CN207319723U - A kind of water-stop foam electric wire cable - Google Patents

Abstract

The utility model discloses a kind of water-stop foam electric wire cable,Including stranded conductor,Foamed insulation body and the outer band water blocking layer of conductor,Stranded conductor,Foamed insulation body,Air duct and external conductor collectively constitute coaxial cable,Foamed insulation body is wrapped in outside stranded conductor,Air duct outer layer covers have external conductor,And stranded conductor,Foamed insulation body,Air leads to,The outer band water blocking layer outside of conductor is provided with fixed band,Fixed band outer layer is fixed with restrictive coating,Fixed band collectively forms electric wire with restrictive coating,The utility model functional diversities,It is firm in structure simple,By setting foamed insulation body transmission delay small,Show good transmission characteristic,Water blocking layer with sealant make it that electric wire is soft,Stable structure,Will not because bending and caused by interface debonding produce gap,Salable gap again,Play the role of waterproof to block water.

Description

A kind of water-stop foam electric wire cable

Technical field

Electric wire field is the utility model is related to, is specially a kind of water-stop foam electric wire cable.

Background technology

With the prosperity of information communication network, electric wire develops from simple power transmission to multifunction, in machine The data cable used between device needs high speed, large capacity, excellent transmission characteristic at high frequencies, navigates by water under water Device, marine locator, hydraulic engineering, oil platform, tunnel, underground engineering and underground cable etc., which are required to cable, has watertight Sealing property, but in use, since environment or artificial factor cause the destruction of protective coverings of cable, water will for cable at present Permeated along cable internal structure gap in cable length direction, cause cable to scrap, or even caused damage to electrical appliance, The cable used in the differential transmission of high speed is used by the foamed insulation body manufactured by physical blowing mode, general feelings mostly Under condition, for the insulator of high foaming rate, be easy to occur that resin component is few, mechanical strength is insufficient, easily produce damage by pressure and The problems such as press-bending, therefore we make this improvement, propose a kind of water-stop foam electric wire cable.

Utility model content

The purpose of this utility model is to provide a kind of water-stop foam electric wire cable, to solve to carry in above-mentioned background technology The problem of going out.

To achieve the above object, the utility model provides following technical solution：A kind of water-stop foam electric wire cable, including The outer band water blocking layer of stranded conductor, foamed insulation body and conductor, stranded conductor, foamed insulation body, air duct and external conductor Coaxial cable is collectively constituted, foamed insulation body is wrapped in outside stranded conductor, and air duct outer layer covers have external conductor, and twist Close conductor, foamed insulation body, air duct and external conductor and collectively constitute coaxial cable, coaxial cable outer wall is provided with outside conductor Band water blocking layer, the outer band water blocking layer outside of conductor are provided with fixed band, and fixed band outer layer is fixed with restrictive coating, fixed band with Restrictive coating collectively forms electric wire.

Preferably, be provided with stranded conductor internal clearance water blocking layer between stranded conductor and foamed insulation body, the water blocking layer by Sealant fills to be formed, and has high resiliency after vulcanizing based on sealant, manufactured electric wire is relatively soft, due to a degree of Interfacial adhesion act on so that electric wire stable structure, will not because bending and caused by interface debonding produce gap.

Preferably, air duct is provided with outside foamed insulation body, foamed insulation body is the crystallization of polyethylene, polystyrene Polymer, the small transmission loss of dielectric constant of polyethylene is small, but due to being polymers for general use, so cost is low, polystyrene The crystalline melt point of crystalline melt point and glass transition temperature in polyethylene with the temperature range from low 50 DEG C of the crystalline melt point.

Preferably, the outer band water blocking layer of conductor using fiberglass cloth tape, non-woven fabric of polyester fiber band is wrapped forms, around Bag rear surface is coated with sealant, and one side seal clearance, plays the role of waterproof and block water, and on the other hand increases interfacial adhesion Power so that electric wire construction package is stablized relatively under high longitudinal hydraulic pressure effect.

