Pipeline scratch defect processing and manufacturing method and system

Abstract

The invention discloses a pipeline scratch defect processing and manufacturing method and system, relates to the technical field of pipelines, and aims to solve the problem that the forming process of pipeline scratches and the structure reduction effect are poor. The pipeline scratch defect processing and manufacturing method comprises the following steps: acquiring an arc plate sample, wherein the arc plate sample is a part of a pipeline; a pressure head is controlled to be pressed into the arc plate sample in the first direction; and controlling the pressure head and the arc plate sample to move relatively along a second direction, wherein the second direction is perpendicular to the first direction.

Description

Technical Field

[0001] The present application relates to the field of pipeline technology, and in particular to a pipeline scratch defect processing and manufacturing method and system. Background Art

[0002] The processing and manufacture of pipeline scratch defects can provide a scientific basis for the cracking mechanism of scratch defects and the prevention and maintenance of pipeline accidents, and plays an important role in ensuring the safe operation of pipelines.

[0003] In the related technologies, scratch defects of different specifications are processed by grinding, laser etching or electric spark, etc. However, the related technologies have poor effects on the forming process and structural restoration of pipeline scratches, which is not conducive to subsequent experimental research. Summary of the invention

[0004] The purpose of this application is to provide a pipeline scratch defect processing and manufacturing method and system, aiming to solve the problem of poor forming process and structural restoration effect of pipeline scratches.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] The present application provides a method for processing and manufacturing pipeline scratch defects, comprising obtaining an arc plate sample, the arc plate sample being a portion of the pipeline; controlling a pressure head to be pressed into the arc plate sample along a first direction; and controlling the pressure head and the arc plate sample to move relative to each other along a second direction, the second direction being perpendicular to the first direction.

[0007] The pipeline scratch defect processing and manufacturing method provided in the embodiment of the present application simulates the extrusion process between the machine or foreign matter such as rock and the pipeline wall by extending the pressure head into the arc plate sample along the first direction, and simulates the relative sliding process between the foreign matter and the pipeline wall by the relative movement of the arc plate sample and the pressure head along the second direction. In this way, the present application can fully simulate the forming process of the pipeline scratch defect and form a pipeline scratch defect with a structure similar to that in the actual scene, thereby providing favorable conditions for the experimental study of the pipeline fracture mechanism.

[0008] In some embodiments of the present application, controlling the pressure head to press into the arc plate sample along a first direction includes: controlling the pressure head to contact the arc plate sample along the first direction; and controlling the pressure head to feed a first preset dimension along the first direction.

[0009] In some embodiments of the present application, after the pressure head is controlled to contact the arc plate sample along a first direction and before the pressure head is controlled to feed a first preset size along the first direction, the pipeline scratch defect processing method also includes: making the position where the pressure head contacts the arc plate sample as a reference position.

[0010] In some embodiments of the present application, controlling the pressure head and the arc plate sample to move relative to each other along the second direction includes: controlling the arc plate sample to feed a second preset dimension along the second direction.

[0011] In some embodiments of the present application, controlling the arc plate sample to feed the second preset size along the second direction further includes: controlling the force between the pressure head and the arc plate sample to remain unchanged, and while the arc plate sample is fed along the second direction by the second preset size, controlling the pressure head to feed along the third direction by the third preset size, the feeding direction of the arc plate sample is perpendicular to the axial direction of the arc plate sample. The third direction is perpendicular to the first direction and the second direction.

[0012] In some embodiments of the present application, controlling the arc plate sample to feed a second preset size along the second direction includes: controlling the position of the pressure head to remain unchanged, feeding the arc plate sample along the second direction to feed the second preset size, and the feeding direction of the arc plate sample is parallel to the axial direction of the arc plate sample.

[0013] In some embodiments of the present application, controlling the arc plate sample to feed a second preset size along a second direction also includes controlling the force between the pressure head and the arc plate sample to remain unchanged, and the arc plate sample is fed along the second direction by the second preset size, and the feeding direction of the arc plate sample is perpendicular to the axial direction of the arc plate sample.

