Obtain the bending strain of the transversely deformed pipe.

[0105]

[0106] Obtain the membrane strain of the transversely deformed pipe.

[0107]

[0108] After the pipe is deformed, the inner side of point m is compressed and the outer side is stretched. Calculate ε=ε 2 +ε 1 and ε=ε 2 -ε 1 When the result is positive, it is evaluated according to formula (1); when the result is negative, it is evaluated according to formula (2).

[0109]

[0110] In the formula, φ εt is the tensile strain resistance factor, which can be taken as 0.7; The tensile limit strain of the pipe wall or welded parts is 0.75%. In order to prevent possible pipe fracture or plastic failure caused by welding defects, the industry uses a longitudinal tensile strain limit of 0.5%, that is, 0.5×0.75%.

[0111]

[0112] In the formula, φ εc is the compression strain resistance factor, which can be taken as 0.8; is the axial or circumferential compressive limit strain, calculated according to the following formula

[0113]

[0114]

[0115] From the obtained data, ε can be calculated 2 +ε 1 =7.714E-4,ε 2 -ε 1 =-2.954E-4.

[0116] When 7.714E-4 is a positive value, according to formula (1), 7.714E-4<3.75E-3, so the evaluation result outside point m is safe.

[0117] When -2.954E-4 is a negative value, evaluate according to formula (2):

[0118]

[0119]

[0120] -2.954E-4<5.37E-3, so the evaluation result inside point m is safe.

[0121] In summary, the strain assessment result of point m of the transversely deformed pipeline is safe.

[0122] The method for monitoring the safety status of a transversely deformed pipeline provided in an embodiment of the present invention obtains the bending strain and membrane strain of the transversely deformed pipeline by measuring parameters such as the deformation amount and length change amount of each point in the pipeline deformation area, and then evaluates the safety status of the pipeline. The method is simple and fast, highly operable, and has a wide range of applications, and is convenient for engineering applications.

[0123] Figure 3 FIG. 1 shows a schematic diagram of a pipeline transverse deformation safety state monitoring device provided by an embodiment of the present invention, referring to FIG. Figure 3 The device comprises an establishing module 21, a screening module 22, a determining module 23 and a monitoring module 24, wherein:

[0124] Establishing module 21, used for obtaining the contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length of the pipeline to be tested, and establishing a three-dimensional view of the pipeline to be tested according to the contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length, wherein the pipeline to be tested is a pipeline with girth welds at both ends;

[0125] A screening module 22 is used to analyze the three-dimensional view, obtain the central axis of the pipeline, and determine the target deformation area on the central axis of the pipeline to be tested;

[0126] A determination module 23 is used to determine the coordinates of an extreme point and two positioning points in a target deformation region, wherein the positioning points are located on both sides of the extreme point, and both the extreme point and the positioning points are on the central axis of the pipeline;

[0127] The monitoring module 24 is used to determine the deformation amount corresponding to each point according to the coordinates of the extreme point and the coordinates of the positioning point, and determine the safety state of the pipeline to be tested according to the deformation amount and pre-stored configuration information of the pipeline to be tested.

[0128] In a further embodiment of the above embodiment device, the determining module is specifically used for:

[0129] Processing the three-dimensional view to obtain an axial section, wherein the axial section includes a central axis of the pipeline;

[0130] Placing the original central axis of the pipeline on the axial section and performing a splicing process with the central axis of the pipeline, wherein the original central axis is the central axis of the pipeline before transverse deformation occurs;

[0131] Establish a first coordinate system on the original central axis with the origin on the original central axis and the extreme point on the y-axis;

[0132] A positioning point is determined on the central axis of the pipeline and located on both sides of the extreme point, and the coordinates of the extreme point and the positioning point are determined according to the first coordinate system.

[0133] In a further embodiment of the above embodiment device, the determining module is specifically used for:

[0134] Determine the coordinate value of each point on the y-axis according to the coordinates of the extreme point and the coordinates of the positioning point;

[0135] The deformation corresponding to each point is determined according to the coordinate value of each point on the y-axis.

[0136] In a further embodiment of the above embodiment device, the monitoring module is specifically used for:

[0137] Determine the bending strain of the extreme point of the pipeline to be tested in the target deformation area according to the deformation amount, the configuration information of the pipeline to be tested and the first strain formula;

[0138] Determine the film strain of the extreme point of the pipeline to be tested in the target deformation area according to the deformation amount, the configuration information of the pipeline to be tested and the second strain formula;

[0139] determining a first safety value and a second safety value according to the bending strain and the film strain;

[0140] The safety state of the pipeline to be tested is determined according to the first safety value, the second safety value and a preset safety condition.

[0141] In a further embodiment of the above embodiment device, the first strain formula includes:

[0142]

[0143] ε 1 is the bending strain, D is the outer diameter of the pipe, h a 、h b 、h m are the deformations of the two positioning points and the extreme point respectively; L 1 and L 2The vertical distances between the two positioning points and the extreme point are 3 times the outer diameter of the pipe;

[0144] The second strain formula includes:

[0145]

[0146] ε 2 is the film strain, L 0 Initial length of pipe, L 4 The length of the pipe after deformation.

