Contrast standard sample for ultrasonic phased array detection and correction at the end of a welded pipe

Abstract

The present invention relates to the technical field of pipe end detection of welded pipes. A contrast standard sample for ultrasonic phased array detection and correction at a pipe end of a welded pipe is provided. The welded pipe has the shape of a hollow cylinder. A weld seam 2 is formed in a pipe body 1 of the welded pipe, and the end is a grooved surface 3.The welded pipe further comprises: a plurality of vertical through holes 51, 52, 53, 54, 55, 56, 57 formed in the groove surface 3, the weld seam 2, and the pipe body 1 and configured to enable contrast correction of the non-layered defect sensitivity during ultrasonic phased array detection at the pipe end of the welded pipe; a plurality of flat-bottomed holes 41, 42, 43, 44 formed in the groove surface 3 and the pipe body 1 and configured to enable contrast correction of the layered defect sensitivity during ultrasonic phased array detection at the pipe end of the welded pipe; and a plurality of notched grooves 61, 62, 63, 64, 65, 66 formed in the groove surface 3 and the pipe body 1 and configured to enable contrast correction of a detection area during ultrasonic phased array detection at the pipe end of the welded pipe.The contrast standard sample can achieve the full coverage of the correction of internal and external defects in the weld seam of the pipe end of the welded pipe and other areas, thereby providing a detection basis for automatic detection and correction at the pipe end of the welded pipe.

Description

Field of the InventionThe present disclosure relates to the technical field of tube end detection of welded tubes, and more particularly to a contrast standard sample for ultrasonic phased array detection and correction at a tube end of a welded tube.BACKGROUND OF THE INVENTIONIn the production of welded pipes, non-destructive detection is required, which mainly includes ultrasonic detection, beam detection, phased array ultrasonic, DR beam detection, and magnetic powder detection, wherein ultrasonic detection, beam detection, phased array ultrasonic, and DR beam detection are automated basically in combination with manual detection, but the pipe ends of the welded pipes are manually detected basically. Moreover, in the nondestructive detection of welded pipes on a construction site, the following methods are often used: ultrasonic detection, beam detection, phased array ultrasonic, and TOFD detection technology, but manual detection is generally performed due to environmental effects on the construction site.With the improvement of the detection standards, higher demands have also been made on the detection of welded pipe welds, e.g. in terms of the detection positions and the fault categories. The initial automatic detection of welded pipes mainly focuses on the detection of the weld of the pipe body of a steel pipe and the base materials on both sides of the weld, and the precise detection of the weld of a pipe end of the welded pipe, a base material of the pipe end, and a groove surface of the pipe end is performed manually, which is experience and has a certain detection blind area. Therefore, the detection of welds at pipe ends of welded pipes, heat affected zones of the welds at the pipe ends, base materials at the pipe ends, and groove surfaces at the pipe ends is currently not sufficiently complete and precise in the welded pipe industry, which may lead to lack of detection.SUMMARY OF THE INVENTIONAn object of embodiments of the present disclosure is to provide a contrast standard sample for ultrasonic phased array detection and correction at a pipe end of a welded pipe, which is used to solve the above problem. The detection of welds of pipe ends of welded pipes, heat affected zones of the welds of the pipe ends, base materials of the pipe ends and groove surfaces of the pipe ends in the welded pipe industry is not sufficiently complete and precise, which tends to be missing detection.To achieve the above object, an embodiment of the present disclosure provides a contrast standard sample for ultrasonic phased array detection and correction at a pipe end of a welded pipe including the welded pipe. The welded tube is in the form of a hollow cylinder. A weld is formed in a tubular body, and an end of the tubular body is a groove surface; and the contrast standard sample further includes:a plurality of vertical through holes configured to allow contrast correction of non-layered defect sensitivity during ultrasonic phased array detection at the pipe end of the welded pipe, wherein at least one vertical through hole is formed in the groove surface, at least three vertical through holes are formed in the weld, and at least three vertical through holes are formed in the pipe body;a plurality of flat bottom holes configured to allow contrast correction of layered defect sensitivity during ultrasonic phased array detection at the pipe end of the welded pipe, wherein at least one flat bottom hole is formed in the groove surface and at least three flat bottom holes are formed in the pipe body; anda plurality of notch grooves configured to enable contrast correction of a detection region during ultrasonic phased array detection at the pipe end of the welded pipe, wherein at least two