CN203260359U - Fireproof cable - Google Patents
Fireproof cable Download PDFInfo
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- CN203260359U CN203260359U CN 201320289240 CN201320289240U CN203260359U CN 203260359 U CN203260359 U CN 203260359U CN 201320289240 CN201320289240 CN 201320289240 CN 201320289240 U CN201320289240 U CN 201320289240U CN 203260359 U CN203260359 U CN 203260359U
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- fireproof cable
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Abstract
The utility model discloses a fireproof cable, belongs to the field of a cable, belongs to one metal sheath inorganic mineral-insulated cable and is particularly suitable for laying the fireproof cable with the specification of less than or equal to 750V. The fireproof cable comprises conductor cores, an insulating layer, an inner sheath and a metal sheath; at least one conductor core is provided; the insulating layer is coated outside the conductor cores; the inner sheath is coated outside the insulating layer; and the metal sheath is arranged outside the inner sheath. The fireproof cable has excellent fireproof, waterproof and moisture-proof performances, and has the advantages of being safe, reliable, and environment friendly; in addition, the fireproof cable further has the advantages of simple forming process and easiness for laying, and solves the detect that the inorganic mineral insulating layer easily absorbs moisture, protects the line well, thereby the unimpeded line is secured in the case of a fire disaster.
Description
Technical field
But the utility model discloses a kind of fireproof cable of band ceramic sheath, belong to field of cables, belong to a kind of of metal sheath inorganic mineral insulation cable, be particularly useful for 750V and following fireproof cable lays.
Background technology
Along with the development of power industry, people more and more pay attention to power system security, and the safety and reliability of electric wire when the ignition had higher requirement.Traditional power cable adopt organic insulating material as: plastics, rubber etc. as insulation protect, cover material, when circuit caught fire, plastics or rubber blazed up soon, and produced a large amount of smog and other harmful substances, and human body is caused great harm.Common fire-retardant and low-smoke halogen-free inflaming-retarding cable occurred afterwards, though these cables are nonflammable, and smog obviously reduces when ignition, and the release of harmful substance also is improved, but the electric wire circuit just can't be worked behind ignition.Insulate with metal oxides such as magnesia powders, though being the cable of sheath, metal tube improved above-mentioned shortcoming, but because manufacture method is complicated, technological process is long, device requirement is much more total and automaticity is low and product length is limited, and mounting and installation difficulty and transition joint are many and cost is high-leveled and difficult to be greatly developed.The embossing copper sheath Mica tape inorganic mineral insulation flexible fire-proof cable that has so excellent fire line and good process arises at the historic moment.
Embossing copper sheath Mica tape insulation flexible fireproof cable has that ampacity is large, anti-interference good, fire protecting performance is excellent, and safe, reliable, environmentally friendly and moulding process is simple, be easy to install, lay, and the relative magnesia powder metal oxide of production cost insulated cable is wanted the characteristics of more economical practicality thereby received the market favor greatly.
Can be along with a large amount of popularization and the uses of embossing copper sheath Mica tape flexible fire-proof cable, new problem also comes one after another.At first be that this cable copper sheath is the line moulding of rerolling after the argon arc welding welding, owing to moulding process and operational reason, more or less solder skip point or crack always occur, although manufacturer has generally all in time carried out repair welding, also miss unavoidably some tiny solder skip point or micro-cracks.The insulation mica tape at these solder skip points and slit place directly and just greatly reduce the dielectric strength of cable after the contact with air moisture absorption causes hidden danger of quality; Secondly, because the base material of mica tape is glass fibre, after wrapped, behind the insulated wire cores surface, stay a little glass fiber flying chip, if these flying chips are not processed, will affect the copper pipe welding, form the solder skip point, affect product quality;
In addition, because the copper material price is higher, so the cost of embossing copper sheath flexible fire-proof cable is also relatively high.
For addressing the above problem, my company on the basis of common flexible fire-proof cable, but developed a kind of flexible fire-proof cable that between cable core and metallic sheath, increases the ceramic sheath.But behind the ceramic overcoat that increases newly, not only outside the Mica tape insulated wire cores, formed have fire prevention, solder skip point that the protective layer of fire-resistant and waterproof, moisture-proof role but also just stopped forms because of the glass flying chip.In addition, because the copper material price is higher, the cost of embossing copper sheath flexible fire-proof cable is also relatively high, for reducing cost, can change oversheath into stainless steel sheath according to user's request.
