Submarine cable anchoring device and submarine cable plugging and mounting method

Abstract

The invention relates to a submarine cable anchoring device and a submarine cable plugging and mounting method. The submarine cable anchoring device comprises an anchoring assembly, a plugging assembly, a first sealing piece and a second sealing piece. The anchoring assembly comprises a fixing cylinder and a clamping part, the fixing cylinder is used for penetrating through the submarine cable, the clamping part is detachably connected to the end of the fixing cylinder, and the clamping part is used for clamping and fixing the submarine cable. The plugging assembly comprises a plugging barrel, the plugging barrel is of a barrel structure with one end open, and the open end of the plugging barrel is detachably connected with one end of the fixed barrel. And the opening end of the plugging cylinder is used for covering the outer side of the end part of the submarine cable so as to seal the end part of the submarine cable. And the first sealing piece is arranged between the clamping part and the fixed cylinder body. The second sealing piece is arranged between the open end of the blocking barrel and the fixed barrel. Through the anchoring assembly and the plugging assembly, installation and connection of the submarine cable and the ocean platform are facilitated, when the submarine cable is put into the sea, the water tightness of the end of the submarine cable is guaranteed, and disassembly, assembly and replacement are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of marine engineering, and in particular to a submarine cable anchoring device and a submarine cable sealing and installation method. Background Art

[0002] my country is rich in offshore resources, including not only traditional oil and gas resources and petroleum and petrochemical projects, but also offshore wind power resources and offshore photovoltaic projects whose development and utilization have been increasing in recent years.

[0003] With the continuous improvement of offshore wind power development and offshore photovoltaic utilization, marine engineering structures such as drilling platforms, production platforms, wind turbine pile foundation platforms, offshore booster stations and offshore converter stations, as well as offshore photovoltaic platforms have emerged accordingly. The operation of various types of platforms requires electrical energy. For example, drilling platforms and production platforms require the input of electricity, wind turbine pile foundation platforms are the output of electricity, and offshore booster stations and offshore converter stations have both the input and output of electricity. The input and output of electricity for various types of platforms operating at sea are usually carried out through submarine cables, so the connection between submarine cables and platforms has become the research focus of marine engineering structures. Summary of the invention

[0004] One purpose of the present invention is to solve the connection problem between a submarine cable and a platform and to provide a submarine cable anchoring device. The present invention adopts the following technical solutions:

[0005] A submarine cable anchoring device, comprising:

[0006] The anchor assembly comprises a fixed cylinder and a clamping part, wherein the fixed cylinder is used for threading the submarine cable, and the clamping part is detachably connected to the end of the fixed cylinder, and the clamping part is used for clamping and fixing the submarine cable;

[0007] The plugging assembly comprises a plugging cylinder, which is a cylinder structure with an open end, the open end of the plugging cylinder is detachably connected to one end of the fixed cylinder, and the open end of the plugging cylinder is used to cover the outer side of the end of the submarine cable to seal the end of the submarine cable;

[0008] A first sealing member, which is disposed between the clamping portion and the fixed cylinder;

[0009] The second sealing member is arranged between the open end of the blocking cylinder and the fixed cylinder.

[0010] In one implementation, the anchor assembly includes a first connection portion, which is fixedly disposed on an outer peripheral side wall of an end portion of the fixed cylinder, and the first connection portion is detachably connected to the clamping portion.

[0011] In one implementation, a first connection hole is provided through the first connection portion, and a second connection hole is provided on the clamping portion corresponding to the first connection hole. Both the first connection hole and the second connection hole are used for passing a fastener.

[0012] In one implementation, the plugging assembly includes a second connecting portion, which is fixedly disposed on an outer peripheral side wall of an open end of the plugging cylinder, and a third connecting hole is disposed on the second connecting portion corresponding to the first connecting hole.

[0013] In one implementation, the plugging assembly further includes a lifting ear structure, which is fixed on the outer surface of the end of the plugging cylinder away from the opening thereof.

[0014] In one implementation, the clamping portion includes a first clamping block and a second clamping block. The first clamping block and the second clamping block are assembled relative to each other to enclose a clamping opening, and the inner diameter of the clamping opening matches the outer diameter of the submarine cable.

[0015] In one implementation, the submarine cable anchoring device also includes a supporting assembly, which is arranged on the platform body of the marine platform. The supporting assembly is provided with a limiting portion, which is used to limit and fix the fixing cylinder so that the submarine cable is fixedly installed on the platform body.

[0016] In one implementation, the support assembly includes a support cylinder arranged in a vertical direction, the bottom end of the support cylinder is fixedly connected to the platform body, and a through hole for the anchor assembly and the plugging assembly to pass through is provided inside the support cylinder;

[0017] The limiting part is detachably connected to the top end of the supporting cylinder and is provided with a limiting hole matching the outer diameter of the fixed cylinder;

[0018] A third sealing member is provided between the limiting portion and the top end of the supporting cylinder.

[0019] In one implementation, a first clamping plate is provided on the outer peripheral side wall of the fixed cylinder, and a step surface is formed between the first clamping plate and the outer peripheral side wall of the fixed cylinder. The step surface can fit with the surface of the limiting portion away from the supporting cylinder.

[0020] In one implementation, a second clamping plate is further provided on the outer peripheral side wall of the fixed cylinder, and the second clamping plate is arranged opposite to the first clamping plate. The first clamping plate and the second clamping plate can respectively fit with two opposite surfaces of the limiting part in the vertical direction.

[0021] In one implementation, the limiting portion includes a first limiting block and a second limiting block, and the first limiting block and the second limiting block are assembled relative to each other to enclose and form a limiting hole.

