Underwater control module launch and recovery tool

Abstract

The application discloses a underwater control module lowering and recovering tool, which comprises an upper cover plate, a protective cover plate and a protective cover arranged in sequence from top to bottom; further comprises a soft landing mechanism, a lifting hook mechanism and a locking mechanism; characterized in that: further comprising a lock state indicating structure, the lock state indicating structure comprising a locking state indicating rod and an indicating mark; when the upper end of the locking state indicating rod is level with the locking indicating mark, the lock block is in a fully ejected lock block state; when the upper end of the locking state indicating rod is level with the unlocking indicating mark, the lock block is in a fully retracted state. The application has the advantages that: the locking state of the locking mechanism can be accurately and timely known, the state indication is reliable, and misoperation is avoided; the structure is ingeniously designed, and the design and processing costs are low.

Description

Technical Field

[0001] This invention belongs to the field of underwater control module tools, and specifically relates to an underwater control module deployment and recovery tool. Background Technology

[0002] The subsea production control system is the core system for controlling and monitoring the functions of subsea oil production equipment. The Subsea Control Module (SCM) is a key component of the subsea production control system. The top of the SCM has an interface for lowering or retrieving the module (this interface is typically a Class 4 torque tool interface used for lifting and torsion control). The SCM is lowered (installed on the subsea production tree) and retrieved (removed from the subsea production tree) using specialized tools.

[0003] The prior art, document CN112355596A, discloses an "Underwater Control Module Installation Tool," which includes a lifting unit, a locking unit, an upper top plate, and a lower cylinder. This technical solution uses the lifting unit to hoist the SCM installation tool and the locking unit; the locking unit locks the SCM installation tool and the underwater control module (SCM), as well as the SCM and SCMMB; the hydraulic system on the upper top plate enables a soft landing of the SCM; and the lower cylinder locks the SCM installation tool to the guide tube and allows divers / ROVs to observe the SCM lowering and installation process.

[0004] The shortcomings of the above-mentioned "underwater control module installation tool" are as follows:

[0005] Divers or ROVs control the position raising and lowering of the moving disc (locking core) and the maintenance of its position by operating interlocking switches and locking switches. However, the interlocking switches and locking switches are both flat block structures and lack corresponding prompts or indicators. As a result, it is not possible to determine the state of the interlocking switches and locking switches in a timely and accurate manner before and after rotation, which can easily lead to misoperation.

[0006] Based on this, the applicant is considering designing an underwater control module deployment and recovery tool that is more accurate and reliable in operation and can better avoid misoperation. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to provide an underwater control module deployment and recovery tool that is more accurate and reliable in operation and can better avoid misoperation.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] The underwater control module lowering and recovery tool includes, from top to bottom, an upper cover plate, a protective cover plate, and a protective cover; it also includes a soft landing mechanism, a hook mechanism, and a locking mechanism.

[0010] The upper cover plate is connected to the annular protective cover plate through the soft landing mechanism, and a protective cover with an integral cylindrical structure is coaxially fixedly installed on the lower side of the protective cover plate.

[0011] The hook mechanism is fixedly installed on the upper side of the upper cover plate; the locking mechanism is fixedly installed in the middle of the upper cover plate. The locking mechanism has a drive spindle that can be driven vertically inside. The drive spindle is used to push out the lock block or retract it, so that the lock block can be inserted into or removed from the annular lock groove inside the top interface of the underwater control module to achieve locking or unlocking.

[0012] Its features are:

[0013] It also includes a lock status indicator structure, which includes a lock status indicator rod and an indicator mark;

[0014] The lower end of the locking status indicator rod is fixedly connected to the upper end face of the drive spindle, and the upper section of the locking status indicator rod passes through and protrudes from the top of the locking mechanism;

[0015] The hook mechanism is fixed to the top outer upper surface of the locking mechanism. The indicator marks include a locking indicator mark and an unlocking indicator mark arranged sequentially from bottom to top in the height direction of the hook mechanism. When the upper end of the locking state indicator rod is at the same height as the locking indicator mark, the locking block is in the fully ejected locking block state. When the upper end of the locking state indicator rod is at the same height as the unlocking indicator mark, the locking block is in the fully retracted locking block state.

[0016] Compared with existing technologies, the underwater control module deployment and recovery tool of the present invention has the following advantages:

[0017] 1. It can accurately and promptly determine the locking status of the locking mechanism, with reliable status indication to avoid misoperation.

[0018] In this technical solution, the locking status indicator rod is fixedly connected to the drive spindle at its lower end, so it can accurately rise and fall with the drive spindle, accurately displaying the position of the drive spindle (and the corresponding position of the lock block), and the rising and falling action is reliable. At the same time, the rising and falling of the upper end of the locking status indicator rod, combined with the indicator mark, can accurately and reliably indicate whether the lock block is in the locked or unlocked state, avoiding misoperation.

[0019] 2. The structure is ingeniously designed, resulting in low design and manufacturing costs.

[0020] The locking status indicator has a simple structure, and its lower end is easy to fix to the upper surface of the drive spindle; the indicator mark can be machined by milling or painted. Both the locking status indicator and the indicator mark are relatively easy to manufacture, have low implementation costs, and offer good performance. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the underwater control module deployment and recovery tool of the present invention.

[0022] Figure 2 This is a front view of the underwater control module deployment and recovery tool of the present invention.

[0023] Figure 3 This is a top view of the underwater control module's deployment and recovery tool according to the present invention.

[0024] Figure 4 for Figure 3 Sectional view along line AA

[0025] The diagram is marked as follows:

[0026] 10 Top Cover Plate

[0027] 20 Protective Cover Plate

[0028] 30 Protective Cover: 31 Straightening Block

[0029] Soft landing mechanism: 40 hydraulic quick-connect socket, 41 underwater control ball valve, 42 soft landing hydraulic cylinder

[0030] Locking mechanism: 50 Mounting cylinder, 51 Crankshaft, 52 Connecting rod, 53 Drive spindle, 54 Locking block, 55 Handle, 56 Limiting plate, 57 Locking positioning pin, 58 Insert cylinder, 59 Positioning baffle, 501 Limiting screw

[0031] Hook mechanism: 60 flange connection plate, 61 lifting lug, 62 shackle

[0032] Lock status indicator structure: 70 Locked status indicator rod, 71 Locked indicator mark, 72 Unlocked indicator mark. Wire guide structure: 80 Clearance notch, 81 Enclosure protrusion, 82 Slotted screw.

[0033] Soft landing seat placement indicator structure: 90 placement indicator rods, 91 observation notches Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings.

[0035] In practical implementation: such as Figures 1 to 4 As shown, the underwater control module lowering and recovery tool includes, from top to bottom, an upper cover plate, a protective cover plate, and a protective cover; it also includes a soft landing mechanism, a hook mechanism, and a locking mechanism.

[0036] The upper cover plate is connected to the annular protective cover plate through the soft landing mechanism, and a protective cover with an integral cylindrical structure is coaxially fixedly installed on the lower side of the protective cover plate.

[0037] The hook mechanism is fixedly installed on the upper side of the upper cover plate; the locking mechanism is fixedly installed in the middle of the upper cover plate. The locking mechanism has a drive spindle that can be driven vertically inside. The drive spindle is used to push out the lock block or retract it, so that the lock block can be inserted into or removed from the annular lock groove inside the top interface of the underwater control module to achieve locking or unlocking.

[0038] It also includes a lock status indicator structure, which includes a lock status indicator rod and an indicator mark;

[0039] The lower end of the locking status indicator rod is fixedly connected to the upper end face of the drive spindle, and the upper section of the locking status indicator rod passes through and protrudes from the top of the locking mechanism;

[0040] The hook mechanism is fixed to the top outer upper surface of the locking mechanism. The indicator marks include a locking indicator mark and an unlocking indicator mark arranged sequentially from bottom to top in the height direction of the hook mechanism. When the upper end of the locking state indicator rod is at the same height as the locking indicator mark, the locking block is in the fully ejected locking block state. When the upper end of the locking state indicator rod is at the same height as the unlocking indicator mark, the locking block is in the fully retracted locking block state.

[0041] The locking mechanism includes a mounting cylinder, a crankshaft, a connecting rod, the drive spindle, and the locking block;

[0042] The mounting cylinder is fixedly installed in the middle of the upper cover plate, and the mounting cylinder has an upper mounting section located in the upper space of the upper cover plate and a lower mounting section located in the lower space of the upper cover plate; the upper mounting section is provided with a crankshaft that extends radially and is rotatable, and one end of the crankshaft extends out of the outer side of the upper mounting section and constitutes a control part;

[0043] The drive spindle is slidably inserted into the lower mounting section, and the top of the drive spindle is connected to the crankshaft by the connecting rod to form a crank-connecting rod mechanism.

[0044] The locking block is inserted into the side wall of the lower section of the installation, and the radial inner side of the locking block and the radial outer side of the drive spindle have a mating surface that allows for ejection.

[0045] With the above locking mechanism, the connecting rod can be driven to lift the drive spindle by rotating the control unit on the crankshaft of the ROV or diver, thereby causing the lock block to be pushed out to lock or to be pushed back to unlock. The above locking mechanism has a simple and compact structure, reliable operation, and is easy to use.

[0046] The hook mechanism includes a flange connecting plate, lifting lugs, and shackles;

[0047] The flange connecting plate is fastened to the upper end face of the mounting cylinder by screws; the flange connecting plate is provided with a through hole for the upper section of the locking status indicator rod to pass through;

[0048] The lifting lug, which is integrally shaped like a vertical block, is fixedly installed at the middle position of the outer upper end face of the flange connecting plate, and the shackle is installed at the top position of the lifting lug;

[0049] The outer surface of the lug is provided with locking and unlocking indicators, each of which includes scale lines and character marks.

[0050] In practice, it is preferable that the scale line is a longitudinal scale line that runs horizontally through the width of the lug, and that the locking indicator is marked with the character "L" and the unlocking indicator is marked with the character "U". Here, "L" represents "LOCK" and "U" represents "Unlock". This facilitates accurate alignment and identification of the real-time status of the locking mechanism, ensuring precise operation.

[0051] The connection between the flange connecting plate and the mounting cylinder in the hook mechanism is reliable. At the same time, it is also convenient to drill holes in the flange connecting plate for the upper section of the locking status indicator rod to pass through. In addition, it is also convenient to use casting or welding processes to process lifting lugs on the flange connecting plate, which makes the hook mechanism structurally reliable and can effectively ensure the reliability of lifting.

[0052] The crankshaft control section has an extension section that extends outward along the axial direction.

[0053] The locking mechanism also includes a handle with an overall U-shaped structure, and the two ends of the open side of the U-shaped structure of the handle are fixedly connected to the extension of the crankshaft.

[0054] The structure of the above extension section and handle increases torque, making crankshaft rotation easier and more reliable; and the above U-shaped handle is also convenient for ROVs or divers to hold and operate.

[0055] The locking mechanism also includes a handle limiting structure, and a limiting plate is fixedly installed on the upper surface of the upper cover plate;

[0056] The limiting plate is used to block and limit the handle at 0 degrees or 180 degrees, so that the handle can rotate around the crankshaft within the range of 0 degrees to 180 degrees, and when the handle is at 0 degrees or 180 degrees, the locking block is in a fully ejected locking block state or a fully retracted locking block state.

[0057] By adopting the above limit plate structure, the handle can only rotate from 0 degrees to 180 degrees, and the 0-degree and 180-degree positions are either fully ejected from the lock block or fully retracted, which can achieve more precise locking and unlocking operations, and also makes it easier to correctly identify and judge the locking status by the position of the handle.

[0058] The limiting plate is symmetrical about the vertical plane when the handle is at 90 degrees, and the outer side of the limiting plate away from the mounting cylinder is divided into a left area and a right area; one area of ​​the left area and the right area has an unlocking mark, and the other area has a locking mark.

[0059] As shown in the figure, in practice, the unlocking flag is preferably U, and the locking flag is L. Here, L represents "LOCK" and U represents "Unlock".

[0060] In this way, the above limit plates can not only limit the movement of the handle, but also indicate the movement status of the handle, and promptly and accurately show whether the handle is in a locked or unlocked state after rotation, which helps to improve the accuracy and efficiency of the underwater control module's lowering and retrieval.

[0061] At the same time, the limit plate and the markings and handles on its surface, together with the lock status indicator structure, constitute a dual indicator structure for both locked and unlocked states, which can more reliably display the true state of the lock block and more effectively avoid misoperation.

[0062] The locking mechanism also includes a locking positioning pin, a insert, and a positioning baffle;

[0063] The handle is fixedly mounted with the insert, and the locking positioning pin is slidably inserted into the insert. One end of the locking positioning pin can extend and retract into the insert to form a locking engagement end, and the other end of the locking positioning pin is fixedly mounted with a control handle.

[0064] The centerline of the locking positioning pin is parallel to the centerline of the crankshaft;

[0065] The positioning baffle is fixedly installed on the upper surface of the upper cover plate. The positioning baffle has a positioning hole that allows the locking end of the locking positioning pin to be inserted and limited. When the locking end of the locking positioning pin is aligned with the positioning hole, the locking block is in a fully ejected state.

[0066] The above structure allows the ROV to push the control handle when the locking end of the locking positioning pin is aligned with the positioning hole, so that the locking end of the locking positioning pin is inserted into the positioning hole to achieve positioning. This reliably keeps the lock block in the fully ejected state, ensuring reliable locking of the underwater control module.

[0067] At least two locking blocks are evenly spaced along the circumference of the mounting cylinder. A limiting screw corresponding to each locking block is fixedly installed on the lower end face of the mounting cylinder. Each limiting screw is threaded into a corresponding threaded hole on the lower end face of the mounting cylinder, and the upper end of a single limiting screw is inserted into a guide slot on the lower side of a corresponding locking block. The length direction of the guide slot is consistent with the movement direction of the locking block.

[0068] In practice, the ejection of the locking block can be limited by a stop provided on the radially inner side of the guide slot, and the retraction of the locking block can be limited by the circumferentially outer side of the contraction section of the lower section of the drive spindle. This allows for radial reciprocating movement of the locking block.

[0069] The above assembly structure of the limit screw and the locking block ensures accurate back-and-forth movement of the locking block and maintains its proper posture by inserting the upper end of the limit screw into the guide slot on the lower side of the locking block, thus preventing the locking block from rotating. This better ensures that the locking block always maintains a consistent posture and can be reliably inserted into and removed from the annular locking groove inside the top interface of the underwater control module, ensuring reliable and smooth unlocking and locking.

[0070] The underwater control module lowering and recovery tool also includes a wire guide structure. The wire guide structure includes clearance notches. Two vertically penetrating clearance notches are symmetrically arranged at the circumferential edge of the common circumference of the upper cover plate and the protective cover plate. The radially outer end of each clearance notch protrudes outward in the transverse circumferential direction to form a wrapping protrusion. The outer end of the wrapping protrusion in the transverse circumferential direction is provided with a radially penetrating mounting hole. Each clearance notch also has a threaded hole on its sidewall that is directly opposite the mounting hole, and a slotted screw is provided in the mounting hole and the threaded hole.

[0071] Unlike existing technologies that use guide tubes to cooperate with guide wires in guide lowering structures, the guide tube structure occupies more space and is not conducive to maintaining the simplicity and compactness of the tool structure.

[0072] The structure of this technical solution, which combines the above-mentioned clearance notch, mounting hole, and slotted screw, can reliably surround and guide the guide wire, and can quickly detach from the guide wire after the slotted screw is removed. The structure of this technical solution is more concise and ingenious, and can help reduce the weight of the tool and reduce the transfer load.

[0073] In practice, the soft landing mechanism includes a hydraulic quick-connect socket, an underwater control ball valve, and a soft landing hydraulic cylinder, all fixedly installed on the upper surface of the upper cover plate. Three of the soft landing hydraulic cylinders are evenly spaced along the circumference of the upper cover plate.

[0074] The underwater control ball valve can be the high-pressure underwater metal-sealed ball valve covered by announcement number CN207261714U or the deep-water integrated ROV single-operation multi-isolation valve covered by announcement number CN114251477A.

[0075] The hydraulic quick-connector is used to dock with the ROV hydraulic system via a Hot Stab with a hose and to provide hydraulic power.

[0076] The inner side of the protective cover is provided with at least two straightening blocks evenly spaced in the circumferential direction. Each straightening block has an arc-shaped block structure with the same curvature as the inner side of the protective cover. The inner side of each straightening block is used to fit and contact with the outer circumferential surface of the underwater control module.

[0077] The above-mentioned straightening blocks allow the cylindrical protective cover to fit and support the circumferential outer surface of the underwater control module, preventing relative swaying between the underwater control module and the protective cover during descent or retrieval. This avoids stress concentration or changes at the interface between the tool and the underwater control module, better ensuring the reliability of the connection between the tool and the underwater control module during descent and retrieval, and providing better protection.

[0078] During implementation, the underwater control module lowering and recovery tool also includes a soft landing positioning indicator structure, which includes a positioning indicator rod. The vertical positioning indicator rod is fixedly installed on the upper surface of the protective cover plate.

[0079] The upper cover plate has a vertical observation notch positioned directly opposite the seated position indicator rod, and the observation notch is for the seated position indicator rod to pass through.

[0080] When the distance between the upper cover plate and the protective cover plate is the closest, the position of the seated position indicator rod at the same height as the upper end surface of the upper cover plate and above it are indicator segments. The indicator segments and the seated position indicator rod below them have different color levels, and preferably the indicator segments are black.

[0081] The soft landing seat positioning indicator structure described above not only has the advantages of simple structure and easy accurate identification.

[0082] Meanwhile, by adopting the soft landing positioning indicator structure, the alignment of the upper end face of the upper cover with the positioning indicator rod can be used to accurately determine whether the upper cover is in the fully landing position, thus ensuring the accurate lowering and installation of the underwater control module.

[0083] The advantages of the underwater control module deployment and recovery tool described in this specific embodiment are:

[0084] 1. It can accurately and promptly determine the locking status of the locking mechanism, with reliable status indication to avoid misoperation.

[0085] In this technical solution, the locking status indicator rod is fixedly connected to the drive spindle at its lower end, so it can accurately rise and fall with the drive spindle, accurately displaying the position of the drive spindle (and the corresponding position of the lock block), and the rising and falling action is reliable. At the same time, the rising and falling of the upper end of the locking status indicator rod, combined with the indicator mark, can accurately and reliably indicate whether the lock block is in the locked or unlocked state, avoiding misoperation.

[0086] 2. The structure is ingeniously designed, resulting in low design and manufacturing costs.

[0087] The locking status indicator has a simple structure, and its lower end is easy to fix to the upper surface of the drive spindle; the indicator mark can be machined by milling or painted. Both the locking status indicator and the indicator mark are relatively easy to manufacture, have low implementation costs, and offer good performance.

[0088] The above are merely preferred embodiments of the present invention. It should be noted that any modifications and improvements made by those skilled in the art without departing from the present technical solution should also be considered to fall within the scope of protection claimed in this claim.

Claims

1. The underwater control module lowering and recovery tool includes, from top to bottom, an upper cover plate, a protective cover plate, and a protective cover; it also includes a soft landing mechanism, a hook mechanism, and a locking mechanism; The upper cover plate is connected to the annular protective cover plate through the soft landing mechanism, and a protective cover with an integral cylindrical structure is coaxially fixedly installed on the lower side of the protective cover plate. The hook mechanism is fixedly installed on the upper side of the upper cover plate; the locking mechanism is fixedly installed in the middle of the upper cover plate. The locking mechanism has a drive spindle that can be driven vertically inside. The drive spindle is used to push out the lock block or retract it, so that the lock block can be inserted into or removed from the annular lock groove inside the top interface of the underwater control module to achieve locking or unlocking. Its features are: It also includes a lock status indicator structure, which includes a lock status indicator rod and an indicator mark; The lower end of the locking status indicator rod is fixedly connected to the upper end face of the drive spindle, and the upper section of the locking status indicator rod passes through and protrudes from the top of the locking mechanism; The hook mechanism is fixed to the top outer upper surface of the locking mechanism. The indicator marks include a locking indicator mark and an unlocking indicator mark arranged sequentially from bottom to top in the height direction of the hook mechanism. When the upper end of the locking state indicator rod is at the same height as the locking indicator mark, the locking block is in the fully ejected locking block state; when the upper end of the locking state indicator rod is at the same height as the unlocking indicator mark, the locking block is in the fully retracted state. The ejection of the locking block can be limited by a stop provided on the radially inner side of the guide slot, and the retraction of the locking block can be limited by the circumferential outer side of the contraction section of the lower section of the drive spindle.

2. The underwater control module deployment and recovery tool according to claim 1, characterized in that: The locking mechanism includes a mounting cylinder, a crankshaft, a connecting rod, the drive spindle, and the locking block; The mounting cylinder is fixedly installed in the middle of the upper cover plate, and the mounting cylinder has an upper mounting section located in the upper space of the upper cover plate and a lower mounting section located in the lower space of the upper cover plate; the upper mounting section is provided with a crankshaft that extends radially and is rotatable, and one end of the crankshaft extends out of the outer side of the upper mounting section and constitutes a control part; The drive spindle is slidably inserted into the lower mounting section, and the top of the drive spindle is connected to the crankshaft by the connecting rod to form a crank-connecting rod mechanism. The locking block is inserted into the side wall of the lower section of the installation, and the radial inner side of the locking block and the radial outer side of the drive spindle have a mating surface that allows for ejection.

