An elliptical inner cavity magnetic powder detection device

Abstract

The present disclosure relates to the technical field of nondestructive testing, and one embodiment of the present disclosure provides an elliptical inner cavity magnetic powder detection device, which comprises a blowout preventer, a first inner cavity is formed in the blowout preventer, and the device further comprises a fixing ring, a fixing rod, a plurality of support plates and a plurality of support fixing members; the bottom end of the fixing ring is threadedly connected to the top end of the blowout preventer; a reinforcing frame is fixedly connected to the fixing ring; one end of the fixing rod is fixedly connected to the bottom end of the reinforcing frame; the plurality of support plates are arranged in the first inner cavity through an adjusting mechanism; the adjusting mechanism is used for adjusting the distance between the support plates and the first inner cavity; and the support fixing members are arranged on the outer side walls of the support plates and used for fixing wires on the outer side walls of the support plates. Through the above technical solution, the technical problem that the inner cavity of the blowout preventer is difficult to be effectively circumferentially magnetized and transverse defects are difficult to be detected due to the structural limitation of the magnetic powder detection in the prior art is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of nondestructive testing technology, and more specifically, to an elliptical internal cavity magnetic particle testing device. Background Technology

[0002] Magnetic particle testing is an excellent method for detecting defects in workpieces using magnetic phenomena. It is widely used in the petrochemical industry, such as for magnetic particle testing of the inner cavity of blowout preventers. The typical testing process is as follows: first, select appropriate magnetic particle testing equipment based on the size, shape, and material of the blowout preventer cavity; then clean the surface of the blowout preventer cavity; then magnetize the inside of the cavity; then apply magnetic powder and observe; and finally perform post-testing processing. However, due to the complex internal structure of the blowout preventer cavity, some blowout preventers have an elliptical inner cavity with various corners, steps, holes, etc. These structures can cause the magnetic field to be distorted and scattered during propagation, resulting in uneven magnetic field distribution and making it difficult to effectively detect transverse defects.

[0003] In existing technologies, magnetization detection in a certain area is generally achieved by winding wires. The wires are evenly wound along the inner surface of the cavity and then fixed to the cavity surface with insulating tape or the like. This achieves circumferential magnetization of the blowout preventer cavity. However, this method is time-consuming and it is difficult to clearly display the entire cavity. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide an elliptical internal cavity magnetic particle detection device to solve the technical problem in the prior art that, due to the structural limitations of the magnetic particle detection inside the blowout preventer cavity, it is difficult to effectively magnetize the internal cavity circumferentially and detect transverse defects.

[0005] According to one aspect, at least one embodiment of this disclosure provides an elliptical internal cavity magnetic particle detection device, including a blowout preventer, wherein the blowout preventer has a first internal cavity, and further includes:

[0006] A fixing ring, the bottom end of which is connected to the top end of the blowout preventer by bolt thread, and a reinforcing frame is fixedly connected to the fixing ring, with an operating port between the reinforcing frame and the fixing ring;

[0007] A fixing rod, one end of which is fixedly connected to the bottom end of the reinforcing frame;

[0008] Multiple support plates are disposed within the first inner cavity via an adjustment mechanism, the adjustment mechanism being used to adjust the distance between the support plates and the first inner cavity;

[0009] Multiple support fasteners are provided on the outer side wall of the support plate for fixing the wires to the outer side wall of the support plate.

[0010] Preferably, the adjustment mechanism includes:

[0011] A fixing seat, which is sleeved on the lower part of the fixing rod;

[0012] A movable base, wherein the movable base is mounted on the lower side of the fixed rod via a driving component;

[0013] Four first hinge seats are arranged circumferentially on the outer side wall of the fixed seat, and a first rotating groove is formed on the first hinge seat;

[0014] The first rotating plate has one end hinged to the first hinge seat and the other end hinged to the support plate.

[0015] Four second hinge seats are arranged circumferentially on the outer side wall of the movable seat, and a second rotating groove is provided on the second hinge seat;

[0016] The second rotating plate has one end hinged to the second hinge seat and the other end hinged to the support plate.

