An ROV-operated underwater multi-quick connector (MQC)

Abstract

The application discloses a kind of ROV operated underwater multi-channel electro-hydraulic quick connection device (MQC), it is related to oil and gas drilling equipment technical field, including outer panel, inner panel, main shaft, driven shaft, first locking mechanism and second locking mechanism, main shaft is provided on outer panel, driven shaft is provided on inner panel, main shaft is connected with driven shaft, first locking mechanism and second locking mechanism are provided on outer panel and inner panel, and first locking mechanism and second locking mechanism are locked and fixed between outer panel and inner panel, driven shaft is connected with second locking mechanism, for driving second locking mechanism to rotate, to realize the unlocking or locking between outer panel and inner panel. By the rotation of main shaft and driven shaft, the locking and unlocking operation of first locking mechanism and second locking mechanism can be realized, compared with the traditional independent single-channel joint one by one docking or complex rigid docking mechanism, the operation steps and operation time of ROV are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of oil and gas drilling equipment technology, and in particular to a multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation. Background Technology

[0002] With the increasing global energy demand, the development of offshore oil and gas fields has gained increasing attention. However, the marine environment, characterized by high pressure, low temperature, and high salinity, along with complex seabed topography, all contribute to the difficulty of offshore oil and gas development. Subsea production trees, as key equipment connecting the subsea wellhead and offshore platform, undertake multiple tasks including oil and gas extraction, separation, metering, and control. The reliability and efficiency of their hydraulic and electrical connections, as well as their adaptability to ROV (Remotely Operated Vehicle) operation, are critical requirements. Subsea multi-channel electro-hydraulic quick-connect (MQC) devices, as an important component of the subsea production tree, are mainly used to achieve rapid and reliable connections with subsea pipelines and equipment. They require even higher reliability and applicability.

[0003] Traditional underwater electro-hydraulic connections mainly rely on independent single-channel connectors or rigid docking mechanisms, which lack adaptability to ROV (remotely operated vehicles) operations. The operation time is long and rigid connections are prone to wear or seal failure, resulting in low safety and reliability, which is not conducive to the long-term stable operation of the device in harsh marine environments. Summary of the Invention

[0004] The purpose of this invention is to provide an underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation to solve the above-mentioned technical problems.

[0005] The technical solution adopted in this invention is as follows: An underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation includes an outer panel, an inner panel, a main shaft, a driven shaft, a first locking mechanism, and a second locking mechanism. The main shaft is disposed on the outer panel, and the driven shaft is disposed on the inner panel. The main shaft is connected to the driven shaft. The first locking mechanism and the second locking mechanism are disposed on the outer panel and the inner panel. The outer panel and the inner panel are locked and fixed together by the first locking mechanism and the second locking mechanism. The driven shaft is connected to the second locking mechanism and is used to drive the second locking mechanism to rotate, so as to realize the unlocking or locking between the outer panel and the inner panel.

[0006] Preferably, the assembly also includes a guide tube and a mounting flange. The guide tube is provided on one side of the inner panel, and one side of the outer panel contacts the guide tube. The mounting flange is provided on the outer wall of the guide tube. An electro-hydraulic female connector is provided on the outer panel, and an electro-hydraulic male connector that mates with the electro-hydraulic female connector is provided on the inner panel.

[0007] Preferably, the first locking mechanism includes an inner locking rod and a locking ring. The middle part of the outer panel is recessed towards the inner panel to form a cylindrical structure. The main shaft passes through the cylindrical structure, and one end of the main shaft is located inside the cylindrical structure. The locking ring is disposed on the outer wall of one end of the main shaft. The inner locking rod is disposed on the inner panel. A first locking hole that cooperates with the inner locking rod is opened on the side wall of the cylindrical structure. A first locking groove that cooperates with the locking ring is opened on the side wall of the inner locking rod.

[0008] As a further preferred embodiment, the structure also includes a positioning rod and a safety pin. The positioning rod is provided on the inner wall of the cylindrical structure, and an unlocking hole and a locking hole are provided on the inner wall of the cylindrical structure. The positioning rod is located on one side of the locking ring, and the unlocking hole and the locking hole are located on the other side of the locking ring. The safety pin is inserted into the unlocking hole or the locking hole.

[0009] Preferably, the second locking mechanism includes an outer locking rod and a driven linkage mechanism. The outer locking rod is disposed on the outer panel, and the inner panel has a second locking hole that cooperates with the outer locking rod. The driven linkage mechanism is disposed on the other side of the inner panel and is connected to the driven shaft. A second locking groove that cooperates with the driven linkage mechanism is disposed on the outer wall of one end of the outer locking rod.

