Sample for ultrasonic testing of the end of a welded pipe using a phased array, as well as for comparison and correction of sensitivity in ultrasonic testing
A sample with vertical through holes, flat-bottomed holes, and directional recesses enhances ultrasonic testing precision at welded pipe ends, addressing the inadequacies of manual inspection and improving defect detection accuracy and efficiency.
Patent Information
- Authority / Receiving Office
- RU · RU
- Patent Type
- Patents
- Current Assignee / Owner
- CHAJNA NESHINAL PETROLIUM KORPOREJSHN
- Filing Date
- 2023-12-05
- Publication Date
- 2026-07-10
AI Technical Summary
The inspection of welded pipe ends, including the weld joint, heat-affected zones, base materials, and groove surfaces, is insufficiently comprehensive and accurate, leading to missed defects due to reliance on manual inspection and lack of automated precision.
A sample for ultrasonic testing using a phased array with specific configurations of vertical through holes, flat-bottomed holes, and directional recesses is designed to enhance the sensitivity and accuracy of defect detection at the ends of welded pipes, enabling real-time phased array ultrasonic testing.
The solution improves inspection accuracy by correcting the position and angle of the ultrasonic phased array, reducing missed defects and enhancing the completeness of the inspection process, thereby improving production efficiency and quality control.
Smart Images
Figure 00000003_ABST
Abstract
Description
[0001] FIELD OF INVENTION
[0002] The present invention relates to the technical field of testing the ends of welded pipes, in particular to a sample for ultrasonic testing of the end of a welded pipe using a phased array, as well as for comparing and correcting sensitivity in ultrasonic testing.
[0003] BACKGROUND OF THE INVENTION
[0004] The production process of welded pipes requires non-destructive testing, which mainly includes ultrasonic testing, beam testing, ultrasonic phased array testing, dynamic particle testing, and magnetic particle testing. Ultrasonic testing, beam testing, ultrasonic phased array testing, and dynamic particle testing are generally automated in combination with manual inspection, but the ends of welded pipes are mainly inspected manually. Furthermore, the main non-destructive testing of welded pipes at construction sites also often uses modes including ultrasonic testing, beam testing, ultrasonic phased array testing, and time-of-flight diffraction (TOFD) technology. However, due to the environmental impact of the construction site, manual inspection is generally adopted.
[0005] As inspection standards have improved, higher requirements have been put forward for the inspection of welded pipe joints, such as inspection provisions and defect categories. Initial automated inspection of welded pipes mainly focused on the inspection of the weld joint of the steel pipe body and the base materials on both sides of the weld joint. Accurate inspection of the weld joint of the welded pipe end, the base material of the pipe end, and the groove surface of the pipe end requires manual inspection, which relies on experience and has a certain blind spot. Therefore, the current inspection of welded pipe end joints, the heat-affected zones of welded pipe end joints, the base materials of the pipe end, and the groove surfaces of the pipe end in the welded pipe industry is insufficiently comprehensive and accurate, resulting in missed defects.
[0006] SUMMARY OF THE INVENTION
[0007] The purpose of the embodiments of the present invention is to provide a sample for ultrasonic testing of the end of a welded pipe using a phased array, and for comparing and correcting the sensitivity in ultrasonic testing, which is used to solve the above-mentioned problem that the inspection of welded joints of the ends of welded pipes, heat-affected zones of welded joints of pipe ends, base materials of pipe ends and groove surfaces of pipe ends in the welded pipe industry is not sufficiently complete and accurate, resulting in missed defects.
[0008] To achieve the above objective, one embodiment of the invention provides a sample for ultrasonic testing of the end of a welded pipe using a phased array, including a welded pipe. The welded pipe has the shape of a hollow cylinder, the weld joint is formed in the pipe body, and the end of the pipe body is a grooved surface, wherein the sample additionally has:
[0009] multiple vertical through holes designed to perform comparative correction of sensitivity to non-stratified defects during ultrasonic testing of the end of a welded pipe using a phased array, wherein at least one vertical through hole is made on a grooved surface, at least three vertical through holes are made in a welded joint and at least three vertical through holes are made in a pipe body,
[0010] a plurality of flat-bottomed holes intended for performing comparative correction of sensitivity to stratified defects during ultrasonic testing of the end of a welded pipe using a phased array, wherein at least one flat-bottomed hole is formed on a grooved surface and at least three flat-bottomed holes are formed in the body of the pipe, and
[0011] multiple directional recesses designed to perform comparative correction of the defect detection range at the end of a welded pipe during ultrasonic testing using a phased array, wherein at least two directional recesses are provided on the grooved surface, and at least four directional recesses are provided in the pipe body.
