Auxiliary tool for ultrasonic flaw detection of nuclear-grade stainless steel outer sleeve

Abstract

An ultrasonic flaw detection auxiliary tool for a nuclear-grade stainless steel outer sleeve comprises a base arranged at the bottom, rotating assemblies arranged at the two ends of the top of the base and the nuclear-grade stainless steel outer sleeve arranged on the rotating assemblies, and further comprises a moving assembly and an ultrasonic flaw detector. An ultrasonic flaw detector is mounted at the top end of the moving assembly; the moving assembly comprises a shell, moving blocks, a screw hole and guide holes, the shell is installed in the middle of the top end of the base, an inner cavity is formed in the shell, a screw rod is installed in the middle, located in the inner cavity, of the shell, a first driving motor is installed at one end of the screw rod, guide columns are symmetrically arranged on the two sides of the screw rod, and the moving blocks are arranged on the screw rod and the guide columns; the nuclear-grade stainless steel outer sleeve flaw detection device is novel in structure and ingenious in conception, flaw detection operation on different positions of the nuclear-grade stainless steel outer sleeve in the circumferential direction and the transverse direction is facilitated, operation is easy and convenient, and use is facilitated.

Description

Technical Field

[0001] The utility model relates to an auxiliary tooling, in particular to an auxiliary tooling for ultrasonic flaw detection of nuclear-grade stainless steel outer sleeves. Background Technique

[0002] Seamless steel pipes are common metallurgical and steel products. From metal smelting, steel rolling to finished product leaving the factory, several processes are required. In order to ensure that the processing quality of seamless steel pipes meets the corresponding technical requirements, non-destructive flaw detection inspection is required after the corresponding deformation processing processes.

[0003] Ultrasonic flaw detection has the characteristics of good directivity, short wavelength, small loss in high-density solids, and large reflection at the interface of different density media. It has a high detection rate for area-type defects and can meet the flaw detection requirements for defects such as internal structure cracks, lap joints, inclusions, corrosion pits, and improperly processed plastic compression layers. The inspection cost is low, the speed is fast, the inspection instrument is small in volume and light in weight, and it is convenient to use on-site. Therefore, it is called the main non-destructive flaw detection method in the current quality inspection process of seamless steel pipes.

[0004] The seamless steel pipe of 0Cr17Ni12Mo2Ti has the brand number 316Ti and is used for the stainless steel outer sleeves of nuclear-related facility components. The finished product is a hexagonal seamless steel pipe, which is processed into a φ68.3*1.3mm circular seamless steel pipe first and then processed into a hexagonal shape. Therefore, only by ensuring that the processing quality of the φ68.3*1.3mm circular seamless steel pipe meets the technical requirements can high-quality pipe blanks be provided for the production of hexagonal seamless steel pipes. Due to the special use of this type of seamless steel pipe, the quality requirements for pipe processing are extremely strict. Therefore, ultrasonic flaw detection is used as the main method for non-destructive detection of the process quality and is also the key process to ensure its processing quality.

[0005] When the existing auxiliary tooling for ultrasonic flaw detection of nuclear-grade stainless steel outer sleeves is in use, it is unable to perform flaw detection on the circumferential and transverse directions of the nuclear-grade stainless steel outer sleeves well. For some rotatable or laterally adjustable mechanisms, the adjustment is complex and the use cost is high, which is not conducive to use. Content of the Utility Model

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an auxiliary tooling for ultrasonic flaw detection of nuclear-grade stainless steel outer sleeves, effectively solving the problem that when the existing auxiliary tooling for ultrasonic flaw detection of nuclear-grade stainless steel outer sleeves is in use, it is unable to perform flaw detection on the circumferential and transverse directions of the nuclear-grade stainless steel outer sleeves well, or for some rotatable or laterally adjustable mechanisms, the adjustment is complex and the use cost is high, which is not conducive to use.

[0007] To achieve the above object, the utility model provides the following technical solutions: The utility model includes a base provided at the bottom, rotating components provided at both ends of the top of the base, and a nuclear-grade stainless steel outer sleeve tube provided on the rotating components. It also includes a moving component and an ultrasonic flaw detector. A moving component is provided in the middle of the top end of the base, and an ultrasonic flaw detector is installed at the top end of the moving component;

[0008] The moving component includes a housing, an inner cavity, a lead screw, a first driving motor, a guiding column, a moving block, a threaded hole, and a guiding hole. The housing is installed in the middle of the top end of the base. An inner cavity is provided inside the housing. A lead screw is installed in the middle of the housing within the inner cavity. One end of the lead screw is installed with a first driving motor. Guiding columns are symmetrically arranged on both sides of the lead screw. A moving block is provided on the lead screw and the guiding columns. A threaded hole is provided at the position of the moving block corresponding to the lead screw.

[0009] Preferably, a guiding hole is provided at the position of the moving block corresponding to the guiding column.

[0010] Preferably, the ultrasonic flaw detector is installed on the moving block.

