Circulating floating stepping ultra-deep water sunken ship salvage method

Abstract

A salvage device comprises a fixed buoyancy tank, an adjusting buoyancy tank, a hoisting truss and a sling, the fixed buoyancy tank is arranged at the top of the adjusting buoyancy tank, the hoisting truss is arranged at the bottom of the adjusting buoyancy tank, one end of the sling is connected with the hoisting truss, and the other end of the sling is connected with a sunken ship. The circulating floating stepping ultra-deep water sunken ship salvage method is suitable for deep water salvage, the salvage speed is controllable, the length of the sling is short, the key problem of deep water salvage is solved by adopting the salvage method, and the deep water salvage capacity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shipwreck salvage, and in particular to a cyclic floating stepping ultra-deepwater shipwreck salvage method. Background Art

[0002] The existing deep-water salvage requires the use of slings to dive underwater and connect to the sunken ship. When the sunken ship is in deeper water, the length of the slings needs to be longer. For deep-water salvage, the slings are longer and heavier, and the lifting performance requirements of the crane are higher, which seriously limits the salvage capacity of underwater sunken objects. Therefore, new methods must be considered to circumvent the problems of traditional methods. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a cyclic floating step-by-step ultra-deepwater shipwreck salvage method, which requires a short sling length and solves the problem of accelerated loss of control due to floating underwater relying on buoyancy.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a cyclic floating step-by-step ultra-deepwater shipwreck salvage device, including a fixed pontoon, an adjustable pontoon, a lifting truss and a sling, a fixed pontoon is arranged on the top of the adjustable pontoon, and a lifting truss is arranged on the bottom of the adjustable pontoon, one end of the sling is connected to the lifting truss, and the other end is connected to the sunken ship.

[0005] Preferably, there are a plurality of slings, which are arranged on both sides of the sunken ship, and the slings are connected to the sunken ship through lifting eye plates.

[0006] Preferably, a speed sensor is provided on the regulating buoy.

[0007] A method for salvaging a sunken ship in ultra-deep water by cyclic floating and stepping, comprising the following steps: (1) Assemble the underwater circulating floating step-in salvage device, then dive into the water, and the tugboat will lift the device above the sunken ship; (2) The salvage device lowers the lifting eye plate, and the underwater welding equipment welds the lifting eye plate to the outer surface of the sunken ship. One end of the sling is connected to the lifting eye plate, and the other end is connected to the lifting truss; (3) The buoyancy of the salvage device is adjusted by injecting ballast water into the fixed buoyancy tank so that the buoyancy is balanced with the weight of the sunken ship; (4) Adjust the buoyancy box to drain water outwards, increase the buoyancy and accelerate the buoyancy of the sunken ship salvage device from zero; (5) After accelerating for a certain distance, water is injected into the regulating float to reduce the buoyancy and decelerate the sunken ship salvage device to zero; (6) Each time the buoyancy of the regulating pontoon increases or decreases, the salvage device floats up a certain distance. The distance is calculated by obtaining information from the speed sensor to obtain the floating height of each cycle. The overall stability of the system is ensured by controlling the maximum floating speed. (7) When in deep sea, the buoyancy of the buoyancy chamber changes greatly, while when close to the water surface, the buoyancy of the buoyancy chamber changes less; (8) When the salvage device floats to the surface, it is loaded onto a ship using a semi-submersible vessel or floating crane and transported to shore for processing.

[0008] By adopting the technical solution of the present invention, the following beneficial effects can be obtained: The cyclic floating step-by-step ultra-deepwater shipwreck salvage method of the present invention is suitable for deepwater salvage, the salvage speed is controllable, and the length of the sling is relatively short. The salvage method solves the key problems of deepwater salvage and improves the deepwater salvage capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The following is a brief description of the contents and symbols in the drawings of this specification: Figure 1 This is a schematic diagram of the structure of the shipwreck salvage device; The markings in the above figures are: 1. Fixed pontoon; 2. Adjustable pontoon; 3. Lifting truss; 4. Lifting rope; 5. Lifting eye plate; 6. Sunken ship. DETAILED DESCRIPTION

[0010] The following is a detailed description of the embodiments of the present invention, such as the shapes and structures of the components involved, the relative positions and connection relationships between the components, the functions and working principles of the components, etc., with reference to the accompanying drawings.

[0011] like Figure 1 As shown, the cyclic floating step-by-step ultra-deepwater shipwreck salvage device includes a fixed pontoon 1, an adjustable pontoon 2, a hoisting truss 3 and a sling 4. The fixed pontoon 1 is arranged on the top of the adjustable pontoon 2, and the hoisting truss 3 is arranged on the bottom of the adjustable pontoon 2. One end of the sling 4 is connected to the hoisting truss 3, and the other end is connected to the sunken ship 6. There are multiple slings, which are arranged on both sides of the sunken ship. The sling 4 is connected to the sunken ship 6 through a hoisting eye plate 5, and a speed sensor is arranged on the adjustable pontoon 2.

[0012] The present circular floating step-by-step ultra-deepwater shipwreck salvage method comprises the following steps: (1) Assemble the underwater circulating floating stepping salvage device, then dive into the water, and the tugboat lifts the device above the sunken ship 6; (2) The salvaging device lowers the lifting eye plate 5, and the underwater welding equipment welds the lifting eye plate 5 to the outer surface of the sunken ship 6, and connects one end of the sling 4 to the lifting eye plate 5 and the other end to the lifting truss 3; (3) adjusting the buoyancy of the salvage device by injecting ballast water into the fixed buoyancy tank 1 so that the buoyancy is balanced with the weight of the sunken ship 6; (4) Adjust the buoyancy box 2 to drain water outwards, increase the buoyancy and accelerate the buoyancy of the sunken ship salvage device from zero; (5) After accelerating for a certain distance, water is injected into the regulating buoyancy box 2 to reduce the buoyancy and decelerate the sunken ship salvage device to zero; (6) Each time the buoyancy of the buoyancy chamber 2 is increased or decreased, the salvage device floats up a certain distance. The distance is calculated by obtaining information from the speed sensor to obtain the floating height of each cycle. The overall stability of the system is ensured by controlling the maximum floating speed. (7) When in the deep sea, the buoyancy change of the regulating buoyancy box 2 is large, and when close to the water surface, the buoyancy change of the buoyancy box is small (the buoyancy change refers to the buoyancy change adjusted by the amount of water injected into and removed from the regulating buoyancy box 2, and the buoyancy change ΔF=F2-F1, where F1 is the pressure on the upper surface of the object and F2 is the pressure on the lower surface of the object); (8) When the salvage device floats to the surface, it is loaded onto a ship using a semi-submersible vessel or floating crane and transported to shore for processing.

[0013] The cycle-floating step-by-step ultra-deepwater shipwreck salvage method is suitable for deepwater salvage, the salvage speed is controllable, and the length of the sling is relatively short. The use of this salvage method solves the key problems of deepwater salvage and improves the deepwater salvage capability.

[0014] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A cyclic floating step-by-step ultra-deepwater shipwreck salvage device, characterized in that: The utility model comprises a fixed pontoon, an adjustable pontoon, a hoisting truss and a sling. The fixed pontoon is arranged on the top of the adjustable pontoon, the hoisting truss is arranged on the bottom of the adjustable pontoon, one end of the sling is connected with the hoisting truss, and the other end is connected with the sunken ship.

2. The cyclic floating step-by-step ultra-deepwater shipwreck salvage device according to claim 1 is characterized in that: There are multiple slings, which are arranged on both sides of the sunken ship. The slings are connected to the sunken ship through lifting eye plates.

3. The cyclic floating step-by-step ultra-deepwater shipwreck salvage device according to claim 1 is characterized by: A speed sensor is arranged on the regulating buoy.

4. A method for salvaging a sunken ship in ultra-deep water by cyclic floating and stepping, characterized in that: The following steps are involved: (1) Assemble the underwater circulating floating step-in salvage device, then dive into the water, and the tugboat will lift the device above the sunken ship; (2) The salvage device lowers the lifting eye plate, and the underwater welding equipment welds the lifting eye plate to the outer surface of the sunken ship. One end of the sling is connected to the lifting eye plate, and the other end is connected to the lifting truss; (3) The buoyancy of the salvage device is adjusted by injecting ballast water into the fixed buoyancy tank so that the buoyancy is balanced with the weight of the sunken ship; (4) Adjust the buoyancy box to drain water outwards, increase the buoyancy and accelerate the buoyancy of the sunken ship salvage device from zero; (5) After accelerating for a certain distance, water is injected into the regulating float to reduce the buoyancy and decelerate the sunken ship salvage device to zero; (6) Each time the buoyancy of the regulating pontoon increases or decreases, the salvage device floats up a certain distance. The distance is calculated by obtaining information from the speed sensor to obtain the floating height of each cycle. The overall stability of the system is ensured by controlling the maximum floating speed. (7) When in deep sea, the buoyancy of the buoyancy chamber changes greatly, while when close to the water surface, the buoyancy of the buoyancy chamber changes less; (8) When the salvage device floats to the surface, it is loaded onto a ship using a semi-submersible vessel or floating crane and transported to shore for processing.

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