CN201796641U

CN201796641U - Soft mineral insulated cable

Info

Publication number: CN201796641U
Application number: CN2010202512586U
Authority: CN
Inventors: 金伟龙; 赵飞
Original assignee: SHANDONG SOCO CABLE GROUP CO Ltd
Current assignee: SHANDONG SOCO CABLE GROUP CO Ltd
Priority date: 2010-07-07
Filing date: 2010-07-07
Publication date: 2011-04-13
Anticipated expiration: 2020-07-07

Abstract

The utility model relates to a soft mineral insulated cable. The soft mineral insulated cable comprises conductive wire cores, high-grade fire-proof mica tape insulating layers, alkali-free glass fiber fillers, an alkali-free glass fiber belting, an embossed copper sheath and an anti-corrosive polyvinyl chloride outer sheath, and is characterized in that the outer sides of the conductive wire cores are wrapped by the high-grade fire-proof mica tape insulating layers, the fillers are filled between the high-grade fire-proof mica tape insulating layers and the conductive wire cores, the outer sides of the high-grade fire-proof mica tape insulating layers are wrapped by the alkali-free glass fiber belting, the outer side of the alkali-free glass fiber belting is wrapped by the embossed copper sheath, and the embossed copper sheath is wrapped by the anti-corrosive polyvinyl chloride outer sheath. The soft mineral insulated cable has the advantages of steady electrical insulating property, fire prevention, excellent fire resistance, humidity resistance, high temperature resistance, good mechanical property, high decay resistance, high overloading ability, good softness and favorable environment-friendly performance, is free from radiation, eddy current, smoke and toxicity, and can be used for mobile occasions.

Description

Soft level mineral insulated cable

Technical field

The utility model relates to a kind of soft level fireproof cable, particularly soft level mineral insulated cable.

Background technology

Fire safety has become a kind of important leverage measure that ensures the national economy fast development, pre-electrical fire prevention has become the most important thing, realize this High-Interest Object, mineral insulated cable becomes unique first-selection, and the length of these project research and development does not have the just in time satisfactory fatal shortcoming length weak point that has overcome traditional drawing process production fireproof cable of the mineral insulated cable of transition joint, must do lengthening joint at the scene of laying and produce possible accident potential, so the soft level of the length mineral insulated cable of this project development there are the good promotion prospect and the market competitiveness.This copper with high conductivity is made conductor, and the quality refractory mica tape insulate, and seamless copper pipe is made sheath, and the cable that adopts special process to be made is mainly used in the cable of modern architecture wiring cable and special industry (metallurgy, chemical industry, oil etc.) usefulness.Because the particularity of material and structure, the fire prevention of this product, performance high temperature resistant and electric, mechanical, the environmental protection aspect all are that organic cable (plastic cable) is incomparable.Mineral insulated cable is obtaining increasingly extensive application because of its superior cost performance, and market prospects are good, the added value of product height.