[0014] In some embodiments of the present application, after controlling the pressure head to press into the arc plate sample along a first direction, and before controlling the pressure head and the arc plate sample to move relative to each other along a second direction, the pipeline scratch defect processing method further includes: controlling the pressure head to maintain a preset pressure for a preset time.

[0015] In some embodiments of the present application, obtaining the arc plate sample includes: determining a weld-free area of ​​the pipeline; and performing cutting in the weld-free area to obtain the arc plate sample.

[0016] In some embodiments of the present application, after controlling the arc plate sample to move along the second direction, the pipeline scratch defect processing and manufacturing method also includes: detecting whether the first preset size and the second preset size on the arc plate sample meet the preset sizes; if so, connecting the arc plate sample to the weld-free area.

[0017] The present application also provides a pipeline scratch defect processing and manufacturing system for executing the above method, and the pipeline scratch defect processing and manufacturing system includes a stage, a pressure head and a driving device. The stage is used to carry the arc plate sample; the pressure head is arranged on the side of the arc plate sample away from the stage; and the stage and the pressure head are driven to move relative to each other along a second direction, and the second direction is perpendicular to the first direction.

[0018] In some embodiments of the present application, the driving device can also drive the pressure head to move along a third direction, wherein the third direction is perpendicular to the first direction and the second direction.

[0019] In some embodiments of the present application, the loading platform has a carrying surface, and the carrying surface is convex toward a side close to the pressure head, or the carrying surface is concave toward a side away from the pressure head.

[0020] In some embodiments of the present application, a detection device and a control device are also included. The detection device can detect the pressure and displacement of the pressure head; the control device is electrically connected to the detection device and the driving device respectively, and the control device receives the detection signal of the detection device and sends a control signal to the driving device.

[0021] In some embodiments of the present application, a fixing device is further included. The driving device includes a first actuator, a second actuator, and a third actuator disposed on the fixing device. The output shaft of the first actuator is connected to the pressure head and can reciprocate relative to the fixing device in a first direction. The output shaft of the second actuator can abut against the stage and can reciprocate relative to the fixing device in a second direction. The third actuator is used to drive the pressure head to reciprocate relative to the fixing device in a third direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the structure of a pipeline scratch defect processing and manufacturing system provided in an embodiment of the present application;

[0024] Figure 2 One of the structural schematic diagrams of the stage provided in the embodiment of the present application;

[0025] Figure 3 The second structural schematic diagram of the stage provided in the embodiment of the present application;

[0026] Figure 4 One of the structural schematic diagrams of the pressure head provided in the embodiment of the present application;

[0027] Figure 5 The second structural schematic diagram of the pressure head provided in the embodiment of the present application;

[0028] Figure 6 A flow chart of a pipeline scratch defect processing method provided in an embodiment of the present application;

[0029] Figure 7 A schematic diagram of the structure of a spiral seam pipe provided in an embodiment of the present application;

[0030] Figure 8 A schematic diagram of the structure of a wide plate sample provided in an embodiment of the present application;

[0031] Fig. 9A schematic diagram of a flow chart of a method for obtaining arc plate samples provided in an embodiment of the present application;

[0032] Fig.10 A schematic diagram of the control flow of the pressure head provided in an embodiment of the present application;

[0033] Fig.11 A schematic diagram of the control flow of the arc plate sample provided in the embodiment of the present application;

[0034] Fig.12 A schematic diagram of the flow of the displacement loading mode provided in the embodiment of the present application;

[0035] Fig.13 A schematic diagram of a flow chart of a force loading mode provided in an embodiment of the present application;

[0036] Fig.14 Another schematic flow chart of the force loading mode provided in an embodiment of the present application.

[0037] Reference numerals:

[0038] 100. Pipeline scratch defect processing and manufacturing system;

[0039] 10. stage; 11. convex stage; 12. concave stage; 13. carrying surface;

[0040] 20. Indenter; 21. Conical tool; 22. Pyramidal tool;

[0041] 30. Driving device; 31. First actuator; 32. Second actuator; 33. Hydraulic cylinder; 34. Oil source pump station;

[0042] 40. Detection device; 41. Displacement sensor; 42. Force sensor;

[0043] 50. Control device; 51. Computer; 52. Display screen; 60. Fixing device; 61. First guide rail; 62. Second guide rail; 70. Data acquisition instrument;

[0044] 200, pipeline; 201, wide plate sample; 202, curved plate sample;

[0045] F1, first direction; F2, second direction. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] The processing and production of pipeline scratch defects can provide a scientific basis for the cracking mechanism of scratch defects and the prevention and maintenance of pipeline accidents, which plays an important role in ensuring the safe operation of pipelines. In related technologies, scratch defects of different specifications are processed by grinding, laser etching or electric spark. However, the related technologies have poor effects on the forming process and structural restoration of pipeline scratches, which is not conducive to subsequent experimental research.

