Jacket platform installation device, installation method and installation vessel

Abstract

The present invention provides a jacket platform installation device, installation method, and installation vessel, wherein the device includes a hull, a winch and a horizontal frame fixedly mounted on the upper surface of the hull, a vertical frame mounted on the horizontal frame, one pair of corners of the vertical frame being rotatably connected to the horizontal frame, and the other pair of corners being fixedly connected to the horizontal frame via limit springs; pulleys are respectively provided on the horizontal frame and the vertical frame, and the steel rope of the winch is fixedly connected to the jacket platform via the pulleys. The jacket platform installation device, installation method, and installation vessel of the present invention can efficiently complete the entire process of loading, transporting, launching, and mudding the jacket platform, can greatly reduce the installation cost of the jacket platform, and greatly reduce the connection and commissioning time at sea, with significant economic benefits. At the same time, for jacket platforms in different water depths, only the height of the installation frame needs to be adjusted, thereby improving the installation adaptability range.

Description

Technical Field

[0001] The present invention relates to the technical field of jacket installation, and in particular to a jacket platform installation device, an installation method and an installation vessel. Background Art

[0002] Jacket platforms, also known as piled platforms, are supported by piles driven into the seabed. They are designed to withstand external forces such as wind, waves, and currents. Jacket platforms can be categorized as pile clusters, pile foundations (jacket platforms), and leg-column platforms. Jacket platforms primarily consist of four components: the jacket, piles, jacket cap, and deck. They offer strong adaptability, safety, reliability, simplicity, and low cost.

[0003] Currently, jacket platforms come in varying sizes. There are no dedicated installation vessels for launching and installing small jacket platforms, leading to uncontrollable installation costs. The existing method involves partial disassembly and reassembly, resulting in unstable connections and prolonged commissioning, resulting in poor performance. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a jacket platform installation device, an installation method and an installation vessel, so as to solve the problems of high jacket installation cost and long installation time in the prior art.

[0005] To achieve the above-mentioned objectives and other related objectives, the present invention provides a jacket platform installation device, which includes: a hull, a winch and a horizontal frame are fixedly installed on the upper surface of the hull, a vertical frame is installed on the horizontal frame, one pair of corners of the vertical frame are rotatably connected to the horizontal frame, and the other pair of corners are fixedly connected to the horizontal frame via limit springs; pulleys are respectively provided on the horizontal frame and the vertical frame, and the steel rope of the winch is fixedly connected to the jacket platform via the pulleys.

[0006] In one embodiment of the present invention, a pulley A is fixed to the top of the vertical frame, and at least one pulley B that cooperates with the pulley A is fixed to the horizontal frame. The steel rope first passes through the pulley B and then passes through the pulley A to be finally fixedly connected to the jacket platform.

[0007] In one embodiment of the present invention, the device further comprises: a suction anchor water pump, disposed at the upper end of the hull, for connecting to the suction anchor foundation of the jacket platform to adjust the depth of the suction anchor foundation into the mud.

[0008] In one embodiment of the present invention, the included angle between the straight arm of the vertical frame close to the jacket platform and the horizontal frame is in a range of 70° to 90°.

[0009] In one embodiment of the present invention, the device further comprises: a limit block provided on the side wall where the vertical frame contacts the jacket platform; a bolt retaining ring is provided on the limit block for locking the jacket platform and the vertical frame.

[0010] In one embodiment of the present invention, the size of the vertical frame is adjustable, and the height is 2 / 3 of the jacket platform.

[0011] To achieve the above-mentioned and other related objectives, the present invention provides a jacket platform installation method, which is applied to any of the jacket platform installation devices described above, and the method comprises:

[0012] Loosen the limit spring connected between the horizontal frame and the vertical frame;

[0013] Fixing the jacket platform by using a limit block provided on the vertical frame;

[0014] When the winch is started to pull up the jacket platform to a preset angle using a steel rope, the limit spring is locked to complete the loading.

[0015] In one embodiment of the present invention, the method further comprises a transporting step of towing the jacket to a target location using a tugboat.

[0016] In one embodiment of the present invention, the method further includes a disembarkation step, specifically comprising:

[0017] Loosen the limit spring, start the winch, and when the vertical frame rebounds to a predetermined position, lock the limit spring;

[0018] releasing the fixing function of the limit block, starting the winch and lowering the jacket platform into the seawater using the steel rope;

[0019] After the suction anchor foundation at the bottom of the jacket platform touches the bottom, the azimuth angle of the jacket platform is adjusted to a preset position, and the suction anchor water pump is started to adjust the suction anchor foundation into the mud to a preset depth.

[0020] To achieve the above-mentioned object and other related objects, the present invention provides a jacket platform installation vessel, comprising: a jacket platform installation device as described in any one of the above-mentioned items.

[0021] As described above, the jacket platform installation device, installation method, and installation vessel of the present invention can simply and effectively complete the entire process of jacket platform loading, transportation, launching, and mudding, greatly reducing the installation cost of the jacket platform and significantly shortening the time for offshore connection and commissioning. The economic benefits are very significant. At the same time, for jacket platforms in different water depths, only the height of the installation frame needs to be adjusted, greatly improving the adaptability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a schematic structural diagram of a jacket platform installation device according to an embodiment of the present invention;

[0023] Figure 2 Shown is a schematic diagram of a horizontal frame structure of a jacket platform installation device according to an embodiment of the present invention;

[0024] Figure 3 Schematic diagram showing the structure of two pulleys A6 in one embodiment of the jacket platform installation device of the present invention;

[0025] Figure 4 A diagram showing the steps of a method for installing a jacket platform according to an embodiment of the present invention;

[0026] Figure 5 A diagram showing the steps of a jacket platform installation method according to another embodiment of the present invention;

[0027] Figures 6 to 10 Shown is a schematic diagram of a platform installation method for a jacket platform according to an embodiment of the present invention;

[0028] Figure 11 A schematic structural diagram of the jacket platform installation vessel of the present invention is shown. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0030] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0031] See also Figure 1 In one embodiment of the invention, the jacket platform installation device of the present invention includes:

[0032] A hull 1, wherein a winch 2 and a horizontal frame 3 are fixedly mounted on the upper surface of the hull 1, a vertical frame 4 is mounted on the horizontal frame 3, one pair of corners of the vertical frame 4 are rotatably connected to the horizontal frame 3, and the other pair of corners are fixedly connected to the horizontal frame 3 via limit springs 5;

[0033] The horizontal frame 3 and the vertical frame 4 are respectively provided with pulleys, and the steel rope 12 of the winch 2 is fixedly connected to the jacket platform 9 through the pulleys.

[0034] It should be noted that if Figure 2 As shown, the horizontal frame 3 is a polygonal frame, and the side view of the vertical frame 4 is an upright triangular frame to ensure the stability of the vertical frame 4. The side corners of the vertical frame 4 close to the jacket platform 9 are rotatably connected to the horizontal frame 3, while the other pair of corners are fixedly connected to the horizontal frame 3 through the above-mentioned limit springs 5.

[0035] Furthermore, a pulley A 6 is fixed to the top of the vertical frame 4, and at least one pulley B 7 cooperating with the pulley A 6 is fixed on the horizontal frame 3. The steel rope 12 first passes through the pulley B 7 and then passes through the pulley A 6 to be finally fixedly connected to the jacket platform 9.

[0036] It should be noted that the reference Figure 1 , it can be seen that the pulley A 6 is fixed on the top of the vertical frame 4. Since the horizontal frame 3 is a multi-frame frame, and the vertical frame 4 is a multi-frame frame like the horizontal frame 3, the number of the pulley A 6 can be one or two, and the corresponding number of the pulley B 7 is also one or two. For example, when the pulley A 6 is set in the middle position of the top side wall of the vertical frame 4, the number of the pulley B 7 is also one and is set in the center line position of the horizontal frame. Correspondingly, the number of the winch 2 is also one, and the position corresponds to the pulley A 6 and the pulley B 7. Figure 3 , is a structural diagram of setting two pulleys A6.

[0037] Furthermore, the device further comprises: a suction anchor water pump 8 , which is provided at the upper end of the hull 1 and is used to connect to the suction anchor foundation 10 of the jacket platform 9 to adjust the depth of the suction anchor foundation 10 into the mud.

[0038] Furthermore, the included angle between the straight arm of the vertical frame 4 close to the jacket platform 9 and the horizontal frame 3 is in the range of 70° to 90°.

[0039] It should be noted that the limit spring 5 can limit the position, increase the movement damping of the vertical frame 4, and slow down the movement speed of the vertical frame 4 relative to the horizontal frame 3. The contact surfaces of the limit spring 5 and the vertical frame 4 and the horizontal frame 3 are connected by welding. The maximum angle between the straight arm of the vertical frame 4 close to the jacket platform 9 and the horizontal frame 3 is 90°. The unfolded angle is related to the center of gravity of the device. The lower the center of gravity, the larger the angle. During the installation process, the center of gravity of the device must always be located inside the hull 1.

[0040] Furthermore, the device further comprises: a limit block 11 , which is provided on the side wall of the vertical frame 4 in contact with the jacket platform 9 ; a bolt clamp is provided on the limit block 11 for locking the jacket platform 9 and the vertical frame 4 .

[0041] It should be noted that the position of the vertical frame 4 and the jacket platform 9 can be relatively stable by the limiting block 11 , and the limiting method can be the bolt clamp or manual welding.

[0042] Furthermore, the size of the vertical frame 4 is adjustable, and the height is “2 / 3” of the jacket platform 9 .

[0043] Specifically, in this embodiment, the vertical frame 4 is provided with an adjustable size, which is specifically achieved by replacing the vertical frames 4 of different sizes. Since the vertical frame 4 is provided with a triangular frame to maintain stability, the vertical frames 4 of different sizes can be used for different jacket platforms.

[0044] See also Figure 4 In one embodiment, a method for installing a jacket platform is provided, the method comprising the following steps:

[0045] Step S41, loosening the limit spring connected between the horizontal frame and the vertical frame;

[0046] Step S42, fixing the jacket platform by using a limit block provided on the vertical frame;

[0047] Step S43: Start the winch to pull up the jacket platform to a preset angle using the steel rope, and then lock the limit spring to complete the loading.

[0048] It should be noted that, during the loading process, the limit spring 5 connected between the hull 1 and the vertical frame 4 is first loosened, so that the vertical frame 4 protrudes about one meter out of the hull 1, and the angle between the straight arm of the vertical frame 4 on the side close to the jacket platform 9 and the horizontal frame 3 is 90°. At this time, the limit spring 5 is locked, and the relative position of the jacket platform 9 and the vertical frame 4 is fixed by using the limit block 11 provided on the vertical frame 4. The limit spring 5 is loosened again, and the winch 2 is started to pull the jacket platform 9 to a preset angle using the steel rope 12. Then, the limit spring 5 is locked to complete the loading. The preset angle is that the angle between the straight arm of the vertical frame 4 on the side close to the jacket platform 9 and the horizontal frame 3 is 70°. Preferably, the jacket platform 9 is transported on the dock by an SPMT (Self-propelled modular transporter), wherein the SPMT is a self-propelled modular transporter, also known as a self-propelled hydraulic flatbed truck.

[0049] Furthermore, in one embodiment of the invention, the method further includes: a transportation step of towing the jacket to a target location using a tugboat.

[0050] It should be noted that the hull 1 can be towed to the target location by using the external tugboat, thereby towing the jacket platform 9 to the installation location at sea.

[0051] Furthermore, in one embodiment of the invention, the method further comprises: a disembarkation step, referring to Figure 5 , specifically including:

[0052] Step S51, releasing the limit spring, starting the winch, and locking the limit spring when the vertical frame rebounds to a predetermined position;

[0053] Step S52, releasing the fixing effect of the limit block, starting the winch, and lowering the jacket platform into the seawater using the steel rope;

[0054] Step S53 : After the suction anchor foundation at the bottom of the jacket platform touches the bottom, the azimuth angle of the jacket platform is adjusted to a preset position, and the suction anchor water pump is started to adjust the suction anchor foundation into the mud to a preset depth.

[0055] Please note that Figures 6 to 10When the hull 1 reaches the target position, the anchor is first dropped to preliminarily limit the position of the hull 1, the limit spring 5 is released, the winch 2 is started, and when the vertical frame 4 rebounds to the predetermined position, the limit spring 5 is locked. At this time, the predetermined position is the state where the straight arm of the vertical frame 4 close to the jacket platform 9 and the horizontal frame 3 form an angle of 90 degrees. Then the fixing effect of the limit block 11 is released, the winch 2 is started to lower the jacket platform 9 into the sea water using the steel rope 12. After the suction anchor foundation 10 at the bottom of the jacket platform 9 touches the bottom, the azimuth angle of the jacket platform 9 is adjusted to the preset position, and the suction anchor water pump 8 is started to adjust the suction anchor foundation 10 to a preset depth in the mud, wherein the preset position of the azimuth angle is obtained by manual measurement. The azimuth angle is adjusted by tightening or loosening the anchor of the hull 1, for example: 20° to the southeast of the south. In addition, the preset position also limits the verticality of the suction anchor foundation 10. To ensure that the verticality of the suction anchor foundation 10 meets the requirements, it is necessary to make the horizontal deviation between the natural plane of the jacket platform 9 and the seawater less than 1°. The horizontal deviation can be adjusted by adjusting the different mud penetration depths of the suction anchor foundations 10, wherein the number of the suction anchor foundations 10 is four. After the azimuth angle and the verticality meet the set requirements, the suction anchor water pump 8 is started to adjust the mud penetration depth of the suction anchor foundation 10 to a preset depth. The preset depth is determined according to different sea mud compositions and can generally be set to eight meters. At this point, the disembarkation and installation process of the jacket platform 9 is completed.

[0056] In addition, Figure 11 As shown, the present invention further provides a jacket platform installation vessel, comprising: any one of the jacket platform installation devices described above.

[0057] In summary, the present invention can simply and effectively complete the entire process of jacket platform loading, transportation, launching, and mudding, which can greatly reduce the installation cost of the jacket platform and greatly shorten the connection and commissioning time at sea. Its economic benefits are very significant. At the same time, for jacket platforms in different water depths, only the height of the installation frame needs to be adjusted, which greatly improves the adaptability of use.

[0058] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A jacket platform installation device, characterized in that: include: A hull, wherein a winch and a horizontal frame are fixedly mounted on the upper surface of the hull, a vertical frame is mounted on the horizontal frame, one pair of corners of the vertical frame are rotatably connected to the horizontal frame, and the other pair of corners are fixedly connected to the horizontal frame via limit springs; The horizontal frame and the vertical frame are respectively provided with pulleys, and the steel rope of the winch is fixedly connected to the jacket platform through the pulleys, wherein a pulley A is fixed to the top of the vertical frame, and at least one pulley B that cooperates with the pulley A is fixed to the horizontal frame, and the steel rope first passes through the pulley B and then passes through the pulley A to finally be fixedly connected to the jacket platform, and the angle between the straight arm of the vertical frame on the side close to the jacket platform and the horizontal frame ranges from 70° to 90°; and A limit block is provided on the side wall where the vertical frame contacts the jacket platform; a bolt clamp is provided on the limit block for locking the jacket platform and the vertical frame.

2. The jacket platform installation device according to claim 1, characterized in that: Also includes: A suction anchor water pump is provided at the upper end of the hull and is used for connecting to the suction anchor foundation of the jacket platform to adjust the depth of the suction anchor foundation into the mud.

3. The jacket platform installation device according to claim 1, characterized in that: The vertical frame is adjustable in size and has a height of 2 / 3 of the jacket platform.

4. A method for installing a jacket platform, characterized in that: The method applied to the jacket platform installation device according to any one of claims 1 to 3 comprises: Loosen the limit spring connected between the horizontal frame and the vertical frame; Fixing the jacket platform by using a limit block provided on the vertical frame; When the winch is started to pull up the jacket platform to a preset angle using a steel rope, the limit spring is locked to complete the loading.

5. The method for installing a jacket platform according to claim 4, wherein: The method further includes a transportation step of towing the jacket to a target location using a tugboat.

6. The method for installing a jacket platform according to claim 4, wherein: It also includes the disembarkation procedures, including: Loosen the limit spring, start the winch, and when the vertical frame rebounds to a predetermined position, lock the limit spring; releasing the fixing function of the limit block, starting the winch and lowering the jacket platform into the seawater using the steel rope; After the suction anchor foundation at the bottom of the jacket platform touches the bottom, the azimuth angle of the jacket platform is adjusted to a preset position, and the suction anchor water pump is started to adjust the suction anchor foundation into the mud to a preset depth.

7. A jacket platform installation vessel, characterized in that: include: The jacket platform installation device according to any one of claims 1 to 3.

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