Phased array ultrasonic detection wheel for pipe end flaw detection

Abstract

The utility model discloses a phased array ultrasonic probe wheel for pipe end flaw detection, which comprises a mounting plate (1), the mounting plate (1) is connected with a probe support (3) through a guide rod (2), the probe support (3) is of an inverted U-shaped structure, the main body of the probe support (3) sequentially comprises a small-section section (31), a flaring section (32) and a large-section section (33) from top to bottom, the top of the small-section section (31) is connected with the guide rod (2), and the top of the flaring section (32) is connected with the large-section section (33). A spring (4) is arranged between the small-section section (31) and the mounting plate (1), and the lower part of the large-section section (33) is connected with a threading shaft (5); the threading shaft (5) is movably connected with the hub (7) on the corresponding side through a bearing (6), the outer ring of the hub (7) is connected with a pressing ring (8), and a wheel detection rubber sheet (9) is clamped between the hub (7) and the pressing ring (8); and a probe system (10) is connected between the hubs (7) on the two sides. The pipe end flaw detection device has the advantages that comprehensive flaw detection is carried out on the pipe end, the detection efficiency is improved, and pipe end flaw detection data are more comprehensive and complete.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe end flaw detection, and particularly relates to a phased array ultrasonic probe wheel for pipe end flaw detection. Background Art

[0002] The detection of the pipe end of a welded pipe needs to involve the longitudinal and transverse detection of the weld within 300 mm of the pipe end, the delamination detection of the base metal within 25 mm on both sides of the weld, the delamination and non-delamination detection of the base metal within 50 mm of the pipe end, and the detection of the pipe end bevel surface. The existing pipe end detection range is narrow, and one type of probe can only detect a certain type of defect, and it is impossible to obtain more defect information at the same time, resulting in incomplete data acquisition. Moreover, if more data is to be obtained, multiple types of probes need to be used for multiple manual detections, which undoubtedly reduces the detection efficiency and slows down the detection progress. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problems of single existing pipe end flaw detection equipment, incomplete defect detection, and limited detection efficiency. A phased array ultrasonic probe wheel for pipe end flaw detection is provided, which can perform comprehensive flaw detection on the pipe end, improve the detection efficiency, and make the pipe end defect detection data more comprehensive and complete.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A phased array ultrasonic probe wheel for pipe end flaw detection includes a mounting plate. A group of vertical guide rods are connected to the mounting plate. The lower ends of the guide rods are connected to a probe support. The probe support is an inverted U-shaped structure with its U-shaped opening facing downward. The main body of the probe support includes a small cross-section section, a flared section, and a large cross-section section from top to bottom. The top of the small cross-section section is connected to the guide rod, and a group of springs cooperating with the guide rods are arranged between the top surface of the small cross-section section and the bottom surface of the mounting plate. The springs are sleeved on the corresponding guide rods. The lower part of the large cross-section section is connected to a horizontal wire threading shaft, and the wire threading shaft is a hollow shaft structure;

[0006] The wire threading shaft is movably connected to the corresponding side hub through a bearing. A pair of liquid filling nozzles are connected to each side hub. A pressure ring is connected to the outer ring of the hub. A probe wheel rubber is clamped between the hub and the pressure ring. The probe wheel rubber is arranged in the U-shaped opening of the probe support;

[0007] A probe system is connected to the wire threading shaft between the two side hubs. The probe system includes a probe fixing frame. An angle adjustment handwheel is connected to the front part of the probe fixing frame. A middle ultrasonic probe is connected to the middle part of the probe fixing frame, and an obliquely installed phased array probe that is symmetric left and right is connected to each side. The middle ultrasonic probe is a combined probe. The obliquely installed phased array probe is incident on the steel pipe at an inclination angle of 20° to generate a 45° shear wave signal;

[0008] A pair of atomizing nozzles is also connected to the lower part of the probe holder, and the ejection ports of the atomizing nozzles are arranged facing the lower part of the probe wheel rubber.

[0009] Further, the outer wall of the small cross-section segment is a vertical plane, and the inner wall is provided with a first inclined surface. The outer wall of the flared section is an outwardly expanding inclined surface, and the inner wall is provided with a second inclined surface. The slopes of the first inclined surface and the second inclined surface are the same and are smoothly connected. The first and second inclined surfaces are arranged parallel to the inclined surface of the probe wheel rubber.

[0010] Further, the inner and outer walls of the large cross-section segment are both vertical plane structures, on which a shaft hole is provided. The threading shaft is horizontally arranged between the large cross-section segments through the shaft holes on both sides, and a retaining ring is connected to one side of the threading shaft extending out of the large cross-section segment. The atomizing nozzle is connected to the retaining ring through a nozzle holder.

[0011] Further, the liquid filling nozzle is inclined and arranged on the hub, and its outer port outside the hub is arranged in a direction away from the threading shaft, and its inner port inside the hub is arranged in a direction close to the threading shaft. The inner port faces the probe system between the hubs.

[0012] Further, each pair of liquid filling nozzles is symmetrically arranged on the outer ring of the hub with the central axis of the hub as the center.

[0013] Further, the intermediate ultrasonic probe includes an intermediate phased array probe and a pair of left phased array probes and right phased array probes arranged on both sides of the intermediate phased array probe. The sound beams emitted by the intermediate phased array probe, the left phased array probe, the right phased array probe and the inclined phased array probes on both sides of the probe fixing frame intersect at a point.

[0014] In the technical solution of the present utility model, by adding a combined probe in the probe wheel, the influence of the ovality and unevenness inside the pipe end on ultrasonic flaw detection can be adapted. Only a small amount of water is required at the bottom of the probe wheel to achieve ultrasonic coupling, and the pipe end groove can also be flaw detected. The intermediate phased array probe of the present utility model is a combined probe. After passing through a certain water layer, the intermediate phased array probe vertically enters the steel pipe, and the intermediate phased array probe is used to detect delamination defects. The phased array probes on both sides are two probes with symmetrically placed inclined angles, which are used to detect transverse defects in two different directions. The inclined phased array probe can enter the steel pipe at a 20° inclined angle to generate a 45° shear wave signal, which is used to detect longitudinal defects in the steel pipe. The defect detection is more comprehensive and the detection efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural diagram of the phased array ultrasonic probe wheel for pipe end flaw detection of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the probe wheel system of the present utility model;

[0017] Figure 3Schematic diagram of the probe layout of the phased array ultrasonic probe wheel for pipe end flaw detection of the present utility model;

[0018] Figure 4 Schematic diagram of the emission angle of the obliquely installed phased array probe of the present utility model. Detailed implementation manners Embodiment

[0019] To make the present utility model clearer and more understandable, the phased array ultrasonic probe wheel for pipe end flaw detection of the present utility model will be further described below in conjunction with the accompanying drawings. The specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] Refer to Figure 1 and Figure 2 A phased array ultrasonic probe wheel for pipe end flaw detection includes a mounting plate 1 on one side, and is characterized in that:

[0021] A group of vertical guide rods 2 are connected to the mounting plate 1. The lower end of the guide rod 2 is connected to a probe support 3. The probe support 3 is an inverted U-shaped structure with its U-shaped opening 3a facing downward. The main body of the probe support 3 successively includes a small cross-section section 31, a flared section 32 and a large cross-section section 33 from top to bottom. The outer wall of the small cross-section section 31 is a vertical plane, and the inner wall is provided with an inclined surface 31a. The outer wall of the flared section 32 is an outwardly expanding inclined surface, and the inner wall is provided with an inclined surface 32a. The slopes of the inclined surface 31a and the inclined surface 32a are the same and are smoothly connected;

[0022] The top of the small cross-section section 31 is connected to the guide rod 2, and a group of springs 4 cooperating with the guide rod 2 are provided between the top surface of the small cross-section section 31 and the bottom surface of the mounting plate 1. The springs 4 are sleeved on the corresponding guide rods 2;

[0023] Both the inner and outer walls of the large cross-section section 33 are vertical plane structures. An axial hole 33a is provided thereon. A threading shaft 5 is horizontally arranged between the large cross-section sections 33 through the axial holes 33a on both sides. The threading shaft 5 is a hollow shaft structure. A retaining ring 13 is connected to one side of the threading shaft 5 extending out of the large cross-section section 33. An atomizing nozzle 12 is connected to the retaining ring 13 through a nozzle support 14, and its jet port is arranged facing downward of the probe rubber 9;

[0024] The threading shaft 5 is movably connected to the corresponding side wheel hub 7 through a bearing 6. A pair of inclined liquid adding nozzles 11 are connected to each side wheel hub 7. Each pair of liquid adding nozzles 11 are symmetrically arranged on the outer ring of the wheel hub 7 with the central axis of the wheel hub 7 as the center. Their outer ports 11a outside the wheel hub 7 are arranged in the direction away from the threading shaft 5, and their inner ports 11b inside the wheel hub 7 are arranged in the direction close to the threading shaft 5;

[0025] The outer ring of the hub 7 is connected with a pressure ring 8, and a probe wheel rubber 9 is sandwiched between the hub 7 and the pressure ring 8. The probe wheel rubber 9 is arranged in the U-shaped opening 3a of the probe head support 3; the first inclined surface 31a and the second inclined surface 32a are arranged parallel to the inclined surface of the probe wheel rubber 9;

[0026] See Figure 1 、 Figure 2 and Figure 3 , a probe head system 10 is connected to the wire threading shaft 5 between the hubs 7 on both sides. The inner port 11b of the liquid filling nozzle 11 faces the probe head system 10 between the hubs 7. The probe head system 10 includes a probe head fixing frame 101. An angle adjustment handwheel 102 is connected to the front part of the probe head fixing frame 101. An intermediate ultrasonic probe 103 is connected to the middle part of the probe head fixing frame 101, and a pair of symmetrically installed phased array probes 104 are connected to both sides respectively;

[0027] In this embodiment, by moving the angle adjustment handwheel 102, the angle of the obliquely installed phased array probe 104 can be adjusted so that the sound beams emitted by the probe heads intersect at a point;

[0028] The intermediate ultrasonic probe 103 is a combined probe, which includes an intermediate phased array probe 1031 and a pair of left phased array probes 1032 and right phased array probes 1033 arranged on both sides of the intermediate phased array probe. The sound beams emitted by the intermediate phased array probe 1031, the left phased array probe 1032, the right phased array probe 1033 and the obliquely installed phased array probes 104 on both sides of the probe head fixing frame 101 intersect at a point.

[0029] See Figure 3 and Figure 4 , the inside of the probe wheel is filled with coupling liquid. The probe wheel contains three phased array probes. The three phased array probes are assembled on the probe head fixing frame 101. The sound waves emitted by the three phased array probes intersect at a point at the bottom of the probe wheel. Among them, the intermediate phased array probe 103 is a combined probe. After passing through a certain water layer, the intermediate phased array probe is vertically incident on the steel pipe. The intermediate phased array probe is used to detect delamination defects; the left and right phased array probes on both sides are two probes with symmetrically placed inclined angles, which are used to detect transverse defects in two different directions; the two sides of the probe head fixing frame are obliquely installed phased array probes 104. In the wheel-type probe, it is incident on the steel pipe at an inclined angle of 20°, generating a 45° shear wave signal, which is used to detect longitudinal defects in the steel pipe.

[0030] The phased array ultrasonic probe wheel of the present utility model has a wider detection range for pipe end flaw detection, higher detection efficiency, more comprehensive defect data, and can also adapt to the influence of the ovality and unevenness inside the pipe end on ultrasonic flaw detection.

[0031] In addition to the above embodiments, the present utility model may also have other embodiments. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present utility model.

Claims

1. A phased array ultrasonic probe wheel for pipe end flaw detection, comprising a mounting plate (1), characterized in that: A group of vertical guide rods (2) are connected to the mounting plate (1), the lower ends of the guide rods (2) are connected to a probe bracket (3), the probe bracket (3) is an inverted U-shaped structure, and its U-shaped opening (3a) is arranged downwardly, the main body of the probe bracket (3) comprises, from top to bottom, a small cross-section section (31), a flared section (32) and a large cross-section section (33), the top of the small cross-section section (31) is connected to the guide rod (2), and a group of springs (4) cooperating with the guide rod (2) are arranged between the top surface of the small cross-section section (31) and the bottom surface of the mounting plate (1), the springs (4) are sleeved on the corresponding guide rods (2), and the lower part of the large cross-section section (33) is connected to a horizontal threading shaft (5), and the threading shaft (5) is a hollow shaft structure; The threading shaft (5) is movably connected to the wheel hub (7) on the corresponding side through the bearing (6), and a pair of liquid filling nozzles (11) are connected to the wheel hub (7) on each side. The outer ring of the wheel hub (7) is connected to a pressure ring (8), and a probe wheel rubber (9) is sandwiched between the wheel hub (7) and the pressure ring (8). The probe wheel rubber (9) is arranged in the U-shaped opening (3a) of the probe bracket (3); A probe system (10) is connected to the threading shaft (5) between the wheel hubs (7) on both sides. The probe system (10) comprises a probe fixing frame (101). The front portion of the probe fixing frame (101) is connected to an angle adjustment hand wheel (102). The middle portion of the probe fixing frame (101) is connected to an intermediate ultrasonic probe (103). Both sides are respectively connected to a left-right symmetrical obliquely mounted phased array probe (104). The intermediate ultrasonic probe (103) is a combined probe. The obliquely mounted phased array probe (104) is incident on the steel pipe at an inclination angle of 20° to generate a 45° shear wave signal. A pair of atomizing nozzles (12) are also connected to the lower part of the probe bracket (3), and the spraying ports of the atomizing nozzles (12) are arranged toward the lower part of the probe wheel rubber (9).

2. The phased array ultrasonic probe wheel for pipe end flaw detection according to claim 1 is characterized in that: The outer wall of the small cross-section section (31) is a vertical plane, and the inner wall is provided with a first inclined surface (31a); the outer wall of the expanded section (32) is an outwardly expanded inclined surface, and the inner wall is provided with a second inclined surface (32a); the inclination of the first inclined surface (31a) and the second inclined surface (32a) are the same and smoothly connected, and the first and second inclined surfaces are arranged parallel to the inclined surface of the probe wheel rubber (9).

3. The phased array ultrasonic probe wheel for pipe end flaw detection according to claim 2 is characterized in that: The inner and outer walls of the large cross-section section (33) are both vertical planar structures, and are provided with shaft holes (33a). The threading shaft (5) is horizontally arranged between the large cross-section sections (33) through the shaft holes (33a) on both sides, and a retaining ring (13) is connected to the side of the threading shaft (5) extending out of the large cross-section section (33). The atomizing nozzle (12) is connected to the retaining ring (13) via a nozzle bracket (14).

4. The phased array ultrasonic probe wheel for pipe end flaw detection according to any one of claims 1 to 3, characterized in that: The liquid adding nozzle (11) is arranged obliquely on the wheel hub (7), and its outer port (11a) located outside the wheel hub (7) is arranged in a direction away from the threading shaft (5), and the inner port (11b) located inside the wheel hub (7) is arranged in a direction close to the threading shaft (5), and the inner port (11b) faces the probe system (10) between the wheel hubs (7).

5. The phased array ultrasonic probe wheel for pipe end flaw detection according to claim 4 is characterized in that: Each pair of liquid adding nozzles (11) is symmetrically arranged on the outer ring of the wheel hub (7) with the central axis of the wheel hub (7) as the center.

6. The phased array ultrasonic probe wheel for pipe end flaw detection according to any one of claims 1 to 3, characterized in that: The intermediate ultrasonic probe (103) comprises an intermediate phased array probe (1031) and a pair of left phased array probes (1032) and right phased array probes (1033) arranged on both sides of the intermediate phased array probe (1031); sound beams emitted by the intermediate phased array probe (1031), the left phased array probe (1032), the right phased array probe (1033) and the obliquely mounted phased array probes (104) on both sides of the probe fixing frame (101) intersect at one point.

Images