[0012] Optionally, on the grooved surface, a first flat-bottomed hole, a first vertical through hole, a first directional recess and a second directional recess are formed sequentially from top to bottom,
[0013] wherein the first flat-bottomed hole and the first vertical through hole are located above the weld joint, the distance between the first vertical through hole and the weld joint is less than the distance between the first flat-bottomed hole and the weld joint, and the distance between the first flat-bottomed hole and the weld joint is less , where r is the radius of the welded pipe, and
[0014] the first directional recess and the second directional recess are located below the weld joint, the distance between the first directional recess and the weld joint is less than the distance between the second directional recess and the weld joint, and the distance between the second directional recess and the weld joint is less , where r is the radius of the welded pipe.
[0015] Optionally, the lines of the first and second recesses intersect on the central axis of the welded pipe, wherein the first directional recess is formed longitudinally on the grooved surface, and the second directional recess is formed transversely on the grooved surface.
[0016] Optionally, a second vertical through hole, a third vertical through hole and a fourth vertical through hole are formed in the weld, wherein the second vertical through hole is formed along the center line of the weld joint, and the third vertical through hole and the fourth vertical through hole are symmetrically formed in the heel of the weld joint along the center line of the weld joint.
[0017] Optionally, a fifth vertical through hole, a sixth vertical through hole and a seventh vertical through hole are made in the pipe body sequentially from top to bottom,
[0018] The passage lines of the fifth vertical through hole, the sixth vertical through hole and the seventh vertical through hole intersect at the same location of the central axis of the welded pipe,
[0019] the location of the sixth vertical through hole is opposite to the location of the weld joint,
[0020] the fifth vertical through hole is located above the sixth vertical through hole, and the internal angle between the fifth vertical through hole and the sixth vertical through hole is 90 degrees, and
[0021] The seventh vertical through hole is located below the sixth vertical through hole, and the internal angle between the seventh vertical through hole and the sixth vertical through hole is 60 degrees.
[0022] Optionally, a second flat-bottomed hole, a third flat-bottomed hole and a fourth flat-bottomed hole may be provided in the pipe body,
[0023] the second flat-bottomed hole and the third flat-bottomed hole are symmetrically formed on both sides of the weld joint along the center line of the weld joint, and the distance between the second flat-bottomed hole and the corresponding heel of the weld joint, and between the third flat-bottomed hole and the corresponding heel of the weld joint are less than 25 mm, and
[0024] The fourth flat-bottomed hole is located below the weld joint, and the distance between the fourth flat-bottomed hole and the weld joint is smaller , where r is the radius of the welded pipe.
[0025] Optionally, the third, fourth, fifth and sixth directional recesses are made in the pipe body sequentially from top to bottom,
[0026] wherein the lines of the third directional notch, the fourth directional notch, the fifth directional notch and the sixth directional notch intersect on the central axis of the welded pipe,
[0027] The third directional recess and the fourth directional recess are located above the weld joint, the distance between the fourth directional recess and the weld joint is less than the distance between the third directional recess and the weld joint, and the distance between the third directional recess and the weld joint is less , where r is the radius of the welded pipe, and
[0028] The fifth directional recess and the sixth directional recess are located below the weld joint, the distance between the fifth directional recess and the weld joint is less than the distance between the sixth directional recess and the weld joint, and the distance between the sixth directional recess and the weld joint is less , where r is the radius of the welded pipe.
[0029] Optionally, a third directional recess is formed on the inner wall of the pipe body in the axial direction of the welded pipe, a fourth directional recess is formed on the inner wall of the pipe body in the circumferential direction of the welded pipe, a fifth directional recess is formed on the outer wall of the pipe body in the circumferential direction of the welded pipe, and a sixth directional recess is formed on the outer wall of the pipe body in the axial direction of the welded pipe.
[0030] Optional, the depth of the flat-bottomed holes is half the wall thickness of the base material of the welded pipe, and the directional recesses are N5 in size.
[0031] Optional, the pipe body diameter is between 426mm and 1422mm, the wall thickness of the pipe body is between 6mm and 42mm, the ovality of the pipe body is less than or equal to 2% of the diameter of the welded pipe, and the bevel of the cut end of the welded pipe is less than or equal to 4mm,
[0032] The weld joint reinforcement is less than or equal to 4.5mm, the weld joint width is less than or equal to 40mm, and the weld joint discrepancy is less than or equal to 3mm, and
[0033] The inclination angle of the groove surface is less than or equal to 40 degrees, and the width of its blunt edge is less than or equal to 4 mm.
