Ultrasonic detection simulation tool for hot extrusion nozzle of nuclear power super pipeline

Abstract

The utility model discloses an ultrasonic detection simulation tool for a hot extrusion pipe nozzle of a nuclear power super pipeline, which comprises a simulation sample, and fan-shaped through holes are processed on the pipeline and around the pipe nozzle; artificial grooves are respectively formed above and below the inner wall of the R arc in the 0-degree direction of the transition area of the pipe nozzle, and artificial grooves are respectively formed above and below the outer wall of the R arc; the upper and lower parts of the inner wall of the R arc in the 45-degree direction of the transition area of the pipe nozzle are respectively provided with an artificial groove, and the upper and lower parts of the outer wall of the R arc are respectively provided with an artificial groove; the upper and lower portions of the inner wall of the R arc in the 90-degree direction of the transition area of the pipe nozzle are each provided with an artificial groove, and the upper and lower portions of the outer wall of the R arc are each provided with an artificial groove. The simulation tool is simple in structure and high in operability, effectively ensures that ultrasonic waves cover the whole volume of the hot extrusion pipe nozzle, meets the detection sensitivity and sonic path distance requirements of all parts, and ensures the product quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of nondestructive testing in the metallurgical manufacturing industry, and particularly relates to an ultrasonic testing simulation tooling for a hot extrusion nozzle of a nuclear power super pipeline. Background Technique

[0002] The nuclear power super pipeline refers to a section of saturated steam pipeline starting from the containment mechanical penetration of the main steam pipeline outside the reactor containment and ending at the first weld downstream of the main steam pipeline. Such a nuclear power super pipeline not only has a long pipeline, but also has hot extrusion nozzles with different numbers and sizes distributed on each pipe segment. These hot extrusion nozzles have complex structural shapes and large differences in size specifications. With ordinary ultrasonic testing methods, it is impossible to ensure that the ultrasonic beam completely covers the entire volume of the hot extrusion nozzle, and the detection sensitivity and sound path compliance of each part of the nozzle cannot be guaranteed, resulting in great risks of misjudgment and missed detection. Summary of the Invention

[0003] The purpose of the utility model is to solve the above technical problems and provide an ultrasonic testing simulation tooling for a hot extrusion nozzle of a nuclear power super pipeline with a simple structure and strong operability.

[0004] To achieve the above purpose, the utility model provides an ultrasonic testing simulation tooling for a hot extrusion nozzle of a nuclear power super pipeline, including a simulation specimen, which is the same as the size, process, and heat treatment of the nozzle to be inspected. Sector-shaped through holes are processed on the pipeline around the nozzle; on the inner wall and outer wall of the R arc at the 0° direction in the transition area of the nozzle, one artificial groove is made on the upper and lower parts respectively, and a total of four artificial grooves in the 0° direction are made; on the inner wall and outer wall of the R arc at the 45° direction in the transition area of the nozzle, one artificial groove is made on the upper and lower parts respectively, and a total of four artificial grooves in the 45° direction are made; on the inner wall and outer wall of the R arc at the 90° direction in the transition area of the nozzle, one artificial groove is made on the upper and lower parts respectively, and a total of four artificial grooves in the 90° direction are made.

[0005] Further, on the outer wall in the circumferential direction of the nozzle seat area of the nozzle, one transverse artificial groove is made, and one longitudinal artificial groove is made in the axial direction of the outer wall; on the inner wall in the circumferential direction of the nozzle seat area of the nozzle, one transverse artificial groove is made, and one longitudinal artificial groove is made in the axial direction of the inner wall.

[0006] Further, the sector-shaped through holes surround 1 / 4 - 1 / 3 of the circumference of the nozzle.

[0007] Further, the upper artificial groove on the inner wall and the upper artificial groove on the outer wall in the transition area of the nozzle are arranged correspondingly, and correspondingly, the lower artificial groove on the inner wall and the lower artificial groove on the outer wall are arranged correspondingly.

[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows: By means of a simulation tooling and in combination with actual ultrasonic measurement, the present utility model ensures the reliability of the ultrasonic coverage range and the scanning direction, improves the detection ability and the detection probability of defects of specific types and specific sizes, and greatly reduces the risks of misjudgment and missed detection; the simulation tooling has a simple structure and strong operability, effectively ensures that the ultrasonic waves cover the entire volume of the hot extrusion nozzle, meets the detection sensitivity and sound path requirements of each part, and guarantees the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic structural diagram of a hot extrusion nozzle of a nuclear power super pipeline;

[0010] Figure 2 It is a schematic diagram of a sector-shaped through hole of the simulation tooling of the present utility model;

[0011] Figure 3 It is a schematic diagram of an artificial groove of the simulation tooling of the present utility model;

[0012] Figure 4 It is a schematic diagram of a probe scan. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0014] As Figure 1 、 2 shown, the ultrasonic detection simulation tooling for the hot extrusion nozzle of the nuclear power super pipeline includes a simulation specimen, and the size, process, and heat treatment of the simulation specimen are the same as those of the nozzle to be inspected. For the convenience of engraving artificial defects and ultrasonic detection, a sector-shaped through hole 8 is machined on the pipeline and around the nozzle, and the sector-shaped through hole 8 surrounds 1 / 4 to 1 / 3 of the circumference of the nozzle.

