CN203422961U - Water-blocking self-supporting lead-in cable with two circular wire pairs and physical foaming layer - Google Patents

Abstract

The utility model discloses a water-blocking self-supporting lead-in cable with two circular wire pairs and a physical foaming layer. The cable comprises a cable unit and a reinforcement unit which are extended in parallel to each other. The cable unit comprises two wire pairs at center and an outer protection layer wrapping the two wire pairs. Each wire pair includes two conductors; each conductor is wrapped with an insulating layer; each insulating layer comprises an inner surface layer, a physical foaming layer and an outer surface layer in sequence from the interior to the exterior; and the wire pairs are wrapped with a water-blocking layer. The reinforcement unit comprises a reinforcement member at center and a reinforcement protection layer wrapping the reinforcement member, and the reinforcement member and the reinforcement protection layer are fixedly connected along the length direction. According to the design, the insulating layer has the structure including the inner surface layer, the physical foaming layer and the outer surface layer, the physical foaming layer is prepared from foaming material with low cost and light weight, under the precondition that the cable performance requirement is satisfied, raw material consumption is effectively reduced, production cost and transport cost of the cable are reduced, and waste material and harmful gas discharge is decreased.

Description

Two pairs of round wire are to physical blowing waterproofing type self-bearing type lead-in cable

Technical field

The utility model relates to a kind of two pairs of round wire to physical blowing waterproofing type self-bearing type lead-in cable.

Background technology

Existing two pairs of round wire adopt solid PE material to the insulating barrier in waterproofing type self-bearing type lead-in cable, make whole cable cost higher.

Utility model content

The purpose of this utility model is to provide a kind of two pairs of round wire to physical blowing waterproofing type self-bearing type lead-in cable, and fill with expanded material at insulating barrier middle part wherein, reduces the consumption of PE material, and then effectively reduce costs.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of two pairs of round wire are to physical blowing waterproofing type self-bearing type lead-in cable, comprise and parallel the cable unit of extension and strengthen unit, described cable unit by two pairs of lines at center to and the right outside outer jacket of line that surrounds described in two pairs form, line described in every pair is to comprising two conductors, the outside of described conductor is surrounded with insulating barrier, described insulating barrier comprises successively the endodermis that the outer wall by described conductor from inside to outside holds, physical blowing layer and exodermis, the right outside of described line is surrounded with waterstop, described reinforcement unit is by the reinforcement at center and surround outside reinforcement sheath and form, described outer jacket and described reinforcement sheath are fixedly connected along its length, the diameter of described conductor is 0.5mm, the thickness of described endodermis is 0.01mm, the thickness of described physical blowing layer is 0.14mm, the thickness of described exodermis is 0.05mm, the thickness of described waterstop is 0.15mm, the diameter of described reinforcement is 0.7mm, the thickness of described reinforcement sheath is 0.8mm, described line to be parallel lines to or twisted pair wire pair.

The beneficial effects of the utility model are: the insulating barrier in the design adopts endodermis, physical blowing layer to add the structure of exodermis, the expanded material of physical blowing layer is with low cost, quality is light, guaranteeing under the prerequisite that cable performance requires, can effectively reduce raw material consumption, and then reduce cable production cost, cost of transportation, also reduced the discharge of waste material and pernicious gas simultaneously.

Accompanying drawing explanation

Accompanying drawing 1 is the structural representation (cross section analyse and observe) of two pairs of round wire of the present utility model to physical blowing waterproofing type self-bearing type lead-in cable.

In accompanying drawing: 1, conductor; 2, insulating barrier; 3, endodermis; 4, physical blowing layer; 5, exodermis; 6, outer jacket; 7, waterstop; 8, reinforcement; 9, strengthen sheath.

Embodiment

Below in conjunction with embodiment shown in the drawings, the utility model is described in detail below:

As shown in Figure 1, a kind of two pairs of round wire are to physical blowing waterproofing type self-bearing type lead-in cable, comprise and parallel the cable unit of extension and strengthen unit, cable unit by two pairs of lines at center to and surround two pairs of right outside outer jackets 6 of line and form, every pair of line is to comprising two conductors 1, the outside of conductor 1 is surrounded with insulating barrier 2, insulating barrier 2 comprises successively the endodermis 3 that the outer wall by conductor 1 from inside to outside holds, physical blowing layer 4 and exodermis 5, the right outside of line is surrounded with waterstop 7, strengthen unit by the reinforcement 8 at center and surround outside reinforcement sheath 9 forming, outer jacket 6 is fixedly connected along its length with reinforcement sheath 9, the diameter of conductor 1 is 0.5mm, the thickness of endodermis 3 is 0.01mm, the thickness of physical blowing layer 4 is 0.14mm, the thickness of exodermis 5 is 0.05mm, the thickness of waterstop 7 is 0.15mm, the diameter of reinforcement 8 is 0.7mm, the thickness of strengthening sheath 9 is 0.8mm, above-mentioned line to be parallel lines to or twisted pair wire pair, reinforcement 8 is steel wire, insulating barrier 2 is PE, outer jacket 6, strengthening sheath 9 is PE and PVC, endodermis 3, physical blowing layer 4 and exodermis 5 are PE, the external diameter of the cable unit of this lead-in cable is 5.2mm, the external diameter of strengthening unit is 2.3mm, the amount of approximately saving PE material through rough calculation is 0.68KG/KM.

Compared to prior art, insulating barrier 2 in the design adopts endodermis 3, physical blowing layer 4 to add the structure of exodermis 5, the expanded material of physical blowing layer 4 is with low cost, quality is light, guaranteeing under the prerequisite that cable performance requires, can effectively reduce raw material consumption, and then reduce cable production cost, cost of transportation, also reduced the discharge of waste material and pernicious gas simultaneously.

Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model spirit change or modify, within all should being encompassed in protection range of the present utility model.

Claims (1)

1. two pairs of round wire are to physical blowing waterproofing type self-bearing type lead-in cable, it is characterized in that: comprise and parallel the cable unit of extension and strengthen unit, described cable unit by two pairs of lines at center to and the right outside outer jacket of line that surrounds described in two pairs form, line described in every pair is to comprising two conductors, the outside of described conductor is surrounded with insulating barrier, described insulating barrier comprises successively the endodermis that the outer wall by described conductor from inside to outside holds, physical blowing layer and exodermis, the right outside of described line is surrounded with waterstop, described reinforcement unit is by the reinforcement at center and surround outside reinforcement sheath and form, described outer jacket and described reinforcement sheath are fixedly connected along its length, the diameter of described conductor is 0.5mm, the thickness of described endodermis is 0.01mm, the thickness of described physical blowing layer is 0.14mm, the thickness of described exodermis is 0.05mm, the thickness of described waterstop is 0.15mm, the diameter of described reinforcement is 0.7mm, the thickness of described reinforcement sheath is 0.8mm, described line to be parallel lines to or twisted pair wire pair.

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