Ultrasonic detection reflected signal positioning rule and positioning method

Abstract

The invention discloses an ultrasonic detection reflected signal positioning ruler and a positioning method. The ultrasonic detection reflected signal positioning ruler comprises an angle ruler (5), a straight ruler (6), a longitudinal sliding ruler (7), a transverse sliding ruler (8) and a multifunctional ruler (11), angle scale lines are marked on the bevel protractor, and a bevel protractor measuring edge and a bevel protractor diameter edge are arranged in parallel; the ruler comprises a ruler sliding rod and a ruler measuring frame, the ruler sliding rod is hinged to the angle ruler, and the ruler sliding rod is provided with an angle indicating line used for indicating the angle of the oblique angle and a horizontal scale line used for indicating the horizontal distance from the front end face of the probe to the inner side face of the wing plate. The ruler measuring frame is provided with a ruler measuring edge parallel to the ruler sliding rod. The longitudinal sliding ruler is installed on the straight ruler sliding rod in a sliding mode, and the transverse sliding ruler is installed on the longitudinal sliding ruler in a sliding mode. The multifunctional ruler is independently arranged and comprises a bevel ruler and a square ruler which are hinged together. According to the invention, the horizontal distance of the reflected signal can be accurately positioned.

Description

Technical Field

[0001] The invention relates to ultrasonic detection of bevel fillet welds, and in particular to an ultrasonic detection reflection signal positioning ruler and a positioning method. Background Art

[0002] Ultrasonic testing, with its high sensitivity, mature technology, low cost, and easy operation, is widely used in modern industry and production. Currently, ultrasonic testing is performed using ultrasonic flaw detectors, whose reflected signal positions can be directly read. After reading the reflected signal position on the ultrasonic flaw detector, a ruler is used to measure the corresponding dimensions on the weld surface to determine the actual reflection position of the reflected signal on the weld, allowing for accurate analysis and judgment of the reflected signal. Therefore, accurate measurement and location of the reflected signal position is crucial for accurate evaluation of ultrasonic testing results.

[0003] When ultrasonic testing flat butt welds and right-angle fillet welds, the horizontal position of the reflected signal can be determined by measuring with a ruler on the weld surface. However, in the structural testing of bevel fillet welds, such as Figure 1 As shown, the web 2 and the wing 1 are not perpendicular, and the angle between them is generally between 50° and 130°. When ultrasonically testing the weld, the probe 4 (the probe used in this article is an oblique probe) is placed on the left side 2-1 of the web and the right side 2-2 of the web for scanning and testing. When the probe 4 is placed on the right side 2-2 of the web for testing, the normal structure such as the protrusion 1-3 generated on the outer side 1-1 of the wing during welding generates a reflection signal. The horizontal position of the reflection signal measured on the surface of the weld 3 is within the range of the weld 3, which can easily misjudge the normal reflection signal as a defect reflection signal. When the probe 4 is placed on the left side 2-1 of the web for testing, the weld defect 3-2 and the wing base material defect 1-4 generate reflection signals. The horizontal position of the reflection signal measured on the surface of the weld 3 is significantly beyond the weld wing fusion surface 3-3, which can easily misjudge the reflection signals of the weld defect 3-2 and the wing base material defect 1-4 as normal structural reflection signals. For the wing plate base material defect 1-5, whether the probe 4 is placed on the left side 2-1 or the right side 2-2 of the web to detect the weld, the horizontal position of the reflected signal obviously exceeds the weld wing plate fusion surface 3-3, which is easily misjudged as a normal reflection signal.

[0004] However, during the actual inspection process, since the wing plate 1 and the web plate 2 are not perpendicular, the thickness of the wing plate 1 base material along the web plate surface direction is always greater than the thickness of the wing plate 1 base material, and changes with the angle between the wing plate 1 and the web plate 2. In addition, the angle between the left side surface 2-1 of the web plate and the inner side surface 1-2 of the wing plate is acute. When measuring the horizontal distance of the reflected signal with a normal ruler, it interferes with the wing plate 1, and the horizontal distance of the reflected signal from the front end surface 4-1 of the probe to the inner side surface 1-2 of the wing plate cannot be measured. The horizontal position of the reflected signal can only be roughly estimated, and it is impossible to accurately determine the position of the weld wing plate fusion surface 3-3 and the wing plate outer side surface 1-1, as well as the position deviation value and deviation direction of the horizontal position of the reflected signal relative to the weld wing plate fusion surface 3-3 and the wing plate outer side surface 1-1. This leads to misjudgment of the results during ultrasonic inspection of bevel fillet welds, resulting in unnecessary rework waste and product rework damage, and even quality and safety risks.

[0005] Therefore, how to achieve accurate measurement and rapid positioning of the horizontal position of the reflected signal from ultrasonic testing of bevel fillet welds is a major challenge in the existing field of ultrasonic testing technology for bevel fillet welds. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that the horizontal position of the reflected signal of the bevel fillet weld cannot be accurately measured during ultrasonic testing. One of the purposes of the present invention is to provide an ultrasonic testing reflected signal positioning ruler and positioning method to achieve accurate measurement of the angle between the wing plate and the web of the bevel fillet weld and accurate determination of the horizontal position of the reflected signal of the bevel fillet weld, thereby improving the detection efficiency and the accuracy of the detection results, preventing misjudgment, and effectively ensuring product quality.

[0007] A second object of the present invention is to provide an ultrasonic detection reflection signal positioning ruler and positioning method that can achieve accurate measurement of the height of an oblique fillet weld.

[0008] The third object of the present invention is to provide an ultrasonic detection reflection signal positioning ruler and positioning method that can quickly and accurately determine the position deviation value and deviation direction of the reflection signal relative to the weld wing plate fusion surface and the wing plate outer surface.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0010] An ultrasonic detection reflected signal positioning ruler, comprising an angle ruler, a straight ruler, a longitudinal slide ruler, a transverse slide ruler, and a multifunctional ruler, has the following structural features:

[0011] Angle scale lines are marked on the front of the angle ruler, and the center points of the angle scale lines are rotatably mounted on a hinge shaft. A measuring edge of the angle ruler and a diameter edge of the angle ruler used to simulate the inner side of the wing plate are arranged in parallel on the angle ruler. The angle ruler is provided with wing plate depth scale lines in a direction perpendicular to the diameter edge of the angle ruler. The zero scale lines of the diameter edge of the angle ruler and the wing plate depth scale lines pass through the center points of the angle scale lines.

[0012] The ruler includes a ruler slide bar and a ruler measuring frame, the ruler slide bar is hinged to the angle ruler via the hinge shaft, the ruler slide bar is provided with an angle indicator line and a horizontal scale line on a side facing the angle ruler, the angle indicator line and the angle scale line cooperate to indicate the oblique angle between the inner side surface of the wing plate and the left side surface or the right side surface of the web plate, and the horizontal scale line is used to indicate the horizontal distance from the front end surface of the probe to the inner side surface of the wing plate;

[0013] The ruler measuring frame is provided with a ruler measuring edge, and the ruler measuring edge is arranged parallel to the ruler sliding rod;

[0014] The longitudinal slide is slidably mounted on the ruler slide bar, and the transverse slide is slidably mounted on the longitudinal slide bar. A horizontal indicator line and a probe height scale line are provided on the longitudinal slide bar. The horizontal indicator line and the horizontal scale line cooperate to indicate the horizontal distance from the front end face of the probe to the inner side face of the wing plate. The probe height scale line is used to indicate the height of the probe. The zero point of the probe height scale line is located on the center line of the width direction of the ruler slide bar. A depth scale line and a probe height indicator line are provided on the transverse slide bar. The zero point position of the depth scale line is located on the end face of the transverse slide bar close to the ruler. The zero point of the probe height scale line is used to simulate the upper surface of the probe. The depth scale line is used to indicate the depth display value H of the ultrasonic flaw detector. 显示 ;

[0015] The multifunctional ruler is independently provided, and includes a bevel ruler and a square ruler. The bevel ruler is provided with a bevel, a bevel ruler measuring edge, a bevel ruler abutting edge and a ruler abutting surface. The angle of the bevel is ≤ the minimum angle between the wing plate and the web. The end of the bevel ruler away from the bevel is hinged to the front end of the square ruler.

[0016] A further improvement of the above solution is that a weld slide is slidably mounted on the ruler measuring frame, the weld slide is provided with a weld slide measuring edge and a weld slide abutting edge, and the weld slide abutting edge is flush with the ruler measuring edge.

[0017] A further improvement of the above solution is that the length of the weld slide is Where: L2-the vertical distance from the ruler measuring edge to the center of the ruler light hole, θ 小- minimum angle between flange and web, R2- radius of the second arc, L1- length of the side measured by angle ruler, L3- distance from the top edge measured by straight ruler to the diameter side of angle ruler, L 直测 - Ruler to measure the length of the sides.

[0018] A further improvement of the above solution is that an identification ruler is slidably installed on the ruler slide rod, the identification ruler is arranged parallel to the ruler slide rod, and a scanning starting position indicator line and a scanning mark are provided on the surface of the identification ruler close to the angle ruler.

[0019] A further improvement of the above solution is that a reinforcing semicircular plate is provided on the angle ruler, the center of the reinforcing semicircular plate is located at the center point of the angle scale line, and the radius of the reinforcing semicircular plate is less than the minimum height of the probe.

[0020] A further improvement of the above solution is that the wing plate depth scale lines are symmetrically distributed on both sides of the center of the angle ruler hole, and the shortest length of the wing plate depth scale lines is ≥T 翼板 ×|tan(90°-a)|×2, where T 翼板 represents the maximum thickness of the flange, and a represents the angle between the flange and the web that deviates the most from 90°.

[0021] A further improvement of the above solution is that the width of the ruler slide bar is less than the minimum height of the probe×2.

[0022] A further improvement of the above solution is that a marking ruler cover is installed on the ruler slide rod, and a fastening screw is threadedly connected to the marking ruler cover. The fastening screw contacts and tightens the marking ruler to fix the position of the marking ruler on the ruler slide rod.

[0023] A further improvement of the above scheme is that a ring hole is provided on the angle ruler with the hinge axis as the center, a fastening screw passes through the ring hole and is threadedly connected to the ruler slide rod, and the center of the hinge axis between the ruler and the angle ruler, the center line of the fastening screw and the angle indicator line are all located on the center straight line in the width direction of the ruler slide rod.

[0024] A further improvement of the above solution is that the angle ruler is provided with a second arc, and the vertical distance from the measuring edge of the ruler to the center of the hinge axis is ≥H 焊缝 +R2×cos[(90°-arcsin(L1 / 2÷R2)-(θ 大 -90°)], where: R2-radius of the second arc, H 焊缝 - Maximum height of weld, L1 - Length of angle ruler side, θ 大 - Maximum angle between the flange and the web.

[0025] A further improvement to the above solution is that the vertical distance from the top of the ruler measurement frame to the center of the hinge axis is ≥ H 焊缝 -

[0026] {R2×sin[90°-arcsin(L1 / 2÷R2)-(θ 大 -90°)]-{L2-R2×cos[(90°-arcsin(L1 / 2÷R2)-(θ 大 -90°)}×tan(θ 大 -90°)}, where: H 焊缝 - Maximum height of weld, R2- radius of second arc, L1- length of angle ruler measuring side, L2- vertical distance from ruler measuring side to the center of ruler light hole, θ 大 - Maximum angle between the flange and the web.

[0027] A further improvement of the above solution is that the angle ruler is provided with a third arc, the radius of the third arc is ≥ (H 探 +T 腹板 +H 焊缝 ) / sin a, where: H 探 -Maximum probe height, T 腹板 - Maximum thickness of web, H 焊缝 -The maximum height of the weld is, a-the angle between the flange and the web with the largest deviation from 90°.

[0028] Based on the same inventive concept, the present invention also provides a method for locating the horizontal distance of a reflected signal based on the ultrasonic detection reflected signal positioning ruler, which comprises:

[0029] S1: When the probe is placed on the right side of the web to scan the bevel fillet weld, the specific steps include:

[0030] S1-1: Measure the angle between the inner side of the wing plate and the left side of the web: When measuring, place the measuring edge of the ruler against the left side of the web, rotate the angle ruler so that the measuring edge of the ruler is against the inner side of the wing plate, keep it stable and fix the relative position of the angle ruler and the ruler. At this time, the angle indicator line on the ruler indicates the angle scale line corresponding to the angle between the inner side of the wing plate and the left side of the web;

[0031] S1-2: Adjust the position of the horizontal slider on the vertical slider according to the probe height value used: adjust so that the value indicated by the probe height indicator line on the horizontal slider on the vertical slider is equal to the probe height value used, and then fix the position of the horizontal slider on the vertical slider;

[0032] S1-3: According to the conventional ultrasonic testing method, place the probe on the right side of the web and scan the entire bevel fillet weld;

[0033] S1-4: After a suspicious reflection signal is detected, use a beveled ruler to measure the horizontal distance L6 from the front end of the probe to the inner side of the wing plate. During measurement, hold the probe in place and place the measuring edge of the beveled ruler against the upper surface of the probe. The measuring edge of the beveled ruler should be parallel to the right side of the web and the side of the probe, with the end of the beveled ruler resting against the inner side of the wing plate.

[0034] S1-5: Based on the horizontal distance L6 between the front end of the probe and the inner side of the wing plate measured in step S1-4, adjust the position of the longitudinal slider on the ruler slide rod so that the value indicated by the horizontal indicator line of the longitudinal slider is equal to the measured L6, and fix the position of the longitudinal slider on the ruler slide rod;

[0035] S1-6: According to the ultrasonic flaw detector depth display value H 显示 and horizontal display value L 显示 Determine the actual position of the suspicious reflection signal: Place the beveled ruler on the upper surface of the horizontal slide, align the depth scale line of the horizontal slide with the measuring edge of the beveled ruler, and the depth display value H of the ultrasonic flaw detector. 显示 The measuring edge of the bevel ruler is kept parallel to the ruler slide bar, the end point of the bevel ruler is against the diameter side of the angle ruler, and the horizontal distance L7 from the front side of the horizontal slide to the diameter side of the angle ruler is read;

[0036] S1-7: According to formula L 偏差 =L7-L 显示 Calculate and analyze the reflected signal position, when L 偏差 >0, it means that the reflected signal position is located on the side of the weld wing fusion surface that is biased towards the probe. 偏差 = 0, it means that the reflected signal is located at the fusion surface of the weld wing plate. 偏差 <0, it means that the reflected signal is located on the side of the fusion surface of the weld wing plate, which is biased towards the outer side of the wing plate. Use a beveled ruler to read the depth scale line of the wing plate. When reading, keep the measuring edge of the beveled ruler parallel to the ruler slide bar.

[0037] S2: When the probe is placed on the left side of the web to scan and inspect the bevel fillet weld, specifically including: using the operating steps and methods described in S1-1 to S1-7, specifically, when performing the operation, the left side of the web is replaced by the right side of the web, and the right side of the web is replaced by the left side of the web.

[0038] A further improvement to the above scheme is that, based on S1-1, the weld slider is first slid so that the measuring edge of the weld slider abuts against the weld toe of the web side weld, and the position of the weld slider is fixed on the ruler measuring frame, and then the multi-function ruler is used to read the measured bevel fillet weld height value: during the measurement process, the angle between the square ruler and the bevel ruler is continuously adjusted so that the measuring abutment surface of the bevel ruler abuts against the upper surface of the angle ruler, the abutment edge of the bevel ruler abuts against the measuring edge of the angle ruler, and the measuring edge of the square ruler abuts against the abutment edge of the weld slider. The value indicated by the weld height indicator line is the bevel fillet weld height value H measured in S1-1. 焊缝 .

[0039] A further improvement of the above scheme is to use K×T 腹板 +H 焊缝 +(H 探头 +T 腹板 ) / tana-L5 Calculate the secondary wave scanning starting position value B2, make the value indicated by the scanning starting position line equal to the secondary wave scanning starting position value B2, and then fix the position of the marker on the ruler, where: K is the tangent value of the probe's maximum sound beam emission angle, T 腹板 - Actual thickness of web, H 焊缝 - Actual height of weld, H 探头 -actual height of the probe, a-the angle between the wing and the web measured in S1-1, L5-actual leading edge length of the probe.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] The present invention solves the problem that an ordinary ruler cannot accurately measure the horizontal position of the reflected signal during ultrasonic testing, and can quickly and accurately determine the position deviation value and deviation direction of the reflected signal relative to the weld wing plate fusion surface and the outer surface of the wing plate, thereby improving the detection efficiency and the accuracy of the detection results, preventing misjudgment, and effectively ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 Schematic diagram of the ultrasonic detection structure of the existing bevel fillet weld.

[0044] Figure 2 This is a schematic structural diagram of the ultrasonic detection reflected signal positioning ruler of the present invention when used for reflecting signal horizontal distance measurement.

[0045] Figure 3 This is a structural diagram of an angle ruler.

[0046] Figure 4 Schematic diagram of the structure of a ruler.

[0047] Figure 5 It is a structural diagram of the longitudinal slider.

[0048] Figure 6 Schematic diagram of the structure of the horizontal slider.

[0049] Figure 7 Schematic diagram of the structure of the weld slide.

[0050] Figure 8 This is a structural diagram of the marking ruler.

[0051] Figure 9 Schematic diagram of the structure of the multifunctional ruler, where a is the front structural diagram and b is the back structural diagram.

[0052] Figure 10 This is a structural diagram of the weld slide cover.

[0053] Figure 11 It is a structural diagram of the marking scale cover.

[0054] Figure 12 The figure is a schematic diagram of the principle of the present invention for measuring the angle between the wing plate and the web of the bevel fillet weld.

[0055] Figure 13 This is a schematic diagram of the use of the present invention for measuring the angle between the wing plate and the web of an oblique fillet weld and the horizontal distance of the reflected signal.

[0056] Figure 14 This is a schematic diagram of the present invention in use for measuring the height of an oblique fillet weld. DETAILED DESCRIPTION

[0057] The present invention will be further described below in conjunction with specific preferred embodiments, but the scope of protection of the present invention is not limited thereby.

[0058] In the description of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "wing," and "web" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0060] See also Figure 2 An embodiment of the ultrasonic detection reflection signal positioning ruler of the present invention includes an angle ruler 5, a ruler 6, a longitudinal slide 7, a transverse slide 8, a weld slide 9, a marking ruler 10, a multifunctional ruler 11, a weld slide cover 12, and a marking ruler cover 13.

[0061] like Figure 3 - Figure 11 As shown, the angle ruler 5 is provided with an angle ruler hole 5-1, and the first hinge shaft 14 is rotatably installed in the angle ruler hole 5-1.

[0062] The angle ruler 5 is provided with a first arc 5-2, a second arc 5-3 and a third arc 5-4, and the centers of the first arc 5-2, the second arc 5-3 and the third arc 5-4 are all located at the center of the angle ruler hole 5-1.

[0063] Angle scale lines 5-6 ranging from 40° to 140° are provided along the first arc 5-2 on the angle ruler 5, with 100 grids and an interval of 1°.

[0064] The radius of the third arc 5-4 is based on the maximum thickness T of the web 腹板 , Maximum probe height H 探 , Maximum weld height H 焊缝 , select the angle a between the flange and the web with the largest deviation from 90°, the radius of the third arc 5-4 ≥ (H 探 +T 腹板 +H 焊缝 ) / sin a. Considering the maximum height of the probe H 探 The maximum thickness of the web is 25 mm. 腹板 The maximum height of the weld is 30 mm. 焊缝 The angle a between the wing plate and the web plate that deviates the most from 90° is 50° and 130°, and the radius of the third arc 5-4 is preferably 100 mm.

[0065] In order to ensure that the size of the positioning ruler is moderate, the radius of the second arc 5-3 is preferably 70 mm.

[0066] The angle ruler 5 also has a parallel edge 5-5 and a measuring edge 5-8. The edge 5-5 passes through the center of the angle ruler hole 5-1, and the measuring edge 5-8 is preferably 70 mm long. During measurement, the measuring edge 5-8 is aligned with the inner side 1-2 of the wing panel, allowing the edge 5-5 to simulate the inner side 1-2 of the wing panel. This arrangement and positional distribution of the measuring edge 5-8 and the straightedge measuring edge 6-8 eliminates interference from the weld 3 in accurately measuring the angle between the wing panel 1 and the web 2.

[0067] A reinforcing semicircular plate 5-9 is positioned in the middle of the protractor's diametrical edge 5-5. The center of the reinforcing semicircular plate 5-9 is positioned at the center of the protractor's hole 5-1. This placement ensures that the center of the protractor's hole 5-1 lies on the protractor's diametrical edge 5-5. The radius of the reinforcing semicircular plate 5-9 is less than the minimum height of the probe 4. The radius of the reinforcing semicircular plate 5-9 is preferably 8 mm.

[0068] The angle ruler 5 is provided with a ring hole 5-7, which is located in the angle indication range of 40° to 140°, and the center of the ring hole 5-7 is located at the center of the angle ruler hole 5-1.

[0069] The angle ruler 5 is provided with a wing plate depth scale line 5-10 perpendicular to the angle ruler diameter side 5-5, and the wing plate depth scale line 5-10 is symmetrically distributed on both sides of the center of the angle ruler hole 5-1. The shortest length of the wing plate depth scale line 5-10 is ≥T 翼板 ×|tan(90°-a)|×2, where T 翼板 represents the maximum thickness of the wing, and a represents the angle between the wing and the web that deviates most from 90°. This ensures accurate readings of the wing depth at angles of 40° and 140°. Considering the maximum thickness of wing 1 is 20mm, the minimum length of wing depth lines 5-10 is preferably 34mm. The placement of wing depth lines 5-10 ensures the precise location of the reflected signal in the base material of wing 1 along the thickness of wing 1, even when wing 1 and web 2 are not perpendicular.

[0070] Considering the maximum thickness of the wing panel 1 is 20 mm, the number of grid lines 5-10 on the wing panel depth scale is preferably 20, with intervals of 1 mm. To facilitate quick reading of the depth value of the wing panel 1, the color of the scale lines 5-10 indicating the values ending in "0" and "5" is different from the other scale lines to ensure a large color difference. The scale lines 5-10 on the wing panel depth scale ending in "0" and "5" are preferably red, and the remaining scale lines 5-10 on the wing panel depth scale are preferably black.

[0071] The angle ruler 5 is provided with a first hollow 5-11, and the straight ruler 6 is provided with a second hollow 6-14, so as to reduce the weight of the positioning ruler.

[0072] like Figure 4 As shown, the ruler 6 is composed of a ruler slide bar 6-1 and a ruler measuring frame 6-2.

[0073] The ruler slide bar 6 - 1 is provided with a ruler optical hole 6 - 3 , and the ruler 6 is rotatably connected to the hinge shaft 14 via the ruler optical hole 6 - 3 , that is, the ruler 6 is hinged to the angle ruler 5 via the hinge shaft 14 .

[0074] An angle indicator line 6 - 4 is provided on the surface of the ruler slide bar 6 - 1 facing the angle ruler 5 , which is used to cooperate with the angle scale line 5 - 6 on the angle ruler 5 to indicate the angle between the wing plate 1 and the web plate 2 .

[0075] A first threaded hole 6-5 is provided on the side of the ruler slide 6-1 facing the angle ruler 5. A fastening screw 15 passes through an annular hole 5-7 on the angle ruler 5 and is threadedly connected to the first threaded hole 6-5. This provides two-point support for the ruler 6 (the ruler's smooth hole 6-3 and the first threaded hole 6-5 connecting it to the angle ruler 5), further enhancing the structural stability. As the angle ruler 5 rotates about the ruler 6, the fastening screw 15 rotates along with the ruler 6 in the annular hole 5-7. Once the angle between the ruler's measuring edge 5-8 and the ruler's measuring edge 6-8 is adjusted, the fastening screw 15 is tightened to secure the angle ruler 5 to the ruler 6.

[0076] The center of the straightedge hole 6-3, the center of the first straightedge threaded hole 6-5, and the angle indicator line 6-4 are all located on the centerline of the width of the straightedge slide bar 6-1. Because the center of the straightedge hole 6-3 coincides with the center of the angle ruler hole 5-1, the angle ruler ring hole 5-7, the first arc 5-2, and the angle scale line 5-6 all share the center of the angle ruler hole 5-1. When measuring angles:

[0077] 1. Ensure that when measuring different angles, the fastening screw 15 at the threaded hole of the first straight ruler moves smoothly in the annular holes 5-7 of the angle ruler without interference;

[0078] Second, ensure that when measuring different angles, the angle indicator line 6-4 is exposed to the angle ruler 5 for an equal length, that is, the angle indicator line 6-4 will not be blocked too much or even completely blocked when measuring certain angles, and the angle indicator line 6-4 will not be completely blocked by the angle ruler or even be far away at certain angles, which will make it inconvenient to read the angle value.

[0079] The ruler measuring frame 6-2 is provided with a ruler measuring edge 6-8, which is parallel to the ruler slide bar 6-1. The ruler measuring edge 6-8 is preferably 100 mm long. When the angle reading on the angle ruler 5 is 90°, the angle ruler measuring edge 5-8 is perpendicular to the ruler measuring edge 6-8.

[0080] The vertical distance from the ruler measuring edge 6-8 to the center of the ruler light hole 6-3 is ≥H 焊缝+R2×cos[(90°-arcsin(L1 / 2÷R2)-(θ 大 -90°)], where: R2-radius of the second arc, H 焊缝 - Maximum height of weld, L1 - Length of angle ruler side, θ 大 -The maximum angle between the wing plate and the web plate is preferably 90mm.

[0081] The vertical distance from the top edge 6-9 of the ruler measuring frame to the center of the ruler light hole 6-3 is ≥H 焊缝 -{R2×sin[90°-arcsin(L1 / 2÷R2)-(θ 大 -90°)]-{L2-R2×cos[(90°-arcsin(L1 / 2÷R2)-(θ 大 -90°)}×tan(θ 大 -90°)}, where: H 焊缝 - Maximum height of weld, R2- radius of second arc, L1- length of angle ruler measuring side, L2- vertical distance from ruler measuring side to the center of ruler light hole, θ 大 -The maximum angle between the wing plate and the web plate is preferably 20 mm.

[0082] The ruler 6 is in contact with the other side of the angle ruler 5 away from the angle scale lines 5-6. The cross section of the ruler slide bar 6-1 is rectangular, and the width of the ruler slide bar 6-1 is less than the minimum height of the probe × 2. The width of the ruler slide bar 6-1 is preferably 24 mm.

[0083] The distance between the lower end of the ruler slide bar 6-1-2 and the center of the ruler light hole 6-3 is ≥ 2×K×T 腹板 +H 焊缝 +(H 探头 +T 腹板 ) / tana-L5+L 纵滑 +L 标盖 , where: K- tangent of the maximum sound beam emission angle of the probe, T 腹板 - Maximum thickness of web, H 焊缝 - Maximum height of weld, H 探头 - Maximum height of the probe, a- Minimum angle between the wing and the web, L5- Length of the probe front edge, L 纵滑 - Longitudinal slide length, L 标盖 - Length of the marking ruler cover plate, considering that the maximum K of the probe 4 is 2.5, the maximum thickness of the web 2 is 30mm, the maximum height of the weld 3 is 20mm, the maximum height of the probe 4 is 25mm, the minimum angle between the wing 1 and the web 2 is 50°, the minimum leading edge length of the probe is 10mm, the length of the longitudinal slide 7 is 50mm, the length of the marking ruler cover plate 13 is 10mm, and the distance from the lower end of the ruler slide bar 6-1-2 to the center of the ruler light hole 6-3 is preferably 260mm. The distance from the upper end of the ruler slide bar 6-1-1 to the center of the ruler light hole 6-3 is

[0084] Where: R2-the radius of the second arc, L1-the length of the angle ruler, W 直杆 - The width of the ruler slide bar is preferably 57 mm, which prevents the upper end 6-1-1 of the ruler measuring rod from protruding from the measuring edge 5-8 of the angle ruler during the rotation of the angle ruler 5 around the ruler 6.

[0085] The side of the ruler slide 6-1 facing the angle ruler 5 is provided with a horizontal scale line 6-6. The distance from the zero point of the horizontal scale line 6-6 to the center of the ruler light hole 6-3 is ≥ the radius of the reinforcing semicircular plate 5-9, preferably 10mm. The rear end surface of the longitudinal slide notch 7-1 is a horizontal indicator line 7-1-1. When the horizontal reading is zero, the front side surface 8-4 of the transverse slide is flush with the center of the angle ruler hole 5-1. To ensure that the requirements for secondary wave detection of welds are met, the number of horizontal scale lines is ≥ [2×K×T 腹板 +H 焊缝 +(H 探头 +T 腹板 ) / tan a-L5] / 1, where: K is the tangent of the maximum sound beam emission angle of the probe, T 腹板 - Maximum thickness of web, H 焊缝 - Maximum height of weld, H 探头 -maximum height of probe, a-minimum angle between wing and web, L5-probe front length, considering that the maximum K of probe 4 is 2.5, the maximum thickness of web 2 is 30mm, the maximum height of weld 3 is 20mm, the maximum height of probe 4 is 25mm, the minimum angle between wing 1 and web 2 is 50°, the minimum front length of probe is 10mm, the number of horizontal scale lines 6-6 is preferably 210 grids, with an interval of 1mm.

[0086] The ruler slide 6-1 is provided with a first ruler slot 6-10, and the longitudinal slide 7 is provided with a longitudinal slide slot 7-2. The longitudinal slide 7 is slidably connected to the ruler slide 6-1 through the cooperation of the first ruler slot 6-10 and the longitudinal slide slot 7-2. The longitudinal slide 7 preferably has a length of 50 mm along the length of the ruler slide 6-1. The longitudinal slide 7 is provided with a longitudinal slide threaded hole 7-3 on the side of the longitudinal slide 7 facing the ruler measuring edge 6-8. A fastening screw 15 is disposed within the longitudinal slide threaded hole 7-3. The fastening screw 15 is threadedly connected to the longitudinal slide threaded hole 7-3 to contact and tighten with the ruler slide 6-1, thereby securing the longitudinal slide 7 on the ruler slide 6-1.

[0087] The upper surface 6-2-1 of the ruler measuring frame is lower than the lower surface 7-6 of the longitudinal slide, so as to prevent the longitudinal slide 7 from interfering with the ruler when sliding on the ruler slide bar 6-1.

[0088] The longitudinal slider 7 is provided with a longitudinal slider notch 7-1. This notch 7-1 is positioned so that when the front side 8-4 of the transverse slider is flush with the center of the angle ruler hole 5-1, the longitudinal slider 7 does not interfere with the reinforcing semicircular plate 5-9. The length of the longitudinal slider notch 7-1 is greater than the radius of the reinforcing semicircular plate 5-9, preferably 10 mm. The upper surface 7-1-2 of the longitudinal slider notch is lower than the upper surface 6-1-3 of the straight ruler slide bar to prevent interference between the longitudinal slider notch 7-1 and the angle ruler 5. The height difference is preferably 1 mm.

[0089] The longitudinal slide 7 is provided with a crossbar 7-4, the length of which is ≥H 探 -W 直尺 / 2+L 横， Among them: H 探 - Maximum probe height, W 直尺 -Width of ruler slider, L 横 - Length of the horizontal slider. Considering that the maximum height of the probe is 25 mm and the width of the ruler slider is 24 mm, the length of the horizontal slider 8 is 55 mm, preferably 65 mm.

[0090] The upper surface of the longitudinal slider 7 is provided with a probe height scale line 7-5, and the right side of the transverse slider 8 is a probe height indicator line 8-5. The zero point of the probe height scale line 7-5 is located on the width center line of the ruler slide bar 6-1. The number of grids of the probe height scale line 7-5 is selected according to the maximum height size of the probe 4, preferably 30 grids, with an interval of 1mm.

[0091] A transverse slide 8 is provided on the crossbar 7-4, and the transverse slide 8 is slidably connected to the crossbar 7-4 through the transverse slide groove 8-1. In order to facilitate the use of the transverse slide 8 length to simulate the ultrasonic flaw detector depth display value (H 显示 ), horizontal slide 8 length ≥ T 腹板 +H 焊缝 , where: T 腹板 - Maximum thickness of web, H 焊缝 - Maximum height of the weld seam. Considering that the maximum thickness of the web 2 is 30 mm, the maximum height of the weld seam 3 is 20 mm, preferably 55 mm.

[0092] A transverse slide threaded hole 8-3 is provided on the rear side surface 8-6 of the transverse slide, and a fastening screw 15 is provided in the transverse slide threaded hole 8-3. The fastening screw 15 is threadedly connected with the transverse slide threaded hole 8-3 and is in contact with the cross bar 7-4 to be tightened.

[0093] The upper surface 8-7 of the transverse slide is lower than the lower surface 5-12 of the angle ruler, and the height difference is preferably 1 mm to prevent the transverse slide 8 from interfering with the angle ruler 5 when the longitudinal slide 7 slides toward the side of the angle ruler 5.

[0094] The upper surface 8-7 of the transverse slide is provided with depth scale lines 8-2 along the front side surface 8-4 and the rear side surface 8-6 of the transverse slide. The zero point of the depth scale line 8-2 is located at the end surface of the transverse slide 8 close to the ruler 6. The number of grids of the depth scale line 8-2 is ≥(T 腹板 +H 焊缝 / 1), where: T 腹板 - Maximum thickness of web, H 焊缝 The maximum height of the weld is preferably 50 grids with a spacing of 1 mm. The width of the horizontal slide 8 is preferably 30 mm. The depth scale lines 8-2 are distributed along both sides of the upper surface 8-7 of the horizontal slide to facilitate the ruler and the ruler slide bar 6-1 to quickly maintain parallelism when using the ruler to measure the horizontal distance of the reflected signal.

[0095] The ruler measuring frame 6-2 is provided with a measuring frame slot 6-12 and a measuring frame threaded hole 6-13, and the weld slide cover 12 is provided with a weld slide cover light hole 12-1. A screw 16 is provided in the weld slide cover light hole 12-1, and the screw 16 is threadedly connected with the measuring frame threaded hole 6-13 to fix the weld slide cover 12 on the measuring frame slot 6-12.

[0096] The weld slider 9 is slidably connected to the ruler measuring frame 6-2 through the measuring frame slot 6-12. The weld slider cover 12 is provided with a weld slider cover threaded hole 12-2. A fastening screw 15 is provided in the weld slider cover threaded hole 12-2. The fastening screw 15 is threadedly connected to the weld slider cover threaded hole 12-2 to contact and tighten the weld slider 9 and fix the position of the weld slider 9 in the measuring frame slot 6-12.

[0097] The weld slider 9 is provided with a weld slider measuring edge 9-1 and a weld slider abutting edge 9-2. The weld slider abutting edge 9-2 is flush with the ruler measuring edge 6-8. The weld slider upper surface 9-4 is lower than the angle scale lower surface 5-12 to avoid interference with the angle scale's rotation. The height difference between the weld slider upper surface 9-4 and the angle scale lower surface 5-12 is preferably 1 mm.

[0098] The arrangement and position distribution of the weld slide 9 and the angle ruler measuring edges 5-8 can realize the measurement of the height of the bevel fillet weld 3. When measuring the height of the bevel fillet weld 3, Figure 12 As shown, the measuring edge 5-8 of the angle ruler abuts against the surface of the wing plate 1, the abutting edge 9-2 of the weld slide abuts against the surface of the web 2, and the measuring edge 9-1 of the weld slide abuts against the toe 3-1 of the bevel fillet weld, thereby achieving measurement of the height of the bevel fillet weld 3 (it is also possible to abut the measuring edge 5-8 of the angle ruler against the surface of the web 2, and the abutting edge 9-2 of the weld slide abuts against the surface of the wing plate 1, to measure the height of the weld 3 in another direction).

[0099] A weld height indicator line 9-3 is provided on the side of the weld slide 9 facing the angle ruler 5. The distance between the weld height indicator line 9-3 and the weld slide measuring edge 9-1 is preferably 10 mm.

[0100] In order to ensure that the weld height can be measured, that is, the weld slide measuring edge 9-1 can be against the bevel fillet weld toe 3-1 during measurement, since the weld slide 9 is the longest when the angle between the web 2 and the flange 1 is the smallest, the length of the weld slide 9 is Where: L2-the vertical distance from the ruler measuring edge to the center of the ruler light hole, θ 小 - minimum angle between flange and web, R2- radius of the second arc, L1- length of the side measured by angle ruler, L3- distance from the top edge measured by straight ruler to the diameter side of angle ruler, L 直测 - Use a ruler to measure the side length, preferably 260mm.

[0101] A second ruler threaded hole 6-7 is provided on the ruler slide 6-1, and the marking ruler cover 13 is provided with a marking ruler cover light hole 13-1. A screw 16 is provided in the marking ruler cover light hole 13-1. The screw 16 is threadedly connected with the second ruler threaded hole 6-7 to fix the marking ruler cover 13 and the ruler slide 6-1 together.

[0102] The ruler slide bar 6-1 is provided with a second ruler slot 6-11, into which the marking ruler 10 is slidably mounted. The marking ruler cover 13 is provided with a threaded hole 13-2, into which a fastening screw 15 is disposed. The fastening screw 15 is threadedly connected to the threaded hole 13-2 to contact and tighten the marking ruler 10, thereby securing the marking ruler 10 in the second ruler slot 6-11.

[0103] The marking ruler 10 is provided with a marking ruler notch 10-1 on the side facing the angle ruler 5 so that the marking ruler 10 can slide smoothly in the second ruler slot 6-11. The marking ruler 10 is provided with a stopper 10-2 on the side facing the marking ruler cover 13 to prevent the marking ruler 10 from sliding completely into the second ruler slot 6-11.

[0104] The surface of the marking ruler 10 near the angle ruler 5 is provided with a scan starting position indicator line 10-3 and a scan mark 10-4. The provision of the scan starting position indicator line 10-3 and the scan mark 10-4 facilitates quick and accurate differentiation of the primary and secondary wave reflection signals during the inspection process. When the stopper 10-2 abuts the lower end 6-1-2 of the ruler slide bar, the scan starting position indicator line 10-3 is flush with the center of the ruler optical hole 6-3.

[0105] The multifunctional ruler 11 is composed of a bevel ruler 11 - 1 and a square ruler 11 - 2 .

[0106] A bevel ruler aperture 11-1-2 is provided on the side of the bevel ruler 11-1 away from the bevel opening 11-1-1. A hinge shaft 14 is provided within the bevel ruler aperture 11-1-2. The hinge shaft 14 is hingedly fixed to the bevel ruler 11-1. A square ruler aperture 11-2-1 is provided on the square ruler 11-2. The square ruler 11-2 is rotatably connected to the hinge shaft 14 through the square ruler aperture 11-2-1.

[0107] The bevel ruler 11-1 is provided with a bevel ruler measuring edge 11-1-3, a bevel ruler abutting edge 11-1-4 and a ruler abutting surface 11-1-5.

[0108] The bevel ruler 11-1 is provided with a bevel 11-1-1, the angle of the bevel 11-1-1 is ≤ the minimum angle between the wing plate 1 and the web 2, preferably 40°. The setting of the bevel 11-1-1 solves the problem that the horizontal distance of the reflected signal cannot be measured due to interference between the ordinary measuring ruler and the wing plate surface during ultrasonic testing of the bevel fillet weld.

[0109] Length from the center of the bevel ruler hole 11-1-2 to the end point of the bevel 11-1-1 Where: L2-the vertical distance from the ruler measuring edge to the center of the ruler light hole, θ 小 - Minimum angle between flange and web, R2- radius of second arc, L1- length of side measured by angle ruler, preferably 250mm.

[0110] Length scale lines 11-1-6 are provided on both sides of the bevel ruler 11-1 along the measuring edge 11-1-3 of the bevel ruler. The zero point of the length scale line 11-1-6 is located at the end point of the bevel 11-1-1. The number of grids of the length scale line 11-1-6 is ≥ (2×K×T 腹板 ) / 1, where: K is the tangent of the maximum sound beam emission angle of the probe, T 腹板 - Maximum web thickness. Considering that the maximum probe K is 2.5 and the web thickness is 30 mm, the length scale line 11-1-6 is preferably 200 grids with a spacing of 1 mm.

[0111] Bevel ruler 11-1 is provided with a bevel ruler notch 11-1-7. The distance between the inner edge 11-1-7a of the notch and the center of the bevel ruler aperture 11-1-2 is ≤ L4, where L4 is the distance from the weld slide measuring edge to the weld height indicator line, preferably 5 mm. The length of bevel ruler notch 11-1-7 is preferably 20 mm. This prevents the indicated value from being obscured.

[0112] Square ruler 11-2 is equipped with a reinforcing plate 11-2-4. The distance from the inner edge 11-2-4a of the reinforcing plate to the center of the square ruler aperture 11-2-1 is ≤ L4, where L4 is the distance from the weld slide measuring edge to the weld height indicator line, preferably 5mm. The arrangement of reinforcing plate 11-2-4 ensures that the square ruler measuring edge 11-2-2 and the center of the square ruler aperture 11-2-1 are aligned.

[0113] A square ruler measuring edge 11-2-2 is provided on the side of the square ruler 11-2 facing the reinforcing plate 11-2-4.

[0114] The square ruler 11-2 is provided with weld height scale lines 11-2-3 along the measuring edge 11-2-2 of the square ruler 11-2 facing the bevel ruler 11-1. The number of grids of the weld height scale lines 11-2-3 is ≥H. 焊缝 / 1, where: H 焊缝 Maximum weld height: preferably 40 grids with 1mm intervals. The distance from the zero point of weld height scale line 11-2-3 to the center of square ruler aperture 11-2-1 is equal to the distance from weld height indicator line 9-3 to weld slide measuring edge 9-1, preferably 10mm. When the weld height reading is zero, weld slide measuring edge 9-1 is flush with the center of square ruler aperture 11-2-1 and the center of bevel ruler aperture 11-1-2.

[0115] The bevel ruler's abutment edge 11-1-4 is aligned with the center of the bevel ruler's aperture 11-1-2. The center of the square ruler's aperture 11-2-1 is aligned with the square ruler's measuring edge 11-2-2. The intersection of the bevel ruler's abutment edge 11-1-4 and the square ruler's measuring edge 11-2-2 is located at the center of the hinge shaft 14.

[0116] The bevel ruler abutting edge 11-1-4 and the square ruler measuring edge 11-2-2 simulate the surface of the wing plate 1 and the surface of the web 2 respectively, and the center of the hinge axis simulates the intersection line of the surface of the wing plate 1 and the surface of the web 2. The setting of the multifunctional ruler 11 can realize the reading of the measured weld height value. When reading the weld height, the angle between the bevel ruler 11-1 and the square ruler 11-2 is continuously adjusted, such as Figure 13 As shown, the bevel ruler measuring abutment surface 11-1-5 abuts against the upper surface 5-13 of the angle ruler, the bevel ruler abutment edge 11-1-4 abuts against the angle ruler measuring edge 5-8, and the square ruler measuring edge 11-2-2 abuts against the weld slide abutment edge 9-2. The value indicated by the weld height indicator line 9-3 is the measured weld height value H.

[0117] The ultrasonic detection reflected signal positioning method of the present invention adopts the above positioning ruler and mainly includes:

[0118] S1: The probe 4 is placed on the right side of the web 2-2 to scan and inspect the bevel fillet weld 3.

[0119] S1-1: Measure the angle between the inner side of the wing plate 1-2 and the left side of the web plate 2-1. Figure 12 、 Figure 13 As shown, during measurement, the ruler's measuring edge 6-8 is placed against the left side of the web 2-1. The angle ruler 5 is rotated so that the angle ruler's measuring edge 5-8 is placed against the inner side of the flange 1-2. The angle ruler 5 and the ruler 6 are held steady and the fastening screw 15 is tightened to secure the relative positions of the angle ruler 5 and the ruler 6. In this manner, the ruler's measuring edge 6-8 can simulate the left side of the web 2-1, and the angle ruler's measuring edge 5-8 can simulate the inner side of the flange 1-2, thereby measuring the angle between the inner side of the flange 1-2 and the left side of the web 2-1. Since the angle ruler's measuring edge 5-8, the angle ruler's diameter edge 5-5, the ruler's measuring edge 6-8, and the ruler's sliding rod 6-1 form a parallelogram, and according to the principle of equal diagonal angles of a parallelogram, the corresponding angle on the ruler indicated by the angle indicator line 6-4 on the ruler 6 is the angle between the inner side of the flange 1-2 and the left side of the web 2-1.

[0120] S1-2: Adjust the position of transverse slide 8 on crossbar 7-4 according to the height of the probe 4 in use. Ensure that the value indicated by probe height indicator line 8-5 is equal to the probe height in use. Tighten fastening screw 15 to secure transverse slide 8 in place on crossbar 7-4. (Probe specifications are generally standardized; after the initial adjustment, subsequent adjustments are not necessary.)

[0121] S1-3: According to the conventional ultrasonic testing operation method, the probe 4 is placed on the right side 2-2 of the web to scan and inspect the entire bevel fillet weld 3.

[0122] S1-4: After discovering a suspicious reflection signal, use a beveled ruler 11-1 to measure the horizontal distance L6 from the probe's front end 4-1 to the inner side 1-2 of the wing. During measurement, hold probe 4 in place. Align the measuring edge 11-1-3 of the beveled ruler with the probe's upper surface 4-2. Keep the measuring edge 11-1-3 parallel to the right side 2-2 of the web and the probe's side 4-3. Align the end of the beveled ruler's bevel 11-1-1 with the inner side 1-2 of the wing.

[0123] S1-5: Adjust the position of the longitudinal slider 7 on the ruler rod 6-1 based on the horizontal distance L6 between the front end surface of the probe 4-1 and the inner side surface of the wing plate 1-2 measured in step 1.6. Adjust the position of the longitudinal slider 7 on the ruler rod 6-1 until the value indicated by the horizontal indicator line 7-1-1 on the longitudinal slider equals the measured L6. Tighten the fastening screw 15 to secure the longitudinal slider 7 on the ruler rod 6-1.

[0124] S1-6: According to the ultrasonic flaw detector depth display value H 显示 and horizontal display value L 显示Determine the actual position of the suspected reflection signal. Place the beveled ruler 11-1 on the upper surface 8-7 of the horizontal slide, and align the value of the horizontal slide depth scale 8-2 with the beveled ruler measuring edge 11-1-3. 显示 The measuring edge 11-1-3 of the bevel ruler is parallel to the ruler slide bar 6-1, the end point of the bevel edge 11-1-1 of the bevel ruler is against the diameter edge 5-5 of the angle ruler, and the horizontal distance L7 from the front side surface 8-4 of the horizontal slide ruler to the diameter edge 5-5 of the angle ruler is read.

[0125] S1-7: According to formula L 偏差 =L7-L 显示 Calculate and analyze the reflected signal position. 偏差 >0, it means that the reflected signal position is located at the weld wing plate fusion surface 3-3, which is biased towards the probe 4. 偏差 = 0, it means that the reflected signal position is at the 3-3 fusion surface of the weld wing plate. When L 偏差 <0, it means that the reflected signal position is located on the side of the weld wing plate fusion surface 3-3 that is biased towards the outer side surface 1-1 of the wing plate. Use a bevel ruler to read the depth scale line 5-10 of the wing plate. When reading, the measuring edge 11-1-3 of the bevel ruler should be kept parallel to the ruler slide bar 6-1.

[0126] S2: Probe 4 is placed on the left side of the web 2-1 to scan and inspect the bevel fillet weld 3. Specifically, the steps and methods described in S1-1 to S1-7 are used. Specifically, the left side of the web 2-1 is replaced by the right side of the web 2-2, and the right side of the web 2-2 is replaced by the left side of the web 2-1.

[0127] The ultrasonic detection reflected signal position positioning ruler of the present invention can also be used to measure the height value H of the bevel fillet weld 3 焊缝 The specific method is: based on S1-1, such as Figure 14 As shown, first slide the weld slider 9 so that the weld slider measuring edge 9-1 abuts against the web side weld toe 3-1, and fix the position of the weld slider 9 on the ruler measuring frame 6-2, and then use the multi-function ruler 11 to read the measured height value of the bevel fillet weld 3: During the measurement process, continuously adjust the angle between the square ruler 11-2 and the bevel ruler 11-1, so that the bevel ruler measuring abutment surface 11-1-5 abuts against the upper surface 5-13 of the angle ruler, the bevel ruler abutment edge 11-1-4 abuts against the angle ruler measuring edge 5-8, and the square ruler measuring edge 11-2-2 abuts against the weld slider abutment edge 9-2, and the value indicated by the weld height indicator line 9-3 is the bevel fillet weld height value H measured in S1-1. 焊缝 .

[0128] The ultrasonic detection reflected signal position positioning ruler of the present invention can also be used to determine the starting position value B2 of the secondary wave scanning. The specific method is: according to K×T 腹板 +H 焊缝 +(H 探头 +T 腹板 ) / tana-L5 Calculate the secondary wave scanning starting position value B2, make the value indicated by the scanning starting position line 10-3 equal to the secondary wave scanning starting position value B2, and then fix the position of the marking ruler 10 on the ruler 6, where: K-the tangent value of the probe sound beam emission angle, T 腹板 - Actual thickness of web, H 焊缝 - Actual height of weld, H 探头 -actual height of the weld, a-the angle between the flange and the web measured in S1-1, L5-actual leading edge length of the probe.

[0129] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make many possible changes and modifications to the technical solution of the present invention using the technical content disclosed above, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiment in accordance with the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. An ultrasonic detection reflected signal positioning ruler, characterized by: It includes an angle ruler (5), a straight ruler (6), a longitudinal slide ruler (7), a transverse slide ruler (8), and a multifunctional ruler (11); The front of the angle ruler (5) is marked with angle scale lines (5-6), the center point of the angle scale lines (5-6) is rotatably mounted on a hinge shaft (14), the angle ruler is provided with an angle ruler measuring edge (5-8) and an angle ruler diameter edge (5-5) for simulating the inner side surface (1-2) of the wing plate in parallel, the angle ruler (5) is provided with a wing plate depth scale line (5-10) in a direction perpendicular to the angle ruler diameter edge (5-5), and the zero scale lines of the angle ruler diameter edge (5-5) and the wing plate depth scale line (5-10) pass through the center point of the angle scale line (5-6); The ruler (6) comprises a ruler slide bar (6-1) and a ruler measuring frame (6-2); the ruler slide bar (6-1) is hinged to the angle ruler (5) via the hinge shaft (14); an angle indicator line (6-4) and a horizontal scale line (6-6) are provided on a side of the ruler slide bar (6-1) facing the angle ruler (5); the angle indicator line (6-4) and the angle scale line (5-6) cooperate to indicate the oblique angle between the inner side surface (1-2) of the wing plate and the left side surface (2-1) or the right side surface (2-2) of the web; and the horizontal scale line (6-6) is used to indicate the horizontal distance from the front end surface (4-1) of the probe to the inner side surface (1-2) of the wing plate; The ruler measuring frame (6-2) is provided with a ruler measuring edge (6-8), and the ruler measuring edge (6-8) is arranged parallel to the ruler sliding rod (6-1); The longitudinal slide (7) is slidably mounted on the ruler slide bar (6-1), and the transverse slide (8) is slidably mounted on the longitudinal slide (7). A horizontal indicator line (7-1-1) and a probe height scale line (7-5) are provided on the longitudinal slide (7). The horizontal indicator line (7-1-1) and the horizontal scale line (6-6) cooperate to indicate the horizontal distance from the front end surface (4-1) of the probe to the inner side surface (1-2) of the wing plate. The probe height scale line (7-5) is used to indicate the probe (4) The zero point of the probe height scale line (7-5) is located on the width direction center line of the ruler slide bar (6-1); a depth scale line (8-2) and a probe height indicator line (8-5) are provided on the transverse slide bar (8); the zero point of the depth scale line (8-2) is located on the end face of the transverse slide bar (8) close to the ruler (6); the zero point of the probe height scale line (7-5) is used to simulate the probe upper surface (4-2); the depth scale line (8-2) is used to indicate the depth display value H of the ultrasonic flaw detector 显示 ; The multifunctional ruler (11) is independently provided, comprising a beveled ruler (11-1) and a square ruler (11-2); the beveled ruler (11-1) is provided with a beveled opening (11-1-1), a beveled ruler measuring edge (11-1-3), a beveled ruler abutting edge (11-1-4), and a ruler abutting surface (11-1-5); the angle of the beveled opening (11-1-1) is less than or equal to the minimum angle between the wing plate (1) and the web plate (2); and the end of the beveled ruler (11-1) away from the beveled opening (11-1-1) is hinged to the front end of the square ruler (11-2).

2. The ultrasonic detection reflected signal positioning ruler according to claim 1, characterized in that: A weld slide (9) is slidably mounted on the ruler measuring frame (6-2); the weld slide (9) is provided with a weld slide measuring edge (9-1) and a weld slide abutting edge (9-2); the weld slide abutting edge (9-2) is flush with the ruler measuring edge (6-8).

3. The ultrasonic detection reflected signal positioning ruler according to claim 2, characterized in that: The two sides of the angle ruler are provided with a second arc (5-3), and the length of the weld slide ruler is ≥ Where: L2-the vertical distance from the ruler measuring edge to the center of the ruler light hole, θ 小 - minimum angle between flange and web, R2- radius of the second arc, L1- length of the side measured by angle ruler, L3- distance from the top edge measured by straight ruler to the diameter side of angle ruler, L 直测 - Ruler to measure the length of the sides.

4. The ultrasonic detection reflected signal positioning ruler according to claim 1, characterized in that: A marking ruler (10) is slidably mounted on the ruler slide bar (6-1), the marking ruler (10) being arranged parallel to the ruler slide bar (6-1), and a scanning starting position indicator line (10-3) and a scanning mark (10-4) are provided on a surface of the marking ruler (10) on a side close to the angle ruler (5).

5. The ultrasonic detection reflected signal positioning ruler according to claim 1, characterized in that: A reinforcing semicircular plate (5-9) is provided on the angle ruler (5), the center of the reinforcing semicircular plate (5-9) is located at the center point of the angle scale line (5-6), and the radius of the reinforcing semicircular plate (5-9) is less than the minimum height of the probe (4).

6. The ultrasonic detection reflected signal positioning ruler according to claim 1, characterized in that: The wing plate depth scale lines (5-10) are symmetrically distributed on both sides of the center of the angle ruler hole (5-1), and the shortest length of the wing plate depth scale lines (5-10) is ≥T 翼板 ×|tan(90°-a)|×2, where T 翼板 represents the maximum thickness of the flange, and a represents the angle between the flange and the web that deviates the most from 90°.

7. The ultrasonic detection reflected signal positioning ruler according to claim 1, characterized in that: The width of the ruler slide bar (6-1) is less than the minimum height of the probe × 2.

8. The ultrasonic detection reflected signal positioning ruler according to claim 1, characterized in that: A marking ruler cover plate (13) is installed on the ruler slide bar (6-1), and a fastening screw (15) is threadedly connected to the marking ruler cover plate (13). The fastening screw (15) is in contact with the marking ruler (10) and tightens the marking ruler (10) to fix the position of the marking ruler (10) on the ruler slide bar (6-1).

9. The ultrasonic detection reflected signal positioning ruler according to claim 1, characterized in that: The angle ruler (5) is provided with an annular hole (5-7) with the hinge shaft (14) as the center, and a fastening screw (15) passes through the annular hole (5-7) and is threadedly connected to the ruler slide rod (6-1), and the center of the hinge shaft between the ruler and the angle ruler, the center line of the fastening screw (15) and the angle indicating line (6-4) are all located on the center straight line of the width direction of the ruler slide rod (6-1).

10. The ultrasonic detection reflected signal positioning ruler according to claim 3, characterized in that: The vertical distance from the measuring edge of the ruler to the center of the hinge axis is ≥H 焊缝 +R2×cos[(90°-arcsin(L1 / 2÷R2)-(θ 大 -90°)], where: R2-radius of the second arc, H 焊缝 - Maximum height of weld, L1 - Length of angle ruler side, θ 大 - Maximum angle between the flange and the web.

11. The ultrasonic detection reflected signal positioning ruler according to claim 10, characterized in that: The vertical distance from the top of the measuring frame to the center of the hinge axis is ≥H 焊缝 -{R2×sin[90°-arcsin(L1 / 2÷R2)-(θ 大 -90°)]- {L2-R2×cos[(90°-arcsin(L1 / 2÷R2)-(θ 大 -90°)}×tan(θ 大 -90°)}, where: H 焊缝 - Maximum height of weld, R2- radius of second arc, L1- length of angle ruler measuring side, L2- vertical distance from ruler measuring side to the center of ruler light hole, θ 大 - Maximum angle between the flange and the web.

12. The ultrasonic detection reflected signal positioning ruler according to claim 1, characterized in that: A third arc (5-4) is provided on one side of the angle ruler (5), and the radius of the third arc is ≥(H 探 +T 腹板 +H 焊缝 ) / sin a, where: H 探 -Maximum probe height, T 腹板 - Maximum thickness of web, H 焊缝 -The maximum height of the weld is, a-the angle between the flange and the web with the largest deviation from 90°.

13. A method for locating horizontal distance of reflected signals based on the ultrasonic detection reflected signal positioning ruler according to any one of claims 1 to 12, characterized in that include: S1: When the probe (4) is placed on the right side of the web (2-2) to scan and inspect the bevel fillet weld (3), the following steps are specifically included: S1-1: Measure the angle between the inner side surface (1-2) of the wing plate and the left side surface (2-1) of the web: When measuring, place the measuring edge (6-8) of the ruler against the left side surface (2-1) of the web, rotate the angle ruler (5) so that the measuring edge (5-8) of the angle ruler is against the inner side surface (1-2) of the wing plate, keep the relative positions of the angle ruler (5) and the ruler (6) stable and fixed, and the corresponding value of the angle scale line (5-6) on the angle ruler (5) indicated by the angle indicator line (6-4) on the ruler (6) is the angle between the inner side surface (1-2) of the wing plate and the left side surface (2-1) of the web; S1-2: adjusting the position of the transverse slide (8) on the longitudinal slide (7) according to the height value of the probe (4) used: during the adjustment, the value indicated by the probe height indicator line (8-5) on the transverse slide (8) on the longitudinal slide (7) is equal to the probe height value used, and then fixing the position of the transverse slide (8) on the longitudinal slide (7); S1-3: According to the conventional ultrasonic testing operation method, the probe (4) is placed on the right side of the web (2-2) to scan and inspect the entire bevel fillet weld (3); S1-4: After a suspicious reflection signal is found, use a beveled ruler (11-1) to measure the horizontal distance L6 from the front end face of the probe (4-1) to the inner side face (1-2) of the wing plate. During the measurement, press the probe (4) to keep it fixed in position, and place the measuring edge (11-1-3) of the beveled ruler against the upper surface (4-2) of the probe. The measuring edge (11-1-3) of the beveled ruler is kept parallel to the right side face (2-2) of the web and the side face (4-3) of the probe. The end point of the beveled edge (11-1-1) of the beveled ruler is placed against the inner side face (1-2) of the wing plate. S1-5: According to the horizontal distance L6 between the front end surface of the probe (4-1) and the inner side surface of the wing plate (1-2) measured in step S1-4, adjust the position of the longitudinal slider (7) on the ruler slide bar (6-1): the value indicated by the horizontal indicator line (7-1-1) of the longitudinal slider is equal to the measured L6, and fix the position of the longitudinal slider (7) on the ruler slide bar (6-1); S1-6: According to the ultrasonic flaw detector depth display value H 显示 and horizontal display value L 显示 Determine the actual position of the suspected reflection signal: Place the oblique ruler (11-1) on the upper surface of the horizontal slide (8-7), align the measuring edge of the oblique ruler (11-1-3) with the depth scale line (8-2) of the horizontal slide, and the depth display value H of the ultrasonic flaw detector. 显示 The measuring edge (11-1-3) of the bevel ruler is kept parallel to the ruler slide bar (6-1), the end point of the bevel ruler (11-1-1) is against the diameter edge (5-5) of the angle ruler, and the horizontal distance L7 from the front side (8-4) of the horizontal slide to the diameter edge (5-5) of the angle ruler is read; S1-7: According to formula L 偏差 =L7-L 显示 Calculate and analyze the reflected signal position, when L 偏差 >0, it means that the reflected signal is located on the side of the weld wing plate fusion surface (3-3) that is biased towards the probe (4). 偏差 = 0, it means that the reflected signal position is located at the weld wing plate fusion surface (3-3), when L 偏差 <0, it means that the reflected signal is located on the side of the wing plate fusion surface (3-3) that is biased towards the outer side surface (1-1) of the wing plate. Use a beveled ruler to read the depth scale line (5-10) of the wing plate. When reading, keep the beveled ruler measuring edge (11-1-3) parallel to the ruler slide bar (6-1); S2: When the probe (4) is placed on the left side of the web (2-1) to scan and inspect the bevel fillet weld (3), it specifically includes: using the operating steps and methods described in S1-1 to S1-7, and when specifically performing the operation, the left side of the web (2-1) is replaced by the right side of the web (2-2), and the right side of the web (2-2) is replaced by the left side of the web (2-1).

14. The method for horizontal distance positioning using ultrasonic detection of reflected signals according to claim 13, characterized in that: On the basis of S1-1, first slide the weld ruler (9) so that the weld ruler measuring edge (9-1) abuts against the web side weld toe (3-1), and fix the position of the weld ruler (9) on the ruler measuring frame (6-2), and then use the multi-function ruler (11) to read the measured height value of the bevel fillet weld (3): During the measurement process, continuously adjust the angle between the square ruler (11-2) and the bevel ruler (11-1), respectively make the bevel ruler measuring abutment surface (11-1-5) abut against the upper surface (5-13) of the angle ruler, the bevel ruler abutment edge (11-1-4) abut against the angle ruler measuring edge (5-8), and the square ruler measuring edge (11-2-2) abut against the weld ruler abutment edge (9-2), and the value indicated by the weld height indicator line (9-3) is the height value H of the bevel fillet weld (3) measured in S1-1. 焊缝 .

15. The method for horizontal distance positioning using ultrasonic detection of reflected signals according to claim 13, characterized in that: Press K×T 腹板 +H 焊缝 +(H 探头 +T 腹板 ) / tana-L5 calculates the secondary wave scanning starting position value B2, makes the value indicated by the scanning starting position line (10-3) equal to the secondary wave scanning starting position value B2, and then fixes the position of the marking ruler (10) on the ruler (6), where: K is the tangent value of the probe sound beam emission angle, T 腹板 - Actual thickness of web, H 焊缝 - Actual height of weld, H 探头 -actual height of the weld, a-the angle between the flange and the web measured in S1-1, L5-actual leading edge length of the probe.

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