CN218414054U

CN218414054U - High-performance water-blocking moisture-proof power cable

Info

Publication number: CN218414054U
Application number: CN202222503695.8U
Authority: CN
Inventors: 张军虎; 赵佩佩; 董文新
Original assignee: Jiangsu Xinchangfeng Cable Co ltd
Current assignee: Jiangsu Xinchangfeng Cable Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-01-31
Anticipated expiration: 2032-09-21

Abstract

The utility model relates to a cable, especially a high performance dampproofing power cable that blocks water, include: a copper conductor; the co-extrusion layer is extruded and coated on the copper conductor; the outer shielding layer is wrapped on the co-extrusion layer; the double-sided water-blocking tape is wrapped on the outer shielding layer; the polyethylene isolating sleeve is extruded on the double-sided water-blocking tape; the aluminum foil-polyethylene bonding strip is longitudinally wrapped on the polyethylene isolation sleeve; and the flame-retardant polyethylene outer sleeve is extruded and wrapped on the aluminum foil-polyethylene bonding tape. The waterproof and moistureproof power cable is large in filling coefficient, stable in quality and good in shielding effect, multiple waterproof and moistureproof effects are achieved through the double-sided waterproof tape, the polyethylene isolation sleeve, the aluminum foil-polyethylene bonding tape and the flame-retardant polyethylene outer sleeve, and the power cable can be effectively guaranteed to be completely immersed in water for use in the service life period.

Description

High-performance water-blocking moisture-proof power cable

Technical Field

The utility model relates to a cable, especially a high performance dampproofing power cable that blocks water.

Background

The power cable mainly comprises a conductor, an insulating layer, a shielding layer and a protective layer, and is erected in the air or arranged underground or underwater for telecommunication or power transmission.

At present common power cable realizes waterproof function through installing multiple protection such as armor layer, waterproof layer, protective layer additional, and this makes the diameter and the weight of cable great, and the transportation is inconvenient to along with outermost ageing, the wearing and tearing of cable, steam will slowly rust the armor layer, lead to power cable's damage aggravation, very big life who has shortened power cable.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a light in weight, block water and moisture proof power cable that a high performance that moisture proof can be good blocks water, concrete technical scheme is:

a high performance water-blocking moisture-resistant power cable comprising: a copper conductor; the co-extrusion layer is extruded and coated on the copper conductor; the outer shielding layer is wrapped on the co-extrusion layer; the double-sided water-blocking tape is wrapped on the outer shielding layer; the polyethylene isolating sleeve is extruded on the double-sided water-blocking tape; the aluminum foil-polyethylene bonding strip is longitudinally wrapped on the polyethylene isolation sleeve; and the flame-retardant polyethylene outer sleeve is wrapped on the aluminum foil-polyethylene bonding tape in an extruded manner.

Preferably, the co-extrusion layer comprises a conductor shielding layer, a crosslinked polyethylene insulating layer and an insulating shielding layer which are sequentially arranged from inside to outside.

Preferably, the thickness of the conductor shielding layer is 1mm, and the thickness of the insulation shielding layer is 0.8mm.

Further, outer shielding layer includes that the copper wire that sets gradually from inside to outside dredges around shielding layer and copper strips around the tight shielding layer of package.

Preferably, the copper conductor is a T-shaped wire conductor.

Wherein the T-wire conductor comprises: a center conductor, the center conductor being circular; and the T-shaped wires are stranded on the central conductor, and form a plurality of layers, and the layers are buckled with each other in a ring manner.

Compared with the prior art the utility model discloses following beneficial effect has:

the utility model provides a pair of dampproofing power cable fill factor that blocks water is big, stable in quality, shielding effectual to realize multiple dampproofing of blocking water through two-sided area that blocks water, polyethylene separation sleeve, aluminium foil-polyethylene bonding area and fire-retardant polyethylene overcoat, can effectively guarantee that this power cable submergence is used in the aquatic completely in life cycle.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings.

As shown in fig. 1, the high-performance water-blocking moisture-proof power cable comprises a copper conductor 1, a co-extrusion layer 2, an outer shielding layer 3, a double-sided water-blocking tape 4, a polyethylene isolation sleeve 5, an aluminum foil-polyethylene bonding tape 6 and a flame-retardant polyethylene outer sleeve 7 which are sequentially arranged from inside to outside.