3. The underwater control module deployment and recovery tool according to claim 2, characterized in that: The hook mechanism includes a flange connecting plate, lifting lugs, and shackles; The flange connecting plate is fastened to the upper end face of the mounting cylinder by screws; the flange connecting plate is provided with a through hole for the upper section of the locking status indicator rod to pass through; The lifting lug, which is integrally shaped like a vertical block, is fixedly installed at the middle position of the outer upper end face of the flange connecting plate, and the shackle is installed at the top position of the lifting lug; The outer surface of the lug is provided with locking and unlocking indicators, each of which includes scale lines and character marks.

4. The underwater control module deployment and recovery tool according to claim 2, characterized in that: The crankshaft control section has an extension section that extends outward along the axial direction. The locking mechanism also includes a handle with an overall U-shaped structure, and the two ends of the open side of the U-shaped structure of the handle are fixedly connected to the extension of the crankshaft.

5. The underwater control module deployment and recovery tool according to claim 4, characterized in that: The locking mechanism also includes a handle limiting structure, and a limiting plate is fixedly installed on the upper surface of the upper cover plate; The limiting plate is used to block and limit the handle at 0 degrees or 180 degrees, so that the handle can rotate around the crankshaft within the range of 0 degrees to 180 degrees, and when the handle is at 0 degrees or 180 degrees, the locking block is in a fully ejected locking block state or a fully retracted locking block state.

6. The underwater control module lowering and recovery tool according to claim 5, characterized in that: The limiting plate is symmetrical about the vertical plane when the handle is at 90 degrees, and the outer side of the limiting plate away from the mounting cylinder is divided into a left area and a right area; one area of ​​the left area and the right area has an unlocking mark, and the other area has a locking mark.

7. The underwater control module lowering and recovery tool according to claim 4, characterized in that: The locking mechanism also includes a locking positioning pin, a insert, and a positioning baffle; The handle is fixedly mounted with the insert, and the locking positioning pin is slidably inserted into the insert. One end of the locking positioning pin can extend and retract into the insert to form a locking engagement end, and the other end of the locking positioning pin is fixedly mounted with a control handle. The centerline of the locking positioning pin is parallel to the centerline of the crankshaft; The positioning baffle is fixedly installed on the upper surface of the upper cover plate. The positioning baffle has a positioning hole that allows the locking end of the locking positioning pin to be inserted and limited. When the locking end of the locking positioning pin is aligned with the positioning hole, the locking block is in a fully ejected state.

8. The underwater control module deployment and recovery tool according to any one of claims 2 to 7, characterized in that: At least two locking blocks are evenly spaced along the circumference of the mounting cylinder. A limiting screw corresponding to each locking block is fixedly installed on the lower end face of the mounting cylinder. Each limiting screw is threaded into a corresponding threaded hole on the lower end face of the mounting cylinder, and the upper end of a single limiting screw is inserted into a guide slot on the lower side of a corresponding locking block. The length direction of the guide slot is consistent with the movement direction of the locking block.

9. The underwater control module lowering and recovery tool according to claim 1, characterized in that: It also includes a wire guide structure, which includes a clearance notch. Two vertically penetrating clearance notches are symmetrically arranged at the circumferential edge of the common circumference of the upper cover plate and the protective cover plate. At the radially outer end of each clearance notch, a wrapping protrusion is formed in the transverse circumferential direction. At the outer end of the transverse circumferential direction of the wrapping protrusion, a radially penetrating mounting hole is provided. Each clearance notch also has a threaded hole on its sidewall that is directly opposite the mounting hole, and a slotted screw is provided in the mounting hole and the threaded hole.

10. The underwater control module deployment and recovery tool according to claim 1, characterized in that: The inner side of the protective cover is provided with at least two straightening blocks evenly spaced in the circumferential direction. Each straightening block has an arc-shaped block structure with the same curvature as the inner side of the protective cover. The inner side of each straightening block is used to fit and contact with the outer circumferential surface of the underwater control module.

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