An underwater auxiliary recovery device and its usage method

Abstract

The present invention discloses an underwater auxiliary recovery device, comprising: a main floating body assembly, a top floating body, a cable, a releaser, and a coiling cylinder for coiling the cable. The coiling cylinder is arranged on the main floating body assembly. One end of the cable is connected to the main floating body assembly, and the other end of the cable is also connected to the main floating body assembly. One end of the releaser is connected to the top floating body, and the other end of the releaser is also connected to the top floating body. The present invention also discloses a using method of the underwater auxiliary recovery device as described above. The present invention aims to solve the technical problem that when the underwater equipment is recovered by the method of jettison recovery in the prior art, the cable systems are easily interfered with each other under the influence of ocean currents, resulting in entanglement and knotting, which affects and damages the entire system.

Description

Technical Field

[0001] The present invention belongs to the technical field of underwater equipment recovery, and particularly relates to an underwater auxiliary recovery device and a method for using the same. Background Art

[0002] With the development of marine underwater resources, more and more underwater equipment systems are placed underwater for a long time; due to the complexity of the marine underwater environment, underwater equipment needs to be recovered and maintained. The underwater equipment system includes a multi-point mooring underwater equipment system, which has a relatively complex structure, including: a plurality of instruments connected by cables, a floating body and a heavy block respectively connected to the instruments, a releaser is provided between the instrument and the heavy block, and is remotely controlled by a deck control unit. When the multi-point mooring underwater equipment system is working normally underwater, the plurality of instruments are in fixed positions under the action of the heavy block.

[0003] When recovery and maintenance are required, the existing technology adopts the method of throwing load for recovery. That is: remotely control the releaser to release through the deck control unit, the heavy block is separated from the instrument, the heavy block load is discarded, and under the buoyancy of the floating body, the multi-point mooring underwater equipment system except the heavy block floats freely, and is salvaged by a salvage ship after floating.

[0004] The deficiencies of the existing technology are: when recovering by throwing load, the multi-point mooring underwater equipment system will be affected by ocean currents, and the cables are prone to interfere with each other during floating, causing entanglement and knotting, thus affecting and damaging the entire system. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] Based on this, the present invention proposes an underwater auxiliary recovery device and a method for using the same, which aims to solve the technical problem that when recovering underwater equipment by adopting the method of throwing load in the existing technology, the cables are affected by ocean currents, are prone to interfere with each other, cause entanglement and knotting, and affect and damage the entire system.

[0007] (II) Technical Solutions

[0008] To solve the above technical problems, the present invention proposes an underwater auxiliary recovery device, including: a main floating body assembly, a top floating body, a cable, a releaser and a coiling cylinder for coiling the cable, the coiling cylinder is arranged on the main floating body assembly, one end of the cable is connected to the main floating body assembly, the other end of the cable is connected to the main floating body assembly, one end of the releaser is connected to the top floating body, the other end of the releaser is connected to the top floating body; the underwater auxiliary recovery device has a first state, when the underwater auxiliary recovery device is in the first state, the cable is coiled around the coiling cylinder and the lower end surface of the top floating body abuts against the upper end surface of the coiling cylinder.

[0009] Preferably, the main floating body assembly includes: a main skeleton and a main floating body. The main skeleton includes: an upper clamping plate, a lower clamping plate, and a connecting plate. The connecting plate penetrates through the main floating body and connects the upper clamping plate and the lower clamping plate respectively. The upper clamping plate and the lower clamping plate clamp the upper and lower end faces of the main floating body respectively; a lower ear plate is provided on one side of the lower clamping plate away from the upper clamping plate.

[0010] Preferably, the coiling cylinder includes: a cylinder body and a connecting disk provided at the lower part of the cylinder body. The upper clamping plate is of a hollow structure, and the connecting disk is threadedly connected to the upper clamping plate.

[0011] Preferably, the whole cylinder body is in the shape of a hollow frustum of a cone with a smaller upper part and a larger lower part, and the releaser is arranged inside the cylinder body.

[0012] Preferably, the underwater auxiliary recovery device further includes a first release buckle. An upper ear plate is further provided on one side of the upper clamping plate away from the lower clamping plate, and the upper ear plate is connected to the lower part of the releaser through the first release buckle.

[0013] Preferably, the underwater auxiliary recovery device further includes a second release buckle connected to the lower part of the top floating body. The top floating body is connected to the upper part of the releaser through the second release buckle.

[0014] Preferably, a beacon and a lifting lug are provided on the upper part of the top floating body.

[0015] Preferably, the releaser is an acoustic releaser or an electromagnetic releaser.

[0016] Preferably, the underwater auxiliary recovery device further includes a deck control unit for remotely controlling the release of the releaser.

[0017] The present invention also proposes a usage method of the underwater auxiliary recovery device as described above. The underwater auxiliary recovery device is used for auxiliary recovery of underwater equipment. The usage method of the underwater auxiliary recovery device includes the following contents:

[0018] When it is necessary to stabilize the attitude of the underwater equipment: connect the underwater equipment to the lower part of the main floating body assembly. The underwater auxiliary recovery device is in the first state. Connect a weight to the lower part of the underwater equipment. The main floating body assembly and the top floating body provide buoyancy, and the weight provides gravity. The main floating body assembly, the top floating body and the weight jointly stabilize the attitude of the underwater auxiliary recovery device;

[0019] When it is necessary to recover the underwater equipment, after controlling the releaser to release, the top floating body floats up together with the cable until it emerges from the water surface to achieve auxiliary recovery.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the beneficial effects of the underwater auxiliary recovery device and its usage method of the present invention mainly include:

[0022] Compared with the prior art, the usage method of an underwater auxiliary recovery device of the present invention can cooperate with a heavy block to stabilize the attitude of underwater equipment and can also assist a salvage ship to recover underwater equipment. By using the underwater auxiliary recovery device of the present invention, a complex underwater equipment system can be assisted in recovery, effectively avoiding problems such as entanglement and knotting caused by mutual interference of cable systems, and protecting the multi-point mooring underwater equipment system from being damaged during the recovery process. Moreover, after the recovery and maintenance are completed, the underwater auxiliary recovery device of the present invention can be put into use again, which is convenient and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings. The drawings are schematic and should not be construed as imposing any limitation on the present invention. In the drawings:

[0024] Figure 1 is a schematic diagram of the overall structure of an underwater auxiliary recovery device of the present invention;

[0025] Figure 2 is a schematic diagram of an underwater auxiliary recovery device of the present invention in a first state;

[0026] Figure 3 is a schematic diagram of an underwater auxiliary recovery device of the present invention in a second state (after the releaser is released);

[0027] Figure 4 is a schematic diagram of the structure of the main skeleton in an underwater auxiliary recovery device of the present invention;

[0028] Figure 5 is a schematic diagram of the structure of the coiling cylinder in an underwater auxiliary recovery device of the present invention.

[0029] Description of the reference numerals in the drawings:

[0030] 1. Main floating body assembly, 2. Top floating body, 3. Cable, 4. Releaser, 5. Coiling cylinder, 6. First release buckle, 7. Second release buckle, 8. Beacon, 9. Lifting lug, 10. Deck control unit, 11. Main skeleton, 12. Main floating body, 51. Cylinder body, 52. Connecting plate, 111. Upper clamping plate, 112. Lower clamping plate, 113. Connecting plate, 114. Lower ear plate, 115. Upper ear plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two components, or a "transmission connection", that is, power connection is carried out in various suitable ways such as belt drive, gear drive, or sprocket drive. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The following is a further description of the present invention in conjunction with the attached Figures 1-5 drawings.

[0034] Please refer specifically to Figures 1-3 , an underwater auxiliary recovery device, including: a main floating body assembly 1, a top floating body 2, a cable 3, a releaser 4, and a coiling drum 5 for coiling the cable 3. The coiling drum 5 is arranged on the main floating body assembly 1. One end of the cable 3 is connected to the main floating body assembly 1, and the other end of the cable 3 is connected to the top floating body 2. One end of the releaser 4 is connected to the main floating body assembly 1, and the other end of the releaser 4 is connected to the top floating body 2.

[0035] When the underwater auxiliary recovery device of the present invention is in use, an underwater equipment system is connected to the lower part of the main floating body assembly 1. The underwater equipment can have various structures. Here, taking a multi-point mooring underwater equipment system as an example, the multi-point mooring underwater equipment system includes: a plurality of instruments connected by cables, and weights connected to the instruments. Under the action of the weights, the instruments are in a fixed state underwater.

[0036] In the underwater auxiliary recovery device of the present invention, the main floating body assembly 1 floats at a certain depth, providing the main buoyancy to stabilize the attitude of the underwater auxiliary recovery device. The cable 3 is coiled around the coiling drum 5. During specific implementation, the size of the coiling drum 5 can be adjusted according to the depth that the top floating body 2 needs to float. The releaser 4 is connected to the top floating body 2, and the lower end face of the top floating body 2 abuts against the upper end face of the coiling drum 5. The lower end face of the top floating body 2 restricts the cable 3 on the coiling drum 5 to prevent the cable 3 from loosening, thereby realizing the fixation of the cable 3. The above state is Figure 2 the first state shown in the figure, and the releaser 4 is in a non-releasing state.

