CN207250215U

CN207250215U - A kind of lightning protection shields power cord

Info

Publication number: CN207250215U
Application number: CN201720831219.5U
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-07-11
Filing date: 2017-07-11
Publication date: 2018-04-17
Anticipated expiration: 2027-07-11

Abstract

The utility model discloses a kind of lightning protection shielding power cord, mainly including conductor, insulation, filling, band, shielded layer, ground wire and sheath.The power cord shares two, wrapped with Shu Hehou together with filling by band, the periphery of the band is enclosed with shielded layer, there is the ground wire on the inside or outside of the shielded layer, the ground wire is in close contact with the shielded layer along longitudinal direction, and the sheath is enclosed with the periphery of the shielded layer and the ground wire.The structure design of the utility model is reasonable, improves production and processing efficiency, reduces cost, and the ground connection operation at cable installation scene is easier.

Description

A kind of lightning protection shields power cord

Technical field

Communication equipment field is the utility model is related to, refers in particular to a kind of distributed base station lightning protection shielding power cord.

Background technology

At present, in the installation wiring of wireless telecom equipment distributed base station, the shielded layer of the shielded power supply line of use Shielded for metal wire knitted, which has the disadvantage that：

(1) material of metal wire knitted shielding is generally copper wire or copper-clad aluminum alloy silk, Material Cost are higher；

(2) braid shielded of wire must be realized using braider when cable produces and processes, equipment investment is larger, The production efficiency of weaving is also very low；

(3) the shielded power supply line produced using metal wire knitted, ground connection behaviour is carried out in the erecting bed of communication equipment , it is necessary to braiding layer be uncovered the shape of a plait when making, then it is grounded, operation is very inconvenient.

Industry has the ready-made cable that electromagnetic shielding is realized by the way of aluminium foil adjunction ground wire, such as with aluminum foil shielded Cable, such cable are commonly used in signal transmission, are generally used not as power cord, are unlikely used as distributed base station Lightning protection shields power cord.In addition, generally all very little, maximum diameter do not surpass the sectional area of the conductor wrapped up inside foil shielding layer 1.0 millimeters are crossed, or conductor cross sectional area is usually no more than 0.6 square millimeter, and the metallic conductor inside foil shielding layer is general It is sub-thread copper conductor, without using strands conductor.Therefore, either from application scenarios or in structure, with this hair It is bright all to there is obvious difference.

Industry also has a kind of power cord of outdoor application, is mainly used in the environment such as ground lower groove, in such power cord There is one layer of aluminium-plastic tape between oversheath and conductor, although its internal copper conductor is strands conductor, it is used Aluminium-plastic tape it is generally harder, and thickness is typically no less than 0.1 millimeter, also not single ground wire, it is typically no directly Lightning protection shielding power cord as distributed base station uses.Therefore, no matter from structure or on application scenarios, also with the present invention In the presence of obvious difference.

Utility model content

The purpose of this utility model is to provide a kind of distributed base station with lightning protection shield power cord, reduce Material Cost and The production cost of cable in itself, facilitates distributed base station and lightning protection to shield the on-site construction operations connected between power cord, at the same time Also the requirement of lightning protection can be met, it is reasonable in design.

To reach above-mentioned purpose, the utility model adopts the following technical solution：

A kind of lightning protection shields power cord, it includes conductor 1, insulation 2, filling 3, band 5, shielded layer 6,4 and of ground wire Oversheath 7；The conductor 1 is strands conductor, and the periphery of the strands conductor is enclosed with the insulation 2, forms band The power cord of insulation；The power cord of the tape insulation shares two, and Shu Hehou is wrapped up by the band 5 together with the filling 3 Fixed, the periphery of the band 5 is enclosed with shielded layer 6, and there is the ground wire 4 in the inner or outer side of the shielded layer 6, described to connect Along longitudinal close contact, the periphery of the shielded layer 6 and the ground wire 4 is enclosed with the outer shield for ground wire 4 and the shielded layer 6 Set 7.

