Novel corrosion-resistant insulated cable

Abstract

The utility model relates to a novel corrosion-resistant insulated cable, which comprises a plurality of conductors, a first insulating layer coated outside the conductors, a waterproof layer coated outside the first insulating layer, a same second insulating layer coated outside the waterproof layers of the plurality of conductors, and fillers filled in gaps between the second insulating layer and the waterproof layers. The outer side of the second insulating layer is coated with a first inner sheath, the section of the first inner sheath is in a gear shape, a steel wire rope is clamped in a tooth groove of the first inner sheath, the outer side of the first inner sheath is coated with a second inner sheath, the inner side of the second inner sheath is provided with a protruding strip structure abutting against the tooth groove of the first inner sheath and the steel wire rope, and the outer side of the second inner sheath is coated with an armor layer. The outer side of the armor layer is coated with a first anti-corrosion coating, the outer side of the first anti-corrosion coating is coated with a zinc wire braid layer, the outer side of the zinc wire braid layer is coated with an outer sheath, and the outer side of the outer sheath is coated with a second anti-corrosion coating. The cable is good in insulation and anti-corrosion performance and long in service life.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to a novel corrosion-resistant insulated cable. Background Art

[0002] A cable is usually a rope-like cable formed by stranding several or several groups of wires. Each group of wires is insulated from each other and twisted around a center. The whole is covered with a highly insulating covering layer. It is mostly erected in the air or installed underground or underwater for telecommunications or power transmission. Cables laid in many places are in a humid, acidic or alkaline environment for a long time. However, the corrosion resistance of most cables is average. After a long time, pitted holes will appear on the outer sheath of the cable. After a period of time, the sheath will be penetrated by corrosion resistance, and the internal circuit will continue to be corroded, which greatly affects the use of the cable and shortens the service life of the cable. Therefore, it is necessary to study a novel corrosion-resistant insulated cable. Summary of the Invention

[0003] The utility model aims to solve the problem of poor corrosion resistance of cables in the prior art, and provides a novel corrosion-resistant insulated cable.

[0004] To achieve the above object, the utility model adopts the following technical solutions: A novel corrosion-resistant insulated cable includes a plurality of conductors. A first insulating layer is coated on the outer side of the conductors. A waterproof layer is coated on the outer side of the first insulating layer. The waterproof layers of the plurality of conductors are coated with the same second insulating layer on the outer side. The gap between the second insulating layer and the waterproof layer is filled with a filler. A first inner sheath is coated on the outer side of the second insulating layer, and the cross-section of the first inner sheath is gear-shaped. A steel wire rope is placed in the tooth grooves of the first inner sheath. A second inner sheath is coated on the outer side of the first inner sheath, and a rib structure that abuts against the tooth grooves and the steel wire rope of the first inner sheath is arranged on the inner side of the second inner sheath. An armor layer is coated on the outer side of the second inner sheath. A first anti-corrosion coating is coated on the outer side of the armor layer. A zinc wire braided layer is coated on the outer side of the first anti-corrosion coating. An outer sheath is coated on the outer side of the zinc wire braided layer. A second anti-corrosion coating is coated on the outer side of the outer sheath.

[0005] Specifically, the filler is polyurethane foam.

[0006] Specifically, the steel wire rope is a galvanized steel wire rope.

[0007] Specifically, both the first anti-corrosion coating and the second anti-corrosion coating are anti-corrosion asphalt layers.

[0008] Specifically, the first inner sheath is a polyvinyl chloride sheath.

[0009] Specifically, the second inner sheath is a high-density polyethylene sheath.

[0010] Specifically, the outer sheath is a polyurethane sheath.

[0011] The beneficial effects of the present utility model are as follows: By providing the first insulating layer, the second insulating layer, and the first inner sheath, the second inner sheath, and the outer sheath with insulating effects, the insulating performance of the cable is greatly improved; by providing the first inner sheath with a toothed structure and the steel wire rope, the tensile strength and compressive strength of the cable can be significantly improved, and the deformation or damage caused by external forces during installation and use can be reduced; by providing the zinc wire braid layer and the first anti-corrosion coating, the zinc wire braid layer serves as a sacrificial anode. When the exposed part of the cable comes into contact with a corrosive medium, zinc will be preferentially corroded without damaging the metal inside the cable. The first anti-corrosion coating can further reduce the penetration of moisture and other corrosive media and improve the overall anti-corrosion effect; by providing the second anti-corrosion coating, a dense physical barrier can be formed on the outside of the cable, effectively blocking the penetration of moisture, oxygen, and corrosive substances into the cable interior, thereby reducing the risk of the cable being corroded. The present utility model has good overall insulation and anti-corrosion performance and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] In the figure: 1 - conductor; 2 - first insulating layer; 3 - waterproof layer; 4 - second insulating layer; 5 - filler; 6 - first inner sheath; 7 - steel wire rope; 8 - second inner sheath; 9 - armor layer; 10 - first anti-corrosion coating; 11 - zinc wire braid layer; 12 - outer sheath; 13 - second anti-corrosion coating;

[0014] The following will be described in detail with reference to the embodiments of the present utility model and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present utility model will be further described below with reference to the drawings and embodiments:

[0016] As Figure 1 shown, a new type of corrosion-resistant insulated cable includes a plurality of conductors 1. The outside of the conductor 1 is coated with a first insulating layer 2. The outside of the first insulating layer 2 is coated with a waterproof layer 3. The outside of the waterproof layer 3 of the plurality of conductors 1 is coated with the same second insulating layer 4. The gap between the second insulating layer 4 and the waterproof layer 3 is filled with a filler 5. The outside of the second insulating layer 4 is coated with a first inner sheath 6, and the cross-section of the first inner sheath 6 is gear-shaped. A steel wire rope 7 is placed in the tooth grooves of the first inner sheath 6. The outside of the first inner sheath 6 is coated with a second inner sheath 8, and a rib structure that abuts against the tooth grooves of the first inner sheath 6 and the steel wire rope 7 is provided on the inner side of the second inner sheath 8. The outside of the second inner sheath 8 is coated with an armor layer 9. The outside of the armor layer 9 is coated with a first anti-corrosion coating 10. The outside of the first anti-corrosion coating 10 is coated with a zinc wire braid layer 11. The outside of the zinc wire braid layer 11 is coated with an outer sheath 12. The outside of the outer sheath 12 is coated with a second anti-corrosion coating 13.

[0017] The first insulating layer 2, the second insulating layer 4, and the first inner sheath 6, the second inner sheath 8, and the outer sheath 12 with insulating effects are provided, greatly improving the insulation performance of the cable.

[0018] The zinc wire braided layer 11 is provided. The zinc wire braided layer 11 serves as a sacrificial anode. When the exposed part of the cable comes into contact with the corrosive medium, zinc will be preferentially corroded and will not damage the metal inside the cable; the zinc wire braided layer 11 can also serve as a physical barrier to reduce the possibility of the corrosive medium directly contacting the internal armor layer 9 of the cable. The first anti-corrosion coating 10 between the zinc wire braided layer 11 and the armor layer 9 can further reduce the penetration of moisture and other corrosive media and improve the overall anti-corrosion effect.

[0019] The filler 5 is polyurethane foam. The polyurethane foam is filled in the voids inside the cable, which can not only provide insulation performance but also play a role in moisture protection.

[0020] The steel wire rope 7 is a galvanized steel wire rope. Using the steel wire rope 7 in combination with the toothed first inner sheath 6 can significantly improve the tensile strength and compressive strength of the cable, reduce deformation or damage caused by external forces during installation and use. The steel wire rope 7 can serve as a reinforcement to help the cable withstand greater tensile forces; at the same time, the toothed design increases the friction between the first inner sheath 6 and the steel wire rope 7, which helps to maintain the integrity of the internal structure when the cable is bent and reduces internal damage caused by repeated bending; the toothed structure can effectively fix the position of the steel wire rope 7 and reduce the relative sliding between internal components when the cable is stretched or bent, thereby improving the overall structural stability of the cable; the steel wire rope 7 is treated with galvanized anti-corrosion, which can enhance its corrosion resistance and thus improve the durability of the entire cable.

[0021] Both the first anti-corrosion coating 10 and the second anti-corrosion coating 13 are anti-corrosion asphalt layers. Setting the first anti-corrosion coating 10 can further reduce the penetration of moisture and other corrosive media and improve the overall anti-corrosion effect. Setting the second anti-corrosion coating 13 can form a dense physical barrier on the outer side of the cable, effectively blocking the penetration of moisture, oxygen, and corrosive substances into the cable interior, thereby reducing the risk of the cable being corroded; at the same time, anti-corrosion asphalt has good chemical stability and can resist the erosion of many chemical substances, helping to protect the cable from chemical corrosion; by reducing the corrosion and damage to the cable, the anti-corrosion asphalt layer can help extend the service life of the cable and reduce the frequency of maintenance and replacement.

[0022] The first inner sheath 6 is a PVC sheath. The PVC sheath has good weather resistance and chemical resistance. It can provide a good physical barrier to prevent moisture and corrosive substances from entering the cable interior. The second inner sheath 8 is a high-density polyethylene sheath. The high-density polyethylene sheath is a material with good corrosion resistance and chemical resistance and is suitable for a variety of environmental conditions. The outer sheath 12 is a polyurethane sheath. The polyurethane sheath has excellent abrasion resistance and chemical resistance and is suitable for applications that require higher mechanical strength and corrosion resistance.

[0023] The utility model has good insulation and corrosion protection performance and a long service life.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0026] In the present utility model, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium. It may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] The above has made an exemplary description of the present utility model in conjunction with the drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present utility model, or directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A novel corrosion-resistant insulated cable, comprising a plurality of conductors (1), characterized in that, A first insulating layer (2) is coated on the outside of the conductor (1), a waterproof layer (3) is coated on the outside of the first insulating layer (2), a second insulating layer (4) coats the outside of the waterproof layers (3) of a plurality of conductors (1), a filler (5) is filled in the gap between the second insulating layer (4) and the waterproof layer (3), a first inner sheath (6) is coated on the outside of the second insulating layer (4), and the cross-section of the first inner sheath (6) is gear-shaped. A steel wire rope (7) is clamped in the tooth grooves of the first inner sheath (6). A second inner sheath (8) is coated on the outside of the first inner sheath (6), and a rib structure that abuts against the tooth grooves of the first inner sheath (6) and the steel wire rope (7) is provided on the inner side of the second inner sheath (8). An armor layer (9) is coated on the outside of the second inner sheath (8), a first anti-corrosion coating (10) is coated on the outside of the armor layer (9), a zinc wire braided layer (11) is coated on the outside of the first anti-corrosion coating (10), an outer sheath (12) is coated on the outside of the zinc wire braided layer (11), and a second anti-corrosion coating (13) is coated on the outside of the outer sheath (12).

2. The novel corrosion-resistant insulated cable according to claim 1, characterized in that, The filler (5) is polyurethane foam.

3. A novel corrosion-resistant insulated cable according to claim 1, characterized in that, The steel wire rope (7) is a galvanized steel wire rope.

4. A novel corrosion-resistant insulated cable according to claim 1, characterized in that, Both the first anti-corrosion coating (10) and the second anti-corrosion coating (13) are anti-corrosion asphalt layers.

5. A novel corrosion-resistant and insulated cable according to claim 1, characterized in that, The first inner sheath (6) is a polyvinyl chloride sheath.

6. The novel corrosion-resistant insulated cable according to claim 1, characterized in that, The second inner sheath (8) is a high-density polyethylene sheath.

7. A novel corrosion-resistant insulated cable according to claim 1, characterized in that, The outer sheath (12) is a polyurethane sheath.

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