[0037] A method for using an underwater auxiliary recovery device according to the present invention, the underwater auxiliary recovery device is used for auxiliary recovery of underwater equipment, and the method for using the underwater auxiliary recovery device includes the following: When it is necessary to stabilize the attitude of the underwater equipment: Connect the underwater equipment to the lower part of the main floating body assembly 1, the underwater auxiliary recovery device is in the first state, connect a weight to the lower part of the underwater equipment, the main floating body assembly 1 and the top floating body provide buoyancy, the weight provides gravity, and the main floating body assembly 1, the top floating body 2 and the weight jointly stabilize the attitude of the underwater auxiliary recovery device. When it is necessary to recover the underwater equipment, after the controller 4 is controlled to release, the top floating body 2 floats up with the cable 3 until it emerges from the water surface to achieve auxiliary recovery. Specifically as follows:

[0038] When it is necessary to recover and maintain a multi-point mooring underwater equipment system, after the controller 4 is controlled to release, the top floating body 2 will float up with the cable 3 until it emerges from the water surface to achieve the purpose of auxiliary recovery. This state is Figure 3 the second state shown. In this state, the salvage ship can hook the top of the top floating body 2 and then salvage and recover the subsequent equipment. During the salvage process, the main floating body assembly 1 and the weight respectively tension the instrument from the upper and lower directions, and the cable systems between multiple instruments are all in a stable tensioned attitude. The cable systems can effectively resist the influence of ocean currents and avoid problems such as entanglement and knotting caused by mutual interference of the cable systems, protecting the multi-point mooring underwater equipment system from being damaged during the recovery process.

[0039] According to a specific embodiment of the present invention, a beacon 8 and a lifting lug 9 are provided on the upper part of the top floating body 2. In this embodiment, the top floating body 2 can be positioned through the beacon 8, which is beneficial for the salvage operation personnel to quickly obtain the position of the underwater auxiliary recovery device. The salvage ship hooks the upper lifting lug 9 of the floating body, which is convenient for salvage.

[0040] According to a specific embodiment of the present invention, the underwater auxiliary recovery device further includes a deck control unit 10 for remotely controlling the release of the controller 4. By remotely controlling the release of the controller 4 through the deck control unit 10, the convenience of control can be improved.

[0041] Please refer to Figure 4 , according to a specific embodiment of the present invention, the main floating body assembly 1 includes: a main skeleton 11 and a main floating body 12, the main skeleton 11 includes: an upper clamping plate 111, a lower clamping plate 112 and a connecting plate 113, the connecting plate 113 penetrates through the main floating body 12 and is respectively connected to the upper clamping plate 111 and the lower clamping plate 112, and the upper clamping plate 111 and the lower clamping plate 112 respectively clamp the upper and lower end faces of the main floating body 12; a lower ear plate 114 is provided on the side of the lower clamping plate 112 away from the upper clamping plate 111. In this embodiment, the main floating body 12 can be effectively fixed through this structure, and the lower ear plate 114 is used to connect to the underwater equipment.

[0042] Please refer to with emphasis Figure 5 According to the specific embodiments of the present invention, the coiling cylinder 5 includes: a cylinder body 51 and a connecting disk 52 provided at the lower part of the cylinder body 51. The upper clamping plate 111 has a hollow structure, and the connecting disk 52 is threadedly connected to the upper clamping plate 111. Specifically, when implemented, a plurality of bolt holes are provided around the connecting disk 52, which correspond one by one to the bolt holes on the upper clamping plate 111, and the coiling cylinder 5 is fixed to the main framework 11 through bolt connection. In this embodiment, the hollow structure of the upper clamping plate 111 is used to accommodate the threaded connecting piece, so as to avoid the threaded connecting piece passing through the upper clamping plate 111 and interfering with the main floating body 12. It should be noted that when winding the cable 3, one end of the cable 3 is wound and fixed on the main framework 11, from the bottom of the coiling cylinder 5 from bottom to top, from inside to outside, and is wound around the cylinder body 51 of the coiling cylinder 5 in circles one by one, and finally the other end is connected and fixed to the lower ear plate of the top floating body 2. This structure is conducive to the release of the cable 3.

[0043] According to the specific embodiments of the present invention, the cylinder body 51 is integrally in the shape of a hollow truncated cone with a smaller upper part and a larger lower part, and the releaser 4 is arranged inside the cylinder body 51. In this embodiment, the cylinder body 51 is integrally in the shape of a truncated cone with a smaller upper part and a larger lower part, which is conducive to the cable 3 wound around the coiling cylinder 5 being easily released after the top floating body 2 is released. The hollow structure of the cylinder body 51 is used to install the releaser 4, and by placing the releaser 4 at the central position of the cylinder body 51, it can ensure that the pulling force of the releaser 4 on the top floating body 2 is located on the axis of the cylinder body 51, improving the stability of the force.

[0044] According to the specific embodiments of the present invention, the underwater auxiliary recovery device further includes a first release buckle 6. An upper ear plate 115 is further provided on one side of the upper clamping plate 111 away from the lower clamping plate 112, and the upper ear plate 115 is connected to the lower part of the releaser 4 through the first release buckle 6. The underwater auxiliary recovery device further includes a second release buckle 7 connected to the lower part of the top floating body 2, and the top floating body 2 is connected to the upper part of the releaser 4 through the second release buckle 7. In this embodiment, by connecting the two ends of the releaser 4 through the first release buckle 6 and the second release buckle 7 respectively, it is conducive to installation and disassembly.

[0045] According to the specific embodiments of the present invention, the releaser 4 is an acoustic releaser or an electromagnetic releaser.

[0046] Compared with the prior art, the use method of an underwater auxiliary recovery device of the present invention can cooperate with a heavy block to stabilize the attitude of underwater equipment, and can also assist a salvage ship to recover underwater equipment. By using the underwater auxiliary recovery device of the present invention, a complex underwater equipment system can be assisted in recovery, effectively avoiding problems such as entanglement and knotting caused by mutual interference of cable systems, and protecting the multi-point mooring underwater equipment system from being damaged during the recovery process. And after the recovery and maintenance, the underwater auxiliary recovery device of the present invention can be put into use again, which is convenient and reliable.

[0047] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. An underwater auxiliary recovery device, characterized in that, it includes: a main floating body assembly, a top floating body, a cable, a releaser, and a coiling cylinder for coiling the cable. The coiling cylinder is arranged on the main floating body assembly. One end of the cable is connected to the main floating body assembly, and the other end of the cable is connected to the top floating body. One end of the releaser is connected to the main floating body assembly, and the other end of the releaser is connected to the top floating body. The underwater auxiliary recovery device has a first state. When the underwater auxiliary recovery device is in the first state, the cable is coiled around the coiling cylinder and the lower end face of the top floating body abuts against the upper end face of the coiling cylinder. The whole body of the coiling cylinder is in the shape of a hollow truncated cone with a smaller upper part and a larger lower part, and the releaser is arranged inside the cylinder. The lower part of the main floating body assembly is connected to an underwater equipment system, and the underwater equipment system includes a plurality of instruments connected by a cable system and a weight connected to the instrument.

2. The underwater auxiliary recovery device according to claim 1, characterized in that, the main floating body assembly includes: a main skeleton and a main floating body. The main skeleton includes: an upper clamping plate, a lower clamping plate, and a connecting plate. The connecting plate penetrates through the main floating body and connects the upper clamping plate and the lower clamping plate respectively. The upper clamping plate and the lower clamping plate clamp the upper and lower end faces of the main floating body respectively. A lower ear plate is arranged on one side of the lower clamping plate away from the upper clamping plate.

3. The underwater auxiliary recovery device according to claim 2, characterized in that, the coiling cylinder includes a connecting plate arranged at the lower part of the cylinder body. The upper clamping plate is a hollow structure, and the connecting plate is threadedly connected to the upper clamping plate.

4. The underwater auxiliary recovery device according to claim 3, characterized in that, the underwater auxiliary recovery device further includes a first release buckle. An upper ear plate is further arranged on one side of the upper clamping plate away from the lower clamping plate, and the upper ear plate is connected to the lower part of the releaser through the first release buckle.

5. The underwater auxiliary recovery device according to claim 1, characterized in that, the underwater auxiliary recovery device further includes a second release buckle connected to the lower part of the top floating body. The top floating body is connected to the upper part of the releaser through the second release buckle.

6. The underwater auxiliary recovery device according to claim 1, characterized in that, a beacon and a lifting lug are arranged on the upper part of the top floating body.

7. The underwater auxiliary recovery device according to claim 1, characterized in that, the releaser is an acoustic releaser or an electromagnetic releaser.

8. The underwater auxiliary recovery device according to claim 1, characterized in that, the underwater auxiliary recovery device further includes a deck control unit for remotely controlling the release of the releaser.

9. A method for using the underwater auxiliary recovery device according to any one of claims 1-8, characterized in that, the underwater auxiliary recovery device is used for assisting in the recovery of underwater equipment, and the method for using the underwater auxiliary recovery device includes the following contents: When it is necessary to stabilize the attitude of the underwater device: Connect the underwater device to the lower part of the main floating body assembly. The underwater auxiliary recovery device is in the first state. Connect a weight to the lower part of the underwater device. The main floating body assembly and the top floating body provide buoyancy, and the weight provides gravity. The main floating body assembly, the top floating body and the weight jointly stabilize the attitude of the underwater auxiliary recovery device; When it is necessary to recover the underwater device, after controlling the releaser to release, the top floating body floats up with the cable until it emerges from the water surface to achieve auxiliary recovery.

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