Preferably, for stranded conductor by tinned copper wire through being twisted, external conductor is the metal fine laterally wound, conductive Property it is good, have high speed, large capacity, high-frequency excellent transmission characteristic.

Compared with prior art, the beneficial effects of the utility model are：

1st, the stranded conductor internal clearance water blocking layer of the utility model is to be filled by sealant and form water blocking layer, conductor outsourcing Band water blocking layer is to form water blocking layer by sealant coating, and the sealant is possesses low-smoke non-halogen flame-retardant, for metallic conductor, insulation Material, jacket material etc. can produce the high molecular material mixture of cohesive force, be adapted to the processing technologys such as coating, perfusion, extrusion molding, So that manufactured cable is soft, stable structure, will not because bending and caused by interface debonding produce gap, and salable gap, rise The effect to block water to waterproof.

2nd, the utility model is by setting restrictive coating as LSOH anti-flaming cross-linked polyolefin mixture, LSOH anti-flaming Thermoplastic elastomer (TPE) and synthetic rubber mixture, have insulation, protection electric wire effect, and fixed band can protect coaxial electrical Cable, makes more coaxial cables parallel or twisted.

3rd, the utility model is by setting cross blossom type air duct to provide space for foamed insulation body expanded by heating, both Electric wire is not damaged, and plays foamed insulation body performance to greatest extent, and inner containment stranded conductor quantity is more, and transmission is held Amount is big, and makes that electric wire internal structure is firm, external structure is beautiful.

4th, for the utility model by setting the electric wire with foamed insulation body, its transmission delay is small, shows good Transmission characteristic, the dielectric properties of high density polyethylene (HDPE) are small, be conducive to lower cable transmission loss, low density polyethylene (LDPE) is point The many molecular structures of branch, melt viscosity is high, and high density polyethylene blending can improve foam degrees, and the bubble of polystyrene occurs Number is more, polyethylene and polystyrene crystalline melt point difference can prevent the foamed gas in resin bed during bubble growth from leaking out with And prevent bubble merging and coarsening.

Brief description of the drawings

Fig. 1 is the horizontal meeting structure diagram of the utility model electric wire；

Fig. 2 is the utility model electric wire overall structure diagram；

Fig. 3 is the utility model stranded conductor structure diagram.

In figure：1- air ducts；2- stranded conductors；3- foamed insulation bodies；4- fixes band；5- coaxial cables；6- restrictive coatings； 7- external conductors；The outer band water blocking layer of 8- conductors；9- electric wires；10- stranded conductor internal clearance water blocking layers.

Embodiment

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work All other embodiments obtained, shall fall within the protection scope of the present invention.

- 3 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of water-stop foam electric wire cable, including twist Close the outer band water blocking layer 8 of conductor 2, foamed insulation body 3 and conductor, stranded conductor 2, foamed insulation body 3, air duct 1 and outside Conductor 7 collectively constitutes coaxial cable 5, and foamed insulation body 3 is wrapped in outside stranded conductor 2, and 1 outer layer covers of air duct have outside Conductor 7, and stranded conductor 2, foamed insulation body 3, air duct 1 and external conductor 7 collectively constitute coaxial cable 5, coaxial cable 5 Outer wall is provided with the outer band water blocking layer 8 of conductor, and outer 8 outside of band water blocking layer of conductor is provided with fixed band 4,4 outer layer of fixed band Restrictive coating 6 is fixed with, fixed band 4 collectively forms electric wire 9 with restrictive coating 6.

