A scour protection device for a submarine cable

Abstract

The present application relates to the field of marine cable protection, and discloses a kind of sea cable scour protection device, it includes protection unit, protection unit includes: sleeve is set to the sleeve of sea cable periphery;And;Buffering assembly, buffering assembly includes buffer and support, buffer includes bottom plate and two side plates obliquely arranged on the top of bottom plate, one end of two side plates is connected to bottom plate respectively and has interval, the other end of two side plates is connected to each other, two side plates and bottom plate are enclosed to form storage cavity, and the communication hole that side plate and bottom plate are all opened has through its two side faces;Wherein, sleeve is set in storage cavity and has interval between the inner wall of storage cavity, and the side of bottom plate and / or side plate facing storage cavity is connected with support, one end of support is connected with sleeve.The present application is effectively solved by the setting of buffering assembly the problem that the installation difficulty of sea cable protection device is big, and the problem that the protection effect of sea cable is poor.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of marine cable protection, in particular to a marine cable scour protection device. BACKGROUND

[0002] Marine cables are mainly used for telecommunication transmission, such as telephone, network, television and other information services. According to different uses and performances, marine cables can be further divided into international marine cables, regional marine cables, seabed power cables and the like. In order to protect marine cables, most of the marine cables are laid under the seabed. Due to the complex marine environment, especially the strong ocean current and surge in the offshore area, the marine cable is prone to excessive bending due to the scour of the ocean current, and long-term excessive bending will cause mechanical damage to the marine cable body, threatening the safety of the marine cable. The ocean current load will also cause the marine cable to move and collide with the seabed rock body, damaging the outer protective layer of the marine cable, and ultimately destroying the marine cable.

[0003] In view of the damage to the outer protective layer of the marine cable caused by the scour of the ocean current and surge on the suspended section of the marine cable, the currently commonly used marine cable protection methods mainly include two types: one type is support fixing, which usually places a support under the marine cable, and uses a circular ring-shaped device above the support to clamp the marine cable, so as to achieve the fixing effect, prevent the marine cable from moving, and avoid friction with the seabed; the other type is an additional protective layer, which is a hollow cylindrical pipeline wrapped outside the marine cable. This layer of pipeline can limit the bending of the marine cable and replace the friction between the marine cable and the seabed. However, the support fixing method is extremely difficult to install and has a higher cost, and is only suitable for a small section of the marine cable at the mud inlet end. For the suspended or exposed marine cable in the middle section, this measure is difficult to play a role; and the additional protective layer method can only replace the friction and limit the bending of the marine cable, but cannot limit the movement of the marine cable caused by the water flow. The outer protective layer will also move and may be bent and worn during the movement, and will not have a long service life due to the severe friction. SUMMARY

[0004] The technical problem to be solved by the present application is that the installation of the marine cable protection is difficult and the protection effect of the marine cable is poor.

[0005] In order to solve the above technical problems, the present application provides a marine cable scour protection device, which comprises a protection unit, wherein the protection unit comprises: a sleeve arranged around the marine cable; and

[0006] A buffer assembly, the buffer assembly includes a buffer part and a support part, the buffer part includes a base plate and two side plates obliquely arranged on the top of the base plate, one end of the two side plates are respectively connected to the base plate and have a gap, the other ends of the two side plates are connected to each other, the two side plates and the base plate are enclosed to form a storage cavity, the side plates and the base plate are both provided with connecting holes passing through their two side surfaces; wherein, the sleeve is arranged in the storage cavity and has a gap between it and the inner wall of the storage cavity, the base plate and / or the side plate are connected to the support part on the side facing the storage cavity, and one end of the support part is connected to the sleeve.

[0007] In one embodiment, the submarine cable anti-scour protection device includes a plurality of protection units, and the sleeves and buffers of two adjacent protection units correspond to and are connected to each other.

[0008] In one embodiment, at least two first connection parts are respectively provided at both ends of the sleeve in the axial direction, and the at least two first connection parts are spaced apart along the outer circumference of the sleeve, and each first connection part is provided with a connection hole for fixing.

[0009] In one embodiment, the buffer is provided with at least two second connection parts at both ends of the sleeve along the axial direction, the at least two second connection parts are spaced apart along the outer circumference of the buffer, and each second connection part is provided with a connection hole for fixing.

[0010] In one embodiment, there are at least two side panels, one end of the two side panels connected to each other can be detachably connected, and the other end is connected to the bottom panel, and the connection end between the side panel and the other side panel or the bottom panel is provided with a first connecting ear for fixation.

[0011] In one embodiment, the sleeve includes clamping parts symmetrically arranged along the axis of the sleeve, and the two clamping parts are detachably connected.