[0011] Preferably, the rotating component includes a bearing platform, a rotating roller, a rotating shaft, and a second driving motor. The bearing platforms are symmetrically fixed at the top end of the base. A number of rotating rollers are embedded inside the bearing platforms. A rotating shaft is provided in the middle of the rotating roller. One end of the rotating shaft of the rotating roller in the middle of the bearing platform is installed with a second driving motor.

[0012] Preferably, a hard rubber layer is provided on the surface of the rotating roller.

[0013] Preferably, the number of the rotating rollers is five.

[0014] Beneficial effects: When the utility model is in use, the ultrasonic flaw detector is installed to perform flaw detection on the nuclear-grade stainless steel outer sleeve tube. During flaw detection, the second driving motor works. The second driving motor drives the rotating roller to rotate. The rotating roller drives the nuclear-grade stainless steel outer sleeve tube on it to rotate, so as to facilitate flaw detection of different positions of the nuclear-grade stainless steel outer sleeve tube. When it is necessary to perform flaw detection on different horizontal positions of the nuclear-grade stainless steel outer sleeve tube, the first driving motor works. The first driving motor drives the lead screw to rotate. With the cooperation of the rotation of the lead screw and the threaded hole provided on the moving block, the moving block moves on the lead screw. The moving block drives the ultrasonic flaw detector to move, and thus flaw detection of different positions of the nuclear-grade stainless steel outer sleeve tube can be completed. It has strong applicability. The structure of the utility model is novel and ingeniously conceived, facilitating circumferential and horizontal flaw detection operations on different positions of the nuclear-grade stainless steel outer sleeve tube. The operation is simple and convenient, which is beneficial for use. Description of the Drawings

[0015] The accompanying drawings are used to provide a further understanding of the present utility model and form a part of the description. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the accompanying drawings:

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a sectional view of the bearing platform of the present utility model;

[0018] Figure 3 is a schematic diagram of the housing structure of the present utility model;

[0019] Reference numerals in the figures: 1, base; 2, rotating assembly; 3, nuclear-grade stainless steel outer sleeve; 4, moving assembly; 5, ultrasonic flaw detector; 6, housing; 7, inner cavity; 8, lead screw; 9, first driving motor; 10, guide post; 11, moving block; 12, threaded hole; 13, guide hole; 14, bearing platform; 15, rotating roller; 16, rotating shaft; 17, second driving motor. Detailed Description of the Embodiments

[0020] The following further describes in detail the specific embodiments of the present utility model in conjunction with the attached Figures 1-3 drawings.

[0021] Embodiment 1, given by Figures 1-3 The present utility model provides an ultrasonic flaw detection auxiliary tooling for a nuclear-grade stainless steel outer sleeve, including a base 1 provided at the bottom, rotating assemblies 2 provided at both ends of the top of the base 1, and a nuclear-grade stainless steel outer sleeve 3 provided on the rotating assemblies 2. It further includes a moving assembly 4 and an ultrasonic flaw detector 5. A moving assembly 4 is provided in the middle of the top end of the base 1, and an ultrasonic flaw detector 5 is installed at the top end of the moving assembly 4;

[0022] The moving assembly 4 includes a housing 6, an inner cavity 7, a lead screw 8, a first driving motor 9, a guide post 10, a moving block 11, a threaded hole 12, and a guide hole 13. The housing 6 is installed in the middle of the top end of the base 1. An inner cavity 7 is provided inside the housing 6. A lead screw 8 is installed in the middle of the housing 6 in the inner cavity 7. A first driving motor 9 is installed at one end of the lead screw 8. Guide posts 10 are symmetrically provided on both sides of the lead screw 8. A moving block 11 is provided on the lead screw 8 and the guide posts 10. A threaded hole 12 is provided at the position of the moving block 11 corresponding to the lead screw 8.

[0023] During specific use: When this utility model is in use, the ultrasonic flaw detector 5 installed is used to perform flaw detection on the nuclear-grade stainless steel outer sleeve 3. During flaw detection, the second driving motor 17 operates. The operation of the second driving motor 17 drives the rotating roller 15 to rotate, and the rotation of the rotating roller 15 drives the nuclear-grade stainless steel outer sleeve 3 thereon to rotate, thereby facilitating flaw detection of different positions of the nuclear-grade stainless steel outer sleeve 3. When it is necessary to perform flaw detection at different horizontal positions of the nuclear-grade stainless steel outer sleeve 3, the first driving motor 9 operates. The operation of the first driving motor 9 drives the lead screw 8 to rotate. With the cooperation of the rotation of the lead screw 8 and the threaded hole 12 opened on the moving block 11, the moving block 11 moves on the lead screw 8. The movement of the moving block 11 drives the ultrasonic flaw detector 5 to move, and thus flaw detection at different positions of the nuclear-grade stainless steel outer sleeve 3 can be completed, with strong applicability.

[0024] Beneficial effects: This utility model has a novel structure and ingenious concept, facilitating flaw detection operations at different circumferential and horizontal positions of the nuclear-grade stainless steel outer sleeve 3. The operation is simple and convenient, which is beneficial for use.

