A high-precision submarine pipeline detection device

Abstract

The utility model discloses a kind of high-precision submarine pipeline detection devices, including multi-beam echo sounder, the multi-beam echo sounder is connected with transducer, the transducer top is connected with connecting rod, the connecting rod top is connected with electric push rod, the output end of the electric push rod is detachably connected with connecting rod top end;The electric push rod top end is connected with support rod, the support rod away from the one end of electric push rod is equipped with support seat, and the support seat is used for being fixed on the hull of surveying ship.The utility model connects transducer to submarine pipeline by multi-beam echo sounder and detects, simultaneously, transducer is hung up using support bracket, electric push rod and connecting rod, so that transducer can be smoothly inserted into seawater by electric push rod, and the depth of transducer inserted into seawater can be flexibly adjusted according to detection requirement, and support bracket can stably support transducer after being fixed on the hull.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, specifically a high-precision submarine pipeline detection device. Background Technology

[0002] Submarine pipelines serve as core infrastructure for the transportation of marine oil and gas resources, submarine communications, and marine energy transmission. As marine development activities expand into deeper and more open seas, the mileage of submarine pipelines continues to increase, and the detection environment becomes increasingly complex, significantly raising the requirements for detection accuracy and reliability. Therefore, some new types of detection devices have emerged on the market.

[0003] For example, the utility model patent with publication number CN222189471U discloses a seabed sonar detection device, which includes two hemispherical shells connected by bolts. One of the hemispherical shells has a base fixed to its bottom end, and a sonar detection component is installed on the base. The top ends of the two hemispherical shells are fixed with cover plates, and a connecting component is fixed to the top end of the cover plates. Each hemispherical shell has an inner cavity, and the two hemispherical shells have communicating side cavities on their sides. A liquid guide tube extending to the outside of the hemispherical shell is fixed to the bottom end of the side cavity.

[0004] The aforementioned detection device uses sonar detection components for seabed detection. In practice, the detection of seabed pipelines often employs side-scan sonar or multibeam echo sounders. Both side-scan sonar and multibeam echo sounders require the test end to be immersed in water. Existing detection devices suitable for seabed pipelines cannot be stably inserted into seawater and move with the ship's hull. Furthermore, it is inconvenient to adjust the depth of the detection end inserted into the seawater, hindering personnel from quickly adjusting them according to usage requirements. Utility Model Content

[0005] The purpose of this invention is to provide a high-precision submarine pipeline detection device, which aims to improve the existing submarine pipeline detection devices that cannot be inserted into the seawater to move stably with the ship, and also make it inconvenient to adjust the depth of the detection tip inserted into the seawater.

[0006] This utility model is implemented as follows: A high-precision subsea pipeline detection device includes a multibeam echo sounder connected to a transducer. A connecting rod is connected to the top of the transducer, and an electric push rod is connected to the top of the connecting rod. The output end of the electric push rod is detachably connected to the top of the connecting rod. A support rod is connected to the top of the electric push rod, and a support seat is provided at the end of the support rod away from the electric push rod. The support seat is used to fix the device to the hull of a survey vessel.

[0007] Preferably, the multibeam echo detector has a handle at the center of its front end, and a cover is hinged to the rear end of the upper surface of the multibeam echo detector. The cover has two buckles, which engage with the front end of the multibeam echo detector when the cover is closed.

[0008] Preferably, the multibeam echo detector has a display screen on its upper surface, and a control panel is provided along one side of the display screen on the upper surface of the multibeam echo detector. A male connector is provided on one side of the multibeam echo detector, and a support foot is provided at the corner of the bottom surface of the multibeam echo detector.

[0009] Preferably, the transducer has a connecting post at the top center, which is threaded to the bottom end of the connecting rod; the connecting post has a connecting line at the middle, and the connecting line has a connecting female end, which is connected to the connecting male end.

[0010] Preferably, the support base has a fixing plate at the bottom, the fixing plate has multiple fixing holes at its edge, the support base has a post at the top, the post has a first stud at its top, and a first pressure cap is threaded onto the first stud.

[0011] Preferably, the support rod has a first through hole at one end where the electric push rod is installed, and a guide rod is provided vertically downward near the first through hole on the support rod; the other end of the support rod has a sleeve with a sleeve hole in the middle, the sleeve hole is fitted onto the insert post, and the first pressure cap is pressed against the top of the sleeve; a diagonal brace is provided between the bottom of the support rod and the bottom of the sleeve.

