CN202976911U - Safe environmental-protection fire-proof type control instrument cable - Google Patents
Safe environmental-protection fire-proof type control instrument cable Download PDFInfo
- Publication number
- CN202976911U CN202976911U CN2012206065970U CN201220606597U CN202976911U CN 202976911 U CN202976911 U CN 202976911U CN 2012206065970 U CN2012206065970 U CN 2012206065970U CN 201220606597 U CN201220606597 U CN 201220606597U CN 202976911 U CN202976911 U CN 202976911U
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- cable
- conductor
- type control
- control instrument
- stainless steel
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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 utility model discloses a safe environmental-protection fire-proof type control instrument cable. An insulation wire core is formed by a conductor and an insulating layer. An integrated contracting layer and a stainless steel sheath are arranged on an outer side of a cable core which is formed by the plurality of insulation wire cores through intertwisting. The insulating layer and the integrated contracting layer are formed by at least three layers of double-face synthetic mica tape through wrapping. According to a user need, an outermost layer of the cable can be extruded with a low-smoke halogen-free flame-retardant polyolefin oversheath. The cable can not cause a fire hazard because of spontaneous combustion and can not cause combustion because of the external fire hazard. Even under the 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. A service life can reach more than 50 years.
Description
Technical field
The utility model relates to a kind of safety and environmental protection fire-type control instrument cable, belongs to technical field of electric wires and cables.
Background technology
Present 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 the MI cable, this cable has been produced at home and used 40 years, and producing in enormous quantities and using in civil buildings also has 20 years; 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, is compared with the solid conductor of magnesium oxide insulating cable, and 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 can't 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 all the time is 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 the cable length shortage, owing to having adopted copper sheath, the cable price is still higher, and the copper sheath corrosion resistant performance is not enough, uses in the chemical industry place especially, and antiseptic effect is poorer.
The utility model content
The purpose of this utility model is to overcome the weak point of existing fireproof cable, and a kind of have excellent electric fireproof performance and the safety and environmental protection fire-type control instrument cable of environmental-protecting performance are provided.
The technical solution of the utility model is: a kind of safety and environmental protection fire-type control instrument cable, comprise conductor, insulating barrier and sheath, its improvements are that the outer insulating barrier of described conductor and conductor forms insulated wire cores, be twisted into cable core by many eradications edge core, cable core has the turnkey layer outward, the turnkey layer has stainless steel sheath outward, and described insulating barrier and turnkey layer are by at least three layers of wrapped forming of two-sided synthetic mica tape.
Further scheme is: described conductor is for adopting solid conductor or the stranded conductor of the soft circular copper wire of electrician; Described stainless steel sheath is welded by the vertical bag of stainless steel band, and the surface is for the light face or embossing is arranged; Described stainless steel sheath has one deck to be extruded the outer protecting band that forms by low-smoke halide-free fireproof composite polyolefine material outward.
In the utility model, conductor adopts 1 class solid copper conductor or 2 class twisted copper conductors, and meets the regulation of GB/T3956; At least wrapped three layers of two-sided synthetic mica tape on conductor and outside cable core make the insulation property of cable and withstand voltage properties between conductor and conductor and keep basic identical 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 customer requirements, the light face can be adopted in the stainless steel sheath surface, also can carry out embossing and process, and embossing is processed the bending property that can improve cable; According to user's needs, stainless steel sheath also can add crowded one deck low smoke halogen-free flame-retardant polyolefin oversheath outward, is used for high corrosion occasion, to improve cable life.The stainless steel sheath structure is used for fire safe type control instrument cable and belongs to pioneering both at home and abroad.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
(1) sheath because of this cable is that the vertical bag of stainless steel band is welded, and stainless melting temperature is 1772 ℃, when the category-A fire-resistance property is tested---and flame temperature is that under 950 ℃～1000 ℃ conditions, cable can not melt and burn yet.Insulating material adopts domestic best synthetic mica tape, the characteristics such as the good insulation properties that synthetic mica has, thermal endurance and quality are pure, free from admixture, that any natural mica can not compare, substitute, the performance such as have 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 can not produce dieseling because of aging, overload or short circuit yet.Eliminated the fire disaster that causes because of the cable spontaneous combustion, in extraneous fire, cable neither can burn and also can not melt, and can keep cable that the normal power-up operation of long period more than three hours is arranged, and its fire-resistance property is excellent.It is surprising that the fire that cable causes causes direct or indirect economic loss in China, and the utility model has thoroughly solved the difficult problem of 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.The oversheath corrosion resistance is strong in addition due to stainless steel sheath, and material and air inside cable are isolated again, and the ageing process of insulation and other material delays greatly, and can reach more than 50 years the useful life of cable as calculated.