[0147] In a further embodiment of the above embodiment device, the safety condition includes:

[0148]

[0149] φ ε1 is the tensile strain resistance factor, which can be taken as 0.7; is the tensile limit strain of the pipe wall or welded parts, taken as 0.75% or 0.5×0.75%;

[0150]

[0151] φ εc is the compression strain resistance factor, which can be taken as 0.8; is the axial or circumferential compressive limit strain;

[0152]

[0153]

[0154] t is the pipe wall thickness, D is the pipe outer diameter, P i is the maximum internal pressure, E s =207GPa, F Y Minimum yield strength;

[0155] Wherein, ε is the first safety value or the second safety value.

[0156] Since the principle of the device described in the embodiment of the present invention is the same as that of the method described in the above embodiment, a more detailed explanation will not be repeated here.

[0157] It should be noted that, in the embodiment of the present invention, the relevant functional modules can be implemented by a hardware processor.

[0158] The device for monitoring the safety status of a transversely deformed pipeline provided in an embodiment of the present invention obtains the bending strain and membrane strain of the transversely deformed pipeline by measuring parameters such as the deformation amount and length change amount of each point in the deformation area of ​​the pipeline, and then evaluates the safety status of the pipeline. The device is simple and fast, has strong operability, and has a wide range of applications, and is convenient for engineering applications.

[0159] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4 As shown, the electronic device may include: a processor 31, a communication interface 32, a memory 33 and a communication bus 34, wherein the processor 31, the communication interface 32 and the memory 33 communicate with each other through the communication bus 34. The processor 31 may call the logic instructions in the memory 33 to execute the following method: obtain the contour scanning data, the pipe wall thickness, the pipe outer diameter and the pipe length of the pipe to be tested, and establish a three-dimensional view of the pipe to be tested according to the contour scanning data, the pipe wall thickness, the pipe outer diameter and the pipe length, wherein the pipe to be tested is a pipe with circumferential welds at both ends; analyze the three-dimensional view, obtain the central axis of the pipe, and determine the target deformation area on the central axis of the pipe to be tested; determine the coordinates of the extreme point and two positioning points in the target deformation area, wherein the positioning points are located on both sides of the extreme point, and the extreme point and the positioning points are both on the central axis of the pipe; determine the deformation amount corresponding to each point according to the coordinates of the extreme point and the coordinates of the positioning point, and determine the safety state of the pipe to be tested according to the deformation amount and the pre-stored configuration information of the pipe to be tested.

[0160] In addition, the logic instructions in the above-mentioned memory 33 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0161] An embodiment of the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the method provided by the above embodiments is implemented, for example, including: obtaining contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length of the pipeline to be tested, and establishing a three-dimensional view of the pipeline to be tested according to the contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length, wherein the pipeline to be tested is a pipeline with circumferential welds at both ends; analyzing the three-dimensional view, obtaining the central axis of the pipeline, and determining the target deformation area on the central axis of the pipeline to be tested; determining the coordinates of an extreme point and two positioning points in the target deformation area, wherein the positioning points are located on both sides of the extreme point, and both the extreme point and the positioning points are on the central axis of the pipeline; determining the deformation amount corresponding to each point according to the coordinates of the extreme point and the coordinates of the positioning point, and determining the safety status of the pipeline to be tested according to the deformation amount and the pre-stored configuration information of the pipeline to be tested.

[0162] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0163] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for monitoring the safety status of a transversely deformed pipeline, characterized in that: include: Acquire contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length of the pipeline to be tested, and establish a three-dimensional view of the pipeline to be tested according to the contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length, wherein the pipeline to be tested is a pipeline with girth welds at both ends; Analyze the three-dimensional view, obtain the central axis of the pipeline, and determine the target deformation area on the central axis of the pipeline to be measured; Determine the coordinates of an extreme point and two positioning points in the target deformation area, wherein the positioning points are located on both sides of the extreme point, and both the extreme point and the positioning points are on the central axis of the pipeline; Determine the deformation amount corresponding to each point according to the coordinates of the extreme point and the coordinates of the positioning point, and determine the safety state of the pipeline to be tested according to the deformation amount and pre-stored configuration information of the pipeline to be tested; The step of determining the safety state of the pipeline to be tested according to the deformation amount and pre-stored configuration information of the pipeline to be tested includes: Determine the bending strain of the extreme point of the pipeline to be tested in the target deformation area according to the deformation amount, the configuration information of the pipeline to be tested and the first strain formula; Determine the film strain of the extreme point of the pipeline to be tested in the target deformation area according to the deformation amount, the configuration information of the pipeline to be tested and the second strain formula; determining a first safety value and a second safety value according to the bending strain and the film strain; Determine the safety state of the pipeline to be tested according to the first safety value, the second safety value and a preset safety condition; The first strain formula includes: ； is the bending strain, D is the outer diameter of the pipe, are the deformations of the two positioning points and the extreme point respectively; and The horizontal distances from the two positioning points to the extreme point are 3 times the outer diameter of the pipe; The second strain formula includes: ； is the film strain, is the initial length of the pipeline, is the length of the pipe after deformation; The safety conditions include: ； is the tensile strain resistance factor; is the tensile limit strain of the pipe wall or welded parts; ； is the compressive strain resistance factor; is the axial or circumferential compressive limit strain; ； t is the pipe wall thickness, D is the pipe outer diameter, is the maximum internal pressure, =207GPa, Minimum yield strength; in, is the first safety value or the second safety value.

