CN205282175U

CN205282175U - Medium -voltage shielding cable

Info

Publication number: CN205282175U
Application number: CN201521095922.1U
Authority: CN
Inventors: 戴琪; 杨军华
Original assignee: JIANGSU XINFENG CABLE CO Ltd
Current assignee: JIANGSU XINFENG CABLE CO Ltd
Priority date: 2015-12-25
Filing date: 2015-12-25
Publication date: 2016-06-01
Anticipated expiration: 2025-12-25

Abstract

The utility model discloses a medium -voltage shielding cable, a serial communication port, including the conductor of inlayer, the insulating internal shield layer of cladding in the conductor outside, insulating layer and the outer round shielding layer of insulating layer outside the internal shield layer of insulating, the shielding layer is dredged around forming by a plurality of copper wires, and the outer cladding of shielding layer has the one deck to wind the covering, around the outer inner sheath that is of covering, the outer armor that is of inner sheath, the outer oversheath that is of armor. The utility model provides a current medium -voltage shielding cable shielding inhomogeneous, bear the defect that short -circuit current is little, change the inside copper tape shield of cable structure into the copper wire shielding, make cable shield's homogeneity effect better, make the cable can bear bigger short -circuit current, the security has improved.

Description

A kind of MV shielded cable

Technical field

This utility model relates to field of cable technology, more particularly to a kind of MV shielded cable.

Background technology

Wires and cables industry is the second largest industry that China is only second to automobile industry, along with China's economic growth continuously and healthily, provides the huge market space, product variety Service Efficiency and domestic market occupation rate all more than 90% for cable products. In the cable of numerous kinds, shielded cable is wherein indispensable a kind of type, and it is applicable to transformator and similar devices.

Screen layer in shielded cable act as: 1, because the electric current that passes through of power cable is relatively larger, can produce magnetic field around electric current, in order to not affect other element, and can this electromagnetic-field-shielded in cable so adding screen layer; 2, can playing certain ground protection effect, if there is breakage in cable core, the electric current leaked can flow into grounded screen along screen layer, plays the effect of safeguard protection. But current existing MV shielded cable adopts copper strip shielding mostly, copper strip shielding is by the impact of processing technique, finite thickness, it is impossible to play better shield effectiveness.

Summary of the invention

This utility model overcomes the technological deficiency described in above-mentioned background, have devised the MV shielded cable that a kind of ground connection is functional, safety is high.

For solving the problems referred to above, this utility model be the technical scheme is that

A kind of MV shielded cable, it is characterized in that, conductor including innermost layer, being coated on the insulation internal shield outside conductor, the insulating barrier and the one of insulating barrier outer layer outside insulation internal shield encloses screen layer, and described screen layer is dredged around forming by some copper wires, screen layer is coated with one layer of lapping layer, described lapping layer outer layer is inner sheath, and described inner sheath outer layer is armor, and described armor outer layer is oversheath.

Further, described conductor is copper conductor.

Further, described insulating barrier is XLPE insulating barrier.

Known via above-mentioned technical scheme, it is uneven that this utility model solves the shielding of existing MV shielded cable, the defect that carrying short circuit current is little, change the copper strip shielding within the construction of cable into brass wire shielding, make the uniformity effects of cable shield more preferably, make cable can carry bigger short circuit current, improve safety.

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail simultaneously.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of MV shielded cable of this utility model;

Wherein, in figure:

1-conductor, 2-insulate internal shield; 3-insulating barrier; 4-screen layer; 5-lapping layer; 6-inner sheath; 7-armor; 8-oversheath.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described.

As shown in Figure 1, the utility model discloses a kind of MV shielded cable, conductor 1 including innermost layer, being coated on the insulation internal shield 2 outside conductor 1, the insulating barrier 3 and the one of insulating barrier 3 outer layer outside insulation internal shield 2 encloses screen layer 4, and described screen layer 4 is dredged around forming by some copper wires, screen layer 4 is coated with one layer of lapping layer 5, described lapping layer 5 outer layer is inner sheath 6, and described inner sheath 6 outer layer is armor 7, and described armor 7 outer layer is oversheath 8.

For further prioritization scheme, described conductor 1 is copper conductor, and described insulating barrier 3 is XLPE insulating barrier.

This utility model changes the shielding mode of original shielded cable, by wrapped for copper strips change into copper wire dredge around, make cable shield more uniform, effect more preferably, can also make the short circuit current that cable carrying is bigger simultaneously, improve safety, be suitable for promoting the use of.

It should be noted that, the multiple amendment of the described above of the disclosed embodiments be will be apparent from for those skilled in the art, generic principles defined herein when without departing from spirit or scope of the present utility model, can realize in other embodiments. Therefore; this utility model is not intended to be limited to the embodiments shown herein; anyone should learn the structure change made under enlightenment of the present utility model, every have with this utility model same or like like technical scheme, belong to protection domain of the present utility model.

Claims

1. a MV shielded cable, it is characterized in that, conductor including innermost layer, being coated on the insulation internal shield outside conductor, the insulating barrier and the one of insulating barrier outer layer outside insulation internal shield encloses screen layer, and described screen layer is dredged around forming by some copper wires, screen layer is coated with one layer of lapping layer, described lapping layer outer layer is inner sheath, and described inner sheath outer layer is armor, and described armor outer layer is oversheath.

2. a kind of MV shielded cable according to claim 1, it is characterised in that: described conductor is copper conductor.

3. a kind of MV shielded cable according to claim 1, it is characterised in that: described insulating barrier is XLPE insulating barrier.