CN104795154A - Armored optical cable - Google Patents

Abstract

The invention relates to an armored optical cable, which comprises a cable core containing at least one optical fiber, an inner protecting layer (4) used for sealing the cable core, a metal armoring layer used for sealing the inner protecting layer and a disposable sheath sleeving the above structure, wherein the cable core is composed of an optical fiber bundle (1), a reinforcing member (2), a loose tube (3) and necessary filling materials; and the metal armoring layer is composed of a steel wire armored layer (5) and a metal barb armored layer (6). The steel wire armored layer is formed by wrapping stainless steel wires, the metal barb armored layer adopts a metal band provided with V-shaped or other similar shape notches, and the metal band is arranged at the periphery of the steel wire armoring layer in a longitudinal wrapping and welding or axial wrapping mode so as to enable the notches to warp outward to form barbs; the optical cable is ensured to bend naturally through reasonably setting the size and the position of the notches, and the strength of the armoring layer is considered at the same time; and the reinforcing member in the structure of the optical cable can be saved in some specific occasions because the armoring layer has a certain strength, thereby increasing the number of optical fibers inside the cable, and then being capable of improving the capacity of the optical fiber. An easily stripped disposable sleeve or a binding tape is used to package or bind the barbs, thereby preventing injuries imposed on people by the barbs in the process of packaging, transporting and installing the optical cable. The optical cable provided by the invention has the characteristics of abilities of being anti-climbing, rat-proof, theft and cutting preventing, and capable of being naturally bent and the like.

Description

Armoured cable

Technical field

Patent of the present invention relates to a kind of armoured cable structure and operation principle thereof of novelty, belongs to the technical field of electric power transfer.

Background technology

Armouring one is exactly that the outer bread one deck high strength material of cable core is used for protecting cable, in case pound, press, rack cable sheath after damage a kind of protective layer that core causes short circuit.Cable add the object of armour except strengthen the mechanical protection such as tensile strength, compression strength increase the service life and mouse bite preventing effect except, more importantly improve cable interference free performance by shielding protection.Conventional armoring material has steel band, steel wire, aluminium strip, aluminum pipe etc., wherein steel band, steel wire armor layer have high permeability, have good Magnetic Shielding Effectiveness, may be used for anti-glitch, and armoured cable directly buried installation can be made and avoid poling, and good and cheap more in practice.Armoured cable mechanical protection layer can be added on the cable of any structure, to increase the mechanical strength of cable, improves erosion prevention, is the telephone cable designed for being subject to mechanical damage and extremely erodible area.Any one mode can be adopted to lay, be more suitable for the directly buried installation of Rock Region.Armoured cable is generally fixing power cable laying, and popular is exactly be fixed on a place and substantially do not move, power line electric energy transmitting.Cable add the object of armour except more than, the mechanical protection such as tensile strength, compression strength can also be strengthened and increase the service life.Armouring have certain external force resistance performance, can also watch out for mouse and bait, be unlikely to cause electric power transfer problem through armouring, the bending radius of armouring wants large, and armour can ground connection, protection cable.Shortcoming is that high-strength and firm metal hard tube then hinders cable natural torsion, and this cable be laid in residential quarters may bring extra stolen risk to resident family.The construction of cable of features such as preventing robber's outdoor optical cable in community from entering in resident family for avoiding above-mentioned shortcoming to take into account, special proposing a kind of to there is anti-climbing, mouse bite preventing, antitheftly to cut, magnetic screen, bending radius are little.

Summary of the invention

Technical problem: technical problem to be solved by this invention provides a kind of cost of manufacture low for above-mentioned the deficiencies in the prior art, the Novel armored cable that processing technology is comparatively easy.

Technical scheme: the technical scheme of armoured cable of the present invention is: include cable conductor, sheath and double armature layer and disposable shield sleeve, be that armour is arranged on sheath periphery with existing scheme difference, be provided with the double-decker of steel wire armor layer 5 and hangnail armour 6, be provided with in this double-decker periphery the disposable pull tube material peeled off with hangnail armour (6) or structure with instant packed, transport and installation.

