CN209591582U - A kind of crosslinked polyetylene insulated fireproof cable of flexibility - Google Patents

Abstract

The utility model discloses a kind of crosslinked polyetylene insulated fireproof cables of flexibility, including the insulated wire cores being made of four sector conductors, non-hygroscopic band is coated outside every sector conductor, forms the crosslinked polyetylene insulated layer of integral structure in the gap location extrusion molding cross-linked polyethylene insulating material outside four sector conductors and between four sector conductors；The wrapped non-woven fabrics twining package tape outside crosslinked polyetylene insulated layer, the fire-retardant composite layer of glass-fiber-fabric outside non-woven fabrics twining package tape, the fire-retardant composite layer of the glass-fiber-fabric successively wrapped silicon rubber glass-fiber-fabric, alkali-free glass fiber cloth and aluminium foil glass fiber fabric from inside to outside；Semiconductive shielding layer is extruded outside glass-fiber-fabric composite layer, lead inner sheath is extruded outside semiconductive shielding layer, Self-fticking fireproof packing strip is coated in lead inner sheath, in Self-fticking fireproof packing strip outer cladding fireproof.The utility model has pulling force extra-heavy, will not fold is disconnected, resistance to vulcanization, smokeless halogen-free is nontoxic, pure oxygen is non-ignitable, moisture-proof, grease proofing, waterproof, it is anti-pollution the advantages that.

Description

A kind of crosslinked polyetylene insulated fireproof cable of flexibility

Technical field

The utility model relates to wire and cable field, specifically a kind of crosslinked polyetylene insulated fireproof cable of flexibility.

Background technique

Cable is usually by several or several groups (every group at least two), conducting wire are twisted around a center, shape Shape is similar to rope, while outer layer cover height insulating layer.

Enhancing with people to environmental protection, security against fire consciousness, the application field of fireproof cable gradually expand, It is higher to fireproof class requirement that offshore oil platform from originally has been expanded to Aeronautics and Astronautics, navigation, hospital, mall etc. Occasion, fireproof cable can in the case of fire, within a certain period of time ensure electric power and communication unimpeded, maximum limit Degree tries to gain time precious to one, and reduces the loss of casualties and lives and properties, and when fire, environment-friendly cable can be accomplished not only to be not easy Burning, moreover it is possible to prevent the sprawling of flame and the expansion of disaster after burning.

The intrusion of moisture be often power cable by destroy, service life is affected the main reason for.Moisture immerses Approach is mainly to cause oxidation, the corrosion of conductor out of the end intrusion cable of the sheath and cable of cable inner conductor, from And the electrical property of cable is influenced, or even be abnormal line-outage contingency；Moisture penetrates into insulating layer, under the action of strong electrical field, insulation Layer can generate " water tree ", accelerate the voltage ageing of cable, lead to cable breakdown accident, reduce cable service life.In order to prevent The intrusion of moisture, it is desirable that close very close to each other between each structure of cable.

Utility model content

Purpose of utility model: the purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of flexible friendship Join polyethylene insulation fireproof cable.

Technical solution: in order to solve above-mentioned purpose, the crosslinked polyetylene insulated fireproof cable of flexibility described in the utility model, Including insulated wire cores；The insulated wire cores include four sector conductors, and non-hygroscopic packet is coated outside every sector conductor Band forms integrated knot in the gap location extrusion molding cross-linked polyethylene insulating material outside four sector conductors and between four sector conductors The crosslinked polyetylene insulated layer of structure；Wrapped non-woven fabrics twining package tape, the glass outside non-woven fabrics twining package tape outside crosslinked polyetylene insulated layer The fine fire-retardant composite layer of cloth, the fire-retardant composite layer of the glass-fiber-fabric successively wrapped silicon rubber glass-fiber-fabric, alkali-free glass fiber cloth from inside to outside And aluminium foil glass fiber fabric；Semiconductive shielding layer is extruded outside glass-fiber-fabric composite layer, lead inner sheath is extruded outside semiconductive shielding layer, It is coated with Self-fticking fireproof packing strip in lead inner sheath, in Self-fticking fireproof packing strip outer cladding fireproof.

It is further improved, the inside of the crosslinked polyetylene insulated layer is multiple for filling gap between sector conductor Taper obturator, each taper obturator spaced set.

It is further improved, the silicon rubber glass-fiber-fabric is on the outside of non-woven fabrics twining package tape, with a thickness of 2-3mm.

It is further improved, the sector conductor is more stranded conductors of cathode copper single solid conductors or cathode copper.

Be further improved, the alkali-free glass fiber cloth with a thickness of 3-4mm.

Be further improved, the aluminium foil glass fiber fabric with a thickness of 4-5mm.

It is further improved, the fireproof is made into fiberglass sleeve with high loft glass fibre, and applies coated with import Good silicon rubber forms.

The utility model has the advantages that

The utility model compared with prior art, using sector conductor, reduces packing material, decreases stranding and cuts Face；The corresponding insulating layer of original each conductor is changed to multiple conductors and shares an insulating layer, greatly reduces Insulation Material Use, reduce costs, and change the structure of existing insulating layer, improved insulating layer can fill conductor and conductor Between gap, and to be subjected to displacement between conductor；And in conductor outer cladding non-hygroscopic band, prevent conductor By humidity and the outflow and slight mechanical damage of conductor impregnating agent are prevented, and is also played to the isolation between each conductor；In Successively wrapped multi-layer fire-retarded layer from inside to outside outside core, has greatly reinforced fireproofing of cable performance；Lead inner sheath has completely not Water penetration is reliably prevented from the intrusion of water moisture and moisture, good airproof performance；When cable is on fire, Self-fticking fireproof packing strip The carburization zone for forming heat-insulated resistance oxygen plays protection to the cable wound, so that flame be prevented to prolong cable expansion burning；Fire prevention shield It applies high loft glass fibre and is made into fiberglass sleeve, and apply and formed coated with the good silicon rubber of import, drawn so that cable has Power extra-heavy, will not fold is disconnected, resistance to vulcanization, smokeless halogen-free is nontoxic, pure oxygen is non-ignitable, moisture-proof, grease proofing, waterproof, it is anti-pollution the advantages that.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

As shown in Figure 1, a kind of crosslinked polyetylene insulated fireproof cable of flexibility described in the utility model, including insulated wire Core；The insulated wire cores include four sector conductors 1, are more stranded conductors of cathode copper single solid conductors or cathode copper； Non-hygroscopic band 2 is coated outside every sector conductor, conductor can be prevented by humidity and prevent conductor impregnating agent outflow and Slight mechanical damage, and also play to the isolation between each conductor；Outside four sector conductors and four sector conductors Between gap location extrusion molding cross-linked polyethylene insulating material formed integral structure crosslinked polyetylene insulated layer 3；In crosslinked polyethylene Wrapped non-woven fabrics twining package tape 4 outside insulating layer, the fire-retardant composite layer 5 of glass-fiber-fabric, the glass-fiber-fabric are fire-retardant outside non-woven fabrics twining package tape Composite layer from inside to outside successively the wrapped silicon rubber glass-fiber-fabric 51 with a thickness of 2-3mm, the alkali-free glass fiber cloth 52 with a thickness of 3-4mm with And the aluminium foil glass fiber fabric 53 with a thickness of 4-5mm, wherein silicon rubber glass-fiber-fabric is with high temperature resistant, anti-corrosion, high-strength glass fibre Cloth rolls or impregnates through organic silicon rubber, so that cable has resistance to ozone, oxygen, light and weathering aging, field uses weather-proof Property it is excellent, and antiseptic property is high；Alkali-free glass fiber cloth is woven with alkali-free glass fibre, and glass fibre is free of in dip-coating appoints What halogen (such as chlorine, bromine), the flame-retardant mixture solution equipped with highly effective inorganic flame-proof agent are made through processes such as impregnation solidifications, Be after finished product it is two-sided with gluey coating, color is milky, which absorbs amount of heat simultaneously energy when by flame combustion It prevents flame from passing through, completely cut off air, inorganic fire-retarded complexing agent can dilute the crystallization water out on surface and reduce heat invasion, protect cable The advantages that from burning, while the smog generated in combustion is less, is reduced environmental pollution；Aluminium foil glass fiber fabric makes electricity Cable vapor permeability is smaller, more enhances water vapor rejection effect, and also have high temperature resistant, corrosion resistance；It is arranged from inside to outside Flame retarding construction, so that the anti-flammability of cable is greatly improved, it is than flame retardant cable A class standard also higher；

Semiconductive shielding layer 6 is extruded outside the fire-retardant composite layer 5 of glass-fiber-fabric, lead inner sheath 7 is extruded outside semiconductive shielding layer, It is coated with Self-fticking fireproof packing strip 8 in lead inner sheath, in Self-fticking fireproof packing strip outer cladding fireproof 9, the fireproof It is made into fiberglass sleeve with high loft glass fibre, and applies and is formed coated with the good silicon rubber of import, so that cable high temperature resistant degree It can reach 1650 DEG C.

The inside of the crosslinked polyetylene insulated layer is multiple for filling the taper obturator in gap between sector conductor 10, each taper obturator spaced set, the taper obturator is depending on the number of conductors of cable, so that leading in cable It is seamless between body, it is not susceptible to be displaced.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art It for art personnel, without departing from the principle of this utility model, can also make several improvements, these improvement also should be regarded as The protection scope of the utility model.

Claims (5)

1. a kind of crosslinked polyetylene insulated fireproof cable of flexibility, it is characterised in that: including insulated wire cores；The insulated wire cores packet Four sector conductors are included, non-hygroscopic band is coated outside every sector conductor, outside four sector conductors and four are fanned Gap location extrusion molding cross-linked polyethylene insulating material between shape conductor forms the crosslinked polyetylene insulated layer of integral structure；It is poly- in crosslinking Wrapped non-woven fabrics twining package tape outside ethylene insulating layer, the fire-retardant composite layer of glass-fiber-fabric outside non-woven fabrics twining package tape, the glass-fiber-fabric resistance Fire composite layer successively wrapped silicon rubber glass-fiber-fabric, alkali-free glass fiber cloth and aluminium foil glass fiber fabric from inside to outside；In glass-fiber-fabric composite layer Semiconductive shielding layer is extruded outside, lead inner sheath is extruded outside semiconductive shielding layer, is coated with tack fire prevention in lead inner sheath Band, in Self-fticking fireproof packing strip outer cladding fireproof.

2. the crosslinked polyetylene insulated fireproof cable of flexibility according to claim 1, it is characterised in that: the poly- second of the crosslinking The inside of alkene insulating layer is multiple for filling the taper obturator in gap between sector conductor, and each taper obturator is equidistant Setting.

3. the crosslinked polyetylene insulated fireproof cable of flexibility according to claim 1, it is characterised in that: the silicon rubber glass Fine cloth is on the outside of non-woven fabrics twining package tape, with a thickness of 2-3mm.

4. the crosslinked polyetylene insulated fireproof cable of flexibility according to claim 1, it is characterised in that: the alkali-free glass fiber Cloth with a thickness of 3-4mm.

5. the crosslinked polyetylene insulated fireproof cable of flexibility according to claim 1, it is characterised in that: the aluminium foil glass fiber Cloth with a thickness of 4-5mm.