notch grooves are formed in the groove surface and at least four notch grooves are formed in the pipe body.Optionally, a first flat bottom hole, a first vertical through hole, a first notch groove, and a second notch groove are successively machined into the groove surface from top to bottom; the first flat bottom hole and the first vertical through hole are disposed above the weld, a distance between the first vertical through hole and the weld is less than a distance between the first flat bottom hole and the weld, the distance between the first flat bottom hole and the weld is less than and r is a radius of the welded pipe; and the first notch groove and the second notch groove are located below the weld, a distance between the first notch groove and the weld is less than a distance between the second notch groove and the weld, the distance between the second notch groove and the weld is less than and r is the radius of the welded pipe.Optionally, the extension lines of the first notch groove and the second notch groove intersect on a central axis of the welded pipe; the first notch groove is longitudinally formed in the groove surface; and the second notch groove is transversely formed in the groove surface.Optionally, a second vertical through hole, a third vertical through hole, and a fourth vertical through hole are formed in the weld; and the second vertical through hole is formed in a center line of the weld, and the third vertical through hole and the fourth vertical through hole are symmetrically formed in a weld of the weld along the center line of the weld.Optionally, a fifth vertical through hole, a sixth vertical through hole, and a seventh vertical through hole are successively inserted into the tubular body from top to bottom;The extension lines of the fifth vertical through hole, the sixth vertical through hole, and the seventh vertical through hole intersect at the same position of a central axis of the welded pipe; the position of the sixth vertical through hole is opposite to that of the weld; the fifth vertical through hole is disposed above the sixth vertical through hole, and an included angle between the fifth vertical through hole and the sixth vertical through hole is 90 degrees; and the seventh vertical through hole is disposed below the sixth vertical through hole, and an included angle between the seventh vertical through hole and the sixth vertical through hole is 60 degrees.Optionally, a second flat bottom hole, a third flat bottom hole, and a fourth flat bottom hole may be inserted into the tubular body; the second flat bottom hole and the third flat bottom hole are formed symmetrically in two sides of the weld along the center line of the weld, and the space between the second flat bottom hole and a corresponding weld and between the third flat bottom hole and the corresponding weld is less than 25 mm; and the fourth flat bottom hole is located below the weld, the distance between the fourth flat bottom hole and the weld is less than and r is a radius of the welded tube.Optionally, third, fourth, fifth, and sixth kerf grooves are successively machined into the pipe body from top to bottom; the extension lines of the third kerf groove, the fourth kerf groove, the fifth kerf groove, and the sixth kerf groove intersect on a central axis of the welded pipe; the third kerf groove and the fourth kerf groove are disposed above the weld, a distance between the fourth kerf groove and the weld is smaller than a distance between the third kerf groove and the weld, the distance between the third kerf groove and the weld is smaller than and r is a radius of the welded pipe; and the fifth notch groove and the sixth notch groove are located below the weld, a distance between the fifth notch groove and the weld is smaller than a distance between the sixth notch groove and the weld, the distance between the sixth notch groove and the weld is smaller than and r is the radius of the welded pipe.Optionally, the third notch groove is formed in an inner wall of the tubular body in an axial direction of the welded tube; the fourth notch groove is formed in the inner wall of the tubular body in a circumferential direction of the welded tube; the fifth notch groove is formed in an outer wall of the tubular body in the circumferential direction of the welded tube; and the sixth notch groove is formed in the outer wall of the tubular body in the axial direction of the welded tube. Optionally, the depth of the flat bottom holes is half of the wall thickness of the base material of the welded pipe, and the kerf grooves are N5 kerf grooves.Optionally, the diameter of the tubular body is between 426 mm and 1422 mm, the wall thickness of the tubular body is between 6 mm and 42 mm, the circularity of the tubular body is less than or equal to 2% of the diameter of the welded tube, and the cut slope of the tube end of the welded tube is less than or equal to 4 mm; the weld strength of the weld is less than or equal to 4.5 mm, the width of the weld is less than or equal to 40 mm, and the inability of the weld is less than or equal to 3 mm; and a groove angle of the groove surface is less than or equal to 40 degrees, and an obtuse edge of the groove surface is less than or equal to 4 mm.This technical solution, in which the vertical through holes, the flat bottom holes, and