(4) because the stainless steel sheath of cable has adopted vertical bag welding embossing technique, still fire prevention, antiseptic property good (higher than the 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 during mounting and installation and uses, and has saved the plastic protective jacking of armoring material and cable.
(6) when cable only has stainless steel sheath; cable has and does not fire characteristic; or else the fire that the too high fire that causes of the short circuit and fire hazard, the ambient temperature that cause because cable material is aging, artificial kindling material are caused will can occur; can not discharge smog and halogen gas at Fire Conditions yet; therefore; the utility model 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 utility model:
2.1 rated voltage: 450/750V and following;
2.2 cable the highest permission working temperature for a long time has: 250 ℃;
2.3 minimum bending radius is identical with common cable: be not less than 10 times of the outside diameter of cable.
2.4 conductor resistance meets 3956 regulation in the time of 20 ℃.
2.5 manufacture test voltage: control cables 2500V/5min.
2.6 insulation resistance: be not less than 1000M Ω/km in the time of 20 ℃.
2.7 fire resistance: 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 performance: smokeless, Halogen, nontoxic.
2.9 fire resistance: by the category-A bunched burning test.
2.10 useful life 〉=50 year.
Description of drawings
Fig. 1 is the utility model structural representation without oversheath.
Fig. 2 is the utility model structural representation that oversheath is arranged.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
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 the 19 stranded cable conductors that form of eradication edge core, wrapped formation turnkey layer 3 outside cable core, the outermost layer of cable is sheath 4.
When specifically arranging, conductor 1 adopts the soft circular copper wire of electrician, adopts the first solid copper conductor structure that meets the 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 and process.
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, thoroughly do away with the edge core by 19 and be twisted into cable conductor, and wrapped formation turnkey layer 3 outside cable core, then sheath 4 and oversheath 5 are outwards arranged.
When specifically arranging, conductor 1 adopts the soft circular copper wire of electrician, adopts the second twisted copper conductors structure that meets the 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 and process.
Oversheath 5 adopts low-smoke halide-free fireproof composite polyolefine material to extrude and forms.
Claims (4)
1. safety and environmental protection fire-type control instrument cable, comprise conductor, insulating barrier and sheath, it is characterized in that the outer insulating barrier of described conductor and conductor forms insulated wire cores, be twisted into cable core by many eradications edge core, cable core has the turnkey layer outward, the turnkey layer has stainless steel sheath outward, and described insulating barrier and turnkey layer are by at 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 for adopting solid conductor or the stranded conductor of 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 the surface is for the light face or embossing is arranged.
4. a kind of safety and environmental protection fire-type control instrument cable according to claim 1, it is characterized in that: described stainless steel sheath has one deck to be extruded the oversheath that forms by low-smoke halide-free fireproof composite polyolefine material outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206065970U CN202976911U (en) | 2012-11-16 | 2012-11-16 | Safe environmental-protection fire-proof type control instrument cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206065970U CN202976911U (en) | 2012-11-16 | 2012-11-16 | Safe environmental-protection fire-proof type control instrument cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202976911U true CN202976911U (en) | 2013-06-05 |
Family
ID=48517955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206065970U Expired - Lifetime CN202976911U (en) | 2012-11-16 | 2012-11-16 | Safe environmental-protection fire-proof type control instrument cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202976911U (en) |
-
2012
- 2012-11-16 CN CN2012206065970U patent/CN202976911U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.999, Shuangdeng Avenue, Jiangyan District, Taizhou City, Jiangsu Province Patentee after: Shuangdeng Cable Co.,Ltd. Address before: Jiangyan City, Jiangsu province 225526 Taizhou city Liang Xu Shuangdeng science and Industry Park No. 1 Patentee before: JIANGSU SHUANGDENG POWER TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |