A pipeline phased array ultrasonic flaw detection device

Abstract

The present invention discloses a pipeline phased array ultrasonic flaw detection device, which relates to the field of ultrasonic phased array detection technology, and comprises: a bracket; a mounting seat, which is arranged on the bracket; a phased array probe mechanism, which comprises a first phased array probe device, a second phased array probe device and a third phased array probe device, which are installed on the mounting seat; wherein the axis of the first probe is perpendicular to the water surface in the first water bag, and the angle between the axis of the second probe and the water surface in the second water bag and the angle between the axis of the third probe and the water surface in the third water bag are both acute angles. The present invention can realize the coupled monitoring of the phased array longitudinal wave straight probe and the oblique shear wave probe, and ensure the reliability of the phased array detection data.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic phased array detection, and in particular to a pipeline phased array ultrasonic flaw detection device. Background Art

[0002] Pipeline ultrasonic testing mainly involves various defect detection of pipeline welds and parent materials, such as circumferential defects, axial defects and delamination defects, etc. Therefore, multiple probes such as shear wave oblique probes and longitudinal wave straight probes are required for joint detection. For automated ultrasonic testing, coupling is the primary condition. For longitudinal wave straight probes, coupling monitoring can be achieved by monitoring the bottom wave, but for shear wave oblique probes, there is often no effective coupling monitoring method. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a pipeline phased array ultrasonic flaw detection device.

[0004] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0005] A pipeline phased array ultrasonic flaw detection device, comprising:

[0006] Bracket;

[0007] A mounting seat, arranged on the bracket;

[0008] A phased array probe mechanism, comprising a first phased array probe device, a second phased array probe device and a third phased array probe device mounted on the mounting seat, wherein the second phased array probe device and the third phased array probe device are respectively located on both sides of the first phased array probe device, the first phased array probe device comprises a first water bag and a first probe mounted in the first water bag, the second phased array probe device comprises a second water bag and a second probe mounted in the second water bag, and the third phased array probe comprises a third water bag and a third probe mounted in the third water bag;

[0009] Among them, the axis of the first probe is perpendicular to the water surface in the first water bag, the angle between the axis of the second probe and the water surface in the second water bag, and the angle between the axis of the third probe and the water surface in the third water bag are both acute angles, and the axis of the second probe and the axis of the third probe are symmetrically arranged with the axis of the first probe as the symmetry axis.

[0010] As a preferred solution of the pipeline phased array ultrasonic flaw detection device of the present invention, the first water bag is fixedly mounted on the mounting seat, and the second water bag and the third water bag are rotatably mounted on the mounting seat, so that the angle between the axis of the second water bag and the third water bag and the axis of the first water bag is adjustable.

[0011] As a preferred solution of the pipeline phased array ultrasonic flaw detection device of the present invention, wherein: the second water bag and the third water bag are both fixedly mounted with connecting rods, and the connecting rods are both hinged to the mounting seat;

[0012] A positioning hole is provided on the connecting rod, an arc-shaped waist hole matching with the positioning hole is provided on the mounting seat, and a positioning bolt is detachably installed in the positioning hole.

[0013] As a preferred solution of the pipeline phased array ultrasonic flaw detection device of the present invention, wherein: a slide groove parallel to the axis of the first probe is provided on the bracket, and the mounting seat is slidably installed in the slide groove.

[0014] As a preferred solution of the pipeline phased array ultrasonic flaw detection device of the present invention, a return spring is connected between the mounting seat and the bracket.

[0015] As a preferred solution of the pipeline phased array ultrasonic flaw detection device of the present invention, the end surfaces of the first water bag, the second water bag and the third water bag facing the workpiece to be tested are all provided with wear-resistant blocks or flexible gaskets.

[0016] As a preferred solution of the pipeline phased array ultrasonic flaw detection device of the present invention, the wear-resistant block or flexible gasket can be detachably installed on the end faces of the first water bag, the second water bag and the third water bag facing the workpiece to be tested.

[0017] As a preferred solution of the pipeline phased array ultrasonic flaw detection device of the present invention, the first probe is a 64-element probe, and the second probe and the third probe are 32-element probes.

[0018] The beneficial effects of the present invention are:

[0019] (1) In the present invention, the angle between the axis of the second probe and the water surface in the second water bag and the angle between the axis of the third probe and the water surface in the third water bag are both acute angles. The ultrasonic sound beams emitted by the second probe and the third probe are deflected by the water bag and transformed into 45° shear waves, which enter the workpiece to realize the axis defect detection of the pipe base material and the weld. At the same time, the coupling monitoring of the left and right phased array probes can be realized by the second probe transmitting or receiving and the third probe receiving or transmitting.

[0020] (2) In the present invention, the angles of the second probe and the third probe can be adjusted according to the thickness of the workpiece to be detected, so as to receive multiple reflected echoes and further realize coupled monitoring of pipes with different diameters.

[0021] (3) The present invention can select the component at the lower end of the water bag that contacts the workpiece according to the type of the workpiece to be tested, thereby ensuring the service life of the probe and the water bag and the flaw detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 A schematic diagram of the structure of a pipeline phased array ultrasonic flaw detection device provided by the present invention;

[0024] Figure 2 A schematic structural diagram of a first phased array probe device in a pipeline phased array ultrasonic flaw detection device provided by the present invention;

[0025] Figure 3 A schematic diagram of the structure of a second phased array probe device in the pipeline phased array ultrasonic flaw detection device provided by the present invention;

[0026] Figure 4 A schematic diagram of coupling monitoring of a first phased array probe device in a pipeline phased array ultrasonic flaw detection device provided by the present invention;

[0027] Figure 5 and Figure 6 A schematic diagram of coupling monitoring between a second phased array probe device and a third phased array probe device in the pipeline phased array ultrasonic flaw detection device provided by the present invention;

[0028] Among them: 100, bracket; 200, mounting seat; 300, first phased array probe device; 400, second phased array probe device; 500, third phased array probe device; 310, first water bag; 320, first probe; 330, water inlet; 410, second water bag; 420, second probe; 600, connecting rod; 610, positioning bolt; 210, arc waist hole; 110, slide groove; 700, wear-resistant block. DETAILED DESCRIPTION

[0029] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific implementation modes and in combination with the accompanying drawings.

[0030] Figure 1The schematic diagram of the structure of the pipeline phased array ultrasonic flaw detection device provided in the embodiment of the present application. The device includes a bracket 100, a mounting seat 200 and a phased array probe mechanism. The phased array probe mechanism can realize deflection and focusing in different directions to realize the detection of circumferential, axial and delamination defects.

[0031] Specifically, the mounting base 200 is mounted on the bracket 100 . The phased array probe mechanism is mounted on the mounting base 200 .

[0032] The phased array probe mechanism includes a first phased array probe device 300, a second phased array probe device 400 and a third phased array probe device 500. Figure 1 The second phased array probe device 400 and the third phased array probe device 500 are respectively located on the left and right sides of the first phased array probe device 300 .

[0033] See also Figure 2 The first phased array probe device 300 includes a first water bag 310 and a first probe 320 installed in the first water bag 310. The first water bag 310 contains a water layer of a certain thickness. A water inlet 330 is provided on the first water bag 310. The axis of the first probe 320 is perpendicular to the water surface in the first water bag 310, that is, the axis of the first probe 320 extends in the vertical direction. Through the setting of multiple focal laws of the phased array, 0°, +45° and -45° line scans are realized to detect the layered detection and circumferential defect detection of the pipe base material and weld. At the same time, the probe is specially set with a set of focal laws, which are directly incident into the workpiece to realize coupled monitoring.

[0034] See also Figure 3 The second phased array probe device 400 includes a second water bag 410 and a second probe 420 installed in the second water bag 410. The second water bag 410 also includes a water layer of a certain thickness. The second water bag 410 is also provided with a water inlet 330. The second probe 420 is installed obliquely in the second water bag 410, that is, the angle between the axis of the second probe 420 and the water surface in the second water bag 410 is an acute angle. The third phased array probe device 500 includes a third water bag and a third probe installed in the third water bag.

[0035] It should be noted that the structure of the third phased array probe device 500 is completely the same as that of the second phased array probe device 400. Figure 1 The axis of the second probe 420 and the axis of the third probe are symmetrically arranged with the axis of the first probe 320 as the symmetry axis.

[0036] The ultrasonic sound beams emitted by the second probe 420 and the third probe are deflected by the water bag and transformed into 45° transverse waves, which enter the workpiece to realize the axial defect detection of the pipe base material and the weld. At the same time, the second probe 420 and the third probe are placed facing each other, and a set of focusing laws are specially set, so that the coupling monitoring of the second probe 420 and the third probe can be realized by the second probe 420 (or the third probe) transmitting and the third probe (or the second probe 420) receiving, see Figure 5 .

[0037] Preferably, the angles of the second probe 420 and the third probe can be adjusted according to the thickness of the workpiece to be detected, so as to receive multiple reflected echoes and thus realize coupled monitoring of pipes with different diameters, see Figure 6 .

[0038] In this embodiment, a connecting rod 600 is fixedly mounted on the second water bag 410 and the third water bag, and the connecting rod 600 is hinged to the mounting seat 200, see Figure 1 . A positioning hole is provided at the upper end of the connecting rod 600. Correspondingly, arc-shaped waist holes 210 matching the positioning holes are provided at both the left and right ends of the mounting seat 200. In order to adapt to the detection of pipes with different diameters, the position of the arc-shaped waist hole 210 can be adjusted to achieve a better fit between the probe and the pipe diameter. When the connecting rod 600 rotates around the hinge axis, the positioning hole thereon is always aligned with the arc-shaped waist hole 210 on the mounting seat 200. At the same time, a positioning bolt 610 is detachably installed in the positioning hole. When the connecting rod 600 is rotated to a suitable angle, the positioning bolt 610 can be inserted into the aligned positioning hole and the arc-shaped waist hole 210, and locked by a locking nut, thereby achieving the fixing of the angles of the second probe 420 and the third probe.

[0039] Better, see Figure 1 , a slide groove 110 extending in the vertical direction is provided on the bracket 100. The mounting seat 200 is slidably installed in the slide groove 110, so that the mounting seat 200 can be raised and lowered along the slide groove 110. When it is necessary to perform flaw detection on the workpiece, by pressing the bracket 100 down to the surface of the workpiece, the first water bag 310, the second water bag 410 and the third water bag can be attached to the surface of the workpiece. At the same time, a reset spring is connected between the mounting seat 200 and the bracket 100. When the flaw detection operation is completed, the bracket 100 is picked up, and the elastic force applied to the mounting seat 200 by the reset spring can automatically reset the mounting seat 200.

[0040] In addition, wear-resistant blocks 700 or flexible gaskets are provided on the end faces of the first water bag 310, the second water bag 410 and the third water bag facing the workpiece to be tested, that is, on the lower end faces. When the workpiece to be tested is a pipe with a larger diameter, in order to ensure the service life of the probe, wear-resistant blocks 700 are installed on the end faces of the first water bag 310, the second water bag 410 and the third water bag facing the workpiece to be tested. When the workpiece to be tested is a pipe with a smaller diameter, in order to ensure the flaw detection accuracy of the pipe, flexible gaskets are installed on the end faces of the first water bag 310, the second water bag 410 and the third water bag facing the workpiece to be tested.

[0041] It should be noted that the wear-resistant block 700 or the flexible gasket can be detachably mounted on the end surfaces of the first water bag 310, the second water bag 410 and the third water bag facing the workpiece to be tested. Figure 4 In this embodiment, the lower end surface of the water bag is installed with a wear-resistant block 700, and the wear-resistant block 700 is detachably installed on the lower end of the water bag by bolts.

[0042] In this embodiment, the first probe 320 is a 64-element probe, and the second probe 420 and the third probe are 32-element probes.

[0043] Therefore, the technical solution of the present application can realize the coupled monitoring of the phased array longitudinal wave straight probe and the oblique shear wave probe, ensuring the reliability of the phased array detection data.

[0044] In addition to the above embodiments, the present invention may also have other implementation modes; any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A pipeline phased array ultrasonic flaw detection device, characterized in that: include: Bracket (100); A mounting seat (200) disposed on the bracket (100); A phased array probe mechanism, comprising a first phased array probe device (300), a second phased array probe device (400) and a third phased array probe device (500) mounted on the mounting seat (200), the second phased array probe device (400) and the third phased array probe device (500) being located on both sides of the first phased array probe device (300), respectively; the first phased array probe device (300) comprising a first water bag (310) and a first probe (320) mounted in the first water bag (310), the second phased array probe device (400) comprising a second water bag (410) and a second probe (420) mounted in the second water bag (410), and the third phased array probe comprising a third water bag and a third probe mounted in the third water bag; wherein the axis of the first probe (320) is perpendicular to the water surface in the first water bag (310), the angle between the axis of the second probe (420) and the water surface in the second water bag (410) and the angle between the axis of the third probe and the water surface in the third water bag are both acute angles, and the axis of the second probe (420) and the axis of the third probe are symmetrically arranged with the axis of the first probe (320) as the axis of symmetry; The first water bag (310) is fixedly mounted on the mounting seat (200), and the second water bag (410) and the third water bag are both rotatably mounted on the mounting seat (200), so that the angle between the axis of the second water bag (410) and the third water bag and the axis of the first water bag (310) is adjustable; The second water bag (410) and the third water bag are both fixedly mounted with connecting rods (600), and the connecting rods (600) are both hinged to the mounting seat (200); The connecting rod (600) is provided with a positioning hole, the mounting seat (200) is provided with an arc-shaped waist hole (210) matching the positioning hole, and a positioning bolt (610) is detachably installed in the positioning hole; The bracket (100) is provided with a slide groove (110) parallel to the axis of the first probe (320), and the mounting seat (200) is slidably mounted in the slide groove (110); A return spring is connected between the mounting seat (200) and the bracket (100).

2. The pipeline phased array ultrasonic flaw detection device according to claim 1 is characterized in that: The end surfaces of the first water bag (310), the second water bag (410) and the third water bag facing the workpiece to be measured are all provided with wear-resistant blocks (700) or flexible gaskets.

3. The pipeline phased array ultrasonic flaw detection device according to claim 2 is characterized in that: The wear-resistant block (700) or the flexible gasket can be detachably mounted on the end surfaces of the first water bag (310), the second water bag (410) and the third water bag facing the workpiece to be measured.

4. The pipeline phased array ultrasonic flaw detection device according to claim 1 is characterized in that: The first probe (320) is a 64-element probe, and the second probe (420) and the third probe are 32-element probes.

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