Stranded conductor internal clearance water blocking layer 10 is provided between stranded conductor 2 and foamed insulation body 3, the water blocking layer is by sealing Agent fills to be formed, and has high resiliency after vulcanizing based on sealant, manufactured electric wire 9 is relatively soft, due to a degree of boundary The effect of face cohesive force so that 9 stable structure of electric wire, will not because bending and caused by interface debonding produce gap, foamed insulation Air duct 1 is provided with outside body 3, foamed insulation body 3 is polyethylene, the crystalline polymer of polystyrene, the dielectric of polyethylene The small transmission loss of constant is small, and due to being polymers for general use, so cost is low, the crystalline melt point of polystyrene and vitrifying turn Crystalline melt point of the temperature in polyethylene with the temperature range from low 50 DEG C of the crystalline melt point, the outer band water blocking layer 10 of conductor is adopted With fiberglass cloth tape, non-woven fabric of polyester fiber band is wrapped forms, and wrapped rear surface is coated with sealant, between on the one hand sealing Gap, plays the role of waterproof and blocks water, and on the other hand increases interfacial adhesion so that the electric wire 9 under high longitudinal hydraulic pressure effect Construction package is stablized relatively, and for stranded conductor 2 by tinned copper wire through being twisted, external conductor 7 is the metal fine laterally wound, Electric conductivity is good, has high speed, large capacity, high-frequency excellent transmission characteristic.

Operation principle：The utility model is by setting a kind of foamed insulation body for stably realizing high-foaming and micro air bubble 3,9 high-speed transfer of electric wire and low transmission delay, mechanical strength are enabled to, it is close in the filling of the periphery of stranded conductor 2 Dosage form is sealed into stranded conductor internal clearance water blocking layer 10, makes electric wire 9 relatively soft, due to a degree of interfacial adhesion masterpiece With so that 9 stable structure of electric wire, will not because bending and caused by interface debonding produce gap, pass through on the periphery of conductor For physical blowing formed with foamed insulation body 3, foamed insulation body 3 is containing crystalline polymer polyethylene and polymers polystyrene Blend, the small transmission loss of dielectric constant of polyethylene is small, but due to being polymers for general use, so cost is low, polystyrene The crystalline melt point of crystalline melt point and glass transition temperature in polyethylene with the temperature range from low 50 DEG C of the crystalline melt point, It can prevent the foamed gas in resin bed during bubble growth from leaking out and preventing that bubble from merging and coarsening, polyethylene lead to Cross blending crystallization temperature or the low polymers polystyrene of glass transition temperature and carry out physical blowing, so that Simultaneous Stabilization Realize high-foaming and micro air bubble, can obtain can high-speed transfer and it is low transmission delay, mechanical strength have hair Steep the electric wire 9 of insulator 3.Further, since chemical foaming agent is not contained in electric wire 9, so foaming agent will not be produced Residue the problems caused by, foam degrees can be obtained and change few insulator.

While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from the principle of the utility model and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of water-stop foam electric wire cable, including stranded conductor（2）, foamed insulation body（3）With band water blocking layer outside conductor （8）, it is characterised in that：Foamed insulation body（3）It is wrapped in stranded conductor（2）Outside, air duct（1）Outer layer covers have outside to lead Body（7）, and stranded conductor（2）, foamed insulation body（3）, air duct（1）And external conductor（7）Collectively constitute coaxial cable （5）, coaxial cable（5）Outer wall is provided with the outer band water blocking layer of conductor（8）, the outer band water blocking layer of conductor（8）Outside is provided with Fixed band（4）, fixed band（4）Outer layer is fixed with restrictive coating（6）, fixed band（4）With restrictive coating（6）Collectively form electric wire （9）.

A kind of 2. water-stop foam electric wire cable according to claim 1, it is characterised in that：Stranded conductor（2）And foaming Insulator（3）Between be provided with stranded conductor internal clearance water blocking layer（10）.

A kind of 3. water-stop foam electric wire cable according to claim 1, it is characterised in that：Foamed insulation body（3）It is exterior It is provided with air duct（1）, foamed insulation body（3）For polyethylene, the crystalline polymer of polystyrene.

A kind of 4. water-stop foam electric wire cable according to claim 1, it is characterised in that：The outer band water blocking layer of conductor （8）Using fiberglass cloth tape, non-woven fabric of polyester fiber band is wrapped forms, and wrapped rear surface is coated with sealant.

A kind of 5. water-stop foam electric wire cable according to claim 1, it is characterised in that：Stranded conductor（2）By tin plating Copper wire is through being twisted, external conductor（7）For the metal fine laterally wound.