Offshore floating platform assembly

Abstract

The invention relates to an offshore floating type platform assembly which comprises a platform body and a mooring system, the platform body is used for floating on the sea surface, the mooring system comprises a first mooring cable and a tensioner, the first end of the first mooring cable is used for being fixed to a seabed, and the second end of the first mooring cable penetrates through the tensioner. Wherein the tensioner is installed on the platform body and located above the sea surface, so that the second end of the first mooring rope can be arranged on the tensioner in a penetrating mode above the sea surface. When the tensioner is connected with the first mooring rope, the installation and connection processes are both located above the sea surface, namely, installation can be completed through traction of a construction ship body, the underwater operation part in the installation process of the tensioner is reduced, and the installation difficulty and the installation cost of the tensioner are further reduced. Moreover, due to the fact that the tensioner is installed above the sea surface, when the tightness degree of the first mooring rope is adjusted through the tensioner, operation can be directly conducted above the sea surface, and the adjusting difficulty and cost are reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of marine engineering technology, and in particular to an offshore floating platform assembly. Background Art

[0002] An offshore platform is a structure that provides production and living facilities for activities such as drilling, oil production, shipping, observation, navigation, and construction at sea. It includes a semi-fixed offshore platform whose upper structure is a floating body that can be anchored to the seabed by cables.

[0003] Semi-fixed offshore platforms are subject to environmental loads such as wind, waves and currents in the marine environment, which can cause swaying, heaving, rolling, pitching, and yawing, affecting the normal operation of the platform. To address the above problems, a mooring system is usually used to limit the movement of the platform in the horizontal plane, thereby ensuring that the floating platform can withstand wind and waves at sea. The tensioner of the mooring system is connected between the mooring chain and the floating platform to adjust the tension of the mooring chain. However, in the related technology, the connection between the tensioner and the mooring anchor chain is difficult and the construction cost is high. Summary of the invention

[0004] The purpose of the present disclosure is to provide an offshore floating platform assembly to solve the above technical problems.

[0005] In order to achieve the above-mentioned object, the present disclosure provides an offshore floating platform assembly, including a platform body and a mooring system, wherein the platform body is used to float on the sea surface, and the mooring system includes a first mooring cable and a tensioner, wherein the first end of the first mooring cable is used to be fixed to the seabed, and the second end of the first mooring cable is passed through the tensioner; Wherein, the tensioner is installed on the platform body and is located above the sea surface, so that the second end of the first mooring cable can pass through the tensioner above the sea surface.

[0006] Optionally, the distance between the lower end of the tensioner and the sea surface is greater than or equal to 10 m.

[0007] Optionally, the tensioner includes a tensioner body and a mounting seat, the tensioner body is rotatably connected to the mounting seat, the second end of the first mooring cable is passed through the tensioner body, the mounting seat is installed on the side wall of the platform body, and the upper surface of the mounting seat is flush with or higher than the upper surface of the platform body.

[0008] Optionally, the mounting seat includes a mounting portion and a connecting portion, the mounting portion is mounted on the side wall of the platform body, and the upper surface of the mounting portion is flush with or higher than the upper surface of the platform body, the connecting portion is rotatably connected to the mounting portion via a first rotating shaft, and the tensioner body is rotatably connected to the connecting portion via a second rotating shaft, and the first rotating shaft intersects with the second rotating shaft.

[0009] Optionally, the first rotating shaft enables the angle between the extension direction of the tensioner body and the side wall of the platform body around the axial direction of the first rotating shaft to be adjusted between 20° and 90°; The second rotating shaft enables the included angle of the extension direction of the tensioner body around the axial direction of the second rotating shaft to the side wall of the platform body to be adjusted between 60° and 120°.

[0010] Optionally, the mooring system comprises a first mooring cable group and a second mooring cable group, the first mooring cable group and the second mooring cable group are arranged around the platform body, the first mooring cable group comprises at least one first mooring cable and at least one tensioner, and the second mooring cable group comprises at least one second mooring cable and at least one universal joint; The first end of the second mooring cable is used to be fixed to the seabed, and the second end of the second mooring cable is connected to the universal joint through a first D-type shackle.