[0034] This technical solution, through the precise creation of vertical through holes, flat-bottomed holes and directional recesses in the welded pipe, is a model for real-time phased array ultrasonic testing of the welded pipe end, achieving the correction of the position and angle of the ultrasonic phased array in the process of real-time phased array ultrasonic testing of the welded pipe end, making real-time phased array ultrasonic testing more complete, improving the inspection accuracy and eliminating missed defects.
[0035] Other features and advantages of embodiments of the present invention will be described in detail in the following detailed description.
[0036] BRIEF DESCRIPTION OF DRAWINGS
[0037] The accompanying drawings are used to provide a further understanding of the embodiments of the invention, form part of the description and are used to explain the embodiments of the invention together with the following detailed description, but are not limiting to the embodiments of the invention. In the accompanying drawings:
[0038] Fig. 1 shows a structural diagram of a sample for ultrasonic testing of the end of a welded pipe using a phased array, made in accordance with the invention.
[0039] Fig. 2 shows a schematic diagram of a section of a sample for ultrasonic testing of the end of a welded pipe using a phased array, made in accordance with the invention.
[0040] Item Number Description
[0041] 1 - pipe body,
[0042] 2 - welded joint,
[0043] 3 - grooved surface,
[0044] 41 - the first flat-bottomed hole,
[0045] 42 - the second flat-bottomed hole,
[0046] 43 - the third flat-bottomed hole,
[0047] 44 - the fourth flat-bottomed hole,
[0048] 51 - first vertical through hole,
[0049] 52 - the second vertical through hole,
[0050] 53 - the third vertical through hole,
[0051] 54 - the fourth vertical through hole,
[0052] 55 - the fifth vertical through hole,
[0053] 56 - the sixth vertical through hole,
[0054] 57 - the seventh vertical through hole,
[0055] 61 - first directional notch,
[0056] 62 - second directional notch,
[0057] 63 - the third directional notch,
[0058] 64 - the fourth directional notch,
[0059] 65 - the fifth directional notch,
[0060] 66 - the sixth directional notch.
[0061] DETAILED DESCRIPTION OF EXECUTION OPTIONS
[0062] A detailed description of embodiments of the present invention is presented below in conjunction with the accompanying drawings. It should be understood that the detailed description presented herein is used only for illustration and explanation of embodiments of the invention and is not used to limit them.
[0063] In the embodiments of the invention, unless otherwise indicated, words used to denote orientation, such as "up, down, left, right," generally refer to the orientation or positional relationship based on the accompanying drawings, or the orientation or positional relationship in which the product of the invention is typically positioned when used.
[0064] The terms "first," "second," and "third" are used only to distinguish descriptions and are not to be understood as indicating or implying relative importance.
[0065] The terms "parallel," "perpendicular," and so on do not mean that the parts must be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" simply means that its direction is more parallel than "perpendicular," and does not mean that the structure must be perfectly parallel, but may be slightly inclined.
[0066] The terms "horizontal," "vertical," "overhanging," etc., do not mean that parts must be perfectly horizontal, vertical, or overhanging, but may be slightly inclined. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
[0067] Furthermore, the terms "approximately" and "substantially" are intended to indicate that the relevant content does not require absolute precision but may have a certain deviation. For example, "approximately equal" does not only mean absolute equality, since in the actual production and operation process, absolute equality is difficult to achieve, and a certain deviation generally exists. Therefore, in addition to absolute equality, "approximately equal" further includes the above-mentioned case where a certain deviation exists. As an example, in other cases, unless otherwise specified, the terms "approximately," "substantially," etc., have the same meaning as above.
[0068] In the description of the invention, it should be further noted that, unless otherwise expressly stated or limited, the terms "located," "installed," "connected," and "connection" should be understood in a broad sense, for example, as a rigid connection, as a detachable connection, or as a connection as a single unit, and as a direct connection, as an indirect connection through an intermediate medium, and as a connection within two elements. For those skilled in the art, the specific meanings of the above terms in the invention may be understood in specific circumstances.
[0069] Fig. 1 depicts a structural diagram of a sample for ultrasonic testing of the end of a welded pipe using a phased array, as well as for comparison and correction of sensitivity in ultrasonic testing, performed in accordance with the invention. Fig. 2 depicts a schematic diagram of a section of a sample for ultrasonic testing of the end of a welded pipe using a phased array, as well as for comparison and correction of sensitivity in ultrasonic testing, performed in accordance with the invention.
