Utility model content
The object of the utility model patent to provide a kind of fire prevention, waterproof, nontoxic, environmental protection, fail safe high, still can maintain the non-toxic and non-pollution green safety cable of energising under being suitable for specific disaster scenario---a kind of fire prevention, power saving, durable electric wire.
The technical solution of the utility model comprises some conductor wire cores, it is characterized in that arranging flame retardant coating outside described conductor wire core, arranges insulation screen, arrange filler between the gap of each conductor wire core outside flame retardant coating; Described insulation screen arranges semiconductor waterstop, inner covering outward according to this, copper wire copper strips combines screen, semiconductive blocks water buffer strip, aluminium-plastic tape, oversheath.
Described filler is glass fiber filler, also arranges a Ceramic silicon rubber insulating barrier between described conductor wire core and flame retardant coating.
Described insulation screen is that PE material is made, and by the high energy electron line of electron accelerator to insulation screen irradiation.
The beneficial effects of the utility model are:
1. improve fire prevention, safe effect, can not spread, burn and produce hydrogen halides pernicious gas, also have the shielding harness of short-circuit protection simultaneously, reach the designing requirement of environmental type safety cable.The utility model life-span is long, good and the energy saving of fire protection flame retarding effect, design principle is: use special fire proofing material and technique, special cable sheath material and production technology, increase cable life (100 years), prevent cable aging and cause energy loss, preventing the reason of fire of various factors, to reach fire prevention, power saving, durable function; , match with building life meanwhile, fill the domestic gaps;
2. have employed one deck mica tape outside conductor wire core, external application PE material polyethylene does insulating barrier, then passes through physical crosslinking; flue gas after burning is very little; do not have smoke toxicity, to human body fanout free region, its maximum characteristic is exactly when fire, high temperature; hard carbonization duricrust protective layer can be burnt till; also there is good insulating properties simultaneously, well isolated flame can be played, the effect of fire-proof insulation; thus ensure that in case of fire, electric power, communication unimpeded.
3. utilize the high energy electron line of electron accelerator to carry out irradiation to wire cable insulating layer and protective layer; the tridimensional network making the former relatively independent chain structure of plastic body become same layer to be connected, to be connected layer by layer; thus drastically increase the mechanical and physical performance of electric wire product, thermal endurance and useful life.
4. a Ceramic silicon rubber insulating barrier is also set between conductor wire core and flame retardant coating, have softness, Halogen, nontoxic, tasteless, human body, natural environment are had no adverse effects, the flue gas after burning is very little, does not have smoke toxicity, to human body fanout free region.
5. conduct electricity fibre core gap between effect that glass fiber filler also can play fire-proof insulation is set, draw materials conveniently, cost is lower.
6. outer jacket adopts environment protection type polyurethane elastomer (TPE), has and fire-retardant, soft, wear-resisting and resistance toly subdues characteristic.
A kind of fire prevention as shown in Figure 1, power saving, durable electric wire, comprise three tangent conductor wire cores 1 between two, conductor wire core outer 1 arranges a Ceramic silicon rubber insulating barrier 2, outside Ceramic silicon rubber insulating barrier 2, flame retardant coating is set, insulation screen 5 is set outside flame retardant coating, glass fiber filler 12 is set between the gap of each conductor wire core 1; Semiconductor waterstop 6, inner covering 7 are set outside described insulation screen 5 according to this, copper wire copper strips combines screen 8, semiconductive blocks water buffer strip 9, aluminium-plastic tape 10, oversheath 11.Flame retardant coating is two-layer, and internal layer is mica flame retardant coating 3, and skin is glass fiber belt 4.Conductor wire core 1 is formed by concentric type is stranded by the soft round copper wire that some diameters are identical.Copper wire copper strips combination screen is dredged by one deck copper wire and is formed around outer one deck copper strips is wrapped.Oversheath 11 is ceramic halogen-free flameproof fireprotection layer or environment protection type polyurethane elastomer material.
The technical scheme of the utility model patent has been come like this: cable combines block water buffer strip 9, plastic-aluminum combined mask tape 10, ceramic halogen-free flameproof fireprotection layer 11 of screen 8, semiconductive by conductor wire core 1, Ceramic silicon rubber insulating barrier 2, mica flame retardant coating 3, glass fiber belt 4, insulation screen 5, semiconductor waterstop 6, inner covering 7, copper wire copper strips and jointly forms.The conductor wire core 1 of cable is the stranded conductor of system of being twisted by concentric layers formula by many soft single round copper wire.
The overlapping wrapped outside at insulation screen 5 of semiconductor waterstop 6, low smoke and zero halogen inner covering 7 is extruded in outside.Copper wire copper strips combination screen 8 dredges outside around inner covering 7 by many soft round copper wires, more oppositely a wrapped copper strips has been tightened, and the wrapped outside at copper wire copper strips combination screen 8 of semi-conductive buffer water-blocking band 9, plays buffering resistance effect.Or the vertical outside that wrap in semi-conductive buffer water-blocking band 9 wrapped with plastic-aluminum combined mask tape 10 again, outermost extrudes one deck ceramic halogen-free flameproof fireprotection layer again and makes protective layer, and this is a kind of novel ceramic halogen-free flameproof fireproof.Meet fire and can form hard housing rapidly, the similar effect playing fire compartment wall, has good heat insulation effect, protects the object by burning not to be damaged.
