CN205920811U - Halogen -free flame -retardant cable - Google Patents

Abstract

The utility model discloses a halogen -free flame -retardant cable, include cable inner core and the protective layer that wraps up the cable inner core, the protective layer includes shell body and the protection inlayer that wraps up the cable inner core, be equipped with on the protection inlayer outer wall can be inconsistent with the shell body friction grain. Can protect to cable inner core parcel through the effect of protective layer at halogen -free flame -retardant cable, and its protective layer divide into shell body and protection inlayer, when its exogenic action is on the protective layer like this, its effort only can act on with the shell body on, just so can avoid protecting inlayer and cable inner core to produce the displacement, so as to makes the protective layer better to cable inner core protection, and still friction grain increases and the frictional force of shell body through setting up on the outer wall of protection inlayer, just so can make be connected more firm between protection inlayer and the shell body.

Description

Halogen-free flame-retardant cable

Technical field

This utility model is related to a kind of electrical distribution field, more specifically, it relates to a kind of halogen-free flame-retardant cable.

Background technology

The high-voltage cable that uses at present, cable, for ensureing that it transmits electric energy over a long distance, cable will have enough Tensile strength, in the prior art all using the setting high strength wire rope method of making core inside cable, to improve cable The tensile strength of line, lays the requirement of transmission cable cable to reaching large span.But, in the middle of practical application, due to adopting Cable with high strength wire rope as core is although improve the overall tensile strength of cable, but the ratio due to steel wire rope Weight is heavier, results in the overall weight of cable and problem is significantly increased, and ultimately results in large span laying transmission of electricity cable difficult to realize The purpose of cable.

And in the Chinese patent of patent document Publication No. cn 202093876 u, disclose a kind of cable of one kind, solution Existing cable of having determined lead to because core is done using steel wire rope cable overall weight be significantly increased lead to not enable big across Away from the technical problem of laying transmission cable cable, and provide a kind of tensile strength height, the cable being capable of large span laying of light specific gravity Line.Concrete technical scheme includes: this cable includes conductive layer and positioned at the inner sandwich layer within described conductive layer, described inner sandwich layer For frp muscle, also set up an insulation sleeve outside described conductive layer.But all relatively smooth outside its conductive layer, so it is arranged on Insulation sleeve on conductive layer outside tend to skid so that insulation sleeve easily outside conductive layer on slide so that leading Electric layer is exposed so that insulating barrier loses the protected effect that this has.

Utility model content

In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of halogen-free flame-retardant cable, can The each several part of cable can firmly combine, and can effectively avoid each portion of cable to produce and skid.

For achieving the above object, this utility model provides a kind of following technical scheme: halogen-free flame-retardant cable, including cable Inner core and the protective layer by cable inner core parcel, described protective layer includes shell body and the protection internal layer by cable inner core parcel, Described protection inner layer outer wall is provided with form friction pattern that can be inconsistent with shell body.

By adopting technique scheme, the effect that can pass through protective layer in halogen-free flame-retardant cable is wrapped up to cable inner core Protect, and its protective layer is divided into shell body and protection internal layer, when so its external force acts on the protection layer, its active force Only can act on shell body on, this makes it possible to avoid protecting internal layer to produce displacement with cable inner core such that it is able to make protection Layer is preferably protected to cable inner core, and to increase and shell also by setting form friction pattern on the outer wall of protection internal layer The frictional force of body, this makes it possible to so that be connected between protection internal layer and shell body is more firm.

Preferably, described form friction pattern is arranged on the external screw thread on protection inner layer outer wall for spiral.

By adopting technique scheme, so its shell body just can be set in protection by externally threaded effect rotation On internal layer, thus facilitating the installation of shell body.

Preferably, described friction is protrusion on protection inner layer outer wall for the projection.

By adopting technique scheme, by the effect of protrusion, just can make on the stuck internal layer in protection of shell body, Move so as to effectively avoid producing in all directions of shell body.

Preferably, it is filled with anti-skidding lining in the gap between protection internal layer and cable inner core.

By adopting technique scheme, can be by between protection internal layer and cable inner core by the effect of anti-skidding lining Gap fill so that cable inner core protection internal layer in install more stable, its anti-skidding lining can also play damping The effect of buffering is such that it is able to be effectively protected to cable inner core.

Preferably, described anti-skidding lining is made up of asbestos fibre.

By adopting technique scheme, by the fire protecting performance of asbestos fibre itself it becomes possible to greatly enhance this Halogen The flameproof effect of flame retardant cable.

Preferably, described cable inner core includes the conductive core being made up of many conductor wires and is wrapped in outside conductive core Insulating barrier on wall.

By adopting technique scheme, conductive core can be carried out by parcel constraint by the effect of insulating barrier, and Good anti-creeping effect can also be played.

Preferably, described protection internal layer inwall is additionally provided with fireprotection layer.

By adopting technique scheme, it is arranged on the fireprotection layer of protection internal layer and can effectively shield heat away be existed Outside fireprotection layer, thus greatly improving the flameproof effect of this halogen-free flame-retardant cable.

Brief description

Fig. 1 is the structural representation of embodiment one；

Fig. 2 is the enlarged drawing of a in Fig. 1；

Fig. 3 is the structural representation of embodiment two；

Fig. 4 is the structural representation that in embodiment one, cable inner core is arranged for spiral；.

Reference: 1, protective layer；11st, shell body；12nd, protect internal layer；13rd, fireprotection layer；14th, form friction pattern；2nd, cable core Line；21st, conductive core；22nd, insulating barrier；3rd, anti-skidding lining；4th, He Yongteng.

Specific embodiment

Below in conjunction with accompanying drawing, this utility model is described in further detail.

This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model Field technique personnel can make to the present embodiment after reading this specification as needed does not have the modification of creative contribution, but As long as all being protected by Patent Law in right of the present utility model.

Embodiment one: as shown in Fig. 2 a kind of halogen-free flame-retardant cable, protective layer 1 can be passed through in halogen-free flame-retardant cable Effect protects to cable inner core parcel, and its protective layer 1 is divided into shell body 11 and protection internal layer 12, so its outer masterpiece When on protective layer 1, its active force only can act on shell body 11 on, this makes it possible to avoid to protect in internal layer 12 and cable Core produces displacement such that it is able to make protective layer 1 preferably cable inner core be protected, and the outer wall in protection internal layer 12 On to increase frictional force with shell body 11 also by setting form friction pattern 14, this makes it possible to so that protecting internal layer 12 and shell body Connect between 11 is more firm.

As depicted in figs. 1 and 2, and it is filled with by asbestos fibre in the gap between protection internal layer 12 and cable inner core Constitute anti-skidding lining 3.Gap between protection internal layer 12 and cable inner core can be filled by the effect of anti-skidding lining 3, from And make cable inner core protection internal layer 12 in installation more stable, its anti-skidding lining 3 can also play the work of damping, buffering With such that it is able to be effectively protected to cable inner core.

And its anti-skidding lining 3 can also be made up of glass fibre or fire prevention polyster fibre.

As shown in Fig. 2 and being additionally provided with fireprotection layer 13 in protection internal layer 12 inwall.So fireprotection layer 13 and anti-skidding lining 3 A good fire district just can be formed, thus greatly enhancing the flameproof effect of whole halogen-free flame-retardant cable.

As depicted in figs. 1 and 2, the conductive core that the cable inner core being arranged in protective layer 1 is then made up of many conductor wires Body 21 and the insulating barrier 22 being wrapped on conductive core 21 outer wall.It is arranged on shell body 11 in halogen-free flame-retardant cable, protection Internal layer 12 and insulating barrier 22 are all mixed with Teflon, and its Teflon has good flameproof effect such that it is able to greatly increase outer The flameproof effect of housing 11, protection internal layer 12 and insulating barrier 22.

The cable inner core that it is arranged in protective layer 1 has two, and can shown be parallel to each other as shown in Figure 1 to Figure 3 It is arranged in protective layer 1 it is also possible to as shown in figure 4, mutual spiral winding is arranged in protective layer 1.

As shown in Figure 1 and Figure 4, the external screw thread that the form friction pattern 14 being arranged on protection internal layer 12 outer wall is arranged for spiral. So its shell body 11 just can be set on protection internal layer 12 by externally threaded effect rotation, thus facilitating shell body 11 Install.

Embodiment two: as shown in figure 3, with being distinguished as of embodiment one, rub as projection on protection internal layer 12 outer wall Protrusion, the planform of its protrusion can be simple rectangle or arc-shaped is raised, its structure simple such that it is able to side Just produce and by the effect of protrusion, just can make on the stuck internal layer 12 in protection of shell body 11 such that it is able to effective Avoid producing in all directions of shell body 11 and move.

Claims (7)

1. a kind of halogen-free flame-retardant cable, is characterized in that: include cable inner core and the protective layer (1) by cable inner core parcel, described Protective layer (1) includes shell body (11) and the protection internal layer (12) by cable inner core parcel, on described protection internal layer (12) outer wall It is provided with form friction pattern (14) that can be inconsistent with shell body (11).

2. halogen-free flame-retardant cable according to claim 1, is characterized in that: described form friction pattern (14) is arranged on protection for spiral External screw thread on internal layer (12) outer wall.

3. halogen-free flame-retardant cable according to claim 1, is characterized in that: described friction is protecting internal layer (12) outward for projection Protrusion on wall.

4. halogen-free flame-retardant cable according to claim 1, is characterized in that: between protection internal layer (12) and cable inner core It is filled with anti-skidding lining (3) in gap.

5. halogen-free flame-retardant cable according to claim 4, is characterized in that: described anti-skidding lining (3) is made up of asbestos fibre.

6. halogen-free flame-retardant cable according to claim 1, is characterized in that: described cable inner core is included by many conductor wire structures The conductive core (21) becoming and the insulating barrier (22) being wrapped on conductive core (21) outer wall.

7. halogen-free flame-retardant cable according to claim 1, is characterized in that: described protection internal layer (12) inwall is additionally provided with fire prevention Layer (13).