[0017] Furthermore, the driving element includes:

[0018] A first motor is mounted on the reinforcing frame;

[0019] A threaded rod, one end of which passes through the fixed rod and the reinforcing frame and is coaxially connected to the output end of the first motor, is rotatably connected to the fixed rod and the reinforcing frame, and the other end of which is threadedly connected to the bottom end of the movable seat. The output end of the first motor rotates to drive the threaded rod to move, thereby adjusting the distance between the movable seat and the fixed seat.

[0020] Preferably, the support and fixing member includes:

[0021] A support base, one end of which is fixedly connected to one end of the support plate, and a placement groove is provided inside the support base;

[0022] An elastic fastener is provided on the support base and is used to open and close the top of the placement slot and fix the wire.

[0023] Furthermore, the elastic fastener includes:

[0024] A spring is provided on the support base, and one end of the spring is fixedly connected to the inner bottom wall of the cavity.

[0025] A retaining seat, one end of which is fixedly connected to the other end of the spring;

[0026] A connecting rod is disposed in the middle of the spring, one end of the connecting rod is fixedly connected to one end of the abutment, and the other end of the connecting rod passes through the support seat;

[0027] A limiting plate, one end of which is fixedly connected to the other end of the connecting rod and fits against the other end of the support base.

[0028] Preferably, in order to improve work efficiency and facilitate circumferential magnetization of the first inner cavity, clamps are provided at both ends of the wire.

[0029] Preferably, the first rotating plate and the second rotating plate are arranged crosswise, and the middle parts of the first rotating plate and the second rotating plate are connected by a rotating shaft. The first rotating groove is provided at one end of the first hinge seat, and the second rotating groove is provided at the other end of the second hinge seat. When the movable seat moves upward, it drives one end of the second rotating plate to move upward, and the other end of the second rotating plate pushes the support plate to move, which in turn drives the other end of the first rotating plate to move upward.

[0030] To facilitate the movement of the support plate, a sliding groove is provided on the first rotating plate. The inner wall of the sliding groove is in contact with the second rotating plate and generates frictional resistance during the movement.

[0031] In order to adjust the distance between the outer wall of the support plate and the first inner cavity, a movable groove is provided on the support plate, and the other end of the first rotating plate is hinged to the inner wall of the movable groove and slides in cooperation with the inner wall of the movable groove.

[0032] In order to place the wire evenly in the first inner cavity and to facilitate the adjustment of the winding range of the wire, the bottom end of the placement groove is provided with a groove that matches the wire, and the groove is inclined.

[0033] The beneficial effects of the embodiments disclosed herein are as follows:

[0034] In this disclosure, clamps are connected to both ends of the wire, and the wire is placed on multiple support plates by multiple support fixing components. An adjustment mechanism is provided, and the first motor is started to drive the first rotating plate and the second rotating plate to move crosswise to push the support plates to move. The support plates move the wire closer to or away from the inner wall of the first inner cavity. In this way, the winding size of the wire can be adjusted according to the size of different blowout preventer cavities. The fixing ring is connected to the top of the blowout preventer by bolt threads to maintain the stability of the entire device. Finally, a magnetic particle detector is connected to the clamps at both ends for magnetization, which improves the working efficiency. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present disclosure;

[0037] Figure 2 This is a partial structural cross-sectional view of the whole in one embodiment of this disclosure;

[0038] Figure 3 This is a schematic diagram of the structure of the fixed ring, fixed rod, support plate, adjustment mechanism and support fixing member in one embodiment of the present disclosure;

[0039] Figure 4 This is a schematic diagram of the structure of the fixed rod, support plate, adjustment mechanism and support fixing member in one embodiment of the present disclosure;

[0040] Figure 5 This is a partial structural cross-sectional view from another perspective of the cooperation between the fixing rod, support plate, adjustment mechanism and support fastener in one embodiment of this disclosure;

[0041] Figure 6 This is a partial structural cross-sectional view of the support fastener in one embodiment of this disclosure;

[0042] Figure 7 This is a schematic diagram of the structure of the first rotating plate, the second rotating plate, and the rotating shaft in one embodiment of the present disclosure.