The sectional area of the conductor wire core 1 of the utility model patent is 1.5 ~ 70mm
2, geometry is round, is well-regulated by the soft round copper wire that some diameters are identical, concentric type, and successive layers time is according to different directions strand system.Insulated wire cores can be single core, and can be also three cores, four-core, geometry be fixed, and stability is high, on cable can curvature impact very little.
The flame retardant coating 2 of the utility model patent forms with the high-quality Mica tape that fire safety cable is special, has excellent fire resistant flame retardant effect, and still can keep good dielectric strength under ignition temperature.Insulation screen 5 adopts PYJBJ to make, not only high temperature resistant and have and do not prolong combustion and can not produce the feature of hydrogen halide.Such cable just can not discharge pernicious gas and smog when burning, and unlikelyly causes " secondary disaster ".
The copper wire copper strips combination screen 8 of the utility model patent is by one deck copper wire, the wrapped composition of one deck copper strips, and screen cross section and master core cross section configure according to a certain percentage, by 16,25,35,50...... plurality of specifications.The shielded type cable of this structure can anti-electromagnetic induction, and imperfect earth and power line conducted interference, reduce inductance, the feature such as prevent induced electromotive force excessive.Screen had both played the effect suppressing electromagnetic wave externally to be launched, and can be used as again the passage of short circuit current, can play the protective effect of neutral core.
The double effects that the semiconductor waterstop 6 of the utility model patent has semiconductive, blocks water, outer overlapping wrapped at insulation shield layer 5, as waterproof construction.Select the waterstop of 0.5 millimeters thick, when it is met after water, can the height of undergoes rapid expansion to tens millimeter, thus reach good block-water effect.There is semiconductive, cushion, the semi-conductive buffer water-blocking band 9 of the triple function that blocks water, overlapping wrapped outside copper wire copper strips combination screen 8, there is the same principle that blocks water, also have the effect of buffering.After this band water-swellable, that copper wire copper strips combination screen can be blocked up is watertight.Effectively prevent the intrusion of moisture, moisture.
The utility model patent adopts aluminium-plastic tape composite sheath, not only serves the effect of electromagnetic shielding but also serve radial moistureproof effect.
The utility model patent uses ceramic halogen-free flameproof fireproof, adopts fire-resisting ceramic silicone rubber insulating material, nonpoisonous and tasteless at normal temperatures, has good flexibility and elasticity, and good processability.Under high temperature more than 500 DEG C and flame ablation, organic principle ablatedly in a short period of time can change into hard ceramic-like material, form the isolation layer that one deck is good, stop burning away of flame, and the ablation time is longer, temperature is higher, and hard effect is more obvious, can reach the fire-resistant environment of 1200 ~ 1500 DEG C.Remained without any ashes by after burning simultaneously.Really serve the object of good fire-fighting, fireproofing function and safety and environmental protection.
Be illustrated in figure 2 the another kind of scheme of the present invention, itself and the technical scheme of Fig. 1 are distinguished and are that conductor wire core 1 arranges a fire-resistant isinglass belt 3 outward, arrange the insulation screen 5 made of PE material polyethylene outside insulating barrier mica tape 3.The conductor wire core 1 of cable twists by single or many soft single round copper wire the stranded conductor made by concentric layers formula.PE material polyethylene does insulating barrier, and this is a kind of novel PE halogen-free flameproof fireproof.Meet fire and can form hard carbonization housing rapidly, forming the function of similar fire compartment wall, there is good heat insulation effect, protecting the object by burning not to be damaged.
The high energy electron line of electron accelerator is utilized to carry out irradiation to wire cable insulating layer and protective layer; the insulating barrier of cable is made to become 3 D stereo network structure from linear molecular structure; define the three-dimensional lattice being less than hydrone; at polyethylene surface and inner formation compacted zone; thus effectively prevent the combination of hydroxide and hydrone; this crosslinking method not only increases the heatproof of electric wire, wear-resisting and fire resistance, more importantly serves resistance effect.This crosslinking method, without high temperature, anhydrous, can make polyethylene crosslinking, can improve the fire-retardant of cable and electric property again.Cable is made to have low cigarette, Halogen, the feature such as fire-retardant, fire-resistant and high temperature resistant.Specific performance is as follows: temperature resistant grade is high: conductor allows working temperature to be 135 DEG C (common cable is 70 DEG C or 90 DEG C) for a long time; Fire resistance is good: bunched burning test is category-A.(common cable is C class); Smokeless poison gas, light transmittance >=90%, pH value >=6.0 (common low-smoke halogen-free cable light transmittance >=60%, pH value >=4.3); Mechanical performance is excellent.Abrasion resistance reaches 160,000 times, and useful life was more than 50 years.
The utility model advantage: 105 degree can be reached by the crosslinked polyethylene heat resistance after irradiation, cross-linking radiation is physical crosslinking mode, the whole crosslinked intervention not having water, hydrone content in its insulation is not more than 100PPM, insulation purity is high, thus cross-linking radiation cable is at electrical property, mechanical properties has unique good characteristic, and cable life can reach more than 60 years.Cable has lightweight simultaneously, and structure is simple, lays not by features such as drop restrictions.