[0025] Embodiment 2

[0026] In Embodiment 1, the movement stability of the moving block 11 is insufficient. Referring to Figure 1 , as another preferred embodiment, the difference from Embodiment 1 is that a guide hole 13 is opened at the position of the moving block 11 corresponding to the guide post 10, improving the movement stability of the moving block 11.

[0027] Embodiment 3

[0028] In Embodiment 1, the ultrasonic flaw detector 5 is inconvenient to use. Referring to Figure 1 , as another preferred embodiment, the difference from Embodiment 1 is that the ultrasonic flaw detector 5 is installed on the moving block 11, facilitating the installation and use of the ultrasonic flaw detector 5.

[0029] Embodiment 4

[0030] In Embodiment 1, the rotation of the nuclear-grade stainless steel outer sleeve 3 is inconvenient. Referring to Figure 1 , as another preferred embodiment, the difference from Embodiment 1 is that the rotating assembly 2 includes a bearing platform 14, a rotating roller 15, a rotating shaft 16, and a second driving motor 17. The bearing platforms 14 are symmetrically fixed at the top of the base 1. A plurality of rotating rollers 15 are embedded in the bearing platforms 14. A rotating shaft 16 is arranged in the middle of the rotating roller 15. One end of the rotating shaft 16 of the rotating roller 15 in the middle of the bearing platform 14 is provided with a second driving motor 17. During use, the second driving motor 17 operates. The operation of the second driving motor 17 drives the rotating roller 15 to rotate, and the rotation of the rotating roller 15 drives the nuclear-grade stainless steel outer sleeve 3 thereon to rotate, thereby facilitating flaw detection of different positions of the nuclear-grade stainless steel outer sleeve 3.

[0031] Embodiment 5

[0032] In the fourth embodiment, the rotating roller 15 is inconvenient to use. Refer to Figure 1 , as another preferred embodiment, which is different from the fourth embodiment in that a hard rubber layer is provided on the surface of the rotating roller 15, so that the rotating roller 15 can be protected to a certain extent when rotating.

[0033] Embodiment Six

[0034] In the fourth embodiment, the rotating roller 15 is inconvenient to use. Refer to Figure 1 , as another preferred embodiment, which is different from the fourth embodiment in that the number of the rotating rollers 15 is five, which is convenient for the use of the rotating rollers 15.

[0035] Those skilled in the art connect all the electrical components in this case to their adapted power supplies through wires, and should select appropriate controllers and encoders according to the actual situation to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of the electrical components working successively in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of the electrical control will be made.

[0036] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ultrasonic flaw detection auxiliary tooling for a nuclear-grade stainless steel outer sleeve, comprising a base (1) arranged at the bottom, two ends of the top of the base (1) are respectively provided with rotating components (2), and a nuclear-grade stainless steel outer sleeve (3) arranged on the rotating components (2), characterized in that: It further includes a moving component (4) and an ultrasonic flaw detector (5). A moving component (4) is arranged in the middle of the top end of the base (1), and an ultrasonic flaw detector (5) is installed at the top end of the moving component (4). The moving component (4) includes a housing (6), an inner cavity (7), a lead screw (8), a first driving motor (9), a guide post (10), a moving block (11), a threaded hole (12) and a guide hole (13). The housing (6) is installed in the middle of the top end of the base (1). An inner cavity (7) is arranged inside the housing (6). A lead screw (8) is installed in the middle of the housing (6) at the inner cavity (7). One end of the lead screw (8) is installed with a first driving motor (9). Guide posts (10) are symmetrically arranged on both sides of the lead screw (8). A moving block (11) is arranged on the lead screw (8) and the guide posts (10). A threaded hole (12) is formed at the position of the moving block (11) corresponding to the lead screw (8).

2. The ultrasonic flaw detection auxiliary tooling for the nuclear-grade stainless steel outer sleeve pipe according to claim 1, characterized in that: A guide hole (13) is formed at the position of the moving block (11) corresponding to the guide post (10).

3. An ultrasonic flaw detection auxiliary tooling for nuclear-grade stainless steel outer sleeves according to claim 1, characterized in that: The ultrasonic flaw detector (5) is installed on the moving block (11).

4. An ultrasonic flaw detection auxiliary tooling for nuclear-grade stainless steel outer sleeves according to claim 1, characterized in that: The rotating component (2) includes a bearing platform (14), a rotating roller (15), a rotating shaft (16) and a second driving motor (17). The bearing platforms (14) are symmetrically fixed at the top end of the base (1). A plurality of rotating rollers (15) are embedded inside the bearing platforms (14). A rotating shaft (16) is arranged in the middle of the rotating roller (15). One end of the rotating shaft (16) of the rotating roller (15) in the middle of the bearing platform (14) is installed with a second driving motor (17).

5. The ultrasonic flaw detection auxiliary tooling for nuclear-grade stainless steel outer sleeves according to claim 4, characterized in that: A hard rubber layer is arranged on the surface of the rotating roller (15).

6. The ultrasonic flaw detection auxiliary tooling for nuclear-grade stainless steel outer sleeves according to claim 4, characterized in that: The number of the rotating rollers (15) is five.

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