[0010] As a further preferred embodiment, the driven linkage mechanism includes a drive disk, guide grooves, and guide blocks. The drive disk and several guide grooves are provided on the other side of the inner panel. The drive disk is connected to one end of the driven shaft. The several guide grooves are distributed around the drive disk. The guide blocks are slidably disposed inside the guide grooves. One end of the guide block is provided with an inwardly recessed first arc surface. Several arc-shaped protrusions are provided on the outer peripheral wall of the drive disk. The first arc surface cooperates with the arc-shaped protrusions.

[0011] As a further preferred embodiment, the device also includes a locking block and a guide rod. The locking block is provided at the other end of the guide block and cooperates with the second locking groove. One end of the guide rod is rotatably connected to the drive disk, and the other end of the guide rod has a strip-shaped hole. A guide shaft is provided on the guide block and is located in the strip-shaped hole.

[0012] As a further preferred embodiment, the system also includes a spindle retaining ring, which is embedded in the outer wall of the other end of the spindle and is in contact with the cylindrical structure.

[0013] As a further preferred embodiment, the system also includes a driven shaft retaining ring and an inner plate washer. The driven shaft retaining ring is embedded in the outer wall of one end of the driven shaft and contacts the drive disc. The inner plate washer is disposed around one end of the driven shaft and is located between the drive disc and the inner panel. The system also includes a fixing nut and a limiting screw. The outer panel has a mounting hole that mates with the outer locking rod. The other end of the outer locking rod passes through the mounting hole. The fixing nut is disposed on the outer wall of the outer locking rod and abuts against one side of the outer panel. A threaded hole is formed on the outer peripheral wall of the outer panel and communicates with the mounting hole. The limiting screw is disposed in the threaded hole and abuts against the outer wall of the outer locking rod.

[0014] Preferably, the outer panel also includes handles, with two handles provided at both ends.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] (1) In this invention, the locking and unlocking operations of the first locking mechanism and the second locking mechanism can be realized by rotating the main shaft and the driven shaft. Compared with the traditional independent single-channel connectors that are connected one by one or the complex rigid connection mechanism, the operation steps and operation time of ROV are greatly reduced.

[0017] (2) In this invention, by setting the first locking mechanism and the second locking mechanism, double locking protection can be achieved. The cooperation between the inner locking rod and the locking ring, as well as the cooperation between the outer locking rod and the driven linkage mechanism, can effectively resist the impact of water flow, vibration and other external forces in the marine environment and prevent the connection parts from loosening.

[0018] (3) In this invention, the safety pin provided in the first locking mechanism provides additional protection for the safety of the device. Even in unexpected situations, such as when the equipment is subjected to a sudden external force impact causing the locking ring or outer locking rod to have an abnormal rotation tendency, the safety pin can prevent it from rotating further and avoid unlocking. This multi-protection mechanism greatly reduces the risk of safety accidents caused by connection failure, protects the marine environment and the safety of workers, and reduces potential economic losses.

[0019] (4) The multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation in this invention has a simple structure and is easy to operate. The inner and outer locking rods can effectively ensure the position locking of the multi-channel electro-hydraulic quick-connect device (MQC). The structure is equipped with multiple locking structures such as safety pins and inner and outer locking rods, which have achieved significant results in terms of safety and reliability, ensuring the long-term stable operation of the structure in harsh marine environments. Attached Figure Description

[0020] Figure 1An isometric sectional view of the unlocked state of the underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation according to the present invention;

[0021] Figure 2 An isometric sectional view of the locked state of the underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation according to the present invention;

[0022] Figure 3 This is a partial cross-sectional view of the locked state of the underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation according to the present invention.