Summary of the invention
The utility model provides that a kind of ampacity is large, anti-interference good, fire prevention, fire-resistant and waterproof, humidity resistance are excellent, and safe, reliable, environmentally friendly; In addition, this cable also has the simple convenient operation of moulding process; Pliability is easy to lay well; And low production cost, economical and practical characteristics.
For realizing above-mentioned technical purpose, the technical solution of the utility model is as follows:
A kind of fireproof cable comprises conductor thread core, insulating barrier sheath and metallic sheath, it is characterized in that: described conductor thread core is at least 1 core; Described insulating barrier is coated on the conductor thread core outside, and described sheath is coated on the insulating barrier outside; Metallic sheath is arranged on the sheath outside.
Conductor thread core described in the utility model is the copper core.
The cross section of conductor thread core described in the utility model is circular, semicircle, fan-shaped or watt shape.
Insulating barrier described in the utility model forms for anti-at least 1300 ℃ Mica tape.
But sheath described in the utility model is ceramic fire prevention, fire-resistant composite band.
Metallic sheath described in the utility model is embossing copper pipe or embossing stainless steel tube.
The ceramic fireproof＝fire-proof composite band that the utility model relates to has following features: one, can be by Low fire ceramic shape armouring under 350-3000 ℃ of flame or nonflame condition, and the crust performance is good, the fireproof＝fire-proof excellent performance; Two, density 1.45-1.50g/cm3, be lower than mica tape 25%, intensity is high, mechanical performance is good, electrical insulation capability is excellent (two-sided mica tape actual density 1.8---2.2g/cm3, about intensity 130MPa, three, product price (about 50000 yuan/tons of mica tape prices, about 20000 yuan/tons of ceramic fireproof＝fire-proof composite band prices), processing technology is simple to operation, not only can be wrapped, can indulge bag is the characteristics of its maximum, but the cost decrease; Four, the own good springiness of material, vertical bag and wrapped compactness and sealing property excellence; Five, fire resistance is excellent, does not come off after the burning; Electrical property under the high temperature, when thick 50% overlapping of 0.17mm was wrapped, insulation resistance was greater than 1M Ω, puncture voltage is greater than 2000V), waterproof, nonhygroscopic; Six, the fireproof electric wire cable of ceramic fireproof＝fire-proof composite band production, fire resistance rating can reach the A grade standard of GB12666.6, the 90min that namely in 950 ℃ of-1000 ℃ of flames, burns, the 3A fuse does not fuse.Performance index: density 1.45-1.50g/cm3, hot strength 〉=3.5MPa, specific insulation 〉=1015 Ω .cm, breakdown strength 〉=30KV/mm, high-temperature behavior test data: density: 1.43g/cm3. intensity: 8.5MPa.; The high-temperature test data, condition: 800 ℃, 90min. thickness: 0.2mm band 50% is overlapping wrapped.Puncture voltage: 500V. insulation resistance: 0.5M Ω.
Because the utility model has adopted technique scheme, therefore, has following advantages:
At first, but the utility model has increased one deck ceramic fireproof＝fire-proof composite band between mica tape insulated wire cores and metallic sheath.Because but ceramic fireproof＝fire-proof silicon rubber and the calendering of high temperature resistant alkali-free glass fiber cloth are composited; nonhygroscopic; waterproof; anti-vibration; spray, crust property is excellent, and crust is fast; without the crack; at 350 degree and above flame or begin hardening without under the flame condition, reach as high as 3000 degree, along with temperature raises; rapidly by the hard complete housing of Low fire ceramic shape; the burning flame time is longer, and temperature is higher, and is harder; hard housing armouring after the burning plays a very good protection to circuit, ensures unimpeded in the situation of fire of circuit.
Secondly, but newly-increased ceramic overcoat, not only moulding process is easy---form with mica tape is wrapped; And can protect anti-, the damp waterproof of mica tape insulated wire cores, and avoid the solder skip point that forms because of the mica tape flying chip, improve the quality of products.