[0012] Preferably, the electric push rod has a second stud at its top end, and a second pressure cap at one end of the second stud that passes through the first through hole, the second pressure cap pressing against the upper surface of the support rod; the output end of the electric push rod has a telescopic rod, the bottom end of the telescopic rod has a limiting ring, the middle of the limiting ring has a threaded joint, and the threaded joint has a third pressure cap.

[0013] Preferably, the connecting rod has a sealing joint at the top, a second through hole in the middle of the sealing joint, a wire hole at the top of the side of the connecting rod, and a connecting hole at the top of the connecting rod for connecting to the output end of the electric push rod; a sleeve plate is provided on the side of the connecting rod near the top, and a guide hole is provided in the middle of the sleeve plate.

[0014] Preferably, it also includes a sonar dome, which is fitted onto the transducer. The bottom end of the connecting rod is provided with a pressure cap, and the edge of the pressure cap is provided with multiple bolt holes. The sonar dome and the pressure cap are connected by bolts.

[0015] Preferably, the sonar dome has a connecting ring at the top opening, the connecting ring has multiple mounting holes on its edge, and the upper surface edge of the connecting ring has a sealing gasket.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a multibeam echo sounder connected to a transducer to detect submarine pipelines. At the same time, the transducer is suspended by a support rod, an electric push rod, and a connecting rod. In this way, the electric push rod drives the transducer to be smoothly inserted into the seawater. The depth of the transducer inserted into the seawater can be flexibly adjusted according to the detection requirements. After the support bracket is fixed to the hull, it can stably support and adjust the transducer, which facilitates the stable and flexible use of the entire detection device.

[0017] 2. This utility model protects the transducer by setting a sonar cover, which can prevent the transducer from being corroded by seawater over a long period of time and thus ensure the accuracy of the measurement of the submarine pipeline. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the multibeam echo detector of this utility model; Figure 3 This is a schematic diagram of the transducer structure of this utility model; Figure 4 This is a schematic diagram of the structure of the support base of this utility model; Figure 5 This is a schematic diagram of the structure of the support rod of this utility model; Figure 6 This is a schematic diagram of the structure of the electric push rod of this utility model; Figure 7 This is a schematic diagram of the connecting rod of this utility model; Figure 8 This is a schematic diagram of the structure of the sonar dome of this utility model.

[0019] In the diagram: 1. Multibeam echo detector; 11. Handle; 12. Display screen; 13. Cover; 14. Buckle; 15. Control panel; 16. Male connector; 17. Support leg; 2. Transducer; 21. Connecting post; 22. Connecting cable; 23. Female connector; 3. Support base; 31. Fixing plate; 32. Fixing hole; 33. Insert post; 34. First stud; 35. First pressure cap; 4. Support rod; 41. First through hole; 42. Guide rod; 4 3. Diagonal brace; 44. Sleeve; 45. Sleeve hole; 5. Electric push rod; 51. Second stud; 52. Second pressure cap; 53. Telescopic rod; 54. Limiting ring; 55. Third pressure cap; 6. Connecting rod; 61. Pressure cap; 62. Bolt hole; 63. Sealing joint; 64. Second through hole; 65. Wire hole; 66. Connecting hole; 67. Socket plate; 68. Guide hole; 7. Sonar cover; 71. Connecting ring; 72. Mounting hole; 73. Sealing gasket. Detailed Implementation

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0022] Example 1 like Figure 1 As shown, a high-precision subsea pipeline detection device includes a multibeam echo sounder 1, which is connected to a transducer 2. The cooperation between the multibeam echo sounder 1 and the transducer 2 facilitates the detection of subsea pipelines. A connecting rod 6 is connected to the top of the transducer 2, which facilitates the suspension of the transducer 2. An electric push rod 5 is connected to the top of the connecting rod 6, and the output end of the electric push rod 5 is detachably connected to the top of the connecting rod 6. The electric push rod 5 facilitates the up-and-down movement of the connecting rod 6 and the transducer 2, thereby facilitating the insertion of the transducer 2 into the water and allowing for easy adjustment of the insertion depth. A support rod 4 is connected to the top of the electric push rod 5, which supports various components. A support base 3 is provided at the end of the support rod 4 away from the electric push rod 5, which is used to fix the device to the hull of the survey vessel.

[0023] like Figure 2 As shown, a handle 11 is located at the center of the front end of the multibeam echo detector 1, facilitating its lifting and movement. A cover 13 is hinged to the rear end of the upper surface of the multibeam echo detector 1. The cover 13 has two latches 14; when closed, the latches 14 engage with the front end of the multibeam echo detector 1. This structure ensures the cover 13 is stably engaged with the front end of the multibeam echo detector 1, protecting its operating surface. A display screen 12 is located on the upper surface of the multibeam echo detector 1, facilitating the display of detection results. A control panel 15 is located along one side of the display screen 12 on the upper surface of the multibeam echo detector 1, facilitating the operation of the entire device. A male connector 16 is located on one side of the multibeam echo detector 1, facilitating connection to the transducer 2. The multibeam echo detector 1 is provided with feet 17 at the bottom corners, which makes it easy for the multibeam echo detector 1 to be placed stably on the workbench.

[0024] like Figure 3As shown, a connecting post 21 is provided at the top center of the transducer 2, and the connecting post 21 is threaded to the bottom end of the connecting rod 6; this facilitates the stable installation and use of the transducer 2. A connecting line 22 is provided in the middle of the connecting post 21, and a connecting female head 23 is provided at the end of the connecting line 22. The connecting female head 23 is connected to the connecting male head 16, which facilitates the stable use of the transducer 2 with the multibeam echo detector 1.

[0025] like Figure 4 As shown, the support base 3 has a fixing plate 31 at its bottom end, and the fixing plate 31 has multiple fixing holes 32 on its edge to facilitate fixing the position of the support base 3 with bolts. The support base 3 has a plug 33 at its top, which is convenient for connecting to the support rod 4. The top of the plug 33 has a first stud 34, and a first pressure cap 35 is threaded onto the first stud 34. The cooperation between the first stud 34 and the first pressure cap 35 facilitates a stable connection between the support base 3 and the support rod 4.

[0026] like Figure 5 As shown, the support rod 4 has a first through hole 41 at one end where the electric push rod 5 is installed, which facilitates the installation of the electric push rod 5. A guide rod 42 is vertically downwardly positioned on the support rod 4 near the first through hole 41; the guide rod 42 guides the connecting rod 6, facilitating stable up-and-down movement of the connecting rod 6. The other end of the support rod 4 has a sleeve 44 with a sleeve hole 45 in the middle. The sleeve hole 45 is fitted onto the insert post 33, and the first pressure cap 35 is pressed against the top of the sleeve 44, ensuring stable cooperation between the support rod 4 and the support base 3. A diagonal brace 43 is provided between the bottom of the support rod 4 and the bottom of the sleeve 44.

[0027] like Figure 6 As shown, the electric actuator 5 has a second stud 51 at its top end. A second pressure cap 52 is located at one end of the second stud 51 that passes through the first through hole 41. The second pressure cap 52 presses against the upper surface of the support rod 4. This structure facilitates a stable connection between the electric actuator 5 and the support rod 4. The output end of the electric actuator 5 has a telescopic rod 53, which facilitates the up-and-down movement of the connecting rod 6. The bottom end of the telescopic rod 53 has a limiting ring 54, and a threaded connector is located in the middle of the limiting ring 54. A third pressure cap 55 is located on the threaded connector. This structure facilitates the threaded connector passing through the top of the connecting rod 6, ensuring a stable connection between the telescopic rod 53 and the connecting rod 6.

[0028] like Figure 7As shown, the top of the connecting rod 6 is provided with a sealing joint 63, and the middle of the sealing joint 63 is provided with a second through hole 64. The sealing joint 63 and the through hole 6441 facilitate the passage of the connecting wire 22 through the connecting rod 6 and ensure a good seal between the connecting wire 22 and the connecting rod 6. The top of the side of the connecting rod 6 is provided with a wire hole 65, which facilitates the passage of the connecting wire 22 through the side of the connecting rod 6. The top of the connecting rod 6 is provided with a connecting hole 66 for connecting to the output end of the electric push rod 5; the side of the connecting rod 6 near the top is provided with a socket plate 67, and the middle of the socket plate 67 is provided with a guide hole 68. The cooperation between the socket plate 67 and the guide hole 68 facilitates the cooperation with the guide rod 42.