[0023] In the diagram: 1. Outer panel; 2. Spindle; 3. Locking ring; 4. Outer locking rod; 5. Fixing nut; 6. Limit screw; 7. Safety pin; 8. Handle; 9. Electro-hydraulic female connector; 10. Inner panel; 11. Locking block; 12. Guide block; 13. Guide groove; 14. Guide rod; 15. Driven shaft; 16. Drive disc; 17. Electro-hydraulic male connector; 18. Driven shaft retaining ring; 19. Inner plate washer; 20. Spindle retaining ring; 21. Inner locking rod; 22. Guide cylinder; 23. Mounting flange; 24. Positioning rod; 25. Cylindrical structure; 26. First locking hole; 27. Driven linkage mechanism; 28. Second locking hole; 29. ​​Second locking groove; 30. Arc-shaped protrusion; 31. Strip hole; 32. Guide shaft. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not 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 invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Figure 1 An isometric sectional view of the unlocked state of the underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation according to the present invention; Figure 2 An isometric sectional view of the locked state of the underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation according to the present invention; Figure 3 This is a partial cross-sectional view of the locked state of the underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation according to the present invention. Please refer to... Figures 1 to 3 As shown, a preferred embodiment is illustrated, illustrating an underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation, including an outer panel 1, an inner panel 10, a main shaft 2, a driven shaft 15, a first locking mechanism, and a second locking mechanism. The main shaft 2 is disposed on the outer panel 1, and the driven shaft 15 is disposed on the inner panel 10. The main shaft 2 is connected to the driven shaft 15. The first locking mechanism and the second locking mechanism are disposed on the outer panel 1 and the inner panel 10, and the outer panel 1 and the inner panel 10 are locked and fixed together by the first locking mechanism and the second locking mechanism. The driven shaft 15 is connected to the second locking mechanism and is used to drive the second locking mechanism to rotate, so as to unlock or lock the outer panel 1 and the inner panel 10. In this embodiment, compared to traditional independent single-channel connectors or rigid docking mechanisms, this structure allows the ROV to more clearly grasp the connection and unlocking operation process during operation. By controlling the rotation of the main spindle 2 to drive the driven shaft 15, locking and unlocking between the outer panel 1 and the inner panel 10 can be easily achieved, greatly improving the adaptability of ROV operation, reducing operation time, and increasing work efficiency. When the main spindle 2 rotates, it can drive the first locking mechanism to unlock or lock, and simultaneously drive the driven shaft 15 to rotate. Conversely, when the driven shaft 15 rotates, it can drive the second locking mechanism to unlock or lock. One end of the main spindle 2 is used to connect to the external ROV's operating rotary tool, which drives the main spindle 2 to rotate. The other end of the driven shaft 15 is provided with an interface for connecting to the main spindle 2.

[0028] Furthermore, as a preferred embodiment, it also includes a guide cylinder 22 and a mounting flange 23. The guide cylinder 22 is provided on one side of the inner panel 10, and one side of the outer panel 1 contacts the guide cylinder 22. The mounting flange 23 is provided on the outer wall of the guide cylinder 22. An electro-hydraulic female connector 9 is provided on the outer panel 1, and an electro-hydraulic male connector 17 that mates with the electro-hydraulic female connector 9 is provided on the inner panel 10. In this embodiment, the mounting flange 23 is used to fix it to the subsea production tree. The guide cylinder 22 facilitates the assembly of the outer panel 1 and the inner panel 10. During assembly, the outer panel 1 contacts the end face of the guide cylinder 22.

[0029] Furthermore, as a preferred embodiment, the first locking mechanism includes an inner locking rod 21 and a locking ring 3. A cylindrical structure 25 is formed by recessing the middle of the outer panel 1 towards the inner panel 10. The main shaft 2 passes through the cylindrical structure 25, with one end of the main shaft 2 located inside the cylindrical structure 25. The locking ring 3 is disposed on the outer wall of one end of the main shaft 2. The inner locking rod 21 is disposed on the inner panel 10. A first locking hole 26 that mates with the inner locking rod 21 is formed on the side wall of the cylindrical structure 25. A first locking groove that mates with the locking ring 3 is formed on the side wall of the inner locking rod 21. This design allows the inner locking rod 21 and the locking ring 3 to cooperate, achieving connection while effectively preventing loosening during use and avoiding relative movement between the outer panel 1 and the inner panel 10, greatly improving the reliability of the connection. When the main shaft 2 rotates, it can drive the locking ring 3 to rotate, causing the locking ring 3 to enter or leave the first locking groove.

[0030] Furthermore, as a preferred embodiment, it also includes a positioning rod 24 and a safety pin 7. The positioning rod 24 is provided on the inner wall of the cylindrical structure 25, and an unlocking hole and a locking hole are provided on the inner wall of the cylindrical structure 25. The positioning rod 24 is located on one side of the locking ring 3, and the unlocking hole and the locking hole are located on the other side of the locking ring 3. The safety pin 7 is inserted into the unlocking hole or the locking hole. When the safety pin 7 is inserted into the unlocking hole, the locking ring 3 can rotate freely. When the safety pin 7 is inserted into the locking hole, the rotation of the locking ring 3 can be prevented.

