阅读说明：本技术 温度套管接管角焊缝和对接焊缝检测用相控阵超声试块 (Phased array ultrasonic test block for detecting fillet weld and butt weld of temperature sleeve pipe ) 是由 李佼佼 孟永乐 殷尊 侯召堂 吕一楠 安国栋 高延忠 于 2021-07-16 设计创作，主要内容包括：本发明公开了一种温度套管接管角焊缝和对接焊缝检测用相控阵超声试块,包括主管道、温度测点接管及温度套管；温度测点接管的一端通过角焊缝焊接于主管道的表面,温度套管的端部通过对接焊缝与温度套管的另一端相焊接,角焊缝的内部设置有气孔人工缺陷及根部未焊透人工缺陷,对接焊缝内部设置有坡口未熔合人工缺陷及裂纹人工缺陷,该试块能够用于相控阵仪器及相控阵探头组合的性能校验、检测灵敏度的调节、缺陷大小及深度的确定。(The invention discloses a phased array ultrasonic test block for detecting a fillet weld and a butt weld of a temperature sleeve pipe adapter, which comprises a main pipeline, a temperature measuring point adapter and a temperature sleeve pipe; one end of the temperature measuring point connecting pipe is welded on the surface of the main pipeline through an angle welding line, the end part of the temperature sleeve is welded with the other end of the temperature sleeve through a butt welding line, an air hole artificial defect and a root incomplete penetration artificial defect are arranged inside the angle welding line, a groove incomplete fusion artificial defect and a crack artificial defect are arranged inside the butt welding line, and the test block can be used for performance verification, detection sensitivity adjustment and defect size and depth determination of a phased array instrument and phased array probe combination.)

1. A phased array ultrasonic test block for detecting a fillet weld and a butt weld of a temperature sleeve pipe connecting pipe is characterized by comprising a main pipeline (1), a temperature measuring point connecting pipe (2) and a temperature sleeve pipe (3); one end of the temperature measuring point connecting pipe (2) is welded on the surface of the main pipeline (1) through a fillet weld (4), the end part of the temperature sleeve (3) is welded with the other end of the temperature sleeve (3) through a butt weld (5), an air hole artificial defect (41) and a root incomplete-welding artificial defect (42) are arranged inside the fillet weld (4), and a groove incomplete-fusion artificial defect (51) and a crack artificial defect (52) are arranged inside the butt weld (5).

2. The phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature sleeve pipe joint pipe according to claim 1, wherein the main pipeline (1) and the temperature measuring point joint pipe (2) are both made of ferrite alloy steel, and the temperature sleeve pipe (3) is made of austenitic stainless steel.

3. The phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature sleeve pipe adapter according to claim 1, wherein the fillet weld (4) is of a mounting structure, the fillet weld (4) adopts a full penetration welding mode, a 45-degree V-shaped groove is formed in the position where the end part of the temperature measuring point adapter (2) is in contact with the fillet weld (4), and the air hole artificial defect (41) and the root incomplete-penetration artificial defect (42) are respectively arranged on two sides of the temperature measuring point adapter (2).

4. The phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature sleeve pipe joint according to claim 3, wherein the air hole artificial defect (41) is a spherical hole with the diameter of 2mm, the distance between the center of the air hole artificial defect (41) and the upper surface of the main pipeline (1) is 3mm, and the distance between the center of the air hole artificial defect (41) and the outer wall of the temperature measuring point joint (2) is 4 mm.

5. The phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature sleeve pipe according to claim 3, wherein the root unwelded artificial defect (42) is an annular notch with the circumferential length of 5mm, the width of 2mm and the height of 1mm, the root unwelded artificial defect (42) is arranged at the root of the fillet weld (4), and the root unwelded artificial defect (42) is arranged along the circumferential direction of the fillet weld (4).

6. The phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature sleeve pipe joint according to claim 1, wherein the butt weld (5) adopts a full penetration welding mode, before welding, a 30-degree V-shaped groove is formed in the end parts of the temperature measuring point joint pipe (2) and the temperature sleeve pipe (3), and an artificial defect (51) without fusion of the groove and an artificial defect (52) with cracks are respectively positioned on two sides of the temperature measuring point joint pipe (2).

7. The phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature casing pipe according to claim 6, wherein the artificial defect (51) with the unfused groove is an annular notch with the circumferential length of 5mm, the width of 2mm and the height of 1mm, the artificial defect (51) with the unfused groove is arranged at the position of the groove of the temperature casing pipe (3), the artificial defect (51) with the unfused groove is arranged along the circumferential direction of the butt weld (5), and the distance between the center of the artificial defect (51) with the unfused groove and the inner wall of the temperature casing pipe (3) is 4 mm.