Three, cable insulation adopts the Mica tape of anti-at least 1300 ℃ of high temperature to form, and has played well fire prevention, heat insulation effect;
The 4th, the metallic sheath of cable all adopts embossing copper pipe or embossing stainless steel tube, has guaranteed the pliability of cable; Its bending radius≤20D (D is the outside diameter of cable), convenient transportation and installation; Made things convenient for and laid, and in crooked, transportation frangibility not;
The 5th, copper sheath can bear 1083 ℃ of high temperature; Stainless steel sheath can bear 1440 ℃ of high temperature, has guaranteed in fire integrality can firm protection insulating barrier not loose, the circuit that is not burned, keeps switching on;
The 6th, owing to adopt mechanization to produce continuously, its length can satisfy distribution length needs, need not transition joint, greatly reduces contact impedance and contact fault.The cross section can reach 300mm simultaneously
2, satisfy the occasion of different needs for electricity;
The 7th, owing to adopt copper conductor to make conductor wire core, and the construction of cable is special, therefore, utilizes the satisfactory electrical conductivity of copper, and this cable not only ampacity is large, and has larger overload capacity; Fireproof cable long-term work temperature can reach 250 ℃ during overload;
The 8th, fireproof cable adopts copper or stainless steel to make sheath, and radiating surface is large, and intensity is high, and corrosion resistance is better;
The 9th, the cables such as this cable and signal cable, control under the shielding of metallic sheath (copper or stainless steel), can not produce other cables and disturb when same hoistway lays;
The tenth, fireproof cable can be in flame normal power supply, start fire-extinguishing apparatus, reduce fire damage; Also reliable especially to personal safety in addition, its metallic sheath is excellence conductor, is that best earth connection PE(copper sheath is particularly safe and reliable), and arrive continuously the cable total length, greatly improved ground protection sensitivity and reliability.
The 11, insulating material adopts mica material, and is therefore high temperature resistant, and is difficult for aging.Its life-span, in normal operation, its life-span can be equal to building than much higher times of other insulated cable.
The 12, the utility model fireproof cable adopts the mica material insulation, but the ceramic fireprotection layer is made overcoat copper or stainless steel as sheath, and the product overall economic efficiency is good, and especially stainless steel embossing product economy benefit is particularly outstanding.
The 13, cable burns in flame, and is smokelessly nontoxic, do not fire body owing to the whole cable material is, and
Without packing material, can not produce combustion-supportingly, the cable after discarded is also nontoxic, and the equal recyclable recycling of copper conductor and metallic sheath, simultaneously, can also tolerate water spray and mechanical impact in burning, keeps the complete of circuit.
The fire resistance rating of the utility model cable not only satisfies 950 ℃ of GB GB/T 12666.6A classes, and 90min also can satisfy the 650 ℃ of 3h of A level that stipulate among the Britain BS6387-1994; 750 ℃ of 3h of B level; 950 ℃ of 3h requirements of C level.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of embodiment 3;
Fig. 3 is the structural representation of embodiment 4;
Fig. 4 is the structural representation of embodiment 5;
Fig. 5 is the structural representation of embodiment 6;
Fig. 6 is the structural representation of embodiment 7;
Fig. 7 is the structural representation of embodiment 9.
Among the figure: 1, conductor thread core, 2, insulating barrier, 3, sheath, 4, embossing metallic sheath.
Embodiment
A kind of fireproof cable comprises conductor thread core, insulating barrier sheath and metallic sheath, and described conductor thread core is 1 core; Described insulating barrier is coated on the conductor thread core outside, and described sheath is coated on the insulating barrier outside; Metallic sheath is arranged on the sheath outside.Described conductor thread core is the copper core, and described metallic sheath is copper sheath.
A kind of fireproof cable comprises conductor thread core, insulating barrier sheath and metallic sheath, and described conductor thread core is 1 core; Described insulating barrier is coated on the conductor thread core outside, and described sheath is coated on the insulating barrier outside; Metallic sheath is arranged on the sheath outside.Described conductor thread core is the copper core, and described metallic sheath is stainless steel sheath.
Embodiment 3
A kind of fireproof cable comprises conductor thread core, insulating barrier sheath and metallic sheath, and described conductor thread core is 2 cores; Described insulating barrier is coated on the conductor thread core outside, and described sheath is coated on the insulating barrier outside; Metallic sheath is arranged on the sheath outside.Described conductor thread core is the copper core.The cross section of described conductor thread core is circular.Described metallic sheath is copper sheath.
A kind of fireproof cable comprises conductor thread core, insulating barrier sheath and metallic sheath, and described conductor thread core is 2 cores; Described insulating barrier is coated on the conductor thread core outside, and described sheath is coated on the insulating barrier outside; Metallic sheath is arranged on the sheath outside.Described conductor thread core is the copper core.The cross section of described conductor thread core is semicircle.Described metallic sheath is copper sheath.
