A bottom-sitting self-elevating multifunctional salvage engineering vessel

Abstract

The present invention discloses a bottom-sitting self-elevating multifunctional salvage engineering ship, which belongs to the technical field of salvage engineering equipment, and includes an upper working platform, pile legs and a pile foundation box. The pile legs are provided with a plurality of pile legs, one end of which is connected to the pile foundation box, and the other end is inserted into the upper working platform. The pile legs are driven to rise and fall by a lifter arranged in the upper working platform, and two pile legs are arranged on each pile foundation box. A plurality of pile foundation boxes arranged in parallel are arranged on the upper working platform, and a living building and a lifting device are arranged on the top of the upper working platform. When working, the pile foundation box sinks to the seabed and is below the water surface, and the upper hull is lifted up by the pile legs to leave the water surface to form a sufficient air gap, so that the buoyancy of the whole ship remains basically unchanged under large swell sea conditions, and the force of the current acting on the smaller pile foundation box is also smaller, thereby greatly reducing the influence of the marine environment on the working platform structure, and ensuring the operation capacity of the working platform in relatively severe sea conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of salvage engineering equipment, and in particular to a bottom-sitting self-elevating multifunctional salvage engineering vessel. Background Art

[0002] Traditional engineering vessels, when operating in open waters, are greatly affected by large swells due to the shallow water effect, and their operations are greatly restricted; traditional pile-driving vessels are prone to the risk of pile shoes sliding or getting stuck in uneven hard bottoms; traditional semi-submersible platforms have certain difficulties in entering shallow water areas due to their deep draft; traditional bottom-sitting vessels, with their entire bottom sitting on the seabed, have high requirements for the flatness and bottom quality of the seabed. They are more suitable for soft mud bottoms, but have great limitations on the use of uneven bottoms such as hard mud or reef bottoms; in seas with large swells, the force on the hull varies greatly, which can easily lead to overload damage to the hull structure, and therefore are limited to applicable sea conditions.

[0003] The salvage industry has a variety of construction areas. For salvage operations of stranded ships in shallow water, the bottom is often hard, and the operating vessels are often affected by shallow draft and large waves. The operating window using traditional ships or platforms is very limited and cannot meet normal construction needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a bottom-sitting self-elevating multifunctional salvage engineering vessel, which is suitable for salvage operations in various sea areas.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a bottom-sitting self-elevating multifunctional salvage engineering vessel, including an upper working platform, pile legs and a pile foundation box, wherein the pile legs are provided with multiple legs, one end of the pile legs is connected to the pile foundation box, and the other end is inserted into the upper working platform, and the pile legs are driven to rise and fall by a lift arranged in the upper working platform, and each pile foundation box is provided with two pile legs. A plurality of parallel pile foundation boxes are arranged on the upper working platform, and a accommodating groove is arranged at the bottom of the upper working platform. The shape of the accommodating groove matches the pile foundation box, and the pile foundation box can be retracted into the accommodating groove of the upper working platform. A living building and lifting equipment are arranged on the top of the upper working platform.

[0006] Preferably, the pile foundation box is connected to the pile legs via a ball joint.

[0007] Preferably, the pile foundation box is composed of a plurality of separated watertight ballast compartments, and high-pressure air pipes are arranged in the watertight ballast compartments.

[0008] Preferably, a plurality of water spray outlets are arranged at the bottom of the pile foundation box.

[0009] Preferably, a rubber pad is provided at the bottom of the pile foundation box.

[0010] Preferably, a telescopic connecting rod is provided on the side of the pile foundation box, and the end of the telescopic connecting rod is connected to the adjacent pile foundation box through a ball joint.

[0011] A method for using a bottom-sitting self-elevating multifunctional salvage engineering vessel comprises the following steps:

[0012] (1) When the salvage ship is sailing, the pile foundation box is retracted and embedded into the upper working platform to form a complete hull;

[0013] (2) The salvage engineering vessel selects suitable sea conditions to enter the shallow water construction area. Its built-in dynamic positioning system can assist the vessel in getting into position and preparing to lower it to the bottom;

[0014] (3) When the pile is seated on the bottom, the elevator lowers the pile legs, the upper working platform is separated from the pile foundation box, the pile foundation box sits on the seabed, and the upper working platform is lifted up above the water surface to form a sufficient air gap;

[0015] (4) In order to cope with the uneven geology underwater, the connection between the pile foundation box and the pile legs adopts a ball joint. The pile foundation box can be deflected to a certain extent according to the seabed conditions to adapt to the seabed terrain. A ball joint is used between the pile foundation box and the pile legs. The length of the pile legs can be adjusted according to the posture of the pile foundation box until the upper working platform is level;

[0016] (5) When the water depths of the lower buoys are inconsistent, the retractable connecting rod 6 is adjusted to connect the pile foundation boxes 3 together to form a whole, thereby increasing the stability of the bottoming;

[0017] (6) When the engineering ship is evacuated, the high-pressure water jets installed at the bottom of the pile foundation box spray water downward to reduce the adsorption force of the silt, and then the elevator is started to retract the pile legs. The pile foundation box is folded up and embedded into the upper working platform to form a complete hull, and the engineering ship sails to the next working sea area.

[0018] By adopting the technical solution of the present invention, the following beneficial effects can be obtained:

[0019] The bottom-sitting self-elevating multifunctional salvage engineering vessel of the present invention can maintain a relatively small draft in a floating state, can navigate shallow water construction areas by itself, and can be dynamically positioned to the designed bottom-sitting position. After being seated on the hard seabed, the lower multi-pile foundation box of the engineering vessel can maintain a larger contact area with the seabed compared to traditional self-elevating platforms; compared to traditional fully bottom-sitting ships, the lower multi-pile foundation box reduces the engineering vessel's requirements for the overall flatness of the seabed. During operation, the lower multi-pile foundation box sinks to the seabed below the water surface, and the upper hull is lifted off the water surface by the pile legs to form a sufficient air gap, so that the buoyancy of the entire ship remains basically unchanged under large swell sea conditions, and the force of the current acting on the smaller pile foundation box is also smaller, thereby greatly reducing the impact of the marine environment on the structure of the working platform, and ensuring the operating capacity of the working platform in relatively severe sea conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following is a brief description of the contents and symbols in the drawings of this specification:

[0021] Figure 1 This is a schematic diagram of the self-elevating salvage engineering vessel sitting on the bottom with the pile foundation box arranged horizontally;

[0022] Figure 2 It is a schematic diagram of the navigation state of a self-elevating salvage engineering vessel with the pile foundation box arranged transversely;

[0023] Figure 3 It is a schematic diagram of the self-elevating salvage engineering vessel arranged transversely with the pile foundation box;

[0024] Figure 4 This is a schematic diagram of the self-elevating salvage engineering vessel sitting on the bottom with the pile foundation box arranged longitudinally;

[0025] Figure 5 It is a schematic diagram of the navigation state of a self-elevating salvage engineering vessel arranged longitudinally with the pile foundation box;

[0026] Figure 6 This is a schematic diagram of the self-elevating salvage engineering vessel arranged longitudinally with the pile foundation box.

[0027] The markings in the above figures are: 1. Upper working platform; 2. Pile legs; 3. Pile foundation box; 4. Living building; 5. Lifting equipment; 6. Retractable connecting rod; 7. Accommodation groove. DETAILED DESCRIPTION

[0028] 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.

[0029] like Figure 1 , 2As shown in Figure 3, the bottom-sitting self-elevating multifunctional salvage engineering vessel comprises an upper working platform 1, pile legs 2 and a pile foundation box 3. The pile legs 2 are provided with multiple legs, one end of the pile legs 2 is connected to the pile foundation box 3, and the other end is inserted into the upper working platform 1. The pile legs 2 are driven to rise and fall by a lift arranged in the upper working platform 1. Each pile foundation box 3 is provided with two pile legs 2. A plurality of parallel pile foundation boxes 3 are arranged on the upper working platform 1. A receiving groove 7 is arranged at the bottom of the upper working platform 1. The shape of the receiving groove 7 matches the pile foundation box 3. The pile foundation box 3 can be retracted into the receiving groove 7 of the upper working platform 1. A living building 4 and a lifting equipment 5 are arranged on the top of the upper working platform 1. The pile foundation box 3 is connected to the pile leg 2 through a ball joint. The pile foundation box 3 is composed of a plurality of watertight ballast tanks separated by a plurality of spacers. A high-pressure air pipeline is arranged in the watertight ballast tank. A plurality of water spray nozzles are arranged at the bottom of the pile foundation box 3. A rubber pad is arranged at the bottom of the pile foundation box 3. A retractable connecting rod 6 is arranged on the side of the pile foundation box 3. The end of the retractable connecting rod 6 is connected to the adjacent pile foundation box 3 through a ball joint. When the pile foundation box 3 sits down to different depths, the retractable connecting rod 6 is extended to make the entire working platform more stable. The retractable connecting rod 6 is connected to the adjacent pile foundation box 3 through a ball joint. The ball joint can be offset by a certain angle so that adjacent pile foundation boxes 3 at different depths are connected together through the retractable connecting rod 6, making the entire platform more stable.

[0030] The method for using the bottom-sitting self-elevating multifunctional salvage engineering vessel comprises the following steps:

[0031] (1) If Figure 2 As shown, when the salvage ship is sailing, the pile foundation box 3 is retracted and embedded into the upper working platform to form a complete hull;

[0032] (2) The salvage engineering vessel selects suitable sea conditions to enter the shallow water construction area. Its built-in dynamic positioning system can assist the vessel in getting into position and preparing to lower it to the bottom;

[0033] (3) If Figure 1 As shown, when the pile is bottomed, the lift lowers the pile legs 2, the upper working platform 1 is separated from the pile foundation box 3, the pile foundation box 3 sits on the seabed, and the upper working platform 1 is lifted up out of the water to form a sufficient air gap;

[0034] (4) In order to cope with the uneven geology underwater, the connection between the pile foundation box 3 and the pile leg 2 adopts a ball joint. The pile foundation box 3 can be deflected to a certain extent according to the seabed conditions to adapt to the seabed terrain. A ball joint is used between the pile foundation box 3 and the pile leg 2. The length of the pile leg 2 can be adjusted according to the posture of the pile foundation box 3 until the upper working platform 1 is level;

[0035] (5) If Figure 3As shown, a telescopic connecting rod 6 is arranged on the side of the pile foundation box 3, and the end of the telescopic connecting rod 6 is connected to the adjacent pile foundation box 3 through a ball joint. When the telescopic connecting rod 6 is extended, it is connected to the adjacent pile foundation box 3 through the ball joint, and when it is retracted, it is retracted into the pile foundation box 3. When the water depth of each lower floating body is inconsistent, the telescopic adjusting connecting rod 6 connects each pile foundation box 3 together to form a whole, thereby increasing the stability of the bottom seat;

[0036] (6) When the engineering ship is evacuated, the high-pressure water jets installed at the bottom of the pile foundation box spray water downward to reduce the adsorption force of the silt, and then the elevator is started to retract the pile legs. The pile foundation box is folded up and embedded into the upper working platform to form a complete hull, and the engineering ship sails to the next working sea area.

[0037] like Figure 1 As shown, the upper working platform 1 is connected to the pile legs 2 through a lifting system, and the pile foundation box 3 is connected to the pile legs 2 through a ball joint.

[0038] When sailing, the pile foundation box 3 can be folded up and embedded into the upper working platform 1 to form a complete hull; when sitting on the bottom, the lifting system lowers the pile legs 2, the upper working platform 1 is disengaged from the lower multi-pile pile foundation box 3, the lower multi-pile pile foundation box 3 sits on the seabed, and the upper working platform 1 is lifted out of the water to form a sufficient air gap.

[0039] Various pipelines (water pipes, air pipes, etc.) are arranged in the pile legs 2, and are connected to the upper working platform 1 through hoses after the upper working platform 1 is lifted into place.

[0040] The pile foundation box 3 is a multi-piece box embedded in the upper hull. The pile foundation box 3 is a small, deep (no more than 3 meters), reinforced box-shaped structure, which can adapt to a variety of hard bottoms such as hard soil and reefs. A water spray port and a rubber pad are designed under the pile foundation box 3. The water spray port can spray water when the pile foundation box 3 is separated from the mud bottom to reduce the influence of the adsorption force; the rubber pad can relieve the stress of the bottom of the ship and increase the friction between the lower pile foundation box 3 and the seabed.

[0041] The pile foundation box 3 is divided into a plurality of watertight ballast tanks, and air ducts are arranged in the tanks. When the bottom of the tank is damaged, water can be discharged by high-pressure compressed air to ensure that the whole ship maintains sufficient buoyancy so as to withdraw from the shallow water area for repair.

[0042] The lower pile foundation boxes 3 are connected by a retractable connecting rod 6 in a ball joint manner. When the water depths of the lower floating bodies are inconsistent, the retractable connecting rod 6 is adjusted to connect the pile foundation boxes 3 together to form a whole, thereby increasing the stability of the bottom.

[0043] like Figure 4 , 5 As shown in 6, according to the user's requirements, the bottom-seated self-elevating engineering vessel can be designed in the form of longitudinal pile foundation box arrangement or transverse pile foundation box arrangement. Figure 4 It is arranged vertically.

[0044] The engineering ship divides the floating body of the traditional ship into two groups, upper and lower, which provide buoyancy together. The upper floating body is mainly composed of oil tanks, fresh water tanks and ballast tanks; the pile foundation box 3 is mainly equipped with a watertight ballast tank, and its buoyancy can be adjusted according to engineering requirements. The pile foundation box 3 structure is specially strengthened according to the assumed operating conditions.

[0045] The pile foundation box 3 at the bottom of the engineering ship is embedded in the upper hull in terms of appearance. When floating, the engineering ship is no different from a traditional engineering ship.

[0046] The salvage engineering vessel chooses suitable sea conditions to enter the shallow water construction area; its built-in dynamic positioning system can assist the ship to get into position and lower it to the bottom.

[0047] In order to cope with the uneven geology underwater, the connection between the pile foundation box 3 and the pile leg 2 adopts a ball joint, and the lower multi-pile foundation box 3 can deflect to a certain extent according to the seabed conditions to adapt to the seabed terrain. A ball joint is also used between the lower pile foundation box 3 and the connecting rod, and a telescopic cylinder is provided on the connecting rod. The length of the connecting rod can be adjusted according to the posture of the lower multi-pile foundation box 3.

[0048] A high-pressure water spray port is provided at the bottom of the lower pile foundation box 3, and water can be sprayed downward to reduce the adsorption force of the silt when the lower floating body leaves the bottom.

[0049] This bottom-sitting self-elevating multifunctional salvage engineering vessel can maintain a relatively small draft in a floating state. It can navigate shallow water construction areas by itself and can be dynamically positioned to the designed bottom-sitting position. After being seated on the hard seabed, the multi-pile pile foundation box at the bottom of the engineering vessel can maintain a larger contact area with the seabed compared to traditional self-elevating platforms; compared to traditional fully bottom-sitting ships, the pile foundation box 3 reduces the engineering vessel's requirements for the overall flatness of the seabed. During operation, the pile foundation box 3 sinks to the seabed below the water surface, and the upper hull is lifted off the water surface by the pile legs to form a sufficient air gap, so that the buoyancy of the entire ship remains basically unchanged under large swell sea conditions, and the smaller pile foundation box 3 is also subject to a smaller force of current, thereby greatly reducing the impact of the marine environment on the structure of the working platform and ensuring the operating capacity of the working platform in relatively severe sea conditions.

[0050] 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 method for using a bottom-sitting self-elevating multifunctional salvage engineering vessel, characterized in that: A bottom-sitting self-elevating multifunctional salvage engineering vessel comprises an upper working platform, pile legs and a pile foundation box, wherein the pile legs are provided with a plurality of legs, one end of the pile legs is connected to the pile foundation box, and the other end is inserted into the upper working platform, and the pile legs are driven to rise and fall by a lift arranged in the upper working platform, and each pile foundation box is provided with a plurality of pile legs, and a plurality of parallel pile foundation boxes are arranged on the upper working platform, and a receiving groove is arranged at the bottom of the upper working platform, and the shape of the receiving groove matches the pile foundation box, and the pile foundation box can be retracted into the receiving groove of the upper working platform, and a living building and a lifting equipment are arranged on the top of the upper working platform; the pile foundation box is connected to the pile legs by a ball joint; the pile foundation box is composed of a plurality of separated watertight ballast tanks, and a high-pressure air pipeline is arranged in the watertight ballast tank; a plurality of water spraying ports are arranged at the bottom of the pile foundation box; a rubber pad is arranged at the bottom of the pile foundation box; a retractable connecting rod is arranged on the side of the pile foundation box, and the end of the retractable connecting rod is connected to the adjacent pile foundation box through a ball joint; The method of use includes the following steps: (1) When the salvage ship is sailing, the pile foundation box is retracted and embedded into the upper working platform to form a complete hull; (2) The salvage engineering vessel selects suitable sea conditions to enter the shallow water construction area. Its built-in dynamic positioning system can assist the vessel in getting into position and preparing to lower it to the bottom; (3) When the pile is seated on the bottom, the elevator lowers the pile legs, the upper working platform is separated from the pile foundation box, the pile foundation box sits on the seabed, and the upper working platform is lifted up above the water surface to form a sufficient air gap; (4) In order to cope with the uneven geology underwater, the connection between the pile foundation box and the pile legs adopts a ball joint. The pile foundation box can be deflected to a certain extent according to the seabed conditions to adapt to the seabed terrain. A ball joint is used between the pile foundation box and the pile legs. The length of the pile legs can be adjusted according to the posture of the pile foundation box until the upper working platform is level; (5) When the water depths of the lower buoys are inconsistent, adjust the retractable connecting rod to connect the pile foundation boxes together to form a whole, thereby increasing the stability of the bottom. (6) When the engineering ship is evacuated, the high-pressure water jets installed at the bottom of the pile foundation box spray water downward to reduce the adsorption force of the silt, and then the elevator is started to retract the pile legs. The pile foundation box is folded up and embedded into the upper working platform to form a complete hull, and the engineering ship sails to the next working sea area.

Images