[0012] In one embodiment, the connecting end of each clamping portion and another clamping portion is provided with a second connecting ear for fixation, the bottom plate includes two detachable plates, and each plate is connected to the clamping portion through the second connecting ear.

[0013] In one embodiment, the communication holes include a plurality of first communication holes spaced apart on the side plates and a plurality of second communication holes spaced apart on the bottom plate.

[0014] In one embodiment, the support member includes a first support column arranged at the top of the sleeve and a second support column arranged at the bottom of the sleeve, one end of the first support column is connected to the outer wall of the sleeve, and the other end is connected to the inner wall of the side plate, one end of the second support column is connected to the outer wall of the sleeve, and the other end is connected to the inner wall of the bottom plate, and the number of the first support column and the second support column is at least two.

[0015] Compared with the prior art, the submarine cable anti-scour protection device of the embodiment of the present invention has the following beneficial effects: 1) The underwater submarine cable is protected by the sleeve to prevent the protective layer of the submarine cable from directly contacting the rocks on the seabed, so that the protection effect of the submarine cable is better; 2) The submarine cable in the sleeve is secondary protected by the buffer component. The sleeve is arranged in the storage cavity and there is a gap between the sleeve and the inner wall of the storage cavity, and is fixed by a support member, so that when the sleeve is scoured by water, it will not collide with the inner wall of the storage cavity, causing damage to the submarine cable in the sleeve; 3) The device is placed on the seabed through the bottom plate, and the bottom plate is close to the seabed. The device is fitted with each other to increase the friction between the device and the seabed, thereby preventing the device from moving under the scouring of the water flow; 4) through the side plates, the device's own gravity and the scouring of the side plates by the seawater are utilized to make the device sink as a whole. At the same time, the scouring of the side plates by the seawater applies a force toward the seabed to the device, causing the device to sink into the mud and sand. The part of the device that is sunk into the mud and sand is restricted from moving, further preventing it from moving under the scouring of the water flow. At the same time, the greater the scouring force of the water flow, the more part of the device is sunk into the mud and sand, and the greater the resistance to the movement of the device; 5) the water flow is diverted through the through hole to prevent the device from tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of an embodiment of the present invention.

[0017] Figure 2 2 is a schematic diagram of an embodiment of the present invention in a disassembled state.

[0018] Figure 3 It is a front view of an embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram from another angle of the embodiment of the present invention in the disassembled state.

[0020] Figure 5 It is a structural schematic diagram of the bottom plate of an embodiment of the present invention.

[0021] In the figure, 1, sleeve; 11, clamping portion; 111, second connecting ear; 12, first connecting portion;

[0022] 2. Buffer assembly; 21. Side plate; 211. First communication hole; 212. First connecting ear; 22. Bottom plate; 221. Second communication hole; 23. Second connecting portion;

[0023] 3. Support member; 31. First support column; 32. Second support column;

[0024] 100. Protection unit. DETAILED DESCRIPTION

[0025] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0026] In the description of the present invention, it should be understood that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element. The terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, it may be internal communication between two elements or an interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the description of the present invention, it should be understood that the terms "height", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In describing the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being described. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features.

[0029] like Figure 1-5As shown, an embodiment of the present invention preferably provides a submarine cable anti-scour protection device, which includes a protection unit 100, and the protection unit 100 includes: a sleeve 1 arranged on the outer periphery of the submarine cable; a buffer assembly 2, the buffer assembly 2 includes a buffer and a support 3, the buffer includes a bottom plate 22 and two side plates 21 obliquely arranged on the top of the bottom plate 22, one end of the two side plates 21 are respectively connected to the bottom plate 22 and have a gap, the other ends of the two side plates 21 are connected to each other, the two side plates 21 and the bottom plate 22 are enclosed to form a storage cavity, and the side plates 21 and the bottom plate 22 are both provided with connecting holes passing through their two side surfaces; wherein, the sleeve 1 is arranged in the storage cavity and has a gap between it and the inner wall of the storage cavity, the bottom plate 22 and / or the side plate 21 facing the storage cavity are connected to the support 3, and one end of the support 3 is connected to the sleeve 1. The present application effectively protects the submarine cable through the sleeve 1 and the buffer assembly 2; 1) the device is placed on the seabed through the bottom plate 22, and the bottom plate 22 fits against the seabed, thereby increasing the friction between the device and the seabed and preventing the device from moving under the scouring of the water flow; 2) the device is made to sink as a whole through the side plate 21 by utilizing the device's own gravity and the scouring of the side plate 21 by the seawater. At the same time, the scouring of the side plate 21 by the seawater applies a force toward the seabed to the device, causing the device to sink into the mud and sand. The part of the device that is sunk into the mud and sand is restricted from moving, further preventing it from moving under the scouring of the water flow.

