Waterproof power cable

Abstract

The utility model relates to the technical field of power cables, and discloses a waterproof power cable, which comprises three conductor wire cores, rubber insulating layers respectively sleeved on the outer surfaces of the three conductor wire cores, and metal shielding layers respectively sleeved on the outer surfaces of the three rubber insulating layers, and is characterized in that an inner sheath is arranged on the outer surfaces of the three conductor wire cores, and an outer sheath is arranged on the outer surface of the inner sheath. The insulation mechanism is arranged in the inner sheath, the insulation mechanism isolates the three conductor wire cores and independently protects the three conductor wire cores, the insulation mechanism comprises a triangular prism block, the triangular prism block is arranged in the inner sheath, and the triangular prism block is arranged on the outer surfaces of the three conductor wire cores and isolates the three conductor wire cores. And air in the V-shaped grooves generated between the conical rubber rings in the cable outer protective sleeve supports the cable outer protective sleeve to resist pressure and disperse the pressure, so that the strength of the cable outer protective sleeve is improved, and the cable outer protective sleeve is firmer and not easy to damage.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to a waterproof power cable. Background Art

[0002] A cable is an electrical energy or signal transmission device, usually composed of several or several groups of wires. It is made of one or more mutually insulated conductors and an outer insulating protective layer. It transmits electricity or information from one place to another. It is usually a rope-like cable formed by twisting several or several groups of wires (at least two in each group). Each group of wires is insulated from each other and often twisted around a center. The entire outside is covered with a highly insulating covering.

[0003] Due to the particularity of cables, when they are laid in harsh environments, in order to protect the cables, an armor layer is generally added to the cable structure to prevent the cables from being damaged by external machinery. The reason why the cable armor layer can protect the cables is that the armor layer is generally wrapped with armor tape. Due to the high hardness of the armor tape, there are gaps when it is overlapped and wrapped. Under the influence of torsion and bending during the laying operation, the internal armor tape will produce greater lateral stress, causing the overlapping joints of the overlapping and wrapped armor tapes to slide and dislocate, resulting in larger overlapping gaps of the armor tapes. In addition, the insulation resistance is reduced due to moisture or water immersion, which is one of the important reasons for accidents during cable operation. In view of this, a waterproof power cable is proposed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a waterproof power cable, which has the advantages of positioning the armor tape to prevent its misalignment gap from becoming larger and causing water seepage, thereby reducing the waterproofness of the cable, and solves the problem that the armor tape inside the cable is easily misaligned, resulting in waterproof failure.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of positioning the armor tape to prevent the dislocation gap from becoming larger and causing water seepage, thereby reducing the waterproofness of the cable, the utility model provides the following technical solutions: a waterproof power cable, comprising three conductor cores, the outer surfaces of the three conductor cores are all covered with rubber insulation layers, and the outer surfaces of the three rubber insulation layers are all covered with metal shielding layers, characterized in that: the outer surfaces of the three conductor cores are provided with inner sheaths;

[0008] An isolation mechanism is arranged in the inner sheath, the isolation mechanism isolates the three conductor cores to protect them separately, the isolation mechanism comprises a triangular block, the triangular block is arranged in the inner sheath, the triangular block is arranged on the outer surface of the three conductor cores, and isolates them;

[0009] A waterproof mechanism is arranged outside the inner sheath, and is used for waterproofing the cable. The waterproof mechanism comprises a water-blocking yarn, and the water-blocking yarn is sleeved on the outer surface of the inner sheath;

[0010] The protection mechanism is arranged outside the inner sheath, and the protection mechanism protects the cable. The protection mechanism comprises a cable outer protective sheath, and the cable outer protective sheath is arranged on the outer surface of the inner sheath.

[0011] Preferably, the isolation mechanism further comprises a protective filling layer, and the protective filling layer is arranged on the outer surfaces of the three conductor cores.

[0012] Preferably, the waterproof mechanism further comprises a water-blocking layer, and the water-blocking layer is sleeved on the outer surface of the water-blocking yarn.

[0013] Preferably, the protection mechanism further comprises a rubber ring and a V-shaped groove, the rubber ring is arranged in the outer protective sleeve of the cable, the cross section of the rubber ring is arranged in a conical shape, and the gap between every two rubber rings is a V-shaped groove.