[0043] In the diagram: 1. Blowout preventer; 2. First inner cavity; 3. Fixing ring; 4. Reinforcing frame; 5. Fixing rod; 6. Support plate; 7. Fixing seat; 8. Moving seat; 9. First hinge seat; 10. First rotating groove; 11. First rotating plate; 12. Second hinge seat; 13. Second rotating groove; 14. Second rotating plate; 15. First motor; 16. Threaded rod; 17. Support seat; 18. Placement groove; 19. Spring; 20. Clamping seat; 21. Connecting rod; 22. Limiting plate; 23. Clamp; 24. Slide groove; 25. Moving groove; 26. Wire groove; 27. Rotating shaft; 28. Wire. Detailed Implementation

[0044] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0045] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0046] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0047] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0049] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0050] like Figures 1-7 As shown, it illustrates an elliptical inner cavity magnetic particle detection device according to an embodiment of the present disclosure, including a blowout preventer 1, a first inner cavity 2 opened in the blowout preventer 1, and also including a fixing ring 3, a fixing rod 5, a plurality of support plates 6 and a plurality of support fixing members;

[0051] like Figure 2As shown, the bottom end of the fixing ring 3 is connected to the top end of the blowout preventer 1 by bolt thread, and a reinforcing frame 4 is fixedly connected to the fixing ring 3. One end of the fixing rod 5 is fixedly connected to the bottom end of the reinforcing frame 4.

[0052] like Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, multiple support plates 6 are set in the first inner cavity 2 by an adjustment mechanism. The adjustment mechanism is used to adjust the distance between the support plates 6 and the first inner cavity 2. The adjustment mechanism includes a fixed seat 7, a movable seat 8, four first hinge seats 9, a first rotating plate 11, four second hinge seats 12, and a second rotating plate 14. The fixed seat 7 is sleeved on the lower part of the fixed rod 5. The movable seat 8 is set on the lower side of the fixed rod 5 by a driving component. The first hinge seats 9 are circumferentially set on the outer wall of the fixed seat 7. The first hinge seats 9 have a first rotating groove 10. One end of the first rotating plate 11 is hinged to the first hinge seat 9 and keeps the height constant. The other end of the first rotating plate 11 is hinged to the support plate 6. In order to adjust the distance between the support plates 6 and the support plate 6, the adjustment mechanism is used to adjust the distance between the support plates 6 and the support plate 6. The distance between the side wall and the first inner cavity 2 is such that a movable groove 25 is provided on the support plate 6. The other end of the first rotating plate 11 is hinged to the inner side wall of the movable groove 25 and slides in cooperation with the inner side wall of the movable groove 25. When the driving component drives the movable seat 8 to move, one end of the first rotating plate 11 maintains a constant height and rotates within the first hinge seat 9, while the other end of the first rotating plate 11 not only rotates within the support plate 6 but also moves up and down to cooperate with the movement of the support plate 6. The second hinge seat 12 is circumferentially arranged on the outer side wall of the movable seat 8. A second rotating groove 13 is provided on the second hinge seat 12. One end of the second rotating plate 14 is hinged to the second hinge seat 12. The first rotating groove 10 and the second rotating groove 13 are connected. The inner walls of both rotating plates are provided with anti-slip layers, so that when the other ends of the first rotating plate 11 and the second rotating plate 14 support the support plate 6, the outer side wall of the support plate 6 remains parallel to the inner side wall of the first inner cavity 2. The other end of the second rotating plate 14 is hinged to the support plate 6. The first rotating plate 11 and the second rotating plate 14 are arranged crosswise, and the middle parts of the first rotating plate 11 and the second rotating plate 14 are connected by a rotating shaft 27. The first rotating groove 10 is provided at one end of the first hinge seat 9, and the second rotating groove 13 is provided at the other end of the second hinge seat 12. When the moving seat 8 moves upward, it drives one end of the second rotating plate 14 to move upward, and the other end of the second rotating plate 14 pushes the support plate 6 to move, and drives the other end of the first rotating plate 11 to move upward. To facilitate the upward movement of the support plate 6, a sliding groove 24 is provided on the first rotating plate 11. The inner wall of the sliding groove 24 is in contact with the second rotating plate 14 and generates frictional resistance during the movement. The driving components include a first motor 15 and a threaded rod 16. The first motor 15 is mounted on the reinforcing frame 4. One end of the threaded rod 16 passes through the fixed rod 5 and the reinforcing frame 4 and is coaxially connected to the output end of the first motor 15. The threaded rod 16 is rotatably connected to the fixed rod 5 and the reinforcing frame 4. The other end of the threaded rod 16 is threadedly connected to the bottom end of the moving seat 8. By starting the first motor 15, the output end of the first motor 15 drives the threaded rod 16 to rotate. The rotation of the threaded rod 16 drives the moving seat 8 to move upward or downward.