[0070] As shown in Fig. 1 and 2, this embodiment provides a sample for ultrasonic testing of the end of a welded pipe using a phased array, as well as for comparison and correction of sensitivity in ultrasonic testing, comprising a welded pipe, wherein the welded pipe has the shape of a hollow cylinder, a welded joint 2 is formed in the body 1 of the welded pipe, and the end of the body 1 of the welded pipe is a grooved surface 3. The sample further comprises:
[0071] several vertical through holes intended for performing comparative correction of sensitivity to non-stratified defects during ultrasonic testing of the end of a welded pipe using a phased array, wherein at least one vertical through hole is made on the grooved surface 3, at least three vertical through holes are made in the welded joint 2 and at least three vertical through holes are made in the body 1 of the pipe,
[0072] a plurality of flat-bottomed holes intended for performing comparative correction of sensitivity to stratified defects during ultrasonic testing of the end of a welded pipe using a phased array, wherein at least one flat-bottomed hole is made on the grooved surface 3 and at least three flat-bottomed holes are made in the body 1 of the pipe, and
[0073] several directional recesses intended for carrying out comparative correction of the defect detection range during ultrasonic testing of the end of a welded pipe using a phased array, wherein at least two directional recesses are provided on the grooved surface 3, and at least four directional recesses are provided in the body of the pipe 1.
[0074] In particular, in this embodiment, the ultrasonic phased array is a combination of ultrasonic probe plates, wherein multiple piezoelectric plates are distributed and arranged according to a certain regularity, then each plate is excited one after another according to a predetermined delay time, and the ultrasound emitted by all the plates forms a common wavefront, which can effectively control the shape and direction of the emitted ultrasonic beam (wavefront) and can achieve scanning, deflection and focusing of the ultrasonic beam.
[0075] Next, on the surface 3, a first flat-bottomed hole 41, a first vertical through hole 51, a first directional recess 61 and a second directional recess 62 are sequentially formed from top to bottom,
[0076] wherein the first flat-bottomed hole 41 and the first vertical through hole 51 are located above the weld joint 2, the distance between the first vertical through hole 51 and the joint 2 is less than the straight-line distance between the first flat-bottomed hole 41 and the weld joint 2, and the distance between the first flat-bottomed hole 41 and the weld joint 2 is less , where r is the radius of the welded pipe, and
[0077] the first directional recess 61 and the second directional recess 62 are located below the weld joint 2, the distance between the first directional recess 61 and the weld joint 2 is less than the distance between the second directional recess 62 and the weld joint 2, and the straight distance between the second directional recess 62 and the weld joint 2 is less , where r is the radius of the welded pipe.
[0078] In particular, the distance from the first vertical through hole 51 to the weld joint 2 is the distance along the perpendicular line after drawing a vertical line from the first vertical through hole 51 to the weld joint 2. The straight line distance from the first flat-bottomed hole 41 to the weld joint 2 is the distance along the perpendicular line after drawing a vertical line from the first flat-bottomed hole 41 to the weld joint 2. The distance from the first directional recess 61 to the weld joint 2 is the distance along the perpendicular line after drawing a vertical line from the first directional recess 61 to the weld joint 2. The distance from the second directional recess 62 to the weld joint 2 is the distance along the perpendicular line after drawing a vertical line from the second directional recess 62 to the weld joint 2.From top to bottom, the first flat-bottomed hole 41, the first vertical through hole 51, the first directional recess 61 and the second directional recess 62 are made on the grooved surface 3 sequentially in a counterclockwise direction, taking the upper end of the welded pipe as the starting point.
[0079] Next, the passage lines of the first directional recess 61 and the second directional recess 62 intersect on the central axis of the welded pipe.
[0080] The first directional recess 61 is formed longitudinally on the grooved surface 3. The second directional recess 62 is formed transversely on the grooved surface 3.
[0081] In particular, in this embodiment, relative to the central axis of the welded pipe, the opening direction of the first directional recess 61 is perpendicular to the central axis of the welded pipe, and the opening direction of the second directional recess 62 is parallel to the central axis of the welded pipe, so that the opening directions of the first directional recess 61 and the second directional recess 62 are perpendicular to each other. At the same time, both the first recess 61 and the second recess 62 point to the central axis of the welded pipe, and the lines of passage of both of them intersect at the same point of the central axis of the welded pipe. In another embodiment, the first recess 61 can be transversely formed on the grooved surface 3, and the second recess 62 can be longitudinally formed on the surface 3, it is only necessary to satisfy the condition that the opening directions of the first recess 61 and the second recess 62 are perpendicular to each other.