[0048] Based on this, the present application provides a pipeline scratch defect processing and manufacturing method and system, which can better restore the pipeline scratch forming process and form pipeline scratch defects with structures similar to those in actual scenarios, thereby providing favorable conditions for experimental research on pipeline cracking mechanisms.

[0049] The basic structure of the pipeline scratch defect processing and manufacturing system of the present application is first described below. Figure 1 This is a schematic diagram of the structure of the pipeline scratch defect processing and manufacturing system provided in the embodiment of the present application, see Figure 1 The pipeline scratch defect processing and manufacturing system 100 provided in the present application includes a stage 10, a pressing head 20 and a driving device 30. The stage 10 is used to carry the arc plate sample 202, and the pressing head 20 is arranged on the side of the arc plate sample 202 away from the stage 10, that is, the pressing head 20 is arranged above the arc plate sample 202. The driving device 30 can drive the pressing head 20 to move toward the arc plate sample 202 along the first direction F1, and drive the stage 10 and the pressing head 20 to move relative to each other along the second direction F2, and the second direction F2 is perpendicular to the first direction F1.

[0050] It should be noted that the driving device 30 drives the stage 10 and the pressing head 20 to move relative to each other along the second direction F2. The position of the pressing head 20 may remain unchanged, and the driving device 30 drives the stage 10 to move along the second direction F2; or the position of the stage 10 may remain unchanged, and the driving device 30 drives the pressing head 20 to move along the second direction F2. As long as the stage 10 and the pressing head 20 can be relatively displaced along the second direction F2, the following description will be made by taking the driving device 30 driving the stage 10 to move along the second direction F2 as an example.

[0051] It is understandable that the stage 10 can provide stable support for the arc plate sample 202 when the driving device 30 drives the pressure head 20 to press into the arc plate sample 202 along the first direction F1, thereby ensuring the stability of the scratch defect during the deep processing. After the deep processing of the scratch defect is completed, the driving device 30 can drive the stage 10 to move along the second direction F2, driving the arc plate sample 202 placed on the stage 10 to move relative to the pressure head 20, thereby completing the length processing of the scratch defect.

[0052] Continue reading Figure 1In some embodiments of the present application, the driving device 30 can also drive the pressure head 20 to move along the third direction F3. The third direction F3 is perpendicular to the first direction F1 and the second direction F2. In this way, when the driving device 30 drives the pressure head 20 to move along the first direction F1 and the third direction F3 at the same time, and drives the stage 10 to move along the second direction F2, it is possible to process scratches of arbitrary tracks and uniform depth on the arc plate sample 202, thereby meeting the diverse needs of subsequent experiments. The specific processing steps will be further described later.

[0053] Figure 2 This is one of the structural schematic diagrams of the stage provided in the embodiment of the present application, Figure 3 The second structural diagram of the stage provided in the embodiment of the present application is shown in conjunction with Figure 1 , Figure 2 and Figure 3 In some embodiments of the present application, the stage 10 has a carrying surface 13 , and the carrying surface 13 is convex toward a side close to the pressure head 20 , or the carrying surface 13 is concave toward a side away from the pressure head 20 .

[0054] That is, the stage 10 of the present application can be divided into a convex stage 11 and a concave stage 12. Thus, when a scratch defect needs to be processed on the outer wall of the pipe 200, the arc plate sample 202 can be placed on the convex stage 11; when a scratch defect needs to be processed on the inner wall of the pipe 200, the arc plate sample 202 can be placed on the concave stage 12.

