Inverted pile leg coupling device

Abstract

The utility model discloses an inverted pile leg coupling device. The inverted pile leg coupling device comprises a sleeve; the top seat is arranged at the top of the sleeve; the sand box is arranged in the sleeve, and the top of the sand box is fixedly connected with the top seat; the sand box is used for containing sand, and the height of the sand box is adjusted by discharging the sand. The partition plate is fixedly connected with the sand box, and a cylindrical cavity is reserved in the center of the partition plate; the thorn cone receiver is fixedly connected with the partition plate, and a vertical buffer piece and a horizontal buffer piece are arranged on the thorn cone receiver; the vertical buffer piece is arranged on the thorn cone receiver below the partition plate; and the horizontal buffer piece is arranged between the sleeve and the thorn cone receiver. The device adopts an inverted integral structure, is integrally designed and manufactured, and is directly mounted on an upper module in a manufacturing plant, so that offshore construction and protection after mounting are avoided, terrestrial offshore construction is realized, the construction period is effectively shortened, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of marine engineering industry, and in particular to an inverted pile leg coupling device. Background Art

[0002] The leg unit (LMU) is widely used in the overall floating installation of large offshore platforms. It plays a role in buffering collision during the docking of the upper module tip and the jacket pile pipe, and is an indispensable key device in floating installation. Most projects at home and abroad use traditional upright LMU, which is installed on the top of the jacket. After the construction of the lower jacket is completed, it is transported to the offshore destination and then installed by floating crane. After installation, it must be well protected against waterproofing and moisture. This operation method is relatively cumbersome and requires offshore construction. After installation, it needs to be well protected, which is time-consuming and labor-intensive.

[0003] In view of the above situation, it is urgent to develop a new pile-leg coupling device that can avoid offshore construction and post-installation protection, realize offshore construction on land, effectively shorten construction period and reduce costs. Utility Model Content

[0004] In view of the defects existing in the prior art, the purpose of the utility model is to provide an inverted pile leg coupling device, which adopts an inverted integral structure, integrated design and manufacturing, and is directly installed on the upper module in the manufacturing plant, avoiding offshore construction and post-installation protection, realizing offshore construction on land, effectively reducing construction period and reducing costs.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an inverted pile leg coupling device, comprising:

[0007] Sleeve;

[0008] A top seat, arranged on the top of the sleeve;

[0009] A sandbox is arranged in the sleeve, and the top of the sandbox is fixedly connected to the top seat; the sandbox is used to place sand, and the height of the sandbox is adjusted by placing sand;

[0010] A partition is fixedly connected to the sandbox, and a cylindrical cavity is left at the center of the partition;

[0011] The thorn cone receiver is fixedly connected to the partition, and is provided with a vertical buffer and a horizontal buffer; the vertical buffer is sleeved on the thorn cone receiver below the partition; the horizontal buffer is arranged between the sleeve and the thorn cone receiver.

[0012] Preferably, the sandbox includes a first cylinder connected to the top seat, a second cylinder fixedly connected to the partition, a connecting rod for connecting the top seat and the partition, and an hourglass for placing sand; the first cylinder is sleeved in the second cylinder; the bottom end of the connecting rod is fixedly connected to the partition, and the top end thereof is movably connected to the top seat, and a limiting bolt is provided at the top end of the connecting rod; the hourglass is mounted on the partition.

[0013] Preferably, the partition is formed by welding steel plates, and the cavity between the steel plates is poured with concrete.

[0014] Preferably, an adjustment plate is provided between the partition and the vertical buffer member.

[0015] Preferably, the thorn cone receiver includes a guide tube connected to the partition and a receiving tray fixedly connected to the guide tube; a guide interface opening downward is provided at the bottom center of the receiving tray.

[0016] Preferably, the receiving tray is made of a steel plate, and the cavity therein is poured with concrete.

[0017] Preferably, the vertical buffer member is sleeved on the guide tube below the partition.

[0018] Preferably, the horizontal buffer is arranged between the receiving tray and the sleeve.

[0019] Preferably, the guide interface is conical, and its taper matches the taper of the tip on the guide frame leg.

[0020] The inverted pile leg coupling device of the utility model has the following beneficial effects:

[0021] The inverted pile leg coupling device of the utility model is an inverted structure, which can be installed on the upper module in the manufacturing plant and can be installed before the upper module is shipped, thereby reducing the project construction period. The utility model can change the current situation that the upright pile leg coupling device can only be installed on the lower conductor frame and must be constructed at sea, thereby avoiding sea transportation, construction and post-installation protection, and realizing land-based offshore construction. The vertical buffer and sandbox have dual height adjustment functions, which greatly meet the needs of marine engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0023] Figure 1 It is a structural schematic diagram of the inverted pile leg coupling device of the utility model;

[0024] Figure 2Schematic diagram of the inverted pile leg coupling device of the utility model before and after the sand box is filled with sand; (a) is a schematic diagram of the structure of the inverted pile leg coupling device before the sand box is filled with sand, and (b) is a schematic diagram of the structure of the inverted pile leg coupling device after the sand box is filled with sand;

[0025] Figure 3 This is a schematic diagram of the installation of the vertical buffer;

[0026] Figure 4 This is a schematic diagram of the installation of the transverse buffer;

[0027] Figure 5 Schematic diagrams of the installation of the inverted pile leg coupling device of the utility model; (a) is a schematic diagram of the inverted pile leg coupling device being hoisted above the pile leg plug tip of the jacket; (b) is a schematic diagram of the inverted pile leg coupling device being placed on the pile leg plug tip of the jacket;

[0028] In the figure, 1, sleeve; 2, top seat; 3, sand box; 31, first cylinder; 32, second cylinder; 33, limit bolt; 34, connecting rod; 4, hourglass; 5, partition; 51, cylindrical cavity; 6, adjustment plate; 7, vertical buffer; 8, horizontal buffer; 9, spike receiver; 91, guide tube; 92, receiving plate; 93, guide interface; 10, inverted pile leg coupling device; 11, pile leg; 12, plug tip. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form.

[0030] At present, the pile-leg coupling device needs to be transported to the offshore destination after the lower conductor frame is installed, and then installed by floating crane, and then waterproof and moisture-proof protection is performed; this operation method is relatively cumbersome, requires offshore construction, and needs to be well protected after installation, which is time-consuming and labor-intensive. The utility model adopts an inverted overall structure, integrated design and manufacturing, and after the upper module is manufactured in the factory, it is installed on the upper module for floating installation.

[0031] Combination Figure 1As shown, the inverted pile leg coupling device 10 provided by the utility model comprises a sleeve 1, a top seat 2, a sand box 3, a partition 5 and a spiked cone receiver 9. The sleeve 1 is welded by rolling a cylinder from a rear steel plate to carry other components of the inverted pile leg coupling device 10. The top seat 2 is arranged at the top of the sleeve 1, which is made of a steel plate and is welded to the top of the sleeve 1 as required during manufacturing. The sand box 3 is arranged in the sleeve 1, and its top is fixedly connected to the top seat 2; the sand box 3 is used to place sand, and the height of the sand box 3 can be adjusted by placing sand, so that the height of the inverted pile leg coupling device 10 is reduced to meet the needs of the project. The partition 5 is fixedly connected to the sand box 3, and the partition 5 is welded by steel plates. Concrete is poured in the cavity between the steel plates to strengthen the strength of the partition 5; a cylindrical cavity 51 is left at the center of the partition 5 so that the cavity of the guide tube 91 above the spiked cone receiver 9 moves upward in the cavity. The spike cone receiver 9 is fixedly connected to the bulkhead 5, and is provided with a vertical buffer 7 and a horizontal buffer 8; the vertical buffer 7 is sleeved on the spike cone receiver 9 below the bulkhead 5 to mitigate the vertical collision caused by the floating installation of the offshore platform; the horizontal buffer 8 is provided between the sleeve 1 and the spike cone receiver 9 to mitigate the lateral collision caused by the floating installation of the offshore platform.

[0032] Combination Figure 1 As shown, the sandbox 3 includes a first cylinder 31 connected to the top seat 2, a second cylinder 32 fixedly connected to the partition 5, a connecting rod 34 for connecting the top seat 2 and the partition 5, and two hourglasses 4 for releasing sand. Among them, the first cylinder 31 is sleeved in the second cylinder 32, the diameter of the first cylinder 31 is slightly smaller than the diameter of the second cylinder 32, and the two cylinders are staggered. The bottom end of the connecting rod 34 is fixedly connected to the partition 5 below it, and its top end is movably connected to the top seat 2 through a mounting hole set on the top seat 2. The top end of the connecting rod 34 is provided with a limiting bolt 33. The connecting rod 34 and the limiting bolt 33 thereon can strengthen the connection between the second cylinder 32 and the first cylinder 31 on the one hand, and fix the partition 5 on the top seat 2 on the other hand. The hourglass 4 is made of a round tube and is welded obliquely downward on the partition 5. The top end of the hourglass 4 is connected to the sandbox 3 so that the height of the device can be adjusted by releasing the sand in the sandbox 3 (see Figure 2 (a) and (b)), meeting the engineering needs; a sand retaining plate is provided at the end of the hourglass 4; in a specific embodiment, at least two hourglasses 4 are provided, such as three or four.

[0033] Combination Figure 1 As shown, an adjustment plate 6 is provided between the partition 5 and the vertical buffer member 7. The adjustment plate 6 is a steel plate welded to the bottom of the partition 5. Its function is to increase the pressure area.

[0034] Combination Figure 1As shown, the spike cone receiver 9 includes a guide tube 91 connected to the partition 5 and a receiving tray 92 fixedly connected to the guide tube 91. The guide tube 91 is a round tube, the top of which is fixedly connected to the partition 5, and the bottom of which is fixedly connected to the receiving tray 92. A guide interface 93 with an opening downward is provided at the bottom center of the receiving tray 92; the receiving tray 92 is made of a steel plate, and the cavity therein is poured with concrete.

[0035] Combination Figure 1 , Figure 3 As shown, the vertical buffer member 7 is made of steel plate and rubber, and is sleeved on the guide pipe 91 below the partition 5 to alleviate the vertical collision caused by the floating installation of the offshore platform.

[0036] Combination Figure 1 , Figure 4 As shown, the horizontal buffer member 8 is disposed between the receiving tray 92 and the sleeve 1, and the horizontal buffer member 8 is fixed to the receiving tray 92 by countersunk bolts to alleviate the vertical collision caused by the floating installation of the offshore platform.

[0037] Combination Figure 1 As shown, the guide interface 93 is a conical structure, and its taper matches the taper of the plug tip 12 on the pile leg 11, so as to ensure the overall floating installation of the offshore platform.

[0038] Combination Figure 5 As shown, before the upper assembly is shipped, the inverted pile leg coupling device 10 of the utility model is installed on the upper assembly, and then the upper assembly is transported to the offshore destination by a transport ship, and then the upper assembly is installed on the fixed offshore jacket by floating mode; Figure 5 As shown in (a) and (b), during the installation process, after the spiked cone receiver 9 of the inverted leg coupling device 10 is aligned with the plug tip 12 on the jacket leg 11, the transport ship gradually sinks, and after the inverted leg coupling device 10 contacts the plug tip 12 on the jacket leg 11, the load begins to transfer, and the weight of the upper assembly is gradually transferred to the jacket leg 11 through the inverted leg coupling device 10. After the transport ship and the upper assembly reach a safe gap, the ship is withdrawn, and the vertical buffer 7 of the inverted leg coupling device 10 continues to shrink under the pressure of the upper assembly until the lower part of the sleeve 1 reaches the designed position. If the lower part of the sleeve 1 cannot reach the designed position under the pressure of the upper assembly, the hourglass 4 is opened to release sand (see Figure 2 (a) and (b) in the figure), until the lower part of the sleeve 1 reaches the designed position and the sand is released, the inverted leg coupling device 10 is welded to the leg 11 and the tip 12 of the jacket, and the overall floating installation of the offshore platform is completed; during the above installation process, the horizontal buffer 8 and the vertical buffer 7 are used to balance the lateral collision and vertical collision between the inverted leg coupling device 10 on the upper block and the jacket.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An inverted pile leg coupling device, characterized in that: include: Sleeve; A top seat, arranged on the top of the sleeve; A sandbox is arranged in the sleeve, and the top of the sandbox is fixedly connected to the top seat; the sandbox is used to place sand, and the height of the sandbox is adjusted by placing sand; A partition is fixedly connected to the sandbox, and a cylindrical cavity is left at the center of the partition; The thorn cone receiver is fixedly connected to the partition, and is provided with a vertical buffer and a horizontal buffer; the vertical buffer is sleeved on the thorn cone receiver below the partition; the horizontal buffer is arranged between the sleeve and the thorn cone receiver, The sandbox includes a first cylinder connected to the top seat, a second cylinder fixedly connected to the partition, a connecting rod for connecting the top seat and the partition, and an hourglass for placing sand; the first cylinder is sleeved in the second cylinder; the bottom end of the connecting rod is fixedly connected to the partition, and the top end thereof is movably connected to the top seat, and a limiting bolt is provided at the top end of the connecting rod; the hourglass is mounted on the partition.

2. The inverted pile leg coupling device according to claim 1, characterized in that: The partition is formed by welding steel plates, and the cavity between the steel plates is poured with concrete.

3. The inverted pile leg coupling device according to claim 1, characterized in that: An adjustment plate is provided between the partition and the vertical buffer.

4. The inverted pile leg coupling device according to claim 1, characterized in that: The thorn cone receiver comprises a guide tube connected to the partition plate and a receiving tray fixedly connected to the guide tube; a guide interface opening downward is provided at the bottom center of the receiving tray.

5. The inverted pile leg coupling device according to claim 4, characterized in that: The receiving tray is made of steel plates, and the cavity therein is poured with concrete.

6. The inverted pile leg coupling device according to claim 4, characterized in that: The vertical buffer member is sleeved on the guide tube below the partition.

7. The inverted pile leg coupling device according to claim 4, characterized in that: The horizontal buffer is arranged between the receiving tray and the sleeve.

8. The inverted pile leg coupling device according to claim 4, characterized in that: The guide interface is in a conical shape, and its taper matches the taper of the tip on the guide frame pile leg.

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