[0011] Optionally, the number of the first mooring cable groups is two, the number of the second mooring cable group is one, and the two first mooring cable groups and the one second mooring cable group are arranged at equal intervals around the circumference of the platform body; There is a plurality of first mooring cables in each of the first mooring cable groups, and there is a plurality of second mooring cables in the second mooring cable group. The number of first mooring cables in each of the first mooring cable groups is equal to the number of second mooring cables in the second mooring cable group. The plurality of first mooring cables in each of the first mooring cable groups are equally spaced around the circumference of the platform body, and the plurality of second mooring cables in the second mooring cable group are equally spaced around the circumference of the platform body.

[0012] Optionally, the first mooring cable and the second mooring cable both comprise a platform chain, a counterweight chain, a bottom chain and an anchor chain connected in sequence, one end of the platform chain of the first mooring cable away from the counterweight chain of the first mooring cable is connected to the tensioner, one end of the platform chain of the second mooring cable away from the counterweight chain of the second mooring cable is connected to the universal joint, and one end of the anchor chain away from the bottom chain is fixed to the seabed; Wherein, a plurality of counterweight blocks are detachably arranged on the counterweight chain.

[0013] Optionally, the counterweight block is formed with a first through hole and a second through hole that are interconnected, the first through hole is used for the counterweight chain to pass through, and the locking bolt passes through the second through hole and the chain ring hole on the counterweight chain and is connected to the locking nut located on the other side of the second through hole.

[0014] Optionally, the platform chain is connected to the counterweight chain via a first H-type shackle, the counterweight chain is connected to the bottom chain via a second D-type shackle, and the bottom chain is connected to the anchor head chain via a second H-type shackle; The offshore floating platform assembly further comprises an anchoring device, which is fixed to the seabed, and the anchor head chain is connected to the anchoring device via a third D-type shackle.

[0015] According to the above technical solution, since the tensioner is installed on the platform body and is located above the sea surface, when the tensioner is connected to the first mooring line, the installation and connection process are both located above the sea surface, that is, the connection between the tensioner and the first mooring line can be completed by traction of the construction ship, which reduces the underwater operation part during the installation of the tensioner, and reduces the installation difficulty and installation cost of the tensioner. In addition, since the tensioner is installed above the sea surface, when adjusting the tightness of the first mooring line through the tensioner, it can also be operated directly above the sea surface, which reduces the difficulty and cost of adjustment.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of an offshore floating platform assembly provided in one embodiment of the present disclosure; Figure 2 is a three-dimensional diagram of a tensioner of an offshore floating platform assembly provided in one embodiment of the present disclosure; Figure 3 It is a schematic diagram of the connection between the tensioner and the platform chain of an offshore floating platform assembly provided by one embodiment of the present disclosure; Figure 4 It is a schematic diagram of the connection method between the universal joint and the platform chain of an offshore floating platform assembly provided by an embodiment of the present disclosure; Figure 5 is a stereoscopic diagram of a universal joint of an offshore floating platform assembly provided in one embodiment of the present disclosure; Figure 6 is a schematic top view of an offshore floating platform assembly provided in one embodiment of the present disclosure; Figure 7 It is a schematic diagram of the connection structure of a platform chain and a counterweight chain of an offshore floating platform assembly provided in one embodiment of the present disclosure; Figure 8 is a schematic diagram of a ballast chain of an offshore floating platform assembly provided by an embodiment of the present disclosure, wherein a ballast block is shown; Fig. 9 It is a schematic diagram of the connection structure of the counterweight chain and the bottom chain of the offshore floating platform assembly provided by one embodiment of the present disclosure; Fig.10 It is a schematic diagram of the connection structure of the bottom chain and the anchor head chain of the offshore floating platform assembly provided by one embodiment of the present disclosure; Fig.11 The diagram is a schematic diagram of the connection structure of an anchoring device and an anchor head chain of an offshore floating platform assembly provided in one embodiment of the present disclosure.

