CN207489522U - A kind of high flexibility shell-less aluminum alloy conductor power cable - Google Patents

Abstract

The utility model discloses a kind of high flexibility shell-less aluminum alloy conductor power cables, and including cable core, the cable core is twisted by several insulated wire cores；The netted gasket for packings of high fire-retardance pp are equipped in the gap location of cable core, the wrapped glass fiber tape outside cable core, inner sheath is extruded outside glass fiber tape, fire proof heat-insulation layer is externally provided in inner sheath, in fire proof heat-insulation layer external galvanized layer steel-tape armouring layer, high fire-retardance band glue heat-shrink tube is externally provided in galvanized steel strip armor, fire resistant coating is coated outside high fire-retardance band glue heat-shrink tube.The utility model has the performances such as fire resisting, high temperature resistant, fire-retardant and heat-proof quality.

Description

A kind of high flexibility shell-less aluminum alloy conductor power cable

Technical field

The utility model is related to electric wire field, in particular to a kind of high flexibility shell-less aluminium alloy conductor electric power electricity Cable.

Background technology

With the fast development of Chinese economy, the high level and super-huge building in domestic cities and towns are also more and more, due to big It is densely populated in building, in addition to require its safety fire fighting facility must it is complete other than, once occur fire, control electric power, monitoring, The circuit of the systems such as guiding and alarm must also maintain to work normally.For building, fire safety is most important, most needs It pays close attention to and primarily solves the problems, such as.At present, it in some big and medium-sized cities, has been distinctly claimed public place building, high-rise, super-huge built Environmental-protection flame-retardant, fire-resisting cable need to be used by building, and to prevent when fire occurs, can ensure that supply line is just within the predetermined time Often power supply, and toxic and harmful gas will not be generated because of burning.Thus, it is desirable to these important lines must use safety can The fireproof cable leaned on.

With the continuous development of China's industry, China is comprehensively into Electrification Age, power cable usage amount at present Increasing, the conductor main component for manufacturing cable is copper, accounts for about the 70% of total copper consumption.But China's copper resource is very short, with The exhaustion of COPPER IN CHINA resource, COPPER IN CHINA 80% needs import, and dependence is big.With constantly riseing for copper valency, replaced with aluminium Copper is the inexorable trend of electric wire development.More than 80% electric wire of France is aluminium conductor, and Japanese aluminum conductor also accounts for 50% More than.China's bauxite resource very abundant, but application amount is less than 1%, it is main still because of the immature institute of aluminum conductor manufacturing technology It causes, therefore it is the key that solve the problems, such as this to obtain technical break through.

Past aluminium conductor electric wire, since the mechanical performances such as the intensity of aluminium and elongation percentage can not meet requirement, while again There is no fireproofing function.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of high flexibility shell-less aluminum alloy conductor power cables.

A kind of high flexibility shell-less aluminum alloy conductor power cable described in the utility model, including cable core, the cable core It is twisted by several insulated wire cores；The netted gasket for packings of high fire-retardance pp, the wrapped glass outside cable core are equipped in the gap location of cable core Glass fiber band, extrudes inner sheath outside glass fiber tape, and fire proof heat-insulation layer is externally provided in inner sheath, in fire proof heat-insulation layer external galvanized layer Steel-tape armouring layer is externally provided with high fire-retardance band glue heat-shrink tube in galvanized steel strip armor, and coating is anti-outside high fire-retardance band glue heat-shrink tube Sealing wax.

In the utility model, it is preferable that the insulated wire cores include aluminium alloy conductor, and friendship is extruded outside aluminium alloy conductor Join polyethylene layer, the wrapped environmental protection high fire-retardance alkali-free glass cloth braid over braid outside crosslinked polyetylene insulated layer, in environmentally friendly high resistant Combustion alkali-free glass cloth braid over braid is externally provided with armored fireproofing layer.

In the utility model, it is preferable that the fire proof heat-insulation layer is by compound glass fiber band and minerals fireproof Silicon rubber composite tape layers are formed.