[0031] Furthermore, as a preferred embodiment, the second locking mechanism includes an outer locking rod 4 and a driven linkage mechanism 27. The outer locking rod 4 is disposed on the outer panel 1, and the inner panel 10 has a second locking hole 28 that mates with the outer locking rod 4. The driven linkage mechanism 27 is disposed on the other side of the inner panel 10 and is connected to the driven shaft 15. A second locking groove 29 that mates with the driven linkage mechanism 27 is disposed on the outer wall of one end of the outer locking rod 4. Through this dual locking mechanism design of the first and second locking mechanisms, the overall reliability of the device is further enhanced, avoiding connection failure problems that may occur due to a single locking method.

[0032] Furthermore, as a preferred embodiment, the driven linkage mechanism 27 includes a drive disk 16, guide grooves 13, and guide blocks 12. The drive disk 16 and several guide grooves 13 are disposed on the other side of the inner panel 10. The drive disk 16 is connected to one end of the driven shaft 15. The several guide grooves 13 are distributed around the periphery of the drive disk 16. A guide block 12 is slidably disposed inside the guide groove 13. One end of the guide block 12 has an inwardly recessed first arc surface. Several arc-shaped protrusions 30 are disposed on the outer peripheral wall of the drive disk 16, and the first arc surface cooperates with the arc-shaped protrusions 30. The cooperation of the drive disk 16, guide grooves 13, and guide blocks 12 in the driven linkage mechanism 27, as well as the arrangement of the locking block 11 and guide rod 14, improves the working performance of the second locking mechanism and further enhances the safety and stability of the device. The guide block 12 engages with the arc-shaped protrusion 30 on the outer peripheral wall of the drive disk 16 via the first arc surface. When the drive disk 16 rotates, the arc-shaped protrusion 30 can push the guide block 12 to move the locking block 11 and engage or disengage with the second locking groove 29 of the outer locking rod 4, ensuring the accuracy and safety of the operation.

[0033] Furthermore, as a preferred embodiment, it also includes a locking block 11 and a guide rod 14. The other end of the guide block 12 is provided with the locking block 11, which cooperates with the second locking groove 29. One end of the guide rod 14 is rotatably connected to the drive disk 16, and the other end of the guide rod 14 is provided with a strip hole 31. A guide shaft 32 is provided on the guide block 12 and is located in the strip hole 31. The guide shaft 32 can slide in the strip hole 31, which is arranged along the axial direction of the guide rod 14. When the drive disk 16 rotates, it can push the guide block 12 to move and simultaneously drive the guide rod 14 to rotate. The guide rod 14 can push or pull the guide block 12 to slide in the guide groove 13, thereby driving the locking block 11 to move. This facilitates the locking block 11 to enter or leave the second locking groove 29, realizing the locking or unlocking between the outer panel 1 and the inner panel 10.

[0034] Furthermore, as a preferred embodiment, it also includes a spindle retaining ring 20. The spindle retaining ring 20 is embedded in the outer wall of the other end of the spindle 2, and the spindle retaining ring 20 contacts the cylindrical structure 25. The spindle 2 is fixed to the cylindrical structure 25 by the spindle retaining ring 20, and a limit ring is provided at one end of the spindle 2 for pressing the locking ring 3.

[0035] Furthermore, as a preferred embodiment, it also includes a driven shaft retaining ring 18 and an inner plate washer 19. The driven shaft retaining ring 18 is embedded on the outer wall of one end of the driven shaft 15, and the driven shaft retaining ring 18 contacts the drive disk 16. An inner plate washer 19 is provided on the periphery of one end of the driven shaft 15, and the inner plate washer 19 is located between the drive disk 16 and the inner panel 10. By setting the driven shaft retaining ring 18, the drive disk 16 is fixed on the driven shaft 15, preventing the drive disk 16 from detaching from the driven shaft 15. By setting the inner plate washer 19, the stability and reliability of the drive disk 16 installation are further improved.

[0036] It also includes a fixing nut 5 and a limiting screw 6. The outer panel 1 is provided with a mounting hole that mates with the outer locking rod 4. The other end of the outer locking rod 4 passes through the mounting hole. The fixing nut 5 is provided on the outer wall of the outer locking rod 4, and the fixing nut 5 abuts against one side of the outer panel 1. A threaded hole is provided on the outer peripheral wall of the outer panel 1, and the threaded hole communicates with the mounting hole. The limiting screw 6 is provided in the threaded hole, and the limiting screw 6 abuts against the outer wall of the outer locking rod 4. The fixing nut 5 and the outer locking rod 4 are threadedly engaged. The fixing nut 5 is used to lock the outer locking rod 4 to the outer panel 1. By tightening the limiting screw 6, axial movement of the outer locking rod 4 can be prevented. In conjunction with the locking block 11 and the second locking groove 29, the rotation of the outer locking rod 4 is further restricted.

[0037] Furthermore, as a preferred embodiment, it also includes handles 8. Two handles 8 are provided at both ends of the outer panel 1 to facilitate gripping of the ROV during underwater operation and improve the ease of operation.

[0038] In use, bolts pass through eight holes on the mounting flange 23 to secure the inner panel 10 to the submersible production tree. When it is necessary to lock the outer panel onto the inner panel, the unlocked state of the multi-channel electro-hydraulic quick-connect device of this invention is as follows: Figure 1As shown. In this state, the ROV robot grips the handle 8 on the outer panel, aligns the outer locking rod 4 with the four second locking holes 28 on the inner panel 10, and pushes the outer panel 1 so that the front end of the outer locking rod 4 passes through the second locking holes 28. When the outer panel 1 coincides with the guide cylinder 22, the pushing stops. At this time, the front end of the inner locking rod 21 also passes through the first locking hole 26 on the outer panel 1, and the main shaft 2 is connected to the driven shaft 15. After the ROV grips the handle 8 on one side, it operates the rotating tool connected to the main shaft 2, controlling the main shaft 2 to rotate counterclockwise by 45°. After the main shaft 2 drives the locking ring 3 to rotate by 45°, the outer end of the locking ring 3 enters the first locking groove of the inner locking rod 21. At this time, the locking ring 3 restricts the forward and backward movement of the inner locking rod 21, and the first locking is completed. The rotation of the main shaft 2 drives the driven shaft 15 to rotate 45°, and the drive disk 16 connected to the driven shaft 15 also rotates 45°. At this time, during the rotation of the drive disk 16, the arc-shaped protrusion 30 on its outer wall contacts the first arc surface of the guide block 12, pushing the guide block 12 to move outward in the guide groove 13. Then, the locking block 11 connected to the guide block 12 enters the second locking groove 29 on the outer locking rod 4. At this time, the locking block 11 restricts the forward and backward movement of the outer locking rod 4, and the double locking is completed. The safety pin 7 is inserted from the unlocking hole to the locking hole. At this time, the safety pin 7 restricts the circumferential rotation of the locking ring 3. The outer panel 1 and the inner panel 10 of the multi-channel electro-hydraulic quick-connect device are mechanically engaged, and the multi-channel electro-hydraulic quick-connect device is in the locked state.

[0039] When it is necessary to unlock the outer panel 1 from the inner panel 10, the locking state of the multi-channel electro-hydraulic quick-connect device of the invention is as follows: Figure 2 As shown. In this state, insert the safety pin 7 from the locking hole to the unlocking hole. At this time, the safety pin 7 does not restrict the circumferential rotation of the locking ring 3. After the ROV grasps the handle 8 on one side, operate the rotating tool to connect the spindle 2, and rotate the spindle 2 clockwise by 45°. After the spindle 2 drives the locking ring 3 to rotate 45°, the outer end of the locking ring 3 disengages from the first locking groove on the inner locking rod 21. At this time, the outer end of the locking ring 3 is in contact with the safety pin 7 and the positioning rod 24 respectively. The locking ring 3 does not restrict the forward and backward movement of the inner locking rod 21, and the first unlocking is completed. The rotation of the main shaft 2 causes the driven shaft 15 to rotate 45°, and the drive disk 16 connected to the driven shaft 15 also rotates 45°. At this time, during the rotation of the drive disk 16, the guide rod 14 connected to it moves inward, and the guide block 12 connected to the guide rod 14 also moves inward. The guide block 12 pulls the locking block 11 away from the second locking slot 29 on the outer locking rod 4. At this time, the locking block 11 has no restriction on the forward and backward movement of the outer locking rod 4, and the double unlocking is completed. The ROV robot grabs the two handles 8 on the outer panel 1 and pulls them outward, causing the outer panel 1 and the outer locking rod 4 to move outward. When the outer locking rod 4 is completely disengaged from the second locking hole 28 on the inner panel 10, the outer panel 1 is unlocked from the inner panel 10. At this time, the multi-channel electro-hydraulic quick-connect device is in the unlocked state.

[0040] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. An underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation, characterized in that, The device includes an outer panel, an inner panel, a main shaft, a driven shaft, a first locking mechanism, and a second locking mechanism. The main shaft is disposed on the outer panel, and the driven shaft is disposed on the inner panel. The main shaft is connected to the driven shaft. The first locking mechanism and the second locking mechanism are disposed on the outer panel and the inner panel, and the outer panel and the inner panel are locked and fixed together by the first locking mechanism and the second locking mechanism. The driven shaft is connected to the second locking mechanism and is used to drive the second locking mechanism to rotate, so as to unlock or lock the outer panel and the inner panel. The first locking mechanism includes an inner locking rod and a locking ring. The middle part of the outer panel is recessed towards the inner panel to form a cylindrical structure. The main shaft passes through the cylindrical structure, and one end of the main shaft is located inside the cylindrical structure. The locking ring is disposed on the outer wall of one end of the main shaft. The inner locking rod is disposed on the inner panel. A first locking hole that cooperates with the inner locking rod is opened on the side wall of the cylindrical structure. A first locking groove that cooperates with the locking ring is opened on the side wall of the inner locking rod. The second locking mechanism includes an outer locking rod and a driven linkage mechanism. The outer locking rod is disposed on the outer panel, and a second locking hole that cooperates with the outer locking rod is provided on the inner panel. The driven linkage mechanism is disposed on the other side of the inner panel and is connected to the driven shaft. A second locking groove that cooperates with the driven linkage mechanism is provided on the outer wall of one end of the outer locking rod.

2. The underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation as described in claim 1, characterized in that, It also includes a guide tube and a mounting flange. The guide tube is provided on one side of the inner panel, and one side of the outer panel contacts the guide tube. The mounting flange is provided on the outer wall of the guide tube. An electro-hydraulic female connector is provided on the outer panel, and an electro-hydraulic male connector that mates with the electro-hydraulic female connector is provided on the inner panel.

3. The underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation as described in claim 2, characterized in that, It also includes a positioning rod and a safety pin. The positioning rod is provided on the inner wall of the cylindrical structure. The inner wall of the cylindrical structure has an unlocking hole and a locking hole. The positioning rod is located on one side of the locking ring. The unlocking hole and the locking hole are located on the other side of the locking ring. The safety pin is inserted into the unlocking hole or the locking hole.

4. The underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation as described in claim 1, characterized in that, The driven linkage mechanism includes a drive disk, guide grooves, and guide blocks. The drive disk and several guide grooves are provided on the other side of the inner panel. The drive disk is connected to one end of the driven shaft. Several guide grooves are distributed around the drive disk. The guide blocks are slidably arranged inside the guide grooves. One end of the guide block is provided with an inwardly recessed first arc surface. Several arc-shaped protrusions are provided on the outer peripheral wall of the drive disk. The first arc surface cooperates with the arc-shaped protrusions.

5. The underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation as described in claim 4, characterized in that, It also includes a locking block and a guide rod. The other end of the guide block is provided with the locking block, which cooperates with the second locking groove. One end of the guide rod is rotatably connected to the drive disk, and the other end of the guide rod has a strip-shaped hole. The guide block is provided with a guide shaft, which is located in the strip-shaped hole.

6. The underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation as described in claim 1, characterized in that, It also includes a spindle retaining ring, which is embedded on the outer wall of the other end of the spindle and is in contact with the cylindrical structure.

7. The underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation as described in claim 4, characterized in that, It also includes a driven shaft retaining ring and an inner plate washer. The driven shaft retaining ring is embedded on the outer wall of one end of the driven shaft and contacts the drive disk. The inner plate washer is provided on the periphery of one end of the driven shaft and is located between the drive disk and the inner panel. It also includes a fixing nut and a limiting screw. The outer panel is provided with a mounting hole that mates with the outer locking rod. The other end of the outer locking rod passes through the mounting hole. The fixing nut is provided on the outer wall of the outer locking rod. The fixing nut abuts against one side of the outer panel. A threaded hole is provided on the outer peripheral wall of the outer panel. The threaded hole communicates with the mounting hole. The limiting screw is provided in the threaded hole and abuts against the outer wall of the outer locking rod.

8. The underwater multi-channel electro-hydraulic quick-connect device (MQC) for ROV operation as described in claim 1, characterized in that, It also includes handles, with two handles provided at both ends of the outer panel.

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