By such scheme, described cable core and sheath comprise conductor 1, insulator 2, filler 3, sheath 4, its essence is traditional cable configuration; Described armour is along the cable core steel wire armor layer 5 axially laid and the armour 6 being with hangnail; Disposable protection tube 7 adopts the disposable pull tube material or structure that are easy to peel off with hangnail armour 6.

Described double armature Rotating fields internal layer is preferably stainless steel steel wire part and is wrapped and forms, outer for can natural torsion hangnail armouring part and be fully combined with aforesaid steel wire part and form a kind of composite construction acting in conjunction, make described optical cable have anti-climbing, the anti-bird of protection against rodents, antitheftly to cut, can the feature such as natural torsion.Hangnail armour should use the metal material with antiseptic and rustproof function to be made, be preferably stainless steel, the metal tape of setting " V " font or other analogous shape otch can be utilized, to be welded by wraparound or wrapped mode is arranged at steel wire armor layer periphery and otch is outwards tilted and forms hangnail; Metal tape becomes be easy to bending owing to having numerous otch, by rationally arranging size incision and position to ensure that armored optical cable can take into account armour intensity by natural torsion simultaneously.

Beneficial effect: be that outermost layer arranges double armature layer, adopt such construction of cable, beneficial effect be (1) hangnail be conducive to preventing the climbing of muroid and bait, the standing and peck and sting of birds; (2) hangnail is conducive to preventing the climbing of the mankind and robber from cutting; (3) hangnail armouring can adopt the welding of metal tape wraparound or wrapped mode to process, and compares traditional stainless steel flexible hose armouring, simplifies production technology; (4) hangnail armouring is lower than directly adopting metal sleeve armouring hardness, can have with advantages such as cable core natural torsions.

Accompanying drawing explanation

Fig. 1 is the cross-sectional structure schematic diagram of armoured cable.

1. conductors, 2. insulator, 3. filler, 4. sheath, 5. steel wire armor layer, 6. hangnail armour, 7. disposable protection tube is had in figure.Wherein conductor 1, insulator 2, filler 3, sheath 4 form traditional cable conductor.

Embodiment

The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, illustrating the present invention further.

As shown in Figure 1, armoured cable, comprises and forms traditional cable conductor, sheath 4 and the armour be made up of steel wire armor layer 5, hangnail armour 6 and the disposable protection tube 7 of encapsulation by conductor 1, insulator 2, filler 3.

Embodiment 1

Armoured cable of the present invention additional three-decker can form on the basis of traditional cable, steel wire armor layer is wrapped by stainless steel steel wire and forms, be wound around density can close can be rare, its Main Function for strengthening hangnail armour intensity, to provide support and due to flexible thus make hangnail armour be coupled well with sheath; Hangnail armor material can select metal that resistance to corrosion is strong as stainless steel, alloy aluminum etc., metal tape arranges the otch of " V " font or other analogous shape, to be welded by axial wraparound or longitudinal lapping mode is closely set in outside steel wire armor layer, as shown in Figure 2, otch outwards tilts and forms hangnail, for ensureing hangnail armour intensity and with cable core natural torsion, should can rationally arranging size incision and position; Use the temporary casing encapsulation hangnail being easy to peel off, to prevent the injury of hangnail to people in optical cable packaging, transport and installation process.

Embodiment 2

Difference from Example 1 is, uses the strap being easy to tear to be wound around wrapping and replaces temporary casing.

Claims (3)

1. armoured cable, it comprises: cable conductor; Close the sheath (4) of above-mentioned cable core; Close the double armature layer of above-mentioned sheath; The disposable protection tube (7) of packaging said structure;

It is characterized in that: described double armature layer comprises the steel wire armor layer (5) and its outer hangnail armour (6) of being close to sheath (4).

2. armoured cable according to claim 1, is characterized in that: described steel wire armor layer (5) is wrapped by stainless steel steel wire or other similar material and forms.

3. armoured cable according to claim 1, is characterized in that: described disposable protection tube (7) is for being easy to the disposable pull tube material peeled off with hangnail armour (6) or structure.