CN103824620A - Safety environmental-friendly fireproof type control instrument cable - Google Patents
Safety environmental-friendly fireproof type control instrument cable Download PDFInfo
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- CN103824620A CN103824620A CN201210462906.6A CN201210462906A CN103824620A CN 103824620 A CN103824620 A CN 103824620A CN 201210462906 A CN201210462906 A CN 201210462906A CN 103824620 A CN103824620 A CN 103824620A
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- cable
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- type control
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- control instrument
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention discloses a safety environmental-friendly fireproof type control instrument cable. Insulation wire cores are formed by conductors and insulating layers. A full-packaged layer and a stainless steel sheath are arranged outside a cable core which is formed by twisting the plurality of insulation wire cores. The insulating layers and the full-packaged layer are formed by at least three layers of double-face synthetic mica tapes through wrapping. According to the needs of a user, the outermost layer of the cable can be extruded by a low-smoke halogen-free flame-retardant polyolefin oversheath. The cable can neither cause a fire hazard because of spontaneous combustion nor cause combustion because of an external fire hazard. Even under a fire hazard condition, a cable line can keep normal power operation for at least three hours. There is no smoke and no halogen gas to be released. The service life can reach more than 50 years.
Description
Technical field
The present invention relates to a kind of safety and environmental protection fire-type control instrument cable, belong to technical field of electric wires and cables.
Background technology
Current domestic fireproof cable roughly has two large classes, and a class is copper core copper sheath magnesium oxide insulating cable, and abroad referred to as MI cable, this cable has been produced at home and applied 40 years, produces in enormous quantities and uses and also have 20 years in civil buildings; The 2nd, after 2004, the inorganic mineral insulation cable of the copper core copper sheath of domestic-developed, because cable conductor has adopted stranded conductor, compared with the solid conductor of magnesium oxide insulating cable, the flexibility of cable is good, so claim again flexible fire-proof cable.Due to copper core copper sheath magnesium oxide insulating cable, manufacture length short, multicore cable cannot be produced, and in use the joint in cable line is many, constructional difficulties, and the magnesium oxide easy moisture absorption again, hidden danger is many, and price is high again, and the face of promoting is all the time narrower, and use amount is little; And copper core copper sheath flexible fire-proof cable falls into, has simplified difficulty of construction, greatly reduced transition joint though overcome cable length shortage, owing to having adopted copper sheath, cable price is still higher, and copper sheath corrosion resistant performance deficiency, in chemical industry place, using especially, antiseptic effect is poorer.
Summary of the invention
The object of the invention is to overcome the weak point of existing fireproof cable, a kind of safety and environmental protection fire-type control instrument cable with excellent electric fireproof performance and environmental-protecting performance is provided.
Technical scheme of the present invention is: a kind of safety and environmental protection fire-type control instrument cable, comprise conductor, insulating barrier and sheath, its improvements are the insulating barrier composition insulated wire cores outside described conductor and conductor, be twisted into cable core by many insulated wire cores, cable core has turnkey layer outward, turnkey layer has stainless steel sheath outward, and described insulating barrier and turnkey layer are by least three layers of wrapped forming of two-sided synthetic mica tape.
Further scheme is: described conductor is solid conductor or the stranded conductor that adopts the soft circular copper wire of electrician; Described stainless steel sheath is welded by the vertical bag of stainless steel band, and surface is for light face or have embossing; Described stainless steel sheath has one deck to be extruded the outer protecting band forming by low-smoke halide-free fireproof composite polyolefine material outward.
In the present invention, conductor adopts 1 class solid copper conductor or 2 class twisted copper conductors, and meets the regulation of GB/T3956; On conductor, with cable core at least wrapped three layers of two-sided synthetic mica tape outward, make the insulation property of cable and withstand voltage properties keep basic identical between conductor and conductor and between conductor and stainless steel sheath; The sheath of cable adopts the vertical bag of 304 stainless steel bands to be welded, and the mechanical strength of cable is higher; According to user's requirement, stainless steel sheath surface can adopt light face, also can carry out embossing processing, and embossing processing can improve the bending property of cable; According to user's needs, stainless steel sheath also can add crowded one deck low smoke halogen-free flame-retardant polyolefin oversheath outward, for height corrosion occasion, to improve cable life.Stainless steel sheath structure belongs to pioneering both at home and abroad for fire safe type control instrument cable.
Compared with the prior art, beneficial effect of the present invention is embodied in:
(1) because the sheath of this cable is that the vertical bag of stainless steel band is welded, stainless melting temperature is 1772 ℃, in the time that category-A fire-resistance property is tested---and flame temperature is that under 950 ℃～1000 ℃ conditions, cable also can not melt and burn.Insulating material adopts domestic best synthetic mica tape, the characteristics such as good insulation properties, thermal endurance and quality that synthetic mica has are pure, free from admixture, that any natural mica can not compare, substitute, the performance such as there is high electrical insulating property, antiacid caustic corrosion, elasticity, toughness and sliding, heat-resisting, thermal coefficient of expansion is little.Heatproof: 1100 ° of C, fusing point: 1375 ° of C breakdown strengths: 180 kV/mm, specific insulation: 4 x 10
13Ω .cm, surface resistivity: 3 x 10
13Ω, dielectric constant: 6 ε, dielectrical loss: 3 x 10
-4δ, pH value: 7.5-8.0.So cable itself also can not produce dieseling because of aging, overload or short circuit.Eliminated the fire disaster causing because of cable spontaneous combustion, in extraneous fire, cable neither can burn and also can not melt, and can keep cable to have the normal power-up of more than three hours long period to move, its fire-resistance property excellence.It is surprising that the fire that cable causes causes direct or indirect economic loss in China, and the present invention has thoroughly solved a difficult problem for the fire safety of cable line, is one of best fireproof cable of cost performance.
(2) because this cable has smokelessly, Halogen and the characteristic of not firing, the secondary disaster of cable under Fire Conditions also just thoroughly eliminated, and can not cause any negative effect to environmental protection, is safety and environment-friendly cable worthy of the name.
(3) this cable long service life.Due to stainless steel sheath, oversheath corrosion resistance is strong in addition, and material and the air of cable the inside are isolated again, and the ageing process of insulation and other material delays greatly, and can reach as calculated more than 50 years the useful life of cable.
(4) because the stainless steel sheath of cable has adopted vertical bag welding embossing technique, not still fire prevention, antiseptic property good (higher than copper sheath cable), water resistance might as well, can be used as submerged cable and use; Protection against rodents and termite-proof performance, can be used as protection against rodents and anti-termite cable.
(5) bending radius of this cable is little, does not also need poling, stainless steel sheath also to can be used as armour and use when mounting and installation, has saved the plastic protective jacking of armoring material and cable.
(6) in the time that cable only has stainless steel sheath; cable has and does not fire characteristic; or else the fire that the short circuit and fire hazard causing because cable material is aging, the too high fire causing of ambient temperature, artificial kindling material are caused will can occur; can not discharge smog and halogen gas at Fire Conditions yet; therefore; the present invention, concerning electric fireproof safety and environmental protection, is the revolutionary innovative technology of cable history the next item up.
Technical performance index of the present invention:
2.1 rated voltages: 450/750V and following;
2.2 cables for a long time the highest permission working temperature have: 250 ℃;
2.3 minimum bending radius are identical with common cable: be not less than 10 times of the outside diameter of cable.
2.4 conductor resistances meet 3956 regulation in the time of 20 ℃.
2.5 manufacture test voltages: control cables 2500V/5min.
2.6 insulation resistances: be not less than 1000M Ω/km 20 ℃ time.
2.7 fire resistances: cable is under the flame temperature of 950 ℃～1000 ℃, and for fiery 180min, cable does not burn, and cable surface is without burnt trace, and cable is complete, keeps 3 hours and above normal power-up.
2.8 environmental-protecting performances: smokeless, Halogen, nontoxic.
2.9 fire resistances: by category-A bunched burning test.