Preferably, the armored fireproofing layer is the chain armouring of buckle type in galvanized steel strip or stainless steel band.

Preferably, armouring gear fire bed is the chain armouring of buckle type in galvanized steel strip or stainless steel band.

Preferably, the inner sheath is woven into after pipe by alkali-free glass fibre band and is coated with organic high temperature-resistant silica gel through high temperature It handles.

The beneficial effects of the utility model are：

（1）Aluminum alloy conductor cable function admirable, conductor flexibility is good, and resistance to compression croop property is close with copper conductor, can wait Effect replaces copper conductor cable, and solves the problems such as electrician's fine aluminium conductor is oxidizable, creep-resistant property is poor, and material cost compared with It is low, economic performance is excellent, great amount of investment cost can be saved.

（2）Cable insulation uses crosslinked polyetylene insulated layer, and isolation layer intensity is high, softness is flexible, has tack, sealing Property it is fine, it is nonhygroscopic, do not absorb water, be not afraid of spray, vibrations；Mechanically and electrically excellent insulation performance；Low smoke, zero halogen, heavy metal free, nothing Poison is harmless.

（3）The netted gasket for packings of high fire-retardance pp are filled, light specific gravity, smoke density is low so that cable has a high temperature resistant, flame resistant, Not smoke and it is not halogen the features such as.

（4）The inner sheath is woven into after pipe by alkali-free glass fibre band and is coated with organic high temperature-resistant silica gel through high-temperature process It forms, there are the performances such as fire-retardant, heat-insulated, heat preservation, anti-electricity, softness, its flexibility can be maintained in the case of subzero 54 degrees Celsius, In 260 degrees Celsius of sustainable work, reliably protecting is provided at 550 DEG C, anti-heat wave is resistant to≤1100 DEG C of high-temperature steels in short-term The impact of water.

（5）There is chain armored fireproofing layer in one layer of galvanized steel strip or stainless steel band outside insulated wire cores, buckle type connects in steel band It is close, securely to lock sheathed structure, can be subjected to that 1400 DEG C of high-temp combustion is non-fusible, there is very strong impact resistance, and electricity Flexibility, the bending property of cable are excellent, can reach 7 times of bending radius requirement.

（6）Compound glass fiber band and ceramic fireproof silicon rubber composite band fire proof heat-insulation layer are equipped in cable, This fire proof heat-insulation layer flexibility in normal use is good, and when encountering high-temp combustion, fiber mesh seal forms good resistance Thermal insulation layer is fired, can limit or greatly reduces the external high temperature conduction of sheath and insulation inwardly, internal core is protected not to be damaged Wound improves the fire resisting of cable, high temperature resistant, fire-retardant and heat-proof quality, can ensure cable under combustion case, can be normal for a long time It uses.

（7）High fire-retardance band glue heat-shrink tube is equipped in cable outermost layer, which uses high-quality, soft cross-linked polyolefin Material, internal layer hot melt adhesive Compound Machining form, excellent with insulating corrosion, wear-resisting, low melting point, waterproof, sealing and high adhesiveness etc. Point so that cable improves mechanical protection intensity while flexibility is kept, in order to which the pipe is made to have fire protecting performance, in height Fire resistant coating is coated outside inhibiting tape glue heat-shrink tube.

Description of the drawings

Fig. 1 is the structure diagram of the utility model.

Specific embodiment：

In the following with reference to the drawings and specific embodiments, the utility model is furtherd elucidate, it should be understood that these embodiments are only used for Illustrate the utility model rather than limitation the scope of the utility model, after the utility model has been read, art technology Personnel fall within the application range as defined in the appended claims to the modification of the various equivalent forms of the utility model.