Summary of the invention

The purpose of this utility model is to solve the existing the problems referred to above of fireproof cable of the prior art, and a kind of soft level mineral insulated cable is provided.A kind of soft level mineral insulated cable of the utility model design, comprise conductor wire core, quality refractory mica tape insulating barrier, the alkali-free glass wool filler, the alkali-free glass wool band, the embossing copper sheath, anticorrosion polyvinyl chloride oversheath, it is characterized in that: coat quality refractory mica tape insulating barrier in the outside of conductor wire core, fill the alkali-free glass wool filler between quality refractory mica tape insulating barrier and the conductor wire core, the outside at quality refractory mica tape insulating barrier coats the alkali-free glass wool band, the outside of alkali-free glass wool band coats the embossing copper sheath, and the embossing copper sheath is coated with anticorrosion polyvinyl chloride oversheath.The number of described conductor wire core is one or more.Conductor wire core is made up of the twisted wire of several layers, and every layer of twisted wire forms with the conductor of uiform section is stranded by some strands, and per share conductor is made up of some conductor monofilament, layer with layer between direction of lay opposite.The cross section of conductor wire cable core is circular.It is material that quality refractory mica tape insulating barrier adopts fire resistance and the superior mica band of insulation property.Alkali-free glass wool filler, alkali-free glass wool band all adopt environment-friendly materials.Described anticorrosion polyvinyl chloride oversheath is the fire retardant, anticorrosive PVC sheath material.Every conductor monofilament of conductor wire core is a circular copper wire.Described circular copper wire is mainly naked round annealed copper wire or overlay coating is the single round copper wire of tin.The utility model has the advantages that electrical insulation properties is stable, fire prevention, fire-resistant, anti-high damp-warm syndrome, good mechanical property, convenience, decay resistance height, excellent fire resistance, radiationless, no eddy current are laid in installation, overload capacity is strong, flexibility good, smokeless, nontoxic, can be used for mobile occasion, soft grade mineral insulated cable that environmental-protecting performance is good.

Description of drawings

Accompanying drawing is the section of structure when having three cable inner cores of the present utility model.

Embodiment

Comprise among the figure by conductor wire core 1, quality refractory mica tape insulating barrier 2, alkali-free glass wool filler 3, alkali-free glass wool band 4, embossing copper sheath 5, anticorrosion polyvinyl chloride oversheath 6 is formed, it is characterized in that: coat quality refractory mica tape insulating barrier 2 in the outside of conductor wire core 1, fill alkali-free glass wool filler 3 between quality refractory mica tape insulating barrier 2 and the conductor wire core 1, the outside at quality refractory mica tape insulating barrier 2 coats the alkali-free glass wool band, the outside of alkali-free glass wool band 4 coats the embossing copper sheath, and embossing copper sheath 5 is coated with anticorrosion polyvinyl chloride oversheath 6.The number of described conductor wire core 1 is one or more.Conductor wire core 1 is made up of the twisted wire of several layers, and every layer of twisted wire forms with the conductor of uiform section is stranded by some strands, and per share conductor is made up of some conductor monofilament, layer with layer between direction of lay opposite.The cross section of conductor wire core 1 is circular.It is material that quality refractory mica tape insulating barrier 2 adopts fire resistance and the superior mica band of insulation property.Alkali-free glass wool filler 3, alkali-free glass wool band 4 all adopt environment-friendly materials.Described anticorrosion polyvinyl chloride oversheath 6 is the fire retardant, anticorrosive PVC sheath material.Every conductor monofilament of conductor wire core 1 is a circular copper wire.Described circular copper wire is mainly naked round annealed copper wire or overlay coating is the single round copper wire of tin.Cable inner core in the cable outer layer can have two stranded forming of above insulated wire cores, also can there be three, four, five or more insulated wire cores are stranded makes, geometry by a plurality of one-tenth cable cores that constitute with the uiform section conductor wire core is circular, geometry is fixed, stability is high, but very little to the curvature influence of cable.Conductor wire core of the present utility model can have several layers, every layer of conductor that has some with uiform section, and per share have some conductor monofilament, twists to opposite between layer and the layer.Single round copper wire surface do not have wrinkle, crackle, burr, field trash and other is to using harmful defective.Single line allows welding, but the distance between adjacent two solder joints should be not less than 300mm, and welding is wanted firmly, and the smoothing cavetto is wanted in the joint.The stranded core of various processes does not allow whole root bead to connect.Insulating barrier is repeated wrappedly to constitute by quality refractory mica tape insulating barrier multilayer, improved the electric property of product greatly, physical property, mechanical performance, ageing resistace and adaptive capacity to environment and other properties, not only high temperature resistant and have the characteristics of not prolonging the combustion and can not produce the very strong hydrogen halide of corrosivity, unlikely causing " secondary disaster ", safe, environment friendly and pollution-free, can be suitable for various specific occasions and lay, prolong product useful life.In becoming the cable core gap, fill the alkali-free glass wool filler, have high temperature resistant, flame resistant, not Halogen, nonflammable characteristics such as be fuming.The positive and negative two-layer alkali-free glass wool band of tight outside more wrapped bundle, the rate of putting up is not less than 45%, isolated insulation layer and outer jacket are in case mutual bonding and influence the machinery, physics, electrical property etc. of cable between them can also strengthen the tension and the anti-flexural loading degree of cable.This kind alkali-free glass wool band and alkali-free glass wool filler adopt aluminium borosilicate glass to take out system fibrage and form, and its alkaline metal cpds is not more than 0.5%, directly makes band shape behind the finished product.Limit with lock, non-frangibility, performance softness, wrapped smooth, stretching resistance extra-heavy.Band can not burn below 900 ℃ in temperature after meeting naked light, can stop flame to pass, and the protection insulating barrier is not burnt out, and the smog that is discharged during burning is few, reduces fire evil degree greatly.When cable runs into burning; alkali-free glass wool band and alkali-free glass wool filler can attract a large amount of heats; and the shell isolated air of formation carbon; hinder the supply of oxygen and flowing of fuel gas; the protection insulating barrier is avoided burning; prevent that cable from further burning, make the loss of fire be unlikely further extension.Copper sheath should adopt TU level oxygen-free copper stripe or the T2 level copper strips material that is not less than the GB/T5231 regulation, and adopts argon arc welding that commissure is welded, and weld intensity should be not less than 80% of mother metal.Welding guarantees not damage the mica band, and wrinkle, crackle, burr, field trash can not be arranged on the weld surface and other is to using harmful defective.Anticorrosion polyvinyl chloride oversheath 6 temperature can reach 105 ℃, and the working temperature that fireproof cable allows during overload can reach 250 ℃.