[0082] Next, a second vertical through hole 52, a third vertical through hole 53, and a fourth vertical through hole 54 are formed in the welded joint 2.
[0083] The second vertical through hole 52 is formed along the center line of the welded joint 2, and the third vertical through hole 53 and the fourth vertical through hole 54 are symmetrically formed in the heel of the welded joint 2 along the center line of the welded joint 2.
[0084] Next, in the pipe body 1, a fifth vertical through hole 55, a sixth vertical through hole 56, and a seventh vertical through hole 57 are sequentially made from top to bottom.
[0085] The lines of the fifth vertical through hole 55, the sixth vertical through hole 56 and the seventh vertical through hole 57 intersect on the central axis of the welded pipe.
[0086] The position of the sixth vertical through hole 56 is opposite to the position of the weld joint 2.
[0087] The fifth vertical through hole 55 is located above the sixth vertical through hole 56, and the internal angle between the fifth vertical through hole 55 and the sixth vertical through hole 56 is 90 degrees.
[0088] The seventh vertical through hole 57 is located below the sixth vertical through hole 56, and the internal angle between the seventh vertical through hole 57 and the sixth vertical through hole 56 is 60 degrees.
[0089] Specifically, from top to bottom, in the pipe body 1, a fifth vertical through hole 55, a sixth vertical through hole 56 and a seventh vertical through hole 57 are successively made clockwise, taking the uppermost end of the welded pipe as the starting point, and the lines of passage of the fifth vertical through hole 55, the sixth vertical through hole 56 and the seventh vertical through hole 57 intersect at the same point of the central axis of the welded pipe.
[0090] Next, in the body 1 of the pipe, a second flat-bottomed hole 42, a third flat-bottomed hole 43 and a fourth flat-bottomed hole 44 are made.
[0091] The second flat-bottomed hole 42 and the third flat-bottomed hole 43 are symmetrically formed on both sides of the welded joint 2 along the center line of the welded joint 2, and the distance between the second flat-bottomed hole 42 and the corresponding heel of the welded joint, as well as between the third flat-bottomed hole 43 and the corresponding heel of the welded joint is less than 25 mm.
[0092] The fourth flat-bottomed hole 44 is located below the weld joint 2, and the straight distance between the fourth flat-bottomed hole 44 and the weld joint 2 is less , where r is the radius of the welded pipe.
[0093] Specifically, the distance from the fourth flat-bottomed hole 44 to the weld joint 2 is the distance of the perpendicular line after drawing a vertical line from the fourth flat-bottomed hole 44 to the weld joint 2.
[0094] Next, in the body 1 of the pipe, a third directional recess 63, a fourth directional recess 64, a fifth directional recess 65 and a sixth directional recess 66 are sequentially made from top to bottom.
[0095] The passing lines of the third directional notch 63, the fourth directional notch 64, the fifth directional notch 65 and the sixth directional notch 66 intersect at the same location of the central axis of the welded pipe.
[0096] The third directional recess 63 and the fourth directional recess 64 are located above the weld joint 2, the distance between the fourth directional recess 64 and the weld joint 2 is less than the straight line distance between the third directional recess 63 and the weld joint 2, and the distance between the third directional recess 63 and the weld joint 2 is less , where r is the radius of the welded pipe.
[0097] The fifth directional recess 65 and the sixth directional recess 66 are located below the weld joint 2, the distance between the fifth directional recess 65 and the weld joint 2 is less than the distance between the sixth directional recess 66 and the weld joint 2, and the straight distance between the sixth directional recess 66 and the weld joint 2 is less , where r is the radius of the welded pipe.
[0098] In particular, from top to bottom in the pipe body 1, a third directional recess 63, a fourth directional recess 64, a fifth directional recess 65 and a sixth directional recess 66 are sequentially made in a counterclockwise direction, with the upper end of the welded pipe being taken as the starting point.
[0099] Next, a third directional recess 63 is formed on the inner wall of the pipe body 1 in the axial direction of the welded pipe, a fourth directional recess 64 is formed on the inner wall of the pipe body 1 in the circumferential direction of the welded pipe, a fifth directional recess 65 is formed on the outer wall of the pipe body 1 in the circumferential direction of the welded pipe, and a sixth directional recess 66 is formed on the outer wall of the welded pipe body 1 in the axial direction of the welded pipe.