[0018] Description of Reference Numerals 100-offshore floating platform assembly; 200-seabed; 300-sea surface; 1-platform body; 2-mooring system; 21-first mooring cable; 22-tensioner; 221-tensioner body; 222-mounting seat; 2221-mounting part; 2222-connecting part; 223-first rotating shaft; 224-second rotating shaft; 225-first plate body; 226-second plate body; 227-guide chain wheel; 23-first mooring cable group; 24-second mooring cable group; 241-universal joint; 242-second mooring cable; 2 5-first D-type shackle; 26-platform chain; 27-counterweight chain; 271-counterweight block; 272-second end ring; 273-second enlarged ring; 28-bottom chain; 281-third end ring; 282-third enlarged ring; 29-anchor chain; 291-fourth end ring; 292-fourth enlarged ring; 30-first H-type shackle; 31-second D-type shackle; 32-second H-type shackle; 33-third D-type shackle; 34-anchoring device; 341-eye plate; 35-first end ring; 36-first enlarged ring. DETAILED DESCRIPTION

[0019] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0020] In the present disclosure, unless otherwise stated, the directional words used, such as "upper" and "lower", are usually defined based on the normal working state of the offshore floating platform assembly. They are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, specific orientation structure and operation, and therefore cannot be understood as a limitation of the present disclosure. "Inside" and "outside" refer to the inside and outside of the contour of the corresponding component. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0022] In related technologies, the tensioner is generally located in the middle section of the mooring cable, about 50 meters below the water surface. During installation, professionals are required to dive into the sea to connect the tensioner to the mooring cable, which is difficult to install and construct.

[0023] In view of this, if Figures 1 to 11 As shown, the present disclosure provides an offshore floating platform assembly 100, including a platform body 1 and a mooring system 2, wherein the platform body 1 is used to float on the sea surface 300, and the mooring system 2 includes a first mooring cable 21 and a tensioner 22, wherein the first end of the first mooring cable 21 is used to be fixed to the seabed 200, and the second end of the first mooring cable 21 is passed through the tensioner 22. The tensioner 22 is installed on the platform body 1 and is located above the sea surface 300, so that the second end of the first mooring cable 21 can be passed through the tensioner 22 above the sea surface 300.

[0024] During the installation of the offshore floating platform assembly 100, the tensioner 22 can be first fixed to the platform body 1, and then the second end of the mooring cable is pulled through the tensioner 22 through the construction hull, thereby completing the connection and installation of the mooring cable and the platform body 1.

[0025] Through the above technical solution, since the tensioner 22 is installed on the platform body 1 and is located above the sea surface 300, when the tensioner 22 is connected to the first mooring line 21, the installation and connection process are both located above the sea surface 300, that is, the connection between the tensioner 22 and the first mooring line 21 can be completed by traction of the construction hull, which reduces the underwater operation part during the installation of the tensioner 22, and reduces the installation difficulty and installation cost of the tensioner 22. In addition, since the tensioner 22 is installed above the sea surface 300, when adjusting the tightness of the first mooring line 21 through the tensioner 22, it can also be operated directly above the sea surface 300, reducing the difficulty and cost of adjustment.

[0026] Alternatively, if Figure 2 As shown, the tensioner 22 may be provided with a guide sprocket 227, on which a platform chain 26 is wound, and the tensioner 22 further includes a chain stopper, which can release or limit the movement of the platform chain 26. The tensioner 22 is installed on the platform body 1, and the platform chain 26 is inserted into the tensioner 22, so as to realize the rapid adjustment of the tension of the mooring cable, increase the horizontal restoring force for the mooring system 2, and do not occupy the deck space of the platform body 1.

[0027] During the use of the tensioner 22, one end of the platform chain 26 enters the tensioner 22 from one end of the tensioner 22, and is connected to the construction vessel via the guide chain wheel 227. The construction vessel pulls the platform chain 26 to adjust the tension of the mooring line to achieve the purpose of rapid tensioning. When the platform chain 26 is tensioned and pulled, the chain stopper has no limit effect on the platform chain 26 at this time, and the platform chain 26 can pass through the tensioner 22 freely. When the platform chain 26 stops pulling, the chain stopper automatically locks the platform chain 26. If the platform chain 26 needs to pass through the tensioner 22 in the reverse direction, the chain stopper needs to be opened through the pre-installed floating bag to allow the platform chain 26 to pass.

[0028] The present disclosure does not limit the distance between the tensioner 22 and the sea surface 300. In an embodiment provided in the present disclosure, the distance between the lower end of the tensioner 22 and the sea surface 300 is greater than or equal to 10 m.