[0015] Combined with Figure 3 A transverse artificial groove 2 is made in the circumferential direction of the outer wall of the nozzle seat area 6 of the nozzle, a longitudinal artificial groove 1 is made in the axial direction of the outer wall, a transverse artificial groove 2 is made in the circumferential direction of the inner wall, and a longitudinal artificial groove 1 is made in the axial direction of the inner wall, that is, a total of four artificial grooves in the nozzle seat area are made.

[0016] In the transition zone 7 of the nozzle, an artificial groove is made on each of the upper and lower inner walls at the R arc in the 0° (axis of the mother pipe) direction, and an artificial groove is made on each of the upper and lower outer walls at the R arc. The upper artificial groove on the inner wall corresponds to the upper artificial groove on the outer wall. Similarly, the lower artificial groove on the inner wall corresponds to the lower artificial groove on the outer wall, that is, a total of four artificial grooves 5 in the 0° direction. In the same way, in the transition zone 7 of the nozzle, an artificial groove is made on each of the upper and lower inner walls at the R arc in the 45° (oblique direction of the mother pipe) direction, and an artificial groove is made on each of the upper and lower outer walls at the R arc, that is, a total of four artificial grooves 4 in the 45° direction; in the transition zone 7 of the nozzle, an artificial groove is made on each of the upper and lower inner walls at the R arc in the 90° (circumferential direction of the mother pipe) direction, and an artificial groove is made on each of the upper and lower outer walls at the R arc, that is, a total of four artificial grooves 3 in the 90° direction. Only three directions are given in this embodiment. According to needs, multiple groups can also be made.

[0017] As Figure 4 shown in the transition zone 7, the oblique incidence wave probe ⑤ scans the four artificial grooves 5 in the 0° direction from the mother pipe side (0°), the oblique incidence wave probe ⑥ scans the four artificial grooves 3 in the 90° direction from the mother pipe side (90°), and the oblique incidence wave probe ⑧ scans the four artificial grooves 4 in the 45° direction from the mother pipe side (45°).

[0018] In the nozzle seat area 6, the oblique incidence wave probe ⑦ scans the two longitudinal artificial grooves 1 in the nozzle seat area in the circumferential positive and negative directions from the outer circular surface; the oblique incidence wave probe ④ scans the two transverse artificial grooves 2 in the nozzle seat area in the axial positive and negative directions from the inner circular surface. The direct incidence wave probe ① performs end face scanning, and the direct incidence wave probes ② and ③ are for auxiliary scanning.

[0019] All oblique incidence wave probes obtain sufficiently obvious signal feedback at the artificial grooves at the corresponding positions on the simulated specimen. The DAC curve or alarm gate is made according to the artificial grooves on the inner and outer walls to evaluate the defects of the inspected hot extrusion nozzle.

Claims

1. An ultrasonic testing simulation tooling for the hot extrusion nozzle of a nuclear power super pipeline, characterized in that: It includes a simulated sample, which is identical to the inspected nozzle in terms of size, process, and heat treatment. A fan-shaped through-hole is machined on the pipeline around the nozzle. On the inner wall at the R arc in the 0° direction of the transition zone of the nozzle, an artificial groove is made at the upper and lower parts respectively, and on the outer wall at the R arc, an artificial groove is made at the upper and lower parts respectively, with a total of four artificial grooves in the 0° direction. On the inner wall at the R arc in the 45° direction of the transition zone of the nozzle, an artificial groove is made at the upper and lower parts respectively, and on the outer wall at the R arc, an artificial groove is made at the upper and lower parts respectively, with a total of four artificial grooves in the 45° direction. On the inner wall at the R arc in the 90° direction of the transition zone of the nozzle, an artificial groove is made at the upper and lower parts respectively, and on the outer wall at the R arc, an artificial groove is made at the upper and lower parts respectively, with a total of four artificial grooves in the 90° direction.

2. The ultrasonic testing simulation tooling for the hot extrusion nozzle of the nuclear power super pipeline according to claim 1, characterized in that: On the outer wall in the circumferential direction of the nozzle seat area of the nozzle, a transverse artificial groove is made, and in the axial direction of the outer wall, a longitudinal artificial groove is made. On the inner wall in the circumferential direction, a transverse artificial groove is made, and in the axial direction of the inner wall, a longitudinal artificial groove is made.

3. The ultrasonic detection simulation tooling for the hot extrusion nozzle of the nuclear power super pipeline according to claim 1, wherein: The fan-shaped through-hole surrounds 1 / 4 to 1 / 3 of the circumference of the nozzle.

4. The ultrasonic detection simulation tooling for the hot extrusion nozzle of the nuclear power super pipeline according to claim 1, characterized in that: The upper artificial groove on the inner wall and the upper artificial groove on the outer wall in the transition zone of the nozzle are arranged in correspondence. Correspondingly, the lower artificial groove on the inner wall and the lower artificial groove on the outer wall are arranged in correspondence.

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