[0022] In one embodiment, the support assembly includes a third connecting portion, which is fixedly disposed on the outer peripheral side wall at the top end of the support cylinder, and a fourth connecting hole is penetrated through the third connecting portion, and a fifth connecting hole is provided on the limiting portion corresponding to the fourth connecting hole, and both the fourth connecting hole and the fifth connecting hole are used for passing fasteners.

[0023] Another object of the present invention is to provide a method for plugging a submarine cable, which is implemented by using any of the above-mentioned submarine cable anchoring devices, and the plugging method comprises:

[0024] Pass the submarine cable through the fixed cylinder;

[0025] The clamping part is clamped on the outer periphery of the submarine cable and fixedly connected to the fixed cylinder;

[0026] The open end of the blocking cylinder is covered on the exposed end of the submarine cable, and the open end of the blocking cylinder is fixedly connected to the fixed cylinder to complete the blocking of the submarine cable.

[0027] In one embodiment, after the plugging of the submarine cable is completed, the method further comprises:

[0028] Connect the plugging cylinder to the external traction equipment, use the external traction equipment to pull the submarine cable to the platform body, fix the submarine cable anchoring device to the platform body, and complete the installation of the submarine cable and the platform body.

[0029] Another object of the present invention is to provide a method for installing a submarine cable, which is implemented by using any of the submarine cable anchoring devices described above, and the installation method comprises:

[0030] Pass the submarine cable through the fixed cylinder;

[0031] The clamping part is clamped on the outer periphery of the submarine cable and fixedly connected to the fixed cylinder;

[0032] The open end of the blocking cylinder is covered on the exposed end of the submarine cable, and the open end of the blocking cylinder is fixedly connected to the fixed cylinder;

[0033] Connect the plugging cylinder to the external traction equipment, use the external traction equipment to pull the submarine cable to the platform body, and use the limiting part to limit the installation of the fixed cylinder to complete the installation of the submarine cable and the platform body.

[0034] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects:

[0035] In the present invention, the submarine cable anchoring device includes an anchoring assembly, a plugging assembly, a first seal and a second seal. The anchoring assembly can be used to fix the submarine cable, and the plugging assembly can be used to seal the end of the submarine cable, which is conducive to the installation and connection of the submarine cable with the marine platform, and when the submarine cable is lowered into the sea, the watertightness of the end of the submarine cable is ensured. The anchoring assembly and the plugging assembly have simple structures and are easy to assemble; and the fixing of the submarine cable by the anchoring assembly and the sealing of the end of the submarine cable by the plugging assembly are both detachable, which is conducive to the disassembly of the submarine cable and the marine platform, and is convenient for the replacement of the easily consumable parts in the anchoring assembly and the plugging assembly, such as the first seal and the second seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a reference schematic diagram of the use of a submarine cable anchoring device according to an embodiment of the present invention.

[0037] Figure 2 yes Figure 1 Schematic diagram of the structure shown viewed along direction A.

[0038] Figure 3 It is a schematic structural diagram of the connection between the anchoring assembly of a submarine cable anchoring device and a submarine cable according to an embodiment of the present invention.

[0039] Figure 4 It is a structural schematic diagram of the connection between an anchoring assembly and a plugging assembly of a submarine cable anchoring device according to an embodiment of the present invention.

[0040] Figure 5 It is a structural schematic diagram of the connection between an anchoring assembly, a plugging assembly and a supporting assembly of a submarine cable anchoring device according to an embodiment of the present invention.

[0041] Figure 6 The figure is a flow chart of a method for sealing a submarine cable according to an embodiment of the present invention.

[0042] Figure 7 The figure is a flow chart of a method for installing a submarine cable according to an embodiment of the present invention.

[0043] The following are the descriptions of the reference numerals:

[0044] 10- platform body; 20- submarine cable; 30- installation platform; 40- crane; 50- junction box;

[0045] 100-anchor assembly;

[0046] 110 - fixed cylinder; 111 - first connecting portion; 112 - first connecting hole; 113 - first clamping plate; 114 - second clamping plate;

[0047] 120-clamping portion; 121-second connecting hole; 122-clamping opening;

[0048] 200- plugging component;

[0049] 210 - blocking cylinder; 211 - second connecting portion; 212 - third connecting hole;

[0050] 220- hanging ear structure;

[0051] 300-support assembly;

[0052] 310-support cylinder; 311-through hole; 312-third connecting portion; 313-fourth connecting hole;

[0053] 320-limiting portion; 321-limiting hole; 322-fifth connecting hole;

[0054] 400 - first sealing member; 500 - second sealing member; 600 - third sealing member. DETAILED DESCRIPTION

[0055] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0056] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indications of directions or positional relationships (such as up, down, left, right, front and back, etc.) are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0058] See also Figure 1 and Figure 2 As shown, the submarine cable anchoring device proposed in the present invention is used to fix one end of the submarine cable 20 to the platform body 10 of the offshore platform so that the core wire of the submarine cable 20 can be connected to the junction box 50 of the offshore platform, thereby realizing the input and output of power of the offshore platform.

[0059] The platform body 10 may be a steel watertight buoyant body. The platform body 10 may be provided with an installation platform 30 for the submarine cable 20. Figure 1 As shown, the installation platform 30 may be located at the tail of the platform body 10. The installation platform 30 may be welded to the stern cover plate of the platform body 10. The installation platform 30 is mainly used for the installation of the submarine cable anchoring device, which is convenient for the installation personnel to pass through.

[0060] See also Figure 1 As shown, the submarine cable anchoring device according to the embodiment of the present invention comprises an anchoring assembly 100, a plugging assembly 200, a supporting assembly 300 and a sealing assembly (not shown).

[0061] like Figure 3 As shown, the anchor assembly 100 includes a fixed cylinder 110, which is used to thread the submarine cable 20. The fixed cylinder 110 can preferably use a steel pipe structure, which has high structural strength, can resist seawater corrosion, is easy to obtain, and has low cost.

