CN203377021U

CN203377021U - Novel-type direct-current low-inductance environmental-protection square cable with high-temperature resistance

Info

Publication number: CN203377021U
Application number: CN201320343841.3U
Authority: CN
Inventors: 何孙益; 张云; 简裕利
Original assignee: Zhejiang Wanma Tianyi Communication Wire & Cable Co ltd
Current assignee: Zhejiang Wanma Tianyi Communication Wire & Cable Co ltd
Priority date: 2013-06-13
Filing date: 2013-06-13
Publication date: 2014-01-01
Anticipated expiration: 2023-06-13

Abstract

The utility model relates to a novel-type direct-current low-inductance environmental-protection square cable with high-temperature resistance. A technical problem to be solved is to provide a cable which is good in the anti-interference effect, simple in structure and convenient to manufacture. The technical scheme of the utility model comprises that the cable comprises a shielding layer and a sheath which axially wrap a core wire from the inside to the outside sequentially; the cable is characterized in that the core wire comprises two wires which draw close to each other, wherein one wire is located on the other wire; each wire comprises three inner conductors and an insulating layer, wherein the three inner conductors are in parallel arrangement on the same plane, and the insulating layer wraps the peripheries of the three inner conductors, and the cross section of the insulating layer is rectangular.

Description

A kind of Novel DC hangs down inductance square high temperature resistant environment-protective cable

Technical field

The utility model relates to a kind of signal transmssion line, specifically a kind of coaxial cable.

Background technology

Development along with the Communication in China technology, mobile communication business has entered a stage of advancing by leaps and bounds, wherein the scale of macrocell base stations, microcell base station, repeater and indoor covering system has obtained continuous expansion, and also constantly improves for the requirement of the lv power cable to these equipment power supplies.

But the inside of traditional circular electric power cable is two parallel round conductors, when near cable, having high-frequency signal, this structure can cause the higher alternation inductance of the inner generation of cable, thereby affect the smooth transmission of signal of communication, therefore can not be applicable to, in the equipment of higher communicating requirement, need further improvement.

The utility model content

The purpose of this utility model is the deficiency overcome in the above-mentioned background technology, provides a kind of Novel DC to hang down inductance square high temperature resistant environment-protective cable, and this cable should have the characteristics that anti-jamming effectiveness is good, simple in structure and easily manufactured.

The technical solution of the utility model is: a kind of Novel DC hangs down inductance square high temperature resistant environment-protective cable, comprise from inside to outside coaxial coated screen and sheath on heart yearn successively, it is characterized in that: described heart yearn comprises two wires that close up up and down, and every wire comprises three inner wires being arranged in parallel within same plane and coated around three inner wires and the cross section insulating barrier that is rectangle.

Described every inner wire is some stranded the forming of tinned copper wire.

Described screen comprises from inside to outside coated aluminium foil layer and braid on two wires successively.

Described braid is that tinned copper wire is made.

Described insulating barrier is that the low smoke and zero halogen material is made.

Described sheath is that the low smoke and zero halogen material is made.

The beneficial effects of the utility model are:

Inside of the present utility model is the heart yearn that two sliver transvers sections are rectangle, compare with traditional cable and there is lower inductance (inductance is no more than 0.4uH/m, the inductance of conventional circular electric power cable is up to 1.0uH/m), can greatly promote the anti-jamming effectiveness of signal of communication, for the high speed development of the communications field (especially cordless communication network) and improve the economic and social benefits positive impetus; In addition, structure of the present utility model is also fairly simple, manufactures also more for convenience.

The accompanying drawing explanation

Fig. 1 is main TV structure schematic diagram of the present utility model.

Embodiment

Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.

As shown in Figure 1, a kind of Novel DC hangs down inductance square high temperature resistant environment-protective cable, comprises from inside to outside coaxial coated screen and sheath 4 on heart yearn successively.

This heart yearn comprises two wires and coated insulating barrier 2 on wire; Be provided with three inner wires 1 that are arranged parallel to each other in same plane in every wire, inner wire is generally some stranded the forming of tinned copper wire; In the conductor coated and cross section insulating barrier of insulating barrier is rectangle (as shown in FIG., this rectangle is platypelloid type, and the length of horizontal direction is greater than the length of vertical direction); Article two, wire coated upper shielding layer and sheath successively again after closing up up and down.

Screen comprises from inside to outside coated aluminium foil layer 3-1 and braid 3-2 on two wires successively; This aluminium foil layer is vertical wrap type structure, thereby can fully coatedly in the heart yearn appearance, guarantee 100% coverage effect, has reliable screening ability; This braid is generally the tinned copper wire braiding and forms, and can strengthen the stability of aluminium foil layer and improve mechanical strength of the present utility model and shielding properties simultaneously.

In addition, insulating barrier and sheath are the low smoke and zero halogen material and make; This low smoke and zero halogen material selection cross-linking radiation polyolefine material (dosage of cross-linking radiation is controlled at the 25mrd left and right), have higher thermal stability, become charcoal and high temperature resistant type, can under 125 ℃ of environment, normally use; Be added with the special auxiliary agent such as halogen-free flame retardants, antioxidant in this low smoke and zero halogen material, do not discharge harmful poison gas in the time of guaranteeing cable fire; The color of this low smoke and zero halogen material is generally black and grey simultaneously.

Electric pressure of the present utility model is 100V and following, and the area of cross section is 6-16 square centimeter left and right.

Production stage of the present utility model is followed successively by:

1, make inner wire: successively through the wire drawing of copper bar, monofilament is zinc-plated and the operation such as stranded after make a branch of inner wire;

2, make insulating barrier: by the parallel placement of three beams inner wire and marshalling (need avoid the three beams inner wire mutually to intersect), then insulation extrusion is become to a wire after on inner wire;

3, make screen: after two wires are closed up up and down, make again aluminium foil layer and braid simultaneously; Must guarantee the aluminium foil layer coated appearance at two wires fully;

4, make sheath: jacket surface should guarantee smooth smooth and the macroscopic defects such as impurity, pimple can not be arranged;

5, product inspection.

Claims

1. a Novel DC hangs down inductance square high temperature resistant environment-protective cable, comprise from inside to outside coaxial coated screen and sheath (4) on heart yearn successively, it is characterized in that: described heart yearn comprises two wires that close up up and down, and every wire comprises three inner wires (1) of being arranged in parallel within same plane and coated around three inner wires and the cross section insulating barrier (2) that is rectangle.

2. a kind of Novel DC according to claim 1 hangs down inductance square high temperature resistant environment-protective cable, and it is characterized in that: described every inner wire is some stranded the forming of tinned copper wire.

3. a kind of Novel DC according to claim 2 hangs down inductance square high temperature resistant environment-protective cable, and it is characterized in that: described screen comprises from inside to outside coated aluminium foil layer (3-1) and braid (3-2) on two wires successively.

4. a kind of Novel DC according to claim 3 hangs down inductance square high temperature resistant environment-protective cable, and it is characterized in that: described braid is that tinned copper wire is made.

5. a kind of Novel DC according to claim 4 hangs down inductance square high temperature resistant environment-protective cable, and it is characterized in that: described insulating barrier is that the low smoke and zero halogen material is made.

6. a kind of Novel DC according to claim 5 hangs down inductance square high temperature resistant environment-protective cable, and it is characterized in that: described sheath is that the low smoke and zero halogen material is made.