CN213241985U - Environment-friendly waterproof high-pressure-bearing cable - Google Patents

Abstract

The utility model provides an environment-friendly waterproof high-pressure-bearing cable, which comprises insulated wire cores, wherein the insulated wire cores are provided with a plurality of strands which are twisted into a cable core; a filling layer is arranged in a cable core gap formed by the multiple strands of insulated wires; and a water-resistant layer, a welding protection layer, a pressure-bearing layer, a moisture-proof layer and an outer sheath are sequentially arranged outside the cable core. A waterproof high pressure-bearing cable of environmental protection in insulating adopt there is not steamed low fire-retardant irradiation cross-linked polyolefin of cigarette, it has excellent electrical property and physical and mechanical properties, and has characteristics such as there is not steamed low cigarette, fire-retardant, environmental protection, ageing-resistant. The safe operation of the cable under the severe conditions can be ensured, and the cable is environment-friendly.

Description

Environment-friendly waterproof high-pressure-bearing cable

Technical Field

The utility model belongs to the technical field of wire and cable, especially, relate to a waterproof high pressure-bearing cable of environmental protection.

Background

The wire and cable is widely applied to various fields such as petrochemical industry, building, electric power engineering and the like as the national economy pillar industry, the service environment is relatively severe in most occasions, and particularly for the power cable, the characteristics of compression resistance, water resistance, environmental protection and the like are required due to different service environments besides the electrical performance required by the power cable.

For power cables, with the development of 'cable-in-the-ground' engineering in various places, most cables need to be used underground, and for areas without conditions such as cable trench construction, pipeline construction and the like, the pressure-bearing and waterproof capabilities of buried cables need to be more excellent than those of ordinary cables, so that a cable with waterproof, high pressure-bearing and environment-friendly properties is urgently needed.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a waterproof high pressure-bearing cable of environmental protection has characteristics such as excellent high pressure-bearing, waterproof, environmental protection, anti-aging mouse baits, can the wide application do not possess power supply occasions such as construction cable pit, cable duct in the area.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the environment-friendly waterproof high-pressure-bearing cable comprises an insulating wire core, wherein multiple strands of insulating wire cores are twisted into a cable core;

a filling layer is arranged in a cable core gap formed by the multiple insulated cable cores;

and a water-resistant layer, a welding protection layer, a pressure-bearing layer, a moisture-proof layer and an outer sheath are sequentially arranged outside the cable core.

Furthermore, the insulating wire core comprises a plurality of strands of twisted copper conductors and an insulating layer coated on the surfaces of the copper conductors.

Further, the insulating layer comprises a halogen-free low-smoke flame-retardant irradiation crosslinking polyolefin insulating layer.

Further, the filler of the filling layer comprises filling water-blocking expansion yarns.

Furthermore, the water-blocking layer comprises a plurality of layers of water-blocking expansion belts arranged outside the cable core.

Further, the welding protection layer comprises a halogen-free low-smoke flame-retardant belt.

Furthermore, the bearing layer is a stainless steel bearing layer and is welded outside the welding protection layer by using a seamless steel pipe welding technology.

Further, the moisture-proof layer comprises an aluminum-plastic composite belt longitudinally welded on the surface of the bearing layer.

Further, the material used for the outer sheath includes at least one of high-density polyolefin material and high-density polyethylene.

Compared with the prior art, a waterproof high pressure-bearing cable of environmental protection have following advantage:

(1) a waterproof high pressure-bearing cable of environmental protection in insulating adopt there is not steamed low fire-retardant irradiation cross-linked polyolefin of cigarette, it has excellent electrical property and physical and mechanical properties, and has characteristics such as there is not steamed low cigarette, fire-retardant, environmental protection, ageing-resistant. The safe operation of the cable under the severe conditions can be ensured, and the cable is environment-friendly.

(2) A waterproof high pressure-bearing cable of environmental protection in filling material choose for use the yarn that blocks water, can guarantee that the cable is after suffering external damage and intaking, water does not stretch to the outside, reduces the influence of humidity to the cable insulation.

(3) A waterproof high pressure-bearing cable of environmental protection in the bearing layer adopt continuous welding's seamless steel pipe, adopt the embossing technique on the steel pipe surface, when guaranteeing that the cable can bear external stronger pressure, guarantee that its bending property is not influenced.

(4) A waterproof high pressure-bearing cable of environmental protection indulge outside the pressure-bearing layer and wrap one deck plastic-aluminum composite belt waterproof layer outward, can guarantee that the cable soaks the condition in aqueous for a long time, moisture can be with moisture and stainless steel pressure-bearing layer separately after oversheath infiltration cable body, guarantees the life on stainless steel pressure-bearing layer to improve the life of cable.

(5) A waterproof high pressure-bearing cable of environmental protection in outer sheath adopt high density to have no steamed low cigarette flame retardant polyolefin material, have characteristics such as prevent moisture infiltration, there is not steamed low cigarette, fire-retardant, environmental protection.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is the embodiment of the utility model provides an environmental protection waterproof high pressure-bearing cable structure sketch map.

Description of reference numerals:

1-a copper conductor; 2-an insulating layer; 3-a filling layer; 4-water-blocking expansion band; 5-welding a protective layer; 6-a pressure bearing layer; 7-a moisture barrier; 8-outer sheath.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the environment-friendly waterproof high-pressure-bearing cable comprises an insulating wire core, wherein multiple strands of insulating wire cores are twisted into a cable core;

a filling layer 3 is arranged in a cable core gap formed by the multiple insulated cable cores;

and a water-resistant layer, a welding protection layer 5, a pressure bearing layer 6, a moisture-proof layer 7 and an outer sheath 8 are sequentially arranged outside the cable core.

The insulated wire core comprises a stranded copper conductor 1 and an insulating layer 2 coated on the surface of the copper conductor 1.

The insulating layer 2 comprises a halogen-free low-smoke flame-retardant irradiation cross-linked polyolefin insulating layer 2.

The filler of the filling layer 3 comprises filling water-blocking expansion yarns.

The water-resistant layer comprises a plurality of layers of water-resistant expansion belts 4 arranged outside the cable core.

The welding protection layer 5 comprises a halogen-free low-smoke flame-retardant belt.

The bearing layer 6 is a stainless steel bearing layer 6 and is welded outside the welding protection layer 5 by using a seamless steel tube welding technology.

The moisture-proof layer 7 comprises an aluminum-plastic composite belt longitudinally wrapped and welded on the surface of the pressure-bearing layer 6.

The material used for the outer sheath 8 includes at least one of a high-density polyolefin material and a high-density polyethylene.

In the specific implementation process, referring to fig. 1, an insulated wire core is formed by a plurality of stranded copper conductors 1 and a halogen-free low-smoke flame-retardant irradiation cross-linked polyolefin insulating layer 2; a plurality of insulating wire cores are twisted into a cable core, a filling layer 3 formed by filling water-blocking expansion yarns is filled in the gap of the cable core, a wrapping water-blocking expansion belt 4 is overlapped outside the cable core to form a wrapping belt, a welding protection layer is formed by a halogen-free low-smoke flame-retardant belt 5, a seamless steel pipe pressure-bearing layer 6 is welded in an embossing mode, and a high-density halogen-free low-smoke flame-retardant polyolefin outer sheath 8 is extruded and wrapped together with the cable core by a longitudinally-wrapped aluminum-.

In specific implementation, the corresponding structural arrangement and material selection are respectively as follows:

the conductor 1 is formed by twisting annealed copper wires, and the surface of the conductor layer is smooth and clean, has no burrs and has no scratch and falling of a tin layer;

the insulating layer 2 is made of extruded halogen-free low-smoke flame-retardant irradiation cross-linked polyolefin material, the thickness of the insulating layer meets the specification, and the appearance of the insulating layer has no obvious visible defects;

the filling layer 3 adopts water-blocking expansion yarn, and is tightly and roundly filled;

the wrapping tape 4 adopts a water-blocking expansion tape;

the welding protective layer 5 adopts a halogen-free low-smoke flame-retardant belt;

the pressure bearing layer 6 adopts a seamless steel pipe which is continuously welded by embossing;

the waterproof layer 7 adopts a longitudinal-wrapped aluminum-plastic composite tape;

the outer sheath 8 is made of extruded high-density halogen-free low-smoke flame-retardant polyolefin material.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a waterproof high pressure-bearing cable of environmental protection which characterized in that: the cable comprises an insulating wire core, wherein the insulating wire core is provided with a plurality of strands which are twisted into a cable core;

a filling layer (3) is arranged in a cable core gap formed by the multiple insulated wire cores;

and a water-blocking layer, a welding protection layer (5), a pressure-bearing layer (6), a moisture-proof layer (7) and an outer sheath (8) are sequentially arranged outside the cable core.

2. The environment-friendly waterproof high-pressure-bearing cable according to claim 1, characterized in that: the insulated wire core comprises a plurality of stranded copper conductors (1) and an insulating layer (2) coated on the surfaces of the copper conductors (1).

3. The environment-friendly waterproof high-pressure-bearing cable according to claim 2, characterized in that: the insulating layer (2) comprises a halogen-free low-smoke flame-retardant irradiation crosslinking polyolefin insulating layer (2).

4. The environment-friendly waterproof high-pressure-bearing cable according to claim 1, characterized in that: the filler of the filling layer (3) comprises filling water-blocking expansion yarns.

5. The environment-friendly waterproof high-pressure-bearing cable according to claim 1, characterized in that: the water-resistant layer comprises a plurality of layers of water-resistant expansion belts (4) arranged outside the cable core.

6. The environment-friendly waterproof high-pressure-bearing cable according to claim 1, characterized in that: the welding protection layer (5) comprises a halogen-free low-smoke flame-retardant belt.

7. The environment-friendly waterproof high-pressure-bearing cable according to claim 1, characterized in that: the bearing layer (6) is a stainless steel bearing layer (6) and is welded outside the welding protective layer (5) by using a seamless steel tube welding technology.

8. The environment-friendly waterproof high-pressure-bearing cable according to claim 1, characterized in that: the moisture-proof layer (7) comprises an aluminum-plastic composite belt longitudinally wrapped and welded on the surface of the pressure-bearing layer (6).

9. The environment-friendly waterproof high-pressure-bearing cable according to claim 1, characterized in that: the material used for the outer sheath (8) comprises at least one of high-density polyolefin material and high-density polyethylene.

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