2.10 useful life >=50 year.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention without oversheath.
Fig. 2 is the structural representation of the present invention that has oversheath.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1: take 19 core cables as example, see Fig. 1, safety and environmental protection fire-type control instrument cable, comprise conductor 1 and wrapped insulating barrier 2 on conductor, both form insulated wire cores, by 19 stranded cable conductors that form of insulated wire cores, wrapped formation turnkey layer 3 outside cable core, the outermost layer of cable is sheath 4.
While specifically setting, conductor 1 adopts the soft circular copper wire of electrician, adopts the first solid copper conductor structure that meets GB/T3956 regulation.
Insulating barrier 2 and turnkey layer 3 all adopt two-sided synthetic mica tape to carry out that three plies are wrapped to be formed.
Sheath 4 adopts the vertical bag of 304 stainless steel bands to be welded, and carries out embossing processing.
Embodiment 2: take 19 core cables as example, see Fig. 2, this cable comprises conductor 1 and insulating barrier 2, and both form insulated wire cores, is twisted into cable conductor by 19 insulated wire cores, wrapped formation turnkey layer 3 outside cable core, more outwards have sheath 4 and oversheath 5.
While specifically setting, conductor 1 adopts the soft circular copper wire of electrician, adopts the second twisted copper conductors structure that meets GB/T3956 regulation.
Insulating barrier 2 and turnkey layer 3 all adopt two-sided synthetic mica tape to carry out that three plies are wrapped to be formed.
Sheath 4 adopts the vertical bag of 304 stainless steel bands to be welded, and carries out embossing processing.
Oversheath 5 adopts low-smoke halide-free fireproof composite polyolefine material to extrude and forms.
Claims (4)
1. a safety and environmental protection fire-type control instrument cable, comprise conductor, insulating barrier and sheath, it is characterized in that the insulating barrier composition insulated wire cores outside described conductor and conductor, be twisted into cable core by many insulated wire cores, cable core has turnkey layer outward, turnkey layer has stainless steel sheath outward, and described insulating barrier and turnkey layer are by least three layers of wrapped forming of two-sided synthetic mica tape.
2. a kind of safety and environmental protection fire-type control instrument cable according to claim 1, is characterized in that: described conductor is solid conductor or the stranded conductor that adopts the soft circular copper wire of electrician.
3. a kind of safety and environmental protection fire-type control instrument cable according to claim 1, is characterized in that: described stainless steel sheath is welded by the vertical bag of stainless steel band, and surface is for light face or have embossing.
4. a kind of safety and environmental protection fire-type control instrument cable according to claim 1, is characterized in that: described stainless steel sheath has one deck to be extruded the oversheath forming by low-smoke halide-free fireproof composite polyolefine material outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210462906.6A CN103824620A (en) | 2012-11-16 | 2012-11-16 | Safety environmental-friendly fireproof type control instrument cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210462906.6A CN103824620A (en) | 2012-11-16 | 2012-11-16 | Safety environmental-friendly fireproof type control instrument cable |
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| Publication Number | Publication Date |
|---|---|
| CN103824620A true CN103824620A (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210462906.6A Pending CN103824620A (en) | 2012-11-16 | 2012-11-16 | Safety environmental-friendly fireproof type control instrument cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810344A (en) * | 2014-12-29 | 2016-07-27 | 上海新益电力线路器材有限公司 | Enclosed armored smokeless halogen-free non-combustible power cable |
| CN111029001A (en) * | 2019-12-23 | 2020-04-17 | 昆山爱光电子有限公司 | Rat-proof fire-resistant security cable |
-
2012
- 2012-11-16 CN CN201210462906.6A patent/CN103824620A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810344A (en) * | 2014-12-29 | 2016-07-27 | 上海新益电力线路器材有限公司 | Enclosed armored smokeless halogen-free non-combustible power cable |
| CN111029001A (en) * | 2019-12-23 | 2020-04-17 | 昆山爱光电子有限公司 | Rat-proof fire-resistant security cable |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140528 |