[0030] In some embodiments of the present invention, a submarine cable anti-scour protection device includes multiple protection units 100, wherein the sleeves 1 and buffer members of two adjacent protection units 100 correspond to and are connected. Depending on the actual needs of submarine cable protection, multiple protection units 100 can be used to provide comprehensive protection for the submarine cable, thereby improving the applicability of the device.

[0031] In some embodiments of the present invention, at least two first connecting portions 12 are provided at either axial end of the sleeve 1. The at least two first connecting portions 12 are spaced apart along the outer circumference of the sleeve 1, and each first connecting portion 12 includes a connection hole for securing the sleeve 1. By providing the first connecting portions 12, two adjacent protective units 100 are connected and secured via the first connecting portions 12 at either end of the sleeve 1, thereby providing a tighter connection between the two adjacent sleeves 1 and improving the stability of the connection between the two adjacent protective units 100.

[0032] In some embodiments of the present invention, the buffer member is provided with at least two second connecting portions 23 at either end of the sleeve 1 along the axial direction. The at least two second connecting portions 23 are spaced apart along the outer circumference of the buffer member, and each second connecting portion 23 includes a connection hole for fixing. The provision of the second connecting portions 23 further reinforces the two adjacent protective units 100 through the second connecting portions 23 at both ends of the buffer member, further improving the stability of the connection between the two adjacent protective units 100.

[0033] Furthermore, the waterproof bolts are passed through the connection holes of the first connection part 12 and the second connection part 23 for fixing. When multiple protection units need to be installed or removed, the installation or removal of multiple protection units 100 can be achieved by tightening or loosening the waterproof bolts.

[0034] In some embodiments of the present invention, the number of side panels 21 is at least two, one end of the two side panels 21 connected to each other is detachably connected, and the other end is connected to the bottom panel 22, and the connection end between the side panel 21 and the other side panel 21 or the bottom panel 22 is provided with a first connection ear 212 for fixation. Through the arrangement of the side panels 21 and the bottom panel 22, the two side panels 21 can be detachably connected via the first connection ear 212, so that the two side panels 21 can be separated from each other, providing a basis for placing the submarine cable in the sleeve 1. At the same time, the two side panels 21 and the bottom panel 22 are connected to each other to form a triangular prism shape. When the device is placed on the seabed, the outer triangular prism structure can replace the submarine cable in rubbing against external objects, and can also keep the submarine cable fixed, limit its displacement, and avoid friction on the submarine cable.

[0035] In some embodiments of the present invention, the area of ​​the bottom plate 22 is larger than the area of ​​each side plate 21. This increases the contact area between the bottom plate 22 and the seabed, thereby increasing the friction between the bottom plate 22 and the seabed and preventing the device from moving when eroded by water.

[0036] In some embodiments of the present invention, the sleeve 1 includes clamping portions 11 symmetrically arranged along the axis of the sleeve 1, with two clamping portions 11 being detachably connected. The two clamping portions 11 are combined to form a protective cavity, and the submarine cable is placed in the protective cavity to prevent the submarine cable from colliding with foreign objects on the seabed.

[0037] In some embodiments of the present invention, the connection end between each clamping portion 11 and another clamping portion 11 is provided with a second connecting ear 111 for fixation, and the bottom plate 22 includes two detachable plates, and each plate is connected to the clamping portion 11 via the second connecting ear 111. The provision of the second connecting ear 111 enables the two clamping portions 11 to be tightly connected by bolts, thereby improving the stability of the sleeve 1. At the same time, the provision of the two plates further improves the stability of the disassembly and fixation of the device, thereby achieving the overall disassembly and fixation of the bottom plate 22, sleeve 1, and side plate 21 in the device.

[0038] In some embodiments of the present invention, the communication holes include a plurality of first communication holes 211 spaced apart on the side panels 21 and a plurality of second communication holes 221 spaced apart on the bottom panel 22. The first communication holes 211 on the side panels 21 divert the flushing water flow, reducing the impact of the water flow on the device. The second communication holes 221 on the bottom panel 22 allow the mud and sand below the bottom panel 22 to pass through the second communication holes 221 and enter the storage chamber when the device is sunk in mud and sand, increasing the weight in the storage chamber and making the device more susceptible to being sunk in mud and sand. The increased weight further prevents the device from moving under the scouring of the water flow.

