End protection device for semi-wet type aluminum-plastic composite belt submarine cable

Abstract

The utility model belongs to the technical field of submarine cable protection, and particularly relates to an end protection device for a semi-wet type aluminum-plastic composite belt submarine cable, which comprises a sleeve shell formed by mutually splicing a plurality of unit blocks around the axis, the sleeve shell is internally provided with an accommodating cavity, one end of the sleeve shell is provided with an opening for the submarine cable to extend in, and the other end of the sleeve shell is provided with a channel for a net sleeve to extend out; the multiple groups of connecting assemblies are arranged between the adjacent unit blocks in a one-to-one correspondence manner and are used for detachably connecting the adjacent unit blocks; according to the utility model, a plurality of unit blocks can be mutually assembled to form a shell on site, the operation is simple and convenient, the disassembly and assembly efficiency is high, the convenience of installation and maintenance is improved, and the submarine cable end can be tightly wrapped, so that the waterproof effect is obviously improved, and the net sleeve can be conveniently connected with the pull ring by virtue of the arranged channel for the net sleeve to extend out, so that the service life of the net sleeve is prolonged. Therefore, laying of submarine cables is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of submarine cable protection, and particularly relates to an end protection device for semi-wet type aluminum-plastic composite belt submarine cable. BACKGROUND

[0002] The semi-wet type aluminum-plastic composite belt submarine cable is a cable specially designed for protecting marine environment, which adopts aluminum-plastic composite belt as part of the metal shielding layer and radial water-blocking layer instead of the traditional lead sheath design. The aluminum-plastic composite belt is composed of an aluminum layer and a plastic layer, which provides good electrical conductivity and shielding effect. Meanwhile, the plastic layer plays the role of insulation, waterproof and chemical corrosion resistance, and has the characteristics of light weight, corrosion resistance, high cost-effectiveness and easy processing.

[0003] In marine engineering, the laying of submarine cable is a key link. The end of the submarine cable is easily affected by seawater erosion and mechanical damage during the laying process, resulting in a decrease in waterproof performance. To this end, the conventional submarine cable has a lead sleeve, so the cable core can be sealed by lead sealing technology. After the lead sealing is cooled, waterproof tape is wound around the joint of the lead sleeve, and then a heat-shrinkable cap is sleeved, and waterproof tape is wound again, finally forming a multiple waterproof barrier.

[0004] However, the cable core of the semi-wet type aluminum-plastic composite belt submarine cable cancels the traditional lead sleeve design, so it cannot be lead sealed, and thus the waterproof effect cannot be guaranteed by waterproof tape and a heat-shrinkable cap alone, which makes the cable core conductor vulnerable to seawater erosion, thereby affecting the service life and reliability of the submarine cable. SUMMARY

[0005] The utility model aims at providing an end protection device for semi-wet type aluminum-plastic composite belt submarine cable, which solves the technical problem of poor waterproof effect of the end of the semi-wet type aluminum-plastic composite belt submarine cable during laying in the prior art.

[0006] The utility model discloses an end protection device for semi-wet type aluminum-plastic composite belt submarine cable, comprising:

[0007] The sleeve shell is composed of a plurality of unit blocks that are spliced together around an axis, and has a receiving cavity inside. One end is provided with an opening for the submarine cable to extend into, and the other end is provided with a passage for the net sleeve to extend out.

[0008] A plurality of connection assemblies are arranged one by one between adjacent unit blocks to detachably connect adjacent unit blocks.

[0009] The application can be assembled into a sleeve shell by a plurality of unit blocks on site, which is simple and convenient to operate, has high disassembly and assembly efficiency, improves the convenience of installation and maintenance, tightly wraps the end of the submarine cable, significantly improves the waterproof effect, and provides a passage for the net sleeve to extend out, thereby facilitating the connection of the net sleeve and the pull ring for the laying of the submarine cable.

[0010] Based on the technical solutions above, the scheme of the present application can be further improved as follows:

[0011] Preferably, the scheme comprises:

[0012] The waterproof glue is filled in the accommodating cavity; by using the scheme, the submarine cable end can be tightly wrapped, so that an effective waterproof barrier is formed, and the waterproof performance of the submarine cable end is greatly improved in combination with the protection of the sleeve.

[0013] Preferably, the sleeve comprises:

[0014] The conical shell part is in a conical structure and is provided with the passage at the center;

[0015] The cylindrical part is in a cylindrical structure and is coaxially arranged at the bottom end of the conical shell part; by using the scheme, the convergence of the net sleeve is guided, stress dispersion is facilitated, the structural strength is improved, the shape of the submarine cable is matched, the submarine cable end is well supported and protected in the sleeve, and the submarine cable is prevented from being extruded or deformed due to space mismatch.