2. The method for monitoring the safety status of a transversely deformed pipeline according to claim 1, characterized in that: Determining the coordinates of the extreme point and two positioning points in the target deformation area includes: Processing the three-dimensional view to obtain an axial section, wherein the axial section includes a central axis of the pipeline; Placing the original central axis of the pipeline on the axial section and performing a splicing process with the central axis of the pipeline, wherein the original central axis is the central axis of the pipeline before transverse deformation occurs; Establish a first coordinate system on the original central axis with the origin on the original central axis and the extreme point on the y-axis; A positioning point is determined on the central axis of the pipeline and located on both sides of the extreme point, and the coordinates of the extreme point and the positioning point are determined according to the first coordinate system.

3. The method for monitoring the safety status of a transversely deformed pipeline according to claim 2, characterized in that: The step of determining the deformation amount corresponding to each point according to the coordinates of the extreme point and the coordinates of the positioning point includes: Determine the coordinate value of each point on the y-axis according to the coordinates of the extreme point and the coordinates of the positioning point; The deformation corresponding to each point is determined according to the coordinate value of each point on the y-axis.

4. A device for monitoring the safety status of a transversely deformed pipeline, characterized in that: include: An establishment module is used to obtain the contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length of the pipeline to be tested, and establish a three-dimensional view of the pipeline to be tested according to the contour scanning data, pipeline wall thickness, pipeline outer diameter and pipeline length, wherein the pipeline to be tested is a pipeline with girth welds at both ends; A screening module is used to analyze the three-dimensional view, obtain the central axis of the pipeline, and determine the target deformation area on the central axis of the pipeline to be tested; A determination module, used to determine the coordinates of an extreme point and two positioning points in a target deformation area, wherein the positioning points are located on both sides of the extreme point, and both the extreme point and the positioning points are on the central axis of the pipeline; A monitoring module, used to determine the deformation amount corresponding to each point according to the coordinates of the extreme point and the coordinates of the positioning point, and determine the safety state of the pipeline to be tested according to the deformation amount and pre-stored configuration information of the pipeline to be tested; The step of determining the safety state of the pipeline to be tested according to the deformation amount and pre-stored configuration information of the pipeline to be tested includes: Determine the bending strain of the extreme point of the pipeline to be tested in the target deformation area according to the deformation amount, the configuration information of the pipeline to be tested and the first strain formula; Determine the film strain of the extreme point of the pipeline to be tested in the target deformation area according to the deformation amount, the configuration information of the pipeline to be tested and the second strain formula; determining a first safety value and a second safety value according to the bending strain and the film strain; Determine the safety state of the pipeline to be tested according to the first safety value, the second safety value and a preset safety condition; The first strain formula includes: ； is the bending strain, D is the outer diameter of the pipe, are the deformations of the two positioning points and the extreme point respectively; and The horizontal distances from the two positioning points to the extreme point are 3 times the outer diameter of the pipe; The second strain formula includes: ； is the film strain, is the initial length of the pipeline, is the length of the pipe after deformation; The safety conditions include: ； is the tensile strain resistance factor; is the tensile limit strain of the pipe wall or welded parts; ； is the compressive strain resistance factor; is the axial or circumferential compressive limit strain; ； t is the pipe wall thickness, D is the pipe outer diameter, is the maximum internal pressure, =207GPa, Minimum yield strength; in, is the first safety value or the second safety value.

5. The device for monitoring the safety status of a transversely deformed pipeline according to claim 4, characterized in that: The determination module is specifically used for: Processing the three-dimensional view to obtain an axial section, wherein the axial section includes a central axis of the pipeline; Placing the original central axis of the pipeline on the axial section and performing a splicing process with the central axis of the pipeline, wherein the original central axis is the central axis of the pipeline before transverse deformation occurs; Establish a first coordinate system on the original central axis with the origin on the original central axis and the extreme point on the y-axis; A positioning point is determined on the central axis of the pipeline and located on both sides of the extreme point, and the coordinates of the extreme point and the positioning point are determined according to the first coordinate system.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the method for monitoring the safety status of a transversely deformed pipeline as claimed in any one of claims 1 to 3 are implemented.

7. 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 steps of the method for monitoring the safety status of a transversely deformed pipeline as claimed in any one of claims 1 to 3 are implemented.

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