[0055] It should be noted that when it is necessary to process an oblique scratch on the arc plate sample 202 that is at a certain angle to the axial direction of the arc plate sample 202, if the stage 10 and the indenter 20 cannot move along the third direction F3, the bearing surface 13 can be set so that the scratch direction is parallel to the second direction after the arc plate sample 202 is attached to the bearing surface 13. At this time, the indenter 20 is driven to move along the first direction and the stage 10 is driven to move along the second direction at the same time, so that the desired oblique scratch can be processed.

[0056] Figure 4 This is one of the structural schematic diagrams of the pressure head provided in the embodiment of the present application, Figure 5 The second structural diagram of the pressure head provided in the embodiment of the present application is shown in conjunction with Figure 4 and Figure 5 The indenter 20 can be a variety of different types of tools, such as a spherical tool, an elliptical tool, a conical tool 21 or a pyramidal tool 22, etc. Different tools can be selected for installation and replacement according to the specific experimental requirements for the scratch morphology.

[0057] Continue reading Figure 1In some embodiments of the present application, the pipeline scratch defect processing and manufacturing system 100 may further include a detection device 40 and a control device 50. The detection device 40 can detect the pressure and displacement of the pressure head 20. The control device 50 is electrically connected to the detection device 40 and the driving device 30 respectively. The control device 50 receives the detection signal of the detection device 40 and sends a control signal to the driving device 30.

[0058] It should be noted that the above-mentioned detection device 40 may include a displacement sensor 41 and a force sensor 42 . The displacement sensor 41 may detect the displacement parameter of the pressing head 20 , and the force sensor 42 may detect the force parameter of the pressing head 20 .

[0059] Continue reading Figure 1 The present application may also include a data acquisition device 70 , which is electrically connected to the displacement sensor 41 , the force sensor 42 , and the control device 50 , so as to convert the analog signals collected by the displacement sensor 41 and the force sensor 42 into digital signals and transmit them to the control device 50 .

[0060] It should also be noted that the above-mentioned control device 50 can be the relevant control hardware and control program in the computer 51. The control device 50 can be used to adjust the displacement parameters of the pressure head 20 and the arc plate sample 202 to zero, so that the coordinates of the pressure head 20 and the arc plate sample 202 on the display screen 52 are adjusted to zero, so as to be used as reference coordinates for subsequent processing.

[0061] It can be understood that since the force applied by the indenter 20 on the arc plate sample 202 and the reaction force of the arc plate sample 202 on the indenter 20 are the same, and the displacement of the indenter 20 in the arc plate sample 202 and the processing size of the scratch defect are also the same, the force applied to the arc plate sample 202 and the size of the scratch defect can be indirectly controlled by detecting the indenter 20 by the displacement sensor 41 and the force sensor 42.

[0062] Continue reading Figure 1 In some embodiments of the present application, the pipeline scratch defect processing system 100 further includes a fixture 60. The driving device 30 includes a first actuator 31 and a second actuator 32. The first actuator 31 is disposed on the fixture 60. The output shaft of the first actuator 31 is connected to the pressure head 20 and can reciprocate relative to the fixture 60 along the first direction F1. The second actuator 32 is also disposed on the fixture 60. The output shaft of the second actuator 32 can abut against the stage 10 and can reciprocate relative to the fixture 60 along the second direction F2.

[0063] In this way, the first actuator 31 can provide driving force for the processing of the scratch defect in the depth direction, and the second actuator 32 can provide driving force for the processing of the scratch defect in the length direction, so that the processing process of the scratch defect is smooth and orderly.

[0064] Continue reading Figure 1 In some embodiments of the present application, the fixing device 60 is further provided with a first guide rail 61 and a second guide rail 62 extending along the third direction F3, the pressure head 20 can reciprocate in the first guide rail 61, and the output shaft of the first actuator 31 can reciprocate in the second guide rail 62. The driving device 30 can also include a third actuator disposed inside the fixing device 60, and the torque output by the third actuator can drive the actuating shaft to drive the first actuator 31 and the pressure head 20 to reciprocate relative to the fixing device 60 along the third direction F3 through gear rotation.