[0062] For example, the fixed cylinder 110 may be a cylindrical structure. The inner wall of the fixed cylinder 110 may form a perforation that matches the outer circumference of the submarine cable 20. The perforation that matches the outer circumference of the submarine cable 20 may mean that the inner diameter of the perforation is slightly larger than the outer diameter of the submarine cable 20, and the cross-sectional shape of the perforation is consistent with the cross-sectional shape of the submarine cable 20. Thus, the perforation allows the submarine cable 20 to pass through, and the outer circumference of the submarine cable 20 and the inner wall of the fixed cylinder 110 can fit each other, so that the fixed cylinder 110 can reliably limit and fix the submarine cable 20 in the circumferential direction of the submarine cable 20, which is conducive to reliably installing the submarine cable 20 on the offshore platform.

[0063] like Figure 1 As shown, the anchor assembly 100 further includes a clamping portion 120 detachably connected to the end of the fixing cylinder 110, and the clamping portion 120 is used to clamp and fix the submarine cable 20. In this embodiment, the clamping portion 120 is clamped on the outer periphery of the submarine cable 20, and the clamping portion 120 is detachably connected to the fixing cylinder 110, so that the anchor assembly 100 can reliably fix the submarine cable 20 in the axial direction of the submarine cable 20, thereby facilitating the reliable installation of the submarine cable 20 on the offshore platform.

[0064] See also Figure 1In one implementation, the clamping portion 120 may include a first clamping block and a second clamping block, and the first clamping block and the second clamping block are assembled relative to each other to enclose a clamping opening 122, and the inner diameter of the clamping opening 122 matches the outer diameter of the submarine cable 20. In this embodiment, the inner diameter of the clamping opening 122 matches the outer diameter of the submarine cable 20, specifically referring to that the inner diameter size of the clamping opening 122 and the outer diameter size of the submarine cable 20 tend to be the same. Preferably, the matching relationship between the inner diameter size of the clamping opening 122 and the outer diameter size of the submarine cable 20 is an interference fit, so that the clamping opening 122 and the submarine cable 20 cannot move relative to each other, ensuring that the clamping portion 120 holds and fixes the submarine cable 20 tightly.

[0065] For example, the first clamping block may be in the form of a semicircular plate-shaped structure, and its inner ring surface is an arc surface that matches the outer circumference of the submarine cable 20. The second clamping block may be in the form of a semicircular plate-shaped structure, and its inner ring surface is an arc surface that matches the outer circumference of the submarine cable 20. The first clamping block and the second clamping block may be connected to form a circular ring structure. The inner ring surface of the first clamping block and the inner ring surface of the second clamping block may form a complete circular clamping opening 122.

[0066] In the embodiment of the present application, the first clamp block and the second clamp block may both be semicircular plate-shaped structures. However, the present application is not limited thereto. In other embodiments, it is sufficient to ensure that the first clamp block and the second clamp block can form a clamping opening 122 that matches the outer circumference of the submarine cable 20 when they are connected. The present application does not specifically limit the overall appearance of the first clamp block and the second clamp block.

[0067] In the embodiment of the present application, the clamping portion 120 includes a first clamping block and a second clamping block which are relatively assembled. However, the present application is not limited thereto. In other embodiments, the structural form of the clamping portion 120 may be determined according to specific circumstances. For example, the clamping portion 120 may include three arc-shaped blocks connected end to end in sequence, and the three arc-shaped blocks may form a circular ring structure that is clamped and fixed to the outer circumference of the submarine cable 20.

[0068] In the embodiment of the present application, the first clamp block and the second clamp block may be detachably fixedly connected to each other. Alternatively, the first clamp block and the second clamp block may not be directly connected, but when the first clamp block and the second clamp block are respectively fixed to the ends of the fixed cylinder 100, the first clamp block and the second clamp block are relatively fixed and assembled together to form the clamping portion 120.

[0069] In the embodiment of the present application, the clamping portion 120 may be connected to at least one end of the fixed cylinder 110. That is, the number of the clamping portion 120 is at least one. Figure 3In one embodiment, the number of the clamping parts 120 is two. The two clamping parts 120 are detachably connected to the two ends of the fixed cylinder 110. When the submarine cable 20 passes through one end of the fixed cylinder 110 and passes through the other end, the two clamping parts 120 can clamp and fix the submarine cable 20 from the two ends of the fixed cylinder 110, thereby ensuring that the connection between the submarine cable 20 and the fixed cylinder 110 in the axial direction of the submarine cable 20 is reliable, improving the reliability of the anchor assembly 100 fixing the submarine cable 20, and preventing the submarine cable 20 from coming out of the fixed cylinder 110.

[0070] Of course, in other embodiments, the number of the clamping portion 120 may also be one.

[0071] In the embodiment of the present application, the clamping portion 120 is detachably connected to the end of the fixed cylinder 110. Figure 3 As shown, in one implementation, the anchor assembly 100 includes a first connection portion 111, which is fixedly arranged on the outer peripheral side wall of the end of the fixed cylinder 110, and the first connection portion 111 is detachably connected to the clamping portion 120. The first connection portion 111 and the fixed cylinder 110 can be connected by welding. In this embodiment, by providing the first connection portion 111, the connection between the clamping portion 120 and the fixed cylinder 110 can be facilitated.

[0072] For example, the first connecting portion 111 may be a circular steel plate structure. The radial dimension of the inner ring surface of the circular steel plate matches the radial dimension of the outer circumference of the fixed cylinder 110. Specifically, the radial dimension of the inner ring surface of the circular steel plate is slightly larger than the radial dimension of the outer circumference of the fixed cylinder 110. The circular steel plate may be mounted on the outer circumferential side wall of the end of the fixed cylinder 110, and then the two are welded and fixed.

[0073] Alternatively, the first connection portion 111 may also include a plurality of lugs protruding from the outer peripheral side wall of the end of the fixed cylinder 110. The plurality of lugs may be detachably connected to the clamping portion 120 respectively.

[0074] like Figure 3 As shown, in one implementation, the first connection portion 111 and the clamping portion 120 can be detachably connected in a manner that: a first connection hole 112 is provided through the first connection portion 111, and a second connection hole 121 is provided on the clamping portion 120 corresponding to the first connection hole 112, and both the first connection hole 112 and the second connection hole 121 are used to pass fasteners. The first connection hole 112 can be a threaded hole. The second connection hole 121 can be a threaded hole. The fastener can be a bolt.

[0075] In other embodiments, the first connection hole 112 may also be a pin hole, the second connection hole 121 may be a pin hole, and the fastener may be a pin.

[0076] In order to prevent external seawater from entering the interior of the fixed cylinder 110, Figure 3 As shown, in one embodiment, the sealing assembly includes a first sealing member 400, and the first sealing member 400 is arranged between the clamping portion 120 and the fixed cylinder 110. Specifically, the first sealing member 400 is arranged between the clamping portion 120 and the first connecting portion 111. The first sealing member 400 can be an annular waterproof gasket. When the clamping portion 120 is connected to the first connecting portion 111, the first sealing member 400 can seal the gap between the clamping portion 120 and the first connecting portion 111 to prevent seawater and the like from entering the fixed cylinder 110.

[0077] See also Figure 4 As shown, the plugging assembly 200 includes a plugging cylinder 210, which is a cylinder structure with an open end. The plugging cylinder 210 can be made of seawater corrosion-resistant steel as a whole. For example, the plugging cylinder 210 can include a steel pipe and a steel plate welded and fixed to one end of the steel pipe. The steel plate is used to close one end of the steel pipe, and the other end of the steel pipe is open. Thus, the steel pipe and the steel plate can form a plugging cylinder 210 with a hollow interior and an open end.

[0078] like Figure 4 As shown, the open end of the blocking cylinder 210 is detachably connected to one end of the fixed cylinder 110. When the two are relatively fixed, the open end of the blocking cylinder 210 can be covered on the outside of the end of the submarine cable 20 to seal the end of the submarine cable 20. In this embodiment, when the submarine cable 20 passes through one end of the fixed cylinder 110 and passes through the other end, and the submarine cable 20 is clamped and fixed by the clamping part 120, the end of the submarine cable 20 is exposed. The blocking cylinder 210 is mainly used to cooperate with the fixed cylinder 110 to seal the exposed end of the submarine cable 20.

[0079] See also Figure 4 In one implementation, the plugging assembly 200 includes a second connection portion 211, which is fixedly disposed on the outer peripheral side wall of the opening end of the plugging cylinder 210. The second connection portion 211 and the plugging cylinder 210 can be connected by welding. In this embodiment, the second connection portion 211 is used to achieve a reliable and detachable fixed connection between the plugging cylinder 210 and the fixed cylinder 110.

[0080] For example, the second connecting portion 211 may be a circular steel plate structure. The radial dimension of the inner ring surface of the circular steel plate matches the radial dimension of the outer peripheral surface of the plugging cylinder 210. Specifically, the radial dimension of the inner ring surface of the circular steel plate is slightly larger than the radial dimension of the outer peripheral surface of the plugging cylinder 210. The circular steel plate may be mounted on the outer peripheral side wall of the opening end of the plugging cylinder 210, and then the two are welded and fixed.

[0081] like Figure 4As shown, in one embodiment, a third connection hole 212 is provided on the second connection portion 211 corresponding to the first connection hole 112. The third connection hole 212 is used to pass a fastener. Among them, the third connection hole 212 can be a threaded hole. In this embodiment, since the third connection hole 212 is provided corresponding to the first connection hole 112, and the second connection hole 121 is provided corresponding to the first connection hole 112, in other words, the third connection hole 212 and the corresponding first connection hole 112 and second connection hole 121 are coaxially arranged. Therefore, when connecting the blocking cylinder 210 with the fixed cylinder 110, fasteners can be used to pass through the third connection hole 212 and the corresponding second connection hole 121 and the first connection hole 112 in sequence, so as to simultaneously realize the detachable connection between the blocking cylinder 210 and the fixed cylinder 110 and the detachable connection between the clamping portion 120 and the fixed cylinder 110, thereby greatly simplifying the assembly process.

[0082] In the present application, when the plugging assembly 200 and the anchoring assembly 100 are assembled, when the submarine cable 20 is inserted from one end of the fixed cylinder 110 and passed out from the other end, and the submarine cable 20 is clamped and fixed by the clamping part 120, the open end of the plugging cylinder 210 is covered on the end of the fixed cylinder 110, so that the second connecting part 211 is opposite to the first connecting part 111 and the clamping part 120 at the end of the fixed cylinder 110. Since the third connecting hole 212 is coaxial with the corresponding second connecting hole 121 and the first connecting hole 112, the fastener can be sequentially inserted into the third connecting hole 212 and the corresponding second connecting hole 121 and the first connecting hole 112 to simultaneously realize the detachable connection between the plugging cylinder 210 and the fixed cylinder 110 and the detachable connection between the clamping part 120 and the fixed cylinder 110.

[0083] In order to prevent external seawater from entering the fixed cylinder 110 and the blocking cylinder 210, see Figure 4 In one embodiment, the sealing assembly further comprises a second sealing member 500, which is disposed between the open end of the blocking cylinder 210 and the fixed cylinder 110. Specifically, the second sealing member 500 is disposed between the clamping portion 120 and the second connecting portion 211. The second sealing member 500 may be an annular waterproof gasket. When the second connecting portion 211 is connected to the fixed cylinder 110 through the clamping portion 120, the second sealing member 500 may seal the gap between the second connecting portion 211 and the clamping portion 120 to prevent seawater and the like from entering the blocking cylinder 210 and the fixed cylinder 110.

[0084] In the embodiment of the present application, another main function of the blocking cylinder 210 is to connect with an external traction device. Figure 4As shown, in one implementation, the plugging assembly 200 further includes a lifting ear structure 220, which is fixedly mounted on the outer surface of the end of the plugging cylinder 210 away from its opening. The lifting ear structure 220 may be a lifting ear steel plate, and a lifting ear hole is formed through the lifting ear steel plate. The lifting ear hole is used to connect with an external traction device. For example, the external traction device may be a crane 40 on an offshore platform.

[0085] In this embodiment, by providing a lifting ear structure 220, it is convenient to connect the submarine cable anchoring device with an external traction device, so that the external traction device can drive the submarine cable anchoring device to move to achieve traction of the submarine cable 20, thereby facilitating the installation and connection of the submarine cable 20 with the offshore platform, or lowering the submarine cable 20 from the offshore platform into the sea.

[0086] In the present application, the anchor assembly 100 can be used to fix the submarine cable 20, and the plugging assembly 200 can be used to seal the end of the submarine cable 20, which is conducive to the installation and connection of the submarine cable 20 with the marine platform, and when the submarine cable 20 is lowered into the sea, the watertightness of the end of the submarine cable 20 is ensured. The anchor assembly 100 and the plugging assembly 200 have simple structures and are easy to assemble; and the anchor assembly 100 fixes the submarine cable 20 and the plugging assembly 200 seals the end of the submarine cable 20, which is conducive to the disassembly of the submarine cable 20 and the marine platform, and is convenient for the replacement of the consumable parts in the anchor assembly 100 and the plugging assembly 200, such as the first seal 400, the second seal 500, etc.

[0087] See also Figure 1 In the embodiment of the present application, the support assembly 300 is arranged on the platform body 10 of the marine platform. The support assembly 300 is mainly used to support and fix the anchor assembly 100 so that the anchor assembly 100 can be reliably fixed on the platform body 10, thereby ensuring the reliable installation of the submarine cable 20 and the marine platform.

[0088] like Figure 1 and Figure 5 As shown, in one implementation, the support assembly 300 includes a support cylinder 310 arranged vertically, and the bottom end of the support cylinder 310 is fixedly connected to the platform body 10. Specifically, the bottom end of the support cylinder 310 is welded and fixed to the stern cover plate of the platform body 10. The mounting platform 30 is provided with a mounting hole for accommodating and mounting the support cylinder 310.

[0089] Among them, the support cylinder 310 can preferably use a steel pipe structure, which has a high structural strength, is resistant to seawater corrosion, is easy to obtain, and has a low cost. For example, the support cylinder 310 can be a cylindrical tube. The inner wall of the support cylinder 310 can form a through hole 311 for the anchor assembly 100 and the plugging assembly 200 to pass through. Specifically, the inner diameter of the through hole 311 is larger than the radial dimension of the circumferential outer contour of the anchor assembly 100, and is larger than the radial dimension of the circumferential outer contour of the plugging assembly 200. Among them, the circumferential outer contour of the anchor assembly 100 can be the outer circumferential surface contour of its first connecting portion 111 and the clamping portion 120. The circumferential outer contour of the plugging assembly 200 can be the outer circumferential surface contour of its second connecting portion 211.

[0090] like Figure 5 As shown, the support assembly 300 is provided with a limiting portion 320, which is used to limit and fix the fixed cylinder 110 so that the submarine cable 20 can be fixedly installed on the platform body 10. In one embodiment, the limiting portion 320 is detachably connected to the top of the supporting cylinder 310, and is provided with a limiting hole 321 that matches the outer diameter of the fixed cylinder 110. Specifically, the matching of the limiting hole 321 with the outer diameter of the fixed cylinder 110 can be that the inner diameter of the limiting hole 321 is slightly larger than the outer diameter of the fixed cylinder 110, and the cross-sectional shape of the limiting hole 321 is consistent with the cross-sectional shape of the fixed cylinder 110. When the limiting portion 320 is fixed to the end of the supporting cylinder 310, the hole wall of the limiting hole 321 can be attached to the outer peripheral side wall of the fixed cylinder 110.

[0091] In this embodiment, the support cylinder 310 is arranged vertically, and its internal through hole 311 is used for the anchor assembly 100 and the plugging assembly 200 to pass through. When the anchor assembly 100 and the plugging assembly 200 pass through the support cylinder 310 with the submarine cable 20, the limiting portion 320 is fixed to the top of the support cylinder 310. Since the hole wall of the limiting hole 321 can abut against the outer peripheral side wall of the fixed cylinder 110, the fixed cylinder 110 can be reliably limited and fixed in the horizontal direction through the limiting portion 320.

[0092] In addition, the limiting and fixing of the fixed cylinder 110 by the limiting portion 320 in the vertical direction can be achieved through an adapting structure provided on the limiting portion 320 and the outer peripheral side wall of the fixed cylinder 110 .

[0093] like Figure 5As shown, in one embodiment, a first clamping plate 113 is provided on the outer peripheral side wall of the fixed cylinder 110, and a step surface can be formed between the first clamping plate 113 and the outer peripheral side wall of the fixed cylinder 110. When the limiting portion 320 is fixed to the top of the supporting cylinder 310, the upper surface of the limiting portion 320 can fit with the step surface, so that the limiting portion 320 can support the first clamping plate 113 upward, so that the fixed cylinder 110 cannot fall out of the supporting cylinder 310 downward, thereby realizing the limiting fixation of the fixed cylinder 110 in the vertical direction.

[0094] Furthermore, in one implementation, a second clamping plate 114 is further provided on the outer peripheral side wall of the fixed cylinder 110, and the second clamping plate 114 is arranged opposite to the first clamping plate 113. When the limiting portion 320 is fixed to the top of the supporting cylinder 310, the first clamping plate 113 and the second clamping plate 114 can respectively fit with the upper and lower surfaces of the limiting portion 320. Thus, the limiting portion 320 can not only support the first clamping plate 113 upward, but also abut against the second clamping plate 114 downward, so that the fixed cylinder 110 can neither escape downward from the supporting cylinder 310 nor move upward relative to the supporting cylinder 310, thereby ensuring that the fixed cylinder 110 is fixed in the vertical position relative to the supporting cylinder 310, and improving the reliability of the upper limit of the fixed cylinder 110 in the vertical direction.

[0095] Alternatively, in other embodiments, the first clamping plate 113 and the second clamping plate 114 may be omitted. For example, the fixing cylinder 110 cannot be disengaged downward from the supporting cylinder 310 by the stopper 320 abutting against the first connecting portion 111 at the end of the fixing cylinder 110, thereby achieving the vertical limit fixation of the fixing cylinder 110.

[0096] See also Figure 5 , the structural form of the limiting portion 320 can be various. In one embodiment, the limiting portion 320 includes a first limiting block and a second limiting block, and the first limiting block and the second limiting block are assembled relative to each other to enclose a limiting hole 321. For example, the first limiting block can be a semicircular ring-shaped plate structure as a whole, and its inner ring surface is an arc surface that matches the outer periphery of the fixed cylinder 110. The second limiting block can be a semicircular ring-shaped plate structure as a whole, and its inner ring surface is an arc surface that matches the outer periphery of the fixed cylinder 110. The first limiting block and the second limiting block are connected to form a circular ring structure. The inner ring surface of the first limiting block and the inner ring surface of the second limiting block can form a complete circular limiting hole 321.

[0097] In the embodiment of the present application, the first limit block and the second limit block can both be semicircular plate-shaped structures. However, the present application is not limited thereto. In other embodiments, it is sufficient to ensure that the first limit block and the second limit block can form a limit hole 321 that matches the outer circumference of the fixed cylinder 110 when they are connected. The present application does not specifically limit the overall appearance of the first limit block and the second limit block.

[0098] In the embodiment of the present application, the limiting portion 320 includes a first limiting block and a second limiting block which are relatively assembled. However, the present application is not limited thereto. In other embodiments, the structural form of the limiting portion 320 may be determined according to specific circumstances. For example, the limiting portion 320 may include three arc-shaped blocks connected end to end in sequence, and the three arc-shaped blocks may form a circular ring structure that fits the outer circumference of the fixed cylinder 110.

[0099] In the embodiment of the present application, the first limit block and the second limit block may be detachably fixedly connected to each other. Alternatively, the first limit block and the second limit block may not be directly connected, but when the first limit block and the second limit block are respectively fixed to the ends of the support cylinder 310, the first limit block and the second limit block are relatively fixed and assembled together to form the limit portion 320.

[0100] See also Figure 5 As shown, the limiting portion 320 can be detachably connected to the top of the support cylinder 310 in various ways. In one implementation, the support assembly 300 includes a third connecting portion 312, which is fixedly disposed on the outer peripheral side wall of the top of the support cylinder 310. The third connecting portion 312 and the support cylinder 310 can be connected by welding.

[0101] For example, the third connecting portion 312 may be a circular steel plate structure. The radial dimension of the inner ring surface of the circular steel plate matches the radial dimension of the outer peripheral surface of the support cylinder 310. Specifically, the radial dimension of the inner ring surface of the circular steel plate is slightly larger than the radial dimension of the outer peripheral surface of the support cylinder 310. The circular steel plate may be mounted on the outer peripheral side wall of the end of the support cylinder 310, and then the two are welded and fixed.

[0102] Furthermore, a fourth connection hole 313 is provided through the third connection portion 312, and a fifth connection hole 322 is provided on the limiting portion 320 corresponding to the fourth connection hole 313, and both the fourth connection hole 313 and the fifth connection hole 322 are used to pass fasteners. The fourth connection hole 313 may be a threaded hole. The fifth connection hole 322 may be a threaded hole. The fastener may be a bolt.

[0103] In order to prevent external seawater from entering the interior of the support cylinder 310, in one embodiment, the sealing assembly further includes a third sealing member 600, which is disposed between the limiting portion 320 and the top end of the support cylinder 310. Specifically, the third sealing member 600 is disposed between the limiting portion 320 and the third connecting portion 312. The third sealing member 600 may be an annular waterproof gasket. When the limiting portion 320 is connected to the third connecting portion 312, the third sealing member 600 may seal the gap between the limiting portion 320 and the third connecting portion 312 to prevent seawater and the like from entering the support cylinder 310.

[0104] In the embodiment of the present application, the installation connection between the submarine cable 20 and the marine platform can be realized by the support assembly 300 limiting and fixing the anchor assembly 100. The support assembly 300 has a simple structure, and its limiting portion 320 can be easily disassembled, so that the installation and disassembly process between the submarine cable 20 and the marine platform is simpler and faster, which is conducive to saving time and labor.

[0105] However, the present application is not limited thereto. In other embodiments, the support assembly 300 may be omitted, and the anchor assembly 100 may be directly and detachably fixedly connected to the platform body 10, depending on the specific circumstances.

[0106] See also Figure 6 An embodiment of the present invention further provides a method for plugging a submarine cable, which is implemented by using the above-mentioned submarine cable anchoring device. The plugging method comprises:

[0107] S10, insert the submarine cable 20 into the fixed cylinder 110. Specifically, the submarine cable 20 is inserted from one end of the fixed cylinder 110 and exits from the other end. The end of the submarine cable 20 may exceed the end surface of the fixed cylinder 110 by a certain distance, so that the clamping part 120 can clamp and fix the submarine cable 20 at the end of the fixed cylinder 110 during subsequent assembly.

[0108] S20, clamp the clamping part 120 around the outer periphery of the submarine cable 20 and fix it with the fixed cylinder 110. Specifically, the clamping part 120 can be used at both ends of the fixed cylinder 110 to clamp and fix the submarine cable 20. When the clamping part 120 is connected to the fixed cylinder 110, a first sealing member 400 can be sandwiched between the two to seal the gap between the two. It can be understood that when the clamping part 120 completes the clamping and fixing of the submarine cable 20, the end of the submarine cable 20 is still exposed.

[0109] S30, cover the open end of the plugging cylinder 210 at the exposed end of the submarine cable 20, and fix the open end of the plugging cylinder 210 to the fixed cylinder 110 to complete the plugging of the submarine cable 20. When the plugging cylinder 210 is connected to the fixed cylinder 110, a second sealing member 500 may be sandwiched between the two to seal the gap between the two.

[0110] In the implementation of the present application, the fixing of the submarine cable 20 and the sealing of the exposed end of the submarine cable 20 can be achieved through the detachable connection between the sealing assembly 200 and the anchoring assembly 100, and the operation is simple, and it is convenient for assembly and disassembly, which is beneficial to the rapid installation and disassembly of the submarine cable 20 and the offshore platform, and when the submarine cable 20 is lowered into the sea, the watertightness of the end of the submarine cable 20 is ensured.

[0111] like Figure 6As shown, in one embodiment, after completing the plugging of the submarine cable 20, it also includes:

[0112] S40, connect the plugging cylinder 210 to the external traction equipment, pull the submarine cable 20 to the platform body 10 through the external traction equipment, fix the submarine cable anchoring device to the platform body 10, and complete the installation of the submarine cable 20 and the platform body 10. The fixing between the submarine cable anchoring device of the present application and the platform body 10 can be achieved by setting a corresponding adapter structure on the platform body 10. For example, the aforementioned support assembly 300. Alternatively, the submarine cable anchoring device of the present application can also be directly fixed to the platform body 10 by tying with cables or the like.

[0113] See also Figure 7 An embodiment of the present invention further provides a method for installing a submarine cable 20, which is implemented by using the above-mentioned submarine cable anchoring device. In the installation method of this embodiment, the submarine cable anchoring device is to install the submarine cable 20 and the platform body 10 by arranging a support assembly 300 on the platform body 10 and cooperating with the anchoring assembly 100. Specifically, the fixing cylinder 110 is limited and fixed by the detachable connection between the limiting part 320 and the supporting cylinder 310.

[0114] Specifically, the installation method includes:

[0115] S100 , inserting the submarine cable 20 into the fixed cylinder 110 .

[0116] S200 , clamping the clamping part 120 on the outer circumference of the submarine cable 20 and fixing it to the fixing cylinder 110 .

[0117] S300 , cover the open end of the sealing cylinder 210 at the exposed end of the submarine cable 20 , and fix the open end of the sealing cylinder 210 to the fixed cylinder 110 .

[0118] S400, connect the blocking cylinder 210 to the external traction equipment, use the external traction equipment to pull the submarine cable 20 to the platform body 10, and use the limiting part 320 to limit the installation of the fixing cylinder 110, thus completing the installation of the submarine cable 20 and the platform body 10.

[0119] Based on the above technical scheme, when the submarine cable anchoring device and the sealing and installation method of the submarine cable of the embodiment of the present application are implemented, when it is necessary to connect the submarine cable 20 to the platform body 10, the submarine cable 20 is fixed and sealed by connecting the fixing cylinder 110 and the sealing cylinder 210.

[0120] See also Figure 1 and Figure 2, connect the plugging cylinder 210 to the crane 40, the crane 40 lifts the submarine cable 20 floating on the sea surface to the height above the main deck of the platform body 10, and makes the submarine cable 20 pass through the supporting cylinder 310 to the position above the top of the supporting cylinder 310, and use the limiting part 320 to clamp between the first clamping plate 113 and the second clamping plate 114 of the fixing cylinder 110, and then fix the limiting part 320 with the third connecting part 312 at the top of the supporting cylinder 310, so as to complete the installation and fixation of the submarine cable 20 and the platform body 10. After that, remove the connection between the plugging cylinder 210 and the fixing cylinder 110 to expose the end of the submarine cable 20. Finally, connect the core wire of the submarine cable 20 to the junction box 50 to complete the power connection between the platform body 10 and the submarine cable 20.

[0121] It can be understood that when the marine platform is displaced, it is necessary to release the connection between the submarine cable 20 and the platform body 10. At this time, the connection between the core wire of the submarine cable 20 and the junction box 50 can be removed first, and then the blocking cylinder 210 can be connected to the fixed cylinder 110 to complete the blocking of the submarine cable 20 to prevent the inside of the submarine cable 20 from entering the seawater. Then the blocking cylinder 210 is connected to the crane 40, and the connection between the limiter 320 and the support cylinder 310 is removed. After that, the crane 40 can be used to drive the blocking assembly 200 and the anchor assembly 100 to descend, so as to lower the submarine cable 20 to the sea surface. Finally, the connection between the blocking cylinder 210 and the crane 40 is released, the sling and hook of the crane 40 are recovered, and the marine platform is driven to shift.

[0122] The submarine cable anchoring device and the method for plugging and installing the submarine cable in the embodiment of the present application can reliably realize the installation and fixation of the submarine cable 20 and the platform body 10, and realize the input and output of the power of the offshore platform. Through the structural design of the anchoring assembly 100, the plugging assembly 200 and the supporting assembly 300, the connection between the submarine cable 20 and the platform body 10 can be easily and conveniently completed using the platform's own crane 40. The installation process of the submarine cable anchoring device is simple, and its disassembly and maintenance are also more convenient.

[0123] The above embodiments are merely exemplary descriptions of the structures. The structures in the embodiments are not fixed combination structures. In the absence of structural conflicts, the structures in multiple embodiments can be used in any combination.

[0124] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A submarine cable anchoring device, characterized in that: include: An anchoring assembly, comprising a fixing cylinder and a clamping part, wherein the fixing cylinder is used to pass the submarine cable, the clamping part is detachably connected to the end of the fixing cylinder, and the clamping part is used to clamp and fix the submarine cable; A plugging assembly, comprising a plugging cylinder, wherein the plugging cylinder is a cylinder structure with one end open, the open end of the plugging cylinder is detachably connected to one end of the fixed cylinder, and the open end of the plugging cylinder is used to cover the outside of the end of the submarine cable to seal the end of the submarine cable; A first sealing member, which is disposed between the clamping portion and the fixed cylinder; The second sealing member is arranged between the open end of the blocking cylinder and the fixed cylinder.

2. The submarine cable anchoring device according to claim 1, characterized in that: The anchoring assembly includes a first connecting portion, which is fixedly disposed on the outer peripheral side wall of the end of the fixed cylinder, and the first connecting portion is detachably connected to the clamping portion.

3. The submarine cable anchoring device according to claim 2, characterized in that: The first connecting portion is provided with a first connecting hole, and the clamping portion is provided with a second connecting hole corresponding to the first connecting hole. Both the first connecting hole and the second connecting hole are used for passing a fastener.

4. The submarine cable anchoring device according to claim 3, characterized in that: The plugging assembly includes a second connecting portion, which is fixedly disposed on the outer peripheral side wall of an open end of the plugging cylinder, and a third connecting hole is disposed on the second connecting portion corresponding to the first connecting hole.

5. The submarine cable anchoring device according to claim 1, characterized in that: The plugging assembly also includes a lifting ear structure, which is fixed on the outer surface of the end of the plugging cylinder away from its opening.

6. The submarine cable anchoring device according to claim 1, characterized in that: The clamping portion comprises a first clamping block and a second clamping block. The first clamping block and the second clamping block are assembled relative to each other to enclose a clamping opening, and the inner diameter of the clamping opening matches the outer diameter of the submarine cable.

7. The submarine cable anchoring device according to any one of claims 1 to 6, characterized in that: It also includes a support assembly, which is arranged on the platform body of the marine platform. The support assembly is provided with a limiting part, and the limiting part is used to limit and fix the fixing cylinder so that the submarine cable is fixedly installed on the platform body.

8. The submarine cable anchoring device according to claim 7, characterized in that: The support assembly comprises a support cylinder arranged in a vertical direction, the bottom end of the support cylinder is fixedly connected to the platform body, and a through hole for the anchor assembly and the plugging assembly to pass through is provided inside the support cylinder; The limiting portion is detachably connected to the top end of the supporting cylinder and is provided with a limiting hole matching the outer diameter of the fixing cylinder; A third sealing member is provided between the limiting portion and the top end of the supporting cylinder.

9. The submarine cable anchoring device according to claim 8, characterized in that: A first clamping plate is disposed on the outer peripheral side wall of the fixed cylinder, and a step surface is formed between the first clamping plate and the outer peripheral side wall of the fixed cylinder. The step surface can fit with the surface of the limiting portion away from the supporting cylinder.

10. The submarine cable anchoring device according to claim 9, characterized in that: A second clamping plate is also provided on the outer peripheral side wall of the fixed cylinder, and the second clamping plate is arranged opposite to the first clamping plate. The first clamping plate and the second clamping plate can respectively fit with two opposite surfaces of the limiting part in the vertical direction.

11. The submarine cable anchoring device according to claim 8, characterized in that: The limiting portion includes a first limiting block and a second limiting block, and the first limiting block and the second limiting block are assembled relative to each other to enclose the limiting hole.

12. The submarine cable anchoring device according to claim 8, characterized in that: The support assembly includes a third connecting portion, which is fixedly arranged on the outer peripheral side wall of the top end of the support cylinder. A fourth connecting hole is penetrated through the third connecting portion, and a fifth connecting hole is provided on the limiting portion corresponding to the fourth connecting hole. The fourth connecting hole and the fifth connecting hole are both used for inserting fasteners.

13. A method for plugging a submarine cable, characterized in that: The blocking method is implemented by using the submarine cable anchoring device according to any one of claims 1 to 12, comprising: Pass the submarine cable through the fixed cylinder; The clamping part is clamped on the outer periphery of the submarine cable and fixedly connected to the fixed cylinder; The open end of the blocking cylinder is covered on the exposed end of the submarine cable, and the open end of the blocking cylinder is fixedly connected to the fixed cylinder to complete the blocking of the submarine cable.

14. The method for plugging a submarine cable according to claim 13, characterized in that: After the sealing of the submarine cable is completed, it also includes: Connect the plugging cylinder to the external traction equipment, use the external traction equipment to pull the submarine cable to the platform body, fix the submarine cable anchoring device to the platform body, and complete the installation of the submarine cable and the platform body.

15. A method for installing a submarine cable, characterized in that: The installation method is implemented by using the submarine cable anchoring device according to any one of claims 7 to 12, and comprises: Pass the submarine cable through the fixed cylinder; The clamping part is clamped on the outer periphery of the submarine cable and fixedly connected to the fixed cylinder; The open end of the blocking cylinder is covered on the exposed end of the submarine cable, and the open end of the blocking cylinder is fixedly connected to the fixed cylinder; Connect the plugging cylinder to the external traction equipment, use the external traction equipment to pull the submarine cable to the platform body, and use the limiting part to limit the installation of the fixed cylinder to complete the installation of the submarine cable and the platform body.

Images