[0016] Preferably, the conical shell part and the cylindrical part have a first arc-shaped transition therebetween; by using the scheme, a buffering effect is achieved, stress is uniformly dispersed, the case of excessive local stress is reduced, the overall structural stability is improved, and the abrupt connection between the two is avoided, so that the entire sleeve is more smooth and integrated.

[0017] Preferably, the top end of the conical shell part is provided with a butt joint plane, and the butt joint plane is perpendicular to the axis; by using the scheme, a flat contact surface is provided, a positioning effect is achieved, and the reliability of the connection is enhanced.

[0018] Preferably, the side surface of the conical shell part and the butt joint plane have a second arc-shaped transition therebetween; by using the scheme, a buffering effect is achieved, stress is uniformly dispersed, the case of excessive local stress is reduced, the overall structural stability is improved, and the abrupt connection between the two is avoided, so that the entire sleeve is more smooth and integrated.

[0019] Preferably, the two ends of the unit block have split planes, a plurality of connecting holes are formed in the two sides of the outer surface of the unit block, and the connecting holes pass through to the adjacent split planes;

[0020] The connecting assembly comprises:

[0021] A nut;

[0022] A bolt, the screw rod is screwed with the nut after passing through the two corresponding connecting holes; by using the scheme, the stable connection between the adjacent unit blocks is ensured, the structure is simple and compact, the disassembly and assembly are convenient, and the practical application is facilitated.

[0023] Preferably, the unit block outer surface is provided with a plurality of embedded grooves, the connecting holes are provided in the groove bottom of the embedded grooves one by one, and the groove bottom of the embedded grooves is parallel to the adjacent split plane; by adopting the scheme, the connecting assembly can be accommodated, thereby playing a protection role, ensuring the stability of locking, improving the compactness of the structure, and ensuring the roundness of the outer periphery of the shell, which is not conspicuous.

[0024] Through the above technical scheme, the utility model realizes the following beneficial effects:

[0025] 1. The application can be assembled into a shell by a plurality of unit blocks on site, which is simple and convenient to operate, has high disassembly and assembly efficiency, improves the convenience of installation and maintenance, can tightly wrap the submarine cable end, thereby significantly improving the waterproof effect, and the channel provided can be used for the extension of the net cover, thereby facilitating the connection of the net cover and the pull ring, so as to facilitate the laying of the submarine cable.

[0026] 2. The application can tightly wrap the submarine cable end by filling waterproof glue in the accommodating cavity, thereby forming an effective waterproof barrier, which greatly improves the waterproof performance of the submarine cable end in combination with the protection of the shell. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0028] Figure 1 The structure diagram of the semi-wet type aluminum-plastic composite tape submarine cable end protection device is shown in the specific embodiments of the utility model.

[0029] Figure 2 The cross-sectional view of the semi-wet type aluminum-plastic composite tape submarine cable end protection device is shown in the specific embodiments of the utility model. Figure 1

[0030] Figure 3 The structure diagram of the semi-wet type aluminum-plastic composite tape submarine cable end is shown in the specific embodiments of the utility model.

[0031] Figure 4 The structure diagram of the shell is shown in the specific embodiments of the utility model. Figure 1

[0032] The axial cross-sectional view of the shell is shown in the specific embodiments of the utility model. Figure 5 Figure 4

[0033] Figure 6 The axial cross-sectional view of the shell is shown in the specific embodiments of the utility model.​​​Figure 4 A radial cross-sectional view of the sleeve shown schematically;

[0034] Figure 7 For Figure 4 A structural schematic diagram of the unit block;

[0035] Explanation of reference signs:

[0036] 1, sleeve; 2, connecting assembly; 3, waterproof glue;

[0037] 21, nut; 22, bolt;

[0038] 101, accommodating cavity; 102, opening; 103, channel;

[0039] 1a, conical shell part; 1b, cylindrical part; 1c, first arc-shaped transition; 1d, butt joint plane; 1e, second arc-shaped transition;

[0040] 11, unit block; 1101, split plane; 1102, connecting hole; 1103, embedded groove. DETAILED DESCRIPTION

[0041] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, and therefore only serve as examples, and cannot limit the protection scope of the utility model.

[0042] First of all, it needs to be pointed out that in the following description, some orientation words involved in the technical scheme of the utility model for the purpose of clearly illustrating the utility model, such as the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are all analogously interpreted according to the orientation of the normal parts in the half-wet type aluminum-plastic composite tape submarine cable end protection device, and only serve to facilitate the description of the utility model and simplify the description, and are not intended to indicate or imply that the indicated device or element must have a specific orientation, structure and operation, and therefore cannot be understood as a limitation on the utility model.