[0065] It should be noted that the specific types of the first actuator 31, the second actuator 32 and the third actuator can be hydraulic actuators, pneumatic actuators or electric actuators. When the first actuator 31, the second actuator 32 and the third actuator are hydraulic actuators, the hydraulic energy of the oil source pump station 34 can be converted into mechanical energy through the hydraulic cylinder 33, and the converted mechanical energy can drive the first actuator 31 and the second actuator 32 to move.

[0066] The above is a description of the pipeline scratch defect processing and manufacturing system of the present application. Based on the system, the following is a description of the pipeline scratch defect processing and manufacturing method of the present application.

[0067] Figure 6 Flow chart of the pipeline scratch defect processing method provided in the embodiment of the present application, see Figure 6 The pipeline scratch defect processing method provided in the present application may include steps S101-S105:

[0068] Step S101, obtaining an arc plate sample, where the arc plate sample is a portion of a pipeline.

[0069] Figure 7 A schematic diagram of the structure of the spiral seam pipe provided in the embodiment of the present application, Figure 8 The schematic diagram of the structure of the wide plate sample provided in the embodiment of the present application is combined with reference to Figure 7 and Figure 8 The above-mentioned pipeline can be a seamless pipe, a straight seam pipe or a spiral seam pipe, etc. The arc plate sample can be directly obtained from the pipeline, or a wide plate sample can be prepared from the pipeline according to the natural gas industry standard SY / T7318.1-2016, and then the required arc plate sample 202 can be obtained from the wide plate sample. In this way, when researchers only need to perform tensile tests, the latter method can be used to reduce material consumption and experimental costs.

[0070] Fig. 9 For a flow chart of the arc plate sample acquisition method provided in the embodiment of the present application, see Fig. 9 In some possible implementations, step S101 may include steps S1011-S1012:

[0071] Step S1011, determining the weld-free area of ​​the pipeline.

[0072] Step S1012: cutting in the non-weld area to obtain arc plate samples.

[0073] Understandably, since welds are formed during the preparation of the pipeline, and the structure of the welds is irregular, it may affect the processing of scratch defects. The present application cuts the non-weld area of ​​the pipeline to obtain arc plate samples, and the surface of the arc plate samples is regular, which is conducive to reducing the processing error of scratch defects.

[0074] It should be noted that the specific size of the arc plate sample can be determined according to the test requirements and the size of the bearing surface of the stage.

[0075] Step S102, controlling the pressing head to press into the arc plate sample along a first direction.

[0076] It can be understood that the formation process of the scratch defect on the pipeline includes two processes: the foreign matter squeezes and invades the pipe wall, and the foreign matter slides relative to the pipe wall. The present application effectively simulates the process of the foreign matter squeezing and invading the pipe wall by pressing the pressure head into the arc plate sample along the first direction, thereby better restoring the first process of the scratch defect formation.

[0077] Fig.10 For a schematic diagram of the control flow of the pressure head provided in the embodiment of the present application, see Fig.10 In some possible implementations, step S102 may include steps S1021-S1023:

[0078] Step S1021 , controlling the pressure head to contact the arc plate sample along a first direction.

[0079] In some possible embodiments, a displacement sensor can be used to detect the position of the pressure head. When it is detected that the pressure head moves toward the arc plate sample along the first direction (i.e., the height direction) and just contacts the arc plate sample, a control device electrically connected to the displacement sensor can send a control instruction to the first actuator to control the pressure head to stop moving.

[0080] In addition, if the arc plate sample is not under the pressure head at the initial position, the second actuator can be used to push the stage to move along the second direction (i.e., the horizontal direction) until the stage moves to under the pressure head, and the outer edge of the pressure head and the arc plate sample maintain a tool head (i.e., the processing part of the pressure head) size (about 50mm-100mm), so that the pressure head can be completely pressed into the arc plate sample, while ensuring the safe operation of the equipment.

[0081] Step S1022: The position where the pressure head contacts the arc plate sample is set as the reference position.

[0082] In some possible implementations, the control device may be related control hardware and a control program in a computer, and the displacement parameters of the pressure head and the arc plate sample may be adjusted to zero through the control device, so that the coordinates of the pressure head and the arc plate sample on the computer display screen are adjusted to zero.