Embodiment 5
A kind of fireproof cable comprises conductor thread core, insulating barrier sheath and metallic sheath, and described conductor thread core is 3 cores; Described insulating barrier is coated on the conductor thread core outside, and described sheath is coated on the insulating barrier outside; Metallic sheath is arranged on the sheath outside.Described conductor thread core is the copper core.The cross section of described conductor thread core is fan-shaped.Described metallic sheath is copper sheath.
Embodiment 6
A kind of fireproof cable comprises conductor thread core, insulating barrier sheath and metallic sheath, and described conductor thread core is 4 cores; Described insulating barrier is coated on the conductor thread core outside, and described sheath is coated on the insulating barrier outside; Metallic sheath is arranged on the sheath outside.Described conductor thread core is the copper core.The cross section of described conductor thread core is fan-shaped.Described insulating barrier forms for anti-at least 1300 ℃ Mica tape.Described metallic sheath is copper sheath.
A kind of fireproof cable comprises conductor thread core, insulating barrier sheath and metallic sheath, and described conductor thread core is 5 cores; Described insulating barrier is coated on the conductor thread core outside, and described sheath is coated on the insulating barrier outside; Metallic sheath is arranged on the sheath outside.Described conductor thread core is the copper core.The cross section of conductor thread core is a watt shape.Described insulating barrier forms for anti-at least 1300 ℃ Mica tape.But described sheath is ceramic fire prevention, fire-resistant composite band.Described metallic sheath is copper sheath.
A kind of fireproof cable comprises conductor thread core, insulating barrier sheath and metallic sheath, and described conductor thread core is 5 cores; Described insulating barrier is coated on the conductor thread core outside, and described sheath is coated on the insulating barrier outside; Metallic sheath is arranged on the sheath outside.Described conductor thread core is the copper core.The cross section of conductor thread core is a watt shape.Described insulating barrier forms for anti-at least 1300 ℃ Mica tape.But described sheath is ceramic fire prevention, fire-resistant composite band.Described metallic sheath is the embossing copper pipe.
Embodiment 9
A kind of fireproof cable comprises conductor thread core, insulating barrier sheath and metallic sheath, and described conductor thread core is 5 cores; Described insulating barrier is coated on the conductor thread core outside, and described sheath is coated on the insulating barrier outside; Metallic sheath is arranged on the sheath outside.Described conductor thread core is the copper core.The cross section of described conductor thread core is circular.Described insulating barrier forms for anti-at least 1300 ℃ Mica tape.But described sheath is ceramic fire prevention, fire-resistant composite band.Described metallic sheath is the embossing stainless steel tube.
Claims (6)
1. a fireproof cable comprises conductor thread core (1), insulating barrier (2) sheath (3) and metallic sheath (4), and it is characterized in that: described conductor thread core (1) is at least 1 core; Described insulating barrier (2) is coated on conductor thread core (1) outside, and described sheath (3) is coated on insulating barrier (2) outside; Metallic sheath (4) is arranged on sheath (3) outside.
2. a kind of fireproof cable according to claim 1, it is characterized in that: described conductor thread core (1) is the copper core.
3. a kind of fireproof cable according to claim 1 and 2 is characterized in that: the cross section of described conductor thread core (1) is circular, semicircle, fan-shaped or watt shape.
4. a kind of fireproof cable according to claim 3, it is characterized in that: described insulating barrier (2) forms for anti-at least 1300 ℃ Mica tape.
5. a kind of fireproof cable according to claim 4 is characterized in that: described sheath (3) but be ceramic fire prevention, fire-resistant composite band.
6. a kind of fireproof cable according to claim 5, it is characterized in that: described metallic sheath (4) is embossing copper pipe or embossing stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289240 CN203260359U (en) | 2013-05-24 | 2013-05-24 | Fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289240 CN203260359U (en) | 2013-05-24 | 2013-05-24 | Fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203260359U true CN203260359U (en) | 2013-10-30 |
Family
ID=49472905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320289240 Expired - Lifetime CN203260359U (en) | 2013-05-24 | 2013-05-24 | Fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203260359U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632614A (en) * | 2016-03-27 | 2016-06-01 | 张庆 | Special steel armored signal wire for oil wells |
-
2013
- 2013-05-24 CN CN 201320289240 patent/CN203260359U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632614A (en) * | 2016-03-27 | 2016-06-01 | 张庆 | Special steel armored signal wire for oil wells |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |