Submarine cable buoyancy block

Abstract

The utility model discloses a submarine cable buoyancy block which comprises a body, the body is formed by splicing two buoyancy half shells (1), the body clamps a submarine cable (2) in the splicing process so as to be fixedly connected to the submarine cable (2), a heat dissipation cavity (3) is formed in the axis of the body, the submarine cable (2) penetrates through the heat dissipation cavity (3), and the diameter of the heat dissipation cavity (3) is larger than that of the submarine cable (2). The submarine cable buoyancy block provided by the utility model is convenient to install and can ensure the heat dissipation effect of the buoyancy block installation area.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of submarine cable, concretely is a kind of submarine cable buoyancy block. BACKGROUND

[0002] With the continuous development and utilization of marine oil and gas resources, offshore wind power and other marine resources, submarine cable, especially optical-electric composite submarine cable, as an important channel for information and energy transmission, is increasingly applied in offshore platform systems.

[0003] The offshore platform system includes a floating platform and a floating wind turbine. The floating platform and the floating wind turbine are connected by a dynamic cable. During the use of the floating platform and the floating wind turbine, the floating platform and the floating wind turbine are affected by waves and ocean currents, and reciprocating stress occurs. To ensure the quality of the floating platform and the floating wind turbine in use at sea, the dynamic cable needs to have a length allowance to allow the floating platform and the floating wind turbine to move reciprocally along the waves and ocean currents, thereby avoiding breakage of the dynamic cable.

[0004] The buoyancy block is a commonly used tool for constructing a dynamic cable line type. The buoyancy block allows a section of the dynamic cable to float in water at a specific position by its own buoyancy, thereby forming a length allowance of the dynamic cable to avoid breakage of the dynamic cable. However, the traditional buoyancy block is generally fixed to the cable body of the submarine cable by a middle clamp. This type of buoyancy block is complex to install and requires a lot of time. Moreover, the design of this type of buoyancy block often results in poor heat dissipation effect of the submarine cable at the clamp, which reduces the power transmission performance of the dynamic cable and is not conducive to efficient use of the submarine cable. SUMMARY

[0005] The utility model solves the technical problem of providing a submarine cable buoyancy block that is easy to install and can ensure the heat dissipation effect of the installation area of the buoyancy block.

[0006] The utility model adopts the technical scheme of a submarine cable buoyancy block, which includes a body. The body is composed of two buoyancy half-shells. The body clamps the submarine cable during splicing to be fixedly connected to the submarine cable. A heat dissipation cavity is arranged on the axis of the body. The submarine cable passes through the heat dissipation cavity, and the diameter of the heat dissipation cavity is greater than the diameter of the submarine cable.

[0007] Compared with the prior art, the utility model has the advantages that the body is composed of two buoyancy half-shells, which does not need a middle clamp structure to be fixed to the cable body of the submarine cable. The installation is fast and has low difficulty. A heat dissipation cavity is arranged on the axis of the body, and the diameter of the heat dissipation cavity is greater than the diameter of the submarine cable. The cavity wall of the heat dissipation cavity does not adhere to and cover the submarine cable, so that the cable body area covered by the buoyancy block can be easily heat-dissipated, the reduction of the power transmission performance of the dynamic cable can be reduced, and the power transmission performance of the submarine cable can be ensured.

[0008] As a kind of improvement of the utility model, one limit bending clamping pipe is arranged at the two ends of the heat dissipation cavity, the pipe diameter of the limit bending clamping pipe is equal to the diameter of the submarine cable, when two buoyancy half shells are spliced, the limit bending clamping pipe is spliced to clamp the submarine cable and fix the body on the submarine cable, through the improvement, the limit bending clamping pipe is also divided into two parts and arranged on the two buoyancy half shells, when the two buoyancy half shells are spliced, the limit bending clamping pipe is also spliced to clamp the submarine cable, so that the body is fixed on the submarine cable.

[0009] As a kind of improvement of the utility model, friction lines are arranged on the inner wall of the limit bending clamping pipe to enhance the fixing strength of the limit bending clamping pipe on the submarine cable, through the improvement, the offset of the limit bending clamping pipe on the submarine cable can be reduced, and in actual application, because the buoyancy block drives the submarine cable to float, the bending of the dynamic cable does not easily cause the offset of the buoyancy block on the submarine cable, so that the fixing stability of the buoyancy block on the submarine cable is ensured.

[0010] As a kind of improvement of the utility model, a deformable closed soft connection is arranged between the limit bending clamping pipe and the body, through the improvement, the limit bending clamping pipe and the body can be bent and deformed within a certain range, the limit bending function of the limit bending clamping pipe on the submarine cable is realized, the bending angle of the submarine cable caused by floating is prevented from being too large to affect the use quality, the limit bending clamping pipe and the body are connected in a closed mode to ensure the overall connection and the connection strength between the limit bending clamping pipe and the body, and the breakage of the limit bending clamping pipe under bending is avoided.

[0011] As a kind of improvement of the utility model, the two buoyancy half shells are fixed and connected by being inserted into a strap, through the improvement, the quick splicing and fixing of the two buoyancy half shells are realized.

[0012] As a kind of improvement of the utility model, a strap slot is arranged on the circumference of the middle part of the body, and a clamping pipe strap slot is arranged on the circumference of the limit bending clamping pipe at both ends, through the improvement, the buoyancy block is first installed on the deck before the submarine cable enters the sea, and the buoyancy block will first experience friction with the deck when it is put into the sea, through the design of the strap slot, the inserted strap sinks into the strap slot, so that the friction between the inserted strap and the deck is avoided, and the use quality of the inserted strap is ensured, and after the buoyancy block is put into the sea, the design of the strap slot and the clamping pipe strap slot can prevent the inserted strap from being directly impacted by seawater, so that the tightness of the inserted strap is ensured, and the inserted strap is prevented from loosening or being damaged.

[0013] As one kind of improvements of the utility model, the outer middle part of the buoyancy half shell is also provided with a cable tie deformation groove, the cable tie deformation groove is arranged on the path of the cable tie groove, and the depth of the cable tie deformation groove is greater than the depth of the cable tie groove, and the buckle of the cable tie is in the cable tie groove, through the improvement, when the cable tie is tightened, the space will be contracted, through the design of the cable tie deformation groove, the cable tie can be deformed in the cable tie deformation groove area when being tightened, so that the cable tie becomes a long waist ring, thereby the situation that the cable tie rotates along the circumference of the body after being tightened can be avoided, and the buckle of the cable tie is in the cable tie groove to avoid the buckle being in a suspended state, which is not conducive to the firmness of the buckle of the cable tie.

[0014] As one kind of improvements of the utility model, a plurality of communication holes communicating with the heat dissipation cavity are arranged on the two buoyancy half shells, through the improvement, the heat dissipation cavity and the external seawater can be conveniently heat exchanged, thereby helping the heat dissipation cavity to dissipate heat and ensuring the power transmission efficiency of the submarine cable.

[0015] As one kind of improvements of the utility model, the outer side of the buoyancy half shell is provided with an anti-blocking groove along the axial direction of the body, and the communication hole is arranged on the groove bottom of the anti-blocking groove, through the improvement, in the use process of the buoyancy block, large foreign matters are likely to block the communication hole, thereby being not conducive to the heat exchange of the heat dissipation cavity, through the design of the anti-blocking groove, the large foreign matters can be stuck in the anti-blocking groove, and the communication hole of the communication hole is continuously retained, thereby ensuring the heat exchange effect of the communication hole.

[0016] As one kind of improvements of the utility model, the two buoyancy half shells are respectively a first buoyancy half shell and a second buoyancy half shell, two alignment holes and two alignment columns are arranged on the splicing surface of the first buoyancy half shell, the two alignment holes and the two alignment columns form four corners of a rectangle, the two alignment holes are arranged at two ends of one diagonal line, and the two alignment columns are arranged at two ends of another diagonal line, two alignment holes and two alignment columns are also arranged on the splicing surface of the second buoyancy half shell, the alignment holes on the first buoyancy half shell are oppositely arranged with the alignment columns on the second buoyancy half shell, and the alignment columns on the first buoyancy half shell are oppositely arranged with the alignment holes on the second buoyancy half shell, through the improvement, the accuracy of splicing of the two buoyancy half shells is ensured, and the two buoyancy half shells are not easy to relatively deviate in the use process, thereby ensuring the use effect of the buoyancy block. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic view of the utility model.

[0018] Figure 2 It is the internal structure schematic view of the utility model.

[0019] Figure 3 It is the communication hole distribution structure schematic view of the utility model.

[0020] Figure 4 is the application structure diagram of the utility model.

[0021] Figure 5 is the internal structure diagram of the utility model in application state.

[0022] As shown in the figure: 1, buoyancy half shell, 1.1, alignment hole, 1.2, alignment column, 2, submarine cable, 3, heat dissipation cavity, 4, bending limiting clamping pipe, 4.1, friction lines, 5, tie-in belt, 6, tie-in belt groove, 7, clamping pipe tie-in belt groove, 8, tie-in belt deformation groove, 9, communication hole, 10, anti-blocking groove. DETAILED DESCRIPTION

[0023] The embodiment of the utility model is further described below in combination with the drawings.

[0024] As Figures 1-2 shown, a submarine cable buoyancy block, including the body, the body is spliced by two buoyancy half shells 1, the body is clamped to the submarine cable 2 in the splicing process to be fixedly connected on the submarine cable 2, the body is provided with a heat dissipation cavity 3 on the axis, and the submarine cable 2 passes through the heat dissipation cavity 3, and the diameter of the heat dissipation cavity 3 is greater than the diameter of the submarine cable 2, two ends of the heat dissipation cavity 3 are respectively provided with a bending limiting clamping pipe 4, the pipe diameter of the bending limiting clamping pipe 4 is equal to the diameter of the submarine cable 2, when two buoyancy half shells 1 are spliced into shape, the bending limiting clamping pipe 4 is spliced into shape to clamp the submarine cable 2 and fixedly connect the body on the submarine cable 2, the inner wall of the bending limiting clamping pipe 4 is provided with friction lines 4.1 to enhance the fixing strength of the bending limiting clamping pipe 4 to the submarine cable 2, two the buoyancy half shell 1 is the first buoyancy half shell and the second buoyancy half shell, the splicing surface of the first buoyancy half shell is provided with two alignment holes 1.1 and two alignment columns 1.2, two alignment holes 1.1 and two alignment columns 1.2 form the four corners of a rectangle, two alignment holes 1.1 are arranged at the two ends of a diagonal line, and two alignment columns 1.2 are arranged at the two ends of another diagonal line, the splicing surface of the second buoyancy half shell is also provided with two alignment holes 1.1 and two alignment columns 1.2, the alignment hole 1.1 on the first buoyancy half shell is arranged opposite to the alignment column 1.2 on the second buoyancy half shell, and the alignment column 1.2 on the first buoyancy half shell is arranged opposite to the alignment hole 1.1 on the second buoyancy half shell.

[0025] As Figure 2 , Figure 5 shown, the bending limiting clamping pipe 4 and the body adopt a deformable closed soft connection.

[0026] As Figures 1-3As shown, two said buoyancy half shell 1 is fixedly connected by the strap 5, the body is provided with strap slot 6 in the middle of the circumference, the circumference of the two ends of said limit bending clamping pipe 4 is provided with clamping pipe strap slot 7, and the clamping pipe strap slot 7 of each end has two. The outer side of the middle of said buoyancy half shell 1 is also provided with strap deformation slot 8, said strap deformation slot 8 is arranged on the path of strap slot 6, and the depth of said strap deformation slot 8 is greater than the depth of strap slot 6, and the buckle of said strap 5 is in strap slot 6.

[0027] As Figures 2-3 shown, two said buoyancy half shell 1 is provided with a plurality of communication holes 9 connected with the heat dissipation cavity 3, and the outer side of said buoyancy half shell 1 is provided with anti-blocking groove 10 along the axial direction of the body, and said communication hole 9 is arranged on the groove bottom of anti-blocking groove 10.

[0028] As Figure 4 , Figure 5 shown, in the process of using the submarine cable buoyancy block, the submarine cable 2 will be driven by the submarine cable buoyancy block to rise and form a wave shape, thereby forming a length allowance in the dynamic cable area, while the static cable sinks in the seabed and remains stationary, and each section of the wave-shaped dynamic cable is curved, and the limit bending clamping pipe 4 will be deformed according to the area of the dynamic cable and limit the bending angle of the dynamic cable to avoid excessive bending; at the same time, the heat dissipation cavity 3 also presents a smooth arc-shaped inner wall with small ends and large middle, which can be fitted with the inner wall of the heat dissipation cavity 3 when the dynamic cable is bent, thereby increasing the connection stability of the dynamic cable and the submarine cable buoyancy block.

[0029] The above only describes the best embodiment of the present application, but cannot be understood as a limitation on the claims. The present application is not limited to the above embodiments, and the specific structure can be changed. Any change made within the protection scope of the independent claims of the present application is within the protection scope of the present application.

Claims

1. A submarine cable buoyancy module comprising a body, characterised in that: The body is spliced by two buoyancy half shells (1), the body clamps the submarine cable (2) to be fixedly connected on the submarine cable (2) during splicing, the axis of the body is provided with a heat dissipation cavity (3), the submarine cable (2) passes through the heat dissipation cavity (3) and the diameter of the heat dissipation cavity (3) is greater than the diameter of the submarine cable (2), the both ends of the heat dissipation cavity (3) are respectively provided with a bending limiting clamping pipe (4), the pipe diameter of the bending limiting clamping pipe (4) is equal to the diameter of the submarine cable (2), the bending limiting clamping pipe (4) is spliced and formed to clamp the submarine cable (2) and fix the body on the submarine cable (2) when the two buoyancy half shells (1) are spliced and formed, the two buoyancy half shells (1) are fixedly connected by a lacing belt (5), the middle part of the body is provided with a lacing belt groove (6) in the circumferential direction, the both ends of the bending limiting clamping pipe (4) are respectively provided with a clamping pipe lacing belt groove (7) in the circumferential direction, the outer middle part of the buoyancy half shell (1) is further provided with a lacing belt deformation groove (8), the lacing belt deformation groove (8) is arranged on the path of the lacing belt groove (6), and the depth of the lacing belt deformation groove (8) is greater than the depth of the lacing belt groove (6), and the buckle of the lacing belt (5) is in the lacing belt groove (6).

2. A buoyancy module for a submarine cable according to claim 1, characterised in that: The inner wall of the bending limiting clamping pipe (4) is provided with a friction pattern (4.1) to enhance the fixing strength of the bending limiting clamping pipe (4) to the submarine cable (2).

3. A buoyancy module for a submarine cable according to claim 1, characterised in that: The bending limiting clamping pipe (4) and the body are connected by a deformable closed soft connection.

4. A buoyancy module for a submarine cable according to claim 1, characterised in that: The two buoyancy half shells (1) are provided with a plurality of communication holes (9) communicated with the heat dissipation cavity (3).

5. A buoyancy module for a submarine cable according to claim 4, characterised in that: The outer side of the buoyancy half shell (1) is provided with an anti-blocking groove (10) along the axial direction of the body, and the communication hole (9) is arranged on the groove bottom of the anti-blocking groove (10).

6. A buoyancy module for a submarine cable according to claim 1, characterised in that: The two buoyancy half shells (1) are respectively a first buoyancy half shell and a second buoyancy half shell, the splicing surface of the first buoyancy half shell is provided with two alignment holes (1.1) and two alignment columns (1.2), the two alignment holes (1.1) and the two alignment columns (1.2) form four corners of a rectangle, the two alignment holes (1.1) are arranged at the two ends of one diagonal line, and the two alignment columns (1.2) are arranged at the two ends of the other diagonal line, the splicing surface of the second buoyancy half shell is also provided with two alignment holes (1.1) and two alignment columns (1.2), the alignment hole (1.1) on the first buoyancy half shell is arranged opposite to the alignment column (1.2) on the second buoyancy half shell, and the alignment column (1.2) on the first buoyancy half shell is arranged opposite to the alignment hole (1.1) on the second buoyancy half shell.

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