[0053] The support and fixing parts are set on the outer side wall of the support plate 6 to fix the wire 28 on the outer side wall of the support plate 6. In order to improve working efficiency and facilitate circumferential magnetization of the first inner cavity 2, clamps 23 are provided at both ends of the wire 28.

[0054] like Figure 4 and Figure 6 As shown, the support and fixing component includes a support base 17 and an elastic fixing component. One end of the support base 17 is fixedly connected to one end of the support plate 6. A placement groove 18 is provided inside the support base 17. In order to evenly place the wire 28 in the first inner cavity 2 and to facilitate the adjustment of the winding range of the wire 28, a wire groove 26 that matches the wire 28 is provided at the bottom end of the placement groove 18. The wire groove 26 is inclined. The elastic fixing component is provided on the support base 17 and is used to open and close the top end of the placement groove 18 and fix the wire 28. The elastic fixing component includes a spring 19, a retaining seat 20, a connecting rod 21, and a limiting plate 22. A cavity is provided on the support base 17. One end of the spring 19 is fixedly connected to the inner bottom wall of the cavity. One end of the retaining seat 20 is fixedly connected to the other end of the spring 19. The other end of the cavity is arc-shaped, and the cross-sectional area of ​​the cavity is equal to the cross-sectional area of ​​the clamping seat 20. The connecting rod 21 is located in the middle of the spring 19, and the spring 19 "encloses" the connecting rod 21. One end of the connecting rod 21 is fixedly connected to one end of the clamping seat 20, and the other end of the connecting rod 21 passes through the support seat 17. One end of the limiting plate 22 is fixedly connected to the other end of the connecting rod 21 and fits against the other end of the support seat 17. When the wire 28 is held and squeezed, the other end of the clamping seat 20 is squeezed. The clamping seat 20 squeezes the spring 19 and the connecting rod 21. The spring 19 contracts and drives the clamping seat 20 to move into the cavity, thus placing the wire 28 on the wire groove 26. Then the spring 19 pushes the clamping seat 20 back to its original position and "seals" the opening of the placement groove 18 to prevent the wire 28 from falling off.

[0055] Working principle: When performing transverse magnetic particle testing on the top of the blowout preventer 1's inner cavity, the blowout preventer 1 needs to be circumferentially magnetized. First, the wire 28 is snapped into multiple support fixtures. By holding the wire 28 and pressing it against the clamping seat 20, the spring 19 contracts, causing the clamping seat 20 to move into the cavity. The wire 28 will then be smoothly placed on the wire groove 26. Subsequently, the spring 19 pushes the clamping seat 20 back into position and "seals" the opening of the placement groove 18, preventing the wire 28 from falling off. First, adjust the distance between the wire 28 and the inner wall of the first inner cavity 2 according to the size of the first inner cavity 2. If the distance is too far, start the first motor 15. The output end of the first motor 15 drives the threaded rod 16 to rotate. The rotation of the threaded rod 16 drives the moving seat 8 to move upward, driving the second rotating plate 14... The first end moves upward, and the other end of the second rotating plate 14 pushes the support plate 6 closer to the inner wall of the first inner cavity 2. The height of one end of the first rotating plate 11 remains unchanged, and the other end of the first rotating plate 11 moves upward in the slide groove 24 to cooperate with the movement of the support plate 6. During the movement of the support plate 6, the wire 28 will slide in the wire groove 26 to adjust the winding range of the wire 28. After adjusting the distance between the wire 28 and the first inner cavity 2, considering that the first inner cavity 2 of the blowout preventer 1 is elliptical and close to circular, and since the wire 28 has good extensibility, the device is placed in the first inner cavity 2 of the blowout preventer 1, and the bottom end of the fixing ring 3 is connected to the top end of the blowout preventer 1 by bolt thread to maintain the stability of the device. Finally, the inner wall of the first inner cavity 2 is circumferentially magnetized.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. An elliptical internal cavity magnetic particle detection device, comprising a blowout preventer (1), wherein the blowout preventer (1) has a first internal cavity (2), characterized in that, Also includes: A fixing ring (3) is provided, the bottom end of which is connected to the top end of the blowout preventer (1) by bolt thread, and a reinforcing frame (4) is fixedly connected to the fixing ring (3). A fixing rod (5) is fixedly connected at one end to the bottom end of the reinforcing frame (4); Multiple support plates (6) are arranged in the first inner cavity (2) by means of an adjustment mechanism, the adjustment mechanism being used to adjust the distance between the support plates (6) and the first inner cavity (2); Multiple support fasteners are provided on the outer side wall of the support plate (6) for fixing the wire (28) on the outer side wall of the support plate (6).