The copper conductor 1 is a T-shaped wire conductor and comprises a central conductor 11 and a T-shaped wire 12, wherein the central conductor 11 is a circular copper conductor 1; the T-shaped wires 12 are monofilaments, each layer of the outer layer of the copper conductor 1 is stranded by the T-shaped wires 12, the T-shaped wires 12 of each layer are buckled together in a ring mode when the conductors are stranded, the compression coefficient, namely the filling coefficient of the T-shaped wires 12 is larger than the diameter of the round conductor monofilaments, and the T-shaped wires 12 of each layer and the layers are almost in seamless connection.

A conductor shielding layer 21 with the thickness of 1.0mm is extruded outside the T-shaped wire 12, a cross-linked polyethylene insulating layer 22 is extruded outside the conductor shielding layer 21, and an insulating shielding layer 23 with the thickness of 0.8mm is extruded outside the cross-linked polyethylene insulating layer 22. The conductor shielding layer 21, the crosslinked polyethylene insulating layer 22 and the insulation shielding layer 23 are produced in a three-layer one-time extrusion mode, a three-layer co-extrusion structure is formed, the co-extrusion layer 2 is obtained, and the quality stability of the power cable is improved.

Outer shielding layer 3 includes that the copper wire is dredged around shielding layer 31 and the copper strips around the package and tighten shielding layer 32, adopts the copper wire to dredged around and the copper strips around the package double-deck shielding structure, very big improvement the security performance of cable operation, prolonged the life of cable, can effectively resist external signal's interference simultaneously.

The double-sided water-blocking tape 4 wraps the outer part of the outer shielding layer 3, and plays an important role: once the moisture or humidity meets the water-resistant layer, it can expand in a short time to prevent the moisture or humidity from penetrating or diffusing into the cable interior.

The polyethylene isolation sleeve 5 is extruded on the double-sided water-blocking tape 4, and molecular chains in molecules are connected more tightly due to the low density of polyethylene, so that the polyethylene isolation sleeve has certain water-blocking and moisture-proof effects.

The aluminum foil-polyethylene bonding tape 6 is longitudinally wrapped and bonded, polyethylene is melted in a fire supply oven for a short time, the aluminum foil-polyethylene bonding tape 6 is bonded together through the polymerization of a doubling die, and then the aluminum foil-polyethylene bonding tape 6 is longitudinally wrapped together in a certain width in a seamless overlapping mode through the final process of extruding and wrapping the flame-retardant polyethylene outer sleeve 7, and the aluminum foil-polyethylene bonding tape 6 is longitudinally wrapped and bonded together, so that the water blocking effect is more excellent.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a dampproofing power cable that high performance blocks water which characterized in that includes:

a copper conductor (1);

the co-extrusion layer (2), the co-extrusion layer (2) is extruded and coated on the copper conductor (1);

the outer shielding layer (3) is wrapped on the co-extrusion layer (2);

the double-sided water-blocking tape (4) is wrapped on the outer shielding layer (3);

the polyethylene isolation sleeve (5) is extruded on the double-sided water-blocking tape (4);

the aluminum foil-polyethylene bonding tape (6) is longitudinally wrapped on the polyethylene isolation sleeve (5); and

the flame-retardant polyethylene outer sleeve (7) is extruded on the aluminum foil-polyethylene bonding tape (6).

2. A high performance water-blocking moisture-proof power cable as claimed in claim 1, wherein the co-extruded layer (2) comprises a conductor shield layer (21), a crosslinked polyethylene insulation layer (22) and an insulation shield layer (23) arranged in sequence from inside to outside.

3. A high performance water-blocking moisture-proof power cable as claimed in claim 2, wherein the thickness of the conductor shield (21) is 1mm and the thickness of the insulation shield (23) is 0.8mm.

4. A high-performance water-blocking moisture-proof power cable as claimed in claim 3, wherein the outer shielding layer (3) comprises a copper wire loose-wound shielding layer (31) and a copper strip tight-wound shielding layer (32) which are sequentially arranged from inside to outside.

5. A high performance water-blocking moisture-proof power cable as claimed in any one of claims 1 to 4, wherein the copper conductor (1) is a T-shaped wire conductor.

6. The high performance water-blocking moisture-proof power cable of claim 5, wherein the T-shaped wire conductor comprises:

a central conductor (11), the central conductor (11) being circular; and

the T-shaped wires (12) are stranded on the central conductor (11), the T-shaped wires (12) form a plurality of layers, and the layers are buckled with each other in a ring manner.