[0029] To facilitate the installation of the tensioner 22, optionally, as Figure 2 and Figure 3As shown, the tensioner 22 includes a tensioner body 221 and a mounting seat 222. The tensioner body 221 is rotatably connected to the mounting seat 222. The second end of the first mooring line 21 is passed through the tensioner body 221. The mounting seat 222 is mounted on the side wall of the platform body 1, and the upper surface of the mounting seat 222 is flush with or higher than the upper surface of the platform body 1. The upper surface of the mounting seat 222 is set to be flush with or higher than the upper surface of the platform body 1, so as to ensure that the tensioner body 221 can be set as close to the upper surface of the platform body 1 as possible, so as to be away from the sea surface 300, and ensure that the tensioner body 221 can be located above the sea surface 300 after being installed on the mounting seat 222. In addition, the upper surface of the mounting seat 222 is set to be flush with or higher than the upper surface of the platform body 1, which can also facilitate operators to approach the tensioner body 211 to operate and repair the tensioner body 221.

[0030] Furthermore, since the first end of the first mooring cable 21 is used to be fixed to the seabed 200, the platform body 1 will change position with the flow of seawater, and the second end of the first mooring cable 21 will also swing with the movement of the platform body 1. The tensioner body 221 is rotatably connected to the mounting seat 222, so that the tensioner body 221 has a higher degree of freedom when swinging with the second end of the first mooring cable 21, thereby avoiding the problem of out-of-plane bending fatigue of the first mooring cable 21 and improving the service life of the first mooring cable 21.

[0031] Alternatively, if Figure 2 As shown, the mounting seat 222 includes a mounting portion 2221 and a connecting portion 2222. The mounting portion 2221 is mounted on the side wall of the platform body 1, and the upper surface of the mounting portion 2221 is flush with or higher than the upper surface of the platform body 1. The connecting portion 2222 is rotatably connected to the mounting portion 2221 through a first rotating shaft 223. The tensioner body 221 is rotatably connected to the connecting portion 2222 through a second rotating shaft 224. The first rotating shaft 223 intersects with the second rotating shaft 224. Since the platform body 1 floats on the sea surface 300 and moves in the up-down direction, the horizontal direction, or the combined direction of the two with the flow of seawater, the tensioner body 221 can be rotatably connected to the platform body 1 in different directions through the first rotating shaft 223 and the second rotating shaft 224, which can further enrich the freedom of relative movement between the tensioner body 221 and the platform body 1, thereby reducing the deformation of the first mooring line 21 that may occur, and improving the service life of the first mooring line 21.

[0032] The present disclosure does not limit the specific structure of the mounting portion 2221. In one embodiment provided in the present disclosure, Figure 2As shown, the mounting portion 2221 may include a first plate 225 extending in the horizontal direction and two second plates 226 extending in the vertical direction, wherein the upper surface of the first plate 225 is flush with or higher than the upper surface of the platform body 1 .

[0033] One end of the two second plates 226 is connected to the first plate 225, so that the first plate 225 and the two second plates 226 together enclose an installation space. The first rotating shaft 223 is located in the installation space, and the two ends of the first rotating shaft 223 are respectively connected to the two second plates 226, and one end of the connecting part 2222 is sleeved on the first rotating shaft 223.

[0034] The first plate body 225 extending in the horizontal direction can be two spaced apart to provide support for the second plate body 226 to prevent the two second plate bodies 226 from being deformed under the pulling action of the first mooring cable 21, and the second plate body 226 can provide an installation position for the first rotating shaft 223, thereby connecting the installation portion 2221 and the first mooring cable 21 through the connecting portion 2222.

[0035] The present disclosure does not limit the range of rotation of the tensioner body 221. In one embodiment provided in the present disclosure, the first rotating shaft 223 allows the angle between the extension direction of the tensioner body 221 and the side wall of the platform body 1 located below the mounting portion 2221 to be adjusted between 20° and 90° around the axial direction of the first rotating shaft 223.

[0036] The second rotating shaft 224 enables the included angle of the extension direction of the tensioner body 221 around the axial direction of the second rotating shaft 224 to the side wall of the platform body 1 to be adjusted between 60° and 120°.

[0037] To improve the connection strength, optionally, Figure 4 , Figure 5 and Figure 6 As shown, the mooring system 2 includes a first mooring cable group 23 and a second mooring cable group 24, which are arranged around the platform body 1, the first mooring cable group 23 includes at least one first mooring cable 21 and at least one tensioner 22, and the second mooring cable group 24 includes at least one second mooring cable 242 and at least one universal joint 241. The first end of the second mooring cable 242 is used to be fixed to the seabed 200, and the second end of the second mooring cable 242 is connected to the universal joint 241 through the first D-type shackle 25.

[0038] Since one end of the first mooring cable group 23 and the second mooring cable group 24 are connected to the platform body 1, the other ends of the first mooring cable group 23 and the second mooring cable group 24 are fixed to the seabed 200, and the first mooring cable group 23 and the second mooring cable group 24 are arranged around the platform body 1, traction can be provided to the platform body 1 in different directions to prevent the platform body 1 from drifting due to the driving force from different directions.

[0039] Meanwhile, the second mooring cable group 24 includes a second mooring cable 242 and a universal joint 241. The second mooring cable 242 is connected to the platform body 1 via the universal joint 241. The universal joint 241 can provide two degrees of freedom in the horizontal direction and in the vertical direction, thereby offsetting the deflection effect of the chain.

[0040] Alternatively, if Figure 4 and Figure 5 As shown, the second mooring line 242 has a first terminal ring 35 and a first enlarged ring 36, the universal joint 241 can be directly arranged on the platform body 1, one end of the first D-type shackle 25 is connected to the universal joint 241, the other end of the first D-type shackle 25 is connected to one end of the first terminal ring 35, the other end of the first terminal ring 35 is connected to one end of the enlarged ring 36, and the other end of the first enlarged ring 36 is connected to the remaining part of the second mooring line 242. The first terminal ring 35 and the first enlarged ring 36 are located between the remaining part of the second mooring line 242 and the universal joint 241, which can play a role in adjusting and improving the anchor chain structure.

[0041] Alternatively, if Figure 6 As shown, there are two first mooring cable groups 23, and one second mooring cable group 24. The two first mooring cable groups 23 and the one second mooring cable group 24 are arranged at equal intervals around the circumference of the platform body 1. There are multiple first mooring cables 21 in each first mooring cable group 23, and multiple second mooring cables 242 in the second mooring cable group 24. The number of first mooring cables 21 in each first mooring cable group 23 is equal to the number of second mooring cables 242 in the second mooring cable group 24. The multiple first mooring cables 21 in each first mooring cable group 23 are arranged at equal intervals around the circumference of the platform body 1, and the multiple second mooring cables 242 in the second mooring cable group 24 are arranged at equal intervals around the circumference of the platform body 1.

[0042] Two first mooring cable groups 23 and one second mooring cable group 24 constitute three mooring cable groups, which are arranged at equal intervals around the circumference of the platform body 1, thereby limiting the freedom of the platform body 1 in three different directions to ensure that the platform body 1 moves within a certain range. At the same time, the three mooring cable groups are arranged at equal intervals, which can also ensure that the traction force can be evenly distributed to different mooring cable groups, preventing a single mooring cable group from being broken due to excessive force.

[0043] In different mooring cable groups, multiple first mooring cables 21 and multiple second mooring cables 242 can increase the connection strength of the first mooring cable group 23 and the second mooring cable group 24, and prevent the mooring system 2 from being separated from the platform body 1 due to excessive force. The same intervals between the multiple first mooring cables 21 and the same intervals between the multiple second mooring cables 242 can evenly distribute the tension of the platform and extend the service life of the mooring system 2.

[0044] Optionally, the number of the first mooring cable group 23 may be one, the number of the second mooring cable group 24 may be two, and the two second mooring cable groups 24 and the one first mooring cable group 23 are arranged at equal intervals around the circumference of the platform body 1. Since the second mooring cable 242 is connected to the platform body 1 through the universal joint 241, and the first mooring cable 21 is connected to the platform body 1 through the tensioner 22, and the cost of the tensioner 22 is relatively high, the number of the first mooring cable group 23 is set to one and the number of the second mooring cable groups 24 is set to two, which can reduce the number of tensioners 22, thereby reducing the cost of the mooring system 2.

[0045] The present disclosure does not limit the specific structures of the first mooring cable 21 and the second mooring cable 242. In one embodiment provided in the present disclosure, Figure 1 and Figure 8 As shown, the first mooring cable 21 and the second mooring cable 242 both include a platform chain 26, a counterweight chain 27, a bottom chain 28 and an anchor chain 29 connected in sequence, one end of the platform chain 26 of the first mooring cable 21 away from the counterweight chain 27 of the first mooring cable 21 is connected to the tensioner 22, one end of the platform chain 26 of the second mooring cable 242 away from the counterweight chain 27 of the second mooring cable 242 is connected to the universal joint 241, and one end of the anchor chain 29 away from the bottom chain 28 is fixed to the seabed 200. Among them, a plurality of counterweight blocks 271 are detachably provided on the counterweight chain 27.

[0046] The first mooring cable 21 is connected to the tensioner 22 through the platform chain 26. When the tension state of the first mooring cable 21 needs to be adjusted, the platform chain 26 can be tightened or loosened through the tensioner 22. The counterweight chain 27 and the bottom chain 28 provide sufficient weight for the first mooring cable 21 to ensure that the platform chain 26 has sufficient traction force for positioning the platform body 1 when pulling the platform body 1.

[0047] In addition, a plurality of counterweight blocks 271 are detachably provided on the counterweight chain 27, and the number of counterweight blocks 271 on the counterweight chain 27 can be adjusted according to weather conditions, seawater flow conditions or the load conditions of the platform body 1, so that the counterweight chain 27 can meet the needs for positioning the platform.

[0048] The present disclosure does not limit the detachable installation method of the counterweight block 271. In one embodiment provided in the present disclosure, a first through hole and a second through hole that are interconnected are formed on the counterweight block 271. The first through hole is used for the counterweight chain 27 to pass through. The locking bolt passes through the second through hole and the chain ring hole on the counterweight chain 27 and is connected to the locking nut located on the other side of the second through hole.

[0049] The locking bolt can pass through the chain ring holes on the counterweight block 271 and the counterweight chain 27 in sequence, so that the counterweight block 271 is detachably connected to the counterweight chain 27 through the locking bolt. At the same time, since the locking bolt is fixed to the counterweight block 271 through the locking nut and is passed through the chain ring hole of the counterweight chain 27, the counterweight block 271 is fixed at a fixed position of the counterweight chain 27, thereby preventing the counterweight block 271 from sliding along the counterweight chain 27 when the counterweight chain 27 moves, thereby affecting the counterweight effect of the counterweight chain 27.

[0050] In order to facilitate the connection between the platform chain 26, the counterweight chain 27, the bottom chain 28 and the anchor head chain 29, optionally, as Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the platform chain 26 is connected to the counterweight chain 27 via a first H-type shackle 30 , the counterweight chain 27 is connected to the bottom chain 28 via a second D-type shackle 31 , and the bottom chain 28 is connected to the anchor head chain 29 via a second H-type shackle 32 .

[0051] like Fig.11 As shown, the offshore floating platform assembly 100 further includes an anchoring device 34, which is fixed on the seabed 200, and the anchor head chain 29 is connected to the anchoring device 34 via a third D-type shackle 33. The D-type shackle and the H-type shackle are used to connect the platform chain 26, the counterweight chain 27, the bottom chain 28 and the anchor head chain 29, which facilitates the connection and disassembly between the connected anchor chains. At the same time, different types of shackles can be selected as needed. For example, the D-type shackle is used to connect the counterweight chain 27 and the bottom chain 28, which can provide a larger range of activity space for the bottom chain 28 and improve the flexibility of the connection.

[0052] Alternatively, if Fig. 9 As shown, the counterweight chain 27 has a connected second end ring 272 and a second enlarged ring 273, the bottom chain 28 has a connected third end ring 281 and a third enlarged ring 282, the two sides of the second D-type shackle 31 are respectively connected to the second end ring 272 and the third end ring 281, the other end of the second enlarged ring 273 is connected to the remaining part of the counterweight chain 27, and the third enlarged ring 282 is connected to the remaining part of the bottom chain 28.

[0053] like Fig.11As shown, the anchor chain 29 also has a fourth terminal ring 291 and a fourth enlarged ring 292, and an eye plate 341 is also provided on the anchor device 34. One end of the third D-type shackle 33 is inserted into the eye hole of the eye plate 341, and the other end of the third D-type shackle 33 is connected to the fourth enlarged ring 292, and the other end of the fourth enlarged ring 292 is connected to the fourth terminal ring 291, and the other end of the fourth terminal ring 291 is connected to the remaining part of the anchor chain 29.

[0054] It should be noted that the above-mentioned offshore floating platforms may include but are not limited to floating wind power platforms, ocean observation platforms, floating desalination devices, marine aquaculture platforms, floating docks, etc., or the above-mentioned offshore floating platforms may also be offshore floating ships, such as floating ship lifting platforms, floating ship crane platforms, etc. The present disclosure does not limit the specific type of the offshore floating platform.

[0055] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0057] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An offshore floating platform assembly, characterized in that: It comprises a platform body and a mooring system, wherein the platform body is used to float on the sea surface, and the mooring system comprises a first mooring cable and a tensioner, wherein a first end of the first mooring cable is used to be fixed to the seabed, and a second end of the first mooring cable is passed through the tensioner; Wherein, the tensioner is installed on the platform body and is located above the sea surface, so that the second end of the first mooring cable can pass through the tensioner above the sea surface.

2. The offshore floating platform assembly according to claim 1, characterized in that: The distance between the lower end of the tensioner and the sea surface is greater than or equal to 10m.

3. The offshore floating platform assembly according to claim 1, characterized in that: The tensioner includes a tensioner body and a mounting seat, the tensioner body is rotatably connected to the mounting seat, the second end of the first mooring cable is passed through the tensioner body, the mounting seat is installed on the side wall of the platform body, and the upper surface of the mounting seat is flush with or higher than the upper surface of the platform body.

4. The offshore floating platform assembly according to claim 3, characterized in that: The mounting seat includes a mounting portion and a connecting portion, the mounting portion is mounted on the side wall of the platform body, and the upper surface of the mounting portion is flush with or higher than the upper surface of the platform body, the connecting portion is rotatably connected to the mounting portion via a first rotating shaft, and the tensioner body is rotatably connected to the connecting portion via a second rotating shaft, and the first rotating shaft intersects with the second rotating shaft.

5. The offshore floating platform assembly according to claim 4, characterized in that: The first rotating shaft enables the angle between the extension direction of the tensioner body and the side wall of the platform body around the axial direction of the first rotating shaft to be adjusted between 20° and 90°; The second rotating shaft enables the included angle of the extension direction of the tensioner body around the axial direction of the second rotating shaft to the side wall of the platform body to be adjusted between 60° and 120°.

6. The offshore floating platform assembly according to any one of claims 1 to 5, characterized in that: The mooring system comprises a first mooring cable group and a second mooring cable group, wherein the first mooring cable group and the second mooring cable group are arranged around the platform body, the first mooring cable group comprises at least one first mooring cable and at least one tensioner, and the second mooring cable group comprises at least one second mooring cable and at least one universal joint; The first end of the second mooring cable is used to be fixed to the seabed, and the second end of the second mooring cable is connected to the universal joint through a first D-type shackle.

7. The offshore floating platform assembly according to claim 6, characterized in that: The number of the first mooring cable groups is two, the number of the second mooring cable group is one, and the two first mooring cable groups and the one second mooring cable group are arranged at equal intervals around the circumference of the platform body; There is a plurality of first mooring cables in each of the first mooring cable groups, and there is a plurality of second mooring cables in the second mooring cable group. The number of first mooring cables in each of the first mooring cable groups is equal to the number of second mooring cables in the second mooring cable group. The plurality of first mooring cables in each of the first mooring cable groups are equally spaced around the circumference of the platform body, and the plurality of second mooring cables in the second mooring cable group are equally spaced around the circumference of the platform body.

8. The offshore floating platform assembly according to claim 6, characterized in that: The first mooring cable and the second mooring cable each include a platform chain, a counterweight chain, a bottom chain and an anchor chain connected in sequence, one end of the platform chain of the first mooring cable away from the counterweight chain of the first mooring cable is connected to the tensioner, one end of the platform chain of the second mooring cable away from the counterweight chain of the second mooring cable is connected to the universal joint, and one end of the anchor chain away from the bottom chain is fixed to the seabed; Wherein, a plurality of counterweight blocks are detachably arranged on the counterweight chain.

9. The offshore floating platform assembly according to claim 8, characterized in that: The counterweight block is formed with a first through hole and a second through hole which are interconnected. The first through hole is used for the counterweight chain to pass through. The locking bolt passes through the second through hole and the chain ring hole on the counterweight chain and is connected to the locking nut located on the other side of the second through hole.

10. The offshore floating platform assembly according to claim 8, characterized in that: The platform chain is connected to the counterweight chain via a first H-type shackle, the counterweight chain is connected to the bottom chain via a second D-type shackle, and the bottom chain is connected to the anchor head chain via a second H-type shackle; The offshore floating platform assembly further comprises an anchoring device, which is fixed to the seabed, and the anchor head chain is connected to the anchoring device via a third D-type shackle.

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