[0014] Preferably, the protection mechanism further includes three positioning posts and an armor belt, the three positioning posts are fixedly mounted on the inner surface of the rubber ring, the armor belt is arranged inside the rubber ring, and the armor belt is penetrated by the three positioning posts.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a waterproof power cable, which has the following beneficial effects:

[0017] 1. The waterproof power cable can protect the cable through the cable outer protective sheath, and the air inside the V-shaped groove generated between the conical rubber rings in the cable outer protective sheath supports the cable outer protective sheath to resist pressure, disperse the pressure, and improve the strength of the cable outer protective sheath, making it stronger and less prone to damage.

[0018] 2. The waterproof power cable has a positioning column fixedly installed by a rubber ring that penetrates the armor belt to protect it. The positioning column can also prevent the armor belt from being misplaced and causing gaps, thereby improving the protection performance of the armor belt.

[0019] 3. The waterproof power cable has double-layer protection for the cable through the water-blocking layer and the water-blocking yarn, which can effectively isolate the penetration of water and make it more convenient to improve its waterproof performance.

[0020] 4. The waterproof power cable isolates the conductor cores individually through the triangular blocks arranged in the inner sheath, so that they will not interfere with each other, thereby improving the transmission performance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a schematic diagram of the structure of a waterproof power cable of the utility model;

[0022] Figure 2 This is a longitudinal structural cross-sectional view of the cable of the utility model;

[0023] Figure 3 This is a cross-sectional view of the transverse structure of the cable of the utility model.

[0024] In the figure: 1. Cable outer protective sheath; 2. Rubber ring; 3. Positioning column; 4. Armor tape; 5. Water-blocking layer; 6. Water-blocking yarn; 7. Inner sheath; 8. Triangular block; 9. Protective filling layer; 10. Conductor core; 11. Rubber insulation layer; 12. Metal shielding layer; 13. V-groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-3 The utility model provides a new technical solution: a waterproof power cable, comprising three conductor cores 10, the outer surfaces of the three conductor cores 10 are all covered with rubber insulation layers 11, the outer surfaces of the three rubber insulation layers 11 are all covered with metal shielding layers 12, and the outer surfaces of the three conductor cores 10 are provided with inner sheaths 7;

[0027] An isolation mechanism is arranged in the inner sheath 7, and the isolation mechanism isolates the three conductor cores 10 to protect them separately. The isolation mechanism includes a triangular block 8, and the triangular block 8 is arranged in the inner sheath. The triangular block 8 is arranged on the outer surface of the three conductor cores 10 and isolates them;

[0028] A waterproof mechanism, which is arranged outside the inner sheath 7, and is used for waterproofing the cable. The waterproof mechanism comprises a water-blocking yarn 6, and the water-blocking yarn 6 is sleeved on the outer surface of the inner sheath;

[0029] The protection mechanism is arranged outside the inner sheath 7 , and protects the cable. The protection mechanism includes a cable outer protective sheath 1 , and the cable outer protective sheath 1 is arranged on the outer surface of the inner sheath 7 .

[0030] Furthermore, the isolation mechanism further includes a protective filling layer 9 , which is arranged on the outer surfaces of the three conductor cores 10 .

[0031] Furthermore, the waterproof mechanism also includes a water-blocking layer 5 , which is sleeved on the outer surface of the water-blocking yarn 6 .

[0032] Furthermore, the protection mechanism also includes a rubber ring 2 and a V-shaped groove 13 . The rubber ring 2 is arranged in the cable outer protective sleeve 1 . The cross section of the rubber ring 2 is conical, and the gap between every two rubber rings 2 is a V-shaped groove 13 .

