Flexible spraying-resisting shock resistance nanometer intervention type medium voltage fire-resisting cable
A fire-resistant cable and impact-resistant technology, applied in the direction of insulated cables, bendable cables, cables, etc., can solve the problems of complex manufacturing process of isolation sleeves, easy voids, influences, etc., and achieve good spray resistance and impact resistance. hygroscopic effect
Inactive Publication Date: 2012-07-11
SHANGHAI MORN ELECTRIC EQUIPMENT CO LTD
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Problems solved by technology
[0004] 1. In the air, aluminum hydroxide inorganic substances will absorb moisture and corrode the armored structure, and the manufacturing process of the isolation sleeve is complicated, and it is easy to have holes, which will cause the water vapor of the filler to enter the metal shielding layer, cause the copper strip to oxidize, and affect or even destroy the cable. Short circuit performance
[0005] 2. The cable has poor bending performance and strong rigidity, which affects the laying and installation of the cable
[0007] 4. Medium-voltage fire-resistant cables may not have spray-resistant performance
[0008] 5. Medium-voltage fire-resistant cables do not have impact resistance
Method used
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[0019] In order to make the technical means, creation features, achievement goals and effects of the present invention easy to understand and understand, the present invention is further described below with reference to specific embodiments.
[0020] like figure 1 As shown, a flexible spray-resistant and impact-resistant nano-intervention medium-voltage fire-resistant cable includes a cable inner core and a cable outer layer wrapped around the cable inner core.
[0021] The inner core of the cable includes three insulated wire cores 1 , which are twisted together. Between the inner core of the cable and the outer layer of the cable, there is a soft flame-retardant filler 2 made of nanotechnology, and the outer layer of the cable is the first composite refractory layer 3, the second composite refractory layer 4, and the armor layer 5 from the inside to the outside. , Sheath 6.
[0022] The first composite refractory layer 3 is composed of composite refractory materials, and ...
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The invention discloses a flexible spraying-resisting shock resistance nanometer intervention type medium voltage fire-resisting cable. The fire-resisting cable comprises a cable inner core and a cable outer layer which covers outside of the cable inner core, wherein the cable inner core comprises a plurality of insulated wire cores; and flexible flame retardant padding which is manufactured by a nanometer technology is filled between the cable inner core and the cable outer layer, and the cable outer layer is successively composed of a first compounding flame retardant layer, a second compounding flame retardant layer, an armor layer and a sheath from inside to outside. The fireproof level of the fire-resisting cable provided by the invention is upmost NH-IA standard, the fired temperature is 950 DEG C-1000 DEG C, the fire-supplying time is 90 minutes, the cable can have a delay burning height which is less than or equal to 0.5 m, and the self-extinguishing time is less than or equal to 10 seconds; and the fire-resisting cable is a environment-friendly, is beneficial to environment and secure clean fire control, and has good spraying-resistance shock resistance.
Description
technical field [0001] The invention relates to a power transmission cable, in particular to a flexible, spray-resistant, impact-resistant nano-intervention medium-voltage fire-resistant cable. Background technique [0002] At present, medium-voltage fire-resistant cable products generally adopt the cable structure: an isolation sleeve is provided outside the insulating core, and the surface of the isolation sleeve is provided with aluminum hydroxide as the main raw material and inorganic substances as fillers, oxygen barrier layers and refractory layers to achieve flame retardancy. refractory purpose. [0003] However, such medium-voltage fire-resistant cables have the following problems: [0004] 1. In the air, aluminum hydroxide inorganic substances will absorb moisture and corrode the armored structure. Moreover, the manufacturing process of the isolation sleeve is complicated, and it is easy to form voids, causing the water vapor of the filler to enter the metal shield...
Claims
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Login to View More IPC IPC(8): H01B7/04H01B7/295
Inventor 姚秀艳鲁学赵飞
Owner SHANGHAI MORN ELECTRIC EQUIPMENT CO LTD