Large-diameter single-pile offshore floating and transporting device

Abstract

The utility model relates to the technical field of offshore floating transportation, in particular to a large-diameter single-pile offshore floating transportation device which comprises a steel pile and a sealing cover arranged at the front end of the steel pile and used for sealing a front opening of the steel pile, and a blocking device used for blocking a rear opening of the steel pile is further arranged at the rear end of the steel pile. The blocking device comprises a curved-surface end socket body and an annular plate arranged on the edge of the end socket body, a clamping block which is driven by a piston assembly to swing at an angle is arranged on the convex surface of the end socket body, and the contact face of the clamping block and the steel pile is in a tooth shape. The sealing head type structure is plugged to the tail of the steel pile, the clamping blocks driven by the piston assembly and the inner wall of the steel pile are fixedly clamped, the plugging device is limited to be not disengaged from the tail of the steel pile, the clamping blocks with the tooth-shaped faces are tightly attached to the inner wall of the steel pile, the anti-disengagement safety is improved, and meanwhile the sealing effect is further improved through the external water pressure effect during transportation; the utility model has the advantages of simple and convenient manufacture, good economical efficiency and good popularization and application value.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore floating, in particular to a large-diameter single pile offshore floating device. Background Art

[0002] With the rapid development of offshore wind power, restrictions on grid-connected electricity prices are becoming increasingly stringent, requiring overall development costs to be reduced. After years of practice, large-diameter steel piles have been found to have the best overall economic efficiency, especially for wind turbine foundations in water depths of less than 50m, and have been widely used. However, as wind turbine specifications continue to increase, the required diameter and length of steel piles have increased significantly. However, the transportation of steel piles is carried out by specialized barges, which are limited by ship resources and deck area, resulting in very high transportation costs. At the same time, the long loading time for barge transportation makes it difficult to reduce the overall development cost. Therefore, in order to meet the needs of offshore wind power development, how to improve the transportation economy of single piles is an important issue that needs to be addressed urgently. Utility Model Content

[0003] The purpose of the utility model is to provide a large-diameter single pile offshore floating device.

[0004] The utility model provides the following technical solutions:

[0005] The utility model proposes a large-diameter single pile offshore floating device, comprising a steel pile and a cover provided at the front end of the steel pile for sealing the front opening of the steel pile, and a blocking device provided at the rear end of the steel pile for blocking the rear opening of the steel pile;

[0006] The blocking device includes a curved head body and a ring plate arranged on the edge of the head body. A clamping block that swings at the driving angle of the piston assembly is arranged on the convex surface of the head body, and the contact surface between the clamping block and the steel pile is toothed.

[0007] Furthermore, it also includes a ballast bag, which is placed at the rear end of the steel pile.

[0008] Furthermore, a sealing ring is provided on the side wall of the head body close to the ring plate.

[0009] Furthermore, the head body is provided with a plurality of through holes along the circumference of the central axis, and a cylinder with a flange is nested and welded on the inner wall of the through hole. The flange of the cylinder and the flange blind plate are fastened with bolts, and the piston assembly is arranged in the cylinder, and the telescopic end of the piston assembly is hinged to the clamping block.

[0010] Furthermore, a plurality of ribs are fixed on the outer wall of the cylinder, and the ribs are fixed on the convex surface of the head body.

[0011] Furthermore, a plurality of front hanging heads are provided on the convex surface of the head body, and a plurality of rear hanging heads are provided on the concave surface of the head body.

[0012] Compared with the prior art, the present invention adopts a head-shaped structure which is plugged into the tail of the steel pile, and a block driven by a piston assembly is fixedly clamped with the inner wall of the steel pile to prevent the sealing device from falling out of the tail of the steel pile. The block with a serrated surface is tightly attached to the inner wall of the steel pile, which improves the anti-falling safety. At the same time, the external water pressure during transportation is conducive to further improving the sealing effect. The sealing device installed at the tail and the cover at the front end of the steel pile form a watertight buoy with the steel pile to meet the needs of floating transportation at sea. There are also some ballast bags at the rear end of the steel pile to prevent the steel pile from twisting in the water during transportation, and at the same time lift the front end of the steel pile to reduce towing resistance. The present invention is simple and convenient to manufacture, has good economic efficiency, and has good promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional schematic diagram of the present utility model.

[0014] Figure 2 Schematic diagram of the blocking device from a concave perspective.

[0015] Figure 3 Schematic diagram of the blocking device from a convex perspective.

[0016] In the figure, 1-steel pile; 2-sealing cover; 3-blocking device; 31-head body; 32-ring plate; 4-piston assembly; 5-block; 6-ballast bag; 7-sealing ring; 8-cylinder; 9-flange blind plate; 10-rib plate; 11-front lifting head; 12-rear lifting head. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] In one embodiment of the present invention, a large-diameter single pile offshore floating device includes a steel pile 1 and a cover 2 provided at the front end of the steel pile 1 for sealing the front opening of the steel pile 1. The rear end of the steel pile 1 is further provided with a plugging device 3 for blocking the rear opening of the steel pile 1.

[0019] The blocking device 3 includes a curved head body 31 and a ring plate 32 arranged on the edge of the head body 31. A block 5 is provided on the convex surface of the head body 31, which swings at an angle driven by the piston assembly 4, and the contact surface between the block 5 and the steel pile 1 is toothed; the toothed contact surface of the block 5 plays a better role in fixation and anti-slip; in actual application, the front opening of the steel pile 1 is sealed by the cover 2, and the rear opening is blocked by the blocking device 3, and the internal cavity of the steel pile 1 is sealed to meet the needs of floating at sea.

[0020] In one embodiment of the present invention, a ballast bag 6 is further included, which is placed at the rear end of the steel pile 1. The steel pile 1 has a large space inside, and the entire pile will float on the water. In addition, due to the weight of the soil filled in the ballast bag 6, the front end of the steel pile 1 is tilted, which is beneficial to reducing towing resistance.

[0021] In one embodiment of the present invention, a sealing ring 7 is provided on the side wall of the head body 31 close to the ring plate 32 to achieve fixed clamping and sealing with the steel pile 1.

[0022] In one embodiment of the present utility model, the head body 31 is provided with a plurality of through holes along the circumference of the central axis, and a cylinder 8 with a flange is nested and welded on the inner wall of the through hole. The flange of the cylinder 8 and the flange blind plate 9 are bolted and fixed, and the piston assembly 4 is arranged in the cylinder 8, and the telescopic end of the piston assembly 4 is hinged to the clamping block 5; after the blocking device 3 blocks the rear opening of the steel pile 1, the telescopic end of the piston assembly extends so that the clamping block 5 is close to the inner wall of the steel pile 1, thereby achieving fastening and stability.

[0023] In the above embodiment, a plurality of ribs 10 are fixed on the outer wall of the cylinder 8, and the ribs 10 are fixed on the convex surface of the head body 31 to improve the stress safety.

[0024] In one embodiment of the present invention, a plurality of front hanging heads 11 are provided on the convex surface of the head body 31, and a plurality of rear hanging heads 12 are provided on the concave surface of the head body 31; the front hanging heads are used to pull from the inside of the steel pile 1 when the blocking device 3 is lifted and installed; and the rear hanging heads are used to pull when the blocking device 3 is recovered and removed.

[0025] In one embodiment of the present invention, pile hanging heads are provided on both sides of the exterior of the steel pile, and the pile hanging heads are used to facilitate pulling.

[0026] In actual application, a tugboat is used to pull and tow the utility model, and the towing cable is connected to the pile lifting heads on both sides to control the towing speed. At the same time, a small harbor tug assists at the rear, and controls the change of the towing direction of the steel pile by pushing on both sides, and tows it to the construction site. After arriving at the construction site, the utility model is moored to the side of the crane that has been in place, the towing cable is released, and the wire rope is connected to the rear lifting point. The crane hook of the crane is hooked to the pile lifting head, and the tail of the steel pile is slowly lifted to sink. The diver operates the cover to open, and seawater enters the interior of the steel pile. When the steel pile is basically filled, the piston assembly is operated to retract to release the fixation of the block. Due to the lifted steel pile, the ballast bag slides toward the rear end, so that the plugging device is pushed out of the tail end of the steel pile after the piston assembly retracts. The wire rope pulls the plugging device back to the construction ship. After the ballast bag is completely unloaded, the diver goes into the water to open the bag opening to let the soil in the bag flow out, and the ballast bag is recovered. After that, the steel pile is positioned and driven in, completing the offshore construction.

[0027] The implementation methods of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A large-diameter single-pile offshore floating device, characterized by: It comprises a steel pile and a cover provided at the front end of the steel pile for sealing the front opening of the steel pile, and a blocking device for blocking the rear opening of the steel pile is further provided at the rear end of the steel pile; The blocking device includes a curved head body and a ring plate arranged on the edge of the head body. A clamping block that swings at the driving angle of the piston assembly is arranged on the convex surface of the head body, and the contact surface between the clamping block and the steel pile is toothed.

2. A large-diameter monopile offshore floating device according to claim 1, characterized in that: It also includes a ballast bag, which is placed at the rear end of the steel pile.

3. The large-diameter monopile offshore floating device according to claim 1, characterized in that: A sealing ring is provided on the side wall of the head body close to the ring plate.

4. The large-diameter monopile offshore floating device according to claim 1, characterized in that: The head body is provided with a plurality of through holes along the circumference of the central axis, and a cylinder with a flange is nested and welded on the inner wall of the through hole. The flange of the cylinder and the flange blind plate are fixed with bolts. The piston assembly is arranged in the cylinder, and the telescopic end of the piston assembly is hinged to the clamping block.

5. The large-diameter monopile offshore floating device according to claim 4, characterized in that: A plurality of ribs are fixed on the outer wall of the cylinder, and the ribs are fixed on the convex surface of the head body.

6. The large-diameter monopile offshore floating device according to claim 1, characterized in that: A plurality of front hanging heads are arranged on the convex surface of the head body, and a plurality of rear hanging heads are arranged on the concave surface of the head body.

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