Longitudinal watertight rubber sheath composite shielding cable capable of resisting water pressure of 6.75 MPa

Abstract

The utility model discloses a longitudinal watertight rubber sheath composite shielding cable resistant to water pressure of 6.75 MPa. The longitudinal watertight rubber sheath composite shielding cable comprises a plurality of cable cores, and an inner shielding layer, an inner sheath layer, an outer shielding layer and an outer protection layer which are sequentially sleeved outside the cable cores from inside to outside, and a watertight layer is arranged between the cable cores and the inner shielding layer; the inner shielding layer adopts the glass fiber layer and the first aluminum foil layer to realize shielding without affecting the bending performance of the cable, the outer shielding layer adopts the copper wire layer, the reinforcing layer and the second aluminum foil layer to further realize shielding without affecting the bending performance of the cable, and the reinforcing layer is arranged and adopts silica gel, so that the bending performance of the cable is not affected. The silica gel has flexibility and does not influence the bending performance of the cable, and when the cable is bent, the pattern surface arranged on the inner wall of the reinforcing layer is attached to the copper wire layer, so that the influence of a gap on the shielding performance when the copper wire layer is bent is inhibited to a certain extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to power cable technical field especially relates to a water pressure resistance 6.75MPa longitudinal watertight rubber sheath composite shielded cable. BACKGROUND

[0002] Longitudinal watertight composite shielded cable is a kind of specially designed cable, with excellent waterproof and electromagnetic shielding performance, longitudinal watertight composite shielded cable can limit the ability of water pressure along the longitudinal end face of cable,

[0003] In complex electromagnetic interference radiation environment, if adopting steel tape armoring anti-interference layer can enhance shielding performance, but also can make the bending performance of cable reduce, if adopting copper wire and steel wire are alternately wound, when cable appears bending, copper wire and steel wire can produce gap, make shielding performance decline.

[0004] To solve the above technical deficiencies of prior art, a water pressure resistance 6.75MPa longitudinal watertight rubber sheath composite shielded cable needs to be designed. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a water pressure resistance 6.75MPa longitudinal watertight rubber sheath composite shielded cable.

[0006] A water pressure resistance 6.75MPa longitudinal watertight rubber sheath composite shielded cable, including several cable cores and the inner shielding layer, inner sheath layer, outer shielding layer and outer protective layer that are sequentially covered outside the cable core from inside to outside, water-tight layer is also provided between the cable core and the inner shielding layer;The inner shielding layer includes glass fiber layer and first aluminum foil layer that are sequentially covered outside the cable core from inside to outside;The outer shielding layer includes copper wire layer, reinforcing layer and second aluminum foil layer that are sequentially covered outside the inner sheath layer from inside to outside, the reinforcing layer adopts silica gel and its inner wall is provided with pattern surface;The outer protective layer includes steel wire layer and outer sheath layer that are sequentially covered outside the second aluminum foil layer from inside to outside.

[0007] Further, the pattern surface is corresponding with the pattern of copper wire layer.

[0008] Further, the glass fiber layer is woven by glass fiber, and the first aluminum foil layer and the second aluminum foil layer are both wound by single strip-shaped aluminum foil.

[0009] Further, the copper wire layer is woven by tinned copper wire, and the steel wire layer is woven by steel wire.

[0010] Further, the water-tight layer adopts foaming water-blocking belt.

[0011] Further, the inner sheath layer is made of silica gel, and the outer sheath layer is made of polyethylene.

[0012] Beneficial effects: the inner shielding layer of the utility model adopts glass fiber layer and first aluminum foil layer to realize shielding while not affecting the bending performance of the cable, the outer shielding layer adopts copper wire layer, reinforcing layer and second aluminum foil layer, further realizes shielding while not affecting the bending performance of the cable, through setting reinforcing layer and the reinforcing layer adopts silica gel, silica gel has flexibility, does not affect the performance of cable bending, when the cable bends, the pattern surface of the inner wall of reinforcing layer is attached to the copper wire layer, a certain degree of inhibiting the influence of the gap of copper wire layer when bending on shielding performance. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the structure schematic diagram of the cross section of the utility model composite shielding cable;

[0014] Fig. 2 It is the three-dimensional structure schematic diagram of the reinforcing layer in the outer shielding layer of the utility model;

[0015] In the drawing,

[0016] Cable core 1;Inner shielding layer 2;Inner sheath layer 3;Outer shielding layer 4;Outer protective layer 5;Waterproof layer 6. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of protection of the utility model.

[0018] Please refer to Figs. 1-2The embodiment provides a longitudinal water pressure-resistant 6.75MPa water-tight rubber sheath composite shielding cable, which comprises a plurality of cable cores 1 and an inner shielding layer 2, an inner sheath layer 3, an outer shielding layer 4 and an outer protective layer 5 which are sequentially sleeved outside the cable core 1 from inside to outside, the material of the inner sheath layer 3 is silica gel, the silica gel has wear resistance and flexibility, a water-tight layer 6 is further arranged between the cable core 1 and the inner shielding layer 2, the water-tight layer 6 adopts a foamed water-blocking tape, the inner shielding layer 2 comprises a glass fiber layer and a first aluminum foil layer which are sequentially sleeved outside the cable core 1 from inside to outside, the glass fiber layer is woven by glass fibers, the glass fiber layer has excellent shielding performance, the first aluminum foil layer is wound by a single strip-shaped aluminum foil, and the shielding performance of the cable is strengthened through the first aluminum foil layer, the outer shielding layer 4 comprises a copper wire layer, a reinforcing layer and a second aluminum foil layer which are sequentially sleeved outside the inner sheath layer 3 from inside to outside, the copper wire layer is woven by tinned copper wires, electromagnetic interference is shielded through the copper wire layer, the reinforcing layer is made of silica gel and is provided with a patterned surface on an inner wall, the patterned surface is corresponding to the pattern of the copper wire layer, the reinforcing layer is made of silica gel and has flexibility, so that the performance of the cable in bending is not affected, when the cable is bent, the patterned surface provided on the inner wall of the reinforcing layer is matched with the copper wire layer, the influence of the gap of the copper wire layer in bending on the shielding performance is inhibited to a certain extent, the second aluminum foil layer is wound by a single strip-shaped aluminum foil, the shielding performance of the cable is strengthened, the first aluminum foil layer and the second aluminum foil layer can protect the cable from corrosion and prolong the service life of the cable, and the outer protective layer 5 comprises a steel wire layer and an outer sheath layer which are sequentially sleeved outside the second aluminum foil layer from inside to outside, the material of the outer sheath layer is polyethylene, the steel wire layer is woven by steel wires, and mechanical protection, a large longitudinal tensile force and good magnetic field shielding performance are realized through the steel wire layer.

[0019] The utility model can realize water pressure resistance of 6.75MPa, realize composite shielding through the setting of the inner shielding layer 2 and the outer shielding layer 4, and realize shielding while not affecting the bending performance of the cable through the glass fiber layer and the first aluminum foil layer of the inner shielding layer 2, realize shielding while not affecting the bending performance of the cable through the copper wire layer, the reinforcing layer and the second aluminum foil layer of the outer shielding layer 4, and realize shielding while not affecting the bending performance of the cable through the setting of the reinforcing layer and the silica gel of the reinforcing layer, the patterned surface provided on the inner wall of the reinforcing layer is matched with the copper wire layer when the cable is bent, and the influence of the gap of the copper wire layer in bending on the shielding performance is inhibited to a certain extent.

[0020] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A hydrostatically pressure rated 6.75 MPa longitudinal watertight rubber jacketed composite shielded electrical cable, characterized by: The cable comprises a plurality of cable cores (1), an inner shielding layer (2), an inner sheath layer (3), an outer shielding layer (4) and an outer protective layer (5) which are sequentially sleeved outside the cable core (1) from inside to outside, and a watertight layer (6) is further arranged between the cable core (1) and the inner shielding layer (2); the inner shielding layer (2) comprises a glass fiber layer and a first aluminum foil layer which are sequentially sleeved outside the cable core (1) from inside to outside; the outer shielding layer (4) comprises a copper wire layer, a reinforcing layer and a second aluminum foil layer which are sequentially sleeved outside the inner sheath layer (3) from inside to outside, the reinforcing layer is made of silica gel and the inner wall of the reinforcing layer is provided with a patterned surface; the outer protective layer (5) comprises a steel wire layer and an outer sheath layer which are sequentially sleeved outside the second aluminum foil layer from inside to outside.

2. The composite shielded electrical cable of claim 1, wherein: The patterned surface corresponds to the pattern of the copper wire layer.

3. The composite shielded electrical cable of claim 1, wherein: The glass fiber layer is woven by glass fibers, and the first aluminum foil layer and the second aluminum foil layer are both wound by single strip-shaped aluminum foil.

4. The composite shielded electrical cable of claim 1, wherein: The copper wire layer is woven by tinned copper wire, and the steel wire layer is woven by steel wire.

5. The composite shielded electrical cable of claim 1, wherein: The watertight layer (6) is made of foamed water-blocking tape.

6. The composite shielded electrical cable of claim 1, wherein: The material of the inner sheath layer (3) is silica gel, and the material of the outer sheath layer is polyethylene.

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