The conductor 1 is strands conductor, and the material of the conductor 1 is copper or aluminium alloy or copper-clad aluminum alloy；It is described The material of insulation 2 is polyvinyl chloride or polyethylene or crosslinked polyethylene or low smoke and zero halogen material etc.；Described in the parcel of insulation 2 The power cord of the tape insulation formed after conductor 1 shares two, and the power cord of two tape insulations is in structure and performance etc. Aspect is identical, but the color of the insulation 2 of the power cord of two tape insulations can be different so as to Division identification, or adopts With same color, its its surface stamps different marks, so as to Division identification, or uses other manner to distinguish identification.

The nominal area of section of the power cord of the tape insulation is not less than 2.5 square millimeters.

The material of the filling 3 is polypropylene or the rope made of hemp or cotton cord etc., and the material of the band 5 is polyester or non-woven fabrics； The material of the shielded layer 6 is soft aluminium foil, the aluminium foil can also be wrapped with longitudinal wrap, the aluminium foil can be single The aluminium foil of face conduction or two-sided conductive aluminium foil, the thickness of the aluminium foil are no more than 0.1 millimeter；The ground wire 4 can To be sub-thread copper conductor or strands copper conductor；Either sub-thread copper conductor or strands copper conductor, surface Tin plating processing can be carried out, can not also be handled.

If the shielded layer 6 is faced outwardly using the conduction of single-sided conductive aluminium foil and the aluminium foil, the ground wire is put It is placed in the outside of the aluminium foil；If the shielded layer 6 uses the conducting surface of single-sided conductive aluminium foil and the aluminium foil inwardly, institute State the inner side that ground wire is positioned over the aluminium foil；If the shielded layer 6 uses two-sided conductive aluminum foil, the ground wire both may be used The inner side of the aluminium foil is positioned over, can also be positioned over the outside of the aluminium foil.

The material of the oversheath 7 is polyvinyl chloride or polyethylene or low smoke and zero halogen material etc..

Yarn can be used to substitute the band, and when producing cable using the cladding for pricking the yarn process replacement band Technique.

The utility model compared with prior art, while the requirement of lightning protection is met, has the following advantages and has Beneficial effect：

(1) Material Cost of cable in itself is reduced；

(2) production cost of cable in itself is reduced；

(3) on-site construction operations when being connected between distributed base station and lightning protection shielding power cord are facilitated.

As long as the thickness of the utility model shielded layer and the sectional area selection of ground wire are reasonable, fully achieve and metal The same impedance of silk woven shield, or even the impedance of smaller, meet release requirement and the requirement of electromagnetic shielding of thunder-strike current, And since the present invention uses aluminum foil shielded, its production efficiency is shielded apparently higher than metal wire knitted, and Material Cost is also significantly lower than Metal wire knitted shields, reasonable in design.

Brief description of the drawings

Fig. 1 is the cross-sectional structure schematic diagram of the utility model embodiment 1.

Embodiment

Embodiment 1

Referring to Fig.1, a kind of lightning protection shielding power cord, its cross section is rounded, and inside includes conductor 1, insulation 2, filling 3rd, band 5, shielded layer 6, ground wire 4, oversheath 7.

The conductor 1 is strands conductor, and the periphery of the strands conductor is enclosed with the insulation 2, forms band The power cord of insulation；The power cord of the tape insulation shares two, and Shu Hehou is wrapped up by the band 5 together with the filling 3 Fixed, the periphery of the band 5 is enclosed with shielded layer 6, and there is the ground wire 4 in the inner or outer side of the shielded layer 6, described to connect Along longitudinal close contact, the periphery of the shielded layer 6 and the ground wire 4 is enclosed with the outer shield for ground wire 4 and the shielded layer 6 Set 7.

The material of the conductor 1 is copper conductor；The material of the insulation 2 is crosslinked polyethylene；Described in the parcel of insulation 2 The power cord of the tape insulation formed after conductor 1 shares two, and the power cord of two tape insulations is in structure and performance etc. Aspect is identical, wherein the insulation 2 of the power cord of a tape insulation is blueness, the power cord of another tape insulation Insulation 2 be brown.