[0029] Example 2 like Figure 1 As shown, a high-precision subsea pipeline detection device includes a multibeam echo sounder 1, which is connected to a transducer 2. The cooperation between the multibeam echo sounder 1 and the transducer 2 facilitates the detection of subsea pipelines. A connecting rod 6 is connected to the top of the transducer 2, which facilitates the suspension of the transducer 2. An electric push rod 5 is connected to the top of the connecting rod 6, and the output end of the electric push rod 5 is detachably connected to the top of the connecting rod 6. The electric push rod 5 facilitates the up-and-down movement of the connecting rod 6 and the transducer 2, thereby facilitating the insertion of the transducer 2 into the water and allowing for easy adjustment of the insertion depth. A support rod 4 is connected to the top of the electric push rod 5, which supports various components. A support base 3 is provided at the end of the support rod 4 away from the electric push rod 5, which is used to fix the device to the hull of the survey vessel.

[0030] like Figure 2 As shown, a handle 11 is located at the center of the front end of the multibeam echo detector 1, facilitating its lifting and movement. A cover 13 is hinged to the rear end of the upper surface of the multibeam echo detector 1. The cover 13 has two latches 14; when closed, the latches 14 engage with the front end of the multibeam echo detector 1. This structure ensures the cover 13 is stably engaged with the front end of the multibeam echo detector 1, protecting its operating surface. A display screen 12 is located on the upper surface of the multibeam echo detector 1, facilitating the display of detection results. A control panel 15 is located along one side of the display screen 12 on the upper surface of the multibeam echo detector 1, facilitating the operation of the entire device. A male connector 16 is located on one side of the multibeam echo detector 1, facilitating connection to the transducer 2. The multibeam echo detector 1 is provided with feet 17 at the bottom corners, which makes it easy for the multibeam echo detector 1 to be placed stably on the workbench.

[0031] like Figure 3As shown, a connecting post 21 is provided at the top center of the transducer 2, and the connecting post 21 is threaded to the bottom end of the connecting rod 6; this facilitates the stable installation and use of the transducer 2. A connecting line 22 is provided in the middle of the connecting post 21, and a connecting female head 23 is provided at the end of the connecting line 22. The connecting female head 23 is connected to the connecting male head 16, which facilitates the stable use of the transducer 2 with the multibeam echo detector 1.

[0032] like Figure 4 As shown, the support base 3 has a fixing plate 31 at its bottom end, and the fixing plate 31 has multiple fixing holes 32 on its edge to facilitate fixing the position of the support base 3 with bolts. The support base 3 has a plug 33 at its top, which is convenient for connecting to the support rod 4. The top of the plug 33 has a first stud 34, and a first pressure cap 35 is threaded onto the first stud 34. The cooperation between the first stud 34 and the first pressure cap 35 facilitates a stable connection between the support base 3 and the support rod 4.

[0033] like Figure 5 As shown, the support rod 4 has a first through hole 41 at one end where the electric push rod 5 is installed, which facilitates the installation of the electric push rod 5. A guide rod 42 is vertically downwardly positioned on the support rod 4 near the first through hole 41; the guide rod 42 guides the connecting rod 6, facilitating stable up-and-down movement of the connecting rod 6. The other end of the support rod 4 has a sleeve 44 with a sleeve hole 45 in the middle. The sleeve hole 45 is fitted onto the insert post 33, and the first pressure cap 35 is pressed against the top of the sleeve 44, ensuring stable cooperation between the support rod 4 and the support base 3. A diagonal brace 43 is provided between the bottom of the support rod 4 and the bottom of the sleeve 44.

[0034] like Figure 6 As shown, the electric actuator 5 has a second stud 51 at its top end. A second pressure cap 52 is located at one end of the second stud 51 that passes through the first through hole 41. The second pressure cap 52 presses against the upper surface of the support rod 4. This structure facilitates a stable connection between the electric actuator 5 and the support rod 4. The output end of the electric actuator 5 has a telescopic rod 53, which facilitates the up-and-down movement of the connecting rod 6. The bottom end of the telescopic rod 53 has a limiting ring 54, and a threaded connector is located in the middle of the limiting ring 54. A third pressure cap 55 is located on the threaded connector. This structure facilitates the threaded connector passing through the top of the connecting rod 6, ensuring a stable connection between the telescopic rod 53 and the connecting rod 6.