the notch grooves are precisely formed in the welded pipe, constitutes the contrast standard sample for the online ultrasonic phased array detection and correction at the pipe end of the welded pipe, thereby achieving correction of the position and the angle of an ultrasonic phased array arrangement in the process of the online ultrasonic phased array detection at the pipe end of the welded pipe, thereby making the online ultrasonic phased array detection more comprehensive, improving the precision of the detection, and avoiding lack of detection.Other features and advantages of the embodiments of the present disclosure will be described in detail in the following detailed description.Brief Description of the DrawingsThe accompanying drawings are provided to further understand the embodiments of the present disclosure, form a part of the specification, and serve to explain the embodiments of the present disclosure together with the following detailed description, but do not constitute a limitation on the embodiments of the present disclosure. The figures attached show: FIG. 1 is a schematic structural diagram of a contrast standard sample for ultrasonic phased array detection and correction at a pipe end of a welded pipe provided by the present disclosure. FIG. 2 is a schematic cross-sectional diagram of a contrast standard sample for ultrasonic phased array detection and correction at a pipe end of a welded pipe in accordance with the present disclosure.Description of the Identification Numbers1 Tubular body; 2 Weld; 3 Groove surface; 41 First flat bottom hole; 42 Second flat bottom hole; 43 Third flat bottom hole; 44 Fourth flat bottom hole; 51 First vertical through hole; 52 Second vertical through hole; 53 Third vertical through hole; 54 Fourth vertical through hole; 55 Fifth vertical through hole; 56 Sixth vertical through hole; 57 Seventh vertical through hole; 61 First notch groove; 62 Second notch groove; 63 Third notch groove; 64 Fourth notch groove; 65 Fifth notch groove; 66 Sixth notch groove.Detailed Description of EmbodimentsThe detailed description of embodiments of the present disclosure will be described in detail below in combination with the accompanying drawings. It should be understood that the detailed description described herein is only intended to illustrate and explain the embodiments of the present disclosure, and is not intended to limit the embodiments of the present disclosure.In the embodiments of the present disclosure, alignment terms such as "upper, lower, left, right" generally refer to an alignment or positional relationship resulting from the accompanying drawings or an alignment or positional relationship in which a product of the present disclosure is usually arranged in use, unless otherwise indicated.The terms "first", "second" and "third" are used only for distinguishing descriptions and should not be understood as indicating a relative meaning.The terms "parallel", "rectangular", etc. do not mean that the parts must be absolutely parallel or rectangular, but can be slightly inclined. For example, "parallel" simply means that the direction is more parallel compared to "perpendicular", and does not mean that the structure must be absolutely parallel, but can be slightly inclined.The terms "horizontal", "vertical", "overhanging", etc. do not mean that parts must be absolutely horizontal, vertical or overhanging, but may be slightly inclined. For example, "horizontal" simply means that the direction is rather horizontal compared to "vertical", and does not mean that the structure must be entirely horizontal, but may be slightly inclined.Moreover, the terms "about" and "basically" are intended to indicate that the relevant content does not require absolute precision, but may have some variation. For example, "approximately equal" means not only absolute equality, because in an actual production and operation process, it is difficult to achieve absolute "equality", and there is generally some variation. Therefore, "approximately equal" includes, besides the absolute equality, also the above-mentioned case in which a certain deviation is present. Unless otherwise indicated, the terms "about", "basically", etc. have a similar meaning to the above in other cases.In describing the present disclosure, it is further noted that the terms "disposed", "mounted", "connected", and "connection" are to be understood in a broad sense, for example, as a fixed connection, a detachable connection, or an integral connection; and as a direct connection, an indirect connection via an intermediate medium, and communication within two elements, unless expressly stated and limited. Those skilled in the art can understand the specific meanings of the above terms in the present disclosure under certain circumstances.FIG. 1 is a schematic structural diagram of a contrast standard sample for ultrasonic phased array detection and correction at a pipe end of a welded pipe provided by the present disclosure. FIG. 2 is a schematic cross-sectional diagram of a contrast standard sample for ultrasonic phased array detection and correction at a pipe end of a welded pipe provided by the present disclosure.As shown in FIGS. 1 to 2, this embodiment provides a contrast standard sample for ultrasonic phased array detection and correction at a pipe end of a welded pipe including the welded pipe, the welded pipe being in the form of a hollow cylinder, a weld 2 is formed in a pipe body 1 of the welded pipe, and an end of the pipe body 1 of the welded pipe is a groove surface 3. The contrast standard sample also comprises:a plurality of vertical through holes configured to allow contrast correction of non-layered defect sensitivity during ultrasonic phased array detection at the pipe end of the welded pipe, at least one vertical through hole being formed in the groove surface 3, at least three vertical through holes being formed in the weld 2, and at least three vertical through holes being formed in the pipe body 1;a plurality of flat bottom holes configured to allow contrast correction of layered defect sensitivity during ultrasonic phased array detection at the pipe end of the welded pipe, at least one flat bottom hole being formed in the groove surface 3 and at least three flat bottom holes being formed in the pipe body 1; and a plurality of notch grooves configured to allow contrast correction of a detection region during ultrasonic phased array detection at the pipe end of the welded pipe, at least two notch grooves being formed in the groove surface 3 and at least four notch grooves being formed in the pipe body 1.Particularly in this implementation, an ultrasonic phased array is a combination of ultrasonic probe wafers, a plurality of piezoelectric wafers distributed and arranged according to a certain regularity, then each wafer is excited one by one after a predetermined delay time, and ultrasound from all wafers emits an entire wavefront that can effectively control a shape and direction of an emitted ultrasonic beam (the wavefront) to be able to achieve ultrasonic beam scanning, deflection, and focusing.Further, in the groove surface 3, a first flat bottom hole 41, a first vertical through hole 51, a first notch groove 61, and a second notch groove 62 are sequentially formed from top to bottom; the first flat bottom hole 41 and the first vertical through hole 51 are disposed above the weld 2, a distance between the first vertical through hole 51 and the weld 2 is smaller than a straight distance between the first flat bottom hole 41 and the weld 2, the distance between the first flat bottom hole 41 and the weld 2 is smaller than and r is a radius of the welded pipe; and the first notch groove 61 and the second notch groove 62 are disposed below the weld 2, a distance between the first notch groove 61 and the weld 2 is smaller than a distance between the second notch groove 62 and the weld 2, the rectilinear distance between the second notch groove 62 and the weld 2 is smaller than and r is the radius of the welded pipe.Specifically, the distance from the first vertical through hole 51 to the weld 2 is a distance of a vertical line after a vertical line is drawn from the first vertical through hole 51 to the weld 2. The straight line distance from the first flat bottom hole 41 to the weld 2 is a distance of a vertical line after a vertical line is drawn from the first flat bottom hole 41 to the weld 2. The distance from the first notch groove 61 to the weld 2 is a distance of a vertical line after a vertical line is drawn from the first notch groove 61 to the weld 2. The distance from the second notch groove 62 to the weld 2 is a distance of a vertical line after a vertical line is drawn from the second notch groove 62 to the weld 2. From top to bottom, the first flat bottom hole 41, the first vertical through hole 51, the first notch groove 61 and the second notch groove 62 are successively inserted in the groove surface 3 in the counterclockwise direction with the top end of the welded pipe serving as the starting point.In addition, the extension lines of the first notch groove 61 and the second notch groove 62 intersect on a central axis of the welded pipe.The first notch groove 61 is formed in the groove surface 3 in the longitudinal direction. The second notch groove 62 is formed in the groove surface 3 in the transverse direction.Specifically, in this embodiment, an opening direction of the first notch groove 61 relative to the central axis of the welded pipe is perpendicular to the central axis of the welded pipe and an opening direction of the second notch groove 62 is parallel to the central axis of the welded pipe, so that the opening directions of the first notch groove 61 and the second notch groove 62 are perpendicular to each other. At the same time, both the first notch groove 61 and the second notch groove 62 face the central axis of the welded pipe, and the extension lines of both intersect at the same point of the central axis of the welded pipe. In another embodiment, the first notch groove 61 may be formed in the groove surface 3 in the transverse direction and the second notch groove 62 may be formed in the groove surface 3 longitudinally, wherein it is only to be noted that the opening directions of the first notch groove 61 and the second notch groove 62 are perpendicular to each other.In addition, in the weld 2, a second vertical through hole 52, a third vertical through hole 53, and a fourth vertical through hole 54 are formed.The second vertical through hole 52 is formed in a center line of the weld 2, and the third vertical through hole 53 and the fourth vertical through hole 54 are symmetrically formed in a welding location of the weld 2 along the center line of the weld 2. In addition, in the tubular body 1, a fifth vertical through hole 55, a sixth vertical through hole 56, and a seventh vertical through hole 57 are sequentially formed from top to bottom.The extension lines of the fifth vertical through hole 55, the sixth vertical through hole 56, and the seventh vertical through hole 57 intersect in the central axis of the welded pipe.The position of the sixth vertical through hole 56 is opposite to that of the weld 2.The fifth vertical through hole 55 is located above the sixth vertical through hole 56, and the angle between the fifth vertical through hole 55 and the sixth vertical through hole 56 is 90 degrees.The seventh vertical through hole 57 is located below the sixth vertical through hole 56, and the angle between the seventh vertical through hole 57 and the sixth vertical through hole 56 is 60 degrees.Specifically, from top to bottom, the fifth vertical through hole 55, the sixth vertical through hole 56, and the seventh vertical through hole 57 are successively inserted in the pipe body 1 in the clockwise direction, taking the top end of the welded pipe as a starting point, and the extension lines 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. In addition, a second flat bottom hole 42, a third flat bottom hole 43, and a fourth flat bottom hole 44 are formed in the tubular body 1.The second flat bottom hole 42 and the third flat bottom hole 43 are formed symmetrically in two sides of the weld 2 along the center line of the weld 2, and the space between the second flat bottom hole 42 and a corresponding weld location and between the third flat bottom hole 43 and the corresponding weld location is less than 25 mm.The fourth flat bottom hole 44 is located below the weld 2, the straight line distance between the fourth flat bottom hole 44 and the weld 2 is smaller than and r is the radius of the welded pipe.Specifically, the distance from the fourth flat bottom hole 44 to the weld 2 is a distance of a vertical line after a vertical line is drawn from the fourth flat bottom hole 44 to the weld 2.In addition, in the tubular body 1, a third notch groove 63, a fourth notch groove 64, a fifth notch groove 65, and a sixth notch groove 66 are sequentially formed from top to bottom.The extension lines of the third notch groove 63, the fourth notch groove 64, the fifth notch groove 65, and the sixth notch groove 66 intersect at the same position of the central axis of the welded pipe.The third notch groove 63 and the fourth notch groove 64 are located above the weld 2, a distance between the fourth notch groove 64 and the weld 2 is smaller than a straight distance between the third notch groove 63 and the weld 2, the distance between the third notch groove 63 and the weld 2 is smaller than and r is the radius of the welded pipe.The fifth notch groove 65 and the sixth notch groove 66 are located below the weld 2, the distance between the fifth notch groove 65 and the weld 2 is smaller than the distance between the sixth notch groove 66 and the weld 2, the rectilinear distance between the sixth notch groove 66 and the weld 2 is smaller than and r is the radius of the welded pipe. Specifically, from top to bottom, the third notch groove 63, the fourth notch groove 64, the fifth notch groove 65, and the sixth notch groove 66 are successively formed in the tubular body 1 in the counterclockwise direction with the top end of the welded tube serving as a starting point.Further, the third notch groove 63 is formed in an inner wall of the tube body 1 in an axial direction of the welded tube; the fourth notch groove 64 is formed in the inner wall of the tube body 1 in a circumferential direction of the welded tube; the fifth notch groove 65 is formed in an outer wall of the tube body 1 in the circumferential direction of the welded tube; and the sixth notch groove 66 is formed in the outer wall of the tube body 1 of the welded tube in the axial direction of the welded tube.For example, when the weld 2 is parallel to a horizontal plane, the third notch groove 63 and the fourth notch groove 64 are located on the inner wall of the welded pipe above the weld 2, and it is sufficient that the groove directions of the third notch groove 63 and the fourth notch groove 64 are perpendicular to each other. Similarly, the fifth notch groove 65 and the sixth notch groove 66 are located on the outer wall of the welded pipe below the weld 2, and it is sufficient that the groove directions of the fifth notch groove 65 and the sixth notch groove 66 are perpendicular to each other.Further, the diameter of the vertical through holes is 1.6 mm, the diameter of the flat bottom holes is 6 mm, and the depth of the flat bottom holes is half of the wall thickness of the base material of the welded pipe, and the notch grooves are N5 notch grooves.More specifically, all the flat bottom holes are formed from the outer wall of the welded pipe toward the inner wall of the welded pipe. The first flat bottom hole 41 in the groove surface 3 of the welded pipe is formed before the machining of the groove surface of the welded pipe, i.e., after a square welded pipe is welded to form the welded pipe, the first flat bottom hole 41 is first opened in the groove surface 3 of the welded pipe, and then the groove surface 3 is formed at the end of the welded pipe. In this embodiment, the notch grooves are N5 notch grooves having a depth of less than or equal to 5% T, where T is the wall thickness of a steel pipe, the length of the notch grooves is less than or equal to 25 mm, and the width of the notch grooves is less than or equal to 1 mm.Further, the diameter of the tubular body is between 426 mm and 1422 mm, the wall thickness of the tubular body is between 6 mm and 42 mm, the circularity of the tubular body is less than or equal to 2% of the diameter of the welded tube, and the cut slope of the tube end of the welded tube is less than or equal to 4 mm.The weld reinforcement of the weld is less than or equal to 4.5 mm, the width of the weld is less than or equal to 40 mm, and the inability of the weld is less than or equal to 3 mm. The groove angle of the groove surface is less than or equal to 40 degrees, and the obtuse edge of the groove surface is less than or equal to 4 mm.The run-out of the tubular body is also referred to as an ellipticity or run-out and represents a sum of positive and negative deviations of the diameter of the welded tube, i.e. a difference between a maximum outer diameter and a minimum outer diameter measured on the same cross section of the tube. A transition between a surface of the weld and the base material is referred to as a weld, and the distance between two welds is referred to as a width of the weld. The extent of inability of the weld refers to the extent of inability of the weld, i.e., misalignment caused by deformation of a weld connector, the degree of groove alignment, a weld offset, and other factors in a welding operation.As shown in FIGS. 1 to 2, the welded pipe is divided into four uniform sectors referred to as a first sector, a second sector, a third sector, and a fourth sector, respectively, in the counterclockwise direction, and the welded joint 2 of the welded pipe is a joint boundary between the first sector and the second sector. The first flat bottom hole 41 and the first vertical through hole 51 are located in a part of the groove surface 3 corresponding to the first sector, and the first vertical through hole 51 is located closer to the welded joint 2 of the welded pipe. The second flat bottom hole 42, the third notch groove 63, and the fourth notch groove 64 are located in a part of the pipe body 1 corresponding to the first sector, and the fourth notch groove 64 is located closer to the welded joint 2 of the welded pipe. The first notch groove 61 and the second notch groove 62 are located in a part of the groove surface 3 corresponding to the second sector, and the first notch groove 61 is located closer to the welded pipe weld 2. The third flat bottom hole 43, the fourth flat bottom hole 44, the fifth notch groove 65, and the sixth notch groove 66 are located in a part of the pipe body 1 corresponding to the second sector, and the fifth notch groove 65 is located closer to the welded pipe weld seam 2. The seventh vertical through hole 57 is located in a part of the pipe body 1 corresponding to the fourth sector, and the distances from the center positions of the third notch groove 63, the fourth notch groove 64, the fifth notch groove 65, and the sixth notch groove 66 to the end of the welded pipe are equal to and larger than the distance from the fourth flat bottom hole 44 to the end of the welded pipe. Taking 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 bottom hole 42, and the third flat bottom hole 43 are sequentially formed in the order from left to right, and the distance from the third flat bottom hole 43 to the end of the welded pipe is larger than the distance from the center position of one of the third notch groove 63, the fourth notch groove 64, the fifth notch groove 65, and the sixth notch groove 66 to the end of the welded pipe.In another implementation, the present disclosure further provides a method for achieving correction of an arrangement position of a probe in an ultrasonic phased array based on the above contrast standard sample. First, according to the contrast standard sample provided by the present disclosure, approximate positions of detection probes are set accordingly, the ultrasonic phase arrangement is constructed, at which time a position of each probe may not be precise enough, it is necessary to attach the contrast standard sample to a detection station, and the probes are controlled to scan the contrast standard sample, and error information of the contrast standard sample is obtained based on the signals received from the probes. The obtained error information in the contrast standard sample is compared with the error information present in the contrast standard sample, and it is judged whether it is consistent. If the information does not match, the position of the corresponding probe needs to be adjusted, and the above correction steps are repeated again until it is determined that the information acquired from each probe matches the error information present in the contrast standard sample, and then the probe is fixed at a current position to complete the contrast correction of the non-layered defect sensitivity, the layered defect sensitivity, and the detection region. The contrast standard sample is removed, the welded pipe to be detected is attached to the detection station, the probe is controlled to check the welded pipe to be detected, and the failure information in the welded pipe to be detected is obtained based on a signal received from the probe, thereby realizing on-line ultrasonic phased array detection at the pipe end of the welded pipe. In summary, the present disclosure enables longitudinal and lateral detection of the weld in a range of 300 mm of the pipe end of the welded pipe, layered detection of the base material in a range of 300 mm of the pipe end and 25 mm of the both sides of the weld, layered and non-layered detection of the base material in a range of 50 mm of the pipe end, and on-line automatic detection of the groove surface of the pipe end by the arrangement of artificial defects and the construction of the contrast standard sample, and includes detection means for achieving automatic detection of the pipe end of the welded pipe, reducing manual work intensity and a lack of detection rate of manual identification, improving production efficiency, improving quality control of a steel pipe, and optimizing quality of products, This contributes to the development of automatic intelligent detection standards of pipe ends of welded pipes, and improves trade name of a company and user satisfaction.The optional implementations of the present disclosure are described above in detail in combination with the accompanying drawings. However, the embodiments of the present disclosure are not limited to the specific details in the above embodiments. Within the technical concept of the embodiments of the present disclosure, a plurality of simple changes may be made to the technical solutions of the embodiments of the present disclosure, and these simple changes are included in the scope of the embodiments of the present disclosure.Moreover, it should be noted that the specific technical features described in the above embodiments may be combined in any suitable manner without being conflicting. In order to avoid unnecessary repetition, various possible combination possibilities in the embodiments of the present disclosure will not be described separately.Moreover, various embodiments of the present disclosure may be combined as desired. As long as they do not violate the spirit of the embodiments of the present disclosure, they should also be regarded as the contents disclosed in the embodiments of the present disclosure.

Claims

A contrast standard sample for ultrasonic phased array detection and correction at a pipe end of a welded pipe, comprising the welded pipe, wherein the welded pipe is in the form of a hollow cylinder, a weld (2) is formed in a pipe body (1) of the welded pipe, and an end of the pipe body (1) of the welded pipe is a groove surface (3); The contrast standard sample further includes: a plurality of vertical through holes configured to allow contrast correction of non-layered defect sensitivity during ultrasonic phased array detection at the pipe end of the welded pipe, at least one vertical through hole being formed in the groove surface (3), three vertical through holes being formed in the weld (2) including a second vertical through hole (52), a third vertical through hole (53), and a fourth vertical through hole (54), the second vertical through hole (52) being formed in a center line of the weld (2), the third vertical through hole (53), and the fourth vertical through hole (54) being formed symmetrically in a weld location of the weld (2) along the center line of the weld (2), and at least three vertical through holes being formed in the pipe body (1); a plurality of flat bottom holes configured to allow contrast correction of layered defect sensitivity during ultrasonic phased array detection at the pipe end of the welded pipe, at least one flat bottom hole being formed in the groove surface (3) and at least three flat bottom holes being formed in the pipe body (1); and a plurality of notch grooves configured to allow contrast correction of a detection area during ultrasonic phased array detection at the pipe end of the welded pipe, at least two notch grooves being formed in the groove surface (3) and at least four notch grooves being formed in the pipe body (1).The contrast standard sample for ultrasonic phased array detection and correction at the pipe end of the welded pipe according to claim 1, wherein in the groove surface (3), a first flat bottom hole (41), a first vertical through hole (51), a first notch groove (61), and a second notch groove (62) are sequentially formed from top to bottom; the first flat bottom hole (41) and the first vertical through hole (51) are disposed above the weld (2), a distance between the first vertical through hole (51) and the weld (2) is smaller than a distance between the first flat bottom hole (41) and the weld (2), the distance between the first flat bottom hole (41) and the weld (2) is smaller than 2 r, and r is a radius of the welded pipe; and the first notch groove (61) and the second notch groove (62) are arranged below the weld (2), a distance between the first notch groove (61) and the weld (2) is smaller than a distance between the second notch groove (62) and the weld (2), the distance between the second notch groove (62) and the weld (2) is smaller than 2 r and r is the radius of the welded pipe.The contrast standard sample for ultrasonic phased array detection and correction at the pipe end of the welded pipe according to claim 2, wherein the extension lines of the first notch groove (61) and the second notch groove (62) intersect on a central axis of the welded pipe; the first notch groove (61) is formed in the groove surface (3) in the longitudinal direction; and the second notch groove (62) is formed in the groove surface (3) in the transverse direction.The contrast standard sample for ultrasonic phased array detection and correction at the pipe end of the welded pipe according to claim 1, wherein a fifth vertical through hole (55), a sixth vertical through hole (56), and a seventh vertical through hole (57) are sequentially formed from top to bottom in the pipe body (1); the extension lines of the fifth vertical through hole (55), the sixth vertical through hole (56), and the seventh vertical through hole (57) intersect at the same position of a central axis of the welded pipe; a position of the sixth vertical through hole (56) is opposite to that of the weld (2); the fifth vertical through hole (55) is disposed over the sixth vertical through hole (56); and an included 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 disposed below the sixth vertical through hole (56), and an included angle between the seventh vertical through hole (57) and the sixth vertical through hole (56) is 60 degrees.The contrast standard sample for ultrasonic phased array detection and correction at the pipe end of the welded pipe according to claim 1, wherein in the pipe body (1), a second flat bottom hole (42), a third flat bottom hole (43), and a fourth flat bottom hole (44) are formed; the second flat bottom hole (42) and the third flat bottom hole (43) are formed symmetrically in two sides of the weld (2) along the center line of the weld (2), and the space between the second flat bottom hole (42) and a corresponding weld and between the third flat bottom hole (43) and the corresponding weld is less than 25 mm; and the fourth flat bottom hole (44) is located below the weld (2), a distance between the fourth flat bottom hole (44) and the weld (2) is less than 2 r and r is a radius of the welded pipe.The contrast standard sample for ultrasonic phased array detection and correction at the pipe end of the welded pipe according to claim 1, wherein a third notch groove (63), a fourth notch groove (64), a fifth notch groove (65), and a sixth notch groove (66) are formed in the pipe body (1) sequentially from top to bottom; the extension lines of the third notch groove (63), the fourth notch groove (64), the fifth notch groove (65), and the sixth notch groove (66) intersect on a central axis of the welded pipe; the third notch groove (63) and the fourth notch groove (64) are arranged above the weld seam (2), a distance between the fourth notch groove (64) and the weld seam (2) is smaller than a distance between the third notch groove (63) and the weld seam (2), the distance between the third notch groove (63) and the weld seam (2) is smaller than 2 r, and r is a radius of the welded pipe; and the fifth notch groove (65) and the sixth notch groove (66) are arranged below the weld (2), a distance between the fifth notch groove (65) and the weld (2) is smaller than a distance between the sixth notch groove (66) and the weld (2), the distance between the sixth notch groove (66) and the weld (2) is smaller than 2 r and r is the radius of the welded pipe.The contrast standard sample for ultrasonic phased array detection and correction at the pipe end of the welded pipe according to claim 6, wherein the third notch groove (63) is formed in an inner wall of the pipe body (1) in an axial direction of the welded pipe; the fourth notch groove (64) is formed in the inner wall of the pipe body (1) in a circumferential direction of the welded pipe; the fifth notch groove (65) is formed in an outer wall of the pipe body (1) in the circumferential direction of the welded pipe; and the sixth notch groove (66) is formed in the outer wall of the pipe body (1) of the welded pipe in the axial direction of the welded pipe.The contrast standard sample for ultrasonic phased array detection and correction at the pipe end of the welded pipe according to claim 1, wherein the depth of the flat bottom holes is half of the wall thickness of the base material of the welded pipe, and the notch grooves are N5 notch grooves.The contrast standard sample for ultrasonic phased array detection and correction at the pipe end of the welded pipe according to claim 1, wherein a diameter of the pipe body is 426 mm to 1422 mm, a wall thickness of the pipe body is 6 mm to 42 mm, the circularity of the pipe body is less than or equal to 2% of a diameter of the welded pipe, and a cut slope of the pipe end of the welded pipe is less than or equal to 4 mm.The contrast standard sample for ultrasonic phased array detection and correction at the pipe end of the welded pipe according to claim 1, wherein the welding gain of the weld is less than or equal to 4.5 mm, the width of the weld is less than or equal to 40 mm, and the inability of the weld is less than or equal to 3 mm; and a groove angle of the groove surface is less than or equal to 40 degrees, and an obtuse edge of the groove surface is less than or equal to 4 mm.

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