The nominal area of section of the power cord of the tape insulation is 4 square millimeters.

The material of the filling 3 is polypropylene.

The material of the band 5 is polyester.

The material of the shielded layer 6 is soft, single-sided conductive, the conductive longitudinal wrap aluminium foil faced outwardly, the aluminium foil Thickness be 0.06 millimeter.

The ground wire 4 is strands copper conductor, and electroplating surfaces with tin processing, nominal diameter is 0.6 millimeter, is placed on shielding The outside of layer 6.

The material of the oversheath 7 is pvc material.

The utility model reduces the production cost of Material Cost and cable in itself, facilitates distributed base station to be shielded with lightning protection The on-site construction operations connected between power cord, while can also meet the requirement of lightning protection, it is reasonable in design.

Claims

1. a kind of lightning protection shields power cord, it includes conductor (1), insulation (2), filling (3), band (5), shielded layer (6), connects Ground wire (4) and oversheath (7)；The conductor (1) is strands conductor, and the periphery of the strands conductor is enclosed with described Insulate (2), form the power cord of tape insulation；The power cord of the tape insulation shares two, the Shu Hehou together with the filling (3) Wrapped by the band (5), the periphery of the band (5) is enclosed with shielded layer (6), the inner side of the shielded layer (6) or There are the ground wire (4), the ground wire (4) and the shielded layer (6) in outside along longitudinal close contact, the shielded layer (6) The oversheath (7) is enclosed with the periphery of the ground wire (4).

2. a kind of lightning protection shielding power cord according to claim 1, it is characterised in that the conductor (1) is strands Conductor, the material of the conductor (1) is copper or aluminium alloy or copper-clad aluminum alloy；The material of the insulation (2) for polyvinyl chloride or Polyethylene or crosslinked polyethylene or low smoke and zero halogen material；The insulation (2) wraps up the tape insulation that the conductor (1) is formed afterwards Power cord share two, the power cord of two tape insulations is identical with aspect of performance in structure, but two bands The color of the insulation (2) of the power cord of insulation can be different so as to Division identification, or using same color and in its table Face stamps different marks, and so as to Division identification, the nominal area of section of the power cord of the every tape insulation is not less than 2.5 squares Millimeter.

3. a kind of lightning protection shielding power cord according to claim 1, it is characterised in that the material of the filling (3) is poly- Propylene or the rope made of hemp or cotton cord, the material of the band (5) is polyester or non-woven fabrics.

4. a kind of lightning protection shielding power cord according to claim 1, it is characterised in that the material of the shielded layer (6) is Soft aluminium foil, the aluminium foil can also be wrapped with longitudinal wrap, the aluminium foil can be the aluminium foil of single-sided conductive, can also It is two-sided conductive aluminium foil, the thickness of the aluminium foil is no more than 0.1 millimeter.

5. a kind of lightning protection shielding power cord according to claim 1, it is characterised in that the ground wire (4) can be single Stock copper conductor or strands copper conductor；Either sub-thread copper conductor or strands copper conductor, surface can be with Tin plating processing is carried out, can not also be handled.

6. a kind of lightning protection shielding power cord according to claim 1, it is characterised in that if the shielded layer (6) uses The conduction of single-sided conductive aluminium foil and the aluminium foil faces outwardly, then the ground wire (4) is positioned over the outside of the aluminium foil；If institute State shielded layer (6) and use the conducting surface of single-sided conductive aluminium foil and the aluminium foil inwardly, then the ground wire (4) is positioned over the aluminium The inner side of paper tinsel；If the shielded layer (6) uses two-sided conductive aluminum foil, the ground wire (4) can both be positioned over the aluminium foil Inner side, can also be positioned over the outside of the aluminium foil.

7. a kind of lightning protection shielding power cord according to claim 1, it is characterised in that the material of the oversheath (7) is Polyvinyl chloride or polyethylene or low smoke and zero halogen material.

8. a kind of lightning protection shielding power cord according to claim 1, it is characterised in that yarn can be used to substitute the bag Band (5), and when producing cable using the cladding process for pricking the yarn process replacement band (5).