[0035] like Figure 7As shown, the top of the connecting rod 6 is provided with a sealing joint 63, and the middle of the sealing joint 63 is provided with a second through hole 64. The sealing joint 63 and the second through hole 64 facilitate the passage of the connecting wire 22 through the connecting rod 6 and ensure a good seal between the connecting wire 22 and the connecting rod 6. The top of the side of the connecting rod 6 is provided with a wire hole 65, which facilitates the passage of the connecting wire 22 through the side of the connecting rod 6. The top of the connecting rod 6 is provided with a connecting hole 66 for connecting to the output end of the electric push rod 5; the side of the connecting rod 6 near the top is provided with a socket plate 67, and the middle of the socket plate 67 is provided with a guide hole 68. The cooperation between the socket plate 67 and the guide hole 68 facilitates the cooperation with the guide rod 42.

[0036] like Figure 1 and Figure 7 As shown, it also includes a sonar dome 7, which is fitted onto the transducer 2 for convenient protection of the transducer 2. The acoustic impedance of the sonar dome 7 is close to that of seawater: it is typically made of materials such as fiberglass reinforced plastic (FRP), polyurethane foam, or special sound-permeable rubber, with an acoustic impedance difference of less than 5% compared to seawater, allowing more than 90% of sound waves to pass through (sound transmission rate > 90%), producing only a very small amount of reflection or attenuation. The bottom end of the connecting rod 6 is provided with a pressure cap 61, and the edge of the pressure cap 61 has multiple bolt holes 62. The sonar dome 7 is connected to the pressure cap 61 by bolts, facilitating a stable connection between the connecting rod 6 and the sonar dome 7.

[0037] like Figure 8 As shown, a connecting ring 71 is provided at the top opening of the sonar dome 7. The edge of the connecting ring 71 is provided with multiple mounting holes 72, which facilitates the connection of the sonar dome 7 and the pressure cover 61 by bolts. In addition, a sealing gasket 73 is provided on the upper surface edge of the connecting ring 71, which facilitates the stable connection of the connecting ring 71 to the connecting rod 6.

[0038] Working principle: When the high-precision submarine pipeline detection device is working, the entire device is first fixed to the hull of the survey vessel by bolts through the fixing holes 32 of the fixing plate 31 at the bottom of the support base 3. The sleeve 44 at one end of the support rod 4 is fitted onto the insert 33 at the top of the support base 3 and is pressed and fixed by the first pressure cap 35. The other end is stably installed by the electric push rod 5 through the first through hole 41 and the second pressure cap 52. The telescopic rod 53 at the output end of the electric push rod 5 is connected to the connecting hole 66 at the top of the connecting rod 6 through the threaded joint and the third pressure cap 55. The sleeve plate 67 on the side of the connecting rod 6 is fitted onto the guide rod 42 of the support rod 4 to ensure stable movement. The transducer 2 is threadedly connected to the bottom end of the connecting rod 6 through the top connecting post 21. The connecting line 22 at its end passes through the sealing joint 63 and the wire hole 65 of the connecting rod 6 in sequence, and then connects to the connecting male head 16 of the multibeam echo detector 1 through the connecting female head 23 to realize signal transmission. At the same time, the outer cover of the transducer 2 is equipped with acoustic impedance and The sonar dome 7 has a seawater difference of less than 5% (sound transmission rate > 90%). The sonar dome 7 is bolted to the bottom end cap 61 of the connecting rod 6 through the mounting hole 72 of the connecting ring 71. The sealing gasket 73 ensures a seal and reduces sound wave reflection attenuation. During operation, the equipment is started through the control panel 15 of the multibeam echo detector 1. The detection signal is transmitted to the transducer 2 via the connecting line 22. The transducer 2 converts the electrical signal into sound waves and propagates through the sonar dome 7 in the seawater. The sound waves are reflected after encountering the seabed pipeline to form an echo. The echo is then received by the transducer 2 through the sonar dome 7 and converted into an electrical signal, which is transmitted back to the multibeam echo detector 1 via the connecting line 22. The final detection result is displayed on the display screen 12. The electric push rod 5 can drive the connecting rod 6 and the transducer 2 to move up and down to adjust the water depth. The box cover 13 is closed by the buckle 14 to protect the operating surface when the equipment is not in use. The support leg 17 ensures that the multibeam echo detector 1 is placed stably on the workbench. The handle 11 facilitates its movement.

[0039] In summary, compared with the prior art, this application uses a multibeam echo sounder 1 connected to a transducer 2 to detect submarine pipelines. At the same time, the transducer 2 is suspended by a support rod 4, an electric push rod 5, and a connecting rod 6. In this way, the electric push rod 5 drives the transducer 2 to be smoothly inserted into the seawater. The depth of the transducer 2 inserted into the seawater can be flexibly adjusted according to the detection requirements. After the support bracket is fixed to the hull, it can stably support and adjust the transducer 2, which facilitates the stable and flexible use of the entire detection device.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-precision subsea pipeline detection device, comprising a multibeam echo sounder (1), characterized in that, The multibeam echo detector (1) is connected to a transducer (2), and a connecting rod (6) is connected to the top of the transducer (2). An electric push rod (5) is connected to the top of the connecting rod (6). The output end of the electric push rod (5) is detachably connected to the top of the connecting rod (6). A support rod (4) is connected to the top of the electric push rod (5). A support seat (3) is provided at the end of the support rod (4) away from the electric push rod (5). The support seat (3) is used to fix it to the hull of the measuring vessel.

2. The high-precision submarine pipeline detection device according to claim 1, characterized in that, The multibeam echo detector (1) has a handle (11) at the middle of its front end, and a box cover (13) is hinged to the rear end of the upper surface of the multibeam echo detector (1). The box cover (13) has two buckles (14). When the box cover (13) is closed, the buckles (14) engage with the front end of the multibeam echo detector (1).

3. The high-precision submarine pipeline detection device according to claim 2, characterized in that, The multibeam echo detector (1) has a display screen (12) on its upper surface, and a control panel (15) is provided on one side of the display screen (12) on the upper surface of the multibeam echo detector (1). A male connector (16) is provided on one side of the multibeam echo detector (1), and a foot (17) is provided at the corner of the bottom surface of the multibeam echo detector (1).

4. The high-precision submarine pipeline detection device according to claim 3, characterized in that, The transducer (2) has a connecting post (21) at the top center, and the connecting post (21) is threaded to the bottom end of the connecting rod (6); the connecting post (21) has a connecting line (22) at the middle, and the connecting line (22) has a connecting female head (23) at the end, and the connecting female head (23) is connected to the connecting male head (16).

5. The high-precision submarine pipeline detection device according to claim 1, characterized in that, The support base (3) has a fixing plate (31) at the bottom end, and the fixing plate (31) has multiple fixing holes (32) on its edge. The support base (3) has a plug (33) at the top, and the plug (33) has a first stud (34) at the top end. The first stud (34) is threaded with a first pressure cap (35).

6. The high-precision submarine pipeline detection device according to claim 5, characterized in that, The support rod (4) has a first through hole (41) at one end where the electric push rod (5) is installed, and a guide rod (42) is provided vertically downward near the first through hole (41) on the support rod (4); the other end of the support rod (4) has a sleeve (44), and a sleeve hole (45) is provided in the middle of the sleeve (44). The sleeve hole (45) is fitted onto the insert (33), and the first pressure cap (35) is pressed against the top of the sleeve (44); a diagonal brace (43) is provided between the bottom of the support rod (4) and the bottom of the sleeve (44).

7. A high-precision submarine pipeline detection device according to claim 6, characterized in that, The electric push rod (5) has a second stud (51) at its top end. The end of the second stud (51) that passes through the first through hole (41) has a second pressure cap (52). The second pressure cap (52) is pressed against the upper surface of the support rod (4). The output end of the electric push rod (5) has a telescopic rod (53). The bottom end of the telescopic rod (53) has a limiting ring (54). The middle part of the limiting ring (54) has a threaded joint. The threaded joint has a third pressure cap (55).

8. The high-precision submarine pipeline detection device according to claim 1, characterized in that, The top of the connecting rod (6) is provided with a sealing joint (63), the middle of the sealing joint (63) is provided with a second through hole (64), the top of the side of the connecting rod (6) is provided with a wire hole (65), and the top of the connecting rod (6) is provided with a connecting hole (66) for connecting to the output end of the electric push rod (5); the side of the connecting rod (6) near the top is provided with a socket plate (67), and the middle of the socket plate (67) is provided with a guide hole (68).

9. A high-precision subsea pipeline detection device according to any one of claims 1-8, characterized in that, It also includes a sonar cover (7), which is fitted on the transducer (2). The bottom end of the connecting rod (6) is provided with a pressure cap (61), and the edge of the pressure cap (61) is provided with multiple bolt holes (62). The sonar cover (7) and the pressure cap (61) are connected by bolts.

10. A high-precision submarine pipeline detection device according to claim 9, characterized in that, The sonar dome (7) has a connecting ring (71) at the top opening, and the connecting ring (71) has multiple mounting holes (72) on its edge, and a sealing gasket (73) is provided on the upper surface edge of the connecting ring (71).

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