Claims

1. soft level mineral insulated cable, comprise conductor wire core, quality refractory mica tape insulating barrier, the alkali-free glass wool filler, the alkali-free glass wool band, the embossing copper sheath, anticorrosion polyvinyl chloride oversheath, it is characterized in that: coat quality refractory mica tape insulating barrier in the outside of conductor wire core, fill the alkali-free glass wool filler between quality refractory mica tape insulating barrier and the conductor wire core, the outside at quality refractory mica tape insulating barrier coats the alkali-free glass wool band, the outside of alkali-free glass wool band coats the embossing copper sheath, and the embossing copper sheath is coated with anticorrosion polyvinyl chloride oversheath.

2. soft level mineral insulated cable according to claim 1, it is characterized in that: the number of described conductor wire core is one or more.

3. soft level mineral insulated cable according to claim 1, it is characterized in that: conductor wire core is made up of the twisted wire of several layers, every layer of twisted wire forms with the conductor of uiform section is stranded by some strands, and per share conductor is made up of some conductor monofilament, layer with layer between direction of lay opposite.

4. soft level mineral insulated cable according to claim 1, it is characterized in that: the cross section of conductor wire core is circular.

5. soft level mineral insulated cable according to claim 1, it is characterized in that: it is material that quality refractory mica tape insulating barrier adopts fire resistance and the superior mica band of insulation property.

6. soft level mineral insulated cable according to claim 1, it is characterized in that: alkali-free glass wool filler, alkali-free glass wool band all adopt environment-friendly materials.

7. soft level mineral insulated cable according to claim 1, it is characterized in that: described anticorrosion polyvinyl chloride oversheath is the fire retardant, anticorrosive PVC sheath material.

8. soft level mineral insulated cable according to claim 3, it is characterized in that: the conductor monofilament in the conductor wire core is a circular copper wire.

9. soft level mineral insulated cable according to claim 8, it is characterized in that: described circular copper wire is that naked round annealed copper wire or overlay coating are the single round copper wire of tin.