Flexible submarine cable filling strip

Abstract

The utility model provides a flexible submarine cable filling strip, and relates to the technical field of submarine cable filling strips. The utility model is used for solving the technical problems that the cable cores are clamped in the center by the filling strip provided by the prior art, and the cable cores are easy to extrude to deform and damage if the seabed water pressure is too large. A flexible submarine cable filling strip comprises a cable sheath, insulating layers and conductive copper wires, the conductive copper wires are sleeved with the insulating layers, a plurality of insulating layers wrapping the conductive copper wires are arranged in the cable sheath in a penetrating mode, the flexible submarine cable filling strip further comprises a filling strip body and a clamping block, the filling strip body is arranged in the cable sheath, one side of the filling strip body is fixedly connected with the clamping block, and the other side of the filling strip body is fixedly connected with the clamping block. And a clamping groove matched with the clamping block is formed in the other side of the filling strip. The clamping blocks are clamped with the clamping grooves of the adjacent filling strips, so that the three filling strips jointly form a ring shape to wrap the three insulating layers, the hollow structures and the compression-resistant holes provide enough space for deformation of the filling strips, the compression-resistant holes become smaller when the filling strips extrude one another, and the effect of avoiding mutual extrusion among wire cores is achieved.

Description

Technical Field

[0001] The utility model provides a flexible submarine cable filling strip, and relates to the technical field of submarine cable filling strips. Background Art

[0002] Submarine cables are cables laid on the seabed for telecommunications and power transmission. Submarine cables are divided into submarine communication cables and submarine power cables. Optical-electric composite submarine cables are a combination of communication optical cables and power cables, which can transmit communication signals and electricity at the same time. The optical cables in the composite submarine cables are made of optical fiber and transmit telephone and Internet signals. The pressure of seawater and the irregularity of the seabed topography may cause the submarine cable to break or be damaged on the seabed. The submarine cable filler strips play a role in protecting the submarine cable from water pressure damage and mechanical damage.

[0003] The patent with the patent authorization announcement number CN220869456U discloses a ventilation device for tunnel excavation. The patent uses a first clamping arm, a second clamping arm, a first extension section and a second extension section to jointly enclose a clamping cavity for clamping an optical cable with an openable end, so that the optical cable is clamped at the top of the clamping cavity, and the lower end of the clamping cavity can be opened and closed, and the optical cable can be directly pushed into the clamping cavity, which is easy to operate. However, the filling strip provided by the patent still has shortcomings in actual use. Since the filling strip clamps the cable core at the center, if the seabed water pressure is too high, it is easy to cause squeezing between the cable cores, and the cable cores are easily squeezed and deformed, causing them to break.

[0004] Therefore, it is necessary to provide a flexible submarine cable filling strip that can prevent the cores from squeezing each other. Utility Model Content

[0005] In order to overcome the disadvantage that the filling strip provided by the existing patent clamps the cable core at the center, which may easily cause the cable cores to be squeezed and deformed and damaged if the seabed water pressure is too high, the utility model provides a flexible submarine cable filling strip that avoids mutual squeezing between the cores.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides the following technical solutions: a flexible submarine cable filling strip, comprising a cable sheath, an insulating layer and a conductive copper wire, the conductive copper wire is sheathed with an insulating layer on the outside, and a plurality of insulating layers wrapped around the conductive copper wire are passed through the cable sheath, and also comprises a filling strip and a card block, a filling strip is arranged in the cable sheath, a card block is fixedly connected to one side of the filling strip, and a card groove which fits with the card block is opened on the other side of the filling strip, and a plurality of filling strips are spliced ​​to form a pressure-resistant hole at the center thereof.

[0007] Furthermore, the three filling strips are clamped with adjacent clamping slots through clamping blocks to form a ring shape, and the insulating layer is clamped and fixed by two adjacent filling strips.

[0008] Furthermore, the middle portion of the filling strip is a hollow structure.

[0009] Furthermore, the filling strip is made of soft PVC material or soft PE material.

[0010] Furthermore, it also includes an inner contact copper sheet penetrating two adjacent insulating layers, an outer contact copper sheet is fixedly connected to the inner contact copper sheet, and the outer contact copper sheet is in contact with the cable sheath.

[0011] Furthermore, the outer contact copper sheet is an arc-shaped H-shape.

[0012] Furthermore, support frames are installed on both sides of the middle of the filling strip.

[0013] Compared with the prior art, the utility model has the following advantages: 1. By connecting the card block with the card slot of the adjacent filling strip, the three filling strips together form a ring to wrap the three insulation layers. The hollow structure and the pressure-resistant holes provide sufficient space for the deformation of the filling strips. When the filling strips are squeezed against each other, the pressure-resistant holes become smaller, thereby achieving the effect of avoiding mutual squeezing between the wire cores.

[0014] 2. The inner contact copper sheet absorbs the heat of the insulating layer and the conductive copper wire, and transfers the heat to the outer contact copper sheet, which then transfers the heat to the cable sheath. The seawater absorbs the heat on the cable sheath, achieving the effect of quickly cooling the conductive copper wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 The utility model is a three-dimensional cross-sectional structural schematic diagram of the filling strip, the insulating layer and the conductive copper wire.

[0017] Figure 3 The utility model is a three-dimensional cross-sectional structural diagram of the filling strip, the external contact copper sheet and the support frame. Figure numbers: 1: cable sheath, 2: filling strip, 3: insulation layer, 4: conductive copper wire, 5: pressure-resistant hole, 6: clamping block, 7: clamping slot, 8: external contact copper sheet, 9: internal contact copper sheet, 10: support frame. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Embodiment 1: A flexible submarine cable filling strip, see Figure 1 and Figure 2As shown, it includes a cable sheath 1, an insulating layer 3 and a conductive copper wire 4. The conductive copper wire 4 for conducting electricity is externally sheathed with an insulating layer 3 for blocking current leakage. Three insulating layers 3 wrapped around the conductive copper wire 4 are inserted in the cable sheath 1. It also includes a filling strip 2 and a clamping block 6. Three filling strips 2 are arranged in the cable sheath 1. The middle part of the filling strip 2 is a hollow structure, which provides sufficient deformation space for the filling strip 2 and reduces the production cost. The filling strip 2 is made of soft PVC material or soft PE material, which is more environmentally friendly. A clamping block 6 is fixedly connected to one side of the filling strip 2 by injection molding, and a clamping groove 7 that fits with the clamping block 6 is opened on the other side of the filling strip 2. After multiple filling strips 2 are spliced, a pressure-resistant hole 5 is formed at the center thereof. The three filling strips 2 are clamped with adjacent clamping grooves 7 through the clamping block 6 to form a ring together, and the insulating layer 3 is clamped and fixed by two adjacent filling strips 2.

[0020] When assembling the submarine cable, the conductive copper wire 4 wrapped with the insulating layer 3 is placed between the two filling strips 2. By engaging the clamping block 6 with the clamping slot 7 of the adjacent filling strip 2, the two adjacent filling strips 2 are clamped and fixed together with the insulating layer 3, and the three filling strips 2 are formed into a ring, and then the cable sheath 1 is wrapped around the outside of the ring formed by the filling strips 2. When the submarine cable is placed on the seabed, the seawater pressure squeezes the cable sheath 1. At this time, the filling strip 2 is compressed and deformed. The hollow structure and the pressure-resistant hole 5 provide sufficient space for the deformation of the filling strip 2. The filling strips 2 squeeze each other to make the pressure-resistant hole 5 smaller, the force on the filling strip 2 and the conductive copper wire 4 itself is small, and no direct pressure is generated between the insulating layer 3 of the conductive copper wire 4, which plays a protective role on the insulating layer 3. When repairing the submarine cable, by sliding a single filling strip 2 in the clamping slot 7 of the adjacent filling strip 2 through the clamping block 6, the excessively deformed filling strip 2 can be taken out and replaced.

[0021] Example 2: Based on Example 1, refer to Figure 3 As shown, it also includes an inner contact copper sheet 9 for heat conduction that penetrates two adjacent insulating layers 3 together, and an outer contact copper sheet 8 for heat dissipation is fixedly connected to the inner contact copper sheet 9. The outer contact copper sheet 8 is in contact with the inner wall of the cable sheath 1, and the outer contact copper sheet 8 is an arc-shaped H-shape so that the outer contact copper sheet 8 is fixed between two adjacent filling strips 2.

[0022] When the submarine cable is in use, the conductive copper wire 4 will generate heat. At this time, the heat of the insulating layer 3 and the conductive copper wire 4 will be absorbed by the inner contact copper sheet 9, and the heat will be transferred to the outer contact copper sheet 8. The heat will be transferred to the cable sheath 1 through the outer contact copper sheet 8. The heat on the cable sheath 1 will be absorbed by seawater, so that the conductive copper wire 4 will be cooled down quickly.

[0023] See also Figure 3 As shown, support frames 10 are installed on both sides of the middle of the filling strip 2 by bonding.

[0024] The support frame 10 can strengthen the strength of the filling strip 2 itself to better resist the seawater pressure and prevent the filling strip 2 from being easily compressed and deformed.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A flexible submarine cable filling strip, comprising a cable sheath (1), an insulating layer (3) and a conductive copper wire (4), wherein the conductive copper wire (4) is sheathed with an insulating layer (3) on the outside, and a plurality of insulating layers (3) wrapping the conductive copper wire (4) are inserted into the cable sheath (1), characterized in that: The cable sheath (1) further comprises a filling strip (2) and a clamping block (6). The filling strip (2) is arranged in the cable sheath (1), the clamping block (6) is fixedly connected to one side of the filling strip (2), and a clamping groove (7) which fits with the clamping block (6) is provided on the other side of the filling strip (2). After a plurality of filling strips (2) are spliced ​​together, a pressure-resistant hole (5) is formed at their center.

2. A flexible submarine cable filling strip according to claim 1, characterized in that: The three filling strips (2) are clamped with adjacent clamping grooves (7) through a clamping block (6) to form a ring shape, and the insulating layer (3) is clamped and fixed by two adjacent filling strips (2).

3. A flexible submarine cable filling strip according to claim 1, characterized in that: The middle part of the filling strip (2) is a hollow structure.

4. A flexible submarine cable filling strip according to claim 1, characterized in that: The filling strip (2) is made of soft PVC material or soft PE material.

5. A flexible submarine cable filling strip according to claim 1, characterized in that: It also comprises an inner contact copper sheet (9) which penetrates two adjacent insulating layers (3) together, an outer contact copper sheet (8) being fixedly connected to the inner contact copper sheet (9), and the outer contact copper sheet (8) is in contact with the cable sheath (1).

6. A flexible submarine cable filling strip according to claim 5, characterized in that: The external contact copper sheet (8) is an arc-shaped H-shape.

7. A flexible submarine cable filling strip according to claim 1, characterized in that: Support frames (10) are installed on both sides of the middle of the filling strip (2).

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