[0083] In this way, in the subsequent scratch defect processing, the displacement of the indenter or arc plate sample is the processing size of the scratch defect. The processing personnel can intuitively obtain the processing progress of the scratch defect by observing the coordinates of the indenter or arc plate sample on the display screen.

[0084] Step S1023, controlling the pressing head to feed a first preset size along a first direction.

[0085] It should be noted that the first preset size is the depth of the scratch defect, and the specific value can be set according to the specific test requirements of the experimenter. For example, if the experimenter needs to explore the influence of the depth of the scratch defect on the hydrostatic burst test, the other conditions of the scratch defect can be controlled to be the same, and the first preset size can be set to 2mm, 3mm, 4mm and 5mm, etc., to process multiple scratch defects with different depths, providing a basis for subsequent experimental research.

[0086] Step S103, controlling the pressure head to maintain a preset pressure for a preset time period.

[0087] It can be understood that due to the property of plastic flow of metal, under the extrusion of the indenter, part of the metal crystal inside the arc plate sample can slide relative to another part along certain crystal planes and crystal directions. Therefore, after the indenter completes the processing in the depth direction of the scratch defect, it needs to be left to stand for a preset time. The specific time can be determined according to the material of the arc plate sample. For example, when the material of the arc plate sample is steel, the preset time can be 5 minutes, until the readings of the force sensor and displacement sensor remain stable. At this time, the metal crystal structure inside the arc plate sample tends to be stable, that is, the structure of the scratch defect in the depth direction remains stable, which is convenient for reducing subsequent processing errors.

[0088] Step S104 , controlling the pressure head and the arc plate sample to move relative to each other along a second direction, where the second direction is perpendicular to the first direction.

[0089] It can be understood that the present application simulates the extrusion process between a tool or a foreign object such as a rock and the pipe wall by pressing the pressure head into the arc plate sample along a first direction, and then simulates the relative sliding process between the foreign object and the pipe wall by relative movement of the arc plate sample and the pressure head along a second direction. In this way, the present application can fully simulate the forming process of the pipe scratch defect and form a pipe scratch defect with a structure similar to that in the actual scene, thereby providing favorable conditions for the experimental study of the pipe fracture mechanism.

[0090] Fig.11 For the control flow diagram of the arc plate sample provided in the embodiment of the present application, refer to Fig.11 In some possible implementations, step S104 may include step S1040, controlling the arc plate sample to feed a second preset size along a second direction.

[0091] It can be understood that after the pressure head maintains the preset pressure for the preset time, the second actuator can push the stage to move in the second direction, so that the arc plate sample placed on the stage can move relative to the pressure head to complete the processing of the scratch defect in the length direction, and the second preset size is the size of the scratch in the length direction. Similar to the first preset size, the second preset size can also be freely set according to specific test requirements.

[0092] In some other possible implementations, the pressure head may also be controlled to advance a second preset dimension along the second direction, as long as a relative displacement between the pressure head and the arc plate sample can be generated.

[0093] Fig.12 The flow chart of the displacement loading mode provided in the embodiment of the present application is shown in FIG. Fig.12 In some embodiments of the present application, step S1040 may include step S1040a, controlling the position of the pressure head to remain unchanged, feeding the arc plate sample along a second direction to a second preset size, and the feeding direction of the arc plate sample is parallel to the axial direction of the arc plate sample.

[0094] It can be understood that if it is necessary to process a scratch defect in the axial direction of the arc plate sample, when the arc plate sample is placed on the carrying surface of the stage, the placement direction of the arc plate sample can be adjusted so that the axial direction of the arc plate sample is consistent with the feeding direction (i.e., the second direction) of the arc plate sample. In this way, when the position of the pressure head remains unchanged and the arc plate sample moves along the second direction, the relative position between the arc plate sample and the pressure head in the first direction remains unchanged, so that during the process of processing the length of the scratch defect, the size in the depth direction is kept consistent, thereby ensuring the processing accuracy of the scratch defect.

[0095] Fig.13 For a flow chart of the force loading mode provided in the embodiment of the present application, see Fig.13In some other embodiments of the present application, step S1040 may also include step S1040b, controlling the force between the pressure head and the arc plate sample to remain unchanged, and feeding the arc plate sample along a second direction by a second preset size, and the feeding direction of the arc plate sample is perpendicular to the axial direction of the arc plate sample.

[0096] It can be understood that if it is necessary to process a scratch defect in the circumferential direction of the arc plate sample, when the arc plate sample is placed on the bearing surface of the stage, the placement direction of the arc plate sample can be adjusted so that the axial direction of the arc plate sample is perpendicular to the feeding direction of the arc plate sample. During the movement of the arc plate sample along the second direction, if the position of the indenter does not change, the relative distance between the indenter and the surface to be processed of the arc plate sample in the first direction and the interaction force between the two will change, resulting in inconsistent dimensions of the scratch defect in the depth direction.

[0097] Therefore, through the cooperation of the force sensor, the control device and the first actuator, the first actuator can control the pressure head to move along the first direction as the arc plate sample moves along the second direction, so as to keep the relative distance between the pressure head and the surface to be processed of the arc plate sample in the first direction and the interaction force between the two stable, thereby ensuring that the size of the scratch defect in the depth direction is consistent.

[0098] Fig.14 Another schematic diagram of the force loading mode provided in the embodiment of the present application is shown in FIG. Fig.14 In another embodiment of the present application, step S1040 may further include step S1040c, controlling the force between the pressure head and the arc plate sample to remain unchanged, and controlling the pressure head to feed the third preset size along the third direction while the arc plate sample is fed along the second direction by the second preset size, and the feeding direction of the arc plate sample is perpendicular to the axial direction of the arc plate sample. The third direction is perpendicular to the first direction and the second direction.

[0099] It can be understood that according to the principle of motion synthesis and the parallelogram rule, on the basis of keeping the force between the indenter and the arc plate sample unchanged, the movement of the arc plate sample along the second direction driven by the stage can be regarded as one of the sub-motions, and the movement of the indenter relative to the arc plate sample along the third direction can be regarded as another sub-motion. Then, the scratch trajectory processed by the combined motion of the indenter on the arc plate sample can be a curve of any shape, and the specific shape can be determined by the moving speed of the stage and the indenter. The ratio between the second preset size and the third preset size is the speed ratio of the stage and the indenter, which can be set according to the required test requirements.

[0100] Step S105 , detecting whether the first preset size and the second preset size on the arc plate sample meet the preset sizes, and if so, connecting the arc plate sample to the non-weld area.

[0101] Thus, after verifying the size of the scratch defect processed on the arc plate sample and welding it to the original cutting position of the weld-free area, subsequent pressure burst test, tensile test or fatigue test can be carried out.

[0102] It should be noted that the first preset size and the second preset size respectively determine the length and depth of the scratch defect, while the width and cross-sectional shape of the scratch can be determined by the tool.

[0103] In summary, the pipeline scratch defect processing and manufacturing method and system provided in the present application can be applied to pipelines of different steel grades, different calibers and different wall thicknesses, and can process axial or circumferential scratch defects of different shapes and sizes on the inner or outer wall of the pipeline, and better restore the forming process and scratch structure of pipeline scratches in actual scenarios, thereby providing favorable conditions for experimental research on the cracking mechanism of scratch defects.

[0104] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application. Unless otherwise specified, the above-mentioned directional description can be flexibly set in the process of actual application under the condition that the relative positional relationship shown in the accompanying drawings is met.

[0105] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0106] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0107] In the present application, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, article or device including the element.

[0108] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0109] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0110] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for processing and manufacturing pipeline scratch defects, characterized in that: include: Obtaining an arc plate sample, wherein the arc plate sample is a portion of a pipeline; Controlling the pressure head to press into the arc plate sample along a first direction; as well as The pressure head and the arc plate sample are controlled to move relative to each other along a second direction; the second direction is perpendicular to the first direction.

2. The pipeline scratch defect processing method according to claim 1 is characterized in that: The control pressure head is pressed into the arc plate sample along a first direction, comprising: Controlling the pressure head to contact the arc plate sample along the first direction; The pressing head is controlled to advance a first preset dimension along the first direction.

3. The pipeline scratch defect processing method according to claim 2 is characterized in that: After controlling the pressure head to contact the arc plate sample along the first direction and before controlling the pressure head to feed a first preset size along the first direction, the pipeline scratch defect processing method further includes: The position where the pressure head contacts the arc plate sample is defined as a reference position.

4. The pipeline scratch defect processing method according to claim 3 is characterized in that: The step of controlling the pressure head and the arc plate sample to move relative to each other along the second direction comprises: The arc plate sample is controlled to be fed along a second direction to a second preset size.

5. The pipeline scratch defect processing method according to claim 4 is characterized in that: The step of controlling the arc plate sample to feed a second preset size along a second direction comprises: The position of the pressure head is controlled to remain unchanged, and the arc plate sample is fed along a second direction by a second preset size, and the feeding direction of the arc plate sample is parallel to the axial direction of the arc plate sample.

6. The pipeline scratch defect processing method according to claim 4 is characterized in that: The controlling the arc plate sample to feed a second preset size along a second direction also includes: The acting force between the pressure head and the arc plate sample is controlled to remain unchanged, and the arc plate sample is fed along a second direction by a second preset size, and the feeding direction of the arc plate sample is perpendicular to the axial direction of the arc plate sample.

7. The pipeline scratch defect processing method according to claim 6 is characterized in that: The controlling the arc plate sample to feed a second preset size along a second direction also includes: The force between the pressure head and the arc plate sample is controlled to remain unchanged. When the arc plate sample is fed along the second direction by a second preset size, the pressure head is controlled to be fed along the third direction by a third preset size. The feeding direction of the arc plate sample is perpendicular to the axial direction of the arc plate sample. The third direction is perpendicular to the first direction and the second direction.

8. The pipeline scratch defect processing method according to claim 1 is characterized in that: After the control pressure head is pressed into the arc plate sample along the first direction, and before the control pressure head and the arc plate sample are moved relative to each other along the second direction, the pipeline scratch defect processing method further includes: The pressure head is controlled to maintain a preset pressure for a preset time period.

9. The pipeline scratch defect processing method according to any one of claims 1 to 8, characterized in that: The obtaining of arc plate samples comprises: determining a weld-free area of ​​the pipeline; Cutting is performed in the non-weld area to obtain the arc plate sample.

10. The pipeline scratch defect processing method according to claim 9, characterized in that: After controlling the arc plate sample to move along the second direction, the pipeline scratch defect processing method further includes: Check whether the first preset size and the second preset size on the arc plate sample meet the preset sizes; if so, connect the arc plate sample to the weld-free area.

11. A pipeline scratch defect processing and manufacturing system, used to execute the method according to any one of claims 1 to 10, characterized in that: include: A stage, the stage is used to carry the arc plate sample; A pressure head, the pressure head is arranged on a side of the arc plate sample away from the stage; as well as A driving device, wherein the driving device can drive the pressing head to move toward the arc plate sample along a first direction, and drive the stage and the pressing head to move relative to each other along a second direction; the second direction is perpendicular to the first direction.

12. The pipeline scratch defect processing and manufacturing system according to claim 11, characterized in that: The driving device can also drive the pressure head to move along a third direction; The third direction is perpendicular to the first direction and the second direction.

13. The pipeline scratch defect processing and manufacturing system according to claim 11, characterized in that: The loading platform has a loading surface; The bearing surface is convex toward the side close to the pressure head, or the bearing surface is concave toward the side away from the pressure head.

14. The pipeline scratch defect processing and manufacturing system according to claim 11, characterized in that: Also includes: A detection device capable of detecting the pressure and displacement of the pressure head; as well as A control device is electrically connected to the detection device and the driving device respectively, and the control device receives a detection signal from the detection device and sends a control signal to the driving device.

15. The pipeline scratch defect processing and manufacturing system according to claim 11, characterized in that: It also includes a fixing device; the driving device includes: A first actuator, disposed on the fixing device, wherein an output shaft of the first actuator is connected to the pressure head and is capable of reciprocating relative to the fixing device along the first direction; a second actuator, disposed on the fixing device, wherein an output shaft of the second actuator can abut against the stage and can reciprocate relative to the fixing device along the second direction; and The third actuator is disposed on the fixing device, and is used to drive the pressing head to reciprocate relative to the fixing device along the third direction.

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