[0039] As some embodiments of the present invention, the support member 3 includes a first support column 31 provided at the top of the sleeve 1 and a second support column 32 provided at the bottom of the sleeve 1, wherein one end of the first support column 31 is connected to the outer wall of the sleeve 1 and the other end is connected to the inner wall of the side panel 21, and one end of the second support column 32 is connected to the outer wall of the sleeve 1 and the other end is connected to the inner wall of the bottom panel 22, and the number of the first support column 31 and the second support column 32 is at least two. The provision of the first support column 31 fixes the side panel 21 and the sleeve 1, and the provision of the second support column 32 fixes the bottom panel 22 and the sleeve 1, thereby preventing the side panel 21 and the bottom panel 22 from falling off during use of the device and improving the structural stability of the device.

[0040] In summary, the embodiment of the present invention provides a submarine cable anti-scour protection device, 1) through the sleeve 1, the underwater submarine cable is protected to prevent the protective layer of the submarine cable from directly contacting the rocks on the seabed, so that the protection effect of the submarine cable is better; 2) through the buffer component 2, the submarine cable in the sleeve 1 is secondary protected, the sleeve 1 is arranged in the storage cavity, and there is a gap between the sleeve 1 and the inner wall of the storage cavity, and it is fixed by the support member 3, so that when the sleeve 1 is washed by water, it will not collide with the inner wall of the storage cavity, causing damage to the submarine cable in the sleeve 1; 3) through the bottom plate 22, the device is placed on the seabed, and the bottom plate 22 is in contact with the seabed , increase the friction between the device and the seabed, and prevent the device from moving under the scouring of water flow; 4) Through the side plate 21, the device's own gravity and the scouring of the side plate 21 by the seawater are used to make the device sink as a whole. At the same time, the scouring of the side plate 21 by the seawater applies a force toward the seabed to the device, so that the device will sink into the mud and sand. The part of the device that is trapped in the mud and sand is restricted from moving, further preventing it from moving under the scouring of water flow. At the same time, the greater the scouring force of the water flow, the more part of the device is trapped in the mud and sand, and the greater the resistance to the movement of the device; 5) Through the through hole, the water flow is diverted to prevent the device from tipping over.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A submarine cable anti-scour protection device, characterized in that: A protection unit is included, wherein the protection unit includes: a sleeve fitted around the outer circumference of a submarine cable; and A buffer assembly, the buffer assembly comprising a buffer member and a support member, the buffer member comprising a bottom plate and two side plates obliquely arranged on top of the bottom plate, one end of the two side plates being respectively connected to the bottom plate with a gap therebetween, the other ends of the two side plates being connected to each other, the two side plates and the bottom plate enclosing a storage cavity, the side plates and the bottom plate both having a communicating hole extending through both sides thereof; The sleeve is disposed in the storage cavity and is spaced apart from the inner wall of the storage cavity. The support member is connected to a side of the bottom plate and / or the side plate facing the storage cavity, and one end of the support member is connected to the sleeve. It comprises a plurality of protection units, wherein the sleeves and the buffer members of two adjacent protection units correspond to and are connected to each other, at least two first connection parts are respectively provided at both ends of the sleeve in the axial direction, at least two first connection parts are spaced apart along the outer circumference of the sleeve, and each of the first connection parts is provided with a connection hole for fixing, and at least two second connection parts are respectively provided at both ends of the buffer member in the axial direction of the sleeve, at least two second connection parts are spaced apart along the outer circumference of the buffer member, and each of the second connection parts is provided with a connection hole for fixing.

2. The submarine cable anti-scour protection device according to claim 1, characterized in that: There are at least two side panels, one end of the two side panels connected to each other can be detachably connected, and the other end is connected to the bottom panel, and the connection end between the side panel and the other side panel or the bottom panel is provided with a first connection ear for fixation.

3. The submarine cable anti-scour protection device according to claim 2, characterized in that: The sleeve comprises two clamping parts symmetrically arranged along the axis of the sleeve, and the two clamping parts are detachably connected.

4. The submarine cable anti-scour protection device according to claim 3, characterized in that: The connecting end between each clamping portion and another clamping portion is provided with a second connecting ear for fixing. The base plate includes two detachable plates, and each plate is connected to the clamping portion via the second connecting ear.

5. The submarine cable anti-scour protection device according to claim 1, characterized in that: The communication holes include a plurality of first communication holes arranged at intervals on the side plates and a plurality of second communication holes arranged at intervals on the bottom plate.

6. The submarine cable anti-scour protection device according to claim 1, characterized in that: The support member includes a first support column arranged at the top of the sleeve and a second support column arranged at the bottom of the sleeve, one end of the first support column is connected to the outer wall of the sleeve, and the other end is connected to the inner wall of the side plate, one end of the second support column is connected to the outer wall of the sleeve, and the other end is connected to the inner wall of the bottom plate, and the number of the first support column and the second support column is at least two.

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