[0033] Furthermore, the protection mechanism also includes three positioning columns 3 and an armor belt 4. The three positioning columns 3 are all fixedly installed on the inner surface of the rubber ring 2. The armor belt 4 is arranged inside the rubber ring 2, and the armor belt 4 is penetrated by the three positioning columns 3. When the waterproof power cable is in use, the cable is protected by the cable outer protective sheath 1, and the air inside the V-shaped groove 13 generated between the rubber rings 2 arranged in a cone shape inside the cable outer protective sheath 1 supports the cable outer protective sheath 1 to resist pressure and prevent local damage caused by excessive pressure. The positioning columns 3 fixedly installed on the rubber ring 2 penetrate the armor belt 4 to protect it, and the positioning columns 3 can prevent the armor belt 4 from being misplaced and generating gaps. If gaps appear in the armor belt 4 and cause water seepage, it can be isolated by the water-blocking layer 5. If the water-blocking layer 5 fails to successfully block water, the water will be absorbed by the water-blocking yarn 6 inside it, and the conductor will be blocked by the triangular block 8 arranged in the inner sheath 7. The wire cores 10 are individually isolated so that they will not interfere with each other, and a single conductor wire core can be replaced individually. The waterproof power cable can protect the cable through the cable outer protective sheath, and the air inside the V-shaped groove generated between the rubber rings arranged in a cone shape in the cable outer protective sheath supports the cable outer protective sheath to resist pressure, disperse the pressure, and improve the strength of the cable outer protective sheath, making it stronger and less prone to damage. The positioning column fixed by the rubber ring passes through the armor belt to protect it, and the positioning column can be used to prevent the armor belt from being misplaced to produce gaps, thereby improving the protection performance of the armor belt. The cable is double-protected by the water-blocking layer and the water-blocking yarn, which can effectively block water penetration, making it more convenient to improve its waterproof performance, and the conductor cores are individually isolated by the triangular blocks arranged in the inner sheath so that they will not interfere with each other, thereby improving the transmission performance of the cable.

[0034] Working principle: When the waterproof power cable is in use, the cable is protected by the cable outer protective sheath 1, and the air inside the V-shaped groove 13 generated between the rubber rings 2 arranged in a cone shape in the cable outer protective sheath 1 supports the cable outer protective sheath 1 to resist pressure and prevent local damage caused by excessive pressure, and the positioning column 3 fixedly installed by the rubber ring 2 penetrates the armor belt 4 to protect it, and the positioning column 3 can prevent the armor belt 4 from being misplaced and generating gaps. If gaps appear in the armor belt 4 and cause water seepage, it can be isolated by the water-blocking layer 5. If the water-blocking layer 5 fails to successfully block water, the water will be absorbed by the water-blocking yarn 6 inside it, and the conductor cores 10 are individually isolated by the triangular blocks 8 arranged in the inner sheath 7 so that they will not interfere with each other, and a single conductor core can be replaced individually.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof power cable, comprising three conductor cores (10), the outer surfaces of the three conductor cores (10) are all covered with rubber insulation layers (11), and the outer surfaces of the three rubber insulation layers (11) are all covered with metal shielding layers (12), characterized in that: The outer surfaces of the three conductor cores (10) are provided with inner sheaths (7); An isolation mechanism is arranged in the inner sheath (7), the isolation mechanism isolates the three conductor cores (10) to protect them separately, the isolation mechanism comprises a triangular block (8), the triangular block (8) is arranged in the inner sheath, the triangular block (8) is arranged on the outer surface of the three conductor cores (10), and isolates them; A waterproof mechanism, which is arranged outside the inner sheath (7), and is used for waterproofing the cable, and comprises a water-blocking yarn (6), and the water-blocking yarn (6) is sleeved on the outer surface of the inner sheath; The protective mechanism is arranged outside the inner sheath (7) and protects the cable. The protective mechanism comprises an outer cable protective sheath (1) and the outer cable protective sheath (1) is arranged on the outer surface of the inner sheath (7).

2. A waterproof power cable according to claim 1, characterized in that: The insulating mechanism further comprises a protective filling layer (9), wherein the protective filling layer (9) is arranged on the outer surfaces of the three conductor cores (10).

3. A waterproof power cable according to claim 1, characterized in that: The waterproof mechanism further comprises a water-blocking layer (5), which is sleeved on the outer surface of the water-blocking yarn (6).

4. A waterproof power cable according to claim 1, characterized in that: The protection mechanism also includes a rubber ring (2) and a V-shaped groove (13); the rubber ring (2) is arranged in the cable outer protective sleeve (1); the cross section of the rubber ring (2) is arranged in a conical shape, and the gap between every two rubber rings (2) is a V-shaped groove (13).

5. A waterproof power cable according to claim 4, characterized in that: The protection mechanism further comprises three positioning columns (3) and an armor belt (4); the three positioning columns (3) are all fixedly mounted on the inner surface of the rubber ring (2); the armor belt (4) is arranged inside the rubber ring (2), and the armor belt (4) is penetrated by the three positioning columns (3).

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