[0043] In addition, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features.

[0044] In the present application, unless otherwise expressly specified and limited, the terms "mounting", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; can be direct connection, or indirect connection through intermediate medium, can be internal communication of two elements or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0045] In order to better understand the above technical solutions, the above technical solutions will be described in detail in the following in combination with the drawings and specific embodiments of the specification.

[0046] Embodiment:

[0047] As Figures 1 to 7 The application embodiment discloses a semi-wet type aluminum-plastic composite tape submarine cable end protection device, which is used for protecting the end of the semi-wet type aluminum-plastic composite tape submarine cable during laying, thereby improving the waterproof effect, and the specific structure comprises a sleeve shell 1 and a plurality of connecting assemblies 2.

[0048] The sleeve shell 1 is composed of a plurality of unit blocks 11 and is spliced together around an axis, and has high structural versatility, facilitating manufacturing and installation; and the sleeve shell 1 has a containing cavity 101 inside, one end of which is provided with an opening 102 for the submarine cable to extend into, and the other end is provided with a passage 103 for the net sleeve to extend out.

[0049] The plurality of connecting assemblies 2 are arranged one by one between adjacent unit blocks 11 and are used for detachably connecting the adjacent unit blocks 11.

[0050] The above technical solution has the following working principle:

[0051] First, the waterproof tape is wrapped around the cable core of the semi-wet type aluminum-plastic composite tape submarine cable end, then the heat-shrinkable cap is sleeved, and then the waterproof tape is wrapped again.

[0052] Finally, the plurality of unit blocks 11 are spliced together around the end of the semi-wet type aluminum-plastic composite tape submarine cable, and in the splicing process, the connection between the unit blocks 11 is ensured to be tight to avoid gaps, so as to ensure the waterproof performance of the sleeve shell 1, thereby wrapping the end of the semi-wet type aluminum-plastic composite tape submarine cable in the containing cavity 101, and then the converging end of the net sleeve is extended out of the sleeve shell 1 through the passage 103; then the adjacent unit blocks 11 are kept fastened through the locking of the plurality of connecting assemblies 2, so that the opening 102 is kept in close contact with the outer periphery of the submarine cable, and the converging end of the net sleeve is fully filled in the passage 103, thereby playing a sealing role to prevent seawater from penetrating along the axial direction.

[0053] The utility model discloses a plurality of unit blocks 11 can be assembled into a shell 1 on the spot, which is simple and convenient to operate, has high dismounting efficiency, improves the convenience of installation and maintenance, can tightly wrap the end of the submarine cable, thereby significantly improving the waterproof effect, and the channel 103 provided can be used for the extension of the net cover, thereby facilitating the connection between the net cover and the pull ring to facilitate the laying of the submarine cable.

[0054] In some embodiments, as shown in Figure 2 The waterproof glue 3 is filled in the accommodating cavity 101, and the filling of the waterproof glue 3 can tightly wrap the end of the submarine cable, thereby forming an effective waterproof barrier, which, in combination with the protection of the shell 1, greatly improves the waterproof performance of the end of the submarine cable.

[0055] In some embodiments, as shown in Figure 4 The shell 1 comprises a conical shell part 1a and a cylindrical part 1b, which are specifically arranged as follows:

[0056] The conical shell part 1a has a conical structure and is provided with a channel 103 in the center, which can guide the convergence of the net cover and avoid collision and friction between the net cover and the inner edge of the shell, and also helps to disperse stress, improve structural strength, and enhance the protection performance of the shell 1.

[0057] The cylindrical part 1b has a circular tube structure and is coaxially arranged at the bottom end of the conical shell part 1a, which is adapted to the shape of the submarine cable to ensure that the end of the submarine cable is well supported and protected in the shell 1, avoid the submarine cable being squeezed or deformed due to space mismatch, and also make the submarine cable bear force evenly in the cylindrical part 1b, which can uniformly disperse the force to the surrounding of the submarine cable, thereby reducing the risk of damage to the submarine cable.

[0058] Through the above design of the shell 1, the convergence of the net cover is guided, stress is dispersed, structural strength is improved, and the shape of the shell 1 is adapted to the shape of the submarine cable to ensure that the end of the submarine cable is well supported and protected in the shell 1, avoiding the submarine cable being squeezed or deformed due to space mismatch.

[0059] In some embodiments, as shown in Figure 4 And Figure 5 The conical shell part 1a and the cylindrical part 1b have a first arc-shaped transition 1c.

[0060] By setting the first arc-shaped transition 1c, a buffering effect is achieved, stress is uniformly dispersed, local stress is reduced, the overall structural stability is improved, and the connection between the two is avoided, making the entire shell 1 more smooth and integrated.

[0061] In some embodiments, as shown in Figure 2 And Figure 4As shown, the top end of the conical shell part 1a is provided with a butt joint plane 1d, which is perpendicular to the axis.

[0062] Specifically, the butt joint plane 1d provides a flat and regular contact surface, so that when it is in abutment with the connecting block, it can ensure that the contact between the two is close and uniform, avoiding the problem of loose or unstable connection caused by uneven contact surface.

[0063] Specifically, the design that the butt joint plane 1d is perpendicular to the axis makes the connecting block can be attached to the butt joint plane 1d along the axis direction, ensuring the accuracy of the direction and position of the connection, which helps to ensure the correct installation direction of the net cover and the pull ring, and avoids affecting the laying and use of the submarine cable due to installation deviation.

[0064] By setting the butt joint plane 1d, a flat contact surface is provided, which plays a positioning role and enhances the reliability of the connection.

[0065] Based on the above embodiment, as shown in the figure, Figure 4 The side surface of the conical shell part 1a has a second arc-shaped transition 1e between the butt joint plane 1d.

[0066] By setting the second arc-shaped transition 1e, a buffering effect is achieved, which can uniformly disperse stress and reduce the case of excessive local stress, improve the overall structural stability, and avoid abrupt connection between the two, making the entire sleeve shell 1 more smooth and integrated.

[0067] Based on the above embodiment, as shown in the figure, Figure 6 The two ends of the unit block 11 have split planes 1101, and a plurality of connecting holes 1102 are formed on the two sides of the outer surface of the unit block 11, which penetrate to the adjacent split planes 1101.

[0068] In this embodiment, the connecting assembly 2 includes a nut 21 and a bolt 22, and the shank of the bolt 22 is threadedly connected with the nut 21 after penetrating through the corresponding two connecting holes 1102.

[0069] Through the above setting, the stable connection between adjacent unit blocks 11 is ensured, and the structure is simple and compact, easy to disassemble and assemble, and convenient for practical application.

[0070] In this embodiment, a plurality of embedding grooves 1103 are formed on the outer surface of the unit block 11, and the connecting holes 1102 are one-to-one corresponding to the groove bottoms of the embedding grooves 1103, and the groove bottoms of the embedding grooves 1103 are parallel to the adjacent split planes 1101.

[0071] By setting the embedding grooves 1103, the connecting assembly 2 can be accommodated, thereby playing a protection role, ensuring the stability of the locking, and improving the structural compactness, ensuring the roundness of the outer periphery of the sleeve shell 1, and not being abrupt.

[0072] In the description of the present application, a large number of specific details are explained. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the present application.

[0073] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled person in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples, without contradiction.

[0074] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.

Claims

1. A semi-wet aluminum-plastic composite cable end protection device, characterized in that, include: The shell is composed of multiple unit blocks assembled around an axis, and the shell has an internal cavity, with an opening at one end for the submarine cable to be inserted and a channel at the other end for the net to be extended. Multiple sets of connecting components are arranged one-to-one between adjacent unit blocks to enable detachable connections between adjacent unit blocks.

2. The semi-wet aluminum-plastic composite cable end protection device according to claim 1, characterized in that, include: Waterproof adhesive is used to fill the cavity.

3. The semi-wet aluminum-plastic composite cable end protection device according to claim 1, characterized in that, The casing includes: The conical shell portion has a conical structure and the aforementioned channel is located in the center; The cylindrical part has a circular tube structure and is coaxially disposed at the bottom end of the conical shell part.

4. The semi-wet aluminum-plastic composite strip end protection device for submarine cables according to claim 3, characterized in that, There is a first arc-shaped transition between the conical shell portion and the cylindrical portion.

5. The semi-wet aluminum-plastic composite strip submarine cable end protection device according to claim 3, characterized in that, The top of the conical shell is provided with a mating plane, which is perpendicular to the axis.

6. The semi-wet aluminum-plastic composite strip submarine cable end protection device according to claim 5, characterized in that, The side of the conical shell has a second arc-shaped transition with the mating plane.

7. The semi-wet aluminum-plastic composite strip end protection device for submarine cables according to claim 3, characterized in that, The unit block has two mating planes at both ends, and multiple connecting holes are provided on both sides of the outer surface of the unit block, with the connecting holes extending to the adjacent mating planes; The connection component includes: Nut; The bolt or screw passes through the two corresponding connecting holes and is threaded into the nut.

8. The semi-wet aluminum-plastic composite strip submarine cable end protection device according to claim 7, characterized in that, The outer surface of the unit block has multiple embedding slots, and the connecting holes are correspondingly opened at the bottom of the embedding slots, and the bottom of the embedding slots is parallel to the adjacent splicing plane.

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