As shown in Figure 1, a kind of high flexibility shell-less aluminum alloy conductor power cable described in the utility model, including cable Core, the cable core are twisted by three insulated wire cores, this insulated wire cores includes aluminium alloy conductor 1, are squeezed outside aluminium alloy conductor Crosslinked polyetylene insulated layer 2 is wrapped, the wrapped environmental protection high fire-retardance alkali-free glass cloth braid over braid 3 outside crosslinked polyetylene insulated layer, in ring It protects high fire-retardance alkali-free glass cloth braid over braid and is externally provided with armored fireproofing layer 4；The netted fillings of high fire-retardance pp are equipped in the gap location of cable core Rope 5, wrapped glass fiber tape 6, extrudes inner sheath 7 outside glass fiber tape outside cable core, and fire-proof and thermal-insulation is externally provided in inner sheath In fire proof heat-insulation layer external galvanized layer steel-tape armouring layer 9, high fire-retardance band glue heat-shrink tube 10 is externally provided in galvanized steel strip armor for layer 8, Fire resistant coating 11 is coated outside high fire-retardance band glue heat-shrink tube.

The fire proof heat-insulation layer is made of compound glass fiber band and minerals fireproof silicon rubber composite tape layers.

The armored fireproofing layer is the chain armouring of buckle type in galvanized steel strip or stainless steel band, and buckle type is chain in steel band Sheathed structure is close, securely, can be subjected to that 1400 DEG C of high-temp combustion is non-fusible, has very strong impact resistance, and cable Flexibility, bending property it is excellent, can reach 7 times bending radius requirement.

The inner sheath be woven into after pipe by alkali-free glass fibre band be coated with organic high temperature-resistant silica gel through high-temperature process and Into, there are the performances such as fire-retardant, heat-insulated, heat preservation, anti-electricity, softness, its flexibility can be maintained in the case of subzero 54 degrees Celsius, Sustainable work in the case of 260 degrees Celsius provides reliably protecting at 550 DEG C, and anti-heat wave is resistant to≤1100 DEG C of high-temperature molten steels in short-term Impact.

The above is only the preferred implementation method of the utility model, it is noted that for the common skill of the art For art personnel, under the premise of the utility model principle is not departed from, several improvement can also be made, these improvement also should be regarded as The scope of protection of the utility model.

Claims (5)

1. a kind of high flexibility shell-less aluminum alloy conductor power cable, including cable core, it is characterised in that：The cable core is by several Insulated wire cores are twisted；Cable core gap location be equipped with the netted gasket for packings of high fire-retardance pp, the wrapped glass fiber tape outside cable core, Inner sheath is extruded outside glass fiber tape, fire proof heat-insulation layer is externally provided in inner sheath, in fire proof heat-insulation layer external galvanized layer steel-tape armouring Layer is externally provided with high fire-retardance band glue heat-shrink tube in galvanized steel strip armor, fire resistant coating is coated outside high fire-retardance band glue heat-shrink tube.

2. high flexibility shell-less aluminum alloy conductor power cable according to claim 1, it is characterised in that：The insulation Core include aluminium alloy conductor, crosslinked polyetylene insulated layer is extruded outside aluminium alloy conductor, outside crosslinked polyetylene insulated layer around The environmentally friendly high fire-retardance alkali-free glass cloth braid over braid of packet, armored fireproofing layer is externally provided in environmentally friendly high fire-retardance alkali-free glass cloth braid over braid.

3. high flexibility shell-less aluminum alloy conductor power cable according to claim 1, it is characterised in that：The fire prevention Thermal insulation layer is made of compound glass fiber band and minerals fireproof silicon rubber composite tape layers.

4. high flexibility shell-less aluminum alloy conductor power cable according to claim 2, it is characterised in that：The armouring Fireprotection layer is the chain armouring of buckle type in galvanized steel strip or stainless steel band.

5. high flexibility shell-less aluminum alloy conductor power cable according to claim 1, it is characterised in that：The interior shield Set, which is woven by alkali-free glass fibre band after pipe, to be coated with organic high temperature-resistant silica gel and is formed through high-temperature process.