CN210640037U

CN210640037U - Cable for demagnetization

Info

Publication number: CN210640037U
Application number: CN201922116131.7U
Authority: CN
Inventors: 刘焱鑫; 任帅; 秦宏涛; 张静
Original assignee: Changzhou Marine Cable Co ltd; Jiangsu Zhongli Group Co Ltd
Current assignee: Changzhou Marine Cable Co ltd; Jiangsu Zhongli Group Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-05-29
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a cable for demagnetization, its main points are: the cable comprises a wire core conductor, a wrapping layer, an insulating layer, a sheath layer and a protective layer; the lapping layer is lapped outside the conductor of the wire core by adopting non-woven fabrics, and the lapping and covering rate is 20-30%; the insulating layer is made of ethylene propylene insulating rubber material; the sheath layer is made of chlorosulfonated polyethylene material; the insulating layer and the sheath layer are extruded and wrapped outside the wrapping layer by double-layer coextrusion, and vulcanization is carried out after extrusion; the protective layer is made of polyether polyurethane material, and the polyether polyurethane is extruded outside the sheath layer. The utility model discloses a cable for demagnetization simple structure increases the polyurethane protective layer on conventional demagnetization cable's basis, is favorable to the cable to guarantee good mechanical properties and good wearability in the use, can effectually resist the incised wound and puncture of marine organism (sea oyster class) to the sheath.

Description

Cable for demagnetization

Technical Field

The utility model relates to a power cable technical field specifically is a cable for demagnetization.

Background

When the degaussing cable is used in a seawater environment, the cable is very easy to be attached by marine organisms (crassostrea gigas), and when the cable is electrified with large current, electric power is generated to attract and extrude each other, so that the marine organisms (crassostrea gigas) attached to the cable can cut or puncture the cable, and the cable is scrapped.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure is favorable to improving cable protective capability's cable for demagnetization.

Realize the utility model discloses the basic technical scheme of purpose is: a degaussing cable is characterized in that: the cable comprises a wire core conductor, a wrapping layer, an insulating layer, a sheath layer and a protective layer; the lapping layer is lapped outside the conductor of the wire core by adopting non-woven fabrics, and the lapping and covering rate is 20-30%; the insulating layer is made of ethylene propylene insulating rubber material; the sheath layer is made of chlorosulfonated polyethylene material; the insulating layer and the sheath layer are extruded and wrapped outside the wrapping layer by double-layer coextrusion, and vulcanization is carried out after extrusion; the protective layer is made of polyether polyurethane material, and the polyether polyurethane is extruded outside the sheath layer.

The technical scheme based on the basic technical scheme is as follows: the core conductor is formed by twisting a plurality of metal monofilaments in forward and reverse directions, and the inner layer pitch diameter ratio is smaller than that of the outer layer pitch diameter ratio.

The utility model discloses following beneficial effect has: (1) the utility model discloses a cable for demagnetization simple structure increases the polyurethane protective layer on conventional demagnetization cable's basis, is favorable to the cable to guarantee good mechanical properties and good wearability in the use, can also effectually resist marine organism (sea oyster class) to the incised wound of sheath and puncture, improves cable protective capability.

(2) The utility model discloses a flexible conductor in the sinle silk conductor adoption GJB1916-94 carries out the positive reverse transposition, is favorable to improving the holistic compliance of cable, and minimum bend radius when the cable mounting is 4D. The conductor is usually a stranded wire with a large pitch-diameter ratio, and when the stranded wire is subjected to complex twisting, the pitch-diameter ratio of the inner layer is larger than that of the outer layer, so that the whole twisting rate of the cable can be ensured to be small, but the conductor is easy to deform when passing through continuous vulcanization equipment. The pitch-diameter ratio of the stranded wire is small, and the pitch-diameter ratio of the inner layer is smaller than that of the outer layer during complex twisting, so that the overall roundness of the cable is higher, and the concentricity of the cable during insulation and extrusion is ensured.

(3) The utility model discloses an insulating layer and restrictive coating adopt double-deck crowded package of crowded altogether outside the covering, vulcanize after crowded package, ensure whole roundness of cable and insulating sheath homogeneity to be favorable to improving barrier propterty.

(4) The utility model discloses a protective layer material uses high strength, high elongation, high anti tear strength, hydrolysis resistance's polyether type polyurethane material, can play good guard action, reduces marine organism (sea oyster class) to the destruction of cable (the shell cuts the cable and punctures), prolongs the life of cable.

Drawings

Fig. 1 is a schematic structural view of the degaussing cable of the present invention.

The reference numbers in the drawings are:

sinle silk conductor 1 is around covering 2, insulating layer 3, restrictive coating 4, protective layer 5.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings. The description of the orientation of the utility model is performed according to the orientation shown in fig. 1, that is, the up-down left-right direction shown in fig. 1 is the up-down left-right direction of the description, the side towards which fig. 1 faces is the front side, and the side departing from fig. 1 is the rear side.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

(example 1)

See fig. 1, the utility model discloses a cable for demagnetization includes sinle silk conductor 1, around covering 2, insulating layer 3, restrictive coating 4 and protective layer 5.

The core conductor 1 is formed by twisting a plurality of metal monofilaments in the forward and reverse directions, the metal monofilaments are tinned soft round copper wires, the tinned soft round copper wires meet the monofilament structure requirements of table 1-2 in GJB1916-94, the pitch-diameter ratio of the stranded wires is small, the pitch-diameter ratio of the inner layer is smaller than that of the outer layer during compound twisting, the overall roundness of the cable is higher, and the concentricity of the cable during insulation and extrusion is ensured.

Around covering 2 adopt the non-woven fabrics to wrap outside sinle silk conductor 1, take the lid rate 20% -30% around the package, this embodiment is 25%.

The insulating layer 3 is made of ethylene propylene insulating rubber material.

The sheath layer 4 is made of chlorosulfonated polyethylene material.

The insulating layer 3 and the sheath layer 4 are wrapped outside the wrapping layer 2 by double-layer co-extrusion and vulcanization is carried out after the wrapping.

The protective layer 5 is made of polyether polyurethane material, and the polyether polyurethane is extruded outside the sheath layer 4. And drying the polyether polyurethane at the temperature of 95 ℃ for 4 hours, and then extruding and wrapping.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A degaussing cable is characterized in that: the cable comprises a wire core conductor, a wrapping layer, an insulating layer, a sheath layer and a protective layer; the lapping layer is lapped outside the conductor of the wire core by adopting non-woven fabrics, and the lapping and covering rate is 20-30%; the insulating layer is made of ethylene propylene insulating rubber material; the sheath layer is made of chlorosulfonated polyethylene material; the insulating layer and the sheath layer are extruded and wrapped outside the wrapping layer by double-layer coextrusion, and vulcanization is carried out after extrusion; the protective layer is made of polyether polyurethane material, and the polyether polyurethane is extruded outside the sheath layer.

2. The degaussing cable according to claim 1, characterized in that: the core conductor is formed by twisting a plurality of metal monofilaments in forward and reverse directions, and the inner layer pitch diameter ratio is smaller than that of the outer layer pitch diameter ratio.