[0100] In particular, in this embodiment, taking the weld joint 2 as parallel to the horizontal plane as an example, the third directional recess 63 and the fourth directional recess 64 are located on the inner wall of the welded pipe above the weld joint 2, and this is sufficient to satisfy the condition that the directions of the third directional recess 63 and the fourth directional recess 64 are perpendicular to each other. Similarly, the fifth directional recess 65 and the sixth directional recess 66 are located on the outer wall of the welded pipe below the weld joint 2, and this is sufficient to satisfy the condition that the directions of the fifth directional recess 65 and the sixth directional recess 66 are perpendicular to each other.
[0101] In addition, the diameter of the vertical through holes is 1.6mm, the diameter of the flat-bottomed holes is 6mm, the depth of the flat-bottomed holes is half the wall thickness of the base material of the welded pipe, and the directional recesses are N5 size recesses.
[0102] More specifically, all flat-bottomed holes are formed starting from the outer wall of the welded pipe to the inner wall of the welded pipe. The first flat-bottomed hole 41 located on the surface 3 of the welded pipe is formed before the grooved surface of the welded pipe is processed, that is, after welding the square welded pipe to form a welded pipe, the first flat-bottomed hole 41 is first formed on the grooved surface 3 of the welded pipe, and then the grooved surface 3 is formed at the end of the welded pipe. In this embodiment, the directional recesses are recesses of size N5, having a depth of less than or equal to 5% of T, where T is the wall thickness of the steel pipe, the length of the directional recesses is less than or equal to 25 mm, and the width of the directional recesses is less than or equal to 1 mm.
[0103] In addition, the diameter of the pipe body is between 426mm and 1422mm, the wall thickness of the pipe body is between 6mm and 42mm, the ovality of the pipe body is less than or equal to 2% of the diameter of the welded pipe, and the bevel of the cut end of the welded pipe is less than or equal to 4mm.
[0104] The weld joint reinforcement is less than or equal to 4.5mm, the weld joint width is less than or equal to 40mm, and the weld joint discrepancy is less than or equal to 3mm.
[0105] The inclination angle of the groove surface is less than or equal to 40 degrees, and the width of the blunt edge of this surface is less than or equal to 4 mm.
[0106] Pipe body ovality, also known as ellipticity or out-of-roundness, is the sum of the positive and negative diameter deviations of a welded pipe, i.e., the difference between the maximum outside diameter and the minimum outside diameter measured in the same cross-section of the pipe. The junction between the weld joint surface and the base material is called the weld joint heel, and the distance between the two heels is called the weld joint width. The weld joint misalignment magnitude refers to the magnitude of the weld joint misalignment, i.e., the misalignment caused by weld joint deformation, groove alignment, weld deviation, and other factors during the welding process.
[0107] More specifically, as shown in Fig. 1 and 2, the welded pipe is divided into four sectors of the same shape, which are respectively called the first sector, the second sector, the third sector and the fourth sector in the counterclockwise direction, and then, respectively, the welded joint 2 of the welded pipe is the connecting boundary of the first sector and the second sector. The first flat-bottomed hole 41 and the first vertical through hole 51 are located on the part of the surface 3 corresponding to the first sector, and the first vertical through hole 51 is closer to the welded joint 2 of the welded pipe. The second flat-bottomed hole 42, the third directional recess 63 and the fourth directional recess 64 are located in the part of the pipe body 1 corresponding to the first sector, and the fourth directional recess 64 is closer to the welded joint 2 of the welded pipe.The first directional recess 61 and the second directional recess 62 are located in the part of the surface 3 of the directional recess corresponding to the second sector, and the first directional recess 61 is closer to the welded joint 2 of the welded pipe. The third flat-bottomed hole 43, the fourth flat-bottomed hole 44, the fifth directional recess 65 and the sixth directional recess 66 are located in the part of the pipe body 1 corresponding to the second sector, and the fifth directional recess 65 is closer to the welded joint 2 of the welded pipe. The seventh vertical through hole 57 is located in the part of the pipe body 1 corresponding to the fourth sector, and the distances from the central positions of the third directional recess 63, the fourth directional recess 64, the fifth directional recess 65 and the sixth directional recess 66 to the end of the welded pipe are the same and greater than the distance from the fourth flat-bottomed hole 44 to the end of the welded pipe. Taking into account Fig.1 as an example, the second vertical through hole 52, the third vertical through hole 53, the fourth vertical through hole 54, the second flat-bottomed hole 42 and the third flat-bottomed hole 43 are made sequentially in the order from left to right, and the distance from the third flat-bottomed hole 43 to the end of the welded pipe is greater than the distance from the central position of any of the third directional recess 63, the fourth directional recess 64, the fifth directional recess 65 and the sixth directional recess 66 to the end of the welded pipe.
[0108] In another embodiment, the invention further provides a method for achieving probe position correction in an ultrasonic phased array based on the above-mentioned sample. First, according to the sample proposed in the invention, the approximate positions of the defect detection probes are appropriately set, an ultrasonic phased array is constructed, and at this time, the position of each probe may not be accurate enough. It is necessary to fix the sample on a defect detection station, while the probes are controlled to scan the sample, and defect information in the sample is obtained based on the signals received by the probes. The obtained defect information in the sample is compared with the defect information present in the sample, and a match is assessed.If the information is inconsistent, the position of the corresponding probe must be adjusted, and the above correction steps are repeated until the information detected by each probe matches the defect information present in the sample. The probe is then fixed in its current position to complete the contrast correction of sensitivity to non-stratified defects, sensitivity to stratified defects, and the defect detection range. The sample is removed, the welded pipe to be inspected for defects is fixed at the defect detection station, the probe is controlled to probe the specified welded pipe, and defect information in this welded pipe is obtained based on the signal received by the probe, thus realizing automatic, real-time inspection of the welded pipe end using an ultrasonic phased array.
[0109] To summarize, the invention can realize longitudinal and transverse detection of defects in a welded joint within a range of 300 mm from the end of the pipe, stratified detection of defects in the base material within a range of 300 mm from the end of the pipe and 25 mm on both sides of the welded joint, stratified and non-stratified detection of defects in the base material within a range of 50 mm from the end of the pipe, and automatic detection of defects in the groove surface of the end of the pipe in real time through a certain arrangement pattern of artificial defects and sample construction, has defect detection means to achieve automatic inspection of the end of a welded pipe, reduces the intensity of manual labor and the level of lack of manual identification control, improves production efficiency, improves the quality control of the steel pipe and optimizes product quality,contributes to the development of automatic intelligent pipe end inspection standards and improves the company's brand image and user satisfaction.
[0110] Additional embodiments of the invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the invention are not limited to the specific details in the above embodiments. Within the technical concept of the embodiments of the invention, various simple modifications may be made to their technical solutions within the scope of protection of the embodiments of the invention.
[0111] Furthermore, it should be noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the various possible combination modes in the embodiments of the invention are not separately described.
[0112] Furthermore, various embodiments of the invention can also be arbitrarily combined. As long as they do not violate the spirit of the embodiments of the present invention, they should also be considered as the content disclosed in the embodiments of the invention.
Claims
1. A sample for ultrasonic testing of the end of a welded pipe using a phased array, as well as for comparison and correction of sensitivity during ultrasonic testing, comprising a welded pipe that has the shape of a hollow cylinder, wherein a welded joint (2) is made in the body (1) of the welded pipe and the end of the body (1) of the welded pipe is a grooved surface (3), wherein the sample additionally has: several vertical through holes intended for carrying out a comparative correction of the sensitivity to non-stratified defects during ultrasonic testing of the end of a welded pipe using a phased array, wherein at least one vertical through hole is made on the said grooved surface (3), three vertical through holes are made in the welded joint (2), including a second vertical through hole (52), a third vertical through hole (53) and a fourth vertical through hole (54), wherein the second vertical through hole (52) is made on the central line of the welded joint (2), the third vertical through hole (53) and the fourth vertical through hole (54) are symmetrically made in the heel of the welded joint (2) along the central line of the welded joint (2) and at least three vertical through holes are made in the body (1) of the pipe, several flat-bottomed holes intended for carrying out comparative correction of sensitivity to stratified defects during ultrasonic testing of the end of a welded pipe using a phased array, wherein at least one flat-bottomed hole is made on the said grooved surface (3) and at least three flat-bottomed holes are made in the body (1) of the pipe, and several directional recesses intended for comparison and correction of the range of defect detection during ultrasonic testing of the end of a welded pipe using a phased array, wherein at least two directional recesses are made on the said grooved surface (3) and at least four directional recesses are made in the body (1) of the pipe.
2. The sample according to item 1, in which the first flat-bottomed hole (41), the first vertical through hole (51), the first directional recess (61) and the second directional recess (62) are made on the said grooved surface (3) sequentially from top to bottom, the first flat-bottomed hole (41) and the first vertical through hole (51) are located above the welded joint (2), the distance between the first vertical through hole (51) and the welded joint (2) is less than the distance between the first flat-bottomed hole (41) and the welded joint (2) and the distance between the first flat-bottomed hole (41) and the welded joint (2) is less , where r is the radius of the welded pipe, and the first directional recess (61) and the second directional recess (62) are located below the welded joint (2), the distance between the first directional recess (61) and the welded joint (2) is less than the distance between the second directional recess (62) and the welded joint (2) and the distance between the second directional recess (62) and the welded joint (2) is less , where r is the radius of the welded pipe.
3. A sample according to item 2, in which the lines of passage of the first directional recess (61) and the second directional recess (62) intersect on the central axis of the welded pipe, wherein the first directional recess (61) is made longitudinally on the said grooved surface (3), and the second directional recess (62) is made transversely on the said grooved surface (3).
4. A sample according to item 1, in which in the body (1) of the pipe, a fifth vertical through hole (55), a sixth vertical through hole (56) and a seventh vertical through hole (57) are made sequentially from top to bottom, the lines of passage of the fifth vertical through hole (55), the sixth vertical through hole (56) and the seventh vertical through hole (57) intersect at the same place of the central axis of the welded pipe, the position of the sixth vertical through hole (56) is opposite to the position of the welded joint (2), the fifth vertical through hole (55) is located above the sixth vertical through hole (56), and the internal angle between the fifth vertical through hole (55) and the sixth vertical through hole (56) is 90 degrees, and the seventh vertical through hole (57) is located below the sixth vertical through hole (56), and the internal angle between the seventh vertical through hole (57) and the sixth vertical through hole (56) is 60 degrees.
5. A sample according to item 1, in which a second flat-bottomed hole (42), a third flat-bottomed hole (43) and a fourth flat-bottomed hole (44) are made in the body (1) of the pipe, the second flat-bottomed hole (42) and the third flat-bottomed hole (43) are symmetrically formed on both sides of the welded joint (2) along its center line, and the distance between the second flat-bottomed hole (42) and the corresponding heel of the welded joint, as well as between the third flat-bottomed hole (43) and the corresponding heel of the welded joint is less than 25 mm, and the fourth flat-bottomed hole (44) is located below the welded joint (2), and the distance between the fourth flat-bottomed hole (44) and the welded joint (2) is less , where r is the radius of the welded pipe.
6. A sample according to item 1, in which a third directional recess (63), a fourth directional recess (64), a fifth directional recess (65) and a sixth directional recess (66) are made sequentially from top to bottom in the body of the pipe (1), the lines of passage of the third directional notch (63), the fourth directional notch (64), the fifth directional notch (65) and the sixth directional notch (66) intersect on the central axis of the welded pipe, the third directional recess (63) and the fourth directional recess (64) are located above the welded joint (2), the distance between the fourth directional recess (64) and the welded joint (2) is less than the distance between the third directional recess (63) and the welded joint (2) and the distance between the third directional recess (63) and the welded joint (2) is less , where r is the radius of the welded pipe, and the fifth directional recess (65) and the sixth directional recess (66) are located below the welded joint (2), the distance between the fifth directional recess (65) and the welded joint (2) is less than the distance between the sixth directional recess (66) and the welded joint (2) and the distance between the sixth directional recess (66) and the welded joint (2) is less , where r is the radius of the welded pipe.
7. The sample according to item 6, in which the third directional recess (63) is made on the inner wall of the pipe body (1) in the axial direction of the welded pipe, the fourth directional recess (64) is made on the inner wall of the pipe body (1) in the circumferential direction of the welded pipe, the fifth directional recess (65) is made on the outer wall of the pipe body (1) in the circumferential direction of the welded pipe and the sixth directional recess (66) is made on the outer wall of the welded pipe body (1) in the axial direction of the welded pipe.
8. A sample according to claim 1, wherein the depth of the flat-bottomed holes is half the wall thickness of the base material of the welded pipe, and the directional recesses are N5 recesses.
9. A sample according to item 1, wherein the diameter of the pipe body is from 426 to 1422 mm, the wall thickness of the pipe body is from 6 to 42 mm, the ovality of the pipe body is less than or equal to 2% of the diameter of the welded pipe and the bevel of the end of the welded pipe is less than or equal to 4 mm.
10. A sample according to claim 1, wherein the weld joint reinforcement is less than or equal to 4.5 mm, the weld joint width is less than or equal to 40 mm, and the weld joint mismatch is less than or equal to 3 mm, while the inclination angle of the grooved surface is less than or equal to 40 degrees, and the width of the blunt edge of this surface is less than or equal to 4 mm.