2. The elliptical internal cavity magnetic particle detection device according to claim 1, characterized in that, The adjustment mechanism includes: A fixing seat (7) is sleeved on the lower part of the fixing rod (5); A movable seat (8) is provided on the lower side of the fixed rod (5) via a driving component; Four first hinge seats (9) are arranged circumferentially on the outer side wall of the fixed seat (7), and a first rotating groove (10) is provided on the first hinge seat (9). The first rotating plate (11) has one end hinged to the first hinge seat (9) and the other end hinged to the support plate (6); Four second hinge seats (12) are arranged circumferentially on the outer side wall of the movable seat (8), and a second rotating groove (13) is provided on the second hinge seat (12). The second rotating plate (14) has one end hinged to the second hinge seat (12) and the other end hinged to the support plate (6).

3. The elliptical internal cavity magnetic particle detection device according to claim 2, characterized in that, The driving component includes: The first motor (15) is mounted on the reinforcing frame (4); A threaded rod (16) has one end passing through the fixed rod (5) and the reinforcing frame (4) and coaxially connected to the output end of the first motor (15). The threaded rod (16) is rotatably connected to the fixed rod (5) and the reinforcing frame (4). The other end of the threaded rod (16) is threadedly connected to the bottom end of the movable seat (8).

4. The elliptical internal cavity magnetic particle detection device according to claim 3, characterized in that, The supporting fastener includes: Support base (17), one end of the support base (17) is fixedly connected to one end of the support plate (6), and a placement groove (18) is provided in the support base (17). An elastic fastener is provided on the support base (17) for opening and closing the top of the placement slot (18) and fixing the wire (28).

5. The elliptical internal cavity magnetic particle detection device according to claim 4, characterized in that, The elastic fastener includes: Spring (19), the support base (17) has a cavity, and one end of the spring (19) is fixedly connected to the inner bottom wall of the cavity; A retaining seat (20), one end of which is fixedly connected to the other end of the spring (19); A connecting rod (21) is provided in the middle of the spring (19). One end of the connecting rod (21) is fixedly connected to one end of the abutment (20), and the other end of the connecting rod (21) passes through the support seat (17). Limiting plate (22), one end of which is fixedly connected to the other end of the connecting rod (21) and fits against the other end of the support base (17).

6. The elliptical internal cavity magnetic particle detection device according to claim 5, characterized in that, The conductor (28) is provided with clamps (23) at both ends.

7. The elliptical internal cavity magnetic particle detection device according to claim 6, characterized in that, The first rotating plate (11) and the second rotating plate (14) are arranged crosswise. The middle parts of the first rotating plate (11) and the second rotating plate (14) are connected by a rotating shaft (27). The first rotating groove (10) is located at one end of the first hinge seat (9), and the second rotating groove (13) is located at the other end of the second hinge seat (12).

8. The elliptical internal cavity magnetic particle detection device according to claim 7, characterized in that, The first rotating plate (11) has a groove (24) and the inner wall of the groove (24) is in contact with the second rotating plate (14).

9. The elliptical internal cavity magnetic particle detection device according to claim 8, characterized in that, The support plate (6) has a movable groove (25), and the other end of the first rotating plate (11) is hinged to the inner wall of the movable groove (25) and slides in cooperation with the inner wall of the movable groove (25).

10. The elliptical internal cavity magnetic particle detection device according to claim 9, characterized in that, The bottom end of the placement groove (18) is provided with a wire groove (26) that matches the wire (28), and the wire groove (26) is inclined.

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