8. The phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature sleeve pipe joint according to claim 6, wherein the length of the crack artificial defect (52) is 5mm, the width of the crack artificial defect (52) is 0.5mm, the height of the crack artificial defect (52) is 2mm, the crack artificial defect (52) is arranged along the circumferential direction of the butt weld (5), and the distance between the center of the crack artificial defect (52) and the inner wall of the temperature measuring point joint pipe (2) is 4 mm.

9. The phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature sleeve pipe joint according to claim 1, wherein the outer diameter of the main pipe (1) is 500mm, and the wall thickness of the main pipe (1) is 50 mm;

the outer diameter of the temperature measuring point connecting pipe (2) is 32mm, and the wall thickness of the temperature measuring point connecting pipe (2) is 8 mm;

the outer diameter of the temperature sleeve (3) is 32mm, and the wall thickness of the temperature sleeve (3) is 8 mm.

10. The phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature sleeve adapter according to claim 1, wherein the height of the fillet weld (4) is 6mm, and the remaining height of the fillet weld (4) is 2 mm;

the width of the butt weld 5 is 8mm, and the height of the butt weld 5 is 2 mm.

Technical Field

The invention relates to an ultrasonic contrast test block, in particular to a phased array ultrasonic test block for detecting an angle weld and a butt weld of a temperature sleeve pipe adapter.

Background

At present, the temperature of main steam pipelines of ultra-supercritical units of thermal power plants exceeds 600 ℃, and with 650 ℃/700 ℃ ultra-supercritical power generation and development and application of high-temperature metal materials of key parts, steam parameters of four pipelines are further improved. The continuous flow of the high-temperature high-pressure steam in the pipeline requires continuous temperature measurement, so that the welding reliability of the temperature sleeve on the pipeline becomes an important guarantee for the safe operation of the unit.

FIG. 1 is a schematic diagram of a conventional temperature probe sleeve. Between temperature sleeve pipe and trunk line, carry out transitional coupling through one section nozzle, wherein the temperature sleeve pipe is austenite stainless steel material, and trunk line and nozzle are ferrite alloy steel material. The stainless steel temperature measuring point sleeve is connected with the connecting pipe seat through a dissimilar steel welding line by adopting a full penetration welding structure. The disadvantages and shortcomings of the medium temperature measuring point are that: 1) the stainless steel temperature sleeve and the connecting pipe seat belong to a dissimilar steel welding structure, the difference between the chemical components and the thermal expansion coefficient of the stainless steel temperature sleeve and the connecting pipe seat is large, and a fusion interface between a dissimilar steel welding seam and the connecting pipe seat is easy to crack; 2) the inner part of the stainless steel temperature sleeve is of a cantilever structure, and the stainless steel temperature sleeve vibrates under the action of steam in the operation process of a unit, so that the stainless steel temperature sleeve is broken at the upper part, or a welding seam interface is cracked and leaked even falls off due to incomplete fusion of a slight groove;

3) in the process of welding the temperature measuring point connecting pipe with the main pipeline, because the bevel angle is small, air holes are easily formed, the root part is not welded completely and other defects are easily caused, and stress concentration is easily generated in long-term operation, so that the joint line is cracked and leaked, and the safe and stable operation of a unit is seriously influenced. The three aspects can cause continuous expansion of welding defects of the temperature sleeve connecting pipe, cause leakage failure of the pipe seat, cause non-stop of the unit and cause great influence on the aspects of guaranteeing power supply, energy conservation and emission reduction.

The phased array ultrasonic detection technology adopts an electronic control mode to realize deflection and focusing of ultrasonic sound beams, and can realize the detection function of a conventional ultrasonic probe with multiple angles by using one probe. Aiming at the existing problems, a phased array ultrasonic comparison test block for detecting the fillet weld and the butt weld of the temperature measuring point connecting pipe needs to be designed, and the phased array ultrasonic comparison test block is used for verifying the combination performance of an instrument and a probe, adjusting the detection sensitivity and determining the size and the depth of a defect.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a phased array ultrasonic test block for detecting a fillet weld and a butt weld of a temperature sleeve pipe, which can be used for verifying the performance of a phased array instrument and a phased array probe combination, adjusting the detection sensitivity and determining the defect size and depth.

In order to achieve the purpose, the phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature sleeve pipe adapter comprises a main pipeline, a temperature measuring point adapter and a temperature sleeve pipe; one end of the temperature measuring point connecting pipe is welded on the surface of the main pipeline through a fillet weld, the end part of the temperature sleeve is welded with the other end of the temperature sleeve through a butt weld, the fillet weld is internally provided with an air hole artificial defect and a root incomplete-welding artificial defect, and the butt weld is internally provided with a groove incomplete-fusion artificial defect and a crack artificial defect.

The main pipeline and the temperature measuring point connecting pipe are made of ferrite alloy steel, and the temperature sleeve is made of austenitic stainless steel.

The fillet weld is of a placement type structure, the fillet weld adopts a full penetration welding mode, a V-shaped groove with an angle of 45 degrees is arranged at the position where the end part of the temperature measuring point connecting pipe is contacted with the fillet weld, and the artificial defect of the air hole and the artificial defect of incomplete root penetration are respectively arranged at two sides of the temperature measuring point connecting pipe.

The air hole artificial defect is a spherical hole with the diameter of 2mm, the distance between the center of the air hole artificial defect and the upper surface of the main pipeline is 3mm, and the distance between the center of the air hole artificial defect and the outer wall of the temperature measuring point connecting pipe is 4 mm.

The root incomplete-welding artificial defect is an annular notch groove with the circumferential length of 5mm, the width of 2mm and the height of 1mm, the root incomplete-welding artificial defect is arranged at the root of the fillet weld, and the root incomplete-welding artificial defect is arranged along the circumferential direction of the fillet weld.

The butt welding seam adopts a full penetration welding mode, before welding, a 30-degree V-shaped groove is formed in the end portions of the temperature measuring point connecting pipe and the temperature sleeve, and the groove unfused artificial defect and the crack artificial defect are respectively located on two sides of the temperature measuring point connecting pipe.

The artificial defect that the groove is not fused is an annular groove with the annular length of 5mm, the width of 2mm and the height of 1mm, the artificial defect that the groove is not fused is arranged at the groove of the temperature sleeve, the artificial defect that the groove is not fused is arranged along the circumferential direction of the butt weld, and the distance between the center of the artificial defect that the groove is not fused and the inner wall of the temperature sleeve is 4 mm.

The length of the crack artificial defect is 5mm, the width of the crack artificial defect is 0.5mm, the height of the crack artificial defect is 2mm, the crack artificial defect is arranged along the circumferential direction of the butt welding line, and the distance between the center of the crack artificial defect and the inner wall of the temperature measuring point connecting pipe is 4 mm.

The outer diameter of the main pipeline is 500mm, and the wall thickness of the main pipeline is 50 mm;

the outer diameter of the temperature measuring point connecting pipe is 32mm, and the wall thickness of the temperature measuring point connecting pipe is 8 mm;

the outer diameter of the temperature sleeve is 32mm, and the wall thickness of the temperature sleeve is 8 mm.

The height of the fillet weld is 6mm, and the remaining height of the fillet weld is 2 mm.

The width of the butt weld is 8mm, and the height of the butt weld is 2 mm.

The invention has the following beneficial effects:

when the phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature sleeve pipe is specifically operated, the phased array ultrasonic detector and the phased array ultrasonic probe are used for respectively completing scanning detection of the artificial defects of air holes and root incomplete penetration in the diagonal weld and scanning detection of the artificial defects of incomplete fusion and cracks of the butt weld groove, comparison is carried out according to the detection result and the actual position, depth and size of the artificial defects so as to calibrate the phased array detector and adjust the detection sensitivity, and the phased array detection process for the traditional temperature measuring point sleeve fillet weld and the butt weld can be respectively assisted to be formulated, so that the operation is convenient and the practicability is high.

Drawings

FIG. 1 is a schematic structural diagram of a conventional temperature measurement point bushing;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a cross-sectional view of the present invention.

Wherein, 1 is a main pipeline, 2 is a temperature measuring point connecting pipe, 3 is a temperature sleeve, 4 is a fillet weld, 5 is a butt weld, 41 is an air hole artificial defect, 42 is a root incomplete-welding artificial defect, 51 is a groove incomplete-fusion artificial defect, and 52 is a crack artificial defect.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.

Referring to fig. 2 and 3, the phased array ultrasonic test block for detecting the fillet weld and the butt weld of the temperature sleeve pipe adapter comprises a main pipeline 1, a temperature measuring point adapter 2 and a temperature sleeve 3; one end of the temperature measuring point connecting pipe 2 is welded on the surface of the main pipeline 1 through a fillet weld 4, the end part of the temperature sleeve 3 is welded with the other end of the temperature sleeve 3 through a butt weld 5, an air hole artificial defect 41 and a root incomplete-welding artificial defect 42 are arranged inside the fillet weld 4, and a groove incomplete-fusion artificial defect 51 and a crack artificial defect 52 are arranged inside the butt weld 5.

The main pipeline 1 and the temperature measuring point connecting pipe 2 are made of ferrite alloy steel, and the temperature sleeve 3 is made of austenitic stainless steel.

The fillet weld 4 is of a placement type structure, the fillet weld 4 is in a full penetration welding mode, a V-shaped groove with an angle of 45 degrees is arranged at the position where the end part of the temperature measuring point connecting pipe 2 is in contact with the fillet weld 4, for example, when the main pipeline 1 is made of P91, the welding wire can be ER 90S-B9; when the material of the main pipeline 1 is P22, ER55B2MnV can be selected as the welding wire; the air hole artificial defect 41 and the root incomplete-welding artificial defect 42 are respectively arranged at two sides of the temperature measuring point connecting pipe 2; the air hole artificial defect 41 is a spherical hole with the diameter of 2mm, the distance between the center of the air hole artificial defect 41 and the upper surface of the main pipeline 1 is 3mm, and the distance between the center of the air hole artificial defect 41 and the outer wall of the temperature measuring point connecting pipe 2 is 4 mm; the root incomplete penetration artificial defect 42 is an annular groove with the circumferential length of 5mm, the width of 2mm and the height of 1mm, the root incomplete penetration artificial defect 42 is arranged at the root of the fillet weld 4, and the root incomplete penetration artificial defect 42 is arranged along the circumferential direction of the fillet weld 4.

The butt welding seam 5 adopts a full penetration welding mode, before welding, a 30-degree V-shaped groove is formed in the end parts of the temperature measuring point connecting pipe 2 and the temperature sleeve 3, the welding material is a nickel-based welding material, and the incomplete fusion artificial defect 51 and the crack artificial defect 52 of the groove are respectively positioned on two sides of the temperature measuring point connecting pipe 2; the groove unfused artificial defect 51 is an annular groove with the circumferential length of 5mm, the width of 2mm and the height of 1mm, the groove unfused artificial defect 51 is arranged at the groove of the temperature sleeve 3, the groove unfused artificial defect 51 is arranged along the circumferential direction of the butt weld 5, and the distance between the center of the groove unfused artificial defect 51 and the inner wall of the temperature sleeve 3 is 4 mm; the length of the crack artificial defect 52 is 5mm, the width of the crack artificial defect 52 is 0.5mm, the height of the crack artificial defect 52 is 2mm, the crack artificial defect 52 is arranged along the butt weld 5 in a circumferential direction, and the distance between the center of the crack artificial defect 52 and the inner wall of the temperature measuring point connecting pipe 2 is 4 mm.

The outer diameter of the main pipeline 1 is 500mm, and the wall thickness of the main pipeline 1 is 50 mm; the outer diameter of the temperature measuring point connecting pipe 2 is 32mm, and the wall thickness of the temperature measuring point connecting pipe 2 is 8 mm; the outer diameter of the temperature sleeve 3 is 32mm, and the wall thickness of the temperature sleeve 3 is 8 mm; the height of the fillet weld 4 is 6mm, and the rest height of the fillet weld 4 is 2 mm; the width of the butt weld 5 is 8mm, and the height of the butt weld 5 is 2 mm.

The specific operation process of the invention is as follows:

1) the phased array ultrasonic probe with proper frequency is selected according to the thickness of the temperature sleeve 3, the probe wedge block with proper curvature is selected according to the outer diameter of the temperature sleeve 3, and if necessary, the surface of the probe wedge block is properly polished, so that the ultrasonic probe is well coupled with the surfaces of the temperature measuring point connecting pipe 2 and the temperature sleeve 3.

2) Finishing the first calibration aiming at the fillet weld 4, specifically: 21) arranging a phased array ultrasonic probe on the outer surface of the temperature measuring point connecting pipe 2, and adjusting the distance between the phased array ultrasonic probe and the fillet weld 4 to realize the full coverage of the sound beam of the fillet weld 4; 22) moving the phased array ultrasonic probe, scanning along the annular direction of the temperature measuring point connecting pipe 2, and completing scanning detection of the air hole artificial defect 41 and the root incomplete-welding artificial defect 42; 23) and comparing the detection result with the actual positions and depths of the air hole artificial defects 41 and the root incomplete penetration artificial defects 42 to calibrate the phased array detector, adjust the detection sensitivity and assist in formulating the phased array detection process for the fillet welds 4 of the structural temperature sleeve 3.

3) Finishing the second calibration aiming at the butt weld 5, specifically: 31) the phased array ultrasonic probe is placed on the outer surface of the temperature measuring point connecting pipe 2 or the temperature sleeve 3 of the test block, and the distance between the phased array ultrasonic probe and the butt weld 5 is adjusted to realize the full coverage of the sound beam of the butt weld 5; 32) moving the phased array ultrasonic probe, scanning along the circumferential direction of the butt weld 5, and completing scanning detection of the groove unfused artificial defect 51 and the crack artificial defect 52 arranged in the butt weld; 33) and comparing the detection result with the actual positions and depths of the groove unfused artificial defect 51 and the crack artificial defect 52 to calibrate the phased array detector, adjust the detection sensitivity and assist in formulating the